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