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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * dmxdev.c - DVB demultiplexer device | |
3 | * | |
f705e6e4 AO |
4 | * Copyright (C) 2000 Ralph Metzler & Marcus Metzler |
5 | * for convergence integrated media GmbH | |
1da177e4 LT |
6 | * |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public License | |
9 | * as published by the Free Software Foundation; either version 2.1 | |
10 | * of the License, or (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20 | * | |
21 | */ | |
22 | ||
23 | #include <linux/spinlock.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/vmalloc.h> | |
26 | #include <linux/module.h> | |
1da177e4 LT |
27 | #include <linux/poll.h> |
28 | #include <linux/ioctl.h> | |
29 | #include <linux/wait.h> | |
30 | #include <asm/uaccess.h> | |
31 | #include <asm/system.h> | |
1da177e4 LT |
32 | #include "dmxdev.h" |
33 | ||
34 | static int debug; | |
35 | ||
36 | module_param(debug, int, 0644); | |
37 | MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); | |
38 | ||
39 | #define dprintk if (debug) printk | |
40 | ||
34731df2 AO |
41 | static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf, |
42 | const u8 *src, size_t len) | |
1da177e4 | 43 | { |
34731df2 | 44 | ssize_t free; |
1da177e4 LT |
45 | |
46 | if (!len) | |
47 | return 0; | |
48 | if (!buf->data) | |
49 | return 0; | |
50 | ||
34731df2 AO |
51 | free = dvb_ringbuffer_free(buf); |
52 | if (len > free) { | |
1da177e4 | 53 | dprintk("dmxdev: buffer overflow\n"); |
34731df2 | 54 | return -EOVERFLOW; |
1da177e4 | 55 | } |
34731df2 AO |
56 | |
57 | return dvb_ringbuffer_write(buf, src, len); | |
1da177e4 LT |
58 | } |
59 | ||
34731df2 | 60 | static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src, |
f705e6e4 AO |
61 | int non_blocking, char __user *buf, |
62 | size_t count, loff_t *ppos) | |
1da177e4 | 63 | { |
34731df2 AO |
64 | size_t todo; |
65 | ssize_t avail; | |
66 | ssize_t ret = 0; | |
1da177e4 LT |
67 | |
68 | if (!src->data) | |
69 | return 0; | |
70 | ||
34731df2 AO |
71 | if (src->error) { |
72 | ret = src->error; | |
73 | dvb_ringbuffer_flush(src); | |
74 | return ret; | |
1da177e4 LT |
75 | } |
76 | ||
34731df2 AO |
77 | for (todo = count; todo > 0; todo -= ret) { |
78 | if (non_blocking && dvb_ringbuffer_empty(src)) { | |
79 | ret = -EWOULDBLOCK; | |
80 | break; | |
81 | } | |
1da177e4 | 82 | |
34731df2 AO |
83 | ret = wait_event_interruptible(src->queue, |
84 | !dvb_ringbuffer_empty(src) || | |
85 | (src->error != 0)); | |
86 | if (ret < 0) | |
87 | break; | |
1da177e4 | 88 | |
34731df2 AO |
89 | if (src->error) { |
90 | ret = src->error; | |
91 | dvb_ringbuffer_flush(src); | |
92 | break; | |
1da177e4 LT |
93 | } |
94 | ||
34731df2 | 95 | avail = dvb_ringbuffer_avail(src); |
f705e6e4 AO |
96 | if (avail > todo) |
97 | avail = todo; | |
34731df2 | 98 | |
b0ba0e3a | 99 | ret = dvb_ringbuffer_read_user(src, buf, avail); |
34731df2 AO |
100 | if (ret < 0) |
101 | break; | |
102 | ||
103 | buf += ret; | |
1da177e4 | 104 | } |
34731df2 AO |
105 | |
106 | return (count - todo) ? (count - todo) : ret; | |
1da177e4 LT |
107 | } |
108 | ||
f705e6e4 | 109 | static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type) |
1da177e4 LT |
110 | { |
111 | struct list_head *head, *pos; | |
112 | ||
f705e6e4 | 113 | head = demux->get_frontends(demux); |
1da177e4 LT |
114 | if (!head) |
115 | return NULL; | |
116 | list_for_each(pos, head) | |
f705e6e4 | 117 | if (DMX_FE_ENTRY(pos)->source == type) |
1da177e4 LT |
118 | return DMX_FE_ENTRY(pos); |
119 | ||
120 | return NULL; | |
121 | } | |
122 | ||
1da177e4 LT |
123 | static int dvb_dvr_open(struct inode *inode, struct file *file) |
124 | { | |
0c53c70f JS |
125 | struct dvb_device *dvbdev = file->private_data; |
126 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
127 | struct dmx_frontend *front; |
128 | ||
46b4f7c1 | 129 | dprintk("function : %s\n", __func__); |
1da177e4 | 130 | |
3593cab5 | 131 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
132 | return -ERESTARTSYS; |
133 | ||
57861b43 MR |
134 | if (dmxdev->exit) { |
135 | mutex_unlock(&dmxdev->mutex); | |
136 | return -ENODEV; | |
137 | } | |
138 | ||
f705e6e4 AO |
139 | if ((file->f_flags & O_ACCMODE) == O_RDWR) { |
140 | if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) { | |
3593cab5 | 141 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
142 | return -EOPNOTSUPP; |
143 | } | |
144 | } | |
145 | ||
f705e6e4 | 146 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
5e85bd05 TP |
147 | void *mem; |
148 | if (!dvbdev->readers) { | |
149 | mutex_unlock(&dmxdev->mutex); | |
150 | return -EBUSY; | |
151 | } | |
152 | mem = vmalloc(DVR_BUFFER_SIZE); | |
34731df2 | 153 | if (!mem) { |
f705e6e4 AO |
154 | mutex_unlock(&dmxdev->mutex); |
155 | return -ENOMEM; | |
156 | } | |
34731df2 | 157 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE); |
5e85bd05 | 158 | dvbdev->readers--; |
1da177e4 LT |
159 | } |
160 | ||
f705e6e4 AO |
161 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
162 | dmxdev->dvr_orig_fe = dmxdev->demux->frontend; | |
1da177e4 LT |
163 | |
164 | if (!dmxdev->demux->write) { | |
3593cab5 | 165 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
166 | return -EOPNOTSUPP; |
167 | } | |
168 | ||
f705e6e4 | 169 | front = get_fe(dmxdev->demux, DMX_MEMORY_FE); |
1da177e4 LT |
170 | |
171 | if (!front) { | |
3593cab5 | 172 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
173 | return -EINVAL; |
174 | } | |
175 | dmxdev->demux->disconnect_frontend(dmxdev->demux); | |
176 | dmxdev->demux->connect_frontend(dmxdev->demux, front); | |
177 | } | |
57861b43 | 178 | dvbdev->users++; |
3593cab5 | 179 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
180 | return 0; |
181 | } | |
182 | ||
183 | static int dvb_dvr_release(struct inode *inode, struct file *file) | |
184 | { | |
0c53c70f JS |
185 | struct dvb_device *dvbdev = file->private_data; |
186 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 | 187 | |
c2788502 | 188 | mutex_lock(&dmxdev->mutex); |
1da177e4 | 189 | |
f705e6e4 | 190 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
1da177e4 LT |
191 | dmxdev->demux->disconnect_frontend(dmxdev->demux); |
192 | dmxdev->demux->connect_frontend(dmxdev->demux, | |
193 | dmxdev->dvr_orig_fe); | |
194 | } | |
f705e6e4 | 195 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
5e85bd05 | 196 | dvbdev->readers++; |
1da177e4 | 197 | if (dmxdev->dvr_buffer.data) { |
f705e6e4 | 198 | void *mem = dmxdev->dvr_buffer.data; |
1da177e4 LT |
199 | mb(); |
200 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 201 | dmxdev->dvr_buffer.data = NULL; |
1da177e4 LT |
202 | spin_unlock_irq(&dmxdev->lock); |
203 | vfree(mem); | |
204 | } | |
205 | } | |
57861b43 MR |
206 | /* TODO */ |
207 | dvbdev->users--; | |
208 | if(dvbdev->users==-1 && dmxdev->exit==1) { | |
209 | fops_put(file->f_op); | |
210 | file->f_op = NULL; | |
211 | mutex_unlock(&dmxdev->mutex); | |
212 | wake_up(&dvbdev->wait_queue); | |
213 | } else | |
214 | mutex_unlock(&dmxdev->mutex); | |
215 | ||
1da177e4 LT |
216 | return 0; |
217 | } | |
218 | ||
219 | static ssize_t dvb_dvr_write(struct file *file, const char __user *buf, | |
f705e6e4 | 220 | size_t count, loff_t *ppos) |
1da177e4 | 221 | { |
0c53c70f JS |
222 | struct dvb_device *dvbdev = file->private_data; |
223 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
224 | int ret; |
225 | ||
226 | if (!dmxdev->demux->write) | |
227 | return -EOPNOTSUPP; | |
f705e6e4 | 228 | if ((file->f_flags & O_ACCMODE) != O_WRONLY) |
1da177e4 | 229 | return -EINVAL; |
3593cab5 | 230 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 | 231 | return -ERESTARTSYS; |
57861b43 MR |
232 | |
233 | if (dmxdev->exit) { | |
234 | mutex_unlock(&dmxdev->mutex); | |
235 | return -ENODEV; | |
236 | } | |
f705e6e4 | 237 | ret = dmxdev->demux->write(dmxdev->demux, buf, count); |
3593cab5 | 238 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
239 | return ret; |
240 | } | |
241 | ||
242 | static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count, | |
f705e6e4 | 243 | loff_t *ppos) |
1da177e4 | 244 | { |
0c53c70f JS |
245 | struct dvb_device *dvbdev = file->private_data; |
246 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
247 | int ret; |
248 | ||
57861b43 MR |
249 | if (dmxdev->exit) { |
250 | mutex_unlock(&dmxdev->mutex); | |
251 | return -ENODEV; | |
252 | } | |
253 | ||
3593cab5 | 254 | //mutex_lock(&dmxdev->mutex); |
f705e6e4 AO |
255 | ret = dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer, |
256 | file->f_flags & O_NONBLOCK, | |
257 | buf, count, ppos); | |
3593cab5 | 258 | //mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
259 | return ret; |
260 | } | |
261 | ||
a095be4b AO |
262 | static int dvb_dvr_set_buffer_size(struct dmxdev *dmxdev, |
263 | unsigned long size) | |
264 | { | |
265 | struct dvb_ringbuffer *buf = &dmxdev->dvr_buffer; | |
266 | void *newmem; | |
267 | void *oldmem; | |
268 | ||
269 | dprintk("function : %s\n", __func__); | |
270 | ||
271 | if (buf->size == size) | |
272 | return 0; | |
273 | if (!size) | |
274 | return -EINVAL; | |
275 | ||
276 | newmem = vmalloc(size); | |
277 | if (!newmem) | |
278 | return -ENOMEM; | |
279 | ||
280 | oldmem = buf->data; | |
281 | ||
282 | spin_lock_irq(&dmxdev->lock); | |
283 | buf->data = newmem; | |
284 | buf->size = size; | |
285 | ||
286 | /* reset and not flush in case the buffer shrinks */ | |
287 | dvb_ringbuffer_reset(buf); | |
288 | spin_unlock_irq(&dmxdev->lock); | |
289 | ||
290 | vfree(oldmem); | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
f705e6e4 AO |
295 | static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter |
296 | *dmxdevfilter, int state) | |
1da177e4 LT |
297 | { |
298 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 299 | dmxdevfilter->state = state; |
1da177e4 LT |
300 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
301 | } | |
302 | ||
f705e6e4 AO |
303 | static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, |
304 | unsigned long size) | |
1da177e4 | 305 | { |
34731df2 | 306 | struct dvb_ringbuffer *buf = &dmxdevfilter->buffer; |
a095be4b AO |
307 | void *newmem; |
308 | void *oldmem; | |
1da177e4 | 309 | |
f705e6e4 | 310 | if (buf->size == size) |
1da177e4 | 311 | return 0; |
a095be4b AO |
312 | if (!size) |
313 | return -EINVAL; | |
f705e6e4 | 314 | if (dmxdevfilter->state >= DMXDEV_STATE_GO) |
1da177e4 | 315 | return -EBUSY; |
a095be4b AO |
316 | |
317 | newmem = vmalloc(size); | |
318 | if (!newmem) | |
319 | return -ENOMEM; | |
320 | ||
321 | oldmem = buf->data; | |
322 | ||
1da177e4 | 323 | spin_lock_irq(&dmxdevfilter->dev->lock); |
a095be4b | 324 | buf->data = newmem; |
f705e6e4 | 325 | buf->size = size; |
48c01a9c AO |
326 | |
327 | /* reset and not flush in case the buffer shrinks */ | |
328 | dvb_ringbuffer_reset(buf); | |
1da177e4 | 329 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
1da177e4 | 330 | |
a095be4b AO |
331 | vfree(oldmem); |
332 | ||
1da177e4 LT |
333 | return 0; |
334 | } | |
335 | ||
336 | static void dvb_dmxdev_filter_timeout(unsigned long data) | |
337 | { | |
f705e6e4 | 338 | struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data; |
1da177e4 | 339 | |
f705e6e4 | 340 | dmxdevfilter->buffer.error = -ETIMEDOUT; |
1da177e4 | 341 | spin_lock_irq(&dmxdevfilter->dev->lock); |
f705e6e4 | 342 | dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT; |
1da177e4 LT |
343 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
344 | wake_up(&dmxdevfilter->buffer.queue); | |
345 | } | |
346 | ||
347 | static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter) | |
348 | { | |
f705e6e4 | 349 | struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec; |
1da177e4 LT |
350 | |
351 | del_timer(&dmxdevfilter->timer); | |
352 | if (para->timeout) { | |
f705e6e4 AO |
353 | dmxdevfilter->timer.function = dvb_dmxdev_filter_timeout; |
354 | dmxdevfilter->timer.data = (unsigned long)dmxdevfilter; | |
355 | dmxdevfilter->timer.expires = | |
356 | jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000; | |
1da177e4 LT |
357 | add_timer(&dmxdevfilter->timer); |
358 | } | |
359 | } | |
360 | ||
361 | static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
362 | const u8 *buffer2, size_t buffer2_len, |
363 | struct dmx_section_filter *filter, | |
364 | enum dmx_success success) | |
1da177e4 | 365 | { |
0c53c70f | 366 | struct dmxdev_filter *dmxdevfilter = filter->priv; |
dda06a8e | 367 | unsigned long flags; |
1da177e4 LT |
368 | int ret; |
369 | ||
370 | if (dmxdevfilter->buffer.error) { | |
371 | wake_up(&dmxdevfilter->buffer.queue); | |
372 | return 0; | |
373 | } | |
dda06a8e | 374 | spin_lock_irqsave(&dmxdevfilter->dev->lock, flags); |
f705e6e4 | 375 | if (dmxdevfilter->state != DMXDEV_STATE_GO) { |
dda06a8e | 376 | spin_unlock_irqrestore(&dmxdevfilter->dev->lock, flags); |
1da177e4 LT |
377 | return 0; |
378 | } | |
379 | del_timer(&dmxdevfilter->timer); | |
380 | dprintk("dmxdev: section callback %02x %02x %02x %02x %02x %02x\n", | |
381 | buffer1[0], buffer1[1], | |
f705e6e4 AO |
382 | buffer1[2], buffer1[3], buffer1[4], buffer1[5]); |
383 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1, | |
384 | buffer1_len); | |
385 | if (ret == buffer1_len) { | |
386 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2, | |
387 | buffer2_len); | |
1da177e4 | 388 | } |
f705e6e4 | 389 | if (ret < 0) { |
34731df2 AO |
390 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); |
391 | dmxdevfilter->buffer.error = ret; | |
1da177e4 | 392 | } |
f705e6e4 AO |
393 | if (dmxdevfilter->params.sec.flags & DMX_ONESHOT) |
394 | dmxdevfilter->state = DMXDEV_STATE_DONE; | |
dda06a8e | 395 | spin_unlock_irqrestore(&dmxdevfilter->dev->lock, flags); |
1da177e4 LT |
396 | wake_up(&dmxdevfilter->buffer.queue); |
397 | return 0; | |
398 | } | |
399 | ||
400 | static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
401 | const u8 *buffer2, size_t buffer2_len, |
402 | struct dmx_ts_feed *feed, | |
403 | enum dmx_success success) | |
1da177e4 | 404 | { |
0c53c70f | 405 | struct dmxdev_filter *dmxdevfilter = feed->priv; |
34731df2 | 406 | struct dvb_ringbuffer *buffer; |
dda06a8e | 407 | unsigned long flags; |
1da177e4 LT |
408 | int ret; |
409 | ||
dda06a8e | 410 | spin_lock_irqsave(&dmxdevfilter->dev->lock, flags); |
f705e6e4 | 411 | if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) { |
dda06a8e | 412 | spin_unlock_irqrestore(&dmxdevfilter->dev->lock, flags); |
1da177e4 LT |
413 | return 0; |
414 | } | |
415 | ||
b01cd937 PH |
416 | if (dmxdevfilter->params.pes.output == DMX_OUT_TAP |
417 | || dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP) | |
f705e6e4 | 418 | buffer = &dmxdevfilter->buffer; |
1da177e4 | 419 | else |
f705e6e4 | 420 | buffer = &dmxdevfilter->dev->dvr_buffer; |
1da177e4 | 421 | if (buffer->error) { |
dda06a8e | 422 | spin_unlock_irqrestore(&dmxdevfilter->dev->lock, flags); |
1da177e4 LT |
423 | wake_up(&buffer->queue); |
424 | return 0; | |
425 | } | |
f705e6e4 AO |
426 | ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len); |
427 | if (ret == buffer1_len) | |
428 | ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len); | |
429 | if (ret < 0) { | |
34731df2 AO |
430 | dvb_ringbuffer_flush(buffer); |
431 | buffer->error = ret; | |
1da177e4 | 432 | } |
dda06a8e | 433 | spin_unlock_irqrestore(&dmxdevfilter->dev->lock, flags); |
1da177e4 LT |
434 | wake_up(&buffer->queue); |
435 | return 0; | |
436 | } | |
437 | ||
1da177e4 | 438 | /* stop feed but only mark the specified filter as stopped (state set) */ |
1da177e4 LT |
439 | static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter) |
440 | { | |
441 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
442 | ||
443 | switch (dmxdevfilter->type) { | |
444 | case DMXDEV_TYPE_SEC: | |
445 | del_timer(&dmxdevfilter->timer); | |
446 | dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec); | |
447 | break; | |
448 | case DMXDEV_TYPE_PES: | |
449 | dmxdevfilter->feed.ts->stop_filtering(dmxdevfilter->feed.ts); | |
450 | break; | |
451 | default: | |
452 | return -EINVAL; | |
453 | } | |
454 | return 0; | |
455 | } | |
456 | ||
1da177e4 | 457 | /* start feed associated with the specified filter */ |
1da177e4 LT |
458 | static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter) |
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 LT |
465 | case DMXDEV_TYPE_PES: |
466 | return filter->feed.ts->start_filtering(filter->feed.ts); | |
1da177e4 LT |
467 | default: |
468 | return -EINVAL; | |
469 | } | |
470 | ||
471 | return 0; | |
472 | } | |
473 | ||
1da177e4 LT |
474 | /* restart section feed if it has filters left associated with it, |
475 | otherwise release the feed */ | |
1da177e4 LT |
476 | static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter) |
477 | { | |
478 | int i; | |
479 | struct dmxdev *dmxdev = filter->dev; | |
480 | u16 pid = filter->params.sec.pid; | |
481 | ||
f705e6e4 AO |
482 | for (i = 0; i < dmxdev->filternum; i++) |
483 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && | |
484 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && | |
485 | dmxdev->filter[i].params.sec.pid == pid) { | |
1da177e4 LT |
486 | dvb_dmxdev_feed_start(&dmxdev->filter[i]); |
487 | return 0; | |
488 | } | |
489 | ||
f705e6e4 AO |
490 | filter->dev->demux->release_section_feed(dmxdev->demux, |
491 | filter->feed.sec); | |
1da177e4 LT |
492 | |
493 | return 0; | |
494 | } | |
495 | ||
496 | static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter) | |
497 | { | |
f705e6e4 | 498 | if (dmxdevfilter->state < DMXDEV_STATE_GO) |
1da177e4 LT |
499 | return 0; |
500 | ||
501 | switch (dmxdevfilter->type) { | |
502 | case DMXDEV_TYPE_SEC: | |
503 | if (!dmxdevfilter->feed.sec) | |
504 | break; | |
505 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
506 | if (dmxdevfilter->filter.sec) | |
507 | dmxdevfilter->feed.sec-> | |
f705e6e4 AO |
508 | release_filter(dmxdevfilter->feed.sec, |
509 | dmxdevfilter->filter.sec); | |
1da177e4 | 510 | dvb_dmxdev_feed_restart(dmxdevfilter); |
f705e6e4 | 511 | dmxdevfilter->feed.sec = NULL; |
1da177e4 LT |
512 | break; |
513 | case DMXDEV_TYPE_PES: | |
514 | if (!dmxdevfilter->feed.ts) | |
515 | break; | |
516 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
517 | dmxdevfilter->dev->demux-> | |
f705e6e4 AO |
518 | release_ts_feed(dmxdevfilter->dev->demux, |
519 | dmxdevfilter->feed.ts); | |
520 | dmxdevfilter->feed.ts = NULL; | |
1da177e4 LT |
521 | break; |
522 | default: | |
f705e6e4 | 523 | if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED) |
1da177e4 LT |
524 | return 0; |
525 | return -EINVAL; | |
526 | } | |
34731df2 AO |
527 | |
528 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); | |
1da177e4 LT |
529 | return 0; |
530 | } | |
531 | ||
532 | static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter) | |
533 | { | |
f705e6e4 | 534 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
535 | return 0; |
536 | ||
f705e6e4 | 537 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 LT |
538 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
539 | return 0; | |
540 | } | |
541 | ||
542 | static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) | |
543 | { | |
544 | struct dmxdev *dmxdev = filter->dev; | |
545 | void *mem; | |
546 | int ret, i; | |
547 | ||
548 | if (filter->state < DMXDEV_STATE_SET) | |
549 | return -EINVAL; | |
550 | ||
551 | if (filter->state >= DMXDEV_STATE_GO) | |
552 | dvb_dmxdev_filter_stop(filter); | |
553 | ||
34731df2 | 554 | if (!filter->buffer.data) { |
1da177e4 | 555 | mem = vmalloc(filter->buffer.size); |
34731df2 AO |
556 | if (!mem) |
557 | return -ENOMEM; | |
1da177e4 | 558 | spin_lock_irq(&filter->dev->lock); |
f705e6e4 | 559 | filter->buffer.data = mem; |
1da177e4 | 560 | spin_unlock_irq(&filter->dev->lock); |
1da177e4 LT |
561 | } |
562 | ||
34731df2 | 563 | dvb_ringbuffer_flush(&filter->buffer); |
1da177e4 LT |
564 | |
565 | switch (filter->type) { | |
566 | case DMXDEV_TYPE_SEC: | |
567 | { | |
f705e6e4 AO |
568 | struct dmx_sct_filter_params *para = &filter->params.sec; |
569 | struct dmx_section_filter **secfilter = &filter->filter.sec; | |
570 | struct dmx_section_feed **secfeed = &filter->feed.sec; | |
571 | ||
572 | *secfilter = NULL; | |
573 | *secfeed = NULL; | |
1da177e4 | 574 | |
1da177e4 LT |
575 | |
576 | /* find active filter/feed with same PID */ | |
f705e6e4 | 577 | for (i = 0; i < dmxdev->filternum; i++) { |
1da177e4 | 578 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && |
09794a6f AO |
579 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && |
580 | dmxdev->filter[i].params.sec.pid == para->pid) { | |
1da177e4 LT |
581 | *secfeed = dmxdev->filter[i].feed.sec; |
582 | break; | |
583 | } | |
584 | } | |
585 | ||
586 | /* if no feed found, try to allocate new one */ | |
587 | if (!*secfeed) { | |
f705e6e4 AO |
588 | ret = dmxdev->demux->allocate_section_feed(dmxdev->demux, |
589 | secfeed, | |
590 | dvb_dmxdev_section_callback); | |
591 | if (ret < 0) { | |
592 | printk("DVB (%s): could not alloc feed\n", | |
46b4f7c1 | 593 | __func__); |
1da177e4 LT |
594 | return ret; |
595 | } | |
596 | ||
f705e6e4 AO |
597 | ret = (*secfeed)->set(*secfeed, para->pid, 32768, |
598 | (para->flags & DMX_CHECK_CRC) ? 1 : 0); | |
599 | if (ret < 0) { | |
600 | printk("DVB (%s): could not set feed\n", | |
46b4f7c1 | 601 | __func__); |
1da177e4 LT |
602 | dvb_dmxdev_feed_restart(filter); |
603 | return ret; | |
604 | } | |
605 | } else { | |
606 | dvb_dmxdev_feed_stop(filter); | |
607 | } | |
608 | ||
f705e6e4 | 609 | ret = (*secfeed)->allocate_filter(*secfeed, secfilter); |
1da177e4 LT |
610 | if (ret < 0) { |
611 | dvb_dmxdev_feed_restart(filter); | |
612 | filter->feed.sec->start_filtering(*secfeed); | |
f705e6e4 | 613 | dprintk("could not get filter\n"); |
1da177e4 LT |
614 | return ret; |
615 | } | |
616 | ||
617 | (*secfilter)->priv = filter; | |
618 | ||
619 | memcpy(&((*secfilter)->filter_value[3]), | |
f705e6e4 | 620 | &(para->filter.filter[1]), DMX_FILTER_SIZE - 1); |
1da177e4 | 621 | memcpy(&(*secfilter)->filter_mask[3], |
f705e6e4 | 622 | ¶->filter.mask[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 623 | memcpy(&(*secfilter)->filter_mode[3], |
f705e6e4 | 624 | ¶->filter.mode[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 625 | |
f705e6e4 AO |
626 | (*secfilter)->filter_value[0] = para->filter.filter[0]; |
627 | (*secfilter)->filter_mask[0] = para->filter.mask[0]; | |
628 | (*secfilter)->filter_mode[0] = para->filter.mode[0]; | |
629 | (*secfilter)->filter_mask[1] = 0; | |
630 | (*secfilter)->filter_mask[2] = 0; | |
1da177e4 LT |
631 | |
632 | filter->todo = 0; | |
633 | ||
f705e6e4 | 634 | ret = filter->feed.sec->start_filtering(filter->feed.sec); |
1da177e4 LT |
635 | if (ret < 0) |
636 | return ret; | |
637 | ||
638 | dvb_dmxdev_filter_timer(filter); | |
639 | break; | |
640 | } | |
1da177e4 LT |
641 | case DMXDEV_TYPE_PES: |
642 | { | |
643 | struct timespec timeout = { 0 }; | |
644 | struct dmx_pes_filter_params *para = &filter->params.pes; | |
645 | dmx_output_t otype; | |
1da177e4 LT |
646 | int ts_type; |
647 | enum dmx_ts_pes ts_pes; | |
648 | struct dmx_ts_feed **tsfeed = &filter->feed.ts; | |
649 | ||
650 | filter->feed.ts = NULL; | |
f705e6e4 | 651 | otype = para->output; |
1da177e4 | 652 | |
f705e6e4 | 653 | ts_pes = (enum dmx_ts_pes)para->pes_type; |
1da177e4 | 654 | |
f705e6e4 AO |
655 | if (ts_pes < DMX_PES_OTHER) |
656 | ts_type = TS_DECODER; | |
1da177e4 | 657 | else |
f705e6e4 | 658 | ts_type = 0; |
1da177e4 | 659 | |
4a24ce3a | 660 | if (otype == DMX_OUT_TS_TAP) |
1da177e4 | 661 | ts_type |= TS_PACKET; |
4a24ce3a AO |
662 | else if (otype == DMX_OUT_TSDEMUX_TAP) |
663 | ts_type |= TS_PACKET | TS_DEMUX; | |
664 | else if (otype == DMX_OUT_TAP) | |
665 | ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY; | |
1da177e4 | 666 | |
f705e6e4 AO |
667 | ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, |
668 | tsfeed, | |
669 | dvb_dmxdev_ts_callback); | |
670 | if (ret < 0) | |
1da177e4 LT |
671 | return ret; |
672 | ||
f705e6e4 | 673 | (*tsfeed)->priv = filter; |
1da177e4 LT |
674 | |
675 | ret = (*tsfeed)->set(*tsfeed, para->pid, ts_type, ts_pes, | |
5d2cd163 | 676 | 32768, timeout); |
1da177e4 | 677 | if (ret < 0) { |
f705e6e4 AO |
678 | dmxdev->demux->release_ts_feed(dmxdev->demux, |
679 | *tsfeed); | |
1da177e4 LT |
680 | return ret; |
681 | } | |
682 | ||
683 | ret = filter->feed.ts->start_filtering(filter->feed.ts); | |
76197924 | 684 | if (ret < 0) { |
f705e6e4 AO |
685 | dmxdev->demux->release_ts_feed(dmxdev->demux, |
686 | *tsfeed); | |
1da177e4 | 687 | return ret; |
76197924 | 688 | } |
1da177e4 LT |
689 | |
690 | break; | |
691 | } | |
692 | default: | |
693 | return -EINVAL; | |
694 | } | |
695 | ||
696 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); | |
697 | return 0; | |
698 | } | |
699 | ||
700 | static int dvb_demux_open(struct inode *inode, struct file *file) | |
701 | { | |
0c53c70f JS |
702 | struct dvb_device *dvbdev = file->private_data; |
703 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
704 | int i; |
705 | struct dmxdev_filter *dmxdevfilter; | |
706 | ||
707 | if (!dmxdev->filter) | |
708 | return -EINVAL; | |
709 | ||
3593cab5 | 710 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
711 | return -ERESTARTSYS; |
712 | ||
f705e6e4 AO |
713 | for (i = 0; i < dmxdev->filternum; i++) |
714 | if (dmxdev->filter[i].state == DMXDEV_STATE_FREE) | |
1da177e4 LT |
715 | break; |
716 | ||
f705e6e4 | 717 | if (i == dmxdev->filternum) { |
3593cab5 | 718 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
719 | return -EMFILE; |
720 | } | |
721 | ||
f705e6e4 | 722 | dmxdevfilter = &dmxdev->filter[i]; |
3593cab5 | 723 | mutex_init(&dmxdevfilter->mutex); |
f705e6e4 | 724 | file->private_data = dmxdevfilter; |
1da177e4 | 725 | |
34731df2 | 726 | dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192); |
f705e6e4 | 727 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 | 728 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
f705e6e4 | 729 | dmxdevfilter->feed.ts = NULL; |
1da177e4 LT |
730 | init_timer(&dmxdevfilter->timer); |
731 | ||
57861b43 MR |
732 | dvbdev->users++; |
733 | ||
3593cab5 | 734 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
735 | return 0; |
736 | } | |
737 | ||
f705e6e4 AO |
738 | static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, |
739 | struct dmxdev_filter *dmxdevfilter) | |
1da177e4 | 740 | { |
c2788502 SA |
741 | mutex_lock(&dmxdev->mutex); |
742 | mutex_lock(&dmxdevfilter->mutex); | |
1da177e4 LT |
743 | |
744 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
745 | dvb_dmxdev_filter_reset(dmxdevfilter); | |
746 | ||
747 | if (dmxdevfilter->buffer.data) { | |
f705e6e4 | 748 | void *mem = dmxdevfilter->buffer.data; |
1da177e4 LT |
749 | |
750 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 751 | dmxdevfilter->buffer.data = NULL; |
1da177e4 LT |
752 | spin_unlock_irq(&dmxdev->lock); |
753 | vfree(mem); | |
754 | } | |
755 | ||
756 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE); | |
757 | wake_up(&dmxdevfilter->buffer.queue); | |
3593cab5 IM |
758 | mutex_unlock(&dmxdevfilter->mutex); |
759 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
760 | return 0; |
761 | } | |
762 | ||
763 | static inline void invert_mode(dmx_filter_t *filter) | |
764 | { | |
765 | int i; | |
766 | ||
f705e6e4 AO |
767 | for (i = 0; i < DMX_FILTER_SIZE; i++) |
768 | filter->mode[i] ^= 0xff; | |
1da177e4 LT |
769 | } |
770 | ||
1da177e4 | 771 | static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev, |
f705e6e4 AO |
772 | struct dmxdev_filter *dmxdevfilter, |
773 | struct dmx_sct_filter_params *params) | |
1da177e4 | 774 | { |
46b4f7c1 | 775 | dprintk("function : %s\n", __func__); |
1da177e4 LT |
776 | |
777 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
778 | ||
f705e6e4 | 779 | dmxdevfilter->type = DMXDEV_TYPE_SEC; |
1da177e4 LT |
780 | memcpy(&dmxdevfilter->params.sec, |
781 | params, sizeof(struct dmx_sct_filter_params)); | |
782 | invert_mode(&dmxdevfilter->params.sec.filter); | |
783 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
784 | ||
f705e6e4 | 785 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
786 | return dvb_dmxdev_filter_start(dmxdevfilter); |
787 | ||
788 | return 0; | |
789 | } | |
790 | ||
791 | static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev, | |
f705e6e4 AO |
792 | struct dmxdev_filter *dmxdevfilter, |
793 | struct dmx_pes_filter_params *params) | |
1da177e4 LT |
794 | { |
795 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
796 | ||
f705e6e4 | 797 | if (params->pes_type > DMX_PES_OTHER || params->pes_type < 0) |
1da177e4 LT |
798 | return -EINVAL; |
799 | ||
f705e6e4 AO |
800 | dmxdevfilter->type = DMXDEV_TYPE_PES; |
801 | memcpy(&dmxdevfilter->params, params, | |
802 | sizeof(struct dmx_pes_filter_params)); | |
1da177e4 LT |
803 | |
804 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
805 | ||
f705e6e4 | 806 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
807 | return dvb_dmxdev_filter_start(dmxdevfilter); |
808 | ||
809 | return 0; | |
810 | } | |
811 | ||
812 | static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil, | |
f705e6e4 AO |
813 | struct file *file, char __user *buf, |
814 | size_t count, loff_t *ppos) | |
1da177e4 LT |
815 | { |
816 | int result, hcount; | |
f705e6e4 AO |
817 | int done = 0; |
818 | ||
819 | if (dfil->todo <= 0) { | |
820 | hcount = 3 + dfil->todo; | |
821 | if (hcount > count) | |
822 | hcount = count; | |
823 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
824 | file->f_flags & O_NONBLOCK, | |
825 | buf, hcount, ppos); | |
826 | if (result < 0) { | |
827 | dfil->todo = 0; | |
1da177e4 LT |
828 | return result; |
829 | } | |
f705e6e4 | 830 | if (copy_from_user(dfil->secheader - dfil->todo, buf, result)) |
1da177e4 | 831 | return -EFAULT; |
f705e6e4 AO |
832 | buf += result; |
833 | done = result; | |
834 | count -= result; | |
835 | dfil->todo -= result; | |
836 | if (dfil->todo > -3) | |
1da177e4 | 837 | return done; |
f705e6e4 | 838 | dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff; |
1da177e4 LT |
839 | if (!count) |
840 | return done; | |
841 | } | |
f705e6e4 AO |
842 | if (count > dfil->todo) |
843 | count = dfil->todo; | |
844 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
845 | file->f_flags & O_NONBLOCK, | |
846 | buf, count, ppos); | |
847 | if (result < 0) | |
1da177e4 | 848 | return result; |
f705e6e4 AO |
849 | dfil->todo -= result; |
850 | return (result + done); | |
1da177e4 LT |
851 | } |
852 | ||
1da177e4 | 853 | static ssize_t |
f705e6e4 AO |
854 | dvb_demux_read(struct file *file, char __user *buf, size_t count, |
855 | loff_t *ppos) | |
1da177e4 | 856 | { |
f705e6e4 AO |
857 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
858 | int ret; | |
1da177e4 | 859 | |
3593cab5 | 860 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) |
1da177e4 LT |
861 | return -ERESTARTSYS; |
862 | ||
f705e6e4 AO |
863 | if (dmxdevfilter->type == DMXDEV_TYPE_SEC) |
864 | ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos); | |
1da177e4 | 865 | else |
f705e6e4 AO |
866 | ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer, |
867 | file->f_flags & O_NONBLOCK, | |
868 | buf, count, ppos); | |
1da177e4 | 869 | |
3593cab5 | 870 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
871 | return ret; |
872 | } | |
873 | ||
1da177e4 LT |
874 | static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, |
875 | unsigned int cmd, void *parg) | |
876 | { | |
3ec4a307 | 877 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
f705e6e4 AO |
878 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
879 | unsigned long arg = (unsigned long)parg; | |
880 | int ret = 0; | |
1da177e4 | 881 | |
3593cab5 | 882 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
883 | return -ERESTARTSYS; |
884 | ||
885 | switch (cmd) { | |
886 | case DMX_START: | |
3593cab5 IM |
887 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
888 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
889 | return -ERESTARTSYS; |
890 | } | |
f705e6e4 | 891 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
892 | ret = -EINVAL; |
893 | else | |
894 | ret = dvb_dmxdev_filter_start(dmxdevfilter); | |
3593cab5 | 895 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
896 | break; |
897 | ||
898 | case DMX_STOP: | |
3593cab5 IM |
899 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
900 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
901 | return -ERESTARTSYS; |
902 | } | |
f705e6e4 | 903 | ret = dvb_dmxdev_filter_stop(dmxdevfilter); |
3593cab5 | 904 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
905 | break; |
906 | ||
907 | case DMX_SET_FILTER: | |
3593cab5 IM |
908 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
909 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
910 | return -ERESTARTSYS; |
911 | } | |
f705e6e4 | 912 | ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 913 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
914 | break; |
915 | ||
916 | case DMX_SET_PES_FILTER: | |
3593cab5 IM |
917 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
918 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
919 | return -ERESTARTSYS; |
920 | } | |
f705e6e4 | 921 | ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 922 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
923 | break; |
924 | ||
925 | case DMX_SET_BUFFER_SIZE: | |
3593cab5 IM |
926 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
927 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
928 | return -ERESTARTSYS; |
929 | } | |
f705e6e4 | 930 | ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg); |
3593cab5 | 931 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
932 | break; |
933 | ||
1da177e4 LT |
934 | case DMX_GET_PES_PIDS: |
935 | if (!dmxdev->demux->get_pes_pids) { | |
f705e6e4 | 936 | ret = -EINVAL; |
1da177e4 LT |
937 | break; |
938 | } | |
f705e6e4 | 939 | dmxdev->demux->get_pes_pids(dmxdev->demux, parg); |
1da177e4 LT |
940 | break; |
941 | ||
c0510052 AO |
942 | case DMX_GET_CAPS: |
943 | if (!dmxdev->demux->get_caps) { | |
944 | ret = -EINVAL; | |
945 | break; | |
946 | } | |
947 | ret = dmxdev->demux->get_caps(dmxdev->demux, parg); | |
948 | break; | |
949 | ||
950 | case DMX_SET_SOURCE: | |
951 | if (!dmxdev->demux->set_source) { | |
952 | ret = -EINVAL; | |
953 | break; | |
954 | } | |
955 | ret = dmxdev->demux->set_source(dmxdev->demux, parg); | |
956 | break; | |
957 | ||
1da177e4 LT |
958 | case DMX_GET_STC: |
959 | if (!dmxdev->demux->get_stc) { | |
f705e6e4 | 960 | ret = -EINVAL; |
1da177e4 LT |
961 | break; |
962 | } | |
963 | ret = dmxdev->demux->get_stc(dmxdev->demux, | |
f705e6e4 AO |
964 | ((struct dmx_stc *)parg)->num, |
965 | &((struct dmx_stc *)parg)->stc, | |
966 | &((struct dmx_stc *)parg)->base); | |
1da177e4 LT |
967 | break; |
968 | ||
969 | default: | |
f705e6e4 AO |
970 | ret = -EINVAL; |
971 | break; | |
1da177e4 | 972 | } |
3593cab5 | 973 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
974 | return ret; |
975 | } | |
976 | ||
977 | static int dvb_demux_ioctl(struct inode *inode, struct file *file, | |
978 | unsigned int cmd, unsigned long arg) | |
979 | { | |
980 | return dvb_usercopy(inode, file, cmd, arg, dvb_demux_do_ioctl); | |
981 | } | |
982 | ||
f705e6e4 | 983 | static unsigned int dvb_demux_poll(struct file *file, poll_table *wait) |
1da177e4 | 984 | { |
3ec4a307 | 985 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
986 | unsigned int mask = 0; |
987 | ||
988 | if (!dmxdevfilter) | |
989 | return -EINVAL; | |
990 | ||
991 | poll_wait(file, &dmxdevfilter->buffer.queue, wait); | |
992 | ||
993 | if (dmxdevfilter->state != DMXDEV_STATE_GO && | |
994 | dmxdevfilter->state != DMXDEV_STATE_DONE && | |
995 | dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT) | |
996 | return 0; | |
997 | ||
998 | if (dmxdevfilter->buffer.error) | |
999 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
1000 | ||
34731df2 | 1001 | if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer)) |
1da177e4 LT |
1002 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
1003 | ||
1004 | return mask; | |
1005 | } | |
1006 | ||
1da177e4 LT |
1007 | static int dvb_demux_release(struct inode *inode, struct file *file) |
1008 | { | |
3ec4a307 | 1009 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
1010 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
1011 | ||
57861b43 MR |
1012 | int ret; |
1013 | ||
1014 | ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter); | |
1015 | ||
1016 | mutex_lock(&dmxdev->mutex); | |
1017 | dmxdev->dvbdev->users--; | |
1018 | if(dmxdev->dvbdev->users==1 && dmxdev->exit==1) { | |
1019 | fops_put(file->f_op); | |
1020 | file->f_op = NULL; | |
1021 | mutex_unlock(&dmxdev->mutex); | |
1022 | wake_up(&dmxdev->dvbdev->wait_queue); | |
1023 | } else | |
1024 | mutex_unlock(&dmxdev->mutex); | |
1025 | ||
1026 | return ret; | |
1da177e4 LT |
1027 | } |
1028 | ||
1da177e4 | 1029 | static struct file_operations dvb_demux_fops = { |
f705e6e4 AO |
1030 | .owner = THIS_MODULE, |
1031 | .read = dvb_demux_read, | |
1032 | .ioctl = dvb_demux_ioctl, | |
1033 | .open = dvb_demux_open, | |
1034 | .release = dvb_demux_release, | |
1035 | .poll = dvb_demux_poll, | |
1da177e4 LT |
1036 | }; |
1037 | ||
1da177e4 | 1038 | static struct dvb_device dvbdev_demux = { |
f705e6e4 AO |
1039 | .priv = NULL, |
1040 | .users = 1, | |
1041 | .writers = 1, | |
1042 | .fops = &dvb_demux_fops | |
1da177e4 LT |
1043 | }; |
1044 | ||
1da177e4 | 1045 | static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file, |
f705e6e4 | 1046 | unsigned int cmd, void *parg) |
1da177e4 | 1047 | { |
0c53c70f JS |
1048 | struct dvb_device *dvbdev = file->private_data; |
1049 | struct dmxdev *dmxdev = dvbdev->priv; | |
a095be4b | 1050 | unsigned long arg = (unsigned long)parg; |
f705e6e4 | 1051 | int ret; |
1da177e4 | 1052 | |
3593cab5 | 1053 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
1054 | return -ERESTARTSYS; |
1055 | ||
1056 | switch (cmd) { | |
1057 | case DMX_SET_BUFFER_SIZE: | |
a095be4b | 1058 | ret = dvb_dvr_set_buffer_size(dmxdev, arg); |
1da177e4 LT |
1059 | break; |
1060 | ||
1061 | default: | |
f705e6e4 AO |
1062 | ret = -EINVAL; |
1063 | break; | |
1da177e4 | 1064 | } |
3593cab5 | 1065 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
1066 | return ret; |
1067 | } | |
1068 | ||
1da177e4 | 1069 | static int dvb_dvr_ioctl(struct inode *inode, struct file *file, |
f705e6e4 | 1070 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
1071 | { |
1072 | return dvb_usercopy(inode, file, cmd, arg, dvb_dvr_do_ioctl); | |
1073 | } | |
1074 | ||
f705e6e4 | 1075 | static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait) |
1da177e4 | 1076 | { |
0c53c70f JS |
1077 | struct dvb_device *dvbdev = file->private_data; |
1078 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
1079 | unsigned int mask = 0; |
1080 | ||
46b4f7c1 | 1081 | dprintk("function : %s\n", __func__); |
1da177e4 LT |
1082 | |
1083 | poll_wait(file, &dmxdev->dvr_buffer.queue, wait); | |
1084 | ||
f705e6e4 | 1085 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
1da177e4 LT |
1086 | if (dmxdev->dvr_buffer.error) |
1087 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
1088 | ||
34731df2 | 1089 | if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer)) |
1da177e4 LT |
1090 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
1091 | } else | |
1092 | mask |= (POLLOUT | POLLWRNORM | POLLPRI); | |
1093 | ||
1094 | return mask; | |
1095 | } | |
1096 | ||
1da177e4 | 1097 | static struct file_operations dvb_dvr_fops = { |
f705e6e4 AO |
1098 | .owner = THIS_MODULE, |
1099 | .read = dvb_dvr_read, | |
1100 | .write = dvb_dvr_write, | |
1101 | .ioctl = dvb_dvr_ioctl, | |
1102 | .open = dvb_dvr_open, | |
1103 | .release = dvb_dvr_release, | |
1104 | .poll = dvb_dvr_poll, | |
1da177e4 LT |
1105 | }; |
1106 | ||
1107 | static struct dvb_device dvbdev_dvr = { | |
f705e6e4 | 1108 | .priv = NULL, |
5e85bd05 | 1109 | .readers = 1, |
57861b43 | 1110 | .users = 1, |
f705e6e4 | 1111 | .fops = &dvb_dvr_fops |
1da177e4 LT |
1112 | }; |
1113 | ||
f705e6e4 | 1114 | int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) |
1da177e4 LT |
1115 | { |
1116 | int i; | |
1117 | ||
1118 | if (dmxdev->demux->open(dmxdev->demux) < 0) | |
1119 | return -EUSERS; | |
1120 | ||
f705e6e4 | 1121 | dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter)); |
1da177e4 LT |
1122 | if (!dmxdev->filter) |
1123 | return -ENOMEM; | |
1124 | ||
3593cab5 | 1125 | mutex_init(&dmxdev->mutex); |
1da177e4 | 1126 | spin_lock_init(&dmxdev->lock); |
f705e6e4 AO |
1127 | for (i = 0; i < dmxdev->filternum; i++) { |
1128 | dmxdev->filter[i].dev = dmxdev; | |
1129 | dmxdev->filter[i].buffer.data = NULL; | |
1130 | dvb_dmxdev_filter_state_set(&dmxdev->filter[i], | |
1131 | DMXDEV_STATE_FREE); | |
1da177e4 LT |
1132 | } |
1133 | ||
f705e6e4 AO |
1134 | dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, |
1135 | DVB_DEVICE_DEMUX); | |
1136 | dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, | |
1137 | dmxdev, DVB_DEVICE_DVR); | |
1da177e4 | 1138 | |
34731df2 | 1139 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192); |
1da177e4 LT |
1140 | |
1141 | return 0; | |
1142 | } | |
f705e6e4 | 1143 | |
1da177e4 LT |
1144 | EXPORT_SYMBOL(dvb_dmxdev_init); |
1145 | ||
f705e6e4 | 1146 | void dvb_dmxdev_release(struct dmxdev *dmxdev) |
1da177e4 | 1147 | { |
57861b43 MR |
1148 | dmxdev->exit=1; |
1149 | if (dmxdev->dvbdev->users > 1) { | |
1150 | wait_event(dmxdev->dvbdev->wait_queue, | |
1151 | dmxdev->dvbdev->users==1); | |
1152 | } | |
1153 | if (dmxdev->dvr_dvbdev->users > 1) { | |
1154 | wait_event(dmxdev->dvr_dvbdev->wait_queue, | |
1155 | dmxdev->dvr_dvbdev->users==1); | |
1156 | } | |
1157 | ||
1da177e4 LT |
1158 | dvb_unregister_device(dmxdev->dvbdev); |
1159 | dvb_unregister_device(dmxdev->dvr_dvbdev); | |
1160 | ||
1161 | vfree(dmxdev->filter); | |
f705e6e4 | 1162 | dmxdev->filter = NULL; |
1da177e4 LT |
1163 | dmxdev->demux->close(dmxdev->demux); |
1164 | } | |
f705e6e4 | 1165 | |
1da177e4 | 1166 | EXPORT_SYMBOL(dvb_dmxdev_release); |