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