Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * dmxdev.c - DVB demultiplexer device | |
3 | * | |
f705e6e4 AO |
4 | * Copyright (C) 2000 Ralph Metzler & Marcus Metzler |
5 | * for convergence integrated media GmbH | |
1da177e4 LT |
6 | * |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public License | |
9 | * as published by the Free Software Foundation; either version 2.1 | |
10 | * of the License, or (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20 | * | |
21 | */ | |
22 | ||
23 | #include <linux/spinlock.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/vmalloc.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/moduleparam.h> | |
1da177e4 LT |
28 | #include <linux/poll.h> |
29 | #include <linux/ioctl.h> | |
30 | #include <linux/wait.h> | |
31 | #include <asm/uaccess.h> | |
32 | #include <asm/system.h> | |
1da177e4 LT |
33 | #include "dmxdev.h" |
34 | ||
35 | static int debug; | |
36 | ||
37 | module_param(debug, int, 0644); | |
38 | MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); | |
39 | ||
40 | #define dprintk if (debug) printk | |
41 | ||
34731df2 AO |
42 | static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf, |
43 | const u8 *src, size_t len) | |
1da177e4 | 44 | { |
34731df2 | 45 | ssize_t free; |
1da177e4 LT |
46 | |
47 | if (!len) | |
48 | return 0; | |
49 | if (!buf->data) | |
50 | return 0; | |
51 | ||
34731df2 AO |
52 | free = dvb_ringbuffer_free(buf); |
53 | if (len > free) { | |
1da177e4 | 54 | dprintk("dmxdev: buffer overflow\n"); |
34731df2 | 55 | return -EOVERFLOW; |
1da177e4 | 56 | } |
34731df2 AO |
57 | |
58 | return dvb_ringbuffer_write(buf, src, len); | |
1da177e4 LT |
59 | } |
60 | ||
34731df2 | 61 | static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src, |
f705e6e4 AO |
62 | int non_blocking, char __user *buf, |
63 | size_t count, loff_t *ppos) | |
1da177e4 | 64 | { |
34731df2 AO |
65 | size_t todo; |
66 | ssize_t avail; | |
67 | ssize_t ret = 0; | |
1da177e4 LT |
68 | |
69 | if (!src->data) | |
70 | return 0; | |
71 | ||
34731df2 AO |
72 | if (src->error) { |
73 | ret = src->error; | |
74 | dvb_ringbuffer_flush(src); | |
75 | return ret; | |
1da177e4 LT |
76 | } |
77 | ||
34731df2 AO |
78 | for (todo = count; todo > 0; todo -= ret) { |
79 | if (non_blocking && dvb_ringbuffer_empty(src)) { | |
80 | ret = -EWOULDBLOCK; | |
81 | break; | |
82 | } | |
1da177e4 | 83 | |
34731df2 AO |
84 | ret = wait_event_interruptible(src->queue, |
85 | !dvb_ringbuffer_empty(src) || | |
86 | (src->error != 0)); | |
87 | if (ret < 0) | |
88 | break; | |
1da177e4 | 89 | |
34731df2 AO |
90 | if (src->error) { |
91 | ret = src->error; | |
92 | dvb_ringbuffer_flush(src); | |
93 | break; | |
1da177e4 LT |
94 | } |
95 | ||
34731df2 | 96 | avail = dvb_ringbuffer_avail(src); |
f705e6e4 AO |
97 | if (avail > todo) |
98 | avail = todo; | |
34731df2 AO |
99 | |
100 | ret = dvb_ringbuffer_read(src, buf, avail, 1); | |
101 | if (ret < 0) | |
102 | break; | |
103 | ||
104 | buf += ret; | |
1da177e4 | 105 | } |
34731df2 AO |
106 | |
107 | return (count - todo) ? (count - todo) : ret; | |
1da177e4 LT |
108 | } |
109 | ||
f705e6e4 | 110 | static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type) |
1da177e4 LT |
111 | { |
112 | struct list_head *head, *pos; | |
113 | ||
f705e6e4 | 114 | head = demux->get_frontends(demux); |
1da177e4 LT |
115 | if (!head) |
116 | return NULL; | |
117 | list_for_each(pos, head) | |
f705e6e4 | 118 | if (DMX_FE_ENTRY(pos)->source == type) |
1da177e4 LT |
119 | return DMX_FE_ENTRY(pos); |
120 | ||
121 | return NULL; | |
122 | } | |
123 | ||
1da177e4 LT |
124 | static int dvb_dvr_open(struct inode *inode, struct file *file) |
125 | { | |
0c53c70f JS |
126 | struct dvb_device *dvbdev = file->private_data; |
127 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
128 | struct dmx_frontend *front; |
129 | ||
f705e6e4 | 130 | dprintk("function : %s\n", __FUNCTION__); |
1da177e4 | 131 | |
3593cab5 | 132 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
133 | return -ERESTARTSYS; |
134 | ||
57861b43 MR |
135 | if (dmxdev->exit) { |
136 | mutex_unlock(&dmxdev->mutex); | |
137 | return -ENODEV; | |
138 | } | |
139 | ||
f705e6e4 AO |
140 | if ((file->f_flags & O_ACCMODE) == O_RDWR) { |
141 | if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) { | |
3593cab5 | 142 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
143 | return -EOPNOTSUPP; |
144 | } | |
145 | } | |
146 | ||
f705e6e4 | 147 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
5e85bd05 TP |
148 | void *mem; |
149 | if (!dvbdev->readers) { | |
150 | mutex_unlock(&dmxdev->mutex); | |
151 | return -EBUSY; | |
152 | } | |
153 | mem = vmalloc(DVR_BUFFER_SIZE); | |
34731df2 | 154 | if (!mem) { |
f705e6e4 AO |
155 | mutex_unlock(&dmxdev->mutex); |
156 | return -ENOMEM; | |
157 | } | |
34731df2 | 158 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE); |
5e85bd05 | 159 | dvbdev->readers--; |
1da177e4 LT |
160 | } |
161 | ||
f705e6e4 AO |
162 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
163 | dmxdev->dvr_orig_fe = dmxdev->demux->frontend; | |
1da177e4 LT |
164 | |
165 | if (!dmxdev->demux->write) { | |
3593cab5 | 166 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
167 | return -EOPNOTSUPP; |
168 | } | |
169 | ||
f705e6e4 | 170 | front = get_fe(dmxdev->demux, DMX_MEMORY_FE); |
1da177e4 LT |
171 | |
172 | if (!front) { | |
3593cab5 | 173 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
174 | return -EINVAL; |
175 | } | |
176 | dmxdev->demux->disconnect_frontend(dmxdev->demux); | |
177 | dmxdev->demux->connect_frontend(dmxdev->demux, front); | |
178 | } | |
57861b43 | 179 | dvbdev->users++; |
3593cab5 | 180 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
181 | return 0; |
182 | } | |
183 | ||
184 | static int dvb_dvr_release(struct inode *inode, struct file *file) | |
185 | { | |
0c53c70f JS |
186 | struct dvb_device *dvbdev = file->private_data; |
187 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 | 188 | |
c2788502 | 189 | mutex_lock(&dmxdev->mutex); |
1da177e4 | 190 | |
f705e6e4 | 191 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
1da177e4 LT |
192 | dmxdev->demux->disconnect_frontend(dmxdev->demux); |
193 | dmxdev->demux->connect_frontend(dmxdev->demux, | |
194 | dmxdev->dvr_orig_fe); | |
195 | } | |
f705e6e4 | 196 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
5e85bd05 | 197 | dvbdev->readers++; |
1da177e4 | 198 | if (dmxdev->dvr_buffer.data) { |
f705e6e4 | 199 | void *mem = dmxdev->dvr_buffer.data; |
1da177e4 LT |
200 | mb(); |
201 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 202 | dmxdev->dvr_buffer.data = NULL; |
1da177e4 LT |
203 | spin_unlock_irq(&dmxdev->lock); |
204 | vfree(mem); | |
205 | } | |
206 | } | |
57861b43 MR |
207 | /* TODO */ |
208 | dvbdev->users--; | |
209 | if(dvbdev->users==-1 && dmxdev->exit==1) { | |
210 | fops_put(file->f_op); | |
211 | file->f_op = NULL; | |
212 | mutex_unlock(&dmxdev->mutex); | |
213 | wake_up(&dvbdev->wait_queue); | |
214 | } else | |
215 | mutex_unlock(&dmxdev->mutex); | |
216 | ||
1da177e4 LT |
217 | return 0; |
218 | } | |
219 | ||
220 | static ssize_t dvb_dvr_write(struct file *file, const char __user *buf, | |
f705e6e4 | 221 | size_t count, loff_t *ppos) |
1da177e4 | 222 | { |
0c53c70f JS |
223 | struct dvb_device *dvbdev = file->private_data; |
224 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
225 | int ret; |
226 | ||
227 | if (!dmxdev->demux->write) | |
228 | return -EOPNOTSUPP; | |
f705e6e4 | 229 | if ((file->f_flags & O_ACCMODE) != O_WRONLY) |
1da177e4 | 230 | return -EINVAL; |
3593cab5 | 231 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 | 232 | return -ERESTARTSYS; |
57861b43 MR |
233 | |
234 | if (dmxdev->exit) { | |
235 | mutex_unlock(&dmxdev->mutex); | |
236 | return -ENODEV; | |
237 | } | |
f705e6e4 | 238 | ret = dmxdev->demux->write(dmxdev->demux, buf, count); |
3593cab5 | 239 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
240 | return ret; |
241 | } | |
242 | ||
243 | static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count, | |
f705e6e4 | 244 | loff_t *ppos) |
1da177e4 | 245 | { |
0c53c70f JS |
246 | struct dvb_device *dvbdev = file->private_data; |
247 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
248 | int ret; |
249 | ||
57861b43 MR |
250 | if (dmxdev->exit) { |
251 | mutex_unlock(&dmxdev->mutex); | |
252 | return -ENODEV; | |
253 | } | |
254 | ||
3593cab5 | 255 | //mutex_lock(&dmxdev->mutex); |
f705e6e4 AO |
256 | ret = dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer, |
257 | file->f_flags & O_NONBLOCK, | |
258 | buf, count, ppos); | |
3593cab5 | 259 | //mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
260 | return ret; |
261 | } | |
262 | ||
f705e6e4 AO |
263 | static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter |
264 | *dmxdevfilter, int state) | |
1da177e4 LT |
265 | { |
266 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 267 | dmxdevfilter->state = state; |
1da177e4 LT |
268 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
269 | } | |
270 | ||
f705e6e4 AO |
271 | static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, |
272 | unsigned long size) | |
1da177e4 | 273 | { |
34731df2 | 274 | struct dvb_ringbuffer *buf = &dmxdevfilter->buffer; |
1da177e4 LT |
275 | void *mem; |
276 | ||
f705e6e4 | 277 | if (buf->size == size) |
1da177e4 | 278 | return 0; |
f705e6e4 | 279 | if (dmxdevfilter->state >= DMXDEV_STATE_GO) |
1da177e4 LT |
280 | return -EBUSY; |
281 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 AO |
282 | mem = buf->data; |
283 | buf->data = NULL; | |
284 | buf->size = size; | |
34731df2 | 285 | dvb_ringbuffer_flush(buf); |
1da177e4 LT |
286 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
287 | vfree(mem); | |
288 | ||
289 | if (buf->size) { | |
f705e6e4 | 290 | mem = vmalloc(dmxdevfilter->buffer.size); |
1da177e4 LT |
291 | if (!mem) |
292 | return -ENOMEM; | |
293 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 294 | buf->data = mem; |
1da177e4 LT |
295 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
296 | } | |
297 | return 0; | |
298 | } | |
299 | ||
300 | static void dvb_dmxdev_filter_timeout(unsigned long data) | |
301 | { | |
f705e6e4 | 302 | struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data; |
1da177e4 | 303 | |
f705e6e4 | 304 | dmxdevfilter->buffer.error = -ETIMEDOUT; |
1da177e4 | 305 | spin_lock_irq(&dmxdevfilter->dev->lock); |
f705e6e4 | 306 | dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT; |
1da177e4 LT |
307 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
308 | wake_up(&dmxdevfilter->buffer.queue); | |
309 | } | |
310 | ||
311 | static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter) | |
312 | { | |
f705e6e4 | 313 | struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec; |
1da177e4 LT |
314 | |
315 | del_timer(&dmxdevfilter->timer); | |
316 | if (para->timeout) { | |
f705e6e4 AO |
317 | dmxdevfilter->timer.function = dvb_dmxdev_filter_timeout; |
318 | dmxdevfilter->timer.data = (unsigned long)dmxdevfilter; | |
319 | dmxdevfilter->timer.expires = | |
320 | jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000; | |
1da177e4 LT |
321 | add_timer(&dmxdevfilter->timer); |
322 | } | |
323 | } | |
324 | ||
325 | static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
326 | const u8 *buffer2, size_t buffer2_len, |
327 | struct dmx_section_filter *filter, | |
328 | enum dmx_success success) | |
1da177e4 | 329 | { |
0c53c70f | 330 | struct dmxdev_filter *dmxdevfilter = filter->priv; |
1da177e4 LT |
331 | int ret; |
332 | ||
333 | if (dmxdevfilter->buffer.error) { | |
334 | wake_up(&dmxdevfilter->buffer.queue); | |
335 | return 0; | |
336 | } | |
337 | spin_lock(&dmxdevfilter->dev->lock); | |
f705e6e4 | 338 | if (dmxdevfilter->state != DMXDEV_STATE_GO) { |
1da177e4 LT |
339 | spin_unlock(&dmxdevfilter->dev->lock); |
340 | return 0; | |
341 | } | |
342 | del_timer(&dmxdevfilter->timer); | |
343 | dprintk("dmxdev: section callback %02x %02x %02x %02x %02x %02x\n", | |
344 | buffer1[0], buffer1[1], | |
f705e6e4 AO |
345 | buffer1[2], buffer1[3], buffer1[4], buffer1[5]); |
346 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1, | |
347 | buffer1_len); | |
348 | if (ret == buffer1_len) { | |
349 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2, | |
350 | buffer2_len); | |
1da177e4 | 351 | } |
f705e6e4 | 352 | if (ret < 0) { |
34731df2 AO |
353 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); |
354 | dmxdevfilter->buffer.error = ret; | |
1da177e4 | 355 | } |
f705e6e4 AO |
356 | if (dmxdevfilter->params.sec.flags & DMX_ONESHOT) |
357 | dmxdevfilter->state = DMXDEV_STATE_DONE; | |
1da177e4 LT |
358 | spin_unlock(&dmxdevfilter->dev->lock); |
359 | wake_up(&dmxdevfilter->buffer.queue); | |
360 | return 0; | |
361 | } | |
362 | ||
363 | static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
364 | const u8 *buffer2, size_t buffer2_len, |
365 | struct dmx_ts_feed *feed, | |
366 | enum dmx_success success) | |
1da177e4 | 367 | { |
0c53c70f | 368 | struct dmxdev_filter *dmxdevfilter = feed->priv; |
34731df2 | 369 | struct dvb_ringbuffer *buffer; |
1da177e4 LT |
370 | int ret; |
371 | ||
372 | spin_lock(&dmxdevfilter->dev->lock); | |
f705e6e4 | 373 | if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) { |
1da177e4 LT |
374 | spin_unlock(&dmxdevfilter->dev->lock); |
375 | return 0; | |
376 | } | |
377 | ||
f705e6e4 AO |
378 | if (dmxdevfilter->params.pes.output == DMX_OUT_TAP) |
379 | buffer = &dmxdevfilter->buffer; | |
1da177e4 | 380 | else |
f705e6e4 | 381 | buffer = &dmxdevfilter->dev->dvr_buffer; |
1da177e4 LT |
382 | if (buffer->error) { |
383 | spin_unlock(&dmxdevfilter->dev->lock); | |
384 | wake_up(&buffer->queue); | |
385 | return 0; | |
386 | } | |
f705e6e4 AO |
387 | ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len); |
388 | if (ret == buffer1_len) | |
389 | ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len); | |
390 | if (ret < 0) { | |
34731df2 AO |
391 | dvb_ringbuffer_flush(buffer); |
392 | buffer->error = ret; | |
1da177e4 LT |
393 | } |
394 | spin_unlock(&dmxdevfilter->dev->lock); | |
395 | wake_up(&buffer->queue); | |
396 | return 0; | |
397 | } | |
398 | ||
1da177e4 | 399 | /* stop feed but only mark the specified filter as stopped (state set) */ |
1da177e4 LT |
400 | static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter) |
401 | { | |
402 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
403 | ||
404 | switch (dmxdevfilter->type) { | |
405 | case DMXDEV_TYPE_SEC: | |
406 | del_timer(&dmxdevfilter->timer); | |
407 | dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec); | |
408 | break; | |
409 | case DMXDEV_TYPE_PES: | |
410 | dmxdevfilter->feed.ts->stop_filtering(dmxdevfilter->feed.ts); | |
411 | break; | |
412 | default: | |
413 | return -EINVAL; | |
414 | } | |
415 | return 0; | |
416 | } | |
417 | ||
1da177e4 | 418 | /* start feed associated with the specified filter */ |
1da177e4 LT |
419 | static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter) |
420 | { | |
f705e6e4 | 421 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); |
1da177e4 LT |
422 | |
423 | switch (filter->type) { | |
424 | case DMXDEV_TYPE_SEC: | |
425 | return filter->feed.sec->start_filtering(filter->feed.sec); | |
1da177e4 LT |
426 | case DMXDEV_TYPE_PES: |
427 | return filter->feed.ts->start_filtering(filter->feed.ts); | |
1da177e4 LT |
428 | default: |
429 | return -EINVAL; | |
430 | } | |
431 | ||
432 | return 0; | |
433 | } | |
434 | ||
1da177e4 LT |
435 | /* restart section feed if it has filters left associated with it, |
436 | otherwise release the feed */ | |
1da177e4 LT |
437 | static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter) |
438 | { | |
439 | int i; | |
440 | struct dmxdev *dmxdev = filter->dev; | |
441 | u16 pid = filter->params.sec.pid; | |
442 | ||
f705e6e4 AO |
443 | for (i = 0; i < dmxdev->filternum; i++) |
444 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && | |
445 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && | |
446 | dmxdev->filter[i].params.sec.pid == pid) { | |
1da177e4 LT |
447 | dvb_dmxdev_feed_start(&dmxdev->filter[i]); |
448 | return 0; | |
449 | } | |
450 | ||
f705e6e4 AO |
451 | filter->dev->demux->release_section_feed(dmxdev->demux, |
452 | filter->feed.sec); | |
1da177e4 LT |
453 | |
454 | return 0; | |
455 | } | |
456 | ||
457 | static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter) | |
458 | { | |
f705e6e4 | 459 | if (dmxdevfilter->state < DMXDEV_STATE_GO) |
1da177e4 LT |
460 | return 0; |
461 | ||
462 | switch (dmxdevfilter->type) { | |
463 | case DMXDEV_TYPE_SEC: | |
464 | if (!dmxdevfilter->feed.sec) | |
465 | break; | |
466 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
467 | if (dmxdevfilter->filter.sec) | |
468 | dmxdevfilter->feed.sec-> | |
f705e6e4 AO |
469 | release_filter(dmxdevfilter->feed.sec, |
470 | dmxdevfilter->filter.sec); | |
1da177e4 | 471 | dvb_dmxdev_feed_restart(dmxdevfilter); |
f705e6e4 | 472 | dmxdevfilter->feed.sec = NULL; |
1da177e4 LT |
473 | break; |
474 | case DMXDEV_TYPE_PES: | |
475 | if (!dmxdevfilter->feed.ts) | |
476 | break; | |
477 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
478 | dmxdevfilter->dev->demux-> | |
f705e6e4 AO |
479 | release_ts_feed(dmxdevfilter->dev->demux, |
480 | dmxdevfilter->feed.ts); | |
481 | dmxdevfilter->feed.ts = NULL; | |
1da177e4 LT |
482 | break; |
483 | default: | |
f705e6e4 | 484 | if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED) |
1da177e4 LT |
485 | return 0; |
486 | return -EINVAL; | |
487 | } | |
34731df2 AO |
488 | |
489 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); | |
1da177e4 LT |
490 | return 0; |
491 | } | |
492 | ||
493 | static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter) | |
494 | { | |
f705e6e4 | 495 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
496 | return 0; |
497 | ||
f705e6e4 | 498 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 LT |
499 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
500 | return 0; | |
501 | } | |
502 | ||
503 | static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) | |
504 | { | |
505 | struct dmxdev *dmxdev = filter->dev; | |
506 | void *mem; | |
507 | int ret, i; | |
508 | ||
509 | if (filter->state < DMXDEV_STATE_SET) | |
510 | return -EINVAL; | |
511 | ||
512 | if (filter->state >= DMXDEV_STATE_GO) | |
513 | dvb_dmxdev_filter_stop(filter); | |
514 | ||
34731df2 | 515 | if (!filter->buffer.data) { |
1da177e4 | 516 | mem = vmalloc(filter->buffer.size); |
34731df2 AO |
517 | if (!mem) |
518 | return -ENOMEM; | |
1da177e4 | 519 | spin_lock_irq(&filter->dev->lock); |
f705e6e4 | 520 | filter->buffer.data = mem; |
1da177e4 | 521 | spin_unlock_irq(&filter->dev->lock); |
1da177e4 LT |
522 | } |
523 | ||
34731df2 | 524 | dvb_ringbuffer_flush(&filter->buffer); |
1da177e4 LT |
525 | |
526 | switch (filter->type) { | |
527 | case DMXDEV_TYPE_SEC: | |
528 | { | |
f705e6e4 AO |
529 | struct dmx_sct_filter_params *para = &filter->params.sec; |
530 | struct dmx_section_filter **secfilter = &filter->filter.sec; | |
531 | struct dmx_section_feed **secfeed = &filter->feed.sec; | |
532 | ||
533 | *secfilter = NULL; | |
534 | *secfeed = NULL; | |
1da177e4 | 535 | |
1da177e4 LT |
536 | |
537 | /* find active filter/feed with same PID */ | |
f705e6e4 | 538 | for (i = 0; i < dmxdev->filternum; i++) { |
1da177e4 | 539 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && |
09794a6f AO |
540 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && |
541 | dmxdev->filter[i].params.sec.pid == para->pid) { | |
1da177e4 LT |
542 | *secfeed = dmxdev->filter[i].feed.sec; |
543 | break; | |
544 | } | |
545 | } | |
546 | ||
547 | /* if no feed found, try to allocate new one */ | |
548 | if (!*secfeed) { | |
f705e6e4 AO |
549 | ret = dmxdev->demux->allocate_section_feed(dmxdev->demux, |
550 | secfeed, | |
551 | dvb_dmxdev_section_callback); | |
552 | if (ret < 0) { | |
553 | printk("DVB (%s): could not alloc feed\n", | |
554 | __FUNCTION__); | |
1da177e4 LT |
555 | return ret; |
556 | } | |
557 | ||
f705e6e4 AO |
558 | ret = (*secfeed)->set(*secfeed, para->pid, 32768, |
559 | (para->flags & DMX_CHECK_CRC) ? 1 : 0); | |
560 | if (ret < 0) { | |
561 | printk("DVB (%s): could not set feed\n", | |
562 | __FUNCTION__); | |
1da177e4 LT |
563 | dvb_dmxdev_feed_restart(filter); |
564 | return ret; | |
565 | } | |
566 | } else { | |
567 | dvb_dmxdev_feed_stop(filter); | |
568 | } | |
569 | ||
f705e6e4 | 570 | ret = (*secfeed)->allocate_filter(*secfeed, secfilter); |
1da177e4 LT |
571 | if (ret < 0) { |
572 | dvb_dmxdev_feed_restart(filter); | |
573 | filter->feed.sec->start_filtering(*secfeed); | |
f705e6e4 | 574 | dprintk("could not get filter\n"); |
1da177e4 LT |
575 | return ret; |
576 | } | |
577 | ||
578 | (*secfilter)->priv = filter; | |
579 | ||
580 | memcpy(&((*secfilter)->filter_value[3]), | |
f705e6e4 | 581 | &(para->filter.filter[1]), DMX_FILTER_SIZE - 1); |
1da177e4 | 582 | memcpy(&(*secfilter)->filter_mask[3], |
f705e6e4 | 583 | ¶->filter.mask[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 584 | memcpy(&(*secfilter)->filter_mode[3], |
f705e6e4 | 585 | ¶->filter.mode[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 586 | |
f705e6e4 AO |
587 | (*secfilter)->filter_value[0] = para->filter.filter[0]; |
588 | (*secfilter)->filter_mask[0] = para->filter.mask[0]; | |
589 | (*secfilter)->filter_mode[0] = para->filter.mode[0]; | |
590 | (*secfilter)->filter_mask[1] = 0; | |
591 | (*secfilter)->filter_mask[2] = 0; | |
1da177e4 LT |
592 | |
593 | filter->todo = 0; | |
594 | ||
f705e6e4 | 595 | ret = filter->feed.sec->start_filtering(filter->feed.sec); |
1da177e4 LT |
596 | if (ret < 0) |
597 | return ret; | |
598 | ||
599 | dvb_dmxdev_filter_timer(filter); | |
600 | break; | |
601 | } | |
1da177e4 LT |
602 | case DMXDEV_TYPE_PES: |
603 | { | |
604 | struct timespec timeout = { 0 }; | |
605 | struct dmx_pes_filter_params *para = &filter->params.pes; | |
606 | dmx_output_t otype; | |
607 | int ret; | |
608 | int ts_type; | |
609 | enum dmx_ts_pes ts_pes; | |
610 | struct dmx_ts_feed **tsfeed = &filter->feed.ts; | |
611 | ||
612 | filter->feed.ts = NULL; | |
f705e6e4 | 613 | otype = para->output; |
1da177e4 | 614 | |
f705e6e4 | 615 | ts_pes = (enum dmx_ts_pes)para->pes_type; |
1da177e4 | 616 | |
f705e6e4 AO |
617 | if (ts_pes < DMX_PES_OTHER) |
618 | ts_type = TS_DECODER; | |
1da177e4 | 619 | else |
f705e6e4 | 620 | ts_type = 0; |
1da177e4 LT |
621 | |
622 | if (otype == DMX_OUT_TS_TAP) | |
623 | ts_type |= TS_PACKET; | |
624 | ||
625 | if (otype == DMX_OUT_TAP) | |
f705e6e4 | 626 | ts_type |= TS_PAYLOAD_ONLY | TS_PACKET; |
1da177e4 | 627 | |
f705e6e4 AO |
628 | ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, |
629 | tsfeed, | |
630 | dvb_dmxdev_ts_callback); | |
631 | if (ret < 0) | |
1da177e4 LT |
632 | return ret; |
633 | ||
f705e6e4 | 634 | (*tsfeed)->priv = filter; |
1da177e4 LT |
635 | |
636 | ret = (*tsfeed)->set(*tsfeed, para->pid, ts_type, ts_pes, | |
5d2cd163 | 637 | 32768, timeout); |
1da177e4 | 638 | if (ret < 0) { |
f705e6e4 AO |
639 | dmxdev->demux->release_ts_feed(dmxdev->demux, |
640 | *tsfeed); | |
1da177e4 LT |
641 | return ret; |
642 | } | |
643 | ||
644 | ret = filter->feed.ts->start_filtering(filter->feed.ts); | |
76197924 | 645 | if (ret < 0) { |
f705e6e4 AO |
646 | dmxdev->demux->release_ts_feed(dmxdev->demux, |
647 | *tsfeed); | |
1da177e4 | 648 | return ret; |
76197924 | 649 | } |
1da177e4 LT |
650 | |
651 | break; | |
652 | } | |
653 | default: | |
654 | return -EINVAL; | |
655 | } | |
656 | ||
657 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); | |
658 | return 0; | |
659 | } | |
660 | ||
661 | static int dvb_demux_open(struct inode *inode, struct file *file) | |
662 | { | |
0c53c70f JS |
663 | struct dvb_device *dvbdev = file->private_data; |
664 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
665 | int i; |
666 | struct dmxdev_filter *dmxdevfilter; | |
667 | ||
668 | if (!dmxdev->filter) | |
669 | return -EINVAL; | |
670 | ||
3593cab5 | 671 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
672 | return -ERESTARTSYS; |
673 | ||
f705e6e4 AO |
674 | for (i = 0; i < dmxdev->filternum; i++) |
675 | if (dmxdev->filter[i].state == DMXDEV_STATE_FREE) | |
1da177e4 LT |
676 | break; |
677 | ||
f705e6e4 | 678 | if (i == dmxdev->filternum) { |
3593cab5 | 679 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
680 | return -EMFILE; |
681 | } | |
682 | ||
f705e6e4 | 683 | dmxdevfilter = &dmxdev->filter[i]; |
3593cab5 | 684 | mutex_init(&dmxdevfilter->mutex); |
f705e6e4 | 685 | file->private_data = dmxdevfilter; |
1da177e4 | 686 | |
34731df2 | 687 | dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192); |
f705e6e4 | 688 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 | 689 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
f705e6e4 | 690 | dmxdevfilter->feed.ts = NULL; |
1da177e4 LT |
691 | init_timer(&dmxdevfilter->timer); |
692 | ||
57861b43 MR |
693 | dvbdev->users++; |
694 | ||
3593cab5 | 695 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
696 | return 0; |
697 | } | |
698 | ||
f705e6e4 AO |
699 | static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, |
700 | struct dmxdev_filter *dmxdevfilter) | |
1da177e4 | 701 | { |
c2788502 SA |
702 | mutex_lock(&dmxdev->mutex); |
703 | mutex_lock(&dmxdevfilter->mutex); | |
1da177e4 LT |
704 | |
705 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
706 | dvb_dmxdev_filter_reset(dmxdevfilter); | |
707 | ||
708 | if (dmxdevfilter->buffer.data) { | |
f705e6e4 | 709 | void *mem = dmxdevfilter->buffer.data; |
1da177e4 LT |
710 | |
711 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 712 | dmxdevfilter->buffer.data = NULL; |
1da177e4 LT |
713 | spin_unlock_irq(&dmxdev->lock); |
714 | vfree(mem); | |
715 | } | |
716 | ||
717 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE); | |
718 | wake_up(&dmxdevfilter->buffer.queue); | |
3593cab5 IM |
719 | mutex_unlock(&dmxdevfilter->mutex); |
720 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
721 | return 0; |
722 | } | |
723 | ||
724 | static inline void invert_mode(dmx_filter_t *filter) | |
725 | { | |
726 | int i; | |
727 | ||
f705e6e4 AO |
728 | for (i = 0; i < DMX_FILTER_SIZE; i++) |
729 | filter->mode[i] ^= 0xff; | |
1da177e4 LT |
730 | } |
731 | ||
1da177e4 | 732 | static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev, |
f705e6e4 AO |
733 | struct dmxdev_filter *dmxdevfilter, |
734 | struct dmx_sct_filter_params *params) | |
1da177e4 | 735 | { |
f705e6e4 | 736 | dprintk("function : %s\n", __FUNCTION__); |
1da177e4 LT |
737 | |
738 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
739 | ||
f705e6e4 | 740 | dmxdevfilter->type = DMXDEV_TYPE_SEC; |
1da177e4 LT |
741 | memcpy(&dmxdevfilter->params.sec, |
742 | params, sizeof(struct dmx_sct_filter_params)); | |
743 | invert_mode(&dmxdevfilter->params.sec.filter); | |
744 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
745 | ||
f705e6e4 | 746 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
747 | return dvb_dmxdev_filter_start(dmxdevfilter); |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev, | |
f705e6e4 AO |
753 | struct dmxdev_filter *dmxdevfilter, |
754 | struct dmx_pes_filter_params *params) | |
1da177e4 LT |
755 | { |
756 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
757 | ||
f705e6e4 | 758 | if (params->pes_type > DMX_PES_OTHER || params->pes_type < 0) |
1da177e4 LT |
759 | return -EINVAL; |
760 | ||
f705e6e4 AO |
761 | dmxdevfilter->type = DMXDEV_TYPE_PES; |
762 | memcpy(&dmxdevfilter->params, params, | |
763 | sizeof(struct dmx_pes_filter_params)); | |
1da177e4 LT |
764 | |
765 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
766 | ||
f705e6e4 | 767 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
768 | return dvb_dmxdev_filter_start(dmxdevfilter); |
769 | ||
770 | return 0; | |
771 | } | |
772 | ||
773 | static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil, | |
f705e6e4 AO |
774 | struct file *file, char __user *buf, |
775 | size_t count, loff_t *ppos) | |
1da177e4 LT |
776 | { |
777 | int result, hcount; | |
f705e6e4 AO |
778 | int done = 0; |
779 | ||
780 | if (dfil->todo <= 0) { | |
781 | hcount = 3 + dfil->todo; | |
782 | if (hcount > count) | |
783 | hcount = count; | |
784 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
785 | file->f_flags & O_NONBLOCK, | |
786 | buf, hcount, ppos); | |
787 | if (result < 0) { | |
788 | dfil->todo = 0; | |
1da177e4 LT |
789 | return result; |
790 | } | |
f705e6e4 | 791 | if (copy_from_user(dfil->secheader - dfil->todo, buf, result)) |
1da177e4 | 792 | return -EFAULT; |
f705e6e4 AO |
793 | buf += result; |
794 | done = result; | |
795 | count -= result; | |
796 | dfil->todo -= result; | |
797 | if (dfil->todo > -3) | |
1da177e4 | 798 | return done; |
f705e6e4 | 799 | dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff; |
1da177e4 LT |
800 | if (!count) |
801 | return done; | |
802 | } | |
f705e6e4 AO |
803 | if (count > dfil->todo) |
804 | count = dfil->todo; | |
805 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
806 | file->f_flags & O_NONBLOCK, | |
807 | buf, count, ppos); | |
808 | if (result < 0) | |
1da177e4 | 809 | return result; |
f705e6e4 AO |
810 | dfil->todo -= result; |
811 | return (result + done); | |
1da177e4 LT |
812 | } |
813 | ||
1da177e4 | 814 | static ssize_t |
f705e6e4 AO |
815 | dvb_demux_read(struct file *file, char __user *buf, size_t count, |
816 | loff_t *ppos) | |
1da177e4 | 817 | { |
f705e6e4 AO |
818 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
819 | int ret; | |
1da177e4 | 820 | |
3593cab5 | 821 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) |
1da177e4 LT |
822 | return -ERESTARTSYS; |
823 | ||
f705e6e4 AO |
824 | if (dmxdevfilter->type == DMXDEV_TYPE_SEC) |
825 | ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos); | |
1da177e4 | 826 | else |
f705e6e4 AO |
827 | ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer, |
828 | file->f_flags & O_NONBLOCK, | |
829 | buf, count, ppos); | |
1da177e4 | 830 | |
3593cab5 | 831 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
832 | return ret; |
833 | } | |
834 | ||
1da177e4 LT |
835 | static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, |
836 | unsigned int cmd, void *parg) | |
837 | { | |
3ec4a307 | 838 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
f705e6e4 AO |
839 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
840 | unsigned long arg = (unsigned long)parg; | |
841 | int ret = 0; | |
1da177e4 | 842 | |
3593cab5 | 843 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
844 | return -ERESTARTSYS; |
845 | ||
846 | switch (cmd) { | |
847 | case DMX_START: | |
3593cab5 IM |
848 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
849 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
850 | return -ERESTARTSYS; |
851 | } | |
f705e6e4 | 852 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
853 | ret = -EINVAL; |
854 | else | |
855 | ret = dvb_dmxdev_filter_start(dmxdevfilter); | |
3593cab5 | 856 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
857 | break; |
858 | ||
859 | case DMX_STOP: | |
3593cab5 IM |
860 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
861 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
862 | return -ERESTARTSYS; |
863 | } | |
f705e6e4 | 864 | ret = dvb_dmxdev_filter_stop(dmxdevfilter); |
3593cab5 | 865 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
866 | break; |
867 | ||
868 | case DMX_SET_FILTER: | |
3593cab5 IM |
869 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
870 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
871 | return -ERESTARTSYS; |
872 | } | |
f705e6e4 | 873 | ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 874 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
875 | break; |
876 | ||
877 | case DMX_SET_PES_FILTER: | |
3593cab5 IM |
878 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
879 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
880 | return -ERESTARTSYS; |
881 | } | |
f705e6e4 | 882 | ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 883 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
884 | break; |
885 | ||
886 | case DMX_SET_BUFFER_SIZE: | |
3593cab5 IM |
887 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
888 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
889 | return -ERESTARTSYS; |
890 | } | |
f705e6e4 | 891 | ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg); |
3593cab5 | 892 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
893 | break; |
894 | ||
1da177e4 LT |
895 | case DMX_GET_PES_PIDS: |
896 | if (!dmxdev->demux->get_pes_pids) { | |
f705e6e4 | 897 | ret = -EINVAL; |
1da177e4 LT |
898 | break; |
899 | } | |
f705e6e4 | 900 | dmxdev->demux->get_pes_pids(dmxdev->demux, parg); |
1da177e4 LT |
901 | break; |
902 | ||
c0510052 AO |
903 | case DMX_GET_CAPS: |
904 | if (!dmxdev->demux->get_caps) { | |
905 | ret = -EINVAL; | |
906 | break; | |
907 | } | |
908 | ret = dmxdev->demux->get_caps(dmxdev->demux, parg); | |
909 | break; | |
910 | ||
911 | case DMX_SET_SOURCE: | |
912 | if (!dmxdev->demux->set_source) { | |
913 | ret = -EINVAL; | |
914 | break; | |
915 | } | |
916 | ret = dmxdev->demux->set_source(dmxdev->demux, parg); | |
917 | break; | |
918 | ||
1da177e4 LT |
919 | case DMX_GET_STC: |
920 | if (!dmxdev->demux->get_stc) { | |
f705e6e4 | 921 | ret = -EINVAL; |
1da177e4 LT |
922 | break; |
923 | } | |
924 | ret = dmxdev->demux->get_stc(dmxdev->demux, | |
f705e6e4 AO |
925 | ((struct dmx_stc *)parg)->num, |
926 | &((struct dmx_stc *)parg)->stc, | |
927 | &((struct dmx_stc *)parg)->base); | |
1da177e4 LT |
928 | break; |
929 | ||
930 | default: | |
f705e6e4 AO |
931 | ret = -EINVAL; |
932 | break; | |
1da177e4 | 933 | } |
3593cab5 | 934 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
935 | return ret; |
936 | } | |
937 | ||
938 | static int dvb_demux_ioctl(struct inode *inode, struct file *file, | |
939 | unsigned int cmd, unsigned long arg) | |
940 | { | |
941 | return dvb_usercopy(inode, file, cmd, arg, dvb_demux_do_ioctl); | |
942 | } | |
943 | ||
f705e6e4 | 944 | static unsigned int dvb_demux_poll(struct file *file, poll_table *wait) |
1da177e4 | 945 | { |
3ec4a307 | 946 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
947 | unsigned int mask = 0; |
948 | ||
949 | if (!dmxdevfilter) | |
950 | return -EINVAL; | |
951 | ||
952 | poll_wait(file, &dmxdevfilter->buffer.queue, wait); | |
953 | ||
954 | if (dmxdevfilter->state != DMXDEV_STATE_GO && | |
955 | dmxdevfilter->state != DMXDEV_STATE_DONE && | |
956 | dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT) | |
957 | return 0; | |
958 | ||
959 | if (dmxdevfilter->buffer.error) | |
960 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
961 | ||
34731df2 | 962 | if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer)) |
1da177e4 LT |
963 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
964 | ||
965 | return mask; | |
966 | } | |
967 | ||
1da177e4 LT |
968 | static int dvb_demux_release(struct inode *inode, struct file *file) |
969 | { | |
3ec4a307 | 970 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
971 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
972 | ||
57861b43 MR |
973 | int ret; |
974 | ||
975 | ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter); | |
976 | ||
977 | mutex_lock(&dmxdev->mutex); | |
978 | dmxdev->dvbdev->users--; | |
979 | if(dmxdev->dvbdev->users==1 && dmxdev->exit==1) { | |
980 | fops_put(file->f_op); | |
981 | file->f_op = NULL; | |
982 | mutex_unlock(&dmxdev->mutex); | |
983 | wake_up(&dmxdev->dvbdev->wait_queue); | |
984 | } else | |
985 | mutex_unlock(&dmxdev->mutex); | |
986 | ||
987 | return ret; | |
1da177e4 LT |
988 | } |
989 | ||
1da177e4 | 990 | static struct file_operations dvb_demux_fops = { |
f705e6e4 AO |
991 | .owner = THIS_MODULE, |
992 | .read = dvb_demux_read, | |
993 | .ioctl = dvb_demux_ioctl, | |
994 | .open = dvb_demux_open, | |
995 | .release = dvb_demux_release, | |
996 | .poll = dvb_demux_poll, | |
1da177e4 LT |
997 | }; |
998 | ||
1da177e4 | 999 | static struct dvb_device dvbdev_demux = { |
f705e6e4 AO |
1000 | .priv = NULL, |
1001 | .users = 1, | |
1002 | .writers = 1, | |
1003 | .fops = &dvb_demux_fops | |
1da177e4 LT |
1004 | }; |
1005 | ||
1da177e4 | 1006 | static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file, |
f705e6e4 | 1007 | unsigned int cmd, void *parg) |
1da177e4 | 1008 | { |
0c53c70f JS |
1009 | struct dvb_device *dvbdev = file->private_data; |
1010 | struct dmxdev *dmxdev = dvbdev->priv; | |
f705e6e4 | 1011 | int ret; |
1da177e4 | 1012 | |
3593cab5 | 1013 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
1014 | return -ERESTARTSYS; |
1015 | ||
1016 | switch (cmd) { | |
1017 | case DMX_SET_BUFFER_SIZE: | |
1018 | // FIXME: implement | |
f705e6e4 | 1019 | ret = 0; |
1da177e4 LT |
1020 | break; |
1021 | ||
1022 | default: | |
f705e6e4 AO |
1023 | ret = -EINVAL; |
1024 | break; | |
1da177e4 | 1025 | } |
3593cab5 | 1026 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
1027 | return ret; |
1028 | } | |
1029 | ||
1da177e4 | 1030 | static int dvb_dvr_ioctl(struct inode *inode, struct file *file, |
f705e6e4 | 1031 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
1032 | { |
1033 | return dvb_usercopy(inode, file, cmd, arg, dvb_dvr_do_ioctl); | |
1034 | } | |
1035 | ||
f705e6e4 | 1036 | static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait) |
1da177e4 | 1037 | { |
0c53c70f JS |
1038 | struct dvb_device *dvbdev = file->private_data; |
1039 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
1040 | unsigned int mask = 0; |
1041 | ||
f705e6e4 | 1042 | dprintk("function : %s\n", __FUNCTION__); |
1da177e4 LT |
1043 | |
1044 | poll_wait(file, &dmxdev->dvr_buffer.queue, wait); | |
1045 | ||
f705e6e4 | 1046 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
1da177e4 LT |
1047 | if (dmxdev->dvr_buffer.error) |
1048 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
1049 | ||
34731df2 | 1050 | if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer)) |
1da177e4 LT |
1051 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
1052 | } else | |
1053 | mask |= (POLLOUT | POLLWRNORM | POLLPRI); | |
1054 | ||
1055 | return mask; | |
1056 | } | |
1057 | ||
1da177e4 | 1058 | static struct file_operations dvb_dvr_fops = { |
f705e6e4 AO |
1059 | .owner = THIS_MODULE, |
1060 | .read = dvb_dvr_read, | |
1061 | .write = dvb_dvr_write, | |
1062 | .ioctl = dvb_dvr_ioctl, | |
1063 | .open = dvb_dvr_open, | |
1064 | .release = dvb_dvr_release, | |
1065 | .poll = dvb_dvr_poll, | |
1da177e4 LT |
1066 | }; |
1067 | ||
1068 | static struct dvb_device dvbdev_dvr = { | |
f705e6e4 | 1069 | .priv = NULL, |
5e85bd05 | 1070 | .readers = 1, |
57861b43 | 1071 | .users = 1, |
f705e6e4 | 1072 | .fops = &dvb_dvr_fops |
1da177e4 LT |
1073 | }; |
1074 | ||
f705e6e4 | 1075 | int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) |
1da177e4 LT |
1076 | { |
1077 | int i; | |
1078 | ||
1079 | if (dmxdev->demux->open(dmxdev->demux) < 0) | |
1080 | return -EUSERS; | |
1081 | ||
f705e6e4 | 1082 | dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter)); |
1da177e4 LT |
1083 | if (!dmxdev->filter) |
1084 | return -ENOMEM; | |
1085 | ||
3593cab5 | 1086 | mutex_init(&dmxdev->mutex); |
1da177e4 | 1087 | spin_lock_init(&dmxdev->lock); |
f705e6e4 AO |
1088 | for (i = 0; i < dmxdev->filternum; i++) { |
1089 | dmxdev->filter[i].dev = dmxdev; | |
1090 | dmxdev->filter[i].buffer.data = NULL; | |
1091 | dvb_dmxdev_filter_state_set(&dmxdev->filter[i], | |
1092 | DMXDEV_STATE_FREE); | |
1da177e4 LT |
1093 | } |
1094 | ||
f705e6e4 AO |
1095 | dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, |
1096 | DVB_DEVICE_DEMUX); | |
1097 | dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, | |
1098 | dmxdev, DVB_DEVICE_DVR); | |
1da177e4 | 1099 | |
34731df2 | 1100 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192); |
1da177e4 LT |
1101 | |
1102 | return 0; | |
1103 | } | |
f705e6e4 | 1104 | |
1da177e4 LT |
1105 | EXPORT_SYMBOL(dvb_dmxdev_init); |
1106 | ||
f705e6e4 | 1107 | void dvb_dmxdev_release(struct dmxdev *dmxdev) |
1da177e4 | 1108 | { |
57861b43 MR |
1109 | dmxdev->exit=1; |
1110 | if (dmxdev->dvbdev->users > 1) { | |
1111 | wait_event(dmxdev->dvbdev->wait_queue, | |
1112 | dmxdev->dvbdev->users==1); | |
1113 | } | |
1114 | if (dmxdev->dvr_dvbdev->users > 1) { | |
1115 | wait_event(dmxdev->dvr_dvbdev->wait_queue, | |
1116 | dmxdev->dvr_dvbdev->users==1); | |
1117 | } | |
1118 | ||
1da177e4 LT |
1119 | dvb_unregister_device(dmxdev->dvbdev); |
1120 | dvb_unregister_device(dmxdev->dvr_dvbdev); | |
1121 | ||
1122 | vfree(dmxdev->filter); | |
f705e6e4 | 1123 | dmxdev->filter = NULL; |
1da177e4 LT |
1124 | dmxdev->demux->close(dmxdev->demux); |
1125 | } | |
f705e6e4 | 1126 | |
1da177e4 | 1127 | EXPORT_SYMBOL(dvb_dmxdev_release); |