Root/
1 | /* |
2 | * Abstract layer for MIDI v1.0 stream |
3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
4 | * |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation; either version 2 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | * |
20 | */ |
21 | |
22 | #include <sound/core.h> |
23 | #include <linux/major.h> |
24 | #include <linux/init.h> |
25 | #include <linux/sched.h> |
26 | #include <linux/slab.h> |
27 | #include <linux/time.h> |
28 | #include <linux/wait.h> |
29 | #include <linux/mutex.h> |
30 | #include <linux/moduleparam.h> |
31 | #include <linux/delay.h> |
32 | #include <sound/rawmidi.h> |
33 | #include <sound/info.h> |
34 | #include <sound/control.h> |
35 | #include <sound/minors.h> |
36 | #include <sound/initval.h> |
37 | |
38 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
39 | MODULE_DESCRIPTION("Midlevel RawMidi code for ALSA."); |
40 | MODULE_LICENSE("GPL"); |
41 | |
42 | #ifdef CONFIG_SND_OSSEMUL |
43 | static int midi_map[SNDRV_CARDS]; |
44 | static int amidi_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1}; |
45 | module_param_array(midi_map, int, NULL, 0444); |
46 | MODULE_PARM_DESC(midi_map, "Raw MIDI device number assigned to 1st OSS device."); |
47 | module_param_array(amidi_map, int, NULL, 0444); |
48 | MODULE_PARM_DESC(amidi_map, "Raw MIDI device number assigned to 2nd OSS device."); |
49 | #endif /* CONFIG_SND_OSSEMUL */ |
50 | |
51 | static int snd_rawmidi_free(struct snd_rawmidi *rawmidi); |
52 | static int snd_rawmidi_dev_free(struct snd_device *device); |
53 | static int snd_rawmidi_dev_register(struct snd_device *device); |
54 | static int snd_rawmidi_dev_disconnect(struct snd_device *device); |
55 | |
56 | static LIST_HEAD(snd_rawmidi_devices); |
57 | static DEFINE_MUTEX(register_mutex); |
58 | |
59 | static struct snd_rawmidi *snd_rawmidi_search(struct snd_card *card, int device) |
60 | { |
61 | struct snd_rawmidi *rawmidi; |
62 | |
63 | list_for_each_entry(rawmidi, &snd_rawmidi_devices, list) |
64 | if (rawmidi->card == card && rawmidi->device == device) |
65 | return rawmidi; |
66 | return NULL; |
67 | } |
68 | |
69 | static inline unsigned short snd_rawmidi_file_flags(struct file *file) |
70 | { |
71 | switch (file->f_mode & (FMODE_READ | FMODE_WRITE)) { |
72 | case FMODE_WRITE: |
73 | return SNDRV_RAWMIDI_LFLG_OUTPUT; |
74 | case FMODE_READ: |
75 | return SNDRV_RAWMIDI_LFLG_INPUT; |
76 | default: |
77 | return SNDRV_RAWMIDI_LFLG_OPEN; |
78 | } |
79 | } |
80 | |
81 | static inline int snd_rawmidi_ready(struct snd_rawmidi_substream *substream) |
82 | { |
83 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
84 | return runtime->avail >= runtime->avail_min; |
85 | } |
86 | |
87 | static inline int snd_rawmidi_ready_append(struct snd_rawmidi_substream *substream, |
88 | size_t count) |
89 | { |
90 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
91 | return runtime->avail >= runtime->avail_min && |
92 | (!substream->append || runtime->avail >= count); |
93 | } |
94 | |
95 | static void snd_rawmidi_input_event_tasklet(unsigned long data) |
96 | { |
97 | struct snd_rawmidi_substream *substream = (struct snd_rawmidi_substream *)data; |
98 | substream->runtime->event(substream); |
99 | } |
100 | |
101 | static void snd_rawmidi_output_trigger_tasklet(unsigned long data) |
102 | { |
103 | struct snd_rawmidi_substream *substream = (struct snd_rawmidi_substream *)data; |
104 | substream->ops->trigger(substream, 1); |
105 | } |
106 | |
107 | static int snd_rawmidi_runtime_create(struct snd_rawmidi_substream *substream) |
108 | { |
109 | struct snd_rawmidi_runtime *runtime; |
110 | |
111 | if ((runtime = kzalloc(sizeof(*runtime), GFP_KERNEL)) == NULL) |
112 | return -ENOMEM; |
113 | spin_lock_init(&runtime->lock); |
114 | init_waitqueue_head(&runtime->sleep); |
115 | if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT) |
116 | tasklet_init(&runtime->tasklet, |
117 | snd_rawmidi_input_event_tasklet, |
118 | (unsigned long)substream); |
119 | else |
120 | tasklet_init(&runtime->tasklet, |
121 | snd_rawmidi_output_trigger_tasklet, |
122 | (unsigned long)substream); |
123 | runtime->event = NULL; |
124 | runtime->buffer_size = PAGE_SIZE; |
125 | runtime->avail_min = 1; |
126 | if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT) |
127 | runtime->avail = 0; |
128 | else |
129 | runtime->avail = runtime->buffer_size; |
130 | if ((runtime->buffer = kmalloc(runtime->buffer_size, GFP_KERNEL)) == NULL) { |
131 | kfree(runtime); |
132 | return -ENOMEM; |
133 | } |
134 | runtime->appl_ptr = runtime->hw_ptr = 0; |
135 | substream->runtime = runtime; |
136 | return 0; |
137 | } |
138 | |
139 | static int snd_rawmidi_runtime_free(struct snd_rawmidi_substream *substream) |
140 | { |
141 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
142 | |
143 | kfree(runtime->buffer); |
144 | kfree(runtime); |
145 | substream->runtime = NULL; |
146 | return 0; |
147 | } |
148 | |
149 | static inline void snd_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,int up) |
150 | { |
151 | if (!substream->opened) |
152 | return; |
153 | if (up) { |
154 | tasklet_schedule(&substream->runtime->tasklet); |
155 | } else { |
156 | tasklet_kill(&substream->runtime->tasklet); |
157 | substream->ops->trigger(substream, 0); |
158 | } |
159 | } |
160 | |
161 | static void snd_rawmidi_input_trigger(struct snd_rawmidi_substream *substream, int up) |
162 | { |
163 | if (!substream->opened) |
164 | return; |
165 | substream->ops->trigger(substream, up); |
166 | if (!up && substream->runtime->event) |
167 | tasklet_kill(&substream->runtime->tasklet); |
168 | } |
169 | |
170 | int snd_rawmidi_drop_output(struct snd_rawmidi_substream *substream) |
171 | { |
172 | unsigned long flags; |
173 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
174 | |
175 | snd_rawmidi_output_trigger(substream, 0); |
176 | runtime->drain = 0; |
177 | spin_lock_irqsave(&runtime->lock, flags); |
178 | runtime->appl_ptr = runtime->hw_ptr = 0; |
179 | runtime->avail = runtime->buffer_size; |
180 | spin_unlock_irqrestore(&runtime->lock, flags); |
181 | return 0; |
182 | } |
183 | |
184 | int snd_rawmidi_drain_output(struct snd_rawmidi_substream *substream) |
185 | { |
186 | int err; |
187 | long timeout; |
188 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
189 | |
190 | err = 0; |
191 | runtime->drain = 1; |
192 | timeout = wait_event_interruptible_timeout(runtime->sleep, |
193 | (runtime->avail >= runtime->buffer_size), |
194 | 10*HZ); |
195 | if (signal_pending(current)) |
196 | err = -ERESTARTSYS; |
197 | if (runtime->avail < runtime->buffer_size && !timeout) { |
198 | snd_printk(KERN_WARNING "rawmidi drain error (avail = %li, buffer_size = %li)\n", (long)runtime->avail, (long)runtime->buffer_size); |
199 | err = -EIO; |
200 | } |
201 | runtime->drain = 0; |
202 | if (err != -ERESTARTSYS) { |
203 | /* we need wait a while to make sure that Tx FIFOs are empty */ |
204 | if (substream->ops->drain) |
205 | substream->ops->drain(substream); |
206 | else |
207 | msleep(50); |
208 | snd_rawmidi_drop_output(substream); |
209 | } |
210 | return err; |
211 | } |
212 | |
213 | int snd_rawmidi_drain_input(struct snd_rawmidi_substream *substream) |
214 | { |
215 | unsigned long flags; |
216 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
217 | |
218 | snd_rawmidi_input_trigger(substream, 0); |
219 | runtime->drain = 0; |
220 | spin_lock_irqsave(&runtime->lock, flags); |
221 | runtime->appl_ptr = runtime->hw_ptr = 0; |
222 | runtime->avail = 0; |
223 | spin_unlock_irqrestore(&runtime->lock, flags); |
224 | return 0; |
225 | } |
226 | |
227 | /* look for an available substream for the given stream direction; |
228 | * if a specific subdevice is given, try to assign it |
229 | */ |
230 | static int assign_substream(struct snd_rawmidi *rmidi, int subdevice, |
231 | int stream, int mode, |
232 | struct snd_rawmidi_substream **sub_ret) |
233 | { |
234 | struct snd_rawmidi_substream *substream; |
235 | struct snd_rawmidi_str *s = &rmidi->streams[stream]; |
236 | static unsigned int info_flags[2] = { |
237 | [SNDRV_RAWMIDI_STREAM_OUTPUT] = SNDRV_RAWMIDI_INFO_OUTPUT, |
238 | [SNDRV_RAWMIDI_STREAM_INPUT] = SNDRV_RAWMIDI_INFO_INPUT, |
239 | }; |
240 | |
241 | if (!(rmidi->info_flags & info_flags[stream])) |
242 | return -ENXIO; |
243 | if (subdevice >= 0 && subdevice >= s->substream_count) |
244 | return -ENODEV; |
245 | if (s->substream_opened >= s->substream_count) |
246 | return -EAGAIN; |
247 | |
248 | list_for_each_entry(substream, &s->substreams, list) { |
249 | if (substream->opened) { |
250 | if (stream == SNDRV_RAWMIDI_STREAM_INPUT || |
251 | !(mode & SNDRV_RAWMIDI_LFLG_APPEND) || |
252 | !substream->append) |
253 | continue; |
254 | } |
255 | if (subdevice < 0 || subdevice == substream->number) { |
256 | *sub_ret = substream; |
257 | return 0; |
258 | } |
259 | } |
260 | return -EAGAIN; |
261 | } |
262 | |
263 | /* open and do ref-counting for the given substream */ |
264 | static int open_substream(struct snd_rawmidi *rmidi, |
265 | struct snd_rawmidi_substream *substream, |
266 | int mode) |
267 | { |
268 | int err; |
269 | |
270 | if (substream->use_count == 0) { |
271 | err = snd_rawmidi_runtime_create(substream); |
272 | if (err < 0) |
273 | return err; |
274 | err = substream->ops->open(substream); |
275 | if (err < 0) { |
276 | snd_rawmidi_runtime_free(substream); |
277 | return err; |
278 | } |
279 | substream->opened = 1; |
280 | substream->active_sensing = 0; |
281 | if (mode & SNDRV_RAWMIDI_LFLG_APPEND) |
282 | substream->append = 1; |
283 | } |
284 | substream->use_count++; |
285 | rmidi->streams[substream->stream].substream_opened++; |
286 | return 0; |
287 | } |
288 | |
289 | static void close_substream(struct snd_rawmidi *rmidi, |
290 | struct snd_rawmidi_substream *substream, |
291 | int cleanup); |
292 | |
293 | static int rawmidi_open_priv(struct snd_rawmidi *rmidi, int subdevice, int mode, |
294 | struct snd_rawmidi_file *rfile) |
295 | { |
296 | struct snd_rawmidi_substream *sinput = NULL, *soutput = NULL; |
297 | int err; |
298 | |
299 | rfile->input = rfile->output = NULL; |
300 | if (mode & SNDRV_RAWMIDI_LFLG_INPUT) { |
301 | err = assign_substream(rmidi, subdevice, |
302 | SNDRV_RAWMIDI_STREAM_INPUT, |
303 | mode, &sinput); |
304 | if (err < 0) |
305 | return err; |
306 | } |
307 | if (mode & SNDRV_RAWMIDI_LFLG_OUTPUT) { |
308 | err = assign_substream(rmidi, subdevice, |
309 | SNDRV_RAWMIDI_STREAM_OUTPUT, |
310 | mode, &soutput); |
311 | if (err < 0) |
312 | return err; |
313 | } |
314 | |
315 | if (sinput) { |
316 | err = open_substream(rmidi, sinput, mode); |
317 | if (err < 0) |
318 | return err; |
319 | } |
320 | if (soutput) { |
321 | err = open_substream(rmidi, soutput, mode); |
322 | if (err < 0) { |
323 | if (sinput) |
324 | close_substream(rmidi, sinput, 0); |
325 | return err; |
326 | } |
327 | } |
328 | |
329 | rfile->rmidi = rmidi; |
330 | rfile->input = sinput; |
331 | rfile->output = soutput; |
332 | return 0; |
333 | } |
334 | |
335 | /* called from sound/core/seq/seq_midi.c */ |
336 | int snd_rawmidi_kernel_open(struct snd_card *card, int device, int subdevice, |
337 | int mode, struct snd_rawmidi_file * rfile) |
338 | { |
339 | struct snd_rawmidi *rmidi; |
340 | int err; |
341 | |
342 | if (snd_BUG_ON(!rfile)) |
343 | return -EINVAL; |
344 | |
345 | mutex_lock(®ister_mutex); |
346 | rmidi = snd_rawmidi_search(card, device); |
347 | if (rmidi == NULL) { |
348 | mutex_unlock(®ister_mutex); |
349 | return -ENODEV; |
350 | } |
351 | if (!try_module_get(rmidi->card->module)) { |
352 | mutex_unlock(®ister_mutex); |
353 | return -ENXIO; |
354 | } |
355 | mutex_unlock(®ister_mutex); |
356 | |
357 | mutex_lock(&rmidi->open_mutex); |
358 | err = rawmidi_open_priv(rmidi, subdevice, mode, rfile); |
359 | mutex_unlock(&rmidi->open_mutex); |
360 | if (err < 0) |
361 | module_put(rmidi->card->module); |
362 | return err; |
363 | } |
364 | |
365 | static int snd_rawmidi_open(struct inode *inode, struct file *file) |
366 | { |
367 | int maj = imajor(inode); |
368 | struct snd_card *card; |
369 | int subdevice; |
370 | unsigned short fflags; |
371 | int err; |
372 | struct snd_rawmidi *rmidi; |
373 | struct snd_rawmidi_file *rawmidi_file = NULL; |
374 | wait_queue_t wait; |
375 | struct snd_ctl_file *kctl; |
376 | |
377 | if ((file->f_flags & O_APPEND) && !(file->f_flags & O_NONBLOCK)) |
378 | return -EINVAL; /* invalid combination */ |
379 | |
380 | if (maj == snd_major) { |
381 | rmidi = snd_lookup_minor_data(iminor(inode), |
382 | SNDRV_DEVICE_TYPE_RAWMIDI); |
383 | #ifdef CONFIG_SND_OSSEMUL |
384 | } else if (maj == SOUND_MAJOR) { |
385 | rmidi = snd_lookup_oss_minor_data(iminor(inode), |
386 | SNDRV_OSS_DEVICE_TYPE_MIDI); |
387 | #endif |
388 | } else |
389 | return -ENXIO; |
390 | |
391 | if (rmidi == NULL) |
392 | return -ENODEV; |
393 | |
394 | if (!try_module_get(rmidi->card->module)) |
395 | return -ENXIO; |
396 | |
397 | mutex_lock(&rmidi->open_mutex); |
398 | card = rmidi->card; |
399 | err = snd_card_file_add(card, file); |
400 | if (err < 0) |
401 | goto __error_card; |
402 | fflags = snd_rawmidi_file_flags(file); |
403 | if ((file->f_flags & O_APPEND) || maj == SOUND_MAJOR) /* OSS emul? */ |
404 | fflags |= SNDRV_RAWMIDI_LFLG_APPEND; |
405 | rawmidi_file = kmalloc(sizeof(*rawmidi_file), GFP_KERNEL); |
406 | if (rawmidi_file == NULL) { |
407 | err = -ENOMEM; |
408 | goto __error; |
409 | } |
410 | init_waitqueue_entry(&wait, current); |
411 | add_wait_queue(&rmidi->open_wait, &wait); |
412 | while (1) { |
413 | subdevice = -1; |
414 | read_lock(&card->ctl_files_rwlock); |
415 | list_for_each_entry(kctl, &card->ctl_files, list) { |
416 | if (kctl->pid == current->pid) { |
417 | subdevice = kctl->prefer_rawmidi_subdevice; |
418 | if (subdevice != -1) |
419 | break; |
420 | } |
421 | } |
422 | read_unlock(&card->ctl_files_rwlock); |
423 | err = rawmidi_open_priv(rmidi, subdevice, fflags, rawmidi_file); |
424 | if (err >= 0) |
425 | break; |
426 | if (err == -EAGAIN) { |
427 | if (file->f_flags & O_NONBLOCK) { |
428 | err = -EBUSY; |
429 | break; |
430 | } |
431 | } else |
432 | break; |
433 | set_current_state(TASK_INTERRUPTIBLE); |
434 | mutex_unlock(&rmidi->open_mutex); |
435 | schedule(); |
436 | mutex_lock(&rmidi->open_mutex); |
437 | if (signal_pending(current)) { |
438 | err = -ERESTARTSYS; |
439 | break; |
440 | } |
441 | } |
442 | remove_wait_queue(&rmidi->open_wait, &wait); |
443 | if (err < 0) { |
444 | kfree(rawmidi_file); |
445 | goto __error; |
446 | } |
447 | #ifdef CONFIG_SND_OSSEMUL |
448 | if (rawmidi_file->input && rawmidi_file->input->runtime) |
449 | rawmidi_file->input->runtime->oss = (maj == SOUND_MAJOR); |
450 | if (rawmidi_file->output && rawmidi_file->output->runtime) |
451 | rawmidi_file->output->runtime->oss = (maj == SOUND_MAJOR); |
452 | #endif |
453 | file->private_data = rawmidi_file; |
454 | mutex_unlock(&rmidi->open_mutex); |
455 | return 0; |
456 | |
457 | __error: |
458 | snd_card_file_remove(card, file); |
459 | __error_card: |
460 | mutex_unlock(&rmidi->open_mutex); |
461 | module_put(rmidi->card->module); |
462 | return err; |
463 | } |
464 | |
465 | static void close_substream(struct snd_rawmidi *rmidi, |
466 | struct snd_rawmidi_substream *substream, |
467 | int cleanup) |
468 | { |
469 | rmidi->streams[substream->stream].substream_opened--; |
470 | if (--substream->use_count) |
471 | return; |
472 | |
473 | if (cleanup) { |
474 | if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT) |
475 | snd_rawmidi_input_trigger(substream, 0); |
476 | else { |
477 | if (substream->active_sensing) { |
478 | unsigned char buf = 0xfe; |
479 | /* sending single active sensing message |
480 | * to shut the device up |
481 | */ |
482 | snd_rawmidi_kernel_write(substream, &buf, 1); |
483 | } |
484 | if (snd_rawmidi_drain_output(substream) == -ERESTARTSYS) |
485 | snd_rawmidi_output_trigger(substream, 0); |
486 | } |
487 | } |
488 | substream->ops->close(substream); |
489 | if (substream->runtime->private_free) |
490 | substream->runtime->private_free(substream); |
491 | snd_rawmidi_runtime_free(substream); |
492 | substream->opened = 0; |
493 | substream->append = 0; |
494 | } |
495 | |
496 | static void rawmidi_release_priv(struct snd_rawmidi_file *rfile) |
497 | { |
498 | struct snd_rawmidi *rmidi; |
499 | |
500 | rmidi = rfile->rmidi; |
501 | mutex_lock(&rmidi->open_mutex); |
502 | if (rfile->input) { |
503 | close_substream(rmidi, rfile->input, 1); |
504 | rfile->input = NULL; |
505 | } |
506 | if (rfile->output) { |
507 | close_substream(rmidi, rfile->output, 1); |
508 | rfile->output = NULL; |
509 | } |
510 | rfile->rmidi = NULL; |
511 | mutex_unlock(&rmidi->open_mutex); |
512 | wake_up(&rmidi->open_wait); |
513 | } |
514 | |
515 | /* called from sound/core/seq/seq_midi.c */ |
516 | int snd_rawmidi_kernel_release(struct snd_rawmidi_file *rfile) |
517 | { |
518 | struct snd_rawmidi *rmidi; |
519 | |
520 | if (snd_BUG_ON(!rfile)) |
521 | return -ENXIO; |
522 | |
523 | rmidi = rfile->rmidi; |
524 | rawmidi_release_priv(rfile); |
525 | module_put(rmidi->card->module); |
526 | return 0; |
527 | } |
528 | |
529 | static int snd_rawmidi_release(struct inode *inode, struct file *file) |
530 | { |
531 | struct snd_rawmidi_file *rfile; |
532 | struct snd_rawmidi *rmidi; |
533 | |
534 | rfile = file->private_data; |
535 | rmidi = rfile->rmidi; |
536 | rawmidi_release_priv(rfile); |
537 | kfree(rfile); |
538 | snd_card_file_remove(rmidi->card, file); |
539 | module_put(rmidi->card->module); |
540 | return 0; |
541 | } |
542 | |
543 | static int snd_rawmidi_info(struct snd_rawmidi_substream *substream, |
544 | struct snd_rawmidi_info *info) |
545 | { |
546 | struct snd_rawmidi *rmidi; |
547 | |
548 | if (substream == NULL) |
549 | return -ENODEV; |
550 | rmidi = substream->rmidi; |
551 | memset(info, 0, sizeof(*info)); |
552 | info->card = rmidi->card->number; |
553 | info->device = rmidi->device; |
554 | info->subdevice = substream->number; |
555 | info->stream = substream->stream; |
556 | info->flags = rmidi->info_flags; |
557 | strcpy(info->id, rmidi->id); |
558 | strcpy(info->name, rmidi->name); |
559 | strcpy(info->subname, substream->name); |
560 | info->subdevices_count = substream->pstr->substream_count; |
561 | info->subdevices_avail = (substream->pstr->substream_count - |
562 | substream->pstr->substream_opened); |
563 | return 0; |
564 | } |
565 | |
566 | static int snd_rawmidi_info_user(struct snd_rawmidi_substream *substream, |
567 | struct snd_rawmidi_info __user * _info) |
568 | { |
569 | struct snd_rawmidi_info info; |
570 | int err; |
571 | if ((err = snd_rawmidi_info(substream, &info)) < 0) |
572 | return err; |
573 | if (copy_to_user(_info, &info, sizeof(struct snd_rawmidi_info))) |
574 | return -EFAULT; |
575 | return 0; |
576 | } |
577 | |
578 | int snd_rawmidi_info_select(struct snd_card *card, struct snd_rawmidi_info *info) |
579 | { |
580 | struct snd_rawmidi *rmidi; |
581 | struct snd_rawmidi_str *pstr; |
582 | struct snd_rawmidi_substream *substream; |
583 | |
584 | mutex_lock(®ister_mutex); |
585 | rmidi = snd_rawmidi_search(card, info->device); |
586 | mutex_unlock(®ister_mutex); |
587 | if (!rmidi) |
588 | return -ENXIO; |
589 | if (info->stream < 0 || info->stream > 1) |
590 | return -EINVAL; |
591 | pstr = &rmidi->streams[info->stream]; |
592 | if (pstr->substream_count == 0) |
593 | return -ENOENT; |
594 | if (info->subdevice >= pstr->substream_count) |
595 | return -ENXIO; |
596 | list_for_each_entry(substream, &pstr->substreams, list) { |
597 | if ((unsigned int)substream->number == info->subdevice) |
598 | return snd_rawmidi_info(substream, info); |
599 | } |
600 | return -ENXIO; |
601 | } |
602 | |
603 | static int snd_rawmidi_info_select_user(struct snd_card *card, |
604 | struct snd_rawmidi_info __user *_info) |
605 | { |
606 | int err; |
607 | struct snd_rawmidi_info info; |
608 | if (get_user(info.device, &_info->device)) |
609 | return -EFAULT; |
610 | if (get_user(info.stream, &_info->stream)) |
611 | return -EFAULT; |
612 | if (get_user(info.subdevice, &_info->subdevice)) |
613 | return -EFAULT; |
614 | if ((err = snd_rawmidi_info_select(card, &info)) < 0) |
615 | return err; |
616 | if (copy_to_user(_info, &info, sizeof(struct snd_rawmidi_info))) |
617 | return -EFAULT; |
618 | return 0; |
619 | } |
620 | |
621 | int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream, |
622 | struct snd_rawmidi_params * params) |
623 | { |
624 | char *newbuf; |
625 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
626 | |
627 | if (substream->append && substream->use_count > 1) |
628 | return -EBUSY; |
629 | snd_rawmidi_drain_output(substream); |
630 | if (params->buffer_size < 32 || params->buffer_size > 1024L * 1024L) { |
631 | return -EINVAL; |
632 | } |
633 | if (params->avail_min < 1 || params->avail_min > params->buffer_size) { |
634 | return -EINVAL; |
635 | } |
636 | if (params->buffer_size != runtime->buffer_size) { |
637 | newbuf = kmalloc(params->buffer_size, GFP_KERNEL); |
638 | if (!newbuf) |
639 | return -ENOMEM; |
640 | kfree(runtime->buffer); |
641 | runtime->buffer = newbuf; |
642 | runtime->buffer_size = params->buffer_size; |
643 | runtime->avail = runtime->buffer_size; |
644 | } |
645 | runtime->avail_min = params->avail_min; |
646 | substream->active_sensing = !params->no_active_sensing; |
647 | return 0; |
648 | } |
649 | |
650 | int snd_rawmidi_input_params(struct snd_rawmidi_substream *substream, |
651 | struct snd_rawmidi_params * params) |
652 | { |
653 | char *newbuf; |
654 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
655 | |
656 | snd_rawmidi_drain_input(substream); |
657 | if (params->buffer_size < 32 || params->buffer_size > 1024L * 1024L) { |
658 | return -EINVAL; |
659 | } |
660 | if (params->avail_min < 1 || params->avail_min > params->buffer_size) { |
661 | return -EINVAL; |
662 | } |
663 | if (params->buffer_size != runtime->buffer_size) { |
664 | newbuf = kmalloc(params->buffer_size, GFP_KERNEL); |
665 | if (!newbuf) |
666 | return -ENOMEM; |
667 | kfree(runtime->buffer); |
668 | runtime->buffer = newbuf; |
669 | runtime->buffer_size = params->buffer_size; |
670 | } |
671 | runtime->avail_min = params->avail_min; |
672 | return 0; |
673 | } |
674 | |
675 | static int snd_rawmidi_output_status(struct snd_rawmidi_substream *substream, |
676 | struct snd_rawmidi_status * status) |
677 | { |
678 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
679 | |
680 | memset(status, 0, sizeof(*status)); |
681 | status->stream = SNDRV_RAWMIDI_STREAM_OUTPUT; |
682 | spin_lock_irq(&runtime->lock); |
683 | status->avail = runtime->avail; |
684 | spin_unlock_irq(&runtime->lock); |
685 | return 0; |
686 | } |
687 | |
688 | static int snd_rawmidi_input_status(struct snd_rawmidi_substream *substream, |
689 | struct snd_rawmidi_status * status) |
690 | { |
691 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
692 | |
693 | memset(status, 0, sizeof(*status)); |
694 | status->stream = SNDRV_RAWMIDI_STREAM_INPUT; |
695 | spin_lock_irq(&runtime->lock); |
696 | status->avail = runtime->avail; |
697 | status->xruns = runtime->xruns; |
698 | runtime->xruns = 0; |
699 | spin_unlock_irq(&runtime->lock); |
700 | return 0; |
701 | } |
702 | |
703 | static long snd_rawmidi_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
704 | { |
705 | struct snd_rawmidi_file *rfile; |
706 | void __user *argp = (void __user *)arg; |
707 | |
708 | rfile = file->private_data; |
709 | if (((cmd >> 8) & 0xff) != 'W') |
710 | return -ENOTTY; |
711 | switch (cmd) { |
712 | case SNDRV_RAWMIDI_IOCTL_PVERSION: |
713 | return put_user(SNDRV_RAWMIDI_VERSION, (int __user *)argp) ? -EFAULT : 0; |
714 | case SNDRV_RAWMIDI_IOCTL_INFO: |
715 | { |
716 | int stream; |
717 | struct snd_rawmidi_info __user *info = argp; |
718 | if (get_user(stream, &info->stream)) |
719 | return -EFAULT; |
720 | switch (stream) { |
721 | case SNDRV_RAWMIDI_STREAM_INPUT: |
722 | return snd_rawmidi_info_user(rfile->input, info); |
723 | case SNDRV_RAWMIDI_STREAM_OUTPUT: |
724 | return snd_rawmidi_info_user(rfile->output, info); |
725 | default: |
726 | return -EINVAL; |
727 | } |
728 | } |
729 | case SNDRV_RAWMIDI_IOCTL_PARAMS: |
730 | { |
731 | struct snd_rawmidi_params params; |
732 | if (copy_from_user(¶ms, argp, sizeof(struct snd_rawmidi_params))) |
733 | return -EFAULT; |
734 | switch (params.stream) { |
735 | case SNDRV_RAWMIDI_STREAM_OUTPUT: |
736 | if (rfile->output == NULL) |
737 | return -EINVAL; |
738 | return snd_rawmidi_output_params(rfile->output, ¶ms); |
739 | case SNDRV_RAWMIDI_STREAM_INPUT: |
740 | if (rfile->input == NULL) |
741 | return -EINVAL; |
742 | return snd_rawmidi_input_params(rfile->input, ¶ms); |
743 | default: |
744 | return -EINVAL; |
745 | } |
746 | } |
747 | case SNDRV_RAWMIDI_IOCTL_STATUS: |
748 | { |
749 | int err = 0; |
750 | struct snd_rawmidi_status status; |
751 | if (copy_from_user(&status, argp, sizeof(struct snd_rawmidi_status))) |
752 | return -EFAULT; |
753 | switch (status.stream) { |
754 | case SNDRV_RAWMIDI_STREAM_OUTPUT: |
755 | if (rfile->output == NULL) |
756 | return -EINVAL; |
757 | err = snd_rawmidi_output_status(rfile->output, &status); |
758 | break; |
759 | case SNDRV_RAWMIDI_STREAM_INPUT: |
760 | if (rfile->input == NULL) |
761 | return -EINVAL; |
762 | err = snd_rawmidi_input_status(rfile->input, &status); |
763 | break; |
764 | default: |
765 | return -EINVAL; |
766 | } |
767 | if (err < 0) |
768 | return err; |
769 | if (copy_to_user(argp, &status, sizeof(struct snd_rawmidi_status))) |
770 | return -EFAULT; |
771 | return 0; |
772 | } |
773 | case SNDRV_RAWMIDI_IOCTL_DROP: |
774 | { |
775 | int val; |
776 | if (get_user(val, (int __user *) argp)) |
777 | return -EFAULT; |
778 | switch (val) { |
779 | case SNDRV_RAWMIDI_STREAM_OUTPUT: |
780 | if (rfile->output == NULL) |
781 | return -EINVAL; |
782 | return snd_rawmidi_drop_output(rfile->output); |
783 | default: |
784 | return -EINVAL; |
785 | } |
786 | } |
787 | case SNDRV_RAWMIDI_IOCTL_DRAIN: |
788 | { |
789 | int val; |
790 | if (get_user(val, (int __user *) argp)) |
791 | return -EFAULT; |
792 | switch (val) { |
793 | case SNDRV_RAWMIDI_STREAM_OUTPUT: |
794 | if (rfile->output == NULL) |
795 | return -EINVAL; |
796 | return snd_rawmidi_drain_output(rfile->output); |
797 | case SNDRV_RAWMIDI_STREAM_INPUT: |
798 | if (rfile->input == NULL) |
799 | return -EINVAL; |
800 | return snd_rawmidi_drain_input(rfile->input); |
801 | default: |
802 | return -EINVAL; |
803 | } |
804 | } |
805 | #ifdef CONFIG_SND_DEBUG |
806 | default: |
807 | snd_printk(KERN_WARNING "rawmidi: unknown command = 0x%x\n", cmd); |
808 | #endif |
809 | } |
810 | return -ENOTTY; |
811 | } |
812 | |
813 | static int snd_rawmidi_control_ioctl(struct snd_card *card, |
814 | struct snd_ctl_file *control, |
815 | unsigned int cmd, |
816 | unsigned long arg) |
817 | { |
818 | void __user *argp = (void __user *)arg; |
819 | |
820 | switch (cmd) { |
821 | case SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE: |
822 | { |
823 | int device; |
824 | |
825 | if (get_user(device, (int __user *)argp)) |
826 | return -EFAULT; |
827 | mutex_lock(®ister_mutex); |
828 | device = device < 0 ? 0 : device + 1; |
829 | while (device < SNDRV_RAWMIDI_DEVICES) { |
830 | if (snd_rawmidi_search(card, device)) |
831 | break; |
832 | device++; |
833 | } |
834 | if (device == SNDRV_RAWMIDI_DEVICES) |
835 | device = -1; |
836 | mutex_unlock(®ister_mutex); |
837 | if (put_user(device, (int __user *)argp)) |
838 | return -EFAULT; |
839 | return 0; |
840 | } |
841 | case SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE: |
842 | { |
843 | int val; |
844 | |
845 | if (get_user(val, (int __user *)argp)) |
846 | return -EFAULT; |
847 | control->prefer_rawmidi_subdevice = val; |
848 | return 0; |
849 | } |
850 | case SNDRV_CTL_IOCTL_RAWMIDI_INFO: |
851 | return snd_rawmidi_info_select_user(card, argp); |
852 | } |
853 | return -ENOIOCTLCMD; |
854 | } |
855 | |
856 | /** |
857 | * snd_rawmidi_receive - receive the input data from the device |
858 | * @substream: the rawmidi substream |
859 | * @buffer: the buffer pointer |
860 | * @count: the data size to read |
861 | * |
862 | * Reads the data from the internal buffer. |
863 | * |
864 | * Returns the size of read data, or a negative error code on failure. |
865 | */ |
866 | int snd_rawmidi_receive(struct snd_rawmidi_substream *substream, |
867 | const unsigned char *buffer, int count) |
868 | { |
869 | unsigned long flags; |
870 | int result = 0, count1; |
871 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
872 | |
873 | if (!substream->opened) |
874 | return -EBADFD; |
875 | if (runtime->buffer == NULL) { |
876 | snd_printd("snd_rawmidi_receive: input is not active!!!\n"); |
877 | return -EINVAL; |
878 | } |
879 | spin_lock_irqsave(&runtime->lock, flags); |
880 | if (count == 1) { /* special case, faster code */ |
881 | substream->bytes++; |
882 | if (runtime->avail < runtime->buffer_size) { |
883 | runtime->buffer[runtime->hw_ptr++] = buffer[0]; |
884 | runtime->hw_ptr %= runtime->buffer_size; |
885 | runtime->avail++; |
886 | result++; |
887 | } else { |
888 | runtime->xruns++; |
889 | } |
890 | } else { |
891 | substream->bytes += count; |
892 | count1 = runtime->buffer_size - runtime->hw_ptr; |
893 | if (count1 > count) |
894 | count1 = count; |
895 | if (count1 > (int)(runtime->buffer_size - runtime->avail)) |
896 | count1 = runtime->buffer_size - runtime->avail; |
897 | memcpy(runtime->buffer + runtime->hw_ptr, buffer, count1); |
898 | runtime->hw_ptr += count1; |
899 | runtime->hw_ptr %= runtime->buffer_size; |
900 | runtime->avail += count1; |
901 | count -= count1; |
902 | result += count1; |
903 | if (count > 0) { |
904 | buffer += count1; |
905 | count1 = count; |
906 | if (count1 > (int)(runtime->buffer_size - runtime->avail)) { |
907 | count1 = runtime->buffer_size - runtime->avail; |
908 | runtime->xruns += count - count1; |
909 | } |
910 | if (count1 > 0) { |
911 | memcpy(runtime->buffer, buffer, count1); |
912 | runtime->hw_ptr = count1; |
913 | runtime->avail += count1; |
914 | result += count1; |
915 | } |
916 | } |
917 | } |
918 | if (result > 0) { |
919 | if (runtime->event) |
920 | tasklet_schedule(&runtime->tasklet); |
921 | else if (snd_rawmidi_ready(substream)) |
922 | wake_up(&runtime->sleep); |
923 | } |
924 | spin_unlock_irqrestore(&runtime->lock, flags); |
925 | return result; |
926 | } |
927 | |
928 | static long snd_rawmidi_kernel_read1(struct snd_rawmidi_substream *substream, |
929 | unsigned char __user *userbuf, |
930 | unsigned char *kernelbuf, long count) |
931 | { |
932 | unsigned long flags; |
933 | long result = 0, count1; |
934 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
935 | |
936 | while (count > 0 && runtime->avail) { |
937 | count1 = runtime->buffer_size - runtime->appl_ptr; |
938 | if (count1 > count) |
939 | count1 = count; |
940 | spin_lock_irqsave(&runtime->lock, flags); |
941 | if (count1 > (int)runtime->avail) |
942 | count1 = runtime->avail; |
943 | if (kernelbuf) |
944 | memcpy(kernelbuf + result, runtime->buffer + runtime->appl_ptr, count1); |
945 | if (userbuf) { |
946 | spin_unlock_irqrestore(&runtime->lock, flags); |
947 | if (copy_to_user(userbuf + result, |
948 | runtime->buffer + runtime->appl_ptr, count1)) { |
949 | return result > 0 ? result : -EFAULT; |
950 | } |
951 | spin_lock_irqsave(&runtime->lock, flags); |
952 | } |
953 | runtime->appl_ptr += count1; |
954 | runtime->appl_ptr %= runtime->buffer_size; |
955 | runtime->avail -= count1; |
956 | spin_unlock_irqrestore(&runtime->lock, flags); |
957 | result += count1; |
958 | count -= count1; |
959 | } |
960 | return result; |
961 | } |
962 | |
963 | long snd_rawmidi_kernel_read(struct snd_rawmidi_substream *substream, |
964 | unsigned char *buf, long count) |
965 | { |
966 | snd_rawmidi_input_trigger(substream, 1); |
967 | return snd_rawmidi_kernel_read1(substream, NULL/*userbuf*/, buf, count); |
968 | } |
969 | |
970 | static ssize_t snd_rawmidi_read(struct file *file, char __user *buf, size_t count, |
971 | loff_t *offset) |
972 | { |
973 | long result; |
974 | int count1; |
975 | struct snd_rawmidi_file *rfile; |
976 | struct snd_rawmidi_substream *substream; |
977 | struct snd_rawmidi_runtime *runtime; |
978 | |
979 | rfile = file->private_data; |
980 | substream = rfile->input; |
981 | if (substream == NULL) |
982 | return -EIO; |
983 | runtime = substream->runtime; |
984 | snd_rawmidi_input_trigger(substream, 1); |
985 | result = 0; |
986 | while (count > 0) { |
987 | spin_lock_irq(&runtime->lock); |
988 | while (!snd_rawmidi_ready(substream)) { |
989 | wait_queue_t wait; |
990 | if ((file->f_flags & O_NONBLOCK) != 0 || result > 0) { |
991 | spin_unlock_irq(&runtime->lock); |
992 | return result > 0 ? result : -EAGAIN; |
993 | } |
994 | init_waitqueue_entry(&wait, current); |
995 | add_wait_queue(&runtime->sleep, &wait); |
996 | set_current_state(TASK_INTERRUPTIBLE); |
997 | spin_unlock_irq(&runtime->lock); |
998 | schedule(); |
999 | remove_wait_queue(&runtime->sleep, &wait); |
1000 | if (signal_pending(current)) |
1001 | return result > 0 ? result : -ERESTARTSYS; |
1002 | if (!runtime->avail) |
1003 | return result > 0 ? result : -EIO; |
1004 | spin_lock_irq(&runtime->lock); |
1005 | } |
1006 | spin_unlock_irq(&runtime->lock); |
1007 | count1 = snd_rawmidi_kernel_read1(substream, |
1008 | (unsigned char __user *)buf, |
1009 | NULL/*kernelbuf*/, |
1010 | count); |
1011 | if (count1 < 0) |
1012 | return result > 0 ? result : count1; |
1013 | result += count1; |
1014 | buf += count1; |
1015 | count -= count1; |
1016 | } |
1017 | return result; |
1018 | } |
1019 | |
1020 | /** |
1021 | * snd_rawmidi_transmit_empty - check whether the output buffer is empty |
1022 | * @substream: the rawmidi substream |
1023 | * |
1024 | * Returns 1 if the internal output buffer is empty, 0 if not. |
1025 | */ |
1026 | int snd_rawmidi_transmit_empty(struct snd_rawmidi_substream *substream) |
1027 | { |
1028 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
1029 | int result; |
1030 | unsigned long flags; |
1031 | |
1032 | if (runtime->buffer == NULL) { |
1033 | snd_printd("snd_rawmidi_transmit_empty: output is not active!!!\n"); |
1034 | return 1; |
1035 | } |
1036 | spin_lock_irqsave(&runtime->lock, flags); |
1037 | result = runtime->avail >= runtime->buffer_size; |
1038 | spin_unlock_irqrestore(&runtime->lock, flags); |
1039 | return result; |
1040 | } |
1041 | |
1042 | /** |
1043 | * snd_rawmidi_transmit_peek - copy data from the internal buffer |
1044 | * @substream: the rawmidi substream |
1045 | * @buffer: the buffer pointer |
1046 | * @count: data size to transfer |
1047 | * |
1048 | * Copies data from the internal output buffer to the given buffer. |
1049 | * |
1050 | * Call this in the interrupt handler when the midi output is ready, |
1051 | * and call snd_rawmidi_transmit_ack() after the transmission is |
1052 | * finished. |
1053 | * |
1054 | * Returns the size of copied data, or a negative error code on failure. |
1055 | */ |
1056 | int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream, |
1057 | unsigned char *buffer, int count) |
1058 | { |
1059 | unsigned long flags; |
1060 | int result, count1; |
1061 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
1062 | |
1063 | if (runtime->buffer == NULL) { |
1064 | snd_printd("snd_rawmidi_transmit_peek: output is not active!!!\n"); |
1065 | return -EINVAL; |
1066 | } |
1067 | result = 0; |
1068 | spin_lock_irqsave(&runtime->lock, flags); |
1069 | if (runtime->avail >= runtime->buffer_size) { |
1070 | /* warning: lowlevel layer MUST trigger down the hardware */ |
1071 | goto __skip; |
1072 | } |
1073 | if (count == 1) { /* special case, faster code */ |
1074 | *buffer = runtime->buffer[runtime->hw_ptr]; |
1075 | result++; |
1076 | } else { |
1077 | count1 = runtime->buffer_size - runtime->hw_ptr; |
1078 | if (count1 > count) |
1079 | count1 = count; |
1080 | if (count1 > (int)(runtime->buffer_size - runtime->avail)) |
1081 | count1 = runtime->buffer_size - runtime->avail; |
1082 | memcpy(buffer, runtime->buffer + runtime->hw_ptr, count1); |
1083 | count -= count1; |
1084 | result += count1; |
1085 | if (count > 0) { |
1086 | if (count > (int)(runtime->buffer_size - runtime->avail - count1)) |
1087 | count = runtime->buffer_size - runtime->avail - count1; |
1088 | memcpy(buffer + count1, runtime->buffer, count); |
1089 | result += count; |
1090 | } |
1091 | } |
1092 | __skip: |
1093 | spin_unlock_irqrestore(&runtime->lock, flags); |
1094 | return result; |
1095 | } |
1096 | |
1097 | /** |
1098 | * snd_rawmidi_transmit_ack - acknowledge the transmission |
1099 | * @substream: the rawmidi substream |
1100 | * @count: the tranferred count |
1101 | * |
1102 | * Advances the hardware pointer for the internal output buffer with |
1103 | * the given size and updates the condition. |
1104 | * Call after the transmission is finished. |
1105 | * |
1106 | * Returns the advanced size if successful, or a negative error code on failure. |
1107 | */ |
1108 | int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count) |
1109 | { |
1110 | unsigned long flags; |
1111 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
1112 | |
1113 | if (runtime->buffer == NULL) { |
1114 | snd_printd("snd_rawmidi_transmit_ack: output is not active!!!\n"); |
1115 | return -EINVAL; |
1116 | } |
1117 | spin_lock_irqsave(&runtime->lock, flags); |
1118 | snd_BUG_ON(runtime->avail + count > runtime->buffer_size); |
1119 | runtime->hw_ptr += count; |
1120 | runtime->hw_ptr %= runtime->buffer_size; |
1121 | runtime->avail += count; |
1122 | substream->bytes += count; |
1123 | if (count > 0) { |
1124 | if (runtime->drain || snd_rawmidi_ready(substream)) |
1125 | wake_up(&runtime->sleep); |
1126 | } |
1127 | spin_unlock_irqrestore(&runtime->lock, flags); |
1128 | return count; |
1129 | } |
1130 | |
1131 | /** |
1132 | * snd_rawmidi_transmit - copy from the buffer to the device |
1133 | * @substream: the rawmidi substream |
1134 | * @buffer: the buffer pointer |
1135 | * @count: the data size to transfer |
1136 | * |
1137 | * Copies data from the buffer to the device and advances the pointer. |
1138 | * |
1139 | * Returns the copied size if successful, or a negative error code on failure. |
1140 | */ |
1141 | int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream, |
1142 | unsigned char *buffer, int count) |
1143 | { |
1144 | if (!substream->opened) |
1145 | return -EBADFD; |
1146 | count = snd_rawmidi_transmit_peek(substream, buffer, count); |
1147 | if (count < 0) |
1148 | return count; |
1149 | return snd_rawmidi_transmit_ack(substream, count); |
1150 | } |
1151 | |
1152 | static long snd_rawmidi_kernel_write1(struct snd_rawmidi_substream *substream, |
1153 | const unsigned char __user *userbuf, |
1154 | const unsigned char *kernelbuf, |
1155 | long count) |
1156 | { |
1157 | unsigned long flags; |
1158 | long count1, result; |
1159 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
1160 | |
1161 | if (snd_BUG_ON(!kernelbuf && !userbuf)) |
1162 | return -EINVAL; |
1163 | if (snd_BUG_ON(!runtime->buffer)) |
1164 | return -EINVAL; |
1165 | |
1166 | result = 0; |
1167 | spin_lock_irqsave(&runtime->lock, flags); |
1168 | if (substream->append) { |
1169 | if ((long)runtime->avail < count) { |
1170 | spin_unlock_irqrestore(&runtime->lock, flags); |
1171 | return -EAGAIN; |
1172 | } |
1173 | } |
1174 | while (count > 0 && runtime->avail > 0) { |
1175 | count1 = runtime->buffer_size - runtime->appl_ptr; |
1176 | if (count1 > count) |
1177 | count1 = count; |
1178 | if (count1 > (long)runtime->avail) |
1179 | count1 = runtime->avail; |
1180 | if (kernelbuf) |
1181 | memcpy(runtime->buffer + runtime->appl_ptr, |
1182 | kernelbuf + result, count1); |
1183 | else if (userbuf) { |
1184 | spin_unlock_irqrestore(&runtime->lock, flags); |
1185 | if (copy_from_user(runtime->buffer + runtime->appl_ptr, |
1186 | userbuf + result, count1)) { |
1187 | spin_lock_irqsave(&runtime->lock, flags); |
1188 | result = result > 0 ? result : -EFAULT; |
1189 | goto __end; |
1190 | } |
1191 | spin_lock_irqsave(&runtime->lock, flags); |
1192 | } |
1193 | runtime->appl_ptr += count1; |
1194 | runtime->appl_ptr %= runtime->buffer_size; |
1195 | runtime->avail -= count1; |
1196 | result += count1; |
1197 | count -= count1; |
1198 | } |
1199 | __end: |
1200 | count1 = runtime->avail < runtime->buffer_size; |
1201 | spin_unlock_irqrestore(&runtime->lock, flags); |
1202 | if (count1) |
1203 | snd_rawmidi_output_trigger(substream, 1); |
1204 | return result; |
1205 | } |
1206 | |
1207 | long snd_rawmidi_kernel_write(struct snd_rawmidi_substream *substream, |
1208 | const unsigned char *buf, long count) |
1209 | { |
1210 | return snd_rawmidi_kernel_write1(substream, NULL, buf, count); |
1211 | } |
1212 | |
1213 | static ssize_t snd_rawmidi_write(struct file *file, const char __user *buf, |
1214 | size_t count, loff_t *offset) |
1215 | { |
1216 | long result, timeout; |
1217 | int count1; |
1218 | struct snd_rawmidi_file *rfile; |
1219 | struct snd_rawmidi_runtime *runtime; |
1220 | struct snd_rawmidi_substream *substream; |
1221 | |
1222 | rfile = file->private_data; |
1223 | substream = rfile->output; |
1224 | runtime = substream->runtime; |
1225 | /* we cannot put an atomic message to our buffer */ |
1226 | if (substream->append && count > runtime->buffer_size) |
1227 | return -EIO; |
1228 | result = 0; |
1229 | while (count > 0) { |
1230 | spin_lock_irq(&runtime->lock); |
1231 | while (!snd_rawmidi_ready_append(substream, count)) { |
1232 | wait_queue_t wait; |
1233 | if (file->f_flags & O_NONBLOCK) { |
1234 | spin_unlock_irq(&runtime->lock); |
1235 | return result > 0 ? result : -EAGAIN; |
1236 | } |
1237 | init_waitqueue_entry(&wait, current); |
1238 | add_wait_queue(&runtime->sleep, &wait); |
1239 | set_current_state(TASK_INTERRUPTIBLE); |
1240 | spin_unlock_irq(&runtime->lock); |
1241 | timeout = schedule_timeout(30 * HZ); |
1242 | remove_wait_queue(&runtime->sleep, &wait); |
1243 | if (signal_pending(current)) |
1244 | return result > 0 ? result : -ERESTARTSYS; |
1245 | if (!runtime->avail && !timeout) |
1246 | return result > 0 ? result : -EIO; |
1247 | spin_lock_irq(&runtime->lock); |
1248 | } |
1249 | spin_unlock_irq(&runtime->lock); |
1250 | count1 = snd_rawmidi_kernel_write1(substream, buf, NULL, count); |
1251 | if (count1 < 0) |
1252 | return result > 0 ? result : count1; |
1253 | result += count1; |
1254 | buf += count1; |
1255 | if ((size_t)count1 < count && (file->f_flags & O_NONBLOCK)) |
1256 | break; |
1257 | count -= count1; |
1258 | } |
1259 | if (file->f_flags & O_SYNC) { |
1260 | spin_lock_irq(&runtime->lock); |
1261 | while (runtime->avail != runtime->buffer_size) { |
1262 | wait_queue_t wait; |
1263 | unsigned int last_avail = runtime->avail; |
1264 | init_waitqueue_entry(&wait, current); |
1265 | add_wait_queue(&runtime->sleep, &wait); |
1266 | set_current_state(TASK_INTERRUPTIBLE); |
1267 | spin_unlock_irq(&runtime->lock); |
1268 | timeout = schedule_timeout(30 * HZ); |
1269 | remove_wait_queue(&runtime->sleep, &wait); |
1270 | if (signal_pending(current)) |
1271 | return result > 0 ? result : -ERESTARTSYS; |
1272 | if (runtime->avail == last_avail && !timeout) |
1273 | return result > 0 ? result : -EIO; |
1274 | spin_lock_irq(&runtime->lock); |
1275 | } |
1276 | spin_unlock_irq(&runtime->lock); |
1277 | } |
1278 | return result; |
1279 | } |
1280 | |
1281 | static unsigned int snd_rawmidi_poll(struct file *file, poll_table * wait) |
1282 | { |
1283 | struct snd_rawmidi_file *rfile; |
1284 | struct snd_rawmidi_runtime *runtime; |
1285 | unsigned int mask; |
1286 | |
1287 | rfile = file->private_data; |
1288 | if (rfile->input != NULL) { |
1289 | runtime = rfile->input->runtime; |
1290 | snd_rawmidi_input_trigger(rfile->input, 1); |
1291 | poll_wait(file, &runtime->sleep, wait); |
1292 | } |
1293 | if (rfile->output != NULL) { |
1294 | runtime = rfile->output->runtime; |
1295 | poll_wait(file, &runtime->sleep, wait); |
1296 | } |
1297 | mask = 0; |
1298 | if (rfile->input != NULL) { |
1299 | if (snd_rawmidi_ready(rfile->input)) |
1300 | mask |= POLLIN | POLLRDNORM; |
1301 | } |
1302 | if (rfile->output != NULL) { |
1303 | if (snd_rawmidi_ready(rfile->output)) |
1304 | mask |= POLLOUT | POLLWRNORM; |
1305 | } |
1306 | return mask; |
1307 | } |
1308 | |
1309 | /* |
1310 | */ |
1311 | #ifdef CONFIG_COMPAT |
1312 | #include "rawmidi_compat.c" |
1313 | #else |
1314 | #define snd_rawmidi_ioctl_compat NULL |
1315 | #endif |
1316 | |
1317 | /* |
1318 | |
1319 | */ |
1320 | |
1321 | static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry, |
1322 | struct snd_info_buffer *buffer) |
1323 | { |
1324 | struct snd_rawmidi *rmidi; |
1325 | struct snd_rawmidi_substream *substream; |
1326 | struct snd_rawmidi_runtime *runtime; |
1327 | |
1328 | rmidi = entry->private_data; |
1329 | snd_iprintf(buffer, "%s\n\n", rmidi->name); |
1330 | mutex_lock(&rmidi->open_mutex); |
1331 | if (rmidi->info_flags & SNDRV_RAWMIDI_INFO_OUTPUT) { |
1332 | list_for_each_entry(substream, |
1333 | &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams, |
1334 | list) { |
1335 | snd_iprintf(buffer, |
1336 | "Output %d\n" |
1337 | " Tx bytes : %lu\n", |
1338 | substream->number, |
1339 | (unsigned long) substream->bytes); |
1340 | if (substream->opened) { |
1341 | runtime = substream->runtime; |
1342 | snd_iprintf(buffer, |
1343 | " Mode : %s\n" |
1344 | " Buffer size : %lu\n" |
1345 | " Avail : %lu\n", |
1346 | runtime->oss ? "OSS compatible" : "native", |
1347 | (unsigned long) runtime->buffer_size, |
1348 | (unsigned long) runtime->avail); |
1349 | } |
1350 | } |
1351 | } |
1352 | if (rmidi->info_flags & SNDRV_RAWMIDI_INFO_INPUT) { |
1353 | list_for_each_entry(substream, |
1354 | &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams, |
1355 | list) { |
1356 | snd_iprintf(buffer, |
1357 | "Input %d\n" |
1358 | " Rx bytes : %lu\n", |
1359 | substream->number, |
1360 | (unsigned long) substream->bytes); |
1361 | if (substream->opened) { |
1362 | runtime = substream->runtime; |
1363 | snd_iprintf(buffer, |
1364 | " Buffer size : %lu\n" |
1365 | " Avail : %lu\n" |
1366 | " Overruns : %lu\n", |
1367 | (unsigned long) runtime->buffer_size, |
1368 | (unsigned long) runtime->avail, |
1369 | (unsigned long) runtime->xruns); |
1370 | } |
1371 | } |
1372 | } |
1373 | mutex_unlock(&rmidi->open_mutex); |
1374 | } |
1375 | |
1376 | /* |
1377 | * Register functions |
1378 | */ |
1379 | |
1380 | static const struct file_operations snd_rawmidi_f_ops = |
1381 | { |
1382 | .owner = THIS_MODULE, |
1383 | .read = snd_rawmidi_read, |
1384 | .write = snd_rawmidi_write, |
1385 | .open = snd_rawmidi_open, |
1386 | .release = snd_rawmidi_release, |
1387 | .poll = snd_rawmidi_poll, |
1388 | .unlocked_ioctl = snd_rawmidi_ioctl, |
1389 | .compat_ioctl = snd_rawmidi_ioctl_compat, |
1390 | }; |
1391 | |
1392 | static int snd_rawmidi_alloc_substreams(struct snd_rawmidi *rmidi, |
1393 | struct snd_rawmidi_str *stream, |
1394 | int direction, |
1395 | int count) |
1396 | { |
1397 | struct snd_rawmidi_substream *substream; |
1398 | int idx; |
1399 | |
1400 | for (idx = 0; idx < count; idx++) { |
1401 | substream = kzalloc(sizeof(*substream), GFP_KERNEL); |
1402 | if (substream == NULL) { |
1403 | snd_printk(KERN_ERR "rawmidi: cannot allocate substream\n"); |
1404 | return -ENOMEM; |
1405 | } |
1406 | substream->stream = direction; |
1407 | substream->number = idx; |
1408 | substream->rmidi = rmidi; |
1409 | substream->pstr = stream; |
1410 | list_add_tail(&substream->list, &stream->substreams); |
1411 | stream->substream_count++; |
1412 | } |
1413 | return 0; |
1414 | } |
1415 | |
1416 | /** |
1417 | * snd_rawmidi_new - create a rawmidi instance |
1418 | * @card: the card instance |
1419 | * @id: the id string |
1420 | * @device: the device index |
1421 | * @output_count: the number of output streams |
1422 | * @input_count: the number of input streams |
1423 | * @rrawmidi: the pointer to store the new rawmidi instance |
1424 | * |
1425 | * Creates a new rawmidi instance. |
1426 | * Use snd_rawmidi_set_ops() to set the operators to the new instance. |
1427 | * |
1428 | * Returns zero if successful, or a negative error code on failure. |
1429 | */ |
1430 | int snd_rawmidi_new(struct snd_card *card, char *id, int device, |
1431 | int output_count, int input_count, |
1432 | struct snd_rawmidi ** rrawmidi) |
1433 | { |
1434 | struct snd_rawmidi *rmidi; |
1435 | int err; |
1436 | static struct snd_device_ops ops = { |
1437 | .dev_free = snd_rawmidi_dev_free, |
1438 | .dev_register = snd_rawmidi_dev_register, |
1439 | .dev_disconnect = snd_rawmidi_dev_disconnect, |
1440 | }; |
1441 | |
1442 | if (snd_BUG_ON(!card)) |
1443 | return -ENXIO; |
1444 | if (rrawmidi) |
1445 | *rrawmidi = NULL; |
1446 | rmidi = kzalloc(sizeof(*rmidi), GFP_KERNEL); |
1447 | if (rmidi == NULL) { |
1448 | snd_printk(KERN_ERR "rawmidi: cannot allocate\n"); |
1449 | return -ENOMEM; |
1450 | } |
1451 | rmidi->card = card; |
1452 | rmidi->device = device; |
1453 | mutex_init(&rmidi->open_mutex); |
1454 | init_waitqueue_head(&rmidi->open_wait); |
1455 | INIT_LIST_HEAD(&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams); |
1456 | INIT_LIST_HEAD(&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams); |
1457 | |
1458 | if (id != NULL) |
1459 | strlcpy(rmidi->id, id, sizeof(rmidi->id)); |
1460 | if ((err = snd_rawmidi_alloc_substreams(rmidi, |
1461 | &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT], |
1462 | SNDRV_RAWMIDI_STREAM_INPUT, |
1463 | input_count)) < 0) { |
1464 | snd_rawmidi_free(rmidi); |
1465 | return err; |
1466 | } |
1467 | if ((err = snd_rawmidi_alloc_substreams(rmidi, |
1468 | &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT], |
1469 | SNDRV_RAWMIDI_STREAM_OUTPUT, |
1470 | output_count)) < 0) { |
1471 | snd_rawmidi_free(rmidi); |
1472 | return err; |
1473 | } |
1474 | if ((err = snd_device_new(card, SNDRV_DEV_RAWMIDI, rmidi, &ops)) < 0) { |
1475 | snd_rawmidi_free(rmidi); |
1476 | return err; |
1477 | } |
1478 | if (rrawmidi) |
1479 | *rrawmidi = rmidi; |
1480 | return 0; |
1481 | } |
1482 | |
1483 | static void snd_rawmidi_free_substreams(struct snd_rawmidi_str *stream) |
1484 | { |
1485 | struct snd_rawmidi_substream *substream; |
1486 | |
1487 | while (!list_empty(&stream->substreams)) { |
1488 | substream = list_entry(stream->substreams.next, struct snd_rawmidi_substream, list); |
1489 | list_del(&substream->list); |
1490 | kfree(substream); |
1491 | } |
1492 | } |
1493 | |
1494 | static int snd_rawmidi_free(struct snd_rawmidi *rmidi) |
1495 | { |
1496 | if (!rmidi) |
1497 | return 0; |
1498 | |
1499 | snd_info_free_entry(rmidi->proc_entry); |
1500 | rmidi->proc_entry = NULL; |
1501 | mutex_lock(®ister_mutex); |
1502 | if (rmidi->ops && rmidi->ops->dev_unregister) |
1503 | rmidi->ops->dev_unregister(rmidi); |
1504 | mutex_unlock(®ister_mutex); |
1505 | |
1506 | snd_rawmidi_free_substreams(&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]); |
1507 | snd_rawmidi_free_substreams(&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]); |
1508 | if (rmidi->private_free) |
1509 | rmidi->private_free(rmidi); |
1510 | kfree(rmidi); |
1511 | return 0; |
1512 | } |
1513 | |
1514 | static int snd_rawmidi_dev_free(struct snd_device *device) |
1515 | { |
1516 | struct snd_rawmidi *rmidi = device->device_data; |
1517 | return snd_rawmidi_free(rmidi); |
1518 | } |
1519 | |
1520 | #if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE)) |
1521 | static void snd_rawmidi_dev_seq_free(struct snd_seq_device *device) |
1522 | { |
1523 | struct snd_rawmidi *rmidi = device->private_data; |
1524 | rmidi->seq_dev = NULL; |
1525 | } |
1526 | #endif |
1527 | |
1528 | static int snd_rawmidi_dev_register(struct snd_device *device) |
1529 | { |
1530 | int err; |
1531 | struct snd_info_entry *entry; |
1532 | char name[16]; |
1533 | struct snd_rawmidi *rmidi = device->device_data; |
1534 | |
1535 | if (rmidi->device >= SNDRV_RAWMIDI_DEVICES) |
1536 | return -ENOMEM; |
1537 | mutex_lock(®ister_mutex); |
1538 | if (snd_rawmidi_search(rmidi->card, rmidi->device)) { |
1539 | mutex_unlock(®ister_mutex); |
1540 | return -EBUSY; |
1541 | } |
1542 | list_add_tail(&rmidi->list, &snd_rawmidi_devices); |
1543 | sprintf(name, "midiC%iD%i", rmidi->card->number, rmidi->device); |
1544 | if ((err = snd_register_device(SNDRV_DEVICE_TYPE_RAWMIDI, |
1545 | rmidi->card, rmidi->device, |
1546 | &snd_rawmidi_f_ops, rmidi, name)) < 0) { |
1547 | snd_printk(KERN_ERR "unable to register rawmidi device %i:%i\n", rmidi->card->number, rmidi->device); |
1548 | list_del(&rmidi->list); |
1549 | mutex_unlock(®ister_mutex); |
1550 | return err; |
1551 | } |
1552 | if (rmidi->ops && rmidi->ops->dev_register && |
1553 | (err = rmidi->ops->dev_register(rmidi)) < 0) { |
1554 | snd_unregister_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device); |
1555 | list_del(&rmidi->list); |
1556 | mutex_unlock(®ister_mutex); |
1557 | return err; |
1558 | } |
1559 | #ifdef CONFIG_SND_OSSEMUL |
1560 | rmidi->ossreg = 0; |
1561 | if ((int)rmidi->device == midi_map[rmidi->card->number]) { |
1562 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, |
1563 | rmidi->card, 0, &snd_rawmidi_f_ops, |
1564 | rmidi, name) < 0) { |
1565 | snd_printk(KERN_ERR "unable to register OSS rawmidi device %i:%i\n", rmidi->card->number, 0); |
1566 | } else { |
1567 | rmidi->ossreg++; |
1568 | #ifdef SNDRV_OSS_INFO_DEV_MIDI |
1569 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIDI, rmidi->card->number, rmidi->name); |
1570 | #endif |
1571 | } |
1572 | } |
1573 | if ((int)rmidi->device == amidi_map[rmidi->card->number]) { |
1574 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, |
1575 | rmidi->card, 1, &snd_rawmidi_f_ops, |
1576 | rmidi, name) < 0) { |
1577 | snd_printk(KERN_ERR "unable to register OSS rawmidi device %i:%i\n", rmidi->card->number, 1); |
1578 | } else { |
1579 | rmidi->ossreg++; |
1580 | } |
1581 | } |
1582 | #endif /* CONFIG_SND_OSSEMUL */ |
1583 | mutex_unlock(®ister_mutex); |
1584 | sprintf(name, "midi%d", rmidi->device); |
1585 | entry = snd_info_create_card_entry(rmidi->card, name, rmidi->card->proc_root); |
1586 | if (entry) { |
1587 | entry->private_data = rmidi; |
1588 | entry->c.text.read = snd_rawmidi_proc_info_read; |
1589 | if (snd_info_register(entry) < 0) { |
1590 | snd_info_free_entry(entry); |
1591 | entry = NULL; |
1592 | } |
1593 | } |
1594 | rmidi->proc_entry = entry; |
1595 | #if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE)) |
1596 | if (!rmidi->ops || !rmidi->ops->dev_register) { /* own registration mechanism */ |
1597 | if (snd_seq_device_new(rmidi->card, rmidi->device, SNDRV_SEQ_DEV_ID_MIDISYNTH, 0, &rmidi->seq_dev) >= 0) { |
1598 | rmidi->seq_dev->private_data = rmidi; |
1599 | rmidi->seq_dev->private_free = snd_rawmidi_dev_seq_free; |
1600 | sprintf(rmidi->seq_dev->name, "MIDI %d-%d", rmidi->card->number, rmidi->device); |
1601 | snd_device_register(rmidi->card, rmidi->seq_dev); |
1602 | } |
1603 | } |
1604 | #endif |
1605 | return 0; |
1606 | } |
1607 | |
1608 | static int snd_rawmidi_dev_disconnect(struct snd_device *device) |
1609 | { |
1610 | struct snd_rawmidi *rmidi = device->device_data; |
1611 | |
1612 | mutex_lock(®ister_mutex); |
1613 | list_del_init(&rmidi->list); |
1614 | #ifdef CONFIG_SND_OSSEMUL |
1615 | if (rmidi->ossreg) { |
1616 | if ((int)rmidi->device == midi_map[rmidi->card->number]) { |
1617 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, rmidi->card, 0); |
1618 | #ifdef SNDRV_OSS_INFO_DEV_MIDI |
1619 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIDI, rmidi->card->number); |
1620 | #endif |
1621 | } |
1622 | if ((int)rmidi->device == amidi_map[rmidi->card->number]) |
1623 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, rmidi->card, 1); |
1624 | rmidi->ossreg = 0; |
1625 | } |
1626 | #endif /* CONFIG_SND_OSSEMUL */ |
1627 | snd_unregister_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device); |
1628 | mutex_unlock(®ister_mutex); |
1629 | return 0; |
1630 | } |
1631 | |
1632 | /** |
1633 | * snd_rawmidi_set_ops - set the rawmidi operators |
1634 | * @rmidi: the rawmidi instance |
1635 | * @stream: the stream direction, SNDRV_RAWMIDI_STREAM_XXX |
1636 | * @ops: the operator table |
1637 | * |
1638 | * Sets the rawmidi operators for the given stream direction. |
1639 | */ |
1640 | void snd_rawmidi_set_ops(struct snd_rawmidi *rmidi, int stream, |
1641 | struct snd_rawmidi_ops *ops) |
1642 | { |
1643 | struct snd_rawmidi_substream *substream; |
1644 | |
1645 | list_for_each_entry(substream, &rmidi->streams[stream].substreams, list) |
1646 | substream->ops = ops; |
1647 | } |
1648 | |
1649 | /* |
1650 | * ENTRY functions |
1651 | */ |
1652 | |
1653 | static int __init alsa_rawmidi_init(void) |
1654 | { |
1655 | |
1656 | snd_ctl_register_ioctl(snd_rawmidi_control_ioctl); |
1657 | snd_ctl_register_ioctl_compat(snd_rawmidi_control_ioctl); |
1658 | #ifdef CONFIG_SND_OSSEMUL |
1659 | { int i; |
1660 | /* check device map table */ |
1661 | for (i = 0; i < SNDRV_CARDS; i++) { |
1662 | if (midi_map[i] < 0 || midi_map[i] >= SNDRV_RAWMIDI_DEVICES) { |
1663 | snd_printk(KERN_ERR "invalid midi_map[%d] = %d\n", i, midi_map[i]); |
1664 | midi_map[i] = 0; |
1665 | } |
1666 | if (amidi_map[i] < 0 || amidi_map[i] >= SNDRV_RAWMIDI_DEVICES) { |
1667 | snd_printk(KERN_ERR "invalid amidi_map[%d] = %d\n", i, amidi_map[i]); |
1668 | amidi_map[i] = 1; |
1669 | } |
1670 | } |
1671 | } |
1672 | #endif /* CONFIG_SND_OSSEMUL */ |
1673 | return 0; |
1674 | } |
1675 | |
1676 | static void __exit alsa_rawmidi_exit(void) |
1677 | { |
1678 | snd_ctl_unregister_ioctl(snd_rawmidi_control_ioctl); |
1679 | snd_ctl_unregister_ioctl_compat(snd_rawmidi_control_ioctl); |
1680 | } |
1681 | |
1682 | module_init(alsa_rawmidi_init) |
1683 | module_exit(alsa_rawmidi_exit) |
1684 | |
1685 | EXPORT_SYMBOL(snd_rawmidi_output_params); |
1686 | EXPORT_SYMBOL(snd_rawmidi_input_params); |
1687 | EXPORT_SYMBOL(snd_rawmidi_drop_output); |
1688 | EXPORT_SYMBOL(snd_rawmidi_drain_output); |
1689 | EXPORT_SYMBOL(snd_rawmidi_drain_input); |
1690 | EXPORT_SYMBOL(snd_rawmidi_receive); |
1691 | EXPORT_SYMBOL(snd_rawmidi_transmit_empty); |
1692 | EXPORT_SYMBOL(snd_rawmidi_transmit_peek); |
1693 | EXPORT_SYMBOL(snd_rawmidi_transmit_ack); |
1694 | EXPORT_SYMBOL(snd_rawmidi_transmit); |
1695 | EXPORT_SYMBOL(snd_rawmidi_new); |
1696 | EXPORT_SYMBOL(snd_rawmidi_set_ops); |
1697 | EXPORT_SYMBOL(snd_rawmidi_info_select); |
1698 | EXPORT_SYMBOL(snd_rawmidi_kernel_open); |
1699 | EXPORT_SYMBOL(snd_rawmidi_kernel_release); |
1700 | EXPORT_SYMBOL(snd_rawmidi_kernel_read); |
1701 | EXPORT_SYMBOL(snd_rawmidi_kernel_write); |
1702 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9