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 | * | |
1da177e4 LT |
17 | */ |
18 | ||
b3ad24d2 MCC |
19 | #define pr_fmt(fmt) "dmxdev: " fmt |
20 | ||
a99bbaf5 | 21 | #include <linux/sched.h> |
1da177e4 LT |
22 | #include <linux/spinlock.h> |
23 | #include <linux/slab.h> | |
24 | #include <linux/vmalloc.h> | |
25 | #include <linux/module.h> | |
1da177e4 LT |
26 | #include <linux/poll.h> |
27 | #include <linux/ioctl.h> | |
28 | #include <linux/wait.h> | |
7c0f6ba6 | 29 | #include <linux/uaccess.h> |
fada1935 MCC |
30 | #include <media/dmxdev.h> |
31 | #include <media/dvb_vb2.h> | |
1da177e4 LT |
32 | |
33 | static int debug; | |
34 | ||
35 | module_param(debug, int, 0644); | |
36 | MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); | |
37 | ||
b3ad24d2 MCC |
38 | #define dprintk(fmt, arg...) do { \ |
39 | if (debug) \ | |
40 | printk(KERN_DEBUG pr_fmt("%s: " fmt), \ | |
41 | __func__, ##arg); \ | |
42 | } while (0) | |
1da177e4 | 43 | |
34731df2 AO |
44 | static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf, |
45 | const u8 *src, size_t len) | |
1da177e4 | 46 | { |
34731df2 | 47 | ssize_t free; |
1da177e4 LT |
48 | |
49 | if (!len) | |
50 | return 0; | |
51 | if (!buf->data) | |
52 | return 0; | |
53 | ||
34731df2 AO |
54 | free = dvb_ringbuffer_free(buf); |
55 | if (len > free) { | |
b3ad24d2 | 56 | dprintk("buffer overflow\n"); |
34731df2 | 57 | return -EOVERFLOW; |
1da177e4 | 58 | } |
34731df2 AO |
59 | |
60 | return dvb_ringbuffer_write(buf, src, len); | |
1da177e4 LT |
61 | } |
62 | ||
34731df2 | 63 | static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src, |
f705e6e4 AO |
64 | int non_blocking, char __user *buf, |
65 | size_t count, loff_t *ppos) | |
1da177e4 | 66 | { |
34731df2 AO |
67 | size_t todo; |
68 | ssize_t avail; | |
69 | ssize_t ret = 0; | |
1da177e4 LT |
70 | |
71 | if (!src->data) | |
72 | return 0; | |
73 | ||
34731df2 AO |
74 | if (src->error) { |
75 | ret = src->error; | |
76 | dvb_ringbuffer_flush(src); | |
77 | return ret; | |
1da177e4 LT |
78 | } |
79 | ||
34731df2 AO |
80 | for (todo = count; todo > 0; todo -= ret) { |
81 | if (non_blocking && dvb_ringbuffer_empty(src)) { | |
82 | ret = -EWOULDBLOCK; | |
83 | break; | |
84 | } | |
1da177e4 | 85 | |
34731df2 AO |
86 | ret = wait_event_interruptible(src->queue, |
87 | !dvb_ringbuffer_empty(src) || | |
88 | (src->error != 0)); | |
89 | if (ret < 0) | |
90 | break; | |
1da177e4 | 91 | |
34731df2 AO |
92 | if (src->error) { |
93 | ret = src->error; | |
94 | dvb_ringbuffer_flush(src); | |
95 | break; | |
1da177e4 LT |
96 | } |
97 | ||
34731df2 | 98 | avail = dvb_ringbuffer_avail(src); |
f705e6e4 AO |
99 | if (avail > todo) |
100 | avail = todo; | |
34731df2 | 101 | |
b0ba0e3a | 102 | ret = dvb_ringbuffer_read_user(src, buf, avail); |
34731df2 AO |
103 | if (ret < 0) |
104 | break; | |
105 | ||
106 | buf += ret; | |
1da177e4 | 107 | } |
34731df2 AO |
108 | |
109 | return (count - todo) ? (count - todo) : ret; | |
1da177e4 LT |
110 | } |
111 | ||
f705e6e4 | 112 | static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type) |
1da177e4 LT |
113 | { |
114 | struct list_head *head, *pos; | |
115 | ||
f705e6e4 | 116 | head = demux->get_frontends(demux); |
1da177e4 LT |
117 | if (!head) |
118 | return NULL; | |
119 | list_for_each(pos, head) | |
f705e6e4 | 120 | if (DMX_FE_ENTRY(pos)->source == type) |
1da177e4 LT |
121 | return DMX_FE_ENTRY(pos); |
122 | ||
123 | return NULL; | |
124 | } | |
125 | ||
1da177e4 LT |
126 | static int dvb_dvr_open(struct inode *inode, struct file *file) |
127 | { | |
0c53c70f JS |
128 | struct dvb_device *dvbdev = file->private_data; |
129 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 | 130 | struct dmx_frontend *front; |
4021053e | 131 | bool need_ringbuffer = false; |
1da177e4 | 132 | |
b3ad24d2 | 133 | dprintk("%s\n", __func__); |
1da177e4 | 134 | |
3593cab5 | 135 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
136 | return -ERESTARTSYS; |
137 | ||
57861b43 MR |
138 | if (dmxdev->exit) { |
139 | mutex_unlock(&dmxdev->mutex); | |
140 | return -ENODEV; | |
141 | } | |
142 | ||
0b23498a MCC |
143 | dmxdev->may_do_mmap = 0; |
144 | ||
145 | /* | |
146 | * The logic here is a little tricky due to the ifdef. | |
147 | * | |
148 | * The ringbuffer is used for both read and mmap. | |
149 | * | |
150 | * It is not needed, however, on two situations: | |
151 | * - Write devices (access with O_WRONLY); | |
152 | * - For duplex device nodes, opened with O_RDWR. | |
153 | */ | |
154 | ||
4021053e MCC |
155 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) |
156 | need_ringbuffer = true; | |
0b23498a | 157 | else if ((file->f_flags & O_ACCMODE) == O_RDWR) { |
f705e6e4 | 158 | if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) { |
0b23498a MCC |
159 | #ifdef CONFIG_DVB_MMAP |
160 | dmxdev->may_do_mmap = 1; | |
161 | need_ringbuffer = true; | |
162 | #else | |
3593cab5 | 163 | mutex_unlock(&dmxdev->mutex); |
1da177e4 | 164 | return -EOPNOTSUPP; |
0b23498a | 165 | #endif |
1da177e4 LT |
166 | } |
167 | } | |
168 | ||
4021053e | 169 | if (need_ringbuffer) { |
5e85bd05 | 170 | void *mem; |
e90bbacd | 171 | |
5e85bd05 TP |
172 | if (!dvbdev->readers) { |
173 | mutex_unlock(&dmxdev->mutex); | |
174 | return -EBUSY; | |
175 | } | |
176 | mem = vmalloc(DVR_BUFFER_SIZE); | |
34731df2 | 177 | if (!mem) { |
f705e6e4 AO |
178 | mutex_unlock(&dmxdev->mutex); |
179 | return -ENOMEM; | |
180 | } | |
34731df2 | 181 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE); |
0b23498a MCC |
182 | if (dmxdev->may_do_mmap) |
183 | dvb_vb2_init(&dmxdev->dvr_vb2_ctx, "dvr", | |
184 | file->f_flags & O_NONBLOCK); | |
5e85bd05 | 185 | dvbdev->readers--; |
1da177e4 LT |
186 | } |
187 | ||
f705e6e4 AO |
188 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
189 | dmxdev->dvr_orig_fe = dmxdev->demux->frontend; | |
1da177e4 LT |
190 | |
191 | if (!dmxdev->demux->write) { | |
3593cab5 | 192 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
193 | return -EOPNOTSUPP; |
194 | } | |
195 | ||
f705e6e4 | 196 | front = get_fe(dmxdev->demux, DMX_MEMORY_FE); |
1da177e4 LT |
197 | |
198 | if (!front) { | |
3593cab5 | 199 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
200 | return -EINVAL; |
201 | } | |
202 | dmxdev->demux->disconnect_frontend(dmxdev->demux); | |
203 | dmxdev->demux->connect_frontend(dmxdev->demux, front); | |
204 | } | |
57861b43 | 205 | dvbdev->users++; |
3593cab5 | 206 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
207 | return 0; |
208 | } | |
209 | ||
210 | static int dvb_dvr_release(struct inode *inode, struct file *file) | |
211 | { | |
0c53c70f JS |
212 | struct dvb_device *dvbdev = file->private_data; |
213 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 | 214 | |
c2788502 | 215 | mutex_lock(&dmxdev->mutex); |
1da177e4 | 216 | |
f705e6e4 | 217 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
1da177e4 LT |
218 | dmxdev->demux->disconnect_frontend(dmxdev->demux); |
219 | dmxdev->demux->connect_frontend(dmxdev->demux, | |
220 | dmxdev->dvr_orig_fe); | |
221 | } | |
4021053e | 222 | |
0b23498a MCC |
223 | if (((file->f_flags & O_ACCMODE) == O_RDONLY) || |
224 | dmxdev->may_do_mmap) { | |
225 | if (dmxdev->may_do_mmap) { | |
226 | if (dvb_vb2_is_streaming(&dmxdev->dvr_vb2_ctx)) | |
227 | dvb_vb2_stream_off(&dmxdev->dvr_vb2_ctx); | |
228 | dvb_vb2_release(&dmxdev->dvr_vb2_ctx); | |
229 | } | |
5e85bd05 | 230 | dvbdev->readers++; |
1da177e4 | 231 | if (dmxdev->dvr_buffer.data) { |
f705e6e4 | 232 | void *mem = dmxdev->dvr_buffer.data; |
e90bbacd | 233 | /*memory barrier*/ |
1da177e4 LT |
234 | mb(); |
235 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 236 | dmxdev->dvr_buffer.data = NULL; |
1da177e4 LT |
237 | spin_unlock_irq(&dmxdev->lock); |
238 | vfree(mem); | |
239 | } | |
240 | } | |
57861b43 MR |
241 | /* TODO */ |
242 | dvbdev->users--; | |
1c488ea9 | 243 | if (dvbdev->users == 1 && dmxdev->exit == 1) { |
57861b43 MR |
244 | mutex_unlock(&dmxdev->mutex); |
245 | wake_up(&dvbdev->wait_queue); | |
246 | } else | |
247 | mutex_unlock(&dmxdev->mutex); | |
248 | ||
1da177e4 LT |
249 | return 0; |
250 | } | |
251 | ||
252 | static ssize_t dvb_dvr_write(struct file *file, const char __user *buf, | |
f705e6e4 | 253 | size_t count, loff_t *ppos) |
1da177e4 | 254 | { |
0c53c70f JS |
255 | struct dvb_device *dvbdev = file->private_data; |
256 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
257 | int ret; |
258 | ||
259 | if (!dmxdev->demux->write) | |
260 | return -EOPNOTSUPP; | |
f705e6e4 | 261 | if ((file->f_flags & O_ACCMODE) != O_WRONLY) |
1da177e4 | 262 | return -EINVAL; |
3593cab5 | 263 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 | 264 | return -ERESTARTSYS; |
57861b43 MR |
265 | |
266 | if (dmxdev->exit) { | |
267 | mutex_unlock(&dmxdev->mutex); | |
268 | return -ENODEV; | |
269 | } | |
f705e6e4 | 270 | ret = dmxdev->demux->write(dmxdev->demux, buf, count); |
3593cab5 | 271 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
272 | return ret; |
273 | } | |
274 | ||
275 | static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count, | |
f705e6e4 | 276 | loff_t *ppos) |
1da177e4 | 277 | { |
0c53c70f JS |
278 | struct dvb_device *dvbdev = file->private_data; |
279 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 | 280 | |
eda9f752 | 281 | if (dmxdev->exit) |
57861b43 | 282 | return -ENODEV; |
57861b43 | 283 | |
eda9f752 SA |
284 | return dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer, |
285 | file->f_flags & O_NONBLOCK, | |
286 | buf, count, ppos); | |
1da177e4 LT |
287 | } |
288 | ||
a095be4b AO |
289 | static int dvb_dvr_set_buffer_size(struct dmxdev *dmxdev, |
290 | unsigned long size) | |
291 | { | |
292 | struct dvb_ringbuffer *buf = &dmxdev->dvr_buffer; | |
293 | void *newmem; | |
294 | void *oldmem; | |
295 | ||
b3ad24d2 | 296 | dprintk("%s\n", __func__); |
a095be4b AO |
297 | |
298 | if (buf->size == size) | |
299 | return 0; | |
300 | if (!size) | |
301 | return -EINVAL; | |
302 | ||
303 | newmem = vmalloc(size); | |
304 | if (!newmem) | |
305 | return -ENOMEM; | |
306 | ||
307 | oldmem = buf->data; | |
308 | ||
309 | spin_lock_irq(&dmxdev->lock); | |
310 | buf->data = newmem; | |
311 | buf->size = size; | |
312 | ||
313 | /* reset and not flush in case the buffer shrinks */ | |
314 | dvb_ringbuffer_reset(buf); | |
315 | spin_unlock_irq(&dmxdev->lock); | |
316 | ||
317 | vfree(oldmem); | |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
f705e6e4 AO |
322 | static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter |
323 | *dmxdevfilter, int state) | |
1da177e4 LT |
324 | { |
325 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 326 | dmxdevfilter->state = state; |
1da177e4 LT |
327 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
328 | } | |
329 | ||
f705e6e4 AO |
330 | static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, |
331 | unsigned long size) | |
1da177e4 | 332 | { |
34731df2 | 333 | struct dvb_ringbuffer *buf = &dmxdevfilter->buffer; |
a095be4b AO |
334 | void *newmem; |
335 | void *oldmem; | |
1da177e4 | 336 | |
f705e6e4 | 337 | if (buf->size == size) |
1da177e4 | 338 | return 0; |
a095be4b AO |
339 | if (!size) |
340 | return -EINVAL; | |
f705e6e4 | 341 | if (dmxdevfilter->state >= DMXDEV_STATE_GO) |
1da177e4 | 342 | return -EBUSY; |
a095be4b AO |
343 | |
344 | newmem = vmalloc(size); | |
345 | if (!newmem) | |
346 | return -ENOMEM; | |
347 | ||
348 | oldmem = buf->data; | |
349 | ||
1da177e4 | 350 | spin_lock_irq(&dmxdevfilter->dev->lock); |
a095be4b | 351 | buf->data = newmem; |
f705e6e4 | 352 | buf->size = size; |
48c01a9c AO |
353 | |
354 | /* reset and not flush in case the buffer shrinks */ | |
355 | dvb_ringbuffer_reset(buf); | |
1da177e4 | 356 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
1da177e4 | 357 | |
a095be4b AO |
358 | vfree(oldmem); |
359 | ||
1da177e4 LT |
360 | return 0; |
361 | } | |
362 | ||
e7e0e2cf | 363 | static void dvb_dmxdev_filter_timeout(struct timer_list *t) |
1da177e4 | 364 | { |
e7e0e2cf | 365 | struct dmxdev_filter *dmxdevfilter = from_timer(dmxdevfilter, t, timer); |
1da177e4 | 366 | |
f705e6e4 | 367 | dmxdevfilter->buffer.error = -ETIMEDOUT; |
1da177e4 | 368 | spin_lock_irq(&dmxdevfilter->dev->lock); |
f705e6e4 | 369 | dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT; |
1da177e4 LT |
370 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
371 | wake_up(&dmxdevfilter->buffer.queue); | |
372 | } | |
373 | ||
374 | static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter) | |
375 | { | |
f705e6e4 | 376 | struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec; |
1da177e4 LT |
377 | |
378 | del_timer(&dmxdevfilter->timer); | |
379 | if (para->timeout) { | |
f705e6e4 AO |
380 | dmxdevfilter->timer.expires = |
381 | jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000; | |
1da177e4 LT |
382 | add_timer(&dmxdevfilter->timer); |
383 | } | |
384 | } | |
385 | ||
386 | static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 | 387 | const u8 *buffer2, size_t buffer2_len, |
fdbeb962 MCC |
388 | struct dmx_section_filter *filter, |
389 | u32 *buffer_flags) | |
1da177e4 | 390 | { |
0c53c70f | 391 | struct dmxdev_filter *dmxdevfilter = filter->priv; |
1da177e4 LT |
392 | int ret; |
393 | ||
57868acc SST |
394 | if (!dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx) && |
395 | dmxdevfilter->buffer.error) { | |
1da177e4 LT |
396 | wake_up(&dmxdevfilter->buffer.queue); |
397 | return 0; | |
398 | } | |
28100165 | 399 | spin_lock(&dmxdevfilter->dev->lock); |
f705e6e4 | 400 | if (dmxdevfilter->state != DMXDEV_STATE_GO) { |
28100165 | 401 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
402 | return 0; |
403 | } | |
404 | del_timer(&dmxdevfilter->timer); | |
b3ad24d2 | 405 | dprintk("section callback %*ph\n", 6, buffer1); |
57868acc SST |
406 | if (dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx)) { |
407 | ret = dvb_vb2_fill_buffer(&dmxdevfilter->vb2_ctx, | |
fdbeb962 MCC |
408 | buffer1, buffer1_len, |
409 | buffer_flags); | |
57868acc SST |
410 | if (ret == buffer1_len) |
411 | ret = dvb_vb2_fill_buffer(&dmxdevfilter->vb2_ctx, | |
fdbeb962 MCC |
412 | buffer2, buffer2_len, |
413 | buffer_flags); | |
57868acc SST |
414 | } else { |
415 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, | |
416 | buffer1, buffer1_len); | |
417 | if (ret == buffer1_len) { | |
418 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, | |
419 | buffer2, buffer2_len); | |
420 | } | |
1da177e4 | 421 | } |
414abbd2 | 422 | if (ret < 0) |
34731df2 | 423 | dmxdevfilter->buffer.error = ret; |
f705e6e4 AO |
424 | if (dmxdevfilter->params.sec.flags & DMX_ONESHOT) |
425 | dmxdevfilter->state = DMXDEV_STATE_DONE; | |
28100165 | 426 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
427 | wake_up(&dmxdevfilter->buffer.queue); |
428 | return 0; | |
429 | } | |
430 | ||
431 | static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 | 432 | const u8 *buffer2, size_t buffer2_len, |
fdbeb962 MCC |
433 | struct dmx_ts_feed *feed, |
434 | u32 *buffer_flags) | |
1da177e4 | 435 | { |
0c53c70f | 436 | struct dmxdev_filter *dmxdevfilter = feed->priv; |
34731df2 | 437 | struct dvb_ringbuffer *buffer; |
ec5b1004 | 438 | #ifdef CONFIG_DVB_MMAP |
57868acc | 439 | struct dvb_vb2_ctx *ctx; |
4021053e | 440 | #endif |
1da177e4 LT |
441 | int ret; |
442 | ||
28100165 | 443 | spin_lock(&dmxdevfilter->dev->lock); |
f705e6e4 | 444 | if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) { |
28100165 | 445 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
446 | return 0; |
447 | } | |
448 | ||
57868acc SST |
449 | if (dmxdevfilter->params.pes.output == DMX_OUT_TAP || |
450 | dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP) { | |
f705e6e4 | 451 | buffer = &dmxdevfilter->buffer; |
ec5b1004 | 452 | #ifdef CONFIG_DVB_MMAP |
57868acc | 453 | ctx = &dmxdevfilter->vb2_ctx; |
4021053e | 454 | #endif |
57868acc | 455 | } else { |
f705e6e4 | 456 | buffer = &dmxdevfilter->dev->dvr_buffer; |
ec5b1004 | 457 | #ifdef CONFIG_DVB_MMAP |
57868acc | 458 | ctx = &dmxdevfilter->dev->dvr_vb2_ctx; |
4021053e | 459 | #endif |
57868acc SST |
460 | } |
461 | ||
462 | if (dvb_vb2_is_streaming(ctx)) { | |
fdbeb962 MCC |
463 | ret = dvb_vb2_fill_buffer(ctx, buffer1, buffer1_len, |
464 | buffer_flags); | |
57868acc | 465 | if (ret == buffer1_len) |
fdbeb962 MCC |
466 | ret = dvb_vb2_fill_buffer(ctx, buffer2, buffer2_len, |
467 | buffer_flags); | |
57868acc SST |
468 | } else { |
469 | if (buffer->error) { | |
470 | spin_unlock(&dmxdevfilter->dev->lock); | |
471 | wake_up(&buffer->queue); | |
472 | return 0; | |
473 | } | |
474 | ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len); | |
475 | if (ret == buffer1_len) | |
476 | ret = dvb_dmxdev_buffer_write(buffer, | |
477 | buffer2, buffer2_len); | |
1da177e4 | 478 | } |
414abbd2 | 479 | if (ret < 0) |
34731df2 | 480 | buffer->error = ret; |
28100165 | 481 | spin_unlock(&dmxdevfilter->dev->lock); |
1da177e4 LT |
482 | wake_up(&buffer->queue); |
483 | return 0; | |
484 | } | |
485 | ||
1da177e4 | 486 | /* stop feed but only mark the specified filter as stopped (state set) */ |
1da177e4 LT |
487 | static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter) |
488 | { | |
1cb662a3 AO |
489 | struct dmxdev_feed *feed; |
490 | ||
1da177e4 LT |
491 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); |
492 | ||
493 | switch (dmxdevfilter->type) { | |
494 | case DMXDEV_TYPE_SEC: | |
495 | del_timer(&dmxdevfilter->timer); | |
496 | dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec); | |
497 | break; | |
498 | case DMXDEV_TYPE_PES: | |
1cb662a3 AO |
499 | list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) |
500 | feed->ts->stop_filtering(feed->ts); | |
1da177e4 LT |
501 | break; |
502 | default: | |
503 | return -EINVAL; | |
504 | } | |
505 | return 0; | |
506 | } | |
507 | ||
1da177e4 | 508 | /* start feed associated with the specified filter */ |
1da177e4 LT |
509 | static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter) |
510 | { | |
1cb662a3 AO |
511 | struct dmxdev_feed *feed; |
512 | int ret; | |
513 | ||
f705e6e4 | 514 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); |
1da177e4 LT |
515 | |
516 | switch (filter->type) { | |
517 | case DMXDEV_TYPE_SEC: | |
518 | return filter->feed.sec->start_filtering(filter->feed.sec); | |
1da177e4 | 519 | case DMXDEV_TYPE_PES: |
1cb662a3 AO |
520 | list_for_each_entry(feed, &filter->feed.ts, next) { |
521 | ret = feed->ts->start_filtering(feed->ts); | |
522 | if (ret < 0) { | |
523 | dvb_dmxdev_feed_stop(filter); | |
524 | return ret; | |
525 | } | |
526 | } | |
527 | break; | |
1da177e4 LT |
528 | default: |
529 | return -EINVAL; | |
530 | } | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
1da177e4 LT |
535 | /* restart section feed if it has filters left associated with it, |
536 | otherwise release the feed */ | |
1da177e4 LT |
537 | static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter) |
538 | { | |
539 | int i; | |
540 | struct dmxdev *dmxdev = filter->dev; | |
541 | u16 pid = filter->params.sec.pid; | |
542 | ||
f705e6e4 AO |
543 | for (i = 0; i < dmxdev->filternum; i++) |
544 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && | |
545 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && | |
546 | dmxdev->filter[i].params.sec.pid == pid) { | |
1da177e4 LT |
547 | dvb_dmxdev_feed_start(&dmxdev->filter[i]); |
548 | return 0; | |
549 | } | |
550 | ||
f705e6e4 AO |
551 | filter->dev->demux->release_section_feed(dmxdev->demux, |
552 | filter->feed.sec); | |
1da177e4 LT |
553 | |
554 | return 0; | |
555 | } | |
556 | ||
557 | static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter) | |
558 | { | |
1cb662a3 AO |
559 | struct dmxdev_feed *feed; |
560 | struct dmx_demux *demux; | |
561 | ||
f705e6e4 | 562 | if (dmxdevfilter->state < DMXDEV_STATE_GO) |
1da177e4 LT |
563 | return 0; |
564 | ||
565 | switch (dmxdevfilter->type) { | |
566 | case DMXDEV_TYPE_SEC: | |
567 | if (!dmxdevfilter->feed.sec) | |
568 | break; | |
569 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
570 | if (dmxdevfilter->filter.sec) | |
571 | dmxdevfilter->feed.sec-> | |
f705e6e4 AO |
572 | release_filter(dmxdevfilter->feed.sec, |
573 | dmxdevfilter->filter.sec); | |
1da177e4 | 574 | dvb_dmxdev_feed_restart(dmxdevfilter); |
f705e6e4 | 575 | dmxdevfilter->feed.sec = NULL; |
1da177e4 LT |
576 | break; |
577 | case DMXDEV_TYPE_PES: | |
1da177e4 | 578 | dvb_dmxdev_feed_stop(dmxdevfilter); |
1cb662a3 AO |
579 | demux = dmxdevfilter->dev->demux; |
580 | list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) { | |
581 | demux->release_ts_feed(demux, feed->ts); | |
582 | feed->ts = NULL; | |
583 | } | |
1da177e4 LT |
584 | break; |
585 | default: | |
f705e6e4 | 586 | if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED) |
1da177e4 LT |
587 | return 0; |
588 | return -EINVAL; | |
589 | } | |
34731df2 AO |
590 | |
591 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); | |
1da177e4 LT |
592 | return 0; |
593 | } | |
594 | ||
1cb662a3 AO |
595 | static void dvb_dmxdev_delete_pids(struct dmxdev_filter *dmxdevfilter) |
596 | { | |
597 | struct dmxdev_feed *feed, *tmp; | |
598 | ||
599 | /* delete all PIDs */ | |
600 | list_for_each_entry_safe(feed, tmp, &dmxdevfilter->feed.ts, next) { | |
601 | list_del(&feed->next); | |
602 | kfree(feed); | |
603 | } | |
604 | ||
605 | BUG_ON(!list_empty(&dmxdevfilter->feed.ts)); | |
606 | } | |
607 | ||
1da177e4 LT |
608 | static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter) |
609 | { | |
f705e6e4 | 610 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
611 | return 0; |
612 | ||
1cb662a3 AO |
613 | if (dmxdevfilter->type == DMXDEV_TYPE_PES) |
614 | dvb_dmxdev_delete_pids(dmxdevfilter); | |
615 | ||
f705e6e4 | 616 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 LT |
617 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
618 | return 0; | |
619 | } | |
620 | ||
1cb662a3 AO |
621 | static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev, |
622 | struct dmxdev_filter *filter, | |
623 | struct dmxdev_feed *feed) | |
624 | { | |
dde67d50 | 625 | ktime_t timeout = ktime_set(0, 0); |
1cb662a3 | 626 | struct dmx_pes_filter_params *para = &filter->params.pes; |
3256b36e | 627 | enum dmx_output otype; |
1cb662a3 AO |
628 | int ret; |
629 | int ts_type; | |
fde04ab9 | 630 | enum dmx_ts_pes ts_pes; |
1cb662a3 AO |
631 | struct dmx_ts_feed *tsfeed; |
632 | ||
633 | feed->ts = NULL; | |
634 | otype = para->output; | |
635 | ||
9ae2ae35 | 636 | ts_pes = para->pes_type; |
1cb662a3 AO |
637 | |
638 | if (ts_pes < DMX_PES_OTHER) | |
639 | ts_type = TS_DECODER; | |
640 | else | |
641 | ts_type = 0; | |
642 | ||
643 | if (otype == DMX_OUT_TS_TAP) | |
644 | ts_type |= TS_PACKET; | |
645 | else if (otype == DMX_OUT_TSDEMUX_TAP) | |
646 | ts_type |= TS_PACKET | TS_DEMUX; | |
647 | else if (otype == DMX_OUT_TAP) | |
648 | ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY; | |
649 | ||
650 | ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, &feed->ts, | |
651 | dvb_dmxdev_ts_callback); | |
652 | if (ret < 0) | |
653 | return ret; | |
654 | ||
655 | tsfeed = feed->ts; | |
656 | tsfeed->priv = filter; | |
657 | ||
dd79d27e | 658 | ret = tsfeed->set(tsfeed, feed->pid, ts_type, ts_pes, timeout); |
1cb662a3 AO |
659 | if (ret < 0) { |
660 | dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed); | |
661 | return ret; | |
662 | } | |
663 | ||
664 | ret = tsfeed->start_filtering(tsfeed); | |
665 | if (ret < 0) { | |
666 | dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed); | |
667 | return ret; | |
668 | } | |
669 | ||
670 | return 0; | |
671 | } | |
672 | ||
1da177e4 LT |
673 | static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) |
674 | { | |
675 | struct dmxdev *dmxdev = filter->dev; | |
1cb662a3 | 676 | struct dmxdev_feed *feed; |
1da177e4 LT |
677 | void *mem; |
678 | int ret, i; | |
679 | ||
680 | if (filter->state < DMXDEV_STATE_SET) | |
681 | return -EINVAL; | |
682 | ||
683 | if (filter->state >= DMXDEV_STATE_GO) | |
684 | dvb_dmxdev_filter_stop(filter); | |
685 | ||
34731df2 | 686 | if (!filter->buffer.data) { |
1da177e4 | 687 | mem = vmalloc(filter->buffer.size); |
34731df2 AO |
688 | if (!mem) |
689 | return -ENOMEM; | |
1da177e4 | 690 | spin_lock_irq(&filter->dev->lock); |
f705e6e4 | 691 | filter->buffer.data = mem; |
1da177e4 | 692 | spin_unlock_irq(&filter->dev->lock); |
1da177e4 LT |
693 | } |
694 | ||
34731df2 | 695 | dvb_ringbuffer_flush(&filter->buffer); |
1da177e4 LT |
696 | |
697 | switch (filter->type) { | |
698 | case DMXDEV_TYPE_SEC: | |
699 | { | |
f705e6e4 AO |
700 | struct dmx_sct_filter_params *para = &filter->params.sec; |
701 | struct dmx_section_filter **secfilter = &filter->filter.sec; | |
702 | struct dmx_section_feed **secfeed = &filter->feed.sec; | |
703 | ||
704 | *secfilter = NULL; | |
705 | *secfeed = NULL; | |
1da177e4 | 706 | |
1da177e4 LT |
707 | |
708 | /* find active filter/feed with same PID */ | |
f705e6e4 | 709 | for (i = 0; i < dmxdev->filternum; i++) { |
1da177e4 | 710 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && |
09794a6f AO |
711 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && |
712 | dmxdev->filter[i].params.sec.pid == para->pid) { | |
1da177e4 LT |
713 | *secfeed = dmxdev->filter[i].feed.sec; |
714 | break; | |
715 | } | |
716 | } | |
717 | ||
718 | /* if no feed found, try to allocate new one */ | |
719 | if (!*secfeed) { | |
f705e6e4 AO |
720 | ret = dmxdev->demux->allocate_section_feed(dmxdev->demux, |
721 | secfeed, | |
722 | dvb_dmxdev_section_callback); | |
723 | if (ret < 0) { | |
b3ad24d2 | 724 | pr_err("DVB (%s): could not alloc feed\n", |
46b4f7c1 | 725 | __func__); |
1da177e4 LT |
726 | return ret; |
727 | } | |
728 | ||
dd79d27e | 729 | ret = (*secfeed)->set(*secfeed, para->pid, |
f705e6e4 AO |
730 | (para->flags & DMX_CHECK_CRC) ? 1 : 0); |
731 | if (ret < 0) { | |
b3ad24d2 | 732 | pr_err("DVB (%s): could not set feed\n", |
46b4f7c1 | 733 | __func__); |
1da177e4 LT |
734 | dvb_dmxdev_feed_restart(filter); |
735 | return ret; | |
736 | } | |
737 | } else { | |
738 | dvb_dmxdev_feed_stop(filter); | |
739 | } | |
740 | ||
f705e6e4 | 741 | ret = (*secfeed)->allocate_filter(*secfeed, secfilter); |
1da177e4 LT |
742 | if (ret < 0) { |
743 | dvb_dmxdev_feed_restart(filter); | |
744 | filter->feed.sec->start_filtering(*secfeed); | |
f705e6e4 | 745 | dprintk("could not get filter\n"); |
1da177e4 LT |
746 | return ret; |
747 | } | |
748 | ||
749 | (*secfilter)->priv = filter; | |
750 | ||
751 | memcpy(&((*secfilter)->filter_value[3]), | |
f705e6e4 | 752 | &(para->filter.filter[1]), DMX_FILTER_SIZE - 1); |
1da177e4 | 753 | memcpy(&(*secfilter)->filter_mask[3], |
f705e6e4 | 754 | ¶->filter.mask[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 755 | memcpy(&(*secfilter)->filter_mode[3], |
f705e6e4 | 756 | ¶->filter.mode[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 757 | |
f705e6e4 AO |
758 | (*secfilter)->filter_value[0] = para->filter.filter[0]; |
759 | (*secfilter)->filter_mask[0] = para->filter.mask[0]; | |
760 | (*secfilter)->filter_mode[0] = para->filter.mode[0]; | |
761 | (*secfilter)->filter_mask[1] = 0; | |
762 | (*secfilter)->filter_mask[2] = 0; | |
1da177e4 LT |
763 | |
764 | filter->todo = 0; | |
765 | ||
f705e6e4 | 766 | ret = filter->feed.sec->start_filtering(filter->feed.sec); |
1da177e4 LT |
767 | if (ret < 0) |
768 | return ret; | |
769 | ||
770 | dvb_dmxdev_filter_timer(filter); | |
771 | break; | |
772 | } | |
1da177e4 | 773 | case DMXDEV_TYPE_PES: |
1cb662a3 AO |
774 | list_for_each_entry(feed, &filter->feed.ts, next) { |
775 | ret = dvb_dmxdev_start_feed(dmxdev, filter, feed); | |
776 | if (ret < 0) { | |
777 | dvb_dmxdev_filter_stop(filter); | |
778 | return ret; | |
779 | } | |
76197924 | 780 | } |
1da177e4 | 781 | break; |
1da177e4 LT |
782 | default: |
783 | return -EINVAL; | |
784 | } | |
785 | ||
786 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); | |
787 | return 0; | |
788 | } | |
789 | ||
790 | static int dvb_demux_open(struct inode *inode, struct file *file) | |
791 | { | |
0c53c70f JS |
792 | struct dvb_device *dvbdev = file->private_data; |
793 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
794 | int i; |
795 | struct dmxdev_filter *dmxdevfilter; | |
796 | ||
797 | if (!dmxdev->filter) | |
798 | return -EINVAL; | |
799 | ||
3593cab5 | 800 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
801 | return -ERESTARTSYS; |
802 | ||
f705e6e4 AO |
803 | for (i = 0; i < dmxdev->filternum; i++) |
804 | if (dmxdev->filter[i].state == DMXDEV_STATE_FREE) | |
1da177e4 LT |
805 | break; |
806 | ||
f705e6e4 | 807 | if (i == dmxdev->filternum) { |
3593cab5 | 808 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
809 | return -EMFILE; |
810 | } | |
811 | ||
f705e6e4 | 812 | dmxdevfilter = &dmxdev->filter[i]; |
3593cab5 | 813 | mutex_init(&dmxdevfilter->mutex); |
f705e6e4 | 814 | file->private_data = dmxdevfilter; |
1da177e4 | 815 | |
0b23498a MCC |
816 | #ifdef CONFIG_DVB_MMAP |
817 | dmxdev->may_do_mmap = 1; | |
818 | #else | |
819 | dmxdev->may_do_mmap = 0; | |
820 | #endif | |
821 | ||
34731df2 | 822 | dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192); |
57868acc SST |
823 | dvb_vb2_init(&dmxdevfilter->vb2_ctx, "demux_filter", |
824 | file->f_flags & O_NONBLOCK); | |
f705e6e4 | 825 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 | 826 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
e7e0e2cf | 827 | timer_setup(&dmxdevfilter->timer, dvb_dmxdev_filter_timeout, 0); |
1da177e4 | 828 | |
57861b43 MR |
829 | dvbdev->users++; |
830 | ||
3593cab5 | 831 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
832 | return 0; |
833 | } | |
834 | ||
f705e6e4 AO |
835 | static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, |
836 | struct dmxdev_filter *dmxdevfilter) | |
1da177e4 | 837 | { |
c2788502 SA |
838 | mutex_lock(&dmxdev->mutex); |
839 | mutex_lock(&dmxdevfilter->mutex); | |
57868acc SST |
840 | if (dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx)) |
841 | dvb_vb2_stream_off(&dmxdevfilter->vb2_ctx); | |
842 | dvb_vb2_release(&dmxdevfilter->vb2_ctx); | |
843 | ||
1da177e4 LT |
844 | |
845 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
846 | dvb_dmxdev_filter_reset(dmxdevfilter); | |
847 | ||
848 | if (dmxdevfilter->buffer.data) { | |
f705e6e4 | 849 | void *mem = dmxdevfilter->buffer.data; |
1da177e4 LT |
850 | |
851 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 852 | dmxdevfilter->buffer.data = NULL; |
1da177e4 LT |
853 | spin_unlock_irq(&dmxdev->lock); |
854 | vfree(mem); | |
855 | } | |
856 | ||
857 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE); | |
858 | wake_up(&dmxdevfilter->buffer.queue); | |
3593cab5 IM |
859 | mutex_unlock(&dmxdevfilter->mutex); |
860 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
861 | return 0; |
862 | } | |
863 | ||
3256b36e | 864 | static inline void invert_mode(struct dmx_filter *filter) |
1da177e4 LT |
865 | { |
866 | int i; | |
867 | ||
f705e6e4 AO |
868 | for (i = 0; i < DMX_FILTER_SIZE; i++) |
869 | filter->mode[i] ^= 0xff; | |
1da177e4 LT |
870 | } |
871 | ||
1cb662a3 AO |
872 | static int dvb_dmxdev_add_pid(struct dmxdev *dmxdev, |
873 | struct dmxdev_filter *filter, u16 pid) | |
874 | { | |
875 | struct dmxdev_feed *feed; | |
876 | ||
877 | if ((filter->type != DMXDEV_TYPE_PES) || | |
878 | (filter->state < DMXDEV_STATE_SET)) | |
879 | return -EINVAL; | |
880 | ||
881 | /* only TS packet filters may have multiple PIDs */ | |
882 | if ((filter->params.pes.output != DMX_OUT_TSDEMUX_TAP) && | |
883 | (!list_empty(&filter->feed.ts))) | |
884 | return -EINVAL; | |
885 | ||
886 | feed = kzalloc(sizeof(struct dmxdev_feed), GFP_KERNEL); | |
887 | if (feed == NULL) | |
888 | return -ENOMEM; | |
889 | ||
890 | feed->pid = pid; | |
891 | list_add(&feed->next, &filter->feed.ts); | |
892 | ||
893 | if (filter->state >= DMXDEV_STATE_GO) | |
894 | return dvb_dmxdev_start_feed(dmxdev, filter, feed); | |
895 | ||
896 | return 0; | |
897 | } | |
898 | ||
899 | static int dvb_dmxdev_remove_pid(struct dmxdev *dmxdev, | |
900 | struct dmxdev_filter *filter, u16 pid) | |
901 | { | |
902 | struct dmxdev_feed *feed, *tmp; | |
903 | ||
904 | if ((filter->type != DMXDEV_TYPE_PES) || | |
905 | (filter->state < DMXDEV_STATE_SET)) | |
906 | return -EINVAL; | |
907 | ||
908 | list_for_each_entry_safe(feed, tmp, &filter->feed.ts, next) { | |
909 | if ((feed->pid == pid) && (feed->ts != NULL)) { | |
910 | feed->ts->stop_filtering(feed->ts); | |
911 | filter->dev->demux->release_ts_feed(filter->dev->demux, | |
912 | feed->ts); | |
913 | list_del(&feed->next); | |
914 | kfree(feed); | |
915 | } | |
916 | } | |
917 | ||
918 | return 0; | |
919 | } | |
920 | ||
1da177e4 | 921 | static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev, |
f705e6e4 AO |
922 | struct dmxdev_filter *dmxdevfilter, |
923 | struct dmx_sct_filter_params *params) | |
1da177e4 | 924 | { |
b3ad24d2 | 925 | dprintk("%s: PID=0x%04x, flags=%02x, timeout=%d\n", |
17e67d4c | 926 | __func__, params->pid, params->flags, params->timeout); |
1da177e4 LT |
927 | |
928 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
929 | ||
f705e6e4 | 930 | dmxdevfilter->type = DMXDEV_TYPE_SEC; |
1da177e4 LT |
931 | memcpy(&dmxdevfilter->params.sec, |
932 | params, sizeof(struct dmx_sct_filter_params)); | |
933 | invert_mode(&dmxdevfilter->params.sec.filter); | |
934 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
935 | ||
f705e6e4 | 936 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
937 | return dvb_dmxdev_filter_start(dmxdevfilter); |
938 | ||
939 | return 0; | |
940 | } | |
941 | ||
942 | static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev, | |
f705e6e4 AO |
943 | struct dmxdev_filter *dmxdevfilter, |
944 | struct dmx_pes_filter_params *params) | |
1da177e4 | 945 | { |
1cb662a3 AO |
946 | int ret; |
947 | ||
1da177e4 | 948 | dvb_dmxdev_filter_stop(dmxdevfilter); |
1cb662a3 | 949 | dvb_dmxdev_filter_reset(dmxdevfilter); |
1da177e4 | 950 | |
e90bbacd | 951 | if ((unsigned int)params->pes_type > DMX_PES_OTHER) |
1da177e4 LT |
952 | return -EINVAL; |
953 | ||
f705e6e4 AO |
954 | dmxdevfilter->type = DMXDEV_TYPE_PES; |
955 | memcpy(&dmxdevfilter->params, params, | |
956 | sizeof(struct dmx_pes_filter_params)); | |
691c9ae0 | 957 | INIT_LIST_HEAD(&dmxdevfilter->feed.ts); |
1da177e4 LT |
958 | |
959 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
960 | ||
1cb662a3 AO |
961 | ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, |
962 | dmxdevfilter->params.pes.pid); | |
963 | if (ret < 0) | |
964 | return ret; | |
965 | ||
f705e6e4 | 966 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
967 | return dvb_dmxdev_filter_start(dmxdevfilter); |
968 | ||
969 | return 0; | |
970 | } | |
971 | ||
972 | static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil, | |
f705e6e4 AO |
973 | struct file *file, char __user *buf, |
974 | size_t count, loff_t *ppos) | |
1da177e4 LT |
975 | { |
976 | int result, hcount; | |
f705e6e4 AO |
977 | int done = 0; |
978 | ||
979 | if (dfil->todo <= 0) { | |
980 | hcount = 3 + dfil->todo; | |
981 | if (hcount > count) | |
982 | hcount = count; | |
983 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
984 | file->f_flags & O_NONBLOCK, | |
985 | buf, hcount, ppos); | |
986 | if (result < 0) { | |
987 | dfil->todo = 0; | |
1da177e4 LT |
988 | return result; |
989 | } | |
f705e6e4 | 990 | if (copy_from_user(dfil->secheader - dfil->todo, buf, result)) |
1da177e4 | 991 | return -EFAULT; |
f705e6e4 AO |
992 | buf += result; |
993 | done = result; | |
994 | count -= result; | |
995 | dfil->todo -= result; | |
996 | if (dfil->todo > -3) | |
1da177e4 | 997 | return done; |
f705e6e4 | 998 | dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff; |
1da177e4 LT |
999 | if (!count) |
1000 | return done; | |
1001 | } | |
f705e6e4 AO |
1002 | if (count > dfil->todo) |
1003 | count = dfil->todo; | |
1004 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
1005 | file->f_flags & O_NONBLOCK, | |
1006 | buf, count, ppos); | |
1007 | if (result < 0) | |
1da177e4 | 1008 | return result; |
f705e6e4 AO |
1009 | dfil->todo -= result; |
1010 | return (result + done); | |
1da177e4 LT |
1011 | } |
1012 | ||
1da177e4 | 1013 | static ssize_t |
f705e6e4 AO |
1014 | dvb_demux_read(struct file *file, char __user *buf, size_t count, |
1015 | loff_t *ppos) | |
1da177e4 | 1016 | { |
f705e6e4 AO |
1017 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1018 | int ret; | |
1da177e4 | 1019 | |
3593cab5 | 1020 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) |
1da177e4 LT |
1021 | return -ERESTARTSYS; |
1022 | ||
f705e6e4 AO |
1023 | if (dmxdevfilter->type == DMXDEV_TYPE_SEC) |
1024 | ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos); | |
1da177e4 | 1025 | else |
f705e6e4 AO |
1026 | ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer, |
1027 | file->f_flags & O_NONBLOCK, | |
1028 | buf, count, ppos); | |
1da177e4 | 1029 | |
3593cab5 | 1030 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
1031 | return ret; |
1032 | } | |
1033 | ||
16ef8def | 1034 | static int dvb_demux_do_ioctl(struct file *file, |
1da177e4 LT |
1035 | unsigned int cmd, void *parg) |
1036 | { | |
3ec4a307 | 1037 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
f705e6e4 AO |
1038 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
1039 | unsigned long arg = (unsigned long)parg; | |
1040 | int ret = 0; | |
1da177e4 | 1041 | |
3593cab5 | 1042 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
1043 | return -ERESTARTSYS; |
1044 | ||
1045 | switch (cmd) { | |
1046 | case DMX_START: | |
3593cab5 IM |
1047 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
1048 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
1049 | return -ERESTARTSYS; |
1050 | } | |
f705e6e4 | 1051 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
1052 | ret = -EINVAL; |
1053 | else | |
1054 | ret = dvb_dmxdev_filter_start(dmxdevfilter); | |
3593cab5 | 1055 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
1056 | break; |
1057 | ||
1058 | case DMX_STOP: | |
3593cab5 IM |
1059 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
1060 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
1061 | return -ERESTARTSYS; |
1062 | } | |
f705e6e4 | 1063 | ret = dvb_dmxdev_filter_stop(dmxdevfilter); |
3593cab5 | 1064 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
1065 | break; |
1066 | ||
1067 | case DMX_SET_FILTER: | |
3593cab5 IM |
1068 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
1069 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
1070 | return -ERESTARTSYS; |
1071 | } | |
f705e6e4 | 1072 | ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 1073 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
1074 | break; |
1075 | ||
1076 | case DMX_SET_PES_FILTER: | |
3593cab5 IM |
1077 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
1078 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
1079 | return -ERESTARTSYS; |
1080 | } | |
f705e6e4 | 1081 | ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 1082 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
1083 | break; |
1084 | ||
1085 | case DMX_SET_BUFFER_SIZE: | |
3593cab5 IM |
1086 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
1087 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
1088 | return -ERESTARTSYS; |
1089 | } | |
f705e6e4 | 1090 | ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg); |
3593cab5 | 1091 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
1092 | break; |
1093 | ||
1da177e4 LT |
1094 | case DMX_GET_PES_PIDS: |
1095 | if (!dmxdev->demux->get_pes_pids) { | |
f705e6e4 | 1096 | ret = -EINVAL; |
1da177e4 LT |
1097 | break; |
1098 | } | |
f705e6e4 | 1099 | dmxdev->demux->get_pes_pids(dmxdev->demux, parg); |
1da177e4 LT |
1100 | break; |
1101 | ||
1102 | case DMX_GET_STC: | |
1103 | if (!dmxdev->demux->get_stc) { | |
f705e6e4 | 1104 | ret = -EINVAL; |
1da177e4 LT |
1105 | break; |
1106 | } | |
1107 | ret = dmxdev->demux->get_stc(dmxdev->demux, | |
f705e6e4 AO |
1108 | ((struct dmx_stc *)parg)->num, |
1109 | &((struct dmx_stc *)parg)->stc, | |
1110 | &((struct dmx_stc *)parg)->base); | |
1da177e4 LT |
1111 | break; |
1112 | ||
1cb662a3 AO |
1113 | case DMX_ADD_PID: |
1114 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { | |
1115 | ret = -ERESTARTSYS; | |
1116 | break; | |
1117 | } | |
1118 | ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, *(u16 *)parg); | |
1119 | mutex_unlock(&dmxdevfilter->mutex); | |
1120 | break; | |
1121 | ||
1122 | case DMX_REMOVE_PID: | |
1123 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { | |
1124 | ret = -ERESTARTSYS; | |
1125 | break; | |
1126 | } | |
1127 | ret = dvb_dmxdev_remove_pid(dmxdev, dmxdevfilter, *(u16 *)parg); | |
1128 | mutex_unlock(&dmxdevfilter->mutex); | |
1129 | break; | |
1130 | ||
ec5b1004 | 1131 | #ifdef CONFIG_DVB_MMAP |
57868acc SST |
1132 | case DMX_REQBUFS: |
1133 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { | |
1134 | mutex_unlock(&dmxdev->mutex); | |
1135 | return -ERESTARTSYS; | |
1136 | } | |
1137 | ret = dvb_vb2_reqbufs(&dmxdevfilter->vb2_ctx, parg); | |
1138 | mutex_unlock(&dmxdevfilter->mutex); | |
1139 | break; | |
1140 | ||
1141 | case DMX_QUERYBUF: | |
1142 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { | |
1143 | mutex_unlock(&dmxdev->mutex); | |
1144 | return -ERESTARTSYS; | |
1145 | } | |
1146 | ret = dvb_vb2_querybuf(&dmxdevfilter->vb2_ctx, parg); | |
1147 | mutex_unlock(&dmxdevfilter->mutex); | |
1148 | break; | |
1149 | ||
1150 | case DMX_EXPBUF: | |
1151 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { | |
1152 | mutex_unlock(&dmxdev->mutex); | |
1153 | return -ERESTARTSYS; | |
1154 | } | |
1155 | ret = dvb_vb2_expbuf(&dmxdevfilter->vb2_ctx, parg); | |
1156 | mutex_unlock(&dmxdevfilter->mutex); | |
1157 | break; | |
1158 | ||
1159 | case DMX_QBUF: | |
1160 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { | |
1161 | mutex_unlock(&dmxdev->mutex); | |
1162 | return -ERESTARTSYS; | |
1163 | } | |
1164 | ret = dvb_vb2_qbuf(&dmxdevfilter->vb2_ctx, parg); | |
1165 | if (ret == 0 && !dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx)) | |
1166 | ret = dvb_vb2_stream_on(&dmxdevfilter->vb2_ctx); | |
1167 | mutex_unlock(&dmxdevfilter->mutex); | |
1168 | break; | |
1169 | ||
1170 | case DMX_DQBUF: | |
1171 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { | |
1172 | mutex_unlock(&dmxdev->mutex); | |
1173 | return -ERESTARTSYS; | |
1174 | } | |
1175 | ret = dvb_vb2_dqbuf(&dmxdevfilter->vb2_ctx, parg); | |
1176 | mutex_unlock(&dmxdevfilter->mutex); | |
1177 | break; | |
4021053e | 1178 | #endif |
1da177e4 | 1179 | default: |
a145f64c | 1180 | ret = -ENOTTY; |
f705e6e4 | 1181 | break; |
1da177e4 | 1182 | } |
3593cab5 | 1183 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
1184 | return ret; |
1185 | } | |
1186 | ||
16ef8def AB |
1187 | static long dvb_demux_ioctl(struct file *file, unsigned int cmd, |
1188 | unsigned long arg) | |
1da177e4 | 1189 | { |
72024f1e | 1190 | return dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl); |
1da177e4 LT |
1191 | } |
1192 | ||
c23e0cb8 | 1193 | static __poll_t dvb_demux_poll(struct file *file, poll_table *wait) |
1da177e4 | 1194 | { |
3ec4a307 | 1195 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
c23e0cb8 | 1196 | __poll_t mask = 0; |
1da177e4 | 1197 | |
313ddec4 | 1198 | if ((!dmxdevfilter) || dmxdevfilter->dev->exit) |
a9a08845 | 1199 | return EPOLLERR; |
57868acc SST |
1200 | if (dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx)) |
1201 | return dvb_vb2_poll(&dmxdevfilter->vb2_ctx, file, wait); | |
1da177e4 LT |
1202 | |
1203 | poll_wait(file, &dmxdevfilter->buffer.queue, wait); | |
1204 | ||
1205 | if (dmxdevfilter->state != DMXDEV_STATE_GO && | |
1206 | dmxdevfilter->state != DMXDEV_STATE_DONE && | |
1207 | dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT) | |
1208 | return 0; | |
1209 | ||
1210 | if (dmxdevfilter->buffer.error) | |
a9a08845 | 1211 | mask |= (EPOLLIN | EPOLLRDNORM | EPOLLPRI | EPOLLERR); |
1da177e4 | 1212 | |
34731df2 | 1213 | if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer)) |
a9a08845 | 1214 | mask |= (EPOLLIN | EPOLLRDNORM | EPOLLPRI); |
1da177e4 LT |
1215 | |
1216 | return mask; | |
1217 | } | |
1218 | ||
ec5b1004 | 1219 | #ifdef CONFIG_DVB_MMAP |
57868acc | 1220 | static int dvb_demux_mmap(struct file *file, struct vm_area_struct *vma) |
1da177e4 | 1221 | { |
3ec4a307 | 1222 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 | 1223 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
57868acc SST |
1224 | int ret; |
1225 | ||
0b23498a | 1226 | if (!dmxdev->may_do_mmap) |
fdbeb962 | 1227 | return -ENOTTY; |
0b23498a | 1228 | |
57868acc SST |
1229 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1230 | return -ERESTARTSYS; | |
1231 | ||
1232 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { | |
1233 | mutex_unlock(&dmxdev->mutex); | |
1234 | return -ERESTARTSYS; | |
1235 | } | |
1236 | ret = dvb_vb2_mmap(&dmxdevfilter->vb2_ctx, vma); | |
1da177e4 | 1237 | |
57868acc SST |
1238 | mutex_unlock(&dmxdevfilter->mutex); |
1239 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 | 1240 | |
57868acc SST |
1241 | return ret; |
1242 | } | |
4021053e | 1243 | #endif |
57868acc SST |
1244 | |
1245 | static int dvb_demux_release(struct inode *inode, struct file *file) | |
1246 | { | |
1247 | struct dmxdev_filter *dmxdevfilter = file->private_data; | |
1248 | struct dmxdev *dmxdev = dmxdevfilter->dev; | |
57861b43 MR |
1249 | int ret; |
1250 | ||
1251 | ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter); | |
1252 | ||
1253 | mutex_lock(&dmxdev->mutex); | |
1254 | dmxdev->dvbdev->users--; | |
e90bbacd | 1255 | if (dmxdev->dvbdev->users == 1 && dmxdev->exit == 1) { |
57861b43 MR |
1256 | mutex_unlock(&dmxdev->mutex); |
1257 | wake_up(&dmxdev->dvbdev->wait_queue); | |
1258 | } else | |
1259 | mutex_unlock(&dmxdev->mutex); | |
1260 | ||
1261 | return ret; | |
1da177e4 LT |
1262 | } |
1263 | ||
784e29d2 | 1264 | static const struct file_operations dvb_demux_fops = { |
f705e6e4 AO |
1265 | .owner = THIS_MODULE, |
1266 | .read = dvb_demux_read, | |
16ef8def | 1267 | .unlocked_ioctl = dvb_demux_ioctl, |
b5d32061 | 1268 | .compat_ioctl = dvb_demux_ioctl, |
f705e6e4 AO |
1269 | .open = dvb_demux_open, |
1270 | .release = dvb_demux_release, | |
1271 | .poll = dvb_demux_poll, | |
6038f373 | 1272 | .llseek = default_llseek, |
ec5b1004 | 1273 | #ifdef CONFIG_DVB_MMAP |
57868acc | 1274 | .mmap = dvb_demux_mmap, |
4021053e | 1275 | #endif |
1da177e4 LT |
1276 | }; |
1277 | ||
8afd52ef | 1278 | static const struct dvb_device dvbdev_demux = { |
f705e6e4 AO |
1279 | .priv = NULL, |
1280 | .users = 1, | |
1281 | .writers = 1, | |
8afd52ef | 1282 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) |
e4fd3bc5 | 1283 | .name = "dvb-demux", |
8afd52ef | 1284 | #endif |
f705e6e4 | 1285 | .fops = &dvb_demux_fops |
1da177e4 LT |
1286 | }; |
1287 | ||
16ef8def | 1288 | static int dvb_dvr_do_ioctl(struct file *file, |
f705e6e4 | 1289 | unsigned int cmd, void *parg) |
1da177e4 | 1290 | { |
0c53c70f JS |
1291 | struct dvb_device *dvbdev = file->private_data; |
1292 | struct dmxdev *dmxdev = dvbdev->priv; | |
a095be4b | 1293 | unsigned long arg = (unsigned long)parg; |
f705e6e4 | 1294 | int ret; |
1da177e4 | 1295 | |
3593cab5 | 1296 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
1297 | return -ERESTARTSYS; |
1298 | ||
1299 | switch (cmd) { | |
1300 | case DMX_SET_BUFFER_SIZE: | |
a095be4b | 1301 | ret = dvb_dvr_set_buffer_size(dmxdev, arg); |
1da177e4 LT |
1302 | break; |
1303 | ||
ec5b1004 | 1304 | #ifdef CONFIG_DVB_MMAP |
57868acc SST |
1305 | case DMX_REQBUFS: |
1306 | ret = dvb_vb2_reqbufs(&dmxdev->dvr_vb2_ctx, parg); | |
1307 | break; | |
1308 | ||
1309 | case DMX_QUERYBUF: | |
1310 | ret = dvb_vb2_querybuf(&dmxdev->dvr_vb2_ctx, parg); | |
1311 | break; | |
1312 | ||
1313 | case DMX_EXPBUF: | |
1314 | ret = dvb_vb2_expbuf(&dmxdev->dvr_vb2_ctx, parg); | |
1315 | break; | |
1316 | ||
1317 | case DMX_QBUF: | |
1318 | ret = dvb_vb2_qbuf(&dmxdev->dvr_vb2_ctx, parg); | |
1319 | if (ret == 0 && !dvb_vb2_is_streaming(&dmxdev->dvr_vb2_ctx)) | |
1320 | ret = dvb_vb2_stream_on(&dmxdev->dvr_vb2_ctx); | |
1321 | break; | |
1322 | ||
1323 | case DMX_DQBUF: | |
1324 | ret = dvb_vb2_dqbuf(&dmxdev->dvr_vb2_ctx, parg); | |
1325 | break; | |
4021053e | 1326 | #endif |
1da177e4 | 1327 | default: |
fdbeb962 | 1328 | ret = -ENOTTY; |
f705e6e4 | 1329 | break; |
1da177e4 | 1330 | } |
3593cab5 | 1331 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
1332 | return ret; |
1333 | } | |
1334 | ||
16ef8def | 1335 | static long dvb_dvr_ioctl(struct file *file, |
f705e6e4 | 1336 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1337 | { |
72024f1e | 1338 | return dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl); |
1da177e4 LT |
1339 | } |
1340 | ||
c23e0cb8 | 1341 | static __poll_t dvb_dvr_poll(struct file *file, poll_table *wait) |
1da177e4 | 1342 | { |
0c53c70f JS |
1343 | struct dvb_device *dvbdev = file->private_data; |
1344 | struct dmxdev *dmxdev = dvbdev->priv; | |
c23e0cb8 | 1345 | __poll_t mask = 0; |
1da177e4 | 1346 | |
b3ad24d2 | 1347 | dprintk("%s\n", __func__); |
1da177e4 | 1348 | |
d102cac8 | 1349 | if (dmxdev->exit) |
a9a08845 | 1350 | return EPOLLERR; |
57868acc SST |
1351 | if (dvb_vb2_is_streaming(&dmxdev->dvr_vb2_ctx)) |
1352 | return dvb_vb2_poll(&dmxdev->dvr_vb2_ctx, file, wait); | |
d102cac8 | 1353 | |
1da177e4 LT |
1354 | poll_wait(file, &dmxdev->dvr_buffer.queue, wait); |
1355 | ||
0b23498a MCC |
1356 | if (((file->f_flags & O_ACCMODE) == O_RDONLY) || |
1357 | dmxdev->may_do_mmap) { | |
1da177e4 | 1358 | if (dmxdev->dvr_buffer.error) |
a9a08845 | 1359 | mask |= (EPOLLIN | EPOLLRDNORM | EPOLLPRI | EPOLLERR); |
1da177e4 | 1360 | |
34731df2 | 1361 | if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer)) |
a9a08845 | 1362 | mask |= (EPOLLIN | EPOLLRDNORM | EPOLLPRI); |
1da177e4 | 1363 | } else |
a9a08845 | 1364 | mask |= (EPOLLOUT | EPOLLWRNORM | EPOLLPRI); |
1da177e4 LT |
1365 | |
1366 | return mask; | |
1367 | } | |
1368 | ||
ec5b1004 | 1369 | #ifdef CONFIG_DVB_MMAP |
57868acc SST |
1370 | static int dvb_dvr_mmap(struct file *file, struct vm_area_struct *vma) |
1371 | { | |
1372 | struct dvb_device *dvbdev = file->private_data; | |
1373 | struct dmxdev *dmxdev = dvbdev->priv; | |
1374 | int ret; | |
1375 | ||
0b23498a | 1376 | if (!dmxdev->may_do_mmap) |
fdbeb962 | 1377 | return -ENOTTY; |
0b23498a | 1378 | |
57868acc SST |
1379 | if (dmxdev->exit) |
1380 | return -ENODEV; | |
1381 | ||
1382 | if (mutex_lock_interruptible(&dmxdev->mutex)) | |
1383 | return -ERESTARTSYS; | |
1384 | ||
1385 | ret = dvb_vb2_mmap(&dmxdev->dvr_vb2_ctx, vma); | |
1386 | mutex_unlock(&dmxdev->mutex); | |
1387 | return ret; | |
1388 | } | |
4021053e | 1389 | #endif |
57868acc | 1390 | |
828c0950 | 1391 | static const struct file_operations dvb_dvr_fops = { |
f705e6e4 AO |
1392 | .owner = THIS_MODULE, |
1393 | .read = dvb_dvr_read, | |
1394 | .write = dvb_dvr_write, | |
16ef8def | 1395 | .unlocked_ioctl = dvb_dvr_ioctl, |
f705e6e4 AO |
1396 | .open = dvb_dvr_open, |
1397 | .release = dvb_dvr_release, | |
1398 | .poll = dvb_dvr_poll, | |
6038f373 | 1399 | .llseek = default_llseek, |
ec5b1004 | 1400 | #ifdef CONFIG_DVB_MMAP |
57868acc | 1401 | .mmap = dvb_dvr_mmap, |
4021053e | 1402 | #endif |
1da177e4 LT |
1403 | }; |
1404 | ||
8afd52ef | 1405 | static const struct dvb_device dvbdev_dvr = { |
f705e6e4 | 1406 | .priv = NULL, |
5e85bd05 | 1407 | .readers = 1, |
57861b43 | 1408 | .users = 1, |
8afd52ef | 1409 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) |
e4fd3bc5 | 1410 | .name = "dvb-dvr", |
8afd52ef | 1411 | #endif |
f705e6e4 | 1412 | .fops = &dvb_dvr_fops |
1da177e4 | 1413 | }; |
f705e6e4 | 1414 | int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) |
1da177e4 LT |
1415 | { |
1416 | int i; | |
1417 | ||
1418 | if (dmxdev->demux->open(dmxdev->demux) < 0) | |
1419 | return -EUSERS; | |
1420 | ||
42bc47b3 KC |
1421 | dmxdev->filter = vmalloc(array_size(sizeof(struct dmxdev_filter), |
1422 | dmxdev->filternum)); | |
1da177e4 LT |
1423 | if (!dmxdev->filter) |
1424 | return -ENOMEM; | |
1425 | ||
3593cab5 | 1426 | mutex_init(&dmxdev->mutex); |
1da177e4 | 1427 | spin_lock_init(&dmxdev->lock); |
f705e6e4 AO |
1428 | for (i = 0; i < dmxdev->filternum; i++) { |
1429 | dmxdev->filter[i].dev = dmxdev; | |
1430 | dmxdev->filter[i].buffer.data = NULL; | |
1431 | dvb_dmxdev_filter_state_set(&dmxdev->filter[i], | |
1432 | DMXDEV_STATE_FREE); | |
1da177e4 LT |
1433 | } |
1434 | ||
f705e6e4 | 1435 | dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, |
df2f94e5 | 1436 | DVB_DEVICE_DEMUX, dmxdev->filternum); |
f705e6e4 | 1437 | dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, |
df2f94e5 | 1438 | dmxdev, DVB_DEVICE_DVR, dmxdev->filternum); |
1da177e4 | 1439 | |
34731df2 | 1440 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192); |
1da177e4 LT |
1441 | |
1442 | return 0; | |
1443 | } | |
f705e6e4 | 1444 | |
1da177e4 LT |
1445 | EXPORT_SYMBOL(dvb_dmxdev_init); |
1446 | ||
f705e6e4 | 1447 | void dvb_dmxdev_release(struct dmxdev *dmxdev) |
1da177e4 | 1448 | { |
e90bbacd | 1449 | dmxdev->exit = 1; |
57861b43 MR |
1450 | if (dmxdev->dvbdev->users > 1) { |
1451 | wait_event(dmxdev->dvbdev->wait_queue, | |
e90bbacd | 1452 | dmxdev->dvbdev->users == 1); |
57861b43 MR |
1453 | } |
1454 | if (dmxdev->dvr_dvbdev->users > 1) { | |
1455 | wait_event(dmxdev->dvr_dvbdev->wait_queue, | |
e90bbacd | 1456 | dmxdev->dvr_dvbdev->users == 1); |
57861b43 MR |
1457 | } |
1458 | ||
1da177e4 LT |
1459 | dvb_unregister_device(dmxdev->dvbdev); |
1460 | dvb_unregister_device(dmxdev->dvr_dvbdev); | |
1461 | ||
1462 | vfree(dmxdev->filter); | |
f705e6e4 | 1463 | dmxdev->filter = NULL; |
1da177e4 LT |
1464 | dmxdev->demux->close(dmxdev->demux); |
1465 | } | |
f705e6e4 | 1466 | |
1da177e4 | 1467 | EXPORT_SYMBOL(dvb_dmxdev_release); |