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 | ||
a99bbaf5 | 23 | #include <linux/sched.h> |
1da177e4 LT |
24 | #include <linux/spinlock.h> |
25 | #include <linux/slab.h> | |
26 | #include <linux/vmalloc.h> | |
27 | #include <linux/module.h> | |
1da177e4 LT |
28 | #include <linux/poll.h> |
29 | #include <linux/ioctl.h> | |
30 | #include <linux/wait.h> | |
31 | #include <asm/uaccess.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 | |
b0ba0e3a | 99 | ret = dvb_ringbuffer_read_user(src, buf, avail); |
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--; | |
1c488ea9 | 208 | if (dvbdev->users == 1 && dmxdev->exit == 1) { |
57861b43 MR |
209 | mutex_unlock(&dmxdev->mutex); |
210 | wake_up(&dvbdev->wait_queue); | |
211 | } else | |
212 | mutex_unlock(&dmxdev->mutex); | |
213 | ||
1da177e4 LT |
214 | return 0; |
215 | } | |
216 | ||
217 | static ssize_t dvb_dvr_write(struct file *file, const char __user *buf, | |
f705e6e4 | 218 | size_t count, loff_t *ppos) |
1da177e4 | 219 | { |
0c53c70f JS |
220 | struct dvb_device *dvbdev = file->private_data; |
221 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
222 | int ret; |
223 | ||
224 | if (!dmxdev->demux->write) | |
225 | return -EOPNOTSUPP; | |
f705e6e4 | 226 | if ((file->f_flags & O_ACCMODE) != O_WRONLY) |
1da177e4 | 227 | return -EINVAL; |
3593cab5 | 228 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 | 229 | return -ERESTARTSYS; |
57861b43 MR |
230 | |
231 | if (dmxdev->exit) { | |
232 | mutex_unlock(&dmxdev->mutex); | |
233 | return -ENODEV; | |
234 | } | |
f705e6e4 | 235 | ret = dmxdev->demux->write(dmxdev->demux, buf, count); |
3593cab5 | 236 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
237 | return ret; |
238 | } | |
239 | ||
240 | static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count, | |
f705e6e4 | 241 | loff_t *ppos) |
1da177e4 | 242 | { |
0c53c70f JS |
243 | struct dvb_device *dvbdev = file->private_data; |
244 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 | 245 | |
eda9f752 | 246 | if (dmxdev->exit) |
57861b43 | 247 | return -ENODEV; |
57861b43 | 248 | |
eda9f752 SA |
249 | return dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer, |
250 | file->f_flags & O_NONBLOCK, | |
251 | buf, count, ppos); | |
1da177e4 LT |
252 | } |
253 | ||
a095be4b AO |
254 | static int dvb_dvr_set_buffer_size(struct dmxdev *dmxdev, |
255 | unsigned long size) | |
256 | { | |
257 | struct dvb_ringbuffer *buf = &dmxdev->dvr_buffer; | |
258 | void *newmem; | |
259 | void *oldmem; | |
260 | ||
261 | dprintk("function : %s\n", __func__); | |
262 | ||
263 | if (buf->size == size) | |
264 | return 0; | |
265 | if (!size) | |
266 | return -EINVAL; | |
267 | ||
268 | newmem = vmalloc(size); | |
269 | if (!newmem) | |
270 | return -ENOMEM; | |
271 | ||
272 | oldmem = buf->data; | |
273 | ||
274 | spin_lock_irq(&dmxdev->lock); | |
275 | buf->data = newmem; | |
276 | buf->size = size; | |
277 | ||
278 | /* reset and not flush in case the buffer shrinks */ | |
279 | dvb_ringbuffer_reset(buf); | |
280 | spin_unlock_irq(&dmxdev->lock); | |
281 | ||
282 | vfree(oldmem); | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
f705e6e4 AO |
287 | static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter |
288 | *dmxdevfilter, int state) | |
1da177e4 LT |
289 | { |
290 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 291 | dmxdevfilter->state = state; |
1da177e4 LT |
292 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
293 | } | |
294 | ||
f705e6e4 AO |
295 | static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, |
296 | unsigned long size) | |
1da177e4 | 297 | { |
34731df2 | 298 | struct dvb_ringbuffer *buf = &dmxdevfilter->buffer; |
a095be4b AO |
299 | void *newmem; |
300 | void *oldmem; | |
1da177e4 | 301 | |
f705e6e4 | 302 | if (buf->size == size) |
1da177e4 | 303 | return 0; |
a095be4b AO |
304 | if (!size) |
305 | return -EINVAL; | |
f705e6e4 | 306 | if (dmxdevfilter->state >= DMXDEV_STATE_GO) |
1da177e4 | 307 | return -EBUSY; |
a095be4b AO |
308 | |
309 | newmem = vmalloc(size); | |
310 | if (!newmem) | |
311 | return -ENOMEM; | |
312 | ||
313 | oldmem = buf->data; | |
314 | ||
1da177e4 | 315 | spin_lock_irq(&dmxdevfilter->dev->lock); |
a095be4b | 316 | buf->data = newmem; |
f705e6e4 | 317 | buf->size = size; |
48c01a9c AO |
318 | |
319 | /* reset and not flush in case the buffer shrinks */ | |
320 | dvb_ringbuffer_reset(buf); | |
1da177e4 | 321 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
1da177e4 | 322 | |
a095be4b AO |
323 | vfree(oldmem); |
324 | ||
1da177e4 LT |
325 | return 0; |
326 | } | |
327 | ||
328 | static void dvb_dmxdev_filter_timeout(unsigned long data) | |
329 | { | |
f705e6e4 | 330 | struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data; |
1da177e4 | 331 | |
f705e6e4 | 332 | dmxdevfilter->buffer.error = -ETIMEDOUT; |
1da177e4 | 333 | spin_lock_irq(&dmxdevfilter->dev->lock); |
f705e6e4 | 334 | dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT; |
1da177e4 LT |
335 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
336 | wake_up(&dmxdevfilter->buffer.queue); | |
337 | } | |
338 | ||
339 | static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter) | |
340 | { | |
f705e6e4 | 341 | struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec; |
1da177e4 LT |
342 | |
343 | del_timer(&dmxdevfilter->timer); | |
344 | if (para->timeout) { | |
f705e6e4 AO |
345 | dmxdevfilter->timer.function = dvb_dmxdev_filter_timeout; |
346 | dmxdevfilter->timer.data = (unsigned long)dmxdevfilter; | |
347 | dmxdevfilter->timer.expires = | |
348 | jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000; | |
1da177e4 LT |
349 | add_timer(&dmxdevfilter->timer); |
350 | } | |
351 | } | |
352 | ||
353 | static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 | 354 | const u8 *buffer2, size_t buffer2_len, |
2f684b23 | 355 | struct dmx_section_filter *filter) |
1da177e4 | 356 | { |
0c53c70f | 357 | struct dmxdev_filter *dmxdevfilter = filter->priv; |
1da177e4 LT |
358 | int ret; |
359 | ||
360 | if (dmxdevfilter->buffer.error) { | |
361 | wake_up(&dmxdevfilter->buffer.queue); | |
362 | return 0; | |
363 | } | |
28100165 | 364 | spin_lock(&dmxdevfilter->dev->lock); |
f705e6e4 | 365 | if (dmxdevfilter->state != DMXDEV_STATE_GO) { |
28100165 | 366 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
367 | return 0; |
368 | } | |
369 | del_timer(&dmxdevfilter->timer); | |
090fdc17 | 370 | dprintk("dmxdev: section callback %*ph\n", 6, buffer1); |
f705e6e4 AO |
371 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1, |
372 | buffer1_len); | |
373 | if (ret == buffer1_len) { | |
374 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2, | |
375 | buffer2_len); | |
1da177e4 | 376 | } |
414abbd2 | 377 | if (ret < 0) |
34731df2 | 378 | dmxdevfilter->buffer.error = ret; |
f705e6e4 AO |
379 | if (dmxdevfilter->params.sec.flags & DMX_ONESHOT) |
380 | dmxdevfilter->state = DMXDEV_STATE_DONE; | |
28100165 | 381 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
382 | wake_up(&dmxdevfilter->buffer.queue); |
383 | return 0; | |
384 | } | |
385 | ||
386 | static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 | 387 | const u8 *buffer2, size_t buffer2_len, |
2f684b23 | 388 | struct dmx_ts_feed *feed) |
1da177e4 | 389 | { |
0c53c70f | 390 | struct dmxdev_filter *dmxdevfilter = feed->priv; |
34731df2 | 391 | struct dvb_ringbuffer *buffer; |
1da177e4 LT |
392 | int ret; |
393 | ||
28100165 | 394 | spin_lock(&dmxdevfilter->dev->lock); |
f705e6e4 | 395 | if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) { |
28100165 | 396 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
397 | return 0; |
398 | } | |
399 | ||
b01cd937 PH |
400 | if (dmxdevfilter->params.pes.output == DMX_OUT_TAP |
401 | || dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP) | |
f705e6e4 | 402 | buffer = &dmxdevfilter->buffer; |
1da177e4 | 403 | else |
f705e6e4 | 404 | buffer = &dmxdevfilter->dev->dvr_buffer; |
1da177e4 | 405 | if (buffer->error) { |
28100165 | 406 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
407 | wake_up(&buffer->queue); |
408 | return 0; | |
409 | } | |
f705e6e4 AO |
410 | ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len); |
411 | if (ret == buffer1_len) | |
412 | ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len); | |
414abbd2 | 413 | if (ret < 0) |
34731df2 | 414 | buffer->error = ret; |
28100165 | 415 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
416 | wake_up(&buffer->queue); |
417 | return 0; | |
418 | } | |
419 | ||
1da177e4 | 420 | /* stop feed but only mark the specified filter as stopped (state set) */ |
1da177e4 LT |
421 | static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter) |
422 | { | |
1cb662a3 AO |
423 | struct dmxdev_feed *feed; |
424 | ||
1da177e4 LT |
425 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); |
426 | ||
427 | switch (dmxdevfilter->type) { | |
428 | case DMXDEV_TYPE_SEC: | |
429 | del_timer(&dmxdevfilter->timer); | |
430 | dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec); | |
431 | break; | |
432 | case DMXDEV_TYPE_PES: | |
1cb662a3 AO |
433 | list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) |
434 | feed->ts->stop_filtering(feed->ts); | |
1da177e4 LT |
435 | break; |
436 | default: | |
437 | return -EINVAL; | |
438 | } | |
439 | return 0; | |
440 | } | |
441 | ||
1da177e4 | 442 | /* start feed associated with the specified filter */ |
1da177e4 LT |
443 | static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter) |
444 | { | |
1cb662a3 AO |
445 | struct dmxdev_feed *feed; |
446 | int ret; | |
447 | ||
f705e6e4 | 448 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); |
1da177e4 LT |
449 | |
450 | switch (filter->type) { | |
451 | case DMXDEV_TYPE_SEC: | |
452 | return filter->feed.sec->start_filtering(filter->feed.sec); | |
1da177e4 | 453 | case DMXDEV_TYPE_PES: |
1cb662a3 AO |
454 | list_for_each_entry(feed, &filter->feed.ts, next) { |
455 | ret = feed->ts->start_filtering(feed->ts); | |
456 | if (ret < 0) { | |
457 | dvb_dmxdev_feed_stop(filter); | |
458 | return ret; | |
459 | } | |
460 | } | |
461 | break; | |
1da177e4 LT |
462 | default: |
463 | return -EINVAL; | |
464 | } | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
1da177e4 LT |
469 | /* restart section feed if it has filters left associated with it, |
470 | otherwise release the feed */ | |
1da177e4 LT |
471 | static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter) |
472 | { | |
473 | int i; | |
474 | struct dmxdev *dmxdev = filter->dev; | |
475 | u16 pid = filter->params.sec.pid; | |
476 | ||
f705e6e4 AO |
477 | for (i = 0; i < dmxdev->filternum; i++) |
478 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && | |
479 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && | |
480 | dmxdev->filter[i].params.sec.pid == pid) { | |
1da177e4 LT |
481 | dvb_dmxdev_feed_start(&dmxdev->filter[i]); |
482 | return 0; | |
483 | } | |
484 | ||
f705e6e4 AO |
485 | filter->dev->demux->release_section_feed(dmxdev->demux, |
486 | filter->feed.sec); | |
1da177e4 LT |
487 | |
488 | return 0; | |
489 | } | |
490 | ||
491 | static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter) | |
492 | { | |
1cb662a3 AO |
493 | struct dmxdev_feed *feed; |
494 | struct dmx_demux *demux; | |
495 | ||
f705e6e4 | 496 | if (dmxdevfilter->state < DMXDEV_STATE_GO) |
1da177e4 LT |
497 | return 0; |
498 | ||
499 | switch (dmxdevfilter->type) { | |
500 | case DMXDEV_TYPE_SEC: | |
501 | if (!dmxdevfilter->feed.sec) | |
502 | break; | |
503 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
504 | if (dmxdevfilter->filter.sec) | |
505 | dmxdevfilter->feed.sec-> | |
f705e6e4 AO |
506 | release_filter(dmxdevfilter->feed.sec, |
507 | dmxdevfilter->filter.sec); | |
1da177e4 | 508 | dvb_dmxdev_feed_restart(dmxdevfilter); |
f705e6e4 | 509 | dmxdevfilter->feed.sec = NULL; |
1da177e4 LT |
510 | break; |
511 | case DMXDEV_TYPE_PES: | |
1da177e4 | 512 | dvb_dmxdev_feed_stop(dmxdevfilter); |
1cb662a3 AO |
513 | demux = dmxdevfilter->dev->demux; |
514 | list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) { | |
515 | demux->release_ts_feed(demux, feed->ts); | |
516 | feed->ts = NULL; | |
517 | } | |
1da177e4 LT |
518 | break; |
519 | default: | |
f705e6e4 | 520 | if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED) |
1da177e4 LT |
521 | return 0; |
522 | return -EINVAL; | |
523 | } | |
34731df2 AO |
524 | |
525 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); | |
1da177e4 LT |
526 | return 0; |
527 | } | |
528 | ||
1cb662a3 AO |
529 | static void dvb_dmxdev_delete_pids(struct dmxdev_filter *dmxdevfilter) |
530 | { | |
531 | struct dmxdev_feed *feed, *tmp; | |
532 | ||
533 | /* delete all PIDs */ | |
534 | list_for_each_entry_safe(feed, tmp, &dmxdevfilter->feed.ts, next) { | |
535 | list_del(&feed->next); | |
536 | kfree(feed); | |
537 | } | |
538 | ||
539 | BUG_ON(!list_empty(&dmxdevfilter->feed.ts)); | |
540 | } | |
541 | ||
1da177e4 LT |
542 | static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter) |
543 | { | |
f705e6e4 | 544 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
545 | return 0; |
546 | ||
1cb662a3 AO |
547 | if (dmxdevfilter->type == DMXDEV_TYPE_PES) |
548 | dvb_dmxdev_delete_pids(dmxdevfilter); | |
549 | ||
f705e6e4 | 550 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 LT |
551 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
552 | return 0; | |
553 | } | |
554 | ||
1cb662a3 AO |
555 | static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev, |
556 | struct dmxdev_filter *filter, | |
557 | struct dmxdev_feed *feed) | |
558 | { | |
559 | struct timespec timeout = { 0 }; | |
560 | struct dmx_pes_filter_params *para = &filter->params.pes; | |
561 | dmx_output_t otype; | |
562 | int ret; | |
563 | int ts_type; | |
fde04ab9 | 564 | enum dmx_ts_pes ts_pes; |
1cb662a3 AO |
565 | struct dmx_ts_feed *tsfeed; |
566 | ||
567 | feed->ts = NULL; | |
568 | otype = para->output; | |
569 | ||
9ae2ae35 | 570 | ts_pes = para->pes_type; |
1cb662a3 AO |
571 | |
572 | if (ts_pes < DMX_PES_OTHER) | |
573 | ts_type = TS_DECODER; | |
574 | else | |
575 | ts_type = 0; | |
576 | ||
577 | if (otype == DMX_OUT_TS_TAP) | |
578 | ts_type |= TS_PACKET; | |
579 | else if (otype == DMX_OUT_TSDEMUX_TAP) | |
580 | ts_type |= TS_PACKET | TS_DEMUX; | |
581 | else if (otype == DMX_OUT_TAP) | |
582 | ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY; | |
583 | ||
584 | ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, &feed->ts, | |
585 | dvb_dmxdev_ts_callback); | |
586 | if (ret < 0) | |
587 | return ret; | |
588 | ||
589 | tsfeed = feed->ts; | |
590 | tsfeed->priv = filter; | |
591 | ||
592 | ret = tsfeed->set(tsfeed, feed->pid, ts_type, ts_pes, 32768, timeout); | |
593 | if (ret < 0) { | |
594 | dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed); | |
595 | return ret; | |
596 | } | |
597 | ||
598 | ret = tsfeed->start_filtering(tsfeed); | |
599 | if (ret < 0) { | |
600 | dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed); | |
601 | return ret; | |
602 | } | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
1da177e4 LT |
607 | static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) |
608 | { | |
609 | struct dmxdev *dmxdev = filter->dev; | |
1cb662a3 | 610 | struct dmxdev_feed *feed; |
1da177e4 LT |
611 | void *mem; |
612 | int ret, i; | |
613 | ||
614 | if (filter->state < DMXDEV_STATE_SET) | |
615 | return -EINVAL; | |
616 | ||
617 | if (filter->state >= DMXDEV_STATE_GO) | |
618 | dvb_dmxdev_filter_stop(filter); | |
619 | ||
34731df2 | 620 | if (!filter->buffer.data) { |
1da177e4 | 621 | mem = vmalloc(filter->buffer.size); |
34731df2 AO |
622 | if (!mem) |
623 | return -ENOMEM; | |
1da177e4 | 624 | spin_lock_irq(&filter->dev->lock); |
f705e6e4 | 625 | filter->buffer.data = mem; |
1da177e4 | 626 | spin_unlock_irq(&filter->dev->lock); |
1da177e4 LT |
627 | } |
628 | ||
34731df2 | 629 | dvb_ringbuffer_flush(&filter->buffer); |
1da177e4 LT |
630 | |
631 | switch (filter->type) { | |
632 | case DMXDEV_TYPE_SEC: | |
633 | { | |
f705e6e4 AO |
634 | struct dmx_sct_filter_params *para = &filter->params.sec; |
635 | struct dmx_section_filter **secfilter = &filter->filter.sec; | |
636 | struct dmx_section_feed **secfeed = &filter->feed.sec; | |
637 | ||
638 | *secfilter = NULL; | |
639 | *secfeed = NULL; | |
1da177e4 | 640 | |
1da177e4 LT |
641 | |
642 | /* find active filter/feed with same PID */ | |
f705e6e4 | 643 | for (i = 0; i < dmxdev->filternum; i++) { |
1da177e4 | 644 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && |
09794a6f AO |
645 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && |
646 | dmxdev->filter[i].params.sec.pid == para->pid) { | |
1da177e4 LT |
647 | *secfeed = dmxdev->filter[i].feed.sec; |
648 | break; | |
649 | } | |
650 | } | |
651 | ||
652 | /* if no feed found, try to allocate new one */ | |
653 | if (!*secfeed) { | |
f705e6e4 AO |
654 | ret = dmxdev->demux->allocate_section_feed(dmxdev->demux, |
655 | secfeed, | |
656 | dvb_dmxdev_section_callback); | |
657 | if (ret < 0) { | |
658 | printk("DVB (%s): could not alloc feed\n", | |
46b4f7c1 | 659 | __func__); |
1da177e4 LT |
660 | return ret; |
661 | } | |
662 | ||
f705e6e4 AO |
663 | ret = (*secfeed)->set(*secfeed, para->pid, 32768, |
664 | (para->flags & DMX_CHECK_CRC) ? 1 : 0); | |
665 | if (ret < 0) { | |
666 | printk("DVB (%s): could not set feed\n", | |
46b4f7c1 | 667 | __func__); |
1da177e4 LT |
668 | dvb_dmxdev_feed_restart(filter); |
669 | return ret; | |
670 | } | |
671 | } else { | |
672 | dvb_dmxdev_feed_stop(filter); | |
673 | } | |
674 | ||
f705e6e4 | 675 | ret = (*secfeed)->allocate_filter(*secfeed, secfilter); |
1da177e4 LT |
676 | if (ret < 0) { |
677 | dvb_dmxdev_feed_restart(filter); | |
678 | filter->feed.sec->start_filtering(*secfeed); | |
f705e6e4 | 679 | dprintk("could not get filter\n"); |
1da177e4 LT |
680 | return ret; |
681 | } | |
682 | ||
683 | (*secfilter)->priv = filter; | |
684 | ||
685 | memcpy(&((*secfilter)->filter_value[3]), | |
f705e6e4 | 686 | &(para->filter.filter[1]), DMX_FILTER_SIZE - 1); |
1da177e4 | 687 | memcpy(&(*secfilter)->filter_mask[3], |
f705e6e4 | 688 | ¶->filter.mask[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 689 | memcpy(&(*secfilter)->filter_mode[3], |
f705e6e4 | 690 | ¶->filter.mode[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 691 | |
f705e6e4 AO |
692 | (*secfilter)->filter_value[0] = para->filter.filter[0]; |
693 | (*secfilter)->filter_mask[0] = para->filter.mask[0]; | |
694 | (*secfilter)->filter_mode[0] = para->filter.mode[0]; | |
695 | (*secfilter)->filter_mask[1] = 0; | |
696 | (*secfilter)->filter_mask[2] = 0; | |
1da177e4 LT |
697 | |
698 | filter->todo = 0; | |
699 | ||
f705e6e4 | 700 | ret = filter->feed.sec->start_filtering(filter->feed.sec); |
1da177e4 LT |
701 | if (ret < 0) |
702 | return ret; | |
703 | ||
704 | dvb_dmxdev_filter_timer(filter); | |
705 | break; | |
706 | } | |
1da177e4 | 707 | case DMXDEV_TYPE_PES: |
1cb662a3 AO |
708 | list_for_each_entry(feed, &filter->feed.ts, next) { |
709 | ret = dvb_dmxdev_start_feed(dmxdev, filter, feed); | |
710 | if (ret < 0) { | |
711 | dvb_dmxdev_filter_stop(filter); | |
712 | return ret; | |
713 | } | |
76197924 | 714 | } |
1da177e4 | 715 | break; |
1da177e4 LT |
716 | default: |
717 | return -EINVAL; | |
718 | } | |
719 | ||
720 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); | |
721 | return 0; | |
722 | } | |
723 | ||
724 | static int dvb_demux_open(struct inode *inode, struct file *file) | |
725 | { | |
0c53c70f JS |
726 | struct dvb_device *dvbdev = file->private_data; |
727 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
728 | int i; |
729 | struct dmxdev_filter *dmxdevfilter; | |
730 | ||
731 | if (!dmxdev->filter) | |
732 | return -EINVAL; | |
733 | ||
3593cab5 | 734 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
735 | return -ERESTARTSYS; |
736 | ||
f705e6e4 AO |
737 | for (i = 0; i < dmxdev->filternum; i++) |
738 | if (dmxdev->filter[i].state == DMXDEV_STATE_FREE) | |
1da177e4 LT |
739 | break; |
740 | ||
f705e6e4 | 741 | if (i == dmxdev->filternum) { |
3593cab5 | 742 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
743 | return -EMFILE; |
744 | } | |
745 | ||
f705e6e4 | 746 | dmxdevfilter = &dmxdev->filter[i]; |
3593cab5 | 747 | mutex_init(&dmxdevfilter->mutex); |
f705e6e4 | 748 | file->private_data = dmxdevfilter; |
1da177e4 | 749 | |
34731df2 | 750 | dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192); |
f705e6e4 | 751 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 | 752 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
1da177e4 LT |
753 | init_timer(&dmxdevfilter->timer); |
754 | ||
57861b43 MR |
755 | dvbdev->users++; |
756 | ||
3593cab5 | 757 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
758 | return 0; |
759 | } | |
760 | ||
f705e6e4 AO |
761 | static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, |
762 | struct dmxdev_filter *dmxdevfilter) | |
1da177e4 | 763 | { |
c2788502 SA |
764 | mutex_lock(&dmxdev->mutex); |
765 | mutex_lock(&dmxdevfilter->mutex); | |
1da177e4 LT |
766 | |
767 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
768 | dvb_dmxdev_filter_reset(dmxdevfilter); | |
769 | ||
770 | if (dmxdevfilter->buffer.data) { | |
f705e6e4 | 771 | void *mem = dmxdevfilter->buffer.data; |
1da177e4 LT |
772 | |
773 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 774 | dmxdevfilter->buffer.data = NULL; |
1da177e4 LT |
775 | spin_unlock_irq(&dmxdev->lock); |
776 | vfree(mem); | |
777 | } | |
778 | ||
779 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE); | |
780 | wake_up(&dmxdevfilter->buffer.queue); | |
3593cab5 IM |
781 | mutex_unlock(&dmxdevfilter->mutex); |
782 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
783 | return 0; |
784 | } | |
785 | ||
786 | static inline void invert_mode(dmx_filter_t *filter) | |
787 | { | |
788 | int i; | |
789 | ||
f705e6e4 AO |
790 | for (i = 0; i < DMX_FILTER_SIZE; i++) |
791 | filter->mode[i] ^= 0xff; | |
1da177e4 LT |
792 | } |
793 | ||
1cb662a3 AO |
794 | static int dvb_dmxdev_add_pid(struct dmxdev *dmxdev, |
795 | struct dmxdev_filter *filter, u16 pid) | |
796 | { | |
797 | struct dmxdev_feed *feed; | |
798 | ||
799 | if ((filter->type != DMXDEV_TYPE_PES) || | |
800 | (filter->state < DMXDEV_STATE_SET)) | |
801 | return -EINVAL; | |
802 | ||
803 | /* only TS packet filters may have multiple PIDs */ | |
804 | if ((filter->params.pes.output != DMX_OUT_TSDEMUX_TAP) && | |
805 | (!list_empty(&filter->feed.ts))) | |
806 | return -EINVAL; | |
807 | ||
808 | feed = kzalloc(sizeof(struct dmxdev_feed), GFP_KERNEL); | |
809 | if (feed == NULL) | |
810 | return -ENOMEM; | |
811 | ||
812 | feed->pid = pid; | |
813 | list_add(&feed->next, &filter->feed.ts); | |
814 | ||
815 | if (filter->state >= DMXDEV_STATE_GO) | |
816 | return dvb_dmxdev_start_feed(dmxdev, filter, feed); | |
817 | ||
818 | return 0; | |
819 | } | |
820 | ||
821 | static int dvb_dmxdev_remove_pid(struct dmxdev *dmxdev, | |
822 | struct dmxdev_filter *filter, u16 pid) | |
823 | { | |
824 | struct dmxdev_feed *feed, *tmp; | |
825 | ||
826 | if ((filter->type != DMXDEV_TYPE_PES) || | |
827 | (filter->state < DMXDEV_STATE_SET)) | |
828 | return -EINVAL; | |
829 | ||
830 | list_for_each_entry_safe(feed, tmp, &filter->feed.ts, next) { | |
831 | if ((feed->pid == pid) && (feed->ts != NULL)) { | |
832 | feed->ts->stop_filtering(feed->ts); | |
833 | filter->dev->demux->release_ts_feed(filter->dev->demux, | |
834 | feed->ts); | |
835 | list_del(&feed->next); | |
836 | kfree(feed); | |
837 | } | |
838 | } | |
839 | ||
840 | return 0; | |
841 | } | |
842 | ||
1da177e4 | 843 | static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev, |
f705e6e4 AO |
844 | struct dmxdev_filter *dmxdevfilter, |
845 | struct dmx_sct_filter_params *params) | |
1da177e4 | 846 | { |
17e67d4c MCC |
847 | dprintk("function : %s, PID=0x%04x, flags=%02x, timeout=%d\n", |
848 | __func__, params->pid, params->flags, params->timeout); | |
1da177e4 LT |
849 | |
850 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
851 | ||
f705e6e4 | 852 | dmxdevfilter->type = DMXDEV_TYPE_SEC; |
1da177e4 LT |
853 | memcpy(&dmxdevfilter->params.sec, |
854 | params, sizeof(struct dmx_sct_filter_params)); | |
855 | invert_mode(&dmxdevfilter->params.sec.filter); | |
856 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
857 | ||
f705e6e4 | 858 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
859 | return dvb_dmxdev_filter_start(dmxdevfilter); |
860 | ||
861 | return 0; | |
862 | } | |
863 | ||
864 | static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev, | |
f705e6e4 AO |
865 | struct dmxdev_filter *dmxdevfilter, |
866 | struct dmx_pes_filter_params *params) | |
1da177e4 | 867 | { |
1cb662a3 AO |
868 | int ret; |
869 | ||
1da177e4 | 870 | dvb_dmxdev_filter_stop(dmxdevfilter); |
1cb662a3 | 871 | dvb_dmxdev_filter_reset(dmxdevfilter); |
1da177e4 | 872 | |
31becf09 | 873 | if ((unsigned)params->pes_type > DMX_PES_OTHER) |
1da177e4 LT |
874 | return -EINVAL; |
875 | ||
f705e6e4 AO |
876 | dmxdevfilter->type = DMXDEV_TYPE_PES; |
877 | memcpy(&dmxdevfilter->params, params, | |
878 | sizeof(struct dmx_pes_filter_params)); | |
691c9ae0 | 879 | INIT_LIST_HEAD(&dmxdevfilter->feed.ts); |
1da177e4 LT |
880 | |
881 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
882 | ||
1cb662a3 AO |
883 | ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, |
884 | dmxdevfilter->params.pes.pid); | |
885 | if (ret < 0) | |
886 | return ret; | |
887 | ||
f705e6e4 | 888 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
889 | return dvb_dmxdev_filter_start(dmxdevfilter); |
890 | ||
891 | return 0; | |
892 | } | |
893 | ||
894 | static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil, | |
f705e6e4 AO |
895 | struct file *file, char __user *buf, |
896 | size_t count, loff_t *ppos) | |
1da177e4 LT |
897 | { |
898 | int result, hcount; | |
f705e6e4 AO |
899 | int done = 0; |
900 | ||
901 | if (dfil->todo <= 0) { | |
902 | hcount = 3 + dfil->todo; | |
903 | if (hcount > count) | |
904 | hcount = count; | |
905 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
906 | file->f_flags & O_NONBLOCK, | |
907 | buf, hcount, ppos); | |
908 | if (result < 0) { | |
909 | dfil->todo = 0; | |
1da177e4 LT |
910 | return result; |
911 | } | |
f705e6e4 | 912 | if (copy_from_user(dfil->secheader - dfil->todo, buf, result)) |
1da177e4 | 913 | return -EFAULT; |
f705e6e4 AO |
914 | buf += result; |
915 | done = result; | |
916 | count -= result; | |
917 | dfil->todo -= result; | |
918 | if (dfil->todo > -3) | |
1da177e4 | 919 | return done; |
f705e6e4 | 920 | dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff; |
1da177e4 LT |
921 | if (!count) |
922 | return done; | |
923 | } | |
f705e6e4 AO |
924 | if (count > dfil->todo) |
925 | count = dfil->todo; | |
926 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
927 | file->f_flags & O_NONBLOCK, | |
928 | buf, count, ppos); | |
929 | if (result < 0) | |
1da177e4 | 930 | return result; |
f705e6e4 AO |
931 | dfil->todo -= result; |
932 | return (result + done); | |
1da177e4 LT |
933 | } |
934 | ||
1da177e4 | 935 | static ssize_t |
f705e6e4 AO |
936 | dvb_demux_read(struct file *file, char __user *buf, size_t count, |
937 | loff_t *ppos) | |
1da177e4 | 938 | { |
f705e6e4 AO |
939 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
940 | int ret; | |
1da177e4 | 941 | |
3593cab5 | 942 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) |
1da177e4 LT |
943 | return -ERESTARTSYS; |
944 | ||
f705e6e4 AO |
945 | if (dmxdevfilter->type == DMXDEV_TYPE_SEC) |
946 | ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos); | |
1da177e4 | 947 | else |
f705e6e4 AO |
948 | ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer, |
949 | file->f_flags & O_NONBLOCK, | |
950 | buf, count, ppos); | |
1da177e4 | 951 | |
3593cab5 | 952 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
953 | return ret; |
954 | } | |
955 | ||
16ef8def | 956 | static int dvb_demux_do_ioctl(struct file *file, |
1da177e4 LT |
957 | unsigned int cmd, void *parg) |
958 | { | |
3ec4a307 | 959 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
f705e6e4 AO |
960 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
961 | unsigned long arg = (unsigned long)parg; | |
962 | int ret = 0; | |
1da177e4 | 963 | |
3593cab5 | 964 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
965 | return -ERESTARTSYS; |
966 | ||
967 | switch (cmd) { | |
968 | case DMX_START: | |
3593cab5 IM |
969 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
970 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
971 | return -ERESTARTSYS; |
972 | } | |
f705e6e4 | 973 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
974 | ret = -EINVAL; |
975 | else | |
976 | ret = dvb_dmxdev_filter_start(dmxdevfilter); | |
3593cab5 | 977 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
978 | break; |
979 | ||
980 | case DMX_STOP: | |
3593cab5 IM |
981 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
982 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
983 | return -ERESTARTSYS; |
984 | } | |
f705e6e4 | 985 | ret = dvb_dmxdev_filter_stop(dmxdevfilter); |
3593cab5 | 986 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
987 | break; |
988 | ||
989 | case DMX_SET_FILTER: | |
3593cab5 IM |
990 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
991 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
992 | return -ERESTARTSYS; |
993 | } | |
f705e6e4 | 994 | ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 995 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
996 | break; |
997 | ||
998 | case DMX_SET_PES_FILTER: | |
3593cab5 IM |
999 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
1000 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
1001 | return -ERESTARTSYS; |
1002 | } | |
f705e6e4 | 1003 | ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 1004 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
1005 | break; |
1006 | ||
1007 | case DMX_SET_BUFFER_SIZE: | |
3593cab5 IM |
1008 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
1009 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
1010 | return -ERESTARTSYS; |
1011 | } | |
f705e6e4 | 1012 | ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg); |
3593cab5 | 1013 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
1014 | break; |
1015 | ||
1da177e4 LT |
1016 | case DMX_GET_PES_PIDS: |
1017 | if (!dmxdev->demux->get_pes_pids) { | |
f705e6e4 | 1018 | ret = -EINVAL; |
1da177e4 LT |
1019 | break; |
1020 | } | |
f705e6e4 | 1021 | dmxdev->demux->get_pes_pids(dmxdev->demux, parg); |
1da177e4 LT |
1022 | break; |
1023 | ||
1e92bbe0 MCC |
1024 | #if 0 |
1025 | /* Not used upstream and never documented */ | |
1026 | ||
c0510052 AO |
1027 | case DMX_GET_CAPS: |
1028 | if (!dmxdev->demux->get_caps) { | |
1029 | ret = -EINVAL; | |
1030 | break; | |
1031 | } | |
1032 | ret = dmxdev->demux->get_caps(dmxdev->demux, parg); | |
1033 | break; | |
1034 | ||
1035 | case DMX_SET_SOURCE: | |
1036 | if (!dmxdev->demux->set_source) { | |
1037 | ret = -EINVAL; | |
1038 | break; | |
1039 | } | |
1040 | ret = dmxdev->demux->set_source(dmxdev->demux, parg); | |
1041 | break; | |
1e92bbe0 | 1042 | #endif |
c0510052 | 1043 | |
1da177e4 LT |
1044 | case DMX_GET_STC: |
1045 | if (!dmxdev->demux->get_stc) { | |
f705e6e4 | 1046 | ret = -EINVAL; |
1da177e4 LT |
1047 | break; |
1048 | } | |
1049 | ret = dmxdev->demux->get_stc(dmxdev->demux, | |
f705e6e4 AO |
1050 | ((struct dmx_stc *)parg)->num, |
1051 | &((struct dmx_stc *)parg)->stc, | |
1052 | &((struct dmx_stc *)parg)->base); | |
1da177e4 LT |
1053 | break; |
1054 | ||
1cb662a3 AO |
1055 | case DMX_ADD_PID: |
1056 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { | |
1057 | ret = -ERESTARTSYS; | |
1058 | break; | |
1059 | } | |
1060 | ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, *(u16 *)parg); | |
1061 | mutex_unlock(&dmxdevfilter->mutex); | |
1062 | break; | |
1063 | ||
1064 | case DMX_REMOVE_PID: | |
1065 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { | |
1066 | ret = -ERESTARTSYS; | |
1067 | break; | |
1068 | } | |
1069 | ret = dvb_dmxdev_remove_pid(dmxdev, dmxdevfilter, *(u16 *)parg); | |
1070 | mutex_unlock(&dmxdevfilter->mutex); | |
1071 | break; | |
1072 | ||
1da177e4 | 1073 | default: |
f705e6e4 AO |
1074 | ret = -EINVAL; |
1075 | break; | |
1da177e4 | 1076 | } |
3593cab5 | 1077 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
1078 | return ret; |
1079 | } | |
1080 | ||
16ef8def AB |
1081 | static long dvb_demux_ioctl(struct file *file, unsigned int cmd, |
1082 | unsigned long arg) | |
1da177e4 | 1083 | { |
72024f1e | 1084 | return dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl); |
1da177e4 LT |
1085 | } |
1086 | ||
f705e6e4 | 1087 | static unsigned int dvb_demux_poll(struct file *file, poll_table *wait) |
1da177e4 | 1088 | { |
3ec4a307 | 1089 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
1090 | unsigned int mask = 0; |
1091 | ||
313ddec4 | 1092 | if ((!dmxdevfilter) || dmxdevfilter->dev->exit) |
236c9bfa | 1093 | return POLLERR; |
1da177e4 LT |
1094 | |
1095 | poll_wait(file, &dmxdevfilter->buffer.queue, wait); | |
1096 | ||
1097 | if (dmxdevfilter->state != DMXDEV_STATE_GO && | |
1098 | dmxdevfilter->state != DMXDEV_STATE_DONE && | |
1099 | dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT) | |
1100 | return 0; | |
1101 | ||
1102 | if (dmxdevfilter->buffer.error) | |
1103 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
1104 | ||
34731df2 | 1105 | if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer)) |
1da177e4 LT |
1106 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
1107 | ||
1108 | return mask; | |
1109 | } | |
1110 | ||
1da177e4 LT |
1111 | static int dvb_demux_release(struct inode *inode, struct file *file) |
1112 | { | |
3ec4a307 | 1113 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
1114 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
1115 | ||
57861b43 MR |
1116 | int ret; |
1117 | ||
1118 | ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter); | |
1119 | ||
1120 | mutex_lock(&dmxdev->mutex); | |
1121 | dmxdev->dvbdev->users--; | |
1122 | if(dmxdev->dvbdev->users==1 && dmxdev->exit==1) { | |
57861b43 MR |
1123 | mutex_unlock(&dmxdev->mutex); |
1124 | wake_up(&dmxdev->dvbdev->wait_queue); | |
1125 | } else | |
1126 | mutex_unlock(&dmxdev->mutex); | |
1127 | ||
1128 | return ret; | |
1da177e4 LT |
1129 | } |
1130 | ||
784e29d2 | 1131 | static const struct file_operations dvb_demux_fops = { |
f705e6e4 AO |
1132 | .owner = THIS_MODULE, |
1133 | .read = dvb_demux_read, | |
16ef8def | 1134 | .unlocked_ioctl = dvb_demux_ioctl, |
f705e6e4 AO |
1135 | .open = dvb_demux_open, |
1136 | .release = dvb_demux_release, | |
1137 | .poll = dvb_demux_poll, | |
6038f373 | 1138 | .llseek = default_llseek, |
1da177e4 LT |
1139 | }; |
1140 | ||
8afd52ef | 1141 | static const struct dvb_device dvbdev_demux = { |
f705e6e4 AO |
1142 | .priv = NULL, |
1143 | .users = 1, | |
1144 | .writers = 1, | |
8afd52ef | 1145 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) |
e4fd3bc5 | 1146 | .name = "dvb-demux", |
8afd52ef | 1147 | #endif |
f705e6e4 | 1148 | .fops = &dvb_demux_fops |
1da177e4 LT |
1149 | }; |
1150 | ||
16ef8def | 1151 | static int dvb_dvr_do_ioctl(struct file *file, |
f705e6e4 | 1152 | unsigned int cmd, void *parg) |
1da177e4 | 1153 | { |
0c53c70f JS |
1154 | struct dvb_device *dvbdev = file->private_data; |
1155 | struct dmxdev *dmxdev = dvbdev->priv; | |
a095be4b | 1156 | unsigned long arg = (unsigned long)parg; |
f705e6e4 | 1157 | int ret; |
1da177e4 | 1158 | |
3593cab5 | 1159 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
1160 | return -ERESTARTSYS; |
1161 | ||
1162 | switch (cmd) { | |
1163 | case DMX_SET_BUFFER_SIZE: | |
a095be4b | 1164 | ret = dvb_dvr_set_buffer_size(dmxdev, arg); |
1da177e4 LT |
1165 | break; |
1166 | ||
1167 | default: | |
f705e6e4 AO |
1168 | ret = -EINVAL; |
1169 | break; | |
1da177e4 | 1170 | } |
3593cab5 | 1171 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
1172 | return ret; |
1173 | } | |
1174 | ||
16ef8def | 1175 | static long dvb_dvr_ioctl(struct file *file, |
f705e6e4 | 1176 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1177 | { |
72024f1e | 1178 | return dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl); |
1da177e4 LT |
1179 | } |
1180 | ||
f705e6e4 | 1181 | static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait) |
1da177e4 | 1182 | { |
0c53c70f JS |
1183 | struct dvb_device *dvbdev = file->private_data; |
1184 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
1185 | unsigned int mask = 0; |
1186 | ||
46b4f7c1 | 1187 | dprintk("function : %s\n", __func__); |
1da177e4 | 1188 | |
d102cac8 CX |
1189 | if (dmxdev->exit) |
1190 | return POLLERR; | |
1191 | ||
1da177e4 LT |
1192 | poll_wait(file, &dmxdev->dvr_buffer.queue, wait); |
1193 | ||
f705e6e4 | 1194 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
1da177e4 LT |
1195 | if (dmxdev->dvr_buffer.error) |
1196 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
1197 | ||
34731df2 | 1198 | if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer)) |
1da177e4 LT |
1199 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
1200 | } else | |
1201 | mask |= (POLLOUT | POLLWRNORM | POLLPRI); | |
1202 | ||
1203 | return mask; | |
1204 | } | |
1205 | ||
828c0950 | 1206 | static const struct file_operations dvb_dvr_fops = { |
f705e6e4 AO |
1207 | .owner = THIS_MODULE, |
1208 | .read = dvb_dvr_read, | |
1209 | .write = dvb_dvr_write, | |
16ef8def | 1210 | .unlocked_ioctl = dvb_dvr_ioctl, |
f705e6e4 AO |
1211 | .open = dvb_dvr_open, |
1212 | .release = dvb_dvr_release, | |
1213 | .poll = dvb_dvr_poll, | |
6038f373 | 1214 | .llseek = default_llseek, |
1da177e4 LT |
1215 | }; |
1216 | ||
8afd52ef | 1217 | static const struct dvb_device dvbdev_dvr = { |
f705e6e4 | 1218 | .priv = NULL, |
5e85bd05 | 1219 | .readers = 1, |
57861b43 | 1220 | .users = 1, |
8afd52ef | 1221 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) |
e4fd3bc5 | 1222 | .name = "dvb-dvr", |
8afd52ef | 1223 | #endif |
f705e6e4 | 1224 | .fops = &dvb_dvr_fops |
1da177e4 | 1225 | }; |
f705e6e4 | 1226 | int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) |
1da177e4 LT |
1227 | { |
1228 | int i; | |
1229 | ||
1230 | if (dmxdev->demux->open(dmxdev->demux) < 0) | |
1231 | return -EUSERS; | |
1232 | ||
f705e6e4 | 1233 | dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter)); |
1da177e4 LT |
1234 | if (!dmxdev->filter) |
1235 | return -ENOMEM; | |
1236 | ||
3593cab5 | 1237 | mutex_init(&dmxdev->mutex); |
1da177e4 | 1238 | spin_lock_init(&dmxdev->lock); |
f705e6e4 AO |
1239 | for (i = 0; i < dmxdev->filternum; i++) { |
1240 | dmxdev->filter[i].dev = dmxdev; | |
1241 | dmxdev->filter[i].buffer.data = NULL; | |
1242 | dvb_dmxdev_filter_state_set(&dmxdev->filter[i], | |
1243 | DMXDEV_STATE_FREE); | |
1da177e4 LT |
1244 | } |
1245 | ||
f705e6e4 | 1246 | dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, |
df2f94e5 | 1247 | DVB_DEVICE_DEMUX, dmxdev->filternum); |
f705e6e4 | 1248 | dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, |
df2f94e5 | 1249 | dmxdev, DVB_DEVICE_DVR, dmxdev->filternum); |
1da177e4 | 1250 | |
34731df2 | 1251 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192); |
1da177e4 LT |
1252 | |
1253 | return 0; | |
1254 | } | |
f705e6e4 | 1255 | |
1da177e4 LT |
1256 | EXPORT_SYMBOL(dvb_dmxdev_init); |
1257 | ||
f705e6e4 | 1258 | void dvb_dmxdev_release(struct dmxdev *dmxdev) |
1da177e4 | 1259 | { |
57861b43 MR |
1260 | dmxdev->exit=1; |
1261 | if (dmxdev->dvbdev->users > 1) { | |
1262 | wait_event(dmxdev->dvbdev->wait_queue, | |
1263 | dmxdev->dvbdev->users==1); | |
1264 | } | |
1265 | if (dmxdev->dvr_dvbdev->users > 1) { | |
1266 | wait_event(dmxdev->dvr_dvbdev->wait_queue, | |
1267 | dmxdev->dvr_dvbdev->users==1); | |
1268 | } | |
1269 | ||
1da177e4 LT |
1270 | dvb_unregister_device(dmxdev->dvbdev); |
1271 | dvb_unregister_device(dmxdev->dvr_dvbdev); | |
1272 | ||
1273 | vfree(dmxdev->filter); | |
f705e6e4 | 1274 | dmxdev->filter = NULL; |
1da177e4 LT |
1275 | dmxdev->demux->close(dmxdev->demux); |
1276 | } | |
f705e6e4 | 1277 | |
1da177e4 | 1278 | EXPORT_SYMBOL(dvb_dmxdev_release); |