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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * dmxdev.c - DVB demultiplexer device | |
3 | * | |
f705e6e4 AO |
4 | * Copyright (C) 2000 Ralph Metzler & Marcus Metzler |
5 | * for convergence integrated media GmbH | |
1da177e4 LT |
6 | * |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public License | |
9 | * as published by the Free Software Foundation; either version 2.1 | |
10 | * of the License, or (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20 | * | |
21 | */ | |
22 | ||
23 | #include <linux/spinlock.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/vmalloc.h> | |
26 | #include <linux/module.h> | |
1da177e4 LT |
27 | #include <linux/poll.h> |
28 | #include <linux/ioctl.h> | |
29 | #include <linux/wait.h> | |
30 | #include <asm/uaccess.h> | |
31 | #include <asm/system.h> | |
1da177e4 LT |
32 | #include "dmxdev.h" |
33 | ||
34 | static int debug; | |
35 | ||
36 | module_param(debug, int, 0644); | |
37 | MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); | |
38 | ||
39 | #define dprintk if (debug) printk | |
40 | ||
34731df2 AO |
41 | static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf, |
42 | const u8 *src, size_t len) | |
1da177e4 | 43 | { |
34731df2 | 44 | ssize_t free; |
1da177e4 LT |
45 | |
46 | if (!len) | |
47 | return 0; | |
48 | if (!buf->data) | |
49 | return 0; | |
50 | ||
34731df2 AO |
51 | free = dvb_ringbuffer_free(buf); |
52 | if (len > free) { | |
1da177e4 | 53 | dprintk("dmxdev: buffer overflow\n"); |
34731df2 | 54 | return -EOVERFLOW; |
1da177e4 | 55 | } |
34731df2 AO |
56 | |
57 | return dvb_ringbuffer_write(buf, src, len); | |
1da177e4 LT |
58 | } |
59 | ||
34731df2 | 60 | static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src, |
f705e6e4 AO |
61 | int non_blocking, char __user *buf, |
62 | size_t count, loff_t *ppos) | |
1da177e4 | 63 | { |
34731df2 AO |
64 | size_t todo; |
65 | ssize_t avail; | |
66 | ssize_t ret = 0; | |
1da177e4 LT |
67 | |
68 | if (!src->data) | |
69 | return 0; | |
70 | ||
34731df2 AO |
71 | if (src->error) { |
72 | ret = src->error; | |
73 | dvb_ringbuffer_flush(src); | |
74 | return ret; | |
1da177e4 LT |
75 | } |
76 | ||
34731df2 AO |
77 | for (todo = count; todo > 0; todo -= ret) { |
78 | if (non_blocking && dvb_ringbuffer_empty(src)) { | |
79 | ret = -EWOULDBLOCK; | |
80 | break; | |
81 | } | |
1da177e4 | 82 | |
34731df2 AO |
83 | ret = wait_event_interruptible(src->queue, |
84 | !dvb_ringbuffer_empty(src) || | |
85 | (src->error != 0)); | |
86 | if (ret < 0) | |
87 | break; | |
1da177e4 | 88 | |
34731df2 AO |
89 | if (src->error) { |
90 | ret = src->error; | |
91 | dvb_ringbuffer_flush(src); | |
92 | break; | |
1da177e4 LT |
93 | } |
94 | ||
34731df2 | 95 | avail = dvb_ringbuffer_avail(src); |
f705e6e4 AO |
96 | if (avail > todo) |
97 | avail = todo; | |
34731df2 | 98 | |
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--; | |
208 | if(dvbdev->users==-1 && dmxdev->exit==1) { | |
209 | fops_put(file->f_op); | |
210 | file->f_op = NULL; | |
211 | mutex_unlock(&dmxdev->mutex); | |
212 | wake_up(&dvbdev->wait_queue); | |
213 | } else | |
214 | mutex_unlock(&dmxdev->mutex); | |
215 | ||
1da177e4 LT |
216 | return 0; |
217 | } | |
218 | ||
219 | static ssize_t dvb_dvr_write(struct file *file, const char __user *buf, | |
f705e6e4 | 220 | size_t count, loff_t *ppos) |
1da177e4 | 221 | { |
0c53c70f JS |
222 | struct dvb_device *dvbdev = file->private_data; |
223 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
224 | int ret; |
225 | ||
226 | if (!dmxdev->demux->write) | |
227 | return -EOPNOTSUPP; | |
f705e6e4 | 228 | if ((file->f_flags & O_ACCMODE) != O_WRONLY) |
1da177e4 | 229 | return -EINVAL; |
3593cab5 | 230 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 | 231 | return -ERESTARTSYS; |
57861b43 MR |
232 | |
233 | if (dmxdev->exit) { | |
234 | mutex_unlock(&dmxdev->mutex); | |
235 | return -ENODEV; | |
236 | } | |
f705e6e4 | 237 | ret = dmxdev->demux->write(dmxdev->demux, buf, count); |
3593cab5 | 238 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
239 | return ret; |
240 | } | |
241 | ||
242 | static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count, | |
f705e6e4 | 243 | loff_t *ppos) |
1da177e4 | 244 | { |
0c53c70f JS |
245 | struct dvb_device *dvbdev = file->private_data; |
246 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
247 | int ret; |
248 | ||
57861b43 MR |
249 | if (dmxdev->exit) { |
250 | mutex_unlock(&dmxdev->mutex); | |
251 | return -ENODEV; | |
252 | } | |
253 | ||
3593cab5 | 254 | //mutex_lock(&dmxdev->mutex); |
f705e6e4 AO |
255 | ret = dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer, |
256 | file->f_flags & O_NONBLOCK, | |
257 | buf, count, ppos); | |
3593cab5 | 258 | //mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
259 | return ret; |
260 | } | |
261 | ||
a095be4b AO |
262 | static int dvb_dvr_set_buffer_size(struct dmxdev *dmxdev, |
263 | unsigned long size) | |
264 | { | |
265 | struct dvb_ringbuffer *buf = &dmxdev->dvr_buffer; | |
266 | void *newmem; | |
267 | void *oldmem; | |
268 | ||
269 | dprintk("function : %s\n", __func__); | |
270 | ||
271 | if (buf->size == size) | |
272 | return 0; | |
273 | if (!size) | |
274 | return -EINVAL; | |
275 | ||
276 | newmem = vmalloc(size); | |
277 | if (!newmem) | |
278 | return -ENOMEM; | |
279 | ||
280 | oldmem = buf->data; | |
281 | ||
282 | spin_lock_irq(&dmxdev->lock); | |
283 | buf->data = newmem; | |
284 | buf->size = size; | |
285 | ||
286 | /* reset and not flush in case the buffer shrinks */ | |
287 | dvb_ringbuffer_reset(buf); | |
288 | spin_unlock_irq(&dmxdev->lock); | |
289 | ||
290 | vfree(oldmem); | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
f705e6e4 AO |
295 | static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter |
296 | *dmxdevfilter, int state) | |
1da177e4 LT |
297 | { |
298 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 299 | dmxdevfilter->state = state; |
1da177e4 LT |
300 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
301 | } | |
302 | ||
f705e6e4 AO |
303 | static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, |
304 | unsigned long size) | |
1da177e4 | 305 | { |
34731df2 | 306 | struct dvb_ringbuffer *buf = &dmxdevfilter->buffer; |
a095be4b AO |
307 | void *newmem; |
308 | void *oldmem; | |
1da177e4 | 309 | |
f705e6e4 | 310 | if (buf->size == size) |
1da177e4 | 311 | return 0; |
a095be4b AO |
312 | if (!size) |
313 | return -EINVAL; | |
f705e6e4 | 314 | if (dmxdevfilter->state >= DMXDEV_STATE_GO) |
1da177e4 | 315 | return -EBUSY; |
a095be4b AO |
316 | |
317 | newmem = vmalloc(size); | |
318 | if (!newmem) | |
319 | return -ENOMEM; | |
320 | ||
321 | oldmem = buf->data; | |
322 | ||
1da177e4 | 323 | spin_lock_irq(&dmxdevfilter->dev->lock); |
a095be4b | 324 | buf->data = newmem; |
f705e6e4 | 325 | buf->size = size; |
48c01a9c AO |
326 | |
327 | /* reset and not flush in case the buffer shrinks */ | |
328 | dvb_ringbuffer_reset(buf); | |
1da177e4 | 329 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
1da177e4 | 330 | |
a095be4b AO |
331 | vfree(oldmem); |
332 | ||
1da177e4 LT |
333 | return 0; |
334 | } | |
335 | ||
336 | static void dvb_dmxdev_filter_timeout(unsigned long data) | |
337 | { | |
f705e6e4 | 338 | struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data; |
1da177e4 | 339 | |
f705e6e4 | 340 | dmxdevfilter->buffer.error = -ETIMEDOUT; |
1da177e4 | 341 | spin_lock_irq(&dmxdevfilter->dev->lock); |
f705e6e4 | 342 | dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT; |
1da177e4 LT |
343 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
344 | wake_up(&dmxdevfilter->buffer.queue); | |
345 | } | |
346 | ||
347 | static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter) | |
348 | { | |
f705e6e4 | 349 | struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec; |
1da177e4 LT |
350 | |
351 | del_timer(&dmxdevfilter->timer); | |
352 | if (para->timeout) { | |
f705e6e4 AO |
353 | dmxdevfilter->timer.function = dvb_dmxdev_filter_timeout; |
354 | dmxdevfilter->timer.data = (unsigned long)dmxdevfilter; | |
355 | dmxdevfilter->timer.expires = | |
356 | jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000; | |
1da177e4 LT |
357 | add_timer(&dmxdevfilter->timer); |
358 | } | |
359 | } | |
360 | ||
361 | static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
362 | const u8 *buffer2, size_t buffer2_len, |
363 | struct dmx_section_filter *filter, | |
364 | enum dmx_success success) | |
1da177e4 | 365 | { |
0c53c70f | 366 | struct dmxdev_filter *dmxdevfilter = filter->priv; |
1da177e4 LT |
367 | int ret; |
368 | ||
369 | if (dmxdevfilter->buffer.error) { | |
370 | wake_up(&dmxdevfilter->buffer.queue); | |
371 | return 0; | |
372 | } | |
28100165 | 373 | spin_lock(&dmxdevfilter->dev->lock); |
f705e6e4 | 374 | if (dmxdevfilter->state != DMXDEV_STATE_GO) { |
28100165 | 375 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
376 | return 0; |
377 | } | |
378 | del_timer(&dmxdevfilter->timer); | |
379 | dprintk("dmxdev: section callback %02x %02x %02x %02x %02x %02x\n", | |
380 | buffer1[0], buffer1[1], | |
f705e6e4 AO |
381 | buffer1[2], buffer1[3], buffer1[4], buffer1[5]); |
382 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1, | |
383 | buffer1_len); | |
384 | if (ret == buffer1_len) { | |
385 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2, | |
386 | buffer2_len); | |
1da177e4 | 387 | } |
f705e6e4 | 388 | if (ret < 0) { |
34731df2 AO |
389 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); |
390 | dmxdevfilter->buffer.error = ret; | |
1da177e4 | 391 | } |
f705e6e4 AO |
392 | if (dmxdevfilter->params.sec.flags & DMX_ONESHOT) |
393 | dmxdevfilter->state = DMXDEV_STATE_DONE; | |
28100165 | 394 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
395 | wake_up(&dmxdevfilter->buffer.queue); |
396 | return 0; | |
397 | } | |
398 | ||
399 | static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
400 | const u8 *buffer2, size_t buffer2_len, |
401 | struct dmx_ts_feed *feed, | |
402 | enum dmx_success success) | |
1da177e4 | 403 | { |
0c53c70f | 404 | struct dmxdev_filter *dmxdevfilter = feed->priv; |
34731df2 | 405 | struct dvb_ringbuffer *buffer; |
1da177e4 LT |
406 | int ret; |
407 | ||
28100165 | 408 | spin_lock(&dmxdevfilter->dev->lock); |
f705e6e4 | 409 | if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) { |
28100165 | 410 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
411 | return 0; |
412 | } | |
413 | ||
b01cd937 PH |
414 | if (dmxdevfilter->params.pes.output == DMX_OUT_TAP |
415 | || dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP) | |
f705e6e4 | 416 | buffer = &dmxdevfilter->buffer; |
1da177e4 | 417 | else |
f705e6e4 | 418 | buffer = &dmxdevfilter->dev->dvr_buffer; |
1da177e4 | 419 | if (buffer->error) { |
28100165 | 420 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
421 | wake_up(&buffer->queue); |
422 | return 0; | |
423 | } | |
f705e6e4 AO |
424 | ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len); |
425 | if (ret == buffer1_len) | |
426 | ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len); | |
427 | if (ret < 0) { | |
34731df2 AO |
428 | dvb_ringbuffer_flush(buffer); |
429 | buffer->error = ret; | |
1da177e4 | 430 | } |
28100165 | 431 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
432 | wake_up(&buffer->queue); |
433 | return 0; | |
434 | } | |
435 | ||
1da177e4 | 436 | /* stop feed but only mark the specified filter as stopped (state set) */ |
1da177e4 LT |
437 | static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter) |
438 | { | |
439 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
440 | ||
441 | switch (dmxdevfilter->type) { | |
442 | case DMXDEV_TYPE_SEC: | |
443 | del_timer(&dmxdevfilter->timer); | |
444 | dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec); | |
445 | break; | |
446 | case DMXDEV_TYPE_PES: | |
447 | dmxdevfilter->feed.ts->stop_filtering(dmxdevfilter->feed.ts); | |
448 | break; | |
449 | default: | |
450 | return -EINVAL; | |
451 | } | |
452 | return 0; | |
453 | } | |
454 | ||
1da177e4 | 455 | /* start feed associated with the specified filter */ |
1da177e4 LT |
456 | static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter) |
457 | { | |
f705e6e4 | 458 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); |
1da177e4 LT |
459 | |
460 | switch (filter->type) { | |
461 | case DMXDEV_TYPE_SEC: | |
462 | return filter->feed.sec->start_filtering(filter->feed.sec); | |
1da177e4 LT |
463 | case DMXDEV_TYPE_PES: |
464 | return filter->feed.ts->start_filtering(filter->feed.ts); | |
1da177e4 LT |
465 | default: |
466 | return -EINVAL; | |
467 | } | |
468 | ||
469 | return 0; | |
470 | } | |
471 | ||
1da177e4 LT |
472 | /* restart section feed if it has filters left associated with it, |
473 | otherwise release the feed */ | |
1da177e4 LT |
474 | static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter) |
475 | { | |
476 | int i; | |
477 | struct dmxdev *dmxdev = filter->dev; | |
478 | u16 pid = filter->params.sec.pid; | |
479 | ||
f705e6e4 AO |
480 | for (i = 0; i < dmxdev->filternum; i++) |
481 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && | |
482 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && | |
483 | dmxdev->filter[i].params.sec.pid == pid) { | |
1da177e4 LT |
484 | dvb_dmxdev_feed_start(&dmxdev->filter[i]); |
485 | return 0; | |
486 | } | |
487 | ||
f705e6e4 AO |
488 | filter->dev->demux->release_section_feed(dmxdev->demux, |
489 | filter->feed.sec); | |
1da177e4 LT |
490 | |
491 | return 0; | |
492 | } | |
493 | ||
494 | static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter) | |
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: | |
512 | if (!dmxdevfilter->feed.ts) | |
513 | break; | |
514 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
515 | dmxdevfilter->dev->demux-> | |
f705e6e4 AO |
516 | release_ts_feed(dmxdevfilter->dev->demux, |
517 | dmxdevfilter->feed.ts); | |
518 | dmxdevfilter->feed.ts = NULL; | |
1da177e4 LT |
519 | break; |
520 | default: | |
f705e6e4 | 521 | if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED) |
1da177e4 LT |
522 | return 0; |
523 | return -EINVAL; | |
524 | } | |
34731df2 AO |
525 | |
526 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); | |
1da177e4 LT |
527 | return 0; |
528 | } | |
529 | ||
530 | static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter) | |
531 | { | |
f705e6e4 | 532 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
533 | return 0; |
534 | ||
f705e6e4 | 535 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 LT |
536 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
537 | return 0; | |
538 | } | |
539 | ||
540 | static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) | |
541 | { | |
542 | struct dmxdev *dmxdev = filter->dev; | |
543 | void *mem; | |
544 | int ret, i; | |
545 | ||
546 | if (filter->state < DMXDEV_STATE_SET) | |
547 | return -EINVAL; | |
548 | ||
549 | if (filter->state >= DMXDEV_STATE_GO) | |
550 | dvb_dmxdev_filter_stop(filter); | |
551 | ||
34731df2 | 552 | if (!filter->buffer.data) { |
1da177e4 | 553 | mem = vmalloc(filter->buffer.size); |
34731df2 AO |
554 | if (!mem) |
555 | return -ENOMEM; | |
1da177e4 | 556 | spin_lock_irq(&filter->dev->lock); |
f705e6e4 | 557 | filter->buffer.data = mem; |
1da177e4 | 558 | spin_unlock_irq(&filter->dev->lock); |
1da177e4 LT |
559 | } |
560 | ||
34731df2 | 561 | dvb_ringbuffer_flush(&filter->buffer); |
1da177e4 LT |
562 | |
563 | switch (filter->type) { | |
564 | case DMXDEV_TYPE_SEC: | |
565 | { | |
f705e6e4 AO |
566 | struct dmx_sct_filter_params *para = &filter->params.sec; |
567 | struct dmx_section_filter **secfilter = &filter->filter.sec; | |
568 | struct dmx_section_feed **secfeed = &filter->feed.sec; | |
569 | ||
570 | *secfilter = NULL; | |
571 | *secfeed = NULL; | |
1da177e4 | 572 | |
1da177e4 LT |
573 | |
574 | /* find active filter/feed with same PID */ | |
f705e6e4 | 575 | for (i = 0; i < dmxdev->filternum; i++) { |
1da177e4 | 576 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && |
09794a6f AO |
577 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && |
578 | dmxdev->filter[i].params.sec.pid == para->pid) { | |
1da177e4 LT |
579 | *secfeed = dmxdev->filter[i].feed.sec; |
580 | break; | |
581 | } | |
582 | } | |
583 | ||
584 | /* if no feed found, try to allocate new one */ | |
585 | if (!*secfeed) { | |
f705e6e4 AO |
586 | ret = dmxdev->demux->allocate_section_feed(dmxdev->demux, |
587 | secfeed, | |
588 | dvb_dmxdev_section_callback); | |
589 | if (ret < 0) { | |
590 | printk("DVB (%s): could not alloc feed\n", | |
46b4f7c1 | 591 | __func__); |
1da177e4 LT |
592 | return ret; |
593 | } | |
594 | ||
f705e6e4 AO |
595 | ret = (*secfeed)->set(*secfeed, para->pid, 32768, |
596 | (para->flags & DMX_CHECK_CRC) ? 1 : 0); | |
597 | if (ret < 0) { | |
598 | printk("DVB (%s): could not set feed\n", | |
46b4f7c1 | 599 | __func__); |
1da177e4 LT |
600 | dvb_dmxdev_feed_restart(filter); |
601 | return ret; | |
602 | } | |
603 | } else { | |
604 | dvb_dmxdev_feed_stop(filter); | |
605 | } | |
606 | ||
f705e6e4 | 607 | ret = (*secfeed)->allocate_filter(*secfeed, secfilter); |
1da177e4 LT |
608 | if (ret < 0) { |
609 | dvb_dmxdev_feed_restart(filter); | |
610 | filter->feed.sec->start_filtering(*secfeed); | |
f705e6e4 | 611 | dprintk("could not get filter\n"); |
1da177e4 LT |
612 | return ret; |
613 | } | |
614 | ||
615 | (*secfilter)->priv = filter; | |
616 | ||
617 | memcpy(&((*secfilter)->filter_value[3]), | |
f705e6e4 | 618 | &(para->filter.filter[1]), DMX_FILTER_SIZE - 1); |
1da177e4 | 619 | memcpy(&(*secfilter)->filter_mask[3], |
f705e6e4 | 620 | ¶->filter.mask[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 621 | memcpy(&(*secfilter)->filter_mode[3], |
f705e6e4 | 622 | ¶->filter.mode[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 623 | |
f705e6e4 AO |
624 | (*secfilter)->filter_value[0] = para->filter.filter[0]; |
625 | (*secfilter)->filter_mask[0] = para->filter.mask[0]; | |
626 | (*secfilter)->filter_mode[0] = para->filter.mode[0]; | |
627 | (*secfilter)->filter_mask[1] = 0; | |
628 | (*secfilter)->filter_mask[2] = 0; | |
1da177e4 LT |
629 | |
630 | filter->todo = 0; | |
631 | ||
f705e6e4 | 632 | ret = filter->feed.sec->start_filtering(filter->feed.sec); |
1da177e4 LT |
633 | if (ret < 0) |
634 | return ret; | |
635 | ||
636 | dvb_dmxdev_filter_timer(filter); | |
637 | break; | |
638 | } | |
1da177e4 LT |
639 | case DMXDEV_TYPE_PES: |
640 | { | |
641 | struct timespec timeout = { 0 }; | |
642 | struct dmx_pes_filter_params *para = &filter->params.pes; | |
643 | dmx_output_t otype; | |
1da177e4 LT |
644 | int ts_type; |
645 | enum dmx_ts_pes ts_pes; | |
646 | struct dmx_ts_feed **tsfeed = &filter->feed.ts; | |
647 | ||
648 | filter->feed.ts = NULL; | |
f705e6e4 | 649 | otype = para->output; |
1da177e4 | 650 | |
f705e6e4 | 651 | ts_pes = (enum dmx_ts_pes)para->pes_type; |
1da177e4 | 652 | |
f705e6e4 AO |
653 | if (ts_pes < DMX_PES_OTHER) |
654 | ts_type = TS_DECODER; | |
1da177e4 | 655 | else |
f705e6e4 | 656 | ts_type = 0; |
1da177e4 | 657 | |
4a24ce3a | 658 | if (otype == DMX_OUT_TS_TAP) |
1da177e4 | 659 | ts_type |= TS_PACKET; |
4a24ce3a AO |
660 | else if (otype == DMX_OUT_TSDEMUX_TAP) |
661 | ts_type |= TS_PACKET | TS_DEMUX; | |
662 | else if (otype == DMX_OUT_TAP) | |
663 | ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY; | |
1da177e4 | 664 | |
f705e6e4 AO |
665 | ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, |
666 | tsfeed, | |
667 | dvb_dmxdev_ts_callback); | |
668 | if (ret < 0) | |
1da177e4 LT |
669 | return ret; |
670 | ||
f705e6e4 | 671 | (*tsfeed)->priv = filter; |
1da177e4 LT |
672 | |
673 | ret = (*tsfeed)->set(*tsfeed, para->pid, ts_type, ts_pes, | |
5d2cd163 | 674 | 32768, timeout); |
1da177e4 | 675 | if (ret < 0) { |
f705e6e4 AO |
676 | dmxdev->demux->release_ts_feed(dmxdev->demux, |
677 | *tsfeed); | |
1da177e4 LT |
678 | return ret; |
679 | } | |
680 | ||
681 | ret = filter->feed.ts->start_filtering(filter->feed.ts); | |
76197924 | 682 | if (ret < 0) { |
f705e6e4 AO |
683 | dmxdev->demux->release_ts_feed(dmxdev->demux, |
684 | *tsfeed); | |
1da177e4 | 685 | return ret; |
76197924 | 686 | } |
1da177e4 LT |
687 | |
688 | break; | |
689 | } | |
690 | default: | |
691 | return -EINVAL; | |
692 | } | |
693 | ||
694 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); | |
695 | return 0; | |
696 | } | |
697 | ||
698 | static int dvb_demux_open(struct inode *inode, struct file *file) | |
699 | { | |
0c53c70f JS |
700 | struct dvb_device *dvbdev = file->private_data; |
701 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
702 | int i; |
703 | struct dmxdev_filter *dmxdevfilter; | |
704 | ||
705 | if (!dmxdev->filter) | |
706 | return -EINVAL; | |
707 | ||
3593cab5 | 708 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
709 | return -ERESTARTSYS; |
710 | ||
f705e6e4 AO |
711 | for (i = 0; i < dmxdev->filternum; i++) |
712 | if (dmxdev->filter[i].state == DMXDEV_STATE_FREE) | |
1da177e4 LT |
713 | break; |
714 | ||
f705e6e4 | 715 | if (i == dmxdev->filternum) { |
3593cab5 | 716 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
717 | return -EMFILE; |
718 | } | |
719 | ||
f705e6e4 | 720 | dmxdevfilter = &dmxdev->filter[i]; |
3593cab5 | 721 | mutex_init(&dmxdevfilter->mutex); |
f705e6e4 | 722 | file->private_data = dmxdevfilter; |
1da177e4 | 723 | |
34731df2 | 724 | dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192); |
f705e6e4 | 725 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 | 726 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
f705e6e4 | 727 | dmxdevfilter->feed.ts = NULL; |
1da177e4 LT |
728 | init_timer(&dmxdevfilter->timer); |
729 | ||
57861b43 MR |
730 | dvbdev->users++; |
731 | ||
3593cab5 | 732 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
733 | return 0; |
734 | } | |
735 | ||
f705e6e4 AO |
736 | static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, |
737 | struct dmxdev_filter *dmxdevfilter) | |
1da177e4 | 738 | { |
c2788502 SA |
739 | mutex_lock(&dmxdev->mutex); |
740 | mutex_lock(&dmxdevfilter->mutex); | |
1da177e4 LT |
741 | |
742 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
743 | dvb_dmxdev_filter_reset(dmxdevfilter); | |
744 | ||
745 | if (dmxdevfilter->buffer.data) { | |
f705e6e4 | 746 | void *mem = dmxdevfilter->buffer.data; |
1da177e4 LT |
747 | |
748 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 749 | dmxdevfilter->buffer.data = NULL; |
1da177e4 LT |
750 | spin_unlock_irq(&dmxdev->lock); |
751 | vfree(mem); | |
752 | } | |
753 | ||
754 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE); | |
755 | wake_up(&dmxdevfilter->buffer.queue); | |
3593cab5 IM |
756 | mutex_unlock(&dmxdevfilter->mutex); |
757 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
758 | return 0; |
759 | } | |
760 | ||
761 | static inline void invert_mode(dmx_filter_t *filter) | |
762 | { | |
763 | int i; | |
764 | ||
f705e6e4 AO |
765 | for (i = 0; i < DMX_FILTER_SIZE; i++) |
766 | filter->mode[i] ^= 0xff; | |
1da177e4 LT |
767 | } |
768 | ||
1da177e4 | 769 | static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev, |
f705e6e4 AO |
770 | struct dmxdev_filter *dmxdevfilter, |
771 | struct dmx_sct_filter_params *params) | |
1da177e4 | 772 | { |
46b4f7c1 | 773 | dprintk("function : %s\n", __func__); |
1da177e4 LT |
774 | |
775 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
776 | ||
f705e6e4 | 777 | dmxdevfilter->type = DMXDEV_TYPE_SEC; |
1da177e4 LT |
778 | memcpy(&dmxdevfilter->params.sec, |
779 | params, sizeof(struct dmx_sct_filter_params)); | |
780 | invert_mode(&dmxdevfilter->params.sec.filter); | |
781 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
782 | ||
f705e6e4 | 783 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
784 | return dvb_dmxdev_filter_start(dmxdevfilter); |
785 | ||
786 | return 0; | |
787 | } | |
788 | ||
789 | static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev, | |
f705e6e4 AO |
790 | struct dmxdev_filter *dmxdevfilter, |
791 | struct dmx_pes_filter_params *params) | |
1da177e4 LT |
792 | { |
793 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
794 | ||
f705e6e4 | 795 | if (params->pes_type > DMX_PES_OTHER || params->pes_type < 0) |
1da177e4 LT |
796 | return -EINVAL; |
797 | ||
f705e6e4 AO |
798 | dmxdevfilter->type = DMXDEV_TYPE_PES; |
799 | memcpy(&dmxdevfilter->params, params, | |
800 | sizeof(struct dmx_pes_filter_params)); | |
1da177e4 LT |
801 | |
802 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
803 | ||
f705e6e4 | 804 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
805 | return dvb_dmxdev_filter_start(dmxdevfilter); |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
810 | static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil, | |
f705e6e4 AO |
811 | struct file *file, char __user *buf, |
812 | size_t count, loff_t *ppos) | |
1da177e4 LT |
813 | { |
814 | int result, hcount; | |
f705e6e4 AO |
815 | int done = 0; |
816 | ||
817 | if (dfil->todo <= 0) { | |
818 | hcount = 3 + dfil->todo; | |
819 | if (hcount > count) | |
820 | hcount = count; | |
821 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
822 | file->f_flags & O_NONBLOCK, | |
823 | buf, hcount, ppos); | |
824 | if (result < 0) { | |
825 | dfil->todo = 0; | |
1da177e4 LT |
826 | return result; |
827 | } | |
f705e6e4 | 828 | if (copy_from_user(dfil->secheader - dfil->todo, buf, result)) |
1da177e4 | 829 | return -EFAULT; |
f705e6e4 AO |
830 | buf += result; |
831 | done = result; | |
832 | count -= result; | |
833 | dfil->todo -= result; | |
834 | if (dfil->todo > -3) | |
1da177e4 | 835 | return done; |
f705e6e4 | 836 | dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff; |
1da177e4 LT |
837 | if (!count) |
838 | return done; | |
839 | } | |
f705e6e4 AO |
840 | if (count > dfil->todo) |
841 | count = dfil->todo; | |
842 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
843 | file->f_flags & O_NONBLOCK, | |
844 | buf, count, ppos); | |
845 | if (result < 0) | |
1da177e4 | 846 | return result; |
f705e6e4 AO |
847 | dfil->todo -= result; |
848 | return (result + done); | |
1da177e4 LT |
849 | } |
850 | ||
1da177e4 | 851 | static ssize_t |
f705e6e4 AO |
852 | dvb_demux_read(struct file *file, char __user *buf, size_t count, |
853 | loff_t *ppos) | |
1da177e4 | 854 | { |
f705e6e4 AO |
855 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
856 | int ret; | |
1da177e4 | 857 | |
3593cab5 | 858 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) |
1da177e4 LT |
859 | return -ERESTARTSYS; |
860 | ||
f705e6e4 AO |
861 | if (dmxdevfilter->type == DMXDEV_TYPE_SEC) |
862 | ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos); | |
1da177e4 | 863 | else |
f705e6e4 AO |
864 | ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer, |
865 | file->f_flags & O_NONBLOCK, | |
866 | buf, count, ppos); | |
1da177e4 | 867 | |
3593cab5 | 868 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
869 | return ret; |
870 | } | |
871 | ||
1da177e4 LT |
872 | static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, |
873 | unsigned int cmd, void *parg) | |
874 | { | |
3ec4a307 | 875 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
f705e6e4 AO |
876 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
877 | unsigned long arg = (unsigned long)parg; | |
878 | int ret = 0; | |
1da177e4 | 879 | |
3593cab5 | 880 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
881 | return -ERESTARTSYS; |
882 | ||
883 | switch (cmd) { | |
884 | case DMX_START: | |
3593cab5 IM |
885 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
886 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
887 | return -ERESTARTSYS; |
888 | } | |
f705e6e4 | 889 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
890 | ret = -EINVAL; |
891 | else | |
892 | ret = dvb_dmxdev_filter_start(dmxdevfilter); | |
3593cab5 | 893 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
894 | break; |
895 | ||
896 | case DMX_STOP: | |
3593cab5 IM |
897 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
898 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
899 | return -ERESTARTSYS; |
900 | } | |
f705e6e4 | 901 | ret = dvb_dmxdev_filter_stop(dmxdevfilter); |
3593cab5 | 902 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
903 | break; |
904 | ||
905 | case DMX_SET_FILTER: | |
3593cab5 IM |
906 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
907 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
908 | return -ERESTARTSYS; |
909 | } | |
f705e6e4 | 910 | ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 911 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
912 | break; |
913 | ||
914 | case DMX_SET_PES_FILTER: | |
3593cab5 IM |
915 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
916 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
917 | return -ERESTARTSYS; |
918 | } | |
f705e6e4 | 919 | ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 920 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
921 | break; |
922 | ||
923 | case DMX_SET_BUFFER_SIZE: | |
3593cab5 IM |
924 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
925 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
926 | return -ERESTARTSYS; |
927 | } | |
f705e6e4 | 928 | ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg); |
3593cab5 | 929 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
930 | break; |
931 | ||
1da177e4 LT |
932 | case DMX_GET_PES_PIDS: |
933 | if (!dmxdev->demux->get_pes_pids) { | |
f705e6e4 | 934 | ret = -EINVAL; |
1da177e4 LT |
935 | break; |
936 | } | |
f705e6e4 | 937 | dmxdev->demux->get_pes_pids(dmxdev->demux, parg); |
1da177e4 LT |
938 | break; |
939 | ||
c0510052 AO |
940 | case DMX_GET_CAPS: |
941 | if (!dmxdev->demux->get_caps) { | |
942 | ret = -EINVAL; | |
943 | break; | |
944 | } | |
945 | ret = dmxdev->demux->get_caps(dmxdev->demux, parg); | |
946 | break; | |
947 | ||
948 | case DMX_SET_SOURCE: | |
949 | if (!dmxdev->demux->set_source) { | |
950 | ret = -EINVAL; | |
951 | break; | |
952 | } | |
953 | ret = dmxdev->demux->set_source(dmxdev->demux, parg); | |
954 | break; | |
955 | ||
1da177e4 LT |
956 | case DMX_GET_STC: |
957 | if (!dmxdev->demux->get_stc) { | |
f705e6e4 | 958 | ret = -EINVAL; |
1da177e4 LT |
959 | break; |
960 | } | |
961 | ret = dmxdev->demux->get_stc(dmxdev->demux, | |
f705e6e4 AO |
962 | ((struct dmx_stc *)parg)->num, |
963 | &((struct dmx_stc *)parg)->stc, | |
964 | &((struct dmx_stc *)parg)->base); | |
1da177e4 LT |
965 | break; |
966 | ||
967 | default: | |
f705e6e4 AO |
968 | ret = -EINVAL; |
969 | break; | |
1da177e4 | 970 | } |
3593cab5 | 971 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
972 | return ret; |
973 | } | |
974 | ||
975 | static int dvb_demux_ioctl(struct inode *inode, struct file *file, | |
976 | unsigned int cmd, unsigned long arg) | |
977 | { | |
978 | return dvb_usercopy(inode, file, cmd, arg, dvb_demux_do_ioctl); | |
979 | } | |
980 | ||
f705e6e4 | 981 | static unsigned int dvb_demux_poll(struct file *file, poll_table *wait) |
1da177e4 | 982 | { |
3ec4a307 | 983 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
984 | unsigned int mask = 0; |
985 | ||
986 | if (!dmxdevfilter) | |
987 | return -EINVAL; | |
988 | ||
989 | poll_wait(file, &dmxdevfilter->buffer.queue, wait); | |
990 | ||
991 | if (dmxdevfilter->state != DMXDEV_STATE_GO && | |
992 | dmxdevfilter->state != DMXDEV_STATE_DONE && | |
993 | dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT) | |
994 | return 0; | |
995 | ||
996 | if (dmxdevfilter->buffer.error) | |
997 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
998 | ||
34731df2 | 999 | if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer)) |
1da177e4 LT |
1000 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
1001 | ||
1002 | return mask; | |
1003 | } | |
1004 | ||
1da177e4 LT |
1005 | static int dvb_demux_release(struct inode *inode, struct file *file) |
1006 | { | |
3ec4a307 | 1007 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
1008 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
1009 | ||
57861b43 MR |
1010 | int ret; |
1011 | ||
1012 | ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter); | |
1013 | ||
1014 | mutex_lock(&dmxdev->mutex); | |
1015 | dmxdev->dvbdev->users--; | |
1016 | if(dmxdev->dvbdev->users==1 && dmxdev->exit==1) { | |
1017 | fops_put(file->f_op); | |
1018 | file->f_op = NULL; | |
1019 | mutex_unlock(&dmxdev->mutex); | |
1020 | wake_up(&dmxdev->dvbdev->wait_queue); | |
1021 | } else | |
1022 | mutex_unlock(&dmxdev->mutex); | |
1023 | ||
1024 | return ret; | |
1da177e4 LT |
1025 | } |
1026 | ||
1da177e4 | 1027 | static struct file_operations dvb_demux_fops = { |
f705e6e4 AO |
1028 | .owner = THIS_MODULE, |
1029 | .read = dvb_demux_read, | |
1030 | .ioctl = dvb_demux_ioctl, | |
1031 | .open = dvb_demux_open, | |
1032 | .release = dvb_demux_release, | |
1033 | .poll = dvb_demux_poll, | |
1da177e4 LT |
1034 | }; |
1035 | ||
1da177e4 | 1036 | static struct dvb_device dvbdev_demux = { |
f705e6e4 AO |
1037 | .priv = NULL, |
1038 | .users = 1, | |
1039 | .writers = 1, | |
1040 | .fops = &dvb_demux_fops | |
1da177e4 LT |
1041 | }; |
1042 | ||
1da177e4 | 1043 | static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file, |
f705e6e4 | 1044 | unsigned int cmd, void *parg) |
1da177e4 | 1045 | { |
0c53c70f JS |
1046 | struct dvb_device *dvbdev = file->private_data; |
1047 | struct dmxdev *dmxdev = dvbdev->priv; | |
a095be4b | 1048 | unsigned long arg = (unsigned long)parg; |
f705e6e4 | 1049 | int ret; |
1da177e4 | 1050 | |
3593cab5 | 1051 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
1052 | return -ERESTARTSYS; |
1053 | ||
1054 | switch (cmd) { | |
1055 | case DMX_SET_BUFFER_SIZE: | |
a095be4b | 1056 | ret = dvb_dvr_set_buffer_size(dmxdev, arg); |
1da177e4 LT |
1057 | break; |
1058 | ||
1059 | default: | |
f705e6e4 AO |
1060 | ret = -EINVAL; |
1061 | break; | |
1da177e4 | 1062 | } |
3593cab5 | 1063 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
1064 | return ret; |
1065 | } | |
1066 | ||
1da177e4 | 1067 | static int dvb_dvr_ioctl(struct inode *inode, struct file *file, |
f705e6e4 | 1068 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
1069 | { |
1070 | return dvb_usercopy(inode, file, cmd, arg, dvb_dvr_do_ioctl); | |
1071 | } | |
1072 | ||
f705e6e4 | 1073 | static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait) |
1da177e4 | 1074 | { |
0c53c70f JS |
1075 | struct dvb_device *dvbdev = file->private_data; |
1076 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
1077 | unsigned int mask = 0; |
1078 | ||
46b4f7c1 | 1079 | dprintk("function : %s\n", __func__); |
1da177e4 LT |
1080 | |
1081 | poll_wait(file, &dmxdev->dvr_buffer.queue, wait); | |
1082 | ||
f705e6e4 | 1083 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
1da177e4 LT |
1084 | if (dmxdev->dvr_buffer.error) |
1085 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
1086 | ||
34731df2 | 1087 | if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer)) |
1da177e4 LT |
1088 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
1089 | } else | |
1090 | mask |= (POLLOUT | POLLWRNORM | POLLPRI); | |
1091 | ||
1092 | return mask; | |
1093 | } | |
1094 | ||
1da177e4 | 1095 | static struct file_operations dvb_dvr_fops = { |
f705e6e4 AO |
1096 | .owner = THIS_MODULE, |
1097 | .read = dvb_dvr_read, | |
1098 | .write = dvb_dvr_write, | |
1099 | .ioctl = dvb_dvr_ioctl, | |
1100 | .open = dvb_dvr_open, | |
1101 | .release = dvb_dvr_release, | |
1102 | .poll = dvb_dvr_poll, | |
1da177e4 LT |
1103 | }; |
1104 | ||
1105 | static struct dvb_device dvbdev_dvr = { | |
f705e6e4 | 1106 | .priv = NULL, |
5e85bd05 | 1107 | .readers = 1, |
57861b43 | 1108 | .users = 1, |
f705e6e4 | 1109 | .fops = &dvb_dvr_fops |
1da177e4 LT |
1110 | }; |
1111 | ||
f705e6e4 | 1112 | int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) |
1da177e4 LT |
1113 | { |
1114 | int i; | |
1115 | ||
1116 | if (dmxdev->demux->open(dmxdev->demux) < 0) | |
1117 | return -EUSERS; | |
1118 | ||
f705e6e4 | 1119 | dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter)); |
1da177e4 LT |
1120 | if (!dmxdev->filter) |
1121 | return -ENOMEM; | |
1122 | ||
3593cab5 | 1123 | mutex_init(&dmxdev->mutex); |
1da177e4 | 1124 | spin_lock_init(&dmxdev->lock); |
f705e6e4 AO |
1125 | for (i = 0; i < dmxdev->filternum; i++) { |
1126 | dmxdev->filter[i].dev = dmxdev; | |
1127 | dmxdev->filter[i].buffer.data = NULL; | |
1128 | dvb_dmxdev_filter_state_set(&dmxdev->filter[i], | |
1129 | DMXDEV_STATE_FREE); | |
1da177e4 LT |
1130 | } |
1131 | ||
f705e6e4 AO |
1132 | dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, |
1133 | DVB_DEVICE_DEMUX); | |
1134 | dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, | |
1135 | dmxdev, DVB_DEVICE_DVR); | |
1da177e4 | 1136 | |
34731df2 | 1137 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192); |
1da177e4 LT |
1138 | |
1139 | return 0; | |
1140 | } | |
f705e6e4 | 1141 | |
1da177e4 LT |
1142 | EXPORT_SYMBOL(dvb_dmxdev_init); |
1143 | ||
f705e6e4 | 1144 | void dvb_dmxdev_release(struct dmxdev *dmxdev) |
1da177e4 | 1145 | { |
57861b43 MR |
1146 | dmxdev->exit=1; |
1147 | if (dmxdev->dvbdev->users > 1) { | |
1148 | wait_event(dmxdev->dvbdev->wait_queue, | |
1149 | dmxdev->dvbdev->users==1); | |
1150 | } | |
1151 | if (dmxdev->dvr_dvbdev->users > 1) { | |
1152 | wait_event(dmxdev->dvr_dvbdev->wait_queue, | |
1153 | dmxdev->dvr_dvbdev->users==1); | |
1154 | } | |
1155 | ||
1da177e4 LT |
1156 | dvb_unregister_device(dmxdev->dvbdev); |
1157 | dvb_unregister_device(dmxdev->dvr_dvbdev); | |
1158 | ||
1159 | vfree(dmxdev->filter); | |
f705e6e4 | 1160 | dmxdev->filter = NULL; |
1da177e4 LT |
1161 | dmxdev->demux->close(dmxdev->demux); |
1162 | } | |
f705e6e4 | 1163 | |
1da177e4 | 1164 | EXPORT_SYMBOL(dvb_dmxdev_release); |