Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * dmxdev.c - DVB demultiplexer device | |
3 | * | |
f705e6e4 AO |
4 | * Copyright (C) 2000 Ralph Metzler & Marcus Metzler |
5 | * for convergence integrated media GmbH | |
1da177e4 LT |
6 | * |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public License | |
9 | * as published by the Free Software Foundation; either version 2.1 | |
10 | * of the License, or (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20 | * | |
21 | */ | |
22 | ||
a99bbaf5 | 23 | #include <linux/sched.h> |
1da177e4 LT |
24 | #include <linux/spinlock.h> |
25 | #include <linux/slab.h> | |
26 | #include <linux/vmalloc.h> | |
27 | #include <linux/module.h> | |
16ef8def | 28 | #include <linux/smp_lock.h> |
1da177e4 LT |
29 | #include <linux/poll.h> |
30 | #include <linux/ioctl.h> | |
31 | #include <linux/wait.h> | |
32 | #include <asm/uaccess.h> | |
33 | #include <asm/system.h> | |
1da177e4 LT |
34 | #include "dmxdev.h" |
35 | ||
36 | static int debug; | |
37 | ||
38 | module_param(debug, int, 0644); | |
39 | MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); | |
40 | ||
41 | #define dprintk if (debug) printk | |
42 | ||
34731df2 AO |
43 | static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf, |
44 | const u8 *src, size_t len) | |
1da177e4 | 45 | { |
34731df2 | 46 | ssize_t free; |
1da177e4 LT |
47 | |
48 | if (!len) | |
49 | return 0; | |
50 | if (!buf->data) | |
51 | return 0; | |
52 | ||
34731df2 AO |
53 | free = dvb_ringbuffer_free(buf); |
54 | if (len > free) { | |
1da177e4 | 55 | dprintk("dmxdev: buffer overflow\n"); |
34731df2 | 56 | return -EOVERFLOW; |
1da177e4 | 57 | } |
34731df2 AO |
58 | |
59 | return dvb_ringbuffer_write(buf, src, len); | |
1da177e4 LT |
60 | } |
61 | ||
34731df2 | 62 | static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src, |
f705e6e4 AO |
63 | int non_blocking, char __user *buf, |
64 | size_t count, loff_t *ppos) | |
1da177e4 | 65 | { |
34731df2 AO |
66 | size_t todo; |
67 | ssize_t avail; | |
68 | ssize_t ret = 0; | |
1da177e4 LT |
69 | |
70 | if (!src->data) | |
71 | return 0; | |
72 | ||
34731df2 AO |
73 | if (src->error) { |
74 | ret = src->error; | |
75 | dvb_ringbuffer_flush(src); | |
76 | return ret; | |
1da177e4 LT |
77 | } |
78 | ||
34731df2 AO |
79 | for (todo = count; todo > 0; todo -= ret) { |
80 | if (non_blocking && dvb_ringbuffer_empty(src)) { | |
81 | ret = -EWOULDBLOCK; | |
82 | break; | |
83 | } | |
1da177e4 | 84 | |
34731df2 AO |
85 | ret = wait_event_interruptible(src->queue, |
86 | !dvb_ringbuffer_empty(src) || | |
87 | (src->error != 0)); | |
88 | if (ret < 0) | |
89 | break; | |
1da177e4 | 90 | |
34731df2 AO |
91 | if (src->error) { |
92 | ret = src->error; | |
93 | dvb_ringbuffer_flush(src); | |
94 | break; | |
1da177e4 LT |
95 | } |
96 | ||
34731df2 | 97 | avail = dvb_ringbuffer_avail(src); |
f705e6e4 AO |
98 | if (avail > todo) |
99 | avail = todo; | |
34731df2 | 100 | |
b0ba0e3a | 101 | ret = dvb_ringbuffer_read_user(src, buf, avail); |
34731df2 AO |
102 | if (ret < 0) |
103 | break; | |
104 | ||
105 | buf += ret; | |
1da177e4 | 106 | } |
34731df2 AO |
107 | |
108 | return (count - todo) ? (count - todo) : ret; | |
1da177e4 LT |
109 | } |
110 | ||
f705e6e4 | 111 | static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type) |
1da177e4 LT |
112 | { |
113 | struct list_head *head, *pos; | |
114 | ||
f705e6e4 | 115 | head = demux->get_frontends(demux); |
1da177e4 LT |
116 | if (!head) |
117 | return NULL; | |
118 | list_for_each(pos, head) | |
f705e6e4 | 119 | if (DMX_FE_ENTRY(pos)->source == type) |
1da177e4 LT |
120 | return DMX_FE_ENTRY(pos); |
121 | ||
122 | return NULL; | |
123 | } | |
124 | ||
1da177e4 LT |
125 | static int dvb_dvr_open(struct inode *inode, struct file *file) |
126 | { | |
0c53c70f JS |
127 | struct dvb_device *dvbdev = file->private_data; |
128 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
129 | struct dmx_frontend *front; |
130 | ||
46b4f7c1 | 131 | dprintk("function : %s\n", __func__); |
1da177e4 | 132 | |
3593cab5 | 133 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
134 | return -ERESTARTSYS; |
135 | ||
57861b43 MR |
136 | if (dmxdev->exit) { |
137 | mutex_unlock(&dmxdev->mutex); | |
138 | return -ENODEV; | |
139 | } | |
140 | ||
f705e6e4 AO |
141 | if ((file->f_flags & O_ACCMODE) == O_RDWR) { |
142 | if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) { | |
3593cab5 | 143 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
144 | return -EOPNOTSUPP; |
145 | } | |
146 | } | |
147 | ||
f705e6e4 | 148 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
5e85bd05 TP |
149 | void *mem; |
150 | if (!dvbdev->readers) { | |
151 | mutex_unlock(&dmxdev->mutex); | |
152 | return -EBUSY; | |
153 | } | |
154 | mem = vmalloc(DVR_BUFFER_SIZE); | |
34731df2 | 155 | if (!mem) { |
f705e6e4 AO |
156 | mutex_unlock(&dmxdev->mutex); |
157 | return -ENOMEM; | |
158 | } | |
34731df2 | 159 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE); |
5e85bd05 | 160 | dvbdev->readers--; |
1da177e4 LT |
161 | } |
162 | ||
f705e6e4 AO |
163 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
164 | dmxdev->dvr_orig_fe = dmxdev->demux->frontend; | |
1da177e4 LT |
165 | |
166 | if (!dmxdev->demux->write) { | |
3593cab5 | 167 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
168 | return -EOPNOTSUPP; |
169 | } | |
170 | ||
f705e6e4 | 171 | front = get_fe(dmxdev->demux, DMX_MEMORY_FE); |
1da177e4 LT |
172 | |
173 | if (!front) { | |
3593cab5 | 174 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
175 | return -EINVAL; |
176 | } | |
177 | dmxdev->demux->disconnect_frontend(dmxdev->demux); | |
178 | dmxdev->demux->connect_frontend(dmxdev->demux, front); | |
179 | } | |
57861b43 | 180 | dvbdev->users++; |
3593cab5 | 181 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
182 | return 0; |
183 | } | |
184 | ||
185 | static int dvb_dvr_release(struct inode *inode, struct file *file) | |
186 | { | |
0c53c70f JS |
187 | struct dvb_device *dvbdev = file->private_data; |
188 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 | 189 | |
c2788502 | 190 | mutex_lock(&dmxdev->mutex); |
1da177e4 | 191 | |
f705e6e4 | 192 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
1da177e4 LT |
193 | dmxdev->demux->disconnect_frontend(dmxdev->demux); |
194 | dmxdev->demux->connect_frontend(dmxdev->demux, | |
195 | dmxdev->dvr_orig_fe); | |
196 | } | |
f705e6e4 | 197 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
5e85bd05 | 198 | dvbdev->readers++; |
1da177e4 | 199 | if (dmxdev->dvr_buffer.data) { |
f705e6e4 | 200 | void *mem = dmxdev->dvr_buffer.data; |
1da177e4 LT |
201 | mb(); |
202 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 203 | dmxdev->dvr_buffer.data = NULL; |
1da177e4 LT |
204 | spin_unlock_irq(&dmxdev->lock); |
205 | vfree(mem); | |
206 | } | |
207 | } | |
57861b43 MR |
208 | /* TODO */ |
209 | dvbdev->users--; | |
210 | if(dvbdev->users==-1 && dmxdev->exit==1) { | |
211 | fops_put(file->f_op); | |
212 | file->f_op = NULL; | |
213 | mutex_unlock(&dmxdev->mutex); | |
214 | wake_up(&dvbdev->wait_queue); | |
215 | } else | |
216 | mutex_unlock(&dmxdev->mutex); | |
217 | ||
1da177e4 LT |
218 | return 0; |
219 | } | |
220 | ||
221 | static ssize_t dvb_dvr_write(struct file *file, const char __user *buf, | |
f705e6e4 | 222 | size_t count, loff_t *ppos) |
1da177e4 | 223 | { |
0c53c70f JS |
224 | struct dvb_device *dvbdev = file->private_data; |
225 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
226 | int ret; |
227 | ||
228 | if (!dmxdev->demux->write) | |
229 | return -EOPNOTSUPP; | |
f705e6e4 | 230 | if ((file->f_flags & O_ACCMODE) != O_WRONLY) |
1da177e4 | 231 | return -EINVAL; |
3593cab5 | 232 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 | 233 | return -ERESTARTSYS; |
57861b43 MR |
234 | |
235 | if (dmxdev->exit) { | |
236 | mutex_unlock(&dmxdev->mutex); | |
237 | return -ENODEV; | |
238 | } | |
f705e6e4 | 239 | ret = dmxdev->demux->write(dmxdev->demux, buf, count); |
3593cab5 | 240 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
241 | return ret; |
242 | } | |
243 | ||
244 | static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count, | |
f705e6e4 | 245 | loff_t *ppos) |
1da177e4 | 246 | { |
0c53c70f JS |
247 | struct dvb_device *dvbdev = file->private_data; |
248 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 | 249 | |
eda9f752 | 250 | if (dmxdev->exit) |
57861b43 | 251 | return -ENODEV; |
57861b43 | 252 | |
eda9f752 SA |
253 | return dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer, |
254 | file->f_flags & O_NONBLOCK, | |
255 | buf, count, ppos); | |
1da177e4 LT |
256 | } |
257 | ||
a095be4b AO |
258 | static int dvb_dvr_set_buffer_size(struct dmxdev *dmxdev, |
259 | unsigned long size) | |
260 | { | |
261 | struct dvb_ringbuffer *buf = &dmxdev->dvr_buffer; | |
262 | void *newmem; | |
263 | void *oldmem; | |
264 | ||
265 | dprintk("function : %s\n", __func__); | |
266 | ||
267 | if (buf->size == size) | |
268 | return 0; | |
269 | if (!size) | |
270 | return -EINVAL; | |
271 | ||
272 | newmem = vmalloc(size); | |
273 | if (!newmem) | |
274 | return -ENOMEM; | |
275 | ||
276 | oldmem = buf->data; | |
277 | ||
278 | spin_lock_irq(&dmxdev->lock); | |
279 | buf->data = newmem; | |
280 | buf->size = size; | |
281 | ||
282 | /* reset and not flush in case the buffer shrinks */ | |
283 | dvb_ringbuffer_reset(buf); | |
284 | spin_unlock_irq(&dmxdev->lock); | |
285 | ||
286 | vfree(oldmem); | |
287 | ||
288 | return 0; | |
289 | } | |
290 | ||
f705e6e4 AO |
291 | static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter |
292 | *dmxdevfilter, int state) | |
1da177e4 LT |
293 | { |
294 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 295 | dmxdevfilter->state = state; |
1da177e4 LT |
296 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
297 | } | |
298 | ||
f705e6e4 AO |
299 | static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, |
300 | unsigned long size) | |
1da177e4 | 301 | { |
34731df2 | 302 | struct dvb_ringbuffer *buf = &dmxdevfilter->buffer; |
a095be4b AO |
303 | void *newmem; |
304 | void *oldmem; | |
1da177e4 | 305 | |
f705e6e4 | 306 | if (buf->size == size) |
1da177e4 | 307 | return 0; |
a095be4b AO |
308 | if (!size) |
309 | return -EINVAL; | |
f705e6e4 | 310 | if (dmxdevfilter->state >= DMXDEV_STATE_GO) |
1da177e4 | 311 | return -EBUSY; |
a095be4b AO |
312 | |
313 | newmem = vmalloc(size); | |
314 | if (!newmem) | |
315 | return -ENOMEM; | |
316 | ||
317 | oldmem = buf->data; | |
318 | ||
1da177e4 | 319 | spin_lock_irq(&dmxdevfilter->dev->lock); |
a095be4b | 320 | buf->data = newmem; |
f705e6e4 | 321 | buf->size = size; |
48c01a9c AO |
322 | |
323 | /* reset and not flush in case the buffer shrinks */ | |
324 | dvb_ringbuffer_reset(buf); | |
1da177e4 | 325 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
1da177e4 | 326 | |
a095be4b AO |
327 | vfree(oldmem); |
328 | ||
1da177e4 LT |
329 | return 0; |
330 | } | |
331 | ||
332 | static void dvb_dmxdev_filter_timeout(unsigned long data) | |
333 | { | |
f705e6e4 | 334 | struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data; |
1da177e4 | 335 | |
f705e6e4 | 336 | dmxdevfilter->buffer.error = -ETIMEDOUT; |
1da177e4 | 337 | spin_lock_irq(&dmxdevfilter->dev->lock); |
f705e6e4 | 338 | dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT; |
1da177e4 LT |
339 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
340 | wake_up(&dmxdevfilter->buffer.queue); | |
341 | } | |
342 | ||
343 | static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter) | |
344 | { | |
f705e6e4 | 345 | struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec; |
1da177e4 LT |
346 | |
347 | del_timer(&dmxdevfilter->timer); | |
348 | if (para->timeout) { | |
f705e6e4 AO |
349 | dmxdevfilter->timer.function = dvb_dmxdev_filter_timeout; |
350 | dmxdevfilter->timer.data = (unsigned long)dmxdevfilter; | |
351 | dmxdevfilter->timer.expires = | |
352 | jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000; | |
1da177e4 LT |
353 | add_timer(&dmxdevfilter->timer); |
354 | } | |
355 | } | |
356 | ||
357 | static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
358 | const u8 *buffer2, size_t buffer2_len, |
359 | struct dmx_section_filter *filter, | |
360 | enum dmx_success success) | |
1da177e4 | 361 | { |
0c53c70f | 362 | struct dmxdev_filter *dmxdevfilter = filter->priv; |
1da177e4 LT |
363 | int ret; |
364 | ||
365 | if (dmxdevfilter->buffer.error) { | |
366 | wake_up(&dmxdevfilter->buffer.queue); | |
367 | return 0; | |
368 | } | |
28100165 | 369 | spin_lock(&dmxdevfilter->dev->lock); |
f705e6e4 | 370 | if (dmxdevfilter->state != DMXDEV_STATE_GO) { |
28100165 | 371 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
372 | return 0; |
373 | } | |
374 | del_timer(&dmxdevfilter->timer); | |
375 | dprintk("dmxdev: section callback %02x %02x %02x %02x %02x %02x\n", | |
376 | buffer1[0], buffer1[1], | |
f705e6e4 AO |
377 | buffer1[2], buffer1[3], buffer1[4], buffer1[5]); |
378 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1, | |
379 | buffer1_len); | |
380 | if (ret == buffer1_len) { | |
381 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2, | |
382 | buffer2_len); | |
1da177e4 | 383 | } |
f705e6e4 | 384 | if (ret < 0) { |
34731df2 AO |
385 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); |
386 | dmxdevfilter->buffer.error = ret; | |
1da177e4 | 387 | } |
f705e6e4 AO |
388 | if (dmxdevfilter->params.sec.flags & DMX_ONESHOT) |
389 | dmxdevfilter->state = DMXDEV_STATE_DONE; | |
28100165 | 390 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
391 | wake_up(&dmxdevfilter->buffer.queue); |
392 | return 0; | |
393 | } | |
394 | ||
395 | static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
396 | const u8 *buffer2, size_t buffer2_len, |
397 | struct dmx_ts_feed *feed, | |
398 | enum dmx_success success) | |
1da177e4 | 399 | { |
0c53c70f | 400 | struct dmxdev_filter *dmxdevfilter = feed->priv; |
34731df2 | 401 | struct dvb_ringbuffer *buffer; |
1da177e4 LT |
402 | int ret; |
403 | ||
28100165 | 404 | spin_lock(&dmxdevfilter->dev->lock); |
f705e6e4 | 405 | if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) { |
28100165 | 406 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
407 | return 0; |
408 | } | |
409 | ||
b01cd937 PH |
410 | if (dmxdevfilter->params.pes.output == DMX_OUT_TAP |
411 | || dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP) | |
f705e6e4 | 412 | buffer = &dmxdevfilter->buffer; |
1da177e4 | 413 | else |
f705e6e4 | 414 | buffer = &dmxdevfilter->dev->dvr_buffer; |
1da177e4 | 415 | if (buffer->error) { |
28100165 | 416 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
417 | wake_up(&buffer->queue); |
418 | return 0; | |
419 | } | |
f705e6e4 AO |
420 | ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len); |
421 | if (ret == buffer1_len) | |
422 | ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len); | |
423 | if (ret < 0) { | |
34731df2 AO |
424 | dvb_ringbuffer_flush(buffer); |
425 | buffer->error = ret; | |
1da177e4 | 426 | } |
28100165 | 427 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
428 | wake_up(&buffer->queue); |
429 | return 0; | |
430 | } | |
431 | ||
1da177e4 | 432 | /* stop feed but only mark the specified filter as stopped (state set) */ |
1da177e4 LT |
433 | static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter) |
434 | { | |
1cb662a3 AO |
435 | struct dmxdev_feed *feed; |
436 | ||
1da177e4 LT |
437 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); |
438 | ||
439 | switch (dmxdevfilter->type) { | |
440 | case DMXDEV_TYPE_SEC: | |
441 | del_timer(&dmxdevfilter->timer); | |
442 | dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec); | |
443 | break; | |
444 | case DMXDEV_TYPE_PES: | |
1cb662a3 AO |
445 | list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) |
446 | feed->ts->stop_filtering(feed->ts); | |
1da177e4 LT |
447 | break; |
448 | default: | |
449 | return -EINVAL; | |
450 | } | |
451 | return 0; | |
452 | } | |
453 | ||
1da177e4 | 454 | /* start feed associated with the specified filter */ |
1da177e4 LT |
455 | static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter) |
456 | { | |
1cb662a3 AO |
457 | struct dmxdev_feed *feed; |
458 | int ret; | |
459 | ||
f705e6e4 | 460 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); |
1da177e4 LT |
461 | |
462 | switch (filter->type) { | |
463 | case DMXDEV_TYPE_SEC: | |
464 | return filter->feed.sec->start_filtering(filter->feed.sec); | |
1da177e4 | 465 | case DMXDEV_TYPE_PES: |
1cb662a3 AO |
466 | list_for_each_entry(feed, &filter->feed.ts, next) { |
467 | ret = feed->ts->start_filtering(feed->ts); | |
468 | if (ret < 0) { | |
469 | dvb_dmxdev_feed_stop(filter); | |
470 | return ret; | |
471 | } | |
472 | } | |
473 | break; | |
1da177e4 LT |
474 | default: |
475 | return -EINVAL; | |
476 | } | |
477 | ||
478 | return 0; | |
479 | } | |
480 | ||
1da177e4 LT |
481 | /* restart section feed if it has filters left associated with it, |
482 | otherwise release the feed */ | |
1da177e4 LT |
483 | static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter) |
484 | { | |
485 | int i; | |
486 | struct dmxdev *dmxdev = filter->dev; | |
487 | u16 pid = filter->params.sec.pid; | |
488 | ||
f705e6e4 AO |
489 | for (i = 0; i < dmxdev->filternum; i++) |
490 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && | |
491 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && | |
492 | dmxdev->filter[i].params.sec.pid == pid) { | |
1da177e4 LT |
493 | dvb_dmxdev_feed_start(&dmxdev->filter[i]); |
494 | return 0; | |
495 | } | |
496 | ||
f705e6e4 AO |
497 | filter->dev->demux->release_section_feed(dmxdev->demux, |
498 | filter->feed.sec); | |
1da177e4 LT |
499 | |
500 | return 0; | |
501 | } | |
502 | ||
503 | static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter) | |
504 | { | |
1cb662a3 AO |
505 | struct dmxdev_feed *feed; |
506 | struct dmx_demux *demux; | |
507 | ||
f705e6e4 | 508 | if (dmxdevfilter->state < DMXDEV_STATE_GO) |
1da177e4 LT |
509 | return 0; |
510 | ||
511 | switch (dmxdevfilter->type) { | |
512 | case DMXDEV_TYPE_SEC: | |
513 | if (!dmxdevfilter->feed.sec) | |
514 | break; | |
515 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
516 | if (dmxdevfilter->filter.sec) | |
517 | dmxdevfilter->feed.sec-> | |
f705e6e4 AO |
518 | release_filter(dmxdevfilter->feed.sec, |
519 | dmxdevfilter->filter.sec); | |
1da177e4 | 520 | dvb_dmxdev_feed_restart(dmxdevfilter); |
f705e6e4 | 521 | dmxdevfilter->feed.sec = NULL; |
1da177e4 LT |
522 | break; |
523 | case DMXDEV_TYPE_PES: | |
1da177e4 | 524 | dvb_dmxdev_feed_stop(dmxdevfilter); |
1cb662a3 AO |
525 | demux = dmxdevfilter->dev->demux; |
526 | list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) { | |
527 | demux->release_ts_feed(demux, feed->ts); | |
528 | feed->ts = NULL; | |
529 | } | |
1da177e4 LT |
530 | break; |
531 | default: | |
f705e6e4 | 532 | if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED) |
1da177e4 LT |
533 | return 0; |
534 | return -EINVAL; | |
535 | } | |
34731df2 AO |
536 | |
537 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); | |
1da177e4 LT |
538 | return 0; |
539 | } | |
540 | ||
1cb662a3 AO |
541 | static void dvb_dmxdev_delete_pids(struct dmxdev_filter *dmxdevfilter) |
542 | { | |
543 | struct dmxdev_feed *feed, *tmp; | |
544 | ||
545 | /* delete all PIDs */ | |
546 | list_for_each_entry_safe(feed, tmp, &dmxdevfilter->feed.ts, next) { | |
547 | list_del(&feed->next); | |
548 | kfree(feed); | |
549 | } | |
550 | ||
551 | BUG_ON(!list_empty(&dmxdevfilter->feed.ts)); | |
552 | } | |
553 | ||
1da177e4 LT |
554 | static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter) |
555 | { | |
f705e6e4 | 556 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
557 | return 0; |
558 | ||
1cb662a3 AO |
559 | if (dmxdevfilter->type == DMXDEV_TYPE_PES) |
560 | dvb_dmxdev_delete_pids(dmxdevfilter); | |
561 | ||
f705e6e4 | 562 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 LT |
563 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
564 | return 0; | |
565 | } | |
566 | ||
1cb662a3 AO |
567 | static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev, |
568 | struct dmxdev_filter *filter, | |
569 | struct dmxdev_feed *feed) | |
570 | { | |
571 | struct timespec timeout = { 0 }; | |
572 | struct dmx_pes_filter_params *para = &filter->params.pes; | |
573 | dmx_output_t otype; | |
574 | int ret; | |
575 | int ts_type; | |
576 | enum dmx_ts_pes ts_pes; | |
577 | struct dmx_ts_feed *tsfeed; | |
578 | ||
579 | feed->ts = NULL; | |
580 | otype = para->output; | |
581 | ||
582 | ts_pes = (enum dmx_ts_pes)para->pes_type; | |
583 | ||
584 | if (ts_pes < DMX_PES_OTHER) | |
585 | ts_type = TS_DECODER; | |
586 | else | |
587 | ts_type = 0; | |
588 | ||
589 | if (otype == DMX_OUT_TS_TAP) | |
590 | ts_type |= TS_PACKET; | |
591 | else if (otype == DMX_OUT_TSDEMUX_TAP) | |
592 | ts_type |= TS_PACKET | TS_DEMUX; | |
593 | else if (otype == DMX_OUT_TAP) | |
594 | ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY; | |
595 | ||
596 | ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, &feed->ts, | |
597 | dvb_dmxdev_ts_callback); | |
598 | if (ret < 0) | |
599 | return ret; | |
600 | ||
601 | tsfeed = feed->ts; | |
602 | tsfeed->priv = filter; | |
603 | ||
604 | ret = tsfeed->set(tsfeed, feed->pid, ts_type, ts_pes, 32768, timeout); | |
605 | if (ret < 0) { | |
606 | dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed); | |
607 | return ret; | |
608 | } | |
609 | ||
610 | ret = tsfeed->start_filtering(tsfeed); | |
611 | if (ret < 0) { | |
612 | dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed); | |
613 | return ret; | |
614 | } | |
615 | ||
616 | return 0; | |
617 | } | |
618 | ||
1da177e4 LT |
619 | static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) |
620 | { | |
621 | struct dmxdev *dmxdev = filter->dev; | |
1cb662a3 | 622 | struct dmxdev_feed *feed; |
1da177e4 LT |
623 | void *mem; |
624 | int ret, i; | |
625 | ||
626 | if (filter->state < DMXDEV_STATE_SET) | |
627 | return -EINVAL; | |
628 | ||
629 | if (filter->state >= DMXDEV_STATE_GO) | |
630 | dvb_dmxdev_filter_stop(filter); | |
631 | ||
34731df2 | 632 | if (!filter->buffer.data) { |
1da177e4 | 633 | mem = vmalloc(filter->buffer.size); |
34731df2 AO |
634 | if (!mem) |
635 | return -ENOMEM; | |
1da177e4 | 636 | spin_lock_irq(&filter->dev->lock); |
f705e6e4 | 637 | filter->buffer.data = mem; |
1da177e4 | 638 | spin_unlock_irq(&filter->dev->lock); |
1da177e4 LT |
639 | } |
640 | ||
34731df2 | 641 | dvb_ringbuffer_flush(&filter->buffer); |
1da177e4 LT |
642 | |
643 | switch (filter->type) { | |
644 | case DMXDEV_TYPE_SEC: | |
645 | { | |
f705e6e4 AO |
646 | struct dmx_sct_filter_params *para = &filter->params.sec; |
647 | struct dmx_section_filter **secfilter = &filter->filter.sec; | |
648 | struct dmx_section_feed **secfeed = &filter->feed.sec; | |
649 | ||
650 | *secfilter = NULL; | |
651 | *secfeed = NULL; | |
1da177e4 | 652 | |
1da177e4 LT |
653 | |
654 | /* find active filter/feed with same PID */ | |
f705e6e4 | 655 | for (i = 0; i < dmxdev->filternum; i++) { |
1da177e4 | 656 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && |
09794a6f AO |
657 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && |
658 | dmxdev->filter[i].params.sec.pid == para->pid) { | |
1da177e4 LT |
659 | *secfeed = dmxdev->filter[i].feed.sec; |
660 | break; | |
661 | } | |
662 | } | |
663 | ||
664 | /* if no feed found, try to allocate new one */ | |
665 | if (!*secfeed) { | |
f705e6e4 AO |
666 | ret = dmxdev->demux->allocate_section_feed(dmxdev->demux, |
667 | secfeed, | |
668 | dvb_dmxdev_section_callback); | |
669 | if (ret < 0) { | |
670 | printk("DVB (%s): could not alloc feed\n", | |
46b4f7c1 | 671 | __func__); |
1da177e4 LT |
672 | return ret; |
673 | } | |
674 | ||
f705e6e4 AO |
675 | ret = (*secfeed)->set(*secfeed, para->pid, 32768, |
676 | (para->flags & DMX_CHECK_CRC) ? 1 : 0); | |
677 | if (ret < 0) { | |
678 | printk("DVB (%s): could not set feed\n", | |
46b4f7c1 | 679 | __func__); |
1da177e4 LT |
680 | dvb_dmxdev_feed_restart(filter); |
681 | return ret; | |
682 | } | |
683 | } else { | |
684 | dvb_dmxdev_feed_stop(filter); | |
685 | } | |
686 | ||
f705e6e4 | 687 | ret = (*secfeed)->allocate_filter(*secfeed, secfilter); |
1da177e4 LT |
688 | if (ret < 0) { |
689 | dvb_dmxdev_feed_restart(filter); | |
690 | filter->feed.sec->start_filtering(*secfeed); | |
f705e6e4 | 691 | dprintk("could not get filter\n"); |
1da177e4 LT |
692 | return ret; |
693 | } | |
694 | ||
695 | (*secfilter)->priv = filter; | |
696 | ||
697 | memcpy(&((*secfilter)->filter_value[3]), | |
f705e6e4 | 698 | &(para->filter.filter[1]), DMX_FILTER_SIZE - 1); |
1da177e4 | 699 | memcpy(&(*secfilter)->filter_mask[3], |
f705e6e4 | 700 | ¶->filter.mask[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 701 | memcpy(&(*secfilter)->filter_mode[3], |
f705e6e4 | 702 | ¶->filter.mode[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 703 | |
f705e6e4 AO |
704 | (*secfilter)->filter_value[0] = para->filter.filter[0]; |
705 | (*secfilter)->filter_mask[0] = para->filter.mask[0]; | |
706 | (*secfilter)->filter_mode[0] = para->filter.mode[0]; | |
707 | (*secfilter)->filter_mask[1] = 0; | |
708 | (*secfilter)->filter_mask[2] = 0; | |
1da177e4 LT |
709 | |
710 | filter->todo = 0; | |
711 | ||
f705e6e4 | 712 | ret = filter->feed.sec->start_filtering(filter->feed.sec); |
1da177e4 LT |
713 | if (ret < 0) |
714 | return ret; | |
715 | ||
716 | dvb_dmxdev_filter_timer(filter); | |
717 | break; | |
718 | } | |
1da177e4 | 719 | case DMXDEV_TYPE_PES: |
1cb662a3 AO |
720 | list_for_each_entry(feed, &filter->feed.ts, next) { |
721 | ret = dvb_dmxdev_start_feed(dmxdev, filter, feed); | |
722 | if (ret < 0) { | |
723 | dvb_dmxdev_filter_stop(filter); | |
724 | return ret; | |
725 | } | |
76197924 | 726 | } |
1da177e4 | 727 | break; |
1da177e4 LT |
728 | default: |
729 | return -EINVAL; | |
730 | } | |
731 | ||
732 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); | |
733 | return 0; | |
734 | } | |
735 | ||
736 | static int dvb_demux_open(struct inode *inode, struct file *file) | |
737 | { | |
0c53c70f JS |
738 | struct dvb_device *dvbdev = file->private_data; |
739 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
740 | int i; |
741 | struct dmxdev_filter *dmxdevfilter; | |
742 | ||
743 | if (!dmxdev->filter) | |
744 | return -EINVAL; | |
745 | ||
3593cab5 | 746 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
747 | return -ERESTARTSYS; |
748 | ||
f705e6e4 AO |
749 | for (i = 0; i < dmxdev->filternum; i++) |
750 | if (dmxdev->filter[i].state == DMXDEV_STATE_FREE) | |
1da177e4 LT |
751 | break; |
752 | ||
f705e6e4 | 753 | if (i == dmxdev->filternum) { |
3593cab5 | 754 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
755 | return -EMFILE; |
756 | } | |
757 | ||
f705e6e4 | 758 | dmxdevfilter = &dmxdev->filter[i]; |
3593cab5 | 759 | mutex_init(&dmxdevfilter->mutex); |
f705e6e4 | 760 | file->private_data = dmxdevfilter; |
1da177e4 | 761 | |
34731df2 | 762 | dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192); |
f705e6e4 | 763 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 | 764 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
1da177e4 LT |
765 | init_timer(&dmxdevfilter->timer); |
766 | ||
57861b43 MR |
767 | dvbdev->users++; |
768 | ||
3593cab5 | 769 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
770 | return 0; |
771 | } | |
772 | ||
f705e6e4 AO |
773 | static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, |
774 | struct dmxdev_filter *dmxdevfilter) | |
1da177e4 | 775 | { |
c2788502 SA |
776 | mutex_lock(&dmxdev->mutex); |
777 | mutex_lock(&dmxdevfilter->mutex); | |
1da177e4 LT |
778 | |
779 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
780 | dvb_dmxdev_filter_reset(dmxdevfilter); | |
781 | ||
782 | if (dmxdevfilter->buffer.data) { | |
f705e6e4 | 783 | void *mem = dmxdevfilter->buffer.data; |
1da177e4 LT |
784 | |
785 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 786 | dmxdevfilter->buffer.data = NULL; |
1da177e4 LT |
787 | spin_unlock_irq(&dmxdev->lock); |
788 | vfree(mem); | |
789 | } | |
790 | ||
791 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE); | |
792 | wake_up(&dmxdevfilter->buffer.queue); | |
3593cab5 IM |
793 | mutex_unlock(&dmxdevfilter->mutex); |
794 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
795 | return 0; |
796 | } | |
797 | ||
798 | static inline void invert_mode(dmx_filter_t *filter) | |
799 | { | |
800 | int i; | |
801 | ||
f705e6e4 AO |
802 | for (i = 0; i < DMX_FILTER_SIZE; i++) |
803 | filter->mode[i] ^= 0xff; | |
1da177e4 LT |
804 | } |
805 | ||
1cb662a3 AO |
806 | static int dvb_dmxdev_add_pid(struct dmxdev *dmxdev, |
807 | struct dmxdev_filter *filter, u16 pid) | |
808 | { | |
809 | struct dmxdev_feed *feed; | |
810 | ||
811 | if ((filter->type != DMXDEV_TYPE_PES) || | |
812 | (filter->state < DMXDEV_STATE_SET)) | |
813 | return -EINVAL; | |
814 | ||
815 | /* only TS packet filters may have multiple PIDs */ | |
816 | if ((filter->params.pes.output != DMX_OUT_TSDEMUX_TAP) && | |
817 | (!list_empty(&filter->feed.ts))) | |
818 | return -EINVAL; | |
819 | ||
820 | feed = kzalloc(sizeof(struct dmxdev_feed), GFP_KERNEL); | |
821 | if (feed == NULL) | |
822 | return -ENOMEM; | |
823 | ||
824 | feed->pid = pid; | |
825 | list_add(&feed->next, &filter->feed.ts); | |
826 | ||
827 | if (filter->state >= DMXDEV_STATE_GO) | |
828 | return dvb_dmxdev_start_feed(dmxdev, filter, feed); | |
829 | ||
830 | return 0; | |
831 | } | |
832 | ||
833 | static int dvb_dmxdev_remove_pid(struct dmxdev *dmxdev, | |
834 | struct dmxdev_filter *filter, u16 pid) | |
835 | { | |
836 | struct dmxdev_feed *feed, *tmp; | |
837 | ||
838 | if ((filter->type != DMXDEV_TYPE_PES) || | |
839 | (filter->state < DMXDEV_STATE_SET)) | |
840 | return -EINVAL; | |
841 | ||
842 | list_for_each_entry_safe(feed, tmp, &filter->feed.ts, next) { | |
843 | if ((feed->pid == pid) && (feed->ts != NULL)) { | |
844 | feed->ts->stop_filtering(feed->ts); | |
845 | filter->dev->demux->release_ts_feed(filter->dev->demux, | |
846 | feed->ts); | |
847 | list_del(&feed->next); | |
848 | kfree(feed); | |
849 | } | |
850 | } | |
851 | ||
852 | return 0; | |
853 | } | |
854 | ||
1da177e4 | 855 | static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev, |
f705e6e4 AO |
856 | struct dmxdev_filter *dmxdevfilter, |
857 | struct dmx_sct_filter_params *params) | |
1da177e4 | 858 | { |
46b4f7c1 | 859 | dprintk("function : %s\n", __func__); |
1da177e4 LT |
860 | |
861 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
862 | ||
f705e6e4 | 863 | dmxdevfilter->type = DMXDEV_TYPE_SEC; |
1da177e4 LT |
864 | memcpy(&dmxdevfilter->params.sec, |
865 | params, sizeof(struct dmx_sct_filter_params)); | |
866 | invert_mode(&dmxdevfilter->params.sec.filter); | |
867 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
868 | ||
f705e6e4 | 869 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
870 | return dvb_dmxdev_filter_start(dmxdevfilter); |
871 | ||
872 | return 0; | |
873 | } | |
874 | ||
875 | static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev, | |
f705e6e4 AO |
876 | struct dmxdev_filter *dmxdevfilter, |
877 | struct dmx_pes_filter_params *params) | |
1da177e4 | 878 | { |
1cb662a3 AO |
879 | int ret; |
880 | ||
1da177e4 | 881 | dvb_dmxdev_filter_stop(dmxdevfilter); |
1cb662a3 | 882 | dvb_dmxdev_filter_reset(dmxdevfilter); |
1da177e4 | 883 | |
f705e6e4 | 884 | if (params->pes_type > DMX_PES_OTHER || params->pes_type < 0) |
1da177e4 LT |
885 | return -EINVAL; |
886 | ||
f705e6e4 AO |
887 | dmxdevfilter->type = DMXDEV_TYPE_PES; |
888 | memcpy(&dmxdevfilter->params, params, | |
889 | sizeof(struct dmx_pes_filter_params)); | |
691c9ae0 | 890 | INIT_LIST_HEAD(&dmxdevfilter->feed.ts); |
1da177e4 LT |
891 | |
892 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
893 | ||
1cb662a3 AO |
894 | ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, |
895 | dmxdevfilter->params.pes.pid); | |
896 | if (ret < 0) | |
897 | return ret; | |
898 | ||
f705e6e4 | 899 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
900 | return dvb_dmxdev_filter_start(dmxdevfilter); |
901 | ||
902 | return 0; | |
903 | } | |
904 | ||
905 | static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil, | |
f705e6e4 AO |
906 | struct file *file, char __user *buf, |
907 | size_t count, loff_t *ppos) | |
1da177e4 LT |
908 | { |
909 | int result, hcount; | |
f705e6e4 AO |
910 | int done = 0; |
911 | ||
912 | if (dfil->todo <= 0) { | |
913 | hcount = 3 + dfil->todo; | |
914 | if (hcount > count) | |
915 | hcount = count; | |
916 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
917 | file->f_flags & O_NONBLOCK, | |
918 | buf, hcount, ppos); | |
919 | if (result < 0) { | |
920 | dfil->todo = 0; | |
1da177e4 LT |
921 | return result; |
922 | } | |
f705e6e4 | 923 | if (copy_from_user(dfil->secheader - dfil->todo, buf, result)) |
1da177e4 | 924 | return -EFAULT; |
f705e6e4 AO |
925 | buf += result; |
926 | done = result; | |
927 | count -= result; | |
928 | dfil->todo -= result; | |
929 | if (dfil->todo > -3) | |
1da177e4 | 930 | return done; |
f705e6e4 | 931 | dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff; |
1da177e4 LT |
932 | if (!count) |
933 | return done; | |
934 | } | |
f705e6e4 AO |
935 | if (count > dfil->todo) |
936 | count = dfil->todo; | |
937 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
938 | file->f_flags & O_NONBLOCK, | |
939 | buf, count, ppos); | |
940 | if (result < 0) | |
1da177e4 | 941 | return result; |
f705e6e4 AO |
942 | dfil->todo -= result; |
943 | return (result + done); | |
1da177e4 LT |
944 | } |
945 | ||
1da177e4 | 946 | static ssize_t |
f705e6e4 AO |
947 | dvb_demux_read(struct file *file, char __user *buf, size_t count, |
948 | loff_t *ppos) | |
1da177e4 | 949 | { |
f705e6e4 AO |
950 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
951 | int ret; | |
1da177e4 | 952 | |
3593cab5 | 953 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) |
1da177e4 LT |
954 | return -ERESTARTSYS; |
955 | ||
f705e6e4 AO |
956 | if (dmxdevfilter->type == DMXDEV_TYPE_SEC) |
957 | ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos); | |
1da177e4 | 958 | else |
f705e6e4 AO |
959 | ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer, |
960 | file->f_flags & O_NONBLOCK, | |
961 | buf, count, ppos); | |
1da177e4 | 962 | |
3593cab5 | 963 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
964 | return ret; |
965 | } | |
966 | ||
16ef8def | 967 | static int dvb_demux_do_ioctl(struct file *file, |
1da177e4 LT |
968 | unsigned int cmd, void *parg) |
969 | { | |
3ec4a307 | 970 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
f705e6e4 AO |
971 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
972 | unsigned long arg = (unsigned long)parg; | |
973 | int ret = 0; | |
1da177e4 | 974 | |
3593cab5 | 975 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
976 | return -ERESTARTSYS; |
977 | ||
978 | switch (cmd) { | |
979 | case DMX_START: | |
3593cab5 IM |
980 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
981 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
982 | return -ERESTARTSYS; |
983 | } | |
f705e6e4 | 984 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
985 | ret = -EINVAL; |
986 | else | |
987 | ret = dvb_dmxdev_filter_start(dmxdevfilter); | |
3593cab5 | 988 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
989 | break; |
990 | ||
991 | case DMX_STOP: | |
3593cab5 IM |
992 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
993 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
994 | return -ERESTARTSYS; |
995 | } | |
f705e6e4 | 996 | ret = dvb_dmxdev_filter_stop(dmxdevfilter); |
3593cab5 | 997 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
998 | break; |
999 | ||
1000 | case DMX_SET_FILTER: | |
3593cab5 IM |
1001 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
1002 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
1003 | return -ERESTARTSYS; |
1004 | } | |
f705e6e4 | 1005 | ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 1006 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
1007 | break; |
1008 | ||
1009 | case DMX_SET_PES_FILTER: | |
3593cab5 IM |
1010 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
1011 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
1012 | return -ERESTARTSYS; |
1013 | } | |
f705e6e4 | 1014 | ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 1015 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
1016 | break; |
1017 | ||
1018 | case DMX_SET_BUFFER_SIZE: | |
3593cab5 IM |
1019 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
1020 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
1021 | return -ERESTARTSYS; |
1022 | } | |
f705e6e4 | 1023 | ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg); |
3593cab5 | 1024 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
1025 | break; |
1026 | ||
1da177e4 LT |
1027 | case DMX_GET_PES_PIDS: |
1028 | if (!dmxdev->demux->get_pes_pids) { | |
f705e6e4 | 1029 | ret = -EINVAL; |
1da177e4 LT |
1030 | break; |
1031 | } | |
f705e6e4 | 1032 | dmxdev->demux->get_pes_pids(dmxdev->demux, parg); |
1da177e4 LT |
1033 | break; |
1034 | ||
c0510052 AO |
1035 | case DMX_GET_CAPS: |
1036 | if (!dmxdev->demux->get_caps) { | |
1037 | ret = -EINVAL; | |
1038 | break; | |
1039 | } | |
1040 | ret = dmxdev->demux->get_caps(dmxdev->demux, parg); | |
1041 | break; | |
1042 | ||
1043 | case DMX_SET_SOURCE: | |
1044 | if (!dmxdev->demux->set_source) { | |
1045 | ret = -EINVAL; | |
1046 | break; | |
1047 | } | |
1048 | ret = dmxdev->demux->set_source(dmxdev->demux, parg); | |
1049 | break; | |
1050 | ||
1da177e4 LT |
1051 | case DMX_GET_STC: |
1052 | if (!dmxdev->demux->get_stc) { | |
f705e6e4 | 1053 | ret = -EINVAL; |
1da177e4 LT |
1054 | break; |
1055 | } | |
1056 | ret = dmxdev->demux->get_stc(dmxdev->demux, | |
f705e6e4 AO |
1057 | ((struct dmx_stc *)parg)->num, |
1058 | &((struct dmx_stc *)parg)->stc, | |
1059 | &((struct dmx_stc *)parg)->base); | |
1da177e4 LT |
1060 | break; |
1061 | ||
1cb662a3 AO |
1062 | case DMX_ADD_PID: |
1063 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { | |
1064 | ret = -ERESTARTSYS; | |
1065 | break; | |
1066 | } | |
1067 | ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, *(u16 *)parg); | |
1068 | mutex_unlock(&dmxdevfilter->mutex); | |
1069 | break; | |
1070 | ||
1071 | case DMX_REMOVE_PID: | |
1072 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { | |
1073 | ret = -ERESTARTSYS; | |
1074 | break; | |
1075 | } | |
1076 | ret = dvb_dmxdev_remove_pid(dmxdev, dmxdevfilter, *(u16 *)parg); | |
1077 | mutex_unlock(&dmxdevfilter->mutex); | |
1078 | break; | |
1079 | ||
1da177e4 | 1080 | default: |
f705e6e4 AO |
1081 | ret = -EINVAL; |
1082 | break; | |
1da177e4 | 1083 | } |
3593cab5 | 1084 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
1085 | return ret; |
1086 | } | |
1087 | ||
16ef8def AB |
1088 | static long dvb_demux_ioctl(struct file *file, unsigned int cmd, |
1089 | unsigned long arg) | |
1da177e4 | 1090 | { |
16ef8def AB |
1091 | int ret; |
1092 | ||
1093 | lock_kernel(); | |
1094 | ret = dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl); | |
1095 | unlock_kernel(); | |
1096 | ||
1097 | return ret; | |
1da177e4 LT |
1098 | } |
1099 | ||
f705e6e4 | 1100 | static unsigned int dvb_demux_poll(struct file *file, poll_table *wait) |
1da177e4 | 1101 | { |
3ec4a307 | 1102 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
1103 | unsigned int mask = 0; |
1104 | ||
1105 | if (!dmxdevfilter) | |
1106 | return -EINVAL; | |
1107 | ||
1108 | poll_wait(file, &dmxdevfilter->buffer.queue, wait); | |
1109 | ||
1110 | if (dmxdevfilter->state != DMXDEV_STATE_GO && | |
1111 | dmxdevfilter->state != DMXDEV_STATE_DONE && | |
1112 | dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT) | |
1113 | return 0; | |
1114 | ||
1115 | if (dmxdevfilter->buffer.error) | |
1116 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
1117 | ||
34731df2 | 1118 | if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer)) |
1da177e4 LT |
1119 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
1120 | ||
1121 | return mask; | |
1122 | } | |
1123 | ||
1da177e4 LT |
1124 | static int dvb_demux_release(struct inode *inode, struct file *file) |
1125 | { | |
3ec4a307 | 1126 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
1127 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
1128 | ||
57861b43 MR |
1129 | int ret; |
1130 | ||
1131 | ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter); | |
1132 | ||
1133 | mutex_lock(&dmxdev->mutex); | |
1134 | dmxdev->dvbdev->users--; | |
1135 | if(dmxdev->dvbdev->users==1 && dmxdev->exit==1) { | |
1136 | fops_put(file->f_op); | |
1137 | file->f_op = NULL; | |
1138 | mutex_unlock(&dmxdev->mutex); | |
1139 | wake_up(&dmxdev->dvbdev->wait_queue); | |
1140 | } else | |
1141 | mutex_unlock(&dmxdev->mutex); | |
1142 | ||
1143 | return ret; | |
1da177e4 LT |
1144 | } |
1145 | ||
784e29d2 | 1146 | static const struct file_operations dvb_demux_fops = { |
f705e6e4 AO |
1147 | .owner = THIS_MODULE, |
1148 | .read = dvb_demux_read, | |
16ef8def | 1149 | .unlocked_ioctl = dvb_demux_ioctl, |
f705e6e4 AO |
1150 | .open = dvb_demux_open, |
1151 | .release = dvb_demux_release, | |
1152 | .poll = dvb_demux_poll, | |
1da177e4 LT |
1153 | }; |
1154 | ||
1da177e4 | 1155 | static struct dvb_device dvbdev_demux = { |
f705e6e4 AO |
1156 | .priv = NULL, |
1157 | .users = 1, | |
1158 | .writers = 1, | |
1159 | .fops = &dvb_demux_fops | |
1da177e4 LT |
1160 | }; |
1161 | ||
16ef8def | 1162 | static int dvb_dvr_do_ioctl(struct file *file, |
f705e6e4 | 1163 | unsigned int cmd, void *parg) |
1da177e4 | 1164 | { |
0c53c70f JS |
1165 | struct dvb_device *dvbdev = file->private_data; |
1166 | struct dmxdev *dmxdev = dvbdev->priv; | |
a095be4b | 1167 | unsigned long arg = (unsigned long)parg; |
f705e6e4 | 1168 | int ret; |
1da177e4 | 1169 | |
3593cab5 | 1170 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
1171 | return -ERESTARTSYS; |
1172 | ||
1173 | switch (cmd) { | |
1174 | case DMX_SET_BUFFER_SIZE: | |
a095be4b | 1175 | ret = dvb_dvr_set_buffer_size(dmxdev, arg); |
1da177e4 LT |
1176 | break; |
1177 | ||
1178 | default: | |
f705e6e4 AO |
1179 | ret = -EINVAL; |
1180 | break; | |
1da177e4 | 1181 | } |
3593cab5 | 1182 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
1183 | return ret; |
1184 | } | |
1185 | ||
16ef8def | 1186 | static long dvb_dvr_ioctl(struct file *file, |
f705e6e4 | 1187 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1188 | { |
16ef8def AB |
1189 | int ret; |
1190 | ||
1191 | lock_kernel(); | |
1192 | ret = dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl); | |
1193 | unlock_kernel(); | |
1194 | ||
1195 | return ret; | |
1da177e4 LT |
1196 | } |
1197 | ||
f705e6e4 | 1198 | static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait) |
1da177e4 | 1199 | { |
0c53c70f JS |
1200 | struct dvb_device *dvbdev = file->private_data; |
1201 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
1202 | unsigned int mask = 0; |
1203 | ||
46b4f7c1 | 1204 | dprintk("function : %s\n", __func__); |
1da177e4 LT |
1205 | |
1206 | poll_wait(file, &dmxdev->dvr_buffer.queue, wait); | |
1207 | ||
f705e6e4 | 1208 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
1da177e4 LT |
1209 | if (dmxdev->dvr_buffer.error) |
1210 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
1211 | ||
34731df2 | 1212 | if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer)) |
1da177e4 LT |
1213 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
1214 | } else | |
1215 | mask |= (POLLOUT | POLLWRNORM | POLLPRI); | |
1216 | ||
1217 | return mask; | |
1218 | } | |
1219 | ||
828c0950 | 1220 | static const struct file_operations dvb_dvr_fops = { |
f705e6e4 AO |
1221 | .owner = THIS_MODULE, |
1222 | .read = dvb_dvr_read, | |
1223 | .write = dvb_dvr_write, | |
16ef8def | 1224 | .unlocked_ioctl = dvb_dvr_ioctl, |
f705e6e4 AO |
1225 | .open = dvb_dvr_open, |
1226 | .release = dvb_dvr_release, | |
1227 | .poll = dvb_dvr_poll, | |
1da177e4 LT |
1228 | }; |
1229 | ||
1230 | static struct dvb_device dvbdev_dvr = { | |
f705e6e4 | 1231 | .priv = NULL, |
5e85bd05 | 1232 | .readers = 1, |
57861b43 | 1233 | .users = 1, |
f705e6e4 | 1234 | .fops = &dvb_dvr_fops |
1da177e4 LT |
1235 | }; |
1236 | ||
f705e6e4 | 1237 | int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) |
1da177e4 LT |
1238 | { |
1239 | int i; | |
1240 | ||
1241 | if (dmxdev->demux->open(dmxdev->demux) < 0) | |
1242 | return -EUSERS; | |
1243 | ||
f705e6e4 | 1244 | dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter)); |
1da177e4 LT |
1245 | if (!dmxdev->filter) |
1246 | return -ENOMEM; | |
1247 | ||
3593cab5 | 1248 | mutex_init(&dmxdev->mutex); |
1da177e4 | 1249 | spin_lock_init(&dmxdev->lock); |
f705e6e4 AO |
1250 | for (i = 0; i < dmxdev->filternum; i++) { |
1251 | dmxdev->filter[i].dev = dmxdev; | |
1252 | dmxdev->filter[i].buffer.data = NULL; | |
1253 | dvb_dmxdev_filter_state_set(&dmxdev->filter[i], | |
1254 | DMXDEV_STATE_FREE); | |
1da177e4 LT |
1255 | } |
1256 | ||
f705e6e4 AO |
1257 | dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, |
1258 | DVB_DEVICE_DEMUX); | |
1259 | dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, | |
1260 | dmxdev, DVB_DEVICE_DVR); | |
1da177e4 | 1261 | |
34731df2 | 1262 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192); |
1da177e4 LT |
1263 | |
1264 | return 0; | |
1265 | } | |
f705e6e4 | 1266 | |
1da177e4 LT |
1267 | EXPORT_SYMBOL(dvb_dmxdev_init); |
1268 | ||
f705e6e4 | 1269 | void dvb_dmxdev_release(struct dmxdev *dmxdev) |
1da177e4 | 1270 | { |
57861b43 MR |
1271 | dmxdev->exit=1; |
1272 | if (dmxdev->dvbdev->users > 1) { | |
1273 | wait_event(dmxdev->dvbdev->wait_queue, | |
1274 | dmxdev->dvbdev->users==1); | |
1275 | } | |
1276 | if (dmxdev->dvr_dvbdev->users > 1) { | |
1277 | wait_event(dmxdev->dvr_dvbdev->wait_queue, | |
1278 | dmxdev->dvr_dvbdev->users==1); | |
1279 | } | |
1280 | ||
1da177e4 LT |
1281 | dvb_unregister_device(dmxdev->dvbdev); |
1282 | dvb_unregister_device(dmxdev->dvr_dvbdev); | |
1283 | ||
1284 | vfree(dmxdev->filter); | |
f705e6e4 | 1285 | dmxdev->filter = NULL; |
1da177e4 LT |
1286 | dmxdev->demux->close(dmxdev->demux); |
1287 | } | |
f705e6e4 | 1288 | |
1da177e4 | 1289 | EXPORT_SYMBOL(dvb_dmxdev_release); |