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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_work(struct work_struct *work) |
96 | { |
97 | struct snd_rawmidi_runtime *runtime = |
98 | container_of(work, struct snd_rawmidi_runtime, event_work); |
99 | if (runtime->event) |
100 | runtime->event(runtime->substream); |
101 | } |
102 | |
103 | static int snd_rawmidi_runtime_create(struct snd_rawmidi_substream *substream) |
104 | { |
105 | struct snd_rawmidi_runtime *runtime; |
106 | |
107 | if ((runtime = kzalloc(sizeof(*runtime), GFP_KERNEL)) == NULL) |
108 | return -ENOMEM; |
109 | runtime->substream = substream; |
110 | spin_lock_init(&runtime->lock); |
111 | init_waitqueue_head(&runtime->sleep); |
112 | INIT_WORK(&runtime->event_work, snd_rawmidi_input_event_work); |
113 | runtime->event = NULL; |
114 | runtime->buffer_size = PAGE_SIZE; |
115 | runtime->avail_min = 1; |
116 | if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT) |
117 | runtime->avail = 0; |
118 | else |
119 | runtime->avail = runtime->buffer_size; |
120 | if ((runtime->buffer = kmalloc(runtime->buffer_size, GFP_KERNEL)) == NULL) { |
121 | kfree(runtime); |
122 | return -ENOMEM; |
123 | } |
124 | runtime->appl_ptr = runtime->hw_ptr = 0; |
125 | substream->runtime = runtime; |
126 | return 0; |
127 | } |
128 | |
129 | static int snd_rawmidi_runtime_free(struct snd_rawmidi_substream *substream) |
130 | { |
131 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
132 | |
133 | kfree(runtime->buffer); |
134 | kfree(runtime); |
135 | substream->runtime = NULL; |
136 | return 0; |
137 | } |
138 | |
139 | static inline void snd_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,int up) |
140 | { |
141 | if (!substream->opened) |
142 | return; |
143 | substream->ops->trigger(substream, up); |
144 | } |
145 | |
146 | static void snd_rawmidi_input_trigger(struct snd_rawmidi_substream *substream, int up) |
147 | { |
148 | if (!substream->opened) |
149 | return; |
150 | substream->ops->trigger(substream, up); |
151 | if (!up) |
152 | cancel_work_sync(&substream->runtime->event_work); |
153 | } |
154 | |
155 | int snd_rawmidi_drop_output(struct snd_rawmidi_substream *substream) |
156 | { |
157 | unsigned long flags; |
158 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
159 | |
160 | snd_rawmidi_output_trigger(substream, 0); |
161 | runtime->drain = 0; |
162 | spin_lock_irqsave(&runtime->lock, flags); |
163 | runtime->appl_ptr = runtime->hw_ptr = 0; |
164 | runtime->avail = runtime->buffer_size; |
165 | spin_unlock_irqrestore(&runtime->lock, flags); |
166 | return 0; |
167 | } |
168 | |
169 | int snd_rawmidi_drain_output(struct snd_rawmidi_substream *substream) |
170 | { |
171 | int err; |
172 | long timeout; |
173 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
174 | |
175 | err = 0; |
176 | runtime->drain = 1; |
177 | timeout = wait_event_interruptible_timeout(runtime->sleep, |
178 | (runtime->avail >= runtime->buffer_size), |
179 | 10*HZ); |
180 | if (signal_pending(current)) |
181 | err = -ERESTARTSYS; |
182 | if (runtime->avail < runtime->buffer_size && !timeout) { |
183 | snd_printk(KERN_WARNING "rawmidi drain error (avail = %li, buffer_size = %li)\n", (long)runtime->avail, (long)runtime->buffer_size); |
184 | err = -EIO; |
185 | } |
186 | runtime->drain = 0; |
187 | if (err != -ERESTARTSYS) { |
188 | /* we need wait a while to make sure that Tx FIFOs are empty */ |
189 | if (substream->ops->drain) |
190 | substream->ops->drain(substream); |
191 | else |
192 | msleep(50); |
193 | snd_rawmidi_drop_output(substream); |
194 | } |
195 | return err; |
196 | } |
197 | |
198 | int snd_rawmidi_drain_input(struct snd_rawmidi_substream *substream) |
199 | { |
200 | unsigned long flags; |
201 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
202 | |
203 | snd_rawmidi_input_trigger(substream, 0); |
204 | runtime->drain = 0; |
205 | spin_lock_irqsave(&runtime->lock, flags); |
206 | runtime->appl_ptr = runtime->hw_ptr = 0; |
207 | runtime->avail = 0; |
208 | spin_unlock_irqrestore(&runtime->lock, flags); |
209 | return 0; |
210 | } |
211 | |
212 | /* look for an available substream for the given stream direction; |
213 | * if a specific subdevice is given, try to assign it |
214 | */ |
215 | static int assign_substream(struct snd_rawmidi *rmidi, int subdevice, |
216 | int stream, int mode, |
217 | struct snd_rawmidi_substream **sub_ret) |
218 | { |
219 | struct snd_rawmidi_substream *substream; |
220 | struct snd_rawmidi_str *s = &rmidi->streams[stream]; |
221 | static unsigned int info_flags[2] = { |
222 | [SNDRV_RAWMIDI_STREAM_OUTPUT] = SNDRV_RAWMIDI_INFO_OUTPUT, |
223 | [SNDRV_RAWMIDI_STREAM_INPUT] = SNDRV_RAWMIDI_INFO_INPUT, |
224 | }; |
225 | |
226 | if (!(rmidi->info_flags & info_flags[stream])) |
227 | return -ENXIO; |
228 | if (subdevice >= 0 && subdevice >= s->substream_count) |
229 | return -ENODEV; |
230 | |
231 | list_for_each_entry(substream, &s->substreams, list) { |
232 | if (substream->opened) { |
233 | if (stream == SNDRV_RAWMIDI_STREAM_INPUT || |
234 | !(mode & SNDRV_RAWMIDI_LFLG_APPEND) || |
235 | !substream->append) |
236 | continue; |
237 | } |
238 | if (subdevice < 0 || subdevice == substream->number) { |
239 | *sub_ret = substream; |
240 | return 0; |
241 | } |
242 | } |
243 | return -EAGAIN; |
244 | } |
245 | |
246 | /* open and do ref-counting for the given substream */ |
247 | static int open_substream(struct snd_rawmidi *rmidi, |
248 | struct snd_rawmidi_substream *substream, |
249 | int mode) |
250 | { |
251 | int err; |
252 | |
253 | if (substream->use_count == 0) { |
254 | err = snd_rawmidi_runtime_create(substream); |
255 | if (err < 0) |
256 | return err; |
257 | err = substream->ops->open(substream); |
258 | if (err < 0) { |
259 | snd_rawmidi_runtime_free(substream); |
260 | return err; |
261 | } |
262 | substream->opened = 1; |
263 | substream->active_sensing = 0; |
264 | if (mode & SNDRV_RAWMIDI_LFLG_APPEND) |
265 | substream->append = 1; |
266 | substream->pid = get_pid(task_pid(current)); |
267 | rmidi->streams[substream->stream].substream_opened++; |
268 | } |
269 | substream->use_count++; |
270 | return 0; |
271 | } |
272 | |
273 | static void close_substream(struct snd_rawmidi *rmidi, |
274 | struct snd_rawmidi_substream *substream, |
275 | int cleanup); |
276 | |
277 | static int rawmidi_open_priv(struct snd_rawmidi *rmidi, int subdevice, int mode, |
278 | struct snd_rawmidi_file *rfile) |
279 | { |
280 | struct snd_rawmidi_substream *sinput = NULL, *soutput = NULL; |
281 | int err; |
282 | |
283 | rfile->input = rfile->output = NULL; |
284 | if (mode & SNDRV_RAWMIDI_LFLG_INPUT) { |
285 | err = assign_substream(rmidi, subdevice, |
286 | SNDRV_RAWMIDI_STREAM_INPUT, |
287 | mode, &sinput); |
288 | if (err < 0) |
289 | return err; |
290 | } |
291 | if (mode & SNDRV_RAWMIDI_LFLG_OUTPUT) { |
292 | err = assign_substream(rmidi, subdevice, |
293 | SNDRV_RAWMIDI_STREAM_OUTPUT, |
294 | mode, &soutput); |
295 | if (err < 0) |
296 | return err; |
297 | } |
298 | |
299 | if (sinput) { |
300 | err = open_substream(rmidi, sinput, mode); |
301 | if (err < 0) |
302 | return err; |
303 | } |
304 | if (soutput) { |
305 | err = open_substream(rmidi, soutput, mode); |
306 | if (err < 0) { |
307 | if (sinput) |
308 | close_substream(rmidi, sinput, 0); |
309 | return err; |
310 | } |
311 | } |
312 | |
313 | rfile->rmidi = rmidi; |
314 | rfile->input = sinput; |
315 | rfile->output = soutput; |
316 | return 0; |
317 | } |
318 | |
319 | /* called from sound/core/seq/seq_midi.c */ |
320 | int snd_rawmidi_kernel_open(struct snd_card *card, int device, int subdevice, |
321 | int mode, struct snd_rawmidi_file * rfile) |
322 | { |
323 | struct snd_rawmidi *rmidi; |
324 | int err; |
325 | |
326 | if (snd_BUG_ON(!rfile)) |
327 | return -EINVAL; |
328 | |
329 | mutex_lock(®ister_mutex); |
330 | rmidi = snd_rawmidi_search(card, device); |
331 | if (rmidi == NULL) { |
332 | mutex_unlock(®ister_mutex); |
333 | return -ENODEV; |
334 | } |
335 | if (!try_module_get(rmidi->card->module)) { |
336 | mutex_unlock(®ister_mutex); |
337 | return -ENXIO; |
338 | } |
339 | mutex_unlock(®ister_mutex); |
340 | |
341 | mutex_lock(&rmidi->open_mutex); |
342 | err = rawmidi_open_priv(rmidi, subdevice, mode, rfile); |
343 | mutex_unlock(&rmidi->open_mutex); |
344 | if (err < 0) |
345 | module_put(rmidi->card->module); |
346 | return err; |
347 | } |
348 | |
349 | static int snd_rawmidi_open(struct inode *inode, struct file *file) |
350 | { |
351 | int maj = imajor(inode); |
352 | struct snd_card *card; |
353 | int subdevice; |
354 | unsigned short fflags; |
355 | int err; |
356 | struct snd_rawmidi *rmidi; |
357 | struct snd_rawmidi_file *rawmidi_file = NULL; |
358 | wait_queue_t wait; |
359 | struct snd_ctl_file *kctl; |
360 | |
361 | if ((file->f_flags & O_APPEND) && !(file->f_flags & O_NONBLOCK)) |
362 | return -EINVAL; /* invalid combination */ |
363 | |
364 | err = nonseekable_open(inode, file); |
365 | if (err < 0) |
366 | return err; |
367 | |
368 | if (maj == snd_major) { |
369 | rmidi = snd_lookup_minor_data(iminor(inode), |
370 | SNDRV_DEVICE_TYPE_RAWMIDI); |
371 | #ifdef CONFIG_SND_OSSEMUL |
372 | } else if (maj == SOUND_MAJOR) { |
373 | rmidi = snd_lookup_oss_minor_data(iminor(inode), |
374 | SNDRV_OSS_DEVICE_TYPE_MIDI); |
375 | #endif |
376 | } else |
377 | return -ENXIO; |
378 | |
379 | if (rmidi == NULL) |
380 | return -ENODEV; |
381 | |
382 | if (!try_module_get(rmidi->card->module)) |
383 | return -ENXIO; |
384 | |
385 | mutex_lock(&rmidi->open_mutex); |
386 | card = rmidi->card; |
387 | err = snd_card_file_add(card, file); |
388 | if (err < 0) |
389 | goto __error_card; |
390 | fflags = snd_rawmidi_file_flags(file); |
391 | if ((file->f_flags & O_APPEND) || maj == SOUND_MAJOR) /* OSS emul? */ |
392 | fflags |= SNDRV_RAWMIDI_LFLG_APPEND; |
393 | rawmidi_file = kmalloc(sizeof(*rawmidi_file), GFP_KERNEL); |
394 | if (rawmidi_file == NULL) { |
395 | err = -ENOMEM; |
396 | goto __error; |
397 | } |
398 | init_waitqueue_entry(&wait, current); |
399 | add_wait_queue(&rmidi->open_wait, &wait); |
400 | while (1) { |
401 | subdevice = -1; |
402 | read_lock(&card->ctl_files_rwlock); |
403 | list_for_each_entry(kctl, &card->ctl_files, list) { |
404 | if (kctl->pid == task_pid(current)) { |
405 | subdevice = kctl->prefer_rawmidi_subdevice; |
406 | if (subdevice != -1) |
407 | break; |
408 | } |
409 | } |
410 | read_unlock(&card->ctl_files_rwlock); |
411 | err = rawmidi_open_priv(rmidi, subdevice, fflags, rawmidi_file); |
412 | if (err >= 0) |
413 | break; |
414 | if (err == -EAGAIN) { |
415 | if (file->f_flags & O_NONBLOCK) { |
416 | err = -EBUSY; |
417 | break; |
418 | } |
419 | } else |
420 | break; |
421 | set_current_state(TASK_INTERRUPTIBLE); |
422 | mutex_unlock(&rmidi->open_mutex); |
423 | schedule(); |
424 | mutex_lock(&rmidi->open_mutex); |
425 | if (signal_pending(current)) { |
426 | err = -ERESTARTSYS; |
427 | break; |
428 | } |
429 | } |
430 | remove_wait_queue(&rmidi->open_wait, &wait); |
431 | if (err < 0) { |
432 | kfree(rawmidi_file); |
433 | goto __error; |
434 | } |
435 | #ifdef CONFIG_SND_OSSEMUL |
436 | if (rawmidi_file->input && rawmidi_file->input->runtime) |
437 | rawmidi_file->input->runtime->oss = (maj == SOUND_MAJOR); |
438 | if (rawmidi_file->output && rawmidi_file->output->runtime) |
439 | rawmidi_file->output->runtime->oss = (maj == SOUND_MAJOR); |
440 | #endif |
441 | file->private_data = rawmidi_file; |
442 | mutex_unlock(&rmidi->open_mutex); |
443 | return 0; |
444 | |
445 | __error: |
446 | snd_card_file_remove(card, file); |
447 | __error_card: |
448 | mutex_unlock(&rmidi->open_mutex); |
449 | module_put(rmidi->card->module); |
450 | return err; |
451 | } |
452 | |
453 | static void close_substream(struct snd_rawmidi *rmidi, |
454 | struct snd_rawmidi_substream *substream, |
455 | int cleanup) |
456 | { |
457 | if (--substream->use_count) |
458 | return; |
459 | |
460 | if (cleanup) { |
461 | if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT) |
462 | snd_rawmidi_input_trigger(substream, 0); |
463 | else { |
464 | if (substream->active_sensing) { |
465 | unsigned char buf = 0xfe; |
466 | /* sending single active sensing message |
467 | * to shut the device up |
468 | */ |
469 | snd_rawmidi_kernel_write(substream, &buf, 1); |
470 | } |
471 | if (snd_rawmidi_drain_output(substream) == -ERESTARTSYS) |
472 | snd_rawmidi_output_trigger(substream, 0); |
473 | } |
474 | } |
475 | substream->ops->close(substream); |
476 | if (substream->runtime->private_free) |
477 | substream->runtime->private_free(substream); |
478 | snd_rawmidi_runtime_free(substream); |
479 | substream->opened = 0; |
480 | substream->append = 0; |
481 | put_pid(substream->pid); |
482 | substream->pid = NULL; |
483 | rmidi->streams[substream->stream].substream_opened--; |
484 | } |
485 | |
486 | static void rawmidi_release_priv(struct snd_rawmidi_file *rfile) |
487 | { |
488 | struct snd_rawmidi *rmidi; |
489 | |
490 | rmidi = rfile->rmidi; |
491 | mutex_lock(&rmidi->open_mutex); |
492 | if (rfile->input) { |
493 | close_substream(rmidi, rfile->input, 1); |
494 | rfile->input = NULL; |
495 | } |
496 | if (rfile->output) { |
497 | close_substream(rmidi, rfile->output, 1); |
498 | rfile->output = NULL; |
499 | } |
500 | rfile->rmidi = NULL; |
501 | mutex_unlock(&rmidi->open_mutex); |
502 | wake_up(&rmidi->open_wait); |
503 | } |
504 | |
505 | /* called from sound/core/seq/seq_midi.c */ |
506 | int snd_rawmidi_kernel_release(struct snd_rawmidi_file *rfile) |
507 | { |
508 | struct snd_rawmidi *rmidi; |
509 | |
510 | if (snd_BUG_ON(!rfile)) |
511 | return -ENXIO; |
512 | |
513 | rmidi = rfile->rmidi; |
514 | rawmidi_release_priv(rfile); |
515 | module_put(rmidi->card->module); |
516 | return 0; |
517 | } |
518 | |
519 | static int snd_rawmidi_release(struct inode *inode, struct file *file) |
520 | { |
521 | struct snd_rawmidi_file *rfile; |
522 | struct snd_rawmidi *rmidi; |
523 | struct module *module; |
524 | |
525 | rfile = file->private_data; |
526 | rmidi = rfile->rmidi; |
527 | rawmidi_release_priv(rfile); |
528 | kfree(rfile); |
529 | module = rmidi->card->module; |
530 | snd_card_file_remove(rmidi->card, file); |
531 | module_put(module); |
532 | return 0; |
533 | } |
534 | |
535 | static int snd_rawmidi_info(struct snd_rawmidi_substream *substream, |
536 | struct snd_rawmidi_info *info) |
537 | { |
538 | struct snd_rawmidi *rmidi; |
539 | |
540 | if (substream == NULL) |
541 | return -ENODEV; |
542 | rmidi = substream->rmidi; |
543 | memset(info, 0, sizeof(*info)); |
544 | info->card = rmidi->card->number; |
545 | info->device = rmidi->device; |
546 | info->subdevice = substream->number; |
547 | info->stream = substream->stream; |
548 | info->flags = rmidi->info_flags; |
549 | strcpy(info->id, rmidi->id); |
550 | strcpy(info->name, rmidi->name); |
551 | strcpy(info->subname, substream->name); |
552 | info->subdevices_count = substream->pstr->substream_count; |
553 | info->subdevices_avail = (substream->pstr->substream_count - |
554 | substream->pstr->substream_opened); |
555 | return 0; |
556 | } |
557 | |
558 | static int snd_rawmidi_info_user(struct snd_rawmidi_substream *substream, |
559 | struct snd_rawmidi_info __user * _info) |
560 | { |
561 | struct snd_rawmidi_info info; |
562 | int err; |
563 | if ((err = snd_rawmidi_info(substream, &info)) < 0) |
564 | return err; |
565 | if (copy_to_user(_info, &info, sizeof(struct snd_rawmidi_info))) |
566 | return -EFAULT; |
567 | return 0; |
568 | } |
569 | |
570 | int snd_rawmidi_info_select(struct snd_card *card, struct snd_rawmidi_info *info) |
571 | { |
572 | struct snd_rawmidi *rmidi; |
573 | struct snd_rawmidi_str *pstr; |
574 | struct snd_rawmidi_substream *substream; |
575 | |
576 | mutex_lock(®ister_mutex); |
577 | rmidi = snd_rawmidi_search(card, info->device); |
578 | mutex_unlock(®ister_mutex); |
579 | if (!rmidi) |
580 | return -ENXIO; |
581 | if (info->stream < 0 || info->stream > 1) |
582 | return -EINVAL; |
583 | pstr = &rmidi->streams[info->stream]; |
584 | if (pstr->substream_count == 0) |
585 | return -ENOENT; |
586 | if (info->subdevice >= pstr->substream_count) |
587 | return -ENXIO; |
588 | list_for_each_entry(substream, &pstr->substreams, list) { |
589 | if ((unsigned int)substream->number == info->subdevice) |
590 | return snd_rawmidi_info(substream, info); |
591 | } |
592 | return -ENXIO; |
593 | } |
594 | |
595 | static int snd_rawmidi_info_select_user(struct snd_card *card, |
596 | struct snd_rawmidi_info __user *_info) |
597 | { |
598 | int err; |
599 | struct snd_rawmidi_info info; |
600 | if (get_user(info.device, &_info->device)) |
601 | return -EFAULT; |
602 | if (get_user(info.stream, &_info->stream)) |
603 | return -EFAULT; |
604 | if (get_user(info.subdevice, &_info->subdevice)) |
605 | return -EFAULT; |
606 | if ((err = snd_rawmidi_info_select(card, &info)) < 0) |
607 | return err; |
608 | if (copy_to_user(_info, &info, sizeof(struct snd_rawmidi_info))) |
609 | return -EFAULT; |
610 | return 0; |
611 | } |
612 | |
613 | int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream, |
614 | struct snd_rawmidi_params * params) |
615 | { |
616 | char *newbuf; |
617 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
618 | |
619 | if (substream->append && substream->use_count > 1) |
620 | return -EBUSY; |
621 | snd_rawmidi_drain_output(substream); |
622 | if (params->buffer_size < 32 || params->buffer_size > 1024L * 1024L) { |
623 | return -EINVAL; |
624 | } |
625 | if (params->avail_min < 1 || params->avail_min > params->buffer_size) { |
626 | return -EINVAL; |
627 | } |
628 | if (params->buffer_size != runtime->buffer_size) { |
629 | newbuf = krealloc(runtime->buffer, params->buffer_size, |
630 | GFP_KERNEL); |
631 | if (!newbuf) |
632 | return -ENOMEM; |
633 | runtime->buffer = newbuf; |
634 | runtime->buffer_size = params->buffer_size; |
635 | runtime->avail = runtime->buffer_size; |
636 | } |
637 | runtime->avail_min = params->avail_min; |
638 | substream->active_sensing = !params->no_active_sensing; |
639 | return 0; |
640 | } |
641 | |
642 | int snd_rawmidi_input_params(struct snd_rawmidi_substream *substream, |
643 | struct snd_rawmidi_params * params) |
644 | { |
645 | char *newbuf; |
646 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
647 | |
648 | snd_rawmidi_drain_input(substream); |
649 | if (params->buffer_size < 32 || params->buffer_size > 1024L * 1024L) { |
650 | return -EINVAL; |
651 | } |
652 | if (params->avail_min < 1 || params->avail_min > params->buffer_size) { |
653 | return -EINVAL; |
654 | } |
655 | if (params->buffer_size != runtime->buffer_size) { |
656 | newbuf = krealloc(runtime->buffer, params->buffer_size, |
657 | GFP_KERNEL); |
658 | if (!newbuf) |
659 | return -ENOMEM; |
660 | runtime->buffer = newbuf; |
661 | runtime->buffer_size = params->buffer_size; |
662 | } |
663 | runtime->avail_min = params->avail_min; |
664 | return 0; |
665 | } |
666 | |
667 | static int snd_rawmidi_output_status(struct snd_rawmidi_substream *substream, |
668 | struct snd_rawmidi_status * status) |
669 | { |
670 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
671 | |
672 | memset(status, 0, sizeof(*status)); |
673 | status->stream = SNDRV_RAWMIDI_STREAM_OUTPUT; |
674 | spin_lock_irq(&runtime->lock); |
675 | status->avail = runtime->avail; |
676 | spin_unlock_irq(&runtime->lock); |
677 | return 0; |
678 | } |
679 | |
680 | static int snd_rawmidi_input_status(struct snd_rawmidi_substream *substream, |
681 | struct snd_rawmidi_status * status) |
682 | { |
683 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
684 | |
685 | memset(status, 0, sizeof(*status)); |
686 | status->stream = SNDRV_RAWMIDI_STREAM_INPUT; |
687 | spin_lock_irq(&runtime->lock); |
688 | status->avail = runtime->avail; |
689 | status->xruns = runtime->xruns; |
690 | runtime->xruns = 0; |
691 | spin_unlock_irq(&runtime->lock); |
692 | return 0; |
693 | } |
694 | |
695 | static long snd_rawmidi_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
696 | { |
697 | struct snd_rawmidi_file *rfile; |
698 | void __user *argp = (void __user *)arg; |
699 | |
700 | rfile = file->private_data; |
701 | if (((cmd >> 8) & 0xff) != 'W') |
702 | return -ENOTTY; |
703 | switch (cmd) { |
704 | case SNDRV_RAWMIDI_IOCTL_PVERSION: |
705 | return put_user(SNDRV_RAWMIDI_VERSION, (int __user *)argp) ? -EFAULT : 0; |
706 | case SNDRV_RAWMIDI_IOCTL_INFO: |
707 | { |
708 | int stream; |
709 | struct snd_rawmidi_info __user *info = argp; |
710 | if (get_user(stream, &info->stream)) |
711 | return -EFAULT; |
712 | switch (stream) { |
713 | case SNDRV_RAWMIDI_STREAM_INPUT: |
714 | return snd_rawmidi_info_user(rfile->input, info); |
715 | case SNDRV_RAWMIDI_STREAM_OUTPUT: |
716 | return snd_rawmidi_info_user(rfile->output, info); |
717 | default: |
718 | return -EINVAL; |
719 | } |
720 | } |
721 | case SNDRV_RAWMIDI_IOCTL_PARAMS: |
722 | { |
723 | struct snd_rawmidi_params params; |
724 | if (copy_from_user(¶ms, argp, sizeof(struct snd_rawmidi_params))) |
725 | return -EFAULT; |
726 | switch (params.stream) { |
727 | case SNDRV_RAWMIDI_STREAM_OUTPUT: |
728 | if (rfile->output == NULL) |
729 | return -EINVAL; |
730 | return snd_rawmidi_output_params(rfile->output, ¶ms); |
731 | case SNDRV_RAWMIDI_STREAM_INPUT: |
732 | if (rfile->input == NULL) |
733 | return -EINVAL; |
734 | return snd_rawmidi_input_params(rfile->input, ¶ms); |
735 | default: |
736 | return -EINVAL; |
737 | } |
738 | } |
739 | case SNDRV_RAWMIDI_IOCTL_STATUS: |
740 | { |
741 | int err = 0; |
742 | struct snd_rawmidi_status status; |
743 | if (copy_from_user(&status, argp, sizeof(struct snd_rawmidi_status))) |
744 | return -EFAULT; |
745 | switch (status.stream) { |
746 | case SNDRV_RAWMIDI_STREAM_OUTPUT: |
747 | if (rfile->output == NULL) |
748 | return -EINVAL; |
749 | err = snd_rawmidi_output_status(rfile->output, &status); |
750 | break; |
751 | case SNDRV_RAWMIDI_STREAM_INPUT: |
752 | if (rfile->input == NULL) |
753 | return -EINVAL; |
754 | err = snd_rawmidi_input_status(rfile->input, &status); |
755 | break; |
756 | default: |
757 | return -EINVAL; |
758 | } |
759 | if (err < 0) |
760 | return err; |
761 | if (copy_to_user(argp, &status, sizeof(struct snd_rawmidi_status))) |
762 | return -EFAULT; |
763 | return 0; |
764 | } |
765 | case SNDRV_RAWMIDI_IOCTL_DROP: |
766 | { |
767 | int val; |
768 | if (get_user(val, (int __user *) argp)) |
769 | return -EFAULT; |
770 | switch (val) { |
771 | case SNDRV_RAWMIDI_STREAM_OUTPUT: |
772 | if (rfile->output == NULL) |
773 | return -EINVAL; |
774 | return snd_rawmidi_drop_output(rfile->output); |
775 | default: |
776 | return -EINVAL; |
777 | } |
778 | } |
779 | case SNDRV_RAWMIDI_IOCTL_DRAIN: |
780 | { |
781 | int val; |
782 | if (get_user(val, (int __user *) argp)) |
783 | return -EFAULT; |
784 | switch (val) { |
785 | case SNDRV_RAWMIDI_STREAM_OUTPUT: |
786 | if (rfile->output == NULL) |
787 | return -EINVAL; |
788 | return snd_rawmidi_drain_output(rfile->output); |
789 | case SNDRV_RAWMIDI_STREAM_INPUT: |
790 | if (rfile->input == NULL) |
791 | return -EINVAL; |
792 | return snd_rawmidi_drain_input(rfile->input); |
793 | default: |
794 | return -EINVAL; |
795 | } |
796 | } |
797 | #ifdef CONFIG_SND_DEBUG |
798 | default: |
799 | snd_printk(KERN_WARNING "rawmidi: unknown command = 0x%x\n", cmd); |
800 | #endif |
801 | } |
802 | return -ENOTTY; |
803 | } |
804 | |
805 | static int snd_rawmidi_control_ioctl(struct snd_card *card, |
806 | struct snd_ctl_file *control, |
807 | unsigned int cmd, |
808 | unsigned long arg) |
809 | { |
810 | void __user *argp = (void __user *)arg; |
811 | |
812 | switch (cmd) { |
813 | case SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE: |
814 | { |
815 | int device; |
816 | |
817 | if (get_user(device, (int __user *)argp)) |
818 | return -EFAULT; |
819 | if (device >= SNDRV_RAWMIDI_DEVICES) /* next device is -1 */ |
820 | device = SNDRV_RAWMIDI_DEVICES - 1; |
821 | mutex_lock(®ister_mutex); |
822 | device = device < 0 ? 0 : device + 1; |
823 | while (device < SNDRV_RAWMIDI_DEVICES) { |
824 | if (snd_rawmidi_search(card, device)) |
825 | break; |
826 | device++; |
827 | } |
828 | if (device == SNDRV_RAWMIDI_DEVICES) |
829 | device = -1; |
830 | mutex_unlock(®ister_mutex); |
831 | if (put_user(device, (int __user *)argp)) |
832 | return -EFAULT; |
833 | return 0; |
834 | } |
835 | case SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE: |
836 | { |
837 | int val; |
838 | |
839 | if (get_user(val, (int __user *)argp)) |
840 | return -EFAULT; |
841 | control->prefer_rawmidi_subdevice = val; |
842 | return 0; |
843 | } |
844 | case SNDRV_CTL_IOCTL_RAWMIDI_INFO: |
845 | return snd_rawmidi_info_select_user(card, argp); |
846 | } |
847 | return -ENOIOCTLCMD; |
848 | } |
849 | |
850 | /** |
851 | * snd_rawmidi_receive - receive the input data from the device |
852 | * @substream: the rawmidi substream |
853 | * @buffer: the buffer pointer |
854 | * @count: the data size to read |
855 | * |
856 | * Reads the data from the internal buffer. |
857 | * |
858 | * Returns the size of read data, or a negative error code on failure. |
859 | */ |
860 | int snd_rawmidi_receive(struct snd_rawmidi_substream *substream, |
861 | const unsigned char *buffer, int count) |
862 | { |
863 | unsigned long flags; |
864 | int result = 0, count1; |
865 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
866 | |
867 | if (!substream->opened) |
868 | return -EBADFD; |
869 | if (runtime->buffer == NULL) { |
870 | snd_printd("snd_rawmidi_receive: input is not active!!!\n"); |
871 | return -EINVAL; |
872 | } |
873 | spin_lock_irqsave(&runtime->lock, flags); |
874 | if (count == 1) { /* special case, faster code */ |
875 | substream->bytes++; |
876 | if (runtime->avail < runtime->buffer_size) { |
877 | runtime->buffer[runtime->hw_ptr++] = buffer[0]; |
878 | runtime->hw_ptr %= runtime->buffer_size; |
879 | runtime->avail++; |
880 | result++; |
881 | } else { |
882 | runtime->xruns++; |
883 | } |
884 | } else { |
885 | substream->bytes += count; |
886 | count1 = runtime->buffer_size - runtime->hw_ptr; |
887 | if (count1 > count) |
888 | count1 = count; |
889 | if (count1 > (int)(runtime->buffer_size - runtime->avail)) |
890 | count1 = runtime->buffer_size - runtime->avail; |
891 | memcpy(runtime->buffer + runtime->hw_ptr, buffer, count1); |
892 | runtime->hw_ptr += count1; |
893 | runtime->hw_ptr %= runtime->buffer_size; |
894 | runtime->avail += count1; |
895 | count -= count1; |
896 | result += count1; |
897 | if (count > 0) { |
898 | buffer += count1; |
899 | count1 = count; |
900 | if (count1 > (int)(runtime->buffer_size - runtime->avail)) { |
901 | count1 = runtime->buffer_size - runtime->avail; |
902 | runtime->xruns += count - count1; |
903 | } |
904 | if (count1 > 0) { |
905 | memcpy(runtime->buffer, buffer, count1); |
906 | runtime->hw_ptr = count1; |
907 | runtime->avail += count1; |
908 | result += count1; |
909 | } |
910 | } |
911 | } |
912 | if (result > 0) { |
913 | if (runtime->event) |
914 | schedule_work(&runtime->event_work); |
915 | else if (snd_rawmidi_ready(substream)) |
916 | wake_up(&runtime->sleep); |
917 | } |
918 | spin_unlock_irqrestore(&runtime->lock, flags); |
919 | return result; |
920 | } |
921 | |
922 | static long snd_rawmidi_kernel_read1(struct snd_rawmidi_substream *substream, |
923 | unsigned char __user *userbuf, |
924 | unsigned char *kernelbuf, long count) |
925 | { |
926 | unsigned long flags; |
927 | long result = 0, count1; |
928 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
929 | |
930 | while (count > 0 && runtime->avail) { |
931 | count1 = runtime->buffer_size - runtime->appl_ptr; |
932 | if (count1 > count) |
933 | count1 = count; |
934 | spin_lock_irqsave(&runtime->lock, flags); |
935 | if (count1 > (int)runtime->avail) |
936 | count1 = runtime->avail; |
937 | if (kernelbuf) |
938 | memcpy(kernelbuf + result, runtime->buffer + runtime->appl_ptr, count1); |
939 | if (userbuf) { |
940 | spin_unlock_irqrestore(&runtime->lock, flags); |
941 | if (copy_to_user(userbuf + result, |
942 | runtime->buffer + runtime->appl_ptr, count1)) { |
943 | return result > 0 ? result : -EFAULT; |
944 | } |
945 | spin_lock_irqsave(&runtime->lock, flags); |
946 | } |
947 | runtime->appl_ptr += count1; |
948 | runtime->appl_ptr %= runtime->buffer_size; |
949 | runtime->avail -= count1; |
950 | spin_unlock_irqrestore(&runtime->lock, flags); |
951 | result += count1; |
952 | count -= count1; |
953 | } |
954 | return result; |
955 | } |
956 | |
957 | long snd_rawmidi_kernel_read(struct snd_rawmidi_substream *substream, |
958 | unsigned char *buf, long count) |
959 | { |
960 | snd_rawmidi_input_trigger(substream, 1); |
961 | return snd_rawmidi_kernel_read1(substream, NULL/*userbuf*/, buf, count); |
962 | } |
963 | |
964 | static ssize_t snd_rawmidi_read(struct file *file, char __user *buf, size_t count, |
965 | loff_t *offset) |
966 | { |
967 | long result; |
968 | int count1; |
969 | struct snd_rawmidi_file *rfile; |
970 | struct snd_rawmidi_substream *substream; |
971 | struct snd_rawmidi_runtime *runtime; |
972 | |
973 | rfile = file->private_data; |
974 | substream = rfile->input; |
975 | if (substream == NULL) |
976 | return -EIO; |
977 | runtime = substream->runtime; |
978 | snd_rawmidi_input_trigger(substream, 1); |
979 | result = 0; |
980 | while (count > 0) { |
981 | spin_lock_irq(&runtime->lock); |
982 | while (!snd_rawmidi_ready(substream)) { |
983 | wait_queue_t wait; |
984 | if ((file->f_flags & O_NONBLOCK) != 0 || result > 0) { |
985 | spin_unlock_irq(&runtime->lock); |
986 | return result > 0 ? result : -EAGAIN; |
987 | } |
988 | init_waitqueue_entry(&wait, current); |
989 | add_wait_queue(&runtime->sleep, &wait); |
990 | set_current_state(TASK_INTERRUPTIBLE); |
991 | spin_unlock_irq(&runtime->lock); |
992 | schedule(); |
993 | remove_wait_queue(&runtime->sleep, &wait); |
994 | if (signal_pending(current)) |
995 | return result > 0 ? result : -ERESTARTSYS; |
996 | if (!runtime->avail) |
997 | return result > 0 ? result : -EIO; |
998 | spin_lock_irq(&runtime->lock); |
999 | } |
1000 | spin_unlock_irq(&runtime->lock); |
1001 | count1 = snd_rawmidi_kernel_read1(substream, |
1002 | (unsigned char __user *)buf, |
1003 | NULL/*kernelbuf*/, |
1004 | count); |
1005 | if (count1 < 0) |
1006 | return result > 0 ? result : count1; |
1007 | result += count1; |
1008 | buf += count1; |
1009 | count -= count1; |
1010 | } |
1011 | return result; |
1012 | } |
1013 | |
1014 | /** |
1015 | * snd_rawmidi_transmit_empty - check whether the output buffer is empty |
1016 | * @substream: the rawmidi substream |
1017 | * |
1018 | * Returns 1 if the internal output buffer is empty, 0 if not. |
1019 | */ |
1020 | int snd_rawmidi_transmit_empty(struct snd_rawmidi_substream *substream) |
1021 | { |
1022 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
1023 | int result; |
1024 | unsigned long flags; |
1025 | |
1026 | if (runtime->buffer == NULL) { |
1027 | snd_printd("snd_rawmidi_transmit_empty: output is not active!!!\n"); |
1028 | return 1; |
1029 | } |
1030 | spin_lock_irqsave(&runtime->lock, flags); |
1031 | result = runtime->avail >= runtime->buffer_size; |
1032 | spin_unlock_irqrestore(&runtime->lock, flags); |
1033 | return result; |
1034 | } |
1035 | |
1036 | /** |
1037 | * snd_rawmidi_transmit_peek - copy data from the internal buffer |
1038 | * @substream: the rawmidi substream |
1039 | * @buffer: the buffer pointer |
1040 | * @count: data size to transfer |
1041 | * |
1042 | * Copies data from the internal output buffer to the given buffer. |
1043 | * |
1044 | * Call this in the interrupt handler when the midi output is ready, |
1045 | * and call snd_rawmidi_transmit_ack() after the transmission is |
1046 | * finished. |
1047 | * |
1048 | * Returns the size of copied data, or a negative error code on failure. |
1049 | */ |
1050 | int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream, |
1051 | unsigned char *buffer, int count) |
1052 | { |
1053 | unsigned long flags; |
1054 | int result, count1; |
1055 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
1056 | |
1057 | if (runtime->buffer == NULL) { |
1058 | snd_printd("snd_rawmidi_transmit_peek: output is not active!!!\n"); |
1059 | return -EINVAL; |
1060 | } |
1061 | result = 0; |
1062 | spin_lock_irqsave(&runtime->lock, flags); |
1063 | if (runtime->avail >= runtime->buffer_size) { |
1064 | /* warning: lowlevel layer MUST trigger down the hardware */ |
1065 | goto __skip; |
1066 | } |
1067 | if (count == 1) { /* special case, faster code */ |
1068 | *buffer = runtime->buffer[runtime->hw_ptr]; |
1069 | result++; |
1070 | } else { |
1071 | count1 = runtime->buffer_size - runtime->hw_ptr; |
1072 | if (count1 > count) |
1073 | count1 = count; |
1074 | if (count1 > (int)(runtime->buffer_size - runtime->avail)) |
1075 | count1 = runtime->buffer_size - runtime->avail; |
1076 | memcpy(buffer, runtime->buffer + runtime->hw_ptr, count1); |
1077 | count -= count1; |
1078 | result += count1; |
1079 | if (count > 0) { |
1080 | if (count > (int)(runtime->buffer_size - runtime->avail - count1)) |
1081 | count = runtime->buffer_size - runtime->avail - count1; |
1082 | memcpy(buffer + count1, runtime->buffer, count); |
1083 | result += count; |
1084 | } |
1085 | } |
1086 | __skip: |
1087 | spin_unlock_irqrestore(&runtime->lock, flags); |
1088 | return result; |
1089 | } |
1090 | |
1091 | /** |
1092 | * snd_rawmidi_transmit_ack - acknowledge the transmission |
1093 | * @substream: the rawmidi substream |
1094 | * @count: the tranferred count |
1095 | * |
1096 | * Advances the hardware pointer for the internal output buffer with |
1097 | * the given size and updates the condition. |
1098 | * Call after the transmission is finished. |
1099 | * |
1100 | * Returns the advanced size if successful, or a negative error code on failure. |
1101 | */ |
1102 | int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count) |
1103 | { |
1104 | unsigned long flags; |
1105 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
1106 | |
1107 | if (runtime->buffer == NULL) { |
1108 | snd_printd("snd_rawmidi_transmit_ack: output is not active!!!\n"); |
1109 | return -EINVAL; |
1110 | } |
1111 | spin_lock_irqsave(&runtime->lock, flags); |
1112 | snd_BUG_ON(runtime->avail + count > runtime->buffer_size); |
1113 | runtime->hw_ptr += count; |
1114 | runtime->hw_ptr %= runtime->buffer_size; |
1115 | runtime->avail += count; |
1116 | substream->bytes += count; |
1117 | if (count > 0) { |
1118 | if (runtime->drain || snd_rawmidi_ready(substream)) |
1119 | wake_up(&runtime->sleep); |
1120 | } |
1121 | spin_unlock_irqrestore(&runtime->lock, flags); |
1122 | return count; |
1123 | } |
1124 | |
1125 | /** |
1126 | * snd_rawmidi_transmit - copy from the buffer to the device |
1127 | * @substream: the rawmidi substream |
1128 | * @buffer: the buffer pointer |
1129 | * @count: the data size to transfer |
1130 | * |
1131 | * Copies data from the buffer to the device and advances the pointer. |
1132 | * |
1133 | * Returns the copied size if successful, or a negative error code on failure. |
1134 | */ |
1135 | int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream, |
1136 | unsigned char *buffer, int count) |
1137 | { |
1138 | if (!substream->opened) |
1139 | return -EBADFD; |
1140 | count = snd_rawmidi_transmit_peek(substream, buffer, count); |
1141 | if (count < 0) |
1142 | return count; |
1143 | return snd_rawmidi_transmit_ack(substream, count); |
1144 | } |
1145 | |
1146 | static long snd_rawmidi_kernel_write1(struct snd_rawmidi_substream *substream, |
1147 | const unsigned char __user *userbuf, |
1148 | const unsigned char *kernelbuf, |
1149 | long count) |
1150 | { |
1151 | unsigned long flags; |
1152 | long count1, result; |
1153 | struct snd_rawmidi_runtime *runtime = substream->runtime; |
1154 | |
1155 | if (snd_BUG_ON(!kernelbuf && !userbuf)) |
1156 | return -EINVAL; |
1157 | if (snd_BUG_ON(!runtime->buffer)) |
1158 | return -EINVAL; |
1159 | |
1160 | result = 0; |
1161 | spin_lock_irqsave(&runtime->lock, flags); |
1162 | if (substream->append) { |
1163 | if ((long)runtime->avail < count) { |
1164 | spin_unlock_irqrestore(&runtime->lock, flags); |
1165 | return -EAGAIN; |
1166 | } |
1167 | } |
1168 | while (count > 0 && runtime->avail > 0) { |
1169 | count1 = runtime->buffer_size - runtime->appl_ptr; |
1170 | if (count1 > count) |
1171 | count1 = count; |
1172 | if (count1 > (long)runtime->avail) |
1173 | count1 = runtime->avail; |
1174 | if (kernelbuf) |
1175 | memcpy(runtime->buffer + runtime->appl_ptr, |
1176 | kernelbuf + result, count1); |
1177 | else if (userbuf) { |
1178 | spin_unlock_irqrestore(&runtime->lock, flags); |
1179 | if (copy_from_user(runtime->buffer + runtime->appl_ptr, |
1180 | userbuf + result, count1)) { |
1181 | spin_lock_irqsave(&runtime->lock, flags); |
1182 | result = result > 0 ? result : -EFAULT; |
1183 | goto __end; |
1184 | } |
1185 | spin_lock_irqsave(&runtime->lock, flags); |
1186 | } |
1187 | runtime->appl_ptr += count1; |
1188 | runtime->appl_ptr %= runtime->buffer_size; |
1189 | runtime->avail -= count1; |
1190 | result += count1; |
1191 | count -= count1; |
1192 | } |
1193 | __end: |
1194 | count1 = runtime->avail < runtime->buffer_size; |
1195 | spin_unlock_irqrestore(&runtime->lock, flags); |
1196 | if (count1) |
1197 | snd_rawmidi_output_trigger(substream, 1); |
1198 | return result; |
1199 | } |
1200 | |
1201 | long snd_rawmidi_kernel_write(struct snd_rawmidi_substream *substream, |
1202 | const unsigned char *buf, long count) |
1203 | { |
1204 | return snd_rawmidi_kernel_write1(substream, NULL, buf, count); |
1205 | } |
1206 | |
1207 | static ssize_t snd_rawmidi_write(struct file *file, const char __user *buf, |
1208 | size_t count, loff_t *offset) |
1209 | { |
1210 | long result, timeout; |
1211 | int count1; |
1212 | struct snd_rawmidi_file *rfile; |
1213 | struct snd_rawmidi_runtime *runtime; |
1214 | struct snd_rawmidi_substream *substream; |
1215 | |
1216 | rfile = file->private_data; |
1217 | substream = rfile->output; |
1218 | runtime = substream->runtime; |
1219 | /* we cannot put an atomic message to our buffer */ |
1220 | if (substream->append && count > runtime->buffer_size) |
1221 | return -EIO; |
1222 | result = 0; |
1223 | while (count > 0) { |
1224 | spin_lock_irq(&runtime->lock); |
1225 | while (!snd_rawmidi_ready_append(substream, count)) { |
1226 | wait_queue_t wait; |
1227 | if (file->f_flags & O_NONBLOCK) { |
1228 | spin_unlock_irq(&runtime->lock); |
1229 | return result > 0 ? result : -EAGAIN; |
1230 | } |
1231 | init_waitqueue_entry(&wait, current); |
1232 | add_wait_queue(&runtime->sleep, &wait); |
1233 | set_current_state(TASK_INTERRUPTIBLE); |
1234 | spin_unlock_irq(&runtime->lock); |
1235 | timeout = schedule_timeout(30 * HZ); |
1236 | remove_wait_queue(&runtime->sleep, &wait); |
1237 | if (signal_pending(current)) |
1238 | return result > 0 ? result : -ERESTARTSYS; |
1239 | if (!runtime->avail && !timeout) |
1240 | return result > 0 ? result : -EIO; |
1241 | spin_lock_irq(&runtime->lock); |
1242 | } |
1243 | spin_unlock_irq(&runtime->lock); |
1244 | count1 = snd_rawmidi_kernel_write1(substream, buf, NULL, count); |
1245 | if (count1 < 0) |
1246 | return result > 0 ? result : count1; |
1247 | result += count1; |
1248 | buf += count1; |
1249 | if ((size_t)count1 < count && (file->f_flags & O_NONBLOCK)) |
1250 | break; |
1251 | count -= count1; |
1252 | } |
1253 | if (file->f_flags & O_DSYNC) { |
1254 | spin_lock_irq(&runtime->lock); |
1255 | while (runtime->avail != runtime->buffer_size) { |
1256 | wait_queue_t wait; |
1257 | unsigned int last_avail = runtime->avail; |
1258 | init_waitqueue_entry(&wait, current); |
1259 | add_wait_queue(&runtime->sleep, &wait); |
1260 | set_current_state(TASK_INTERRUPTIBLE); |
1261 | spin_unlock_irq(&runtime->lock); |
1262 | timeout = schedule_timeout(30 * HZ); |
1263 | remove_wait_queue(&runtime->sleep, &wait); |
1264 | if (signal_pending(current)) |
1265 | return result > 0 ? result : -ERESTARTSYS; |
1266 | if (runtime->avail == last_avail && !timeout) |
1267 | return result > 0 ? result : -EIO; |
1268 | spin_lock_irq(&runtime->lock); |
1269 | } |
1270 | spin_unlock_irq(&runtime->lock); |
1271 | } |
1272 | return result; |
1273 | } |
1274 | |
1275 | static unsigned int snd_rawmidi_poll(struct file *file, poll_table * wait) |
1276 | { |
1277 | struct snd_rawmidi_file *rfile; |
1278 | struct snd_rawmidi_runtime *runtime; |
1279 | unsigned int mask; |
1280 | |
1281 | rfile = file->private_data; |
1282 | if (rfile->input != NULL) { |
1283 | runtime = rfile->input->runtime; |
1284 | snd_rawmidi_input_trigger(rfile->input, 1); |
1285 | poll_wait(file, &runtime->sleep, wait); |
1286 | } |
1287 | if (rfile->output != NULL) { |
1288 | runtime = rfile->output->runtime; |
1289 | poll_wait(file, &runtime->sleep, wait); |
1290 | } |
1291 | mask = 0; |
1292 | if (rfile->input != NULL) { |
1293 | if (snd_rawmidi_ready(rfile->input)) |
1294 | mask |= POLLIN | POLLRDNORM; |
1295 | } |
1296 | if (rfile->output != NULL) { |
1297 | if (snd_rawmidi_ready(rfile->output)) |
1298 | mask |= POLLOUT | POLLWRNORM; |
1299 | } |
1300 | return mask; |
1301 | } |
1302 | |
1303 | /* |
1304 | */ |
1305 | #ifdef CONFIG_COMPAT |
1306 | #include "rawmidi_compat.c" |
1307 | #else |
1308 | #define snd_rawmidi_ioctl_compat NULL |
1309 | #endif |
1310 | |
1311 | /* |
1312 | |
1313 | */ |
1314 | |
1315 | static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry, |
1316 | struct snd_info_buffer *buffer) |
1317 | { |
1318 | struct snd_rawmidi *rmidi; |
1319 | struct snd_rawmidi_substream *substream; |
1320 | struct snd_rawmidi_runtime *runtime; |
1321 | |
1322 | rmidi = entry->private_data; |
1323 | snd_iprintf(buffer, "%s\n\n", rmidi->name); |
1324 | mutex_lock(&rmidi->open_mutex); |
1325 | if (rmidi->info_flags & SNDRV_RAWMIDI_INFO_OUTPUT) { |
1326 | list_for_each_entry(substream, |
1327 | &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams, |
1328 | list) { |
1329 | snd_iprintf(buffer, |
1330 | "Output %d\n" |
1331 | " Tx bytes : %lu\n", |
1332 | substream->number, |
1333 | (unsigned long) substream->bytes); |
1334 | if (substream->opened) { |
1335 | snd_iprintf(buffer, |
1336 | " Owner PID : %d\n", |
1337 | pid_vnr(substream->pid)); |
1338 | runtime = substream->runtime; |
1339 | snd_iprintf(buffer, |
1340 | " Mode : %s\n" |
1341 | " Buffer size : %lu\n" |
1342 | " Avail : %lu\n", |
1343 | runtime->oss ? "OSS compatible" : "native", |
1344 | (unsigned long) runtime->buffer_size, |
1345 | (unsigned long) runtime->avail); |
1346 | } |
1347 | } |
1348 | } |
1349 | if (rmidi->info_flags & SNDRV_RAWMIDI_INFO_INPUT) { |
1350 | list_for_each_entry(substream, |
1351 | &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams, |
1352 | list) { |
1353 | snd_iprintf(buffer, |
1354 | "Input %d\n" |
1355 | " Rx bytes : %lu\n", |
1356 | substream->number, |
1357 | (unsigned long) substream->bytes); |
1358 | if (substream->opened) { |
1359 | snd_iprintf(buffer, |
1360 | " Owner PID : %d\n", |
1361 | pid_vnr(substream->pid)); |
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 | .llseek = no_llseek, |
1388 | .poll = snd_rawmidi_poll, |
1389 | .unlocked_ioctl = snd_rawmidi_ioctl, |
1390 | .compat_ioctl = snd_rawmidi_ioctl_compat, |
1391 | }; |
1392 | |
1393 | static int snd_rawmidi_alloc_substreams(struct snd_rawmidi *rmidi, |
1394 | struct snd_rawmidi_str *stream, |
1395 | int direction, |
1396 | int count) |
1397 | { |
1398 | struct snd_rawmidi_substream *substream; |
1399 | int idx; |
1400 | |
1401 | for (idx = 0; idx < count; idx++) { |
1402 | substream = kzalloc(sizeof(*substream), GFP_KERNEL); |
1403 | if (substream == NULL) { |
1404 | snd_printk(KERN_ERR "rawmidi: cannot allocate substream\n"); |
1405 | return -ENOMEM; |
1406 | } |
1407 | substream->stream = direction; |
1408 | substream->number = idx; |
1409 | substream->rmidi = rmidi; |
1410 | substream->pstr = stream; |
1411 | list_add_tail(&substream->list, &stream->substreams); |
1412 | stream->substream_count++; |
1413 | } |
1414 | return 0; |
1415 | } |
1416 | |
1417 | /** |
1418 | * snd_rawmidi_new - create a rawmidi instance |
1419 | * @card: the card instance |
1420 | * @id: the id string |
1421 | * @device: the device index |
1422 | * @output_count: the number of output streams |
1423 | * @input_count: the number of input streams |
1424 | * @rrawmidi: the pointer to store the new rawmidi instance |
1425 | * |
1426 | * Creates a new rawmidi instance. |
1427 | * Use snd_rawmidi_set_ops() to set the operators to the new instance. |
1428 | * |
1429 | * Returns zero if successful, or a negative error code on failure. |
1430 | */ |
1431 | int snd_rawmidi_new(struct snd_card *card, char *id, int device, |
1432 | int output_count, int input_count, |
1433 | struct snd_rawmidi ** rrawmidi) |
1434 | { |
1435 | struct snd_rawmidi *rmidi; |
1436 | int err; |
1437 | static struct snd_device_ops ops = { |
1438 | .dev_free = snd_rawmidi_dev_free, |
1439 | .dev_register = snd_rawmidi_dev_register, |
1440 | .dev_disconnect = snd_rawmidi_dev_disconnect, |
1441 | }; |
1442 | |
1443 | if (snd_BUG_ON(!card)) |
1444 | return -ENXIO; |
1445 | if (rrawmidi) |
1446 | *rrawmidi = NULL; |
1447 | rmidi = kzalloc(sizeof(*rmidi), GFP_KERNEL); |
1448 | if (rmidi == NULL) { |
1449 | snd_printk(KERN_ERR "rawmidi: cannot allocate\n"); |
1450 | return -ENOMEM; |
1451 | } |
1452 | rmidi->card = card; |
1453 | rmidi->device = device; |
1454 | mutex_init(&rmidi->open_mutex); |
1455 | init_waitqueue_head(&rmidi->open_wait); |
1456 | INIT_LIST_HEAD(&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams); |
1457 | INIT_LIST_HEAD(&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams); |
1458 | |
1459 | if (id != NULL) |
1460 | strlcpy(rmidi->id, id, sizeof(rmidi->id)); |
1461 | if ((err = snd_rawmidi_alloc_substreams(rmidi, |
1462 | &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT], |
1463 | SNDRV_RAWMIDI_STREAM_INPUT, |
1464 | input_count)) < 0) { |
1465 | snd_rawmidi_free(rmidi); |
1466 | return err; |
1467 | } |
1468 | if ((err = snd_rawmidi_alloc_substreams(rmidi, |
1469 | &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT], |
1470 | SNDRV_RAWMIDI_STREAM_OUTPUT, |
1471 | output_count)) < 0) { |
1472 | snd_rawmidi_free(rmidi); |
1473 | return err; |
1474 | } |
1475 | if ((err = snd_device_new(card, SNDRV_DEV_RAWMIDI, rmidi, &ops)) < 0) { |
1476 | snd_rawmidi_free(rmidi); |
1477 | return err; |
1478 | } |
1479 | if (rrawmidi) |
1480 | *rrawmidi = rmidi; |
1481 | return 0; |
1482 | } |
1483 | |
1484 | static void snd_rawmidi_free_substreams(struct snd_rawmidi_str *stream) |
1485 | { |
1486 | struct snd_rawmidi_substream *substream; |
1487 | |
1488 | while (!list_empty(&stream->substreams)) { |
1489 | substream = list_entry(stream->substreams.next, struct snd_rawmidi_substream, list); |
1490 | list_del(&substream->list); |
1491 | kfree(substream); |
1492 | } |
1493 | } |
1494 | |
1495 | static int snd_rawmidi_free(struct snd_rawmidi *rmidi) |
1496 | { |
1497 | if (!rmidi) |
1498 | return 0; |
1499 | |
1500 | snd_info_free_entry(rmidi->proc_entry); |
1501 | rmidi->proc_entry = NULL; |
1502 | mutex_lock(®ister_mutex); |
1503 | if (rmidi->ops && rmidi->ops->dev_unregister) |
1504 | rmidi->ops->dev_unregister(rmidi); |
1505 | mutex_unlock(®ister_mutex); |
1506 | |
1507 | snd_rawmidi_free_substreams(&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]); |
1508 | snd_rawmidi_free_substreams(&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]); |
1509 | if (rmidi->private_free) |
1510 | rmidi->private_free(rmidi); |
1511 | kfree(rmidi); |
1512 | return 0; |
1513 | } |
1514 | |
1515 | static int snd_rawmidi_dev_free(struct snd_device *device) |
1516 | { |
1517 | struct snd_rawmidi *rmidi = device->device_data; |
1518 | return snd_rawmidi_free(rmidi); |
1519 | } |
1520 | |
1521 | #if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE)) |
1522 | static void snd_rawmidi_dev_seq_free(struct snd_seq_device *device) |
1523 | { |
1524 | struct snd_rawmidi *rmidi = device->private_data; |
1525 | rmidi->seq_dev = NULL; |
1526 | } |
1527 | #endif |
1528 | |
1529 | static int snd_rawmidi_dev_register(struct snd_device *device) |
1530 | { |
1531 | int err; |
1532 | struct snd_info_entry *entry; |
1533 | char name[16]; |
1534 | struct snd_rawmidi *rmidi = device->device_data; |
1535 | |
1536 | if (rmidi->device >= SNDRV_RAWMIDI_DEVICES) |
1537 | return -ENOMEM; |
1538 | mutex_lock(®ister_mutex); |
1539 | if (snd_rawmidi_search(rmidi->card, rmidi->device)) { |
1540 | mutex_unlock(®ister_mutex); |
1541 | return -EBUSY; |
1542 | } |
1543 | list_add_tail(&rmidi->list, &snd_rawmidi_devices); |
1544 | sprintf(name, "midiC%iD%i", rmidi->card->number, rmidi->device); |
1545 | if ((err = snd_register_device(SNDRV_DEVICE_TYPE_RAWMIDI, |
1546 | rmidi->card, rmidi->device, |
1547 | &snd_rawmidi_f_ops, rmidi, name)) < 0) { |
1548 | snd_printk(KERN_ERR "unable to register rawmidi device %i:%i\n", rmidi->card->number, rmidi->device); |
1549 | list_del(&rmidi->list); |
1550 | mutex_unlock(®ister_mutex); |
1551 | return err; |
1552 | } |
1553 | if (rmidi->ops && rmidi->ops->dev_register && |
1554 | (err = rmidi->ops->dev_register(rmidi)) < 0) { |
1555 | snd_unregister_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device); |
1556 | list_del(&rmidi->list); |
1557 | mutex_unlock(®ister_mutex); |
1558 | return err; |
1559 | } |
1560 | #ifdef CONFIG_SND_OSSEMUL |
1561 | rmidi->ossreg = 0; |
1562 | if ((int)rmidi->device == midi_map[rmidi->card->number]) { |
1563 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, |
1564 | rmidi->card, 0, &snd_rawmidi_f_ops, |
1565 | rmidi, name) < 0) { |
1566 | snd_printk(KERN_ERR "unable to register OSS rawmidi device %i:%i\n", rmidi->card->number, 0); |
1567 | } else { |
1568 | rmidi->ossreg++; |
1569 | #ifdef SNDRV_OSS_INFO_DEV_MIDI |
1570 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIDI, rmidi->card->number, rmidi->name); |
1571 | #endif |
1572 | } |
1573 | } |
1574 | if ((int)rmidi->device == amidi_map[rmidi->card->number]) { |
1575 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, |
1576 | rmidi->card, 1, &snd_rawmidi_f_ops, |
1577 | rmidi, name) < 0) { |
1578 | snd_printk(KERN_ERR "unable to register OSS rawmidi device %i:%i\n", rmidi->card->number, 1); |
1579 | } else { |
1580 | rmidi->ossreg++; |
1581 | } |
1582 | } |
1583 | #endif /* CONFIG_SND_OSSEMUL */ |
1584 | mutex_unlock(®ister_mutex); |
1585 | sprintf(name, "midi%d", rmidi->device); |
1586 | entry = snd_info_create_card_entry(rmidi->card, name, rmidi->card->proc_root); |
1587 | if (entry) { |
1588 | entry->private_data = rmidi; |
1589 | entry->c.text.read = snd_rawmidi_proc_info_read; |
1590 | if (snd_info_register(entry) < 0) { |
1591 | snd_info_free_entry(entry); |
1592 | entry = NULL; |
1593 | } |
1594 | } |
1595 | rmidi->proc_entry = entry; |
1596 | #if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE)) |
1597 | if (!rmidi->ops || !rmidi->ops->dev_register) { /* own registration mechanism */ |
1598 | if (snd_seq_device_new(rmidi->card, rmidi->device, SNDRV_SEQ_DEV_ID_MIDISYNTH, 0, &rmidi->seq_dev) >= 0) { |
1599 | rmidi->seq_dev->private_data = rmidi; |
1600 | rmidi->seq_dev->private_free = snd_rawmidi_dev_seq_free; |
1601 | sprintf(rmidi->seq_dev->name, "MIDI %d-%d", rmidi->card->number, rmidi->device); |
1602 | snd_device_register(rmidi->card, rmidi->seq_dev); |
1603 | } |
1604 | } |
1605 | #endif |
1606 | return 0; |
1607 | } |
1608 | |
1609 | static int snd_rawmidi_dev_disconnect(struct snd_device *device) |
1610 | { |
1611 | struct snd_rawmidi *rmidi = device->device_data; |
1612 | |
1613 | mutex_lock(®ister_mutex); |
1614 | list_del_init(&rmidi->list); |
1615 | #ifdef CONFIG_SND_OSSEMUL |
1616 | if (rmidi->ossreg) { |
1617 | if ((int)rmidi->device == midi_map[rmidi->card->number]) { |
1618 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, rmidi->card, 0); |
1619 | #ifdef SNDRV_OSS_INFO_DEV_MIDI |
1620 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIDI, rmidi->card->number); |
1621 | #endif |
1622 | } |
1623 | if ((int)rmidi->device == amidi_map[rmidi->card->number]) |
1624 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, rmidi->card, 1); |
1625 | rmidi->ossreg = 0; |
1626 | } |
1627 | #endif /* CONFIG_SND_OSSEMUL */ |
1628 | snd_unregister_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device); |
1629 | mutex_unlock(®ister_mutex); |
1630 | return 0; |
1631 | } |
1632 | |
1633 | /** |
1634 | * snd_rawmidi_set_ops - set the rawmidi operators |
1635 | * @rmidi: the rawmidi instance |
1636 | * @stream: the stream direction, SNDRV_RAWMIDI_STREAM_XXX |
1637 | * @ops: the operator table |
1638 | * |
1639 | * Sets the rawmidi operators for the given stream direction. |
1640 | */ |
1641 | void snd_rawmidi_set_ops(struct snd_rawmidi *rmidi, int stream, |
1642 | struct snd_rawmidi_ops *ops) |
1643 | { |
1644 | struct snd_rawmidi_substream *substream; |
1645 | |
1646 | list_for_each_entry(substream, &rmidi->streams[stream].substreams, list) |
1647 | substream->ops = ops; |
1648 | } |
1649 | |
1650 | /* |
1651 | * ENTRY functions |
1652 | */ |
1653 | |
1654 | static int __init alsa_rawmidi_init(void) |
1655 | { |
1656 | |
1657 | snd_ctl_register_ioctl(snd_rawmidi_control_ioctl); |
1658 | snd_ctl_register_ioctl_compat(snd_rawmidi_control_ioctl); |
1659 | #ifdef CONFIG_SND_OSSEMUL |
1660 | { int i; |
1661 | /* check device map table */ |
1662 | for (i = 0; i < SNDRV_CARDS; i++) { |
1663 | if (midi_map[i] < 0 || midi_map[i] >= SNDRV_RAWMIDI_DEVICES) { |
1664 | snd_printk(KERN_ERR "invalid midi_map[%d] = %d\n", i, midi_map[i]); |
1665 | midi_map[i] = 0; |
1666 | } |
1667 | if (amidi_map[i] < 0 || amidi_map[i] >= SNDRV_RAWMIDI_DEVICES) { |
1668 | snd_printk(KERN_ERR "invalid amidi_map[%d] = %d\n", i, amidi_map[i]); |
1669 | amidi_map[i] = 1; |
1670 | } |
1671 | } |
1672 | } |
1673 | #endif /* CONFIG_SND_OSSEMUL */ |
1674 | return 0; |
1675 | } |
1676 | |
1677 | static void __exit alsa_rawmidi_exit(void) |
1678 | { |
1679 | snd_ctl_unregister_ioctl(snd_rawmidi_control_ioctl); |
1680 | snd_ctl_unregister_ioctl_compat(snd_rawmidi_control_ioctl); |
1681 | } |
1682 | |
1683 | module_init(alsa_rawmidi_init) |
1684 | module_exit(alsa_rawmidi_exit) |
1685 | |
1686 | EXPORT_SYMBOL(snd_rawmidi_output_params); |
1687 | EXPORT_SYMBOL(snd_rawmidi_input_params); |
1688 | EXPORT_SYMBOL(snd_rawmidi_drop_output); |
1689 | EXPORT_SYMBOL(snd_rawmidi_drain_output); |
1690 | EXPORT_SYMBOL(snd_rawmidi_drain_input); |
1691 | EXPORT_SYMBOL(snd_rawmidi_receive); |
1692 | EXPORT_SYMBOL(snd_rawmidi_transmit_empty); |
1693 | EXPORT_SYMBOL(snd_rawmidi_transmit_peek); |
1694 | EXPORT_SYMBOL(snd_rawmidi_transmit_ack); |
1695 | EXPORT_SYMBOL(snd_rawmidi_transmit); |
1696 | EXPORT_SYMBOL(snd_rawmidi_new); |
1697 | EXPORT_SYMBOL(snd_rawmidi_set_ops); |
1698 | EXPORT_SYMBOL(snd_rawmidi_info_select); |
1699 | EXPORT_SYMBOL(snd_rawmidi_kernel_open); |
1700 | EXPORT_SYMBOL(snd_rawmidi_kernel_release); |
1701 | EXPORT_SYMBOL(snd_rawmidi_kernel_read); |
1702 | EXPORT_SYMBOL(snd_rawmidi_kernel_write); |
1703 |
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