Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Digital Audio (PCM) abstract layer | |
3 | * Copyright (c) by Jaroslav Kysela <perex@suse.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/driver.h> | |
23 | #include <linux/mm.h> | |
24 | #include <linux/smp_lock.h> | |
25 | #include <linux/file.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/time.h> | |
9442e691 | 28 | #include <linux/latency.h> |
1da177e4 LT |
29 | #include <linux/uio.h> |
30 | #include <sound/core.h> | |
31 | #include <sound/control.h> | |
32 | #include <sound/info.h> | |
33 | #include <sound/pcm.h> | |
34 | #include <sound/pcm_params.h> | |
35 | #include <sound/timer.h> | |
36 | #include <sound/minors.h> | |
37 | #include <asm/io.h> | |
38 | ||
39 | /* | |
40 | * Compatibility | |
41 | */ | |
42 | ||
877211f5 | 43 | struct snd_pcm_hw_params_old { |
1da177e4 LT |
44 | unsigned int flags; |
45 | unsigned int masks[SNDRV_PCM_HW_PARAM_SUBFORMAT - | |
46 | SNDRV_PCM_HW_PARAM_ACCESS + 1]; | |
877211f5 | 47 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_TICK_TIME - |
1da177e4 LT |
48 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS + 1]; |
49 | unsigned int rmask; | |
50 | unsigned int cmask; | |
51 | unsigned int info; | |
52 | unsigned int msbits; | |
53 | unsigned int rate_num; | |
54 | unsigned int rate_den; | |
877211f5 | 55 | snd_pcm_uframes_t fifo_size; |
1da177e4 LT |
56 | unsigned char reserved[64]; |
57 | }; | |
58 | ||
59d48582 | 59 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
877211f5 TI |
60 | #define SNDRV_PCM_IOCTL_HW_REFINE_OLD _IOWR('A', 0x10, struct snd_pcm_hw_params_old) |
61 | #define SNDRV_PCM_IOCTL_HW_PARAMS_OLD _IOWR('A', 0x11, struct snd_pcm_hw_params_old) | |
1da177e4 | 62 | |
877211f5 TI |
63 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
64 | struct snd_pcm_hw_params_old __user * _oparams); | |
65 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, | |
66 | struct snd_pcm_hw_params_old __user * _oparams); | |
59d48582 | 67 | #endif |
f87135f5 | 68 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream); |
1da177e4 LT |
69 | |
70 | /* | |
71 | * | |
72 | */ | |
73 | ||
74 | DEFINE_RWLOCK(snd_pcm_link_rwlock); | |
e88e8ae6 | 75 | EXPORT_SYMBOL(snd_pcm_link_rwlock); |
1da177e4 | 76 | |
e88e8ae6 | 77 | static DECLARE_RWSEM(snd_pcm_link_rwsem); |
1da177e4 LT |
78 | |
79 | static inline mm_segment_t snd_enter_user(void) | |
80 | { | |
81 | mm_segment_t fs = get_fs(); | |
82 | set_fs(get_ds()); | |
83 | return fs; | |
84 | } | |
85 | ||
86 | static inline void snd_leave_user(mm_segment_t fs) | |
87 | { | |
88 | set_fs(fs); | |
89 | } | |
90 | ||
91 | ||
92 | ||
877211f5 | 93 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) |
1da177e4 | 94 | { |
877211f5 TI |
95 | struct snd_pcm_runtime *runtime; |
96 | struct snd_pcm *pcm = substream->pcm; | |
97 | struct snd_pcm_str *pstr = substream->pstr; | |
1da177e4 LT |
98 | |
99 | snd_assert(substream != NULL, return -ENXIO); | |
100 | memset(info, 0, sizeof(*info)); | |
101 | info->card = pcm->card->number; | |
102 | info->device = pcm->device; | |
103 | info->stream = substream->stream; | |
104 | info->subdevice = substream->number; | |
105 | strlcpy(info->id, pcm->id, sizeof(info->id)); | |
106 | strlcpy(info->name, pcm->name, sizeof(info->name)); | |
107 | info->dev_class = pcm->dev_class; | |
108 | info->dev_subclass = pcm->dev_subclass; | |
109 | info->subdevices_count = pstr->substream_count; | |
110 | info->subdevices_avail = pstr->substream_count - pstr->substream_opened; | |
111 | strlcpy(info->subname, substream->name, sizeof(info->subname)); | |
112 | runtime = substream->runtime; | |
113 | /* AB: FIXME!!! This is definitely nonsense */ | |
114 | if (runtime) { | |
115 | info->sync = runtime->sync; | |
116 | substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info); | |
117 | } | |
118 | return 0; | |
119 | } | |
120 | ||
877211f5 TI |
121 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
122 | struct snd_pcm_info __user * _info) | |
1da177e4 | 123 | { |
877211f5 | 124 | struct snd_pcm_info *info; |
1da177e4 LT |
125 | int err; |
126 | ||
127 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
128 | if (! info) | |
129 | return -ENOMEM; | |
130 | err = snd_pcm_info(substream, info); | |
131 | if (err >= 0) { | |
132 | if (copy_to_user(_info, info, sizeof(*info))) | |
133 | err = -EFAULT; | |
134 | } | |
135 | kfree(info); | |
136 | return err; | |
137 | } | |
138 | ||
139 | #undef RULES_DEBUG | |
140 | ||
141 | #ifdef RULES_DEBUG | |
142 | #define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v | |
143 | char *snd_pcm_hw_param_names[] = { | |
144 | HW_PARAM(ACCESS), | |
145 | HW_PARAM(FORMAT), | |
146 | HW_PARAM(SUBFORMAT), | |
147 | HW_PARAM(SAMPLE_BITS), | |
148 | HW_PARAM(FRAME_BITS), | |
149 | HW_PARAM(CHANNELS), | |
150 | HW_PARAM(RATE), | |
151 | HW_PARAM(PERIOD_TIME), | |
152 | HW_PARAM(PERIOD_SIZE), | |
153 | HW_PARAM(PERIOD_BYTES), | |
154 | HW_PARAM(PERIODS), | |
155 | HW_PARAM(BUFFER_TIME), | |
156 | HW_PARAM(BUFFER_SIZE), | |
157 | HW_PARAM(BUFFER_BYTES), | |
158 | HW_PARAM(TICK_TIME), | |
159 | }; | |
160 | #endif | |
161 | ||
877211f5 TI |
162 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, |
163 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
164 | { |
165 | unsigned int k; | |
877211f5 TI |
166 | struct snd_pcm_hardware *hw; |
167 | struct snd_interval *i = NULL; | |
168 | struct snd_mask *m = NULL; | |
169 | struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; | |
1da177e4 LT |
170 | unsigned int rstamps[constrs->rules_num]; |
171 | unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; | |
172 | unsigned int stamp = 2; | |
173 | int changed, again; | |
174 | ||
175 | params->info = 0; | |
176 | params->fifo_size = 0; | |
177 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) | |
178 | params->msbits = 0; | |
179 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { | |
180 | params->rate_num = 0; | |
181 | params->rate_den = 0; | |
182 | } | |
183 | ||
184 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
185 | m = hw_param_mask(params, k); | |
186 | if (snd_mask_empty(m)) | |
187 | return -EINVAL; | |
188 | if (!(params->rmask & (1 << k))) | |
189 | continue; | |
190 | #ifdef RULES_DEBUG | |
191 | printk("%s = ", snd_pcm_hw_param_names[k]); | |
192 | printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
193 | #endif | |
194 | changed = snd_mask_refine(m, constrs_mask(constrs, k)); | |
195 | #ifdef RULES_DEBUG | |
196 | printk("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
197 | #endif | |
198 | if (changed) | |
199 | params->cmask |= 1 << k; | |
200 | if (changed < 0) | |
201 | return changed; | |
202 | } | |
203 | ||
204 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
205 | i = hw_param_interval(params, k); | |
206 | if (snd_interval_empty(i)) | |
207 | return -EINVAL; | |
208 | if (!(params->rmask & (1 << k))) | |
209 | continue; | |
210 | #ifdef RULES_DEBUG | |
211 | printk("%s = ", snd_pcm_hw_param_names[k]); | |
212 | if (i->empty) | |
213 | printk("empty"); | |
214 | else | |
215 | printk("%c%u %u%c", | |
216 | i->openmin ? '(' : '[', i->min, | |
217 | i->max, i->openmax ? ')' : ']'); | |
218 | printk(" -> "); | |
219 | #endif | |
220 | changed = snd_interval_refine(i, constrs_interval(constrs, k)); | |
221 | #ifdef RULES_DEBUG | |
222 | if (i->empty) | |
223 | printk("empty\n"); | |
224 | else | |
225 | printk("%c%u %u%c\n", | |
226 | i->openmin ? '(' : '[', i->min, | |
227 | i->max, i->openmax ? ')' : ']'); | |
228 | #endif | |
229 | if (changed) | |
230 | params->cmask |= 1 << k; | |
231 | if (changed < 0) | |
232 | return changed; | |
233 | } | |
234 | ||
235 | for (k = 0; k < constrs->rules_num; k++) | |
236 | rstamps[k] = 0; | |
237 | for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) | |
238 | vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0; | |
239 | do { | |
240 | again = 0; | |
241 | for (k = 0; k < constrs->rules_num; k++) { | |
877211f5 | 242 | struct snd_pcm_hw_rule *r = &constrs->rules[k]; |
1da177e4 LT |
243 | unsigned int d; |
244 | int doit = 0; | |
245 | if (r->cond && !(r->cond & params->flags)) | |
246 | continue; | |
247 | for (d = 0; r->deps[d] >= 0; d++) { | |
248 | if (vstamps[r->deps[d]] > rstamps[k]) { | |
249 | doit = 1; | |
250 | break; | |
251 | } | |
252 | } | |
253 | if (!doit) | |
254 | continue; | |
255 | #ifdef RULES_DEBUG | |
256 | printk("Rule %d [%p]: ", k, r->func); | |
257 | if (r->var >= 0) { | |
258 | printk("%s = ", snd_pcm_hw_param_names[r->var]); | |
259 | if (hw_is_mask(r->var)) { | |
260 | m = hw_param_mask(params, r->var); | |
261 | printk("%x", *m->bits); | |
262 | } else { | |
263 | i = hw_param_interval(params, r->var); | |
264 | if (i->empty) | |
265 | printk("empty"); | |
266 | else | |
267 | printk("%c%u %u%c", | |
268 | i->openmin ? '(' : '[', i->min, | |
269 | i->max, i->openmax ? ')' : ']'); | |
270 | } | |
271 | } | |
272 | #endif | |
273 | changed = r->func(params, r); | |
274 | #ifdef RULES_DEBUG | |
275 | if (r->var >= 0) { | |
276 | printk(" -> "); | |
277 | if (hw_is_mask(r->var)) | |
278 | printk("%x", *m->bits); | |
279 | else { | |
280 | if (i->empty) | |
281 | printk("empty"); | |
282 | else | |
283 | printk("%c%u %u%c", | |
284 | i->openmin ? '(' : '[', i->min, | |
285 | i->max, i->openmax ? ')' : ']'); | |
286 | } | |
287 | } | |
288 | printk("\n"); | |
289 | #endif | |
290 | rstamps[k] = stamp; | |
291 | if (changed && r->var >= 0) { | |
292 | params->cmask |= (1 << r->var); | |
293 | vstamps[r->var] = stamp; | |
294 | again = 1; | |
295 | } | |
296 | if (changed < 0) | |
297 | return changed; | |
298 | stamp++; | |
299 | } | |
300 | } while (again); | |
301 | if (!params->msbits) { | |
302 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); | |
303 | if (snd_interval_single(i)) | |
304 | params->msbits = snd_interval_value(i); | |
305 | } | |
306 | ||
307 | if (!params->rate_den) { | |
308 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
309 | if (snd_interval_single(i)) { | |
310 | params->rate_num = snd_interval_value(i); | |
311 | params->rate_den = 1; | |
312 | } | |
313 | } | |
314 | ||
315 | hw = &substream->runtime->hw; | |
316 | if (!params->info) | |
317 | params->info = hw->info; | |
318 | if (!params->fifo_size) | |
319 | params->fifo_size = hw->fifo_size; | |
320 | params->rmask = 0; | |
321 | return 0; | |
322 | } | |
323 | ||
e88e8ae6 TI |
324 | EXPORT_SYMBOL(snd_pcm_hw_refine); |
325 | ||
877211f5 TI |
326 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
327 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 328 | { |
877211f5 | 329 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
330 | int err; |
331 | ||
332 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
333 | if (!params) { | |
334 | err = -ENOMEM; | |
335 | goto out; | |
336 | } | |
337 | if (copy_from_user(params, _params, sizeof(*params))) { | |
338 | err = -EFAULT; | |
339 | goto out; | |
340 | } | |
341 | err = snd_pcm_hw_refine(substream, params); | |
342 | if (copy_to_user(_params, params, sizeof(*params))) { | |
343 | if (!err) | |
344 | err = -EFAULT; | |
345 | } | |
346 | out: | |
347 | kfree(params); | |
348 | return err; | |
349 | } | |
350 | ||
9442e691 TI |
351 | static int period_to_usecs(struct snd_pcm_runtime *runtime) |
352 | { | |
353 | int usecs; | |
354 | ||
355 | if (! runtime->rate) | |
356 | return -1; /* invalid */ | |
357 | ||
358 | /* take 75% of period time as the deadline */ | |
359 | usecs = (750000 / runtime->rate) * runtime->period_size; | |
360 | usecs += ((750000 % runtime->rate) * runtime->period_size) / | |
361 | runtime->rate; | |
362 | ||
363 | return usecs; | |
364 | } | |
365 | ||
877211f5 TI |
366 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
367 | struct snd_pcm_hw_params *params) | |
1da177e4 | 368 | { |
877211f5 | 369 | struct snd_pcm_runtime *runtime; |
9442e691 | 370 | int err, usecs; |
1da177e4 LT |
371 | unsigned int bits; |
372 | snd_pcm_uframes_t frames; | |
373 | ||
374 | snd_assert(substream != NULL, return -ENXIO); | |
375 | runtime = substream->runtime; | |
376 | snd_assert(runtime != NULL, return -ENXIO); | |
377 | snd_pcm_stream_lock_irq(substream); | |
378 | switch (runtime->status->state) { | |
379 | case SNDRV_PCM_STATE_OPEN: | |
380 | case SNDRV_PCM_STATE_SETUP: | |
381 | case SNDRV_PCM_STATE_PREPARED: | |
382 | break; | |
383 | default: | |
384 | snd_pcm_stream_unlock_irq(substream); | |
385 | return -EBADFD; | |
386 | } | |
387 | snd_pcm_stream_unlock_irq(substream); | |
388 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
389 | if (!substream->oss.oss) | |
390 | #endif | |
9c323fcb | 391 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
392 | return -EBADFD; |
393 | ||
394 | params->rmask = ~0U; | |
395 | err = snd_pcm_hw_refine(substream, params); | |
396 | if (err < 0) | |
397 | goto _error; | |
398 | ||
399 | err = snd_pcm_hw_params_choose(substream, params); | |
400 | if (err < 0) | |
401 | goto _error; | |
402 | ||
403 | if (substream->ops->hw_params != NULL) { | |
404 | err = substream->ops->hw_params(substream, params); | |
405 | if (err < 0) | |
406 | goto _error; | |
407 | } | |
408 | ||
409 | runtime->access = params_access(params); | |
410 | runtime->format = params_format(params); | |
411 | runtime->subformat = params_subformat(params); | |
412 | runtime->channels = params_channels(params); | |
413 | runtime->rate = params_rate(params); | |
414 | runtime->period_size = params_period_size(params); | |
415 | runtime->periods = params_periods(params); | |
416 | runtime->buffer_size = params_buffer_size(params); | |
417 | runtime->tick_time = params_tick_time(params); | |
418 | runtime->info = params->info; | |
419 | runtime->rate_num = params->rate_num; | |
420 | runtime->rate_den = params->rate_den; | |
421 | ||
422 | bits = snd_pcm_format_physical_width(runtime->format); | |
423 | runtime->sample_bits = bits; | |
424 | bits *= runtime->channels; | |
425 | runtime->frame_bits = bits; | |
426 | frames = 1; | |
427 | while (bits % 8 != 0) { | |
428 | bits *= 2; | |
429 | frames *= 2; | |
430 | } | |
431 | runtime->byte_align = bits / 8; | |
432 | runtime->min_align = frames; | |
433 | ||
434 | /* Default sw params */ | |
435 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
436 | runtime->period_step = 1; | |
437 | runtime->sleep_min = 0; | |
438 | runtime->control->avail_min = runtime->period_size; | |
439 | runtime->xfer_align = runtime->period_size; | |
440 | runtime->start_threshold = 1; | |
441 | runtime->stop_threshold = runtime->buffer_size; | |
442 | runtime->silence_threshold = 0; | |
443 | runtime->silence_size = 0; | |
444 | runtime->boundary = runtime->buffer_size; | |
445 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) | |
446 | runtime->boundary *= 2; | |
447 | ||
448 | snd_pcm_timer_resolution_change(substream); | |
449 | runtime->status->state = SNDRV_PCM_STATE_SETUP; | |
9442e691 TI |
450 | |
451 | remove_acceptable_latency(substream->latency_id); | |
452 | if ((usecs = period_to_usecs(runtime)) >= 0) | |
453 | set_acceptable_latency(substream->latency_id, usecs); | |
1da177e4 LT |
454 | return 0; |
455 | _error: | |
456 | /* hardware might be unuseable from this time, | |
457 | so we force application to retry to set | |
458 | the correct hardware parameter settings */ | |
459 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
460 | if (substream->ops->hw_free != NULL) | |
461 | substream->ops->hw_free(substream); | |
462 | return err; | |
463 | } | |
464 | ||
877211f5 TI |
465 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
466 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 467 | { |
877211f5 | 468 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
469 | int err; |
470 | ||
471 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
472 | if (!params) { | |
473 | err = -ENOMEM; | |
474 | goto out; | |
475 | } | |
476 | if (copy_from_user(params, _params, sizeof(*params))) { | |
477 | err = -EFAULT; | |
478 | goto out; | |
479 | } | |
480 | err = snd_pcm_hw_params(substream, params); | |
481 | if (copy_to_user(_params, params, sizeof(*params))) { | |
482 | if (!err) | |
483 | err = -EFAULT; | |
484 | } | |
485 | out: | |
486 | kfree(params); | |
487 | return err; | |
488 | } | |
489 | ||
877211f5 | 490 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 491 | { |
877211f5 | 492 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
493 | int result = 0; |
494 | ||
495 | snd_assert(substream != NULL, return -ENXIO); | |
496 | runtime = substream->runtime; | |
497 | snd_assert(runtime != NULL, return -ENXIO); | |
498 | snd_pcm_stream_lock_irq(substream); | |
499 | switch (runtime->status->state) { | |
500 | case SNDRV_PCM_STATE_SETUP: | |
501 | case SNDRV_PCM_STATE_PREPARED: | |
502 | break; | |
503 | default: | |
504 | snd_pcm_stream_unlock_irq(substream); | |
505 | return -EBADFD; | |
506 | } | |
507 | snd_pcm_stream_unlock_irq(substream); | |
9c323fcb | 508 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
509 | return -EBADFD; |
510 | if (substream->ops->hw_free) | |
511 | result = substream->ops->hw_free(substream); | |
512 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
9442e691 | 513 | remove_acceptable_latency(substream->latency_id); |
1da177e4 LT |
514 | return result; |
515 | } | |
516 | ||
877211f5 TI |
517 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
518 | struct snd_pcm_sw_params *params) | |
1da177e4 | 519 | { |
877211f5 | 520 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
521 | |
522 | snd_assert(substream != NULL, return -ENXIO); | |
523 | runtime = substream->runtime; | |
524 | snd_assert(runtime != NULL, return -ENXIO); | |
525 | snd_pcm_stream_lock_irq(substream); | |
526 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
527 | snd_pcm_stream_unlock_irq(substream); | |
528 | return -EBADFD; | |
529 | } | |
530 | snd_pcm_stream_unlock_irq(substream); | |
531 | ||
532 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) | |
533 | return -EINVAL; | |
534 | if (params->avail_min == 0) | |
535 | return -EINVAL; | |
536 | if (params->xfer_align == 0 || | |
537 | params->xfer_align % runtime->min_align != 0) | |
538 | return -EINVAL; | |
539 | if (params->silence_size >= runtime->boundary) { | |
540 | if (params->silence_threshold != 0) | |
541 | return -EINVAL; | |
542 | } else { | |
543 | if (params->silence_size > params->silence_threshold) | |
544 | return -EINVAL; | |
545 | if (params->silence_threshold > runtime->buffer_size) | |
546 | return -EINVAL; | |
547 | } | |
548 | snd_pcm_stream_lock_irq(substream); | |
549 | runtime->tstamp_mode = params->tstamp_mode; | |
550 | runtime->sleep_min = params->sleep_min; | |
551 | runtime->period_step = params->period_step; | |
552 | runtime->control->avail_min = params->avail_min; | |
553 | runtime->start_threshold = params->start_threshold; | |
554 | runtime->stop_threshold = params->stop_threshold; | |
555 | runtime->silence_threshold = params->silence_threshold; | |
556 | runtime->silence_size = params->silence_size; | |
557 | runtime->xfer_align = params->xfer_align; | |
558 | params->boundary = runtime->boundary; | |
559 | if (snd_pcm_running(substream)) { | |
560 | if (runtime->sleep_min) | |
561 | snd_pcm_tick_prepare(substream); | |
562 | else | |
563 | snd_pcm_tick_set(substream, 0); | |
564 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
565 | runtime->silence_size > 0) | |
566 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
567 | wake_up(&runtime->sleep); | |
568 | } | |
569 | snd_pcm_stream_unlock_irq(substream); | |
570 | return 0; | |
571 | } | |
572 | ||
877211f5 TI |
573 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
574 | struct snd_pcm_sw_params __user * _params) | |
1da177e4 | 575 | { |
877211f5 | 576 | struct snd_pcm_sw_params params; |
1da177e4 LT |
577 | int err; |
578 | if (copy_from_user(¶ms, _params, sizeof(params))) | |
579 | return -EFAULT; | |
580 | err = snd_pcm_sw_params(substream, ¶ms); | |
581 | if (copy_to_user(_params, ¶ms, sizeof(params))) | |
582 | return -EFAULT; | |
583 | return err; | |
584 | } | |
585 | ||
877211f5 TI |
586 | int snd_pcm_status(struct snd_pcm_substream *substream, |
587 | struct snd_pcm_status *status) | |
1da177e4 | 588 | { |
877211f5 | 589 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
590 | |
591 | snd_pcm_stream_lock_irq(substream); | |
592 | status->state = runtime->status->state; | |
593 | status->suspended_state = runtime->status->suspended_state; | |
594 | if (status->state == SNDRV_PCM_STATE_OPEN) | |
595 | goto _end; | |
596 | status->trigger_tstamp = runtime->trigger_tstamp; | |
597 | if (snd_pcm_running(substream)) { | |
598 | snd_pcm_update_hw_ptr(substream); | |
599 | if (runtime->tstamp_mode & SNDRV_PCM_TSTAMP_MMAP) | |
600 | status->tstamp = runtime->status->tstamp; | |
601 | else | |
07799e75 | 602 | getnstimeofday(&status->tstamp); |
1da177e4 | 603 | } else |
07799e75 | 604 | getnstimeofday(&status->tstamp); |
1da177e4 LT |
605 | status->appl_ptr = runtime->control->appl_ptr; |
606 | status->hw_ptr = runtime->status->hw_ptr; | |
607 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
608 | status->avail = snd_pcm_playback_avail(runtime); | |
609 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
610 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
611 | status->delay = runtime->buffer_size - status->avail; | |
612 | else | |
613 | status->delay = 0; | |
614 | } else { | |
615 | status->avail = snd_pcm_capture_avail(runtime); | |
616 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) | |
617 | status->delay = status->avail; | |
618 | else | |
619 | status->delay = 0; | |
620 | } | |
621 | status->avail_max = runtime->avail_max; | |
622 | status->overrange = runtime->overrange; | |
623 | runtime->avail_max = 0; | |
624 | runtime->overrange = 0; | |
625 | _end: | |
626 | snd_pcm_stream_unlock_irq(substream); | |
627 | return 0; | |
628 | } | |
629 | ||
877211f5 TI |
630 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
631 | struct snd_pcm_status __user * _status) | |
1da177e4 | 632 | { |
877211f5 TI |
633 | struct snd_pcm_status status; |
634 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
635 | int res; |
636 | ||
637 | snd_assert(substream != NULL, return -ENXIO); | |
638 | runtime = substream->runtime; | |
639 | memset(&status, 0, sizeof(status)); | |
640 | res = snd_pcm_status(substream, &status); | |
641 | if (res < 0) | |
642 | return res; | |
643 | if (copy_to_user(_status, &status, sizeof(status))) | |
644 | return -EFAULT; | |
645 | return 0; | |
646 | } | |
647 | ||
877211f5 TI |
648 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
649 | struct snd_pcm_channel_info * info) | |
1da177e4 | 650 | { |
877211f5 | 651 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
652 | unsigned int channel; |
653 | ||
654 | snd_assert(substream != NULL, return -ENXIO); | |
655 | channel = info->channel; | |
656 | runtime = substream->runtime; | |
657 | snd_pcm_stream_lock_irq(substream); | |
658 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
659 | snd_pcm_stream_unlock_irq(substream); | |
660 | return -EBADFD; | |
661 | } | |
662 | snd_pcm_stream_unlock_irq(substream); | |
663 | if (channel >= runtime->channels) | |
664 | return -EINVAL; | |
665 | memset(info, 0, sizeof(*info)); | |
666 | info->channel = channel; | |
667 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); | |
668 | } | |
669 | ||
877211f5 TI |
670 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
671 | struct snd_pcm_channel_info __user * _info) | |
1da177e4 | 672 | { |
877211f5 | 673 | struct snd_pcm_channel_info info; |
1da177e4 LT |
674 | int res; |
675 | ||
676 | if (copy_from_user(&info, _info, sizeof(info))) | |
677 | return -EFAULT; | |
678 | res = snd_pcm_channel_info(substream, &info); | |
679 | if (res < 0) | |
680 | return res; | |
681 | if (copy_to_user(_info, &info, sizeof(info))) | |
682 | return -EFAULT; | |
683 | return 0; | |
684 | } | |
685 | ||
877211f5 | 686 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
1da177e4 | 687 | { |
877211f5 | 688 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
689 | if (runtime->trigger_master == NULL) |
690 | return; | |
691 | if (runtime->trigger_master == substream) { | |
07799e75 | 692 | getnstimeofday(&runtime->trigger_tstamp); |
1da177e4 LT |
693 | } else { |
694 | snd_pcm_trigger_tstamp(runtime->trigger_master); | |
695 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; | |
696 | } | |
697 | runtime->trigger_master = NULL; | |
698 | } | |
699 | ||
700 | struct action_ops { | |
877211f5 TI |
701 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
702 | int (*do_action)(struct snd_pcm_substream *substream, int state); | |
703 | void (*undo_action)(struct snd_pcm_substream *substream, int state); | |
704 | void (*post_action)(struct snd_pcm_substream *substream, int state); | |
1da177e4 LT |
705 | }; |
706 | ||
707 | /* | |
708 | * this functions is core for handling of linked stream | |
709 | * Note: the stream state might be changed also on failure | |
710 | * Note2: call with calling stream lock + link lock | |
711 | */ | |
712 | static int snd_pcm_action_group(struct action_ops *ops, | |
877211f5 | 713 | struct snd_pcm_substream *substream, |
1da177e4 LT |
714 | int state, int do_lock) |
715 | { | |
716 | struct list_head *pos; | |
877211f5 TI |
717 | struct snd_pcm_substream *s = NULL; |
718 | struct snd_pcm_substream *s1; | |
1da177e4 LT |
719 | int res = 0; |
720 | ||
721 | snd_pcm_group_for_each(pos, substream) { | |
722 | s = snd_pcm_group_substream_entry(pos); | |
723 | if (do_lock && s != substream) | |
724 | spin_lock(&s->self_group.lock); | |
725 | res = ops->pre_action(s, state); | |
726 | if (res < 0) | |
727 | goto _unlock; | |
728 | } | |
729 | snd_pcm_group_for_each(pos, substream) { | |
730 | s = snd_pcm_group_substream_entry(pos); | |
731 | res = ops->do_action(s, state); | |
732 | if (res < 0) { | |
733 | if (ops->undo_action) { | |
734 | snd_pcm_group_for_each(pos, substream) { | |
735 | s1 = snd_pcm_group_substream_entry(pos); | |
736 | if (s1 == s) /* failed stream */ | |
737 | break; | |
738 | ops->undo_action(s1, state); | |
739 | } | |
740 | } | |
741 | s = NULL; /* unlock all */ | |
742 | goto _unlock; | |
743 | } | |
744 | } | |
745 | snd_pcm_group_for_each(pos, substream) { | |
746 | s = snd_pcm_group_substream_entry(pos); | |
747 | ops->post_action(s, state); | |
748 | } | |
749 | _unlock: | |
750 | if (do_lock) { | |
751 | /* unlock streams */ | |
752 | snd_pcm_group_for_each(pos, substream) { | |
753 | s1 = snd_pcm_group_substream_entry(pos); | |
754 | if (s1 != substream) | |
755 | spin_unlock(&s1->self_group.lock); | |
756 | if (s1 == s) /* end */ | |
757 | break; | |
758 | } | |
759 | } | |
760 | return res; | |
761 | } | |
762 | ||
763 | /* | |
764 | * Note: call with stream lock | |
765 | */ | |
766 | static int snd_pcm_action_single(struct action_ops *ops, | |
877211f5 | 767 | struct snd_pcm_substream *substream, |
1da177e4 LT |
768 | int state) |
769 | { | |
770 | int res; | |
771 | ||
772 | res = ops->pre_action(substream, state); | |
773 | if (res < 0) | |
774 | return res; | |
775 | res = ops->do_action(substream, state); | |
776 | if (res == 0) | |
777 | ops->post_action(substream, state); | |
778 | else if (ops->undo_action) | |
779 | ops->undo_action(substream, state); | |
780 | return res; | |
781 | } | |
782 | ||
783 | /* | |
784 | * Note: call with stream lock | |
785 | */ | |
786 | static int snd_pcm_action(struct action_ops *ops, | |
877211f5 | 787 | struct snd_pcm_substream *substream, |
1da177e4 LT |
788 | int state) |
789 | { | |
790 | int res; | |
791 | ||
792 | if (snd_pcm_stream_linked(substream)) { | |
793 | if (!spin_trylock(&substream->group->lock)) { | |
794 | spin_unlock(&substream->self_group.lock); | |
795 | spin_lock(&substream->group->lock); | |
796 | spin_lock(&substream->self_group.lock); | |
797 | } | |
798 | res = snd_pcm_action_group(ops, substream, state, 1); | |
799 | spin_unlock(&substream->group->lock); | |
800 | } else { | |
801 | res = snd_pcm_action_single(ops, substream, state); | |
802 | } | |
803 | return res; | |
804 | } | |
805 | ||
806 | /* | |
807 | * Note: don't use any locks before | |
808 | */ | |
809 | static int snd_pcm_action_lock_irq(struct action_ops *ops, | |
877211f5 | 810 | struct snd_pcm_substream *substream, |
1da177e4 LT |
811 | int state) |
812 | { | |
813 | int res; | |
814 | ||
815 | read_lock_irq(&snd_pcm_link_rwlock); | |
816 | if (snd_pcm_stream_linked(substream)) { | |
817 | spin_lock(&substream->group->lock); | |
818 | spin_lock(&substream->self_group.lock); | |
819 | res = snd_pcm_action_group(ops, substream, state, 1); | |
820 | spin_unlock(&substream->self_group.lock); | |
821 | spin_unlock(&substream->group->lock); | |
822 | } else { | |
823 | spin_lock(&substream->self_group.lock); | |
824 | res = snd_pcm_action_single(ops, substream, state); | |
825 | spin_unlock(&substream->self_group.lock); | |
826 | } | |
827 | read_unlock_irq(&snd_pcm_link_rwlock); | |
828 | return res; | |
829 | } | |
830 | ||
831 | /* | |
832 | */ | |
833 | static int snd_pcm_action_nonatomic(struct action_ops *ops, | |
877211f5 | 834 | struct snd_pcm_substream *substream, |
1da177e4 LT |
835 | int state) |
836 | { | |
837 | int res; | |
838 | ||
839 | down_read(&snd_pcm_link_rwsem); | |
840 | if (snd_pcm_stream_linked(substream)) | |
841 | res = snd_pcm_action_group(ops, substream, state, 0); | |
842 | else | |
843 | res = snd_pcm_action_single(ops, substream, state); | |
844 | up_read(&snd_pcm_link_rwsem); | |
845 | return res; | |
846 | } | |
847 | ||
848 | /* | |
849 | * start callbacks | |
850 | */ | |
877211f5 | 851 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 852 | { |
877211f5 | 853 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
854 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
855 | return -EBADFD; | |
856 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
857 | !snd_pcm_playback_data(substream)) | |
858 | return -EPIPE; | |
859 | runtime->trigger_master = substream; | |
860 | return 0; | |
861 | } | |
862 | ||
877211f5 | 863 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
864 | { |
865 | if (substream->runtime->trigger_master != substream) | |
866 | return 0; | |
867 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); | |
868 | } | |
869 | ||
877211f5 | 870 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
871 | { |
872 | if (substream->runtime->trigger_master == substream) | |
873 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
874 | } | |
875 | ||
877211f5 | 876 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 877 | { |
877211f5 | 878 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
879 | snd_pcm_trigger_tstamp(substream); |
880 | runtime->status->state = state; | |
881 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
882 | runtime->silence_size > 0) | |
883 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
884 | if (runtime->sleep_min) | |
885 | snd_pcm_tick_prepare(substream); | |
886 | if (substream->timer) | |
877211f5 TI |
887 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
888 | &runtime->trigger_tstamp); | |
1da177e4 LT |
889 | } |
890 | ||
891 | static struct action_ops snd_pcm_action_start = { | |
892 | .pre_action = snd_pcm_pre_start, | |
893 | .do_action = snd_pcm_do_start, | |
894 | .undo_action = snd_pcm_undo_start, | |
895 | .post_action = snd_pcm_post_start | |
896 | }; | |
897 | ||
898 | /** | |
899 | * snd_pcm_start | |
df8db936 | 900 | * @substream: the PCM substream instance |
1da177e4 LT |
901 | * |
902 | * Start all linked streams. | |
903 | */ | |
877211f5 | 904 | int snd_pcm_start(struct snd_pcm_substream *substream) |
1da177e4 | 905 | { |
877211f5 TI |
906 | return snd_pcm_action(&snd_pcm_action_start, substream, |
907 | SNDRV_PCM_STATE_RUNNING); | |
1da177e4 LT |
908 | } |
909 | ||
910 | /* | |
911 | * stop callbacks | |
912 | */ | |
877211f5 | 913 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 914 | { |
877211f5 | 915 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
916 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
917 | return -EBADFD; | |
918 | runtime->trigger_master = substream; | |
919 | return 0; | |
920 | } | |
921 | ||
877211f5 | 922 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
923 | { |
924 | if (substream->runtime->trigger_master == substream && | |
925 | snd_pcm_running(substream)) | |
926 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
927 | return 0; /* unconditonally stop all substreams */ | |
928 | } | |
929 | ||
877211f5 | 930 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 931 | { |
877211f5 | 932 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
933 | if (runtime->status->state != state) { |
934 | snd_pcm_trigger_tstamp(substream); | |
935 | if (substream->timer) | |
877211f5 TI |
936 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
937 | &runtime->trigger_tstamp); | |
1da177e4 LT |
938 | runtime->status->state = state; |
939 | snd_pcm_tick_set(substream, 0); | |
940 | } | |
941 | wake_up(&runtime->sleep); | |
942 | } | |
943 | ||
944 | static struct action_ops snd_pcm_action_stop = { | |
945 | .pre_action = snd_pcm_pre_stop, | |
946 | .do_action = snd_pcm_do_stop, | |
947 | .post_action = snd_pcm_post_stop | |
948 | }; | |
949 | ||
950 | /** | |
951 | * snd_pcm_stop | |
df8db936 TI |
952 | * @substream: the PCM substream instance |
953 | * @state: PCM state after stopping the stream | |
1da177e4 LT |
954 | * |
955 | * Try to stop all running streams in the substream group. | |
956 | * The state of each stream is changed to the given value after that unconditionally. | |
957 | */ | |
877211f5 | 958 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
959 | { |
960 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); | |
961 | } | |
962 | ||
e88e8ae6 TI |
963 | EXPORT_SYMBOL(snd_pcm_stop); |
964 | ||
1da177e4 LT |
965 | /** |
966 | * snd_pcm_drain_done | |
df8db936 | 967 | * @substream: the PCM substream |
1da177e4 LT |
968 | * |
969 | * Stop the DMA only when the given stream is playback. | |
970 | * The state is changed to SETUP. | |
971 | * Unlike snd_pcm_stop(), this affects only the given stream. | |
972 | */ | |
877211f5 | 973 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
1da177e4 | 974 | { |
877211f5 TI |
975 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
976 | SNDRV_PCM_STATE_SETUP); | |
1da177e4 LT |
977 | } |
978 | ||
979 | /* | |
980 | * pause callbacks | |
981 | */ | |
877211f5 | 982 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 983 | { |
877211f5 | 984 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
985 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
986 | return -ENOSYS; | |
987 | if (push) { | |
988 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) | |
989 | return -EBADFD; | |
990 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) | |
991 | return -EBADFD; | |
992 | runtime->trigger_master = substream; | |
993 | return 0; | |
994 | } | |
995 | ||
877211f5 | 996 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
997 | { |
998 | if (substream->runtime->trigger_master != substream) | |
999 | return 0; | |
1000 | return substream->ops->trigger(substream, | |
1001 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : | |
1002 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
1003 | } | |
1004 | ||
877211f5 | 1005 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1006 | { |
1007 | if (substream->runtime->trigger_master == substream) | |
1008 | substream->ops->trigger(substream, | |
1009 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : | |
1010 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
1011 | } | |
1012 | ||
877211f5 | 1013 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 1014 | { |
877211f5 | 1015 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1016 | snd_pcm_trigger_tstamp(substream); |
1017 | if (push) { | |
1018 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; | |
1019 | if (substream->timer) | |
877211f5 TI |
1020 | snd_timer_notify(substream->timer, |
1021 | SNDRV_TIMER_EVENT_MPAUSE, | |
1022 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1023 | snd_pcm_tick_set(substream, 0); |
1024 | wake_up(&runtime->sleep); | |
1025 | } else { | |
1026 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; | |
1027 | if (runtime->sleep_min) | |
1028 | snd_pcm_tick_prepare(substream); | |
1029 | if (substream->timer) | |
877211f5 TI |
1030 | snd_timer_notify(substream->timer, |
1031 | SNDRV_TIMER_EVENT_MCONTINUE, | |
1032 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1033 | } |
1034 | } | |
1035 | ||
1036 | static struct action_ops snd_pcm_action_pause = { | |
1037 | .pre_action = snd_pcm_pre_pause, | |
1038 | .do_action = snd_pcm_do_pause, | |
1039 | .undo_action = snd_pcm_undo_pause, | |
1040 | .post_action = snd_pcm_post_pause | |
1041 | }; | |
1042 | ||
1043 | /* | |
1044 | * Push/release the pause for all linked streams. | |
1045 | */ | |
877211f5 | 1046 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1047 | { |
1048 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); | |
1049 | } | |
1050 | ||
1051 | #ifdef CONFIG_PM | |
1052 | /* suspend */ | |
1053 | ||
877211f5 | 1054 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1055 | { |
877211f5 | 1056 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1057 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
1058 | return -EBUSY; | |
1059 | runtime->trigger_master = substream; | |
1060 | return 0; | |
1061 | } | |
1062 | ||
877211f5 | 1063 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1064 | { |
877211f5 | 1065 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1066 | if (runtime->trigger_master != substream) |
1067 | return 0; | |
1068 | if (! snd_pcm_running(substream)) | |
1069 | return 0; | |
1070 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1071 | return 0; /* suspend unconditionally */ | |
1072 | } | |
1073 | ||
877211f5 | 1074 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1075 | { |
877211f5 | 1076 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1077 | snd_pcm_trigger_tstamp(substream); |
1078 | if (substream->timer) | |
877211f5 TI |
1079 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
1080 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1081 | runtime->status->suspended_state = runtime->status->state; |
1082 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; | |
1083 | snd_pcm_tick_set(substream, 0); | |
1084 | wake_up(&runtime->sleep); | |
1085 | } | |
1086 | ||
1087 | static struct action_ops snd_pcm_action_suspend = { | |
1088 | .pre_action = snd_pcm_pre_suspend, | |
1089 | .do_action = snd_pcm_do_suspend, | |
1090 | .post_action = snd_pcm_post_suspend | |
1091 | }; | |
1092 | ||
1093 | /** | |
1094 | * snd_pcm_suspend | |
df8db936 | 1095 | * @substream: the PCM substream |
1da177e4 LT |
1096 | * |
1097 | * Trigger SUSPEND to all linked streams. | |
1098 | * After this call, all streams are changed to SUSPENDED state. | |
1099 | */ | |
877211f5 | 1100 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
1da177e4 LT |
1101 | { |
1102 | int err; | |
1103 | unsigned long flags; | |
1104 | ||
603bf524 TI |
1105 | if (! substream) |
1106 | return 0; | |
1107 | ||
1da177e4 LT |
1108 | snd_pcm_stream_lock_irqsave(substream, flags); |
1109 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); | |
1110 | snd_pcm_stream_unlock_irqrestore(substream, flags); | |
1111 | return err; | |
1112 | } | |
1113 | ||
e88e8ae6 TI |
1114 | EXPORT_SYMBOL(snd_pcm_suspend); |
1115 | ||
1da177e4 LT |
1116 | /** |
1117 | * snd_pcm_suspend_all | |
df8db936 | 1118 | * @pcm: the PCM instance |
1da177e4 LT |
1119 | * |
1120 | * Trigger SUSPEND to all substreams in the given pcm. | |
1121 | * After this call, all streams are changed to SUSPENDED state. | |
1122 | */ | |
877211f5 | 1123 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
1da177e4 | 1124 | { |
877211f5 | 1125 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1126 | int stream, err = 0; |
1127 | ||
603bf524 TI |
1128 | if (! pcm) |
1129 | return 0; | |
1130 | ||
1da177e4 | 1131 | for (stream = 0; stream < 2; stream++) { |
877211f5 TI |
1132 | for (substream = pcm->streams[stream].substream; |
1133 | substream; substream = substream->next) { | |
1da177e4 LT |
1134 | /* FIXME: the open/close code should lock this as well */ |
1135 | if (substream->runtime == NULL) | |
1136 | continue; | |
1137 | err = snd_pcm_suspend(substream); | |
1138 | if (err < 0 && err != -EBUSY) | |
1139 | return err; | |
1140 | } | |
1141 | } | |
1142 | return 0; | |
1143 | } | |
1144 | ||
e88e8ae6 TI |
1145 | EXPORT_SYMBOL(snd_pcm_suspend_all); |
1146 | ||
1da177e4 LT |
1147 | /* resume */ |
1148 | ||
877211f5 | 1149 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1150 | { |
877211f5 | 1151 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1152 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
1153 | return -ENOSYS; | |
1154 | runtime->trigger_master = substream; | |
1155 | return 0; | |
1156 | } | |
1157 | ||
877211f5 | 1158 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1159 | { |
877211f5 | 1160 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1161 | if (runtime->trigger_master != substream) |
1162 | return 0; | |
1163 | /* DMA not running previously? */ | |
1164 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && | |
1165 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || | |
1166 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
1167 | return 0; | |
1168 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); | |
1169 | } | |
1170 | ||
877211f5 | 1171 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1172 | { |
1173 | if (substream->runtime->trigger_master == substream && | |
1174 | snd_pcm_running(substream)) | |
1175 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1176 | } | |
1177 | ||
877211f5 | 1178 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1179 | { |
877211f5 | 1180 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1181 | snd_pcm_trigger_tstamp(substream); |
1182 | if (substream->timer) | |
877211f5 TI |
1183 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
1184 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1185 | runtime->status->state = runtime->status->suspended_state; |
1186 | if (runtime->sleep_min) | |
1187 | snd_pcm_tick_prepare(substream); | |
1188 | } | |
1189 | ||
1190 | static struct action_ops snd_pcm_action_resume = { | |
1191 | .pre_action = snd_pcm_pre_resume, | |
1192 | .do_action = snd_pcm_do_resume, | |
1193 | .undo_action = snd_pcm_undo_resume, | |
1194 | .post_action = snd_pcm_post_resume | |
1195 | }; | |
1196 | ||
877211f5 | 1197 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 | 1198 | { |
877211f5 | 1199 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1200 | int res; |
1201 | ||
1202 | snd_power_lock(card); | |
cbac4b0c | 1203 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
1da177e4 LT |
1204 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
1205 | snd_power_unlock(card); | |
1206 | return res; | |
1207 | } | |
1208 | ||
1209 | #else | |
1210 | ||
877211f5 | 1211 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 LT |
1212 | { |
1213 | return -ENOSYS; | |
1214 | } | |
1215 | ||
1216 | #endif /* CONFIG_PM */ | |
1217 | ||
1218 | /* | |
1219 | * xrun ioctl | |
1220 | * | |
1221 | * Change the RUNNING stream(s) to XRUN state. | |
1222 | */ | |
877211f5 | 1223 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
1da177e4 | 1224 | { |
877211f5 TI |
1225 | struct snd_card *card = substream->pcm->card; |
1226 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
1227 | int result; |
1228 | ||
1229 | snd_power_lock(card); | |
1230 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1231 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1232 | if (result < 0) |
1233 | goto _unlock; | |
1234 | } | |
1235 | ||
1236 | snd_pcm_stream_lock_irq(substream); | |
1237 | switch (runtime->status->state) { | |
1238 | case SNDRV_PCM_STATE_XRUN: | |
1239 | result = 0; /* already there */ | |
1240 | break; | |
1241 | case SNDRV_PCM_STATE_RUNNING: | |
1242 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
1243 | break; | |
1244 | default: | |
1245 | result = -EBADFD; | |
1246 | } | |
1247 | snd_pcm_stream_unlock_irq(substream); | |
1248 | _unlock: | |
1249 | snd_power_unlock(card); | |
1250 | return result; | |
1251 | } | |
1252 | ||
1253 | /* | |
1254 | * reset ioctl | |
1255 | */ | |
877211f5 | 1256 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1257 | { |
877211f5 | 1258 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1259 | switch (runtime->status->state) { |
1260 | case SNDRV_PCM_STATE_RUNNING: | |
1261 | case SNDRV_PCM_STATE_PREPARED: | |
1262 | case SNDRV_PCM_STATE_PAUSED: | |
1263 | case SNDRV_PCM_STATE_SUSPENDED: | |
1264 | return 0; | |
1265 | default: | |
1266 | return -EBADFD; | |
1267 | } | |
1268 | } | |
1269 | ||
877211f5 | 1270 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1271 | { |
877211f5 | 1272 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1273 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
1274 | if (err < 0) | |
1275 | return err; | |
1276 | // snd_assert(runtime->status->hw_ptr < runtime->buffer_size, ); | |
1277 | runtime->hw_ptr_base = 0; | |
877211f5 TI |
1278 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
1279 | runtime->status->hw_ptr % runtime->period_size; | |
1da177e4 LT |
1280 | runtime->silence_start = runtime->status->hw_ptr; |
1281 | runtime->silence_filled = 0; | |
1282 | return 0; | |
1283 | } | |
1284 | ||
877211f5 | 1285 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1286 | { |
877211f5 | 1287 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1288 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1289 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
1290 | runtime->silence_size > 0) | |
1291 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1292 | } | |
1293 | ||
1294 | static struct action_ops snd_pcm_action_reset = { | |
1295 | .pre_action = snd_pcm_pre_reset, | |
1296 | .do_action = snd_pcm_do_reset, | |
1297 | .post_action = snd_pcm_post_reset | |
1298 | }; | |
1299 | ||
877211f5 | 1300 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
1da177e4 LT |
1301 | { |
1302 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); | |
1303 | } | |
1304 | ||
1305 | /* | |
1306 | * prepare ioctl | |
1307 | */ | |
0df63e44 TI |
1308 | /* we use the second argument for updating f_flags */ |
1309 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, | |
1310 | int f_flags) | |
1da177e4 | 1311 | { |
877211f5 | 1312 | struct snd_pcm_runtime *runtime = substream->runtime; |
de1b8b93 TI |
1313 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1314 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1315 | return -EBADFD; |
1316 | if (snd_pcm_running(substream)) | |
1317 | return -EBUSY; | |
0df63e44 | 1318 | substream->f_flags = f_flags; |
1da177e4 LT |
1319 | return 0; |
1320 | } | |
1321 | ||
877211f5 | 1322 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1323 | { |
1324 | int err; | |
1325 | err = substream->ops->prepare(substream); | |
1326 | if (err < 0) | |
1327 | return err; | |
1328 | return snd_pcm_do_reset(substream, 0); | |
1329 | } | |
1330 | ||
877211f5 | 1331 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1332 | { |
877211f5 | 1333 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1334 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1335 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; | |
1336 | } | |
1337 | ||
1338 | static struct action_ops snd_pcm_action_prepare = { | |
1339 | .pre_action = snd_pcm_pre_prepare, | |
1340 | .do_action = snd_pcm_do_prepare, | |
1341 | .post_action = snd_pcm_post_prepare | |
1342 | }; | |
1343 | ||
1344 | /** | |
1345 | * snd_pcm_prepare | |
df8db936 | 1346 | * @substream: the PCM substream instance |
0df63e44 | 1347 | * @file: file to refer f_flags |
df8db936 TI |
1348 | * |
1349 | * Prepare the PCM substream to be triggerable. | |
1da177e4 | 1350 | */ |
0df63e44 TI |
1351 | static int snd_pcm_prepare(struct snd_pcm_substream *substream, |
1352 | struct file *file) | |
1da177e4 LT |
1353 | { |
1354 | int res; | |
877211f5 | 1355 | struct snd_card *card = substream->pcm->card; |
0df63e44 TI |
1356 | int f_flags; |
1357 | ||
1358 | if (file) | |
1359 | f_flags = file->f_flags; | |
1360 | else | |
1361 | f_flags = substream->f_flags; | |
1da177e4 LT |
1362 | |
1363 | snd_power_lock(card); | |
cbac4b0c | 1364 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
0df63e44 TI |
1365 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, |
1366 | substream, f_flags); | |
1da177e4 LT |
1367 | snd_power_unlock(card); |
1368 | return res; | |
1369 | } | |
1370 | ||
1371 | /* | |
1372 | * drain ioctl | |
1373 | */ | |
1374 | ||
877211f5 | 1375 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1376 | { |
0df63e44 | 1377 | if (substream->f_flags & O_NONBLOCK) |
1da177e4 LT |
1378 | return -EAGAIN; |
1379 | substream->runtime->trigger_master = substream; | |
1380 | return 0; | |
1381 | } | |
1382 | ||
877211f5 | 1383 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1384 | { |
877211f5 | 1385 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1386 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1387 | switch (runtime->status->state) { | |
1388 | case SNDRV_PCM_STATE_PREPARED: | |
1389 | /* start playback stream if possible */ | |
1390 | if (! snd_pcm_playback_empty(substream)) { | |
1391 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1392 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1393 | } | |
1394 | break; | |
1395 | case SNDRV_PCM_STATE_RUNNING: | |
1396 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; | |
1397 | break; | |
1398 | default: | |
1399 | break; | |
1400 | } | |
1401 | } else { | |
1402 | /* stop running stream */ | |
1403 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { | |
1404 | int state = snd_pcm_capture_avail(runtime) > 0 ? | |
1405 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; | |
1406 | snd_pcm_do_stop(substream, state); | |
1407 | snd_pcm_post_stop(substream, state); | |
1408 | } | |
1409 | } | |
1410 | return 0; | |
1411 | } | |
1412 | ||
877211f5 | 1413 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1414 | { |
1415 | } | |
1416 | ||
1417 | static struct action_ops snd_pcm_action_drain_init = { | |
1418 | .pre_action = snd_pcm_pre_drain_init, | |
1419 | .do_action = snd_pcm_do_drain_init, | |
1420 | .post_action = snd_pcm_post_drain_init | |
1421 | }; | |
1422 | ||
1423 | struct drain_rec { | |
877211f5 | 1424 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1425 | wait_queue_t wait; |
1426 | snd_pcm_uframes_t stop_threshold; | |
1427 | }; | |
1428 | ||
877211f5 | 1429 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
1da177e4 LT |
1430 | |
1431 | /* | |
1432 | * Drain the stream(s). | |
1433 | * When the substream is linked, sync until the draining of all playback streams | |
1434 | * is finished. | |
1435 | * After this call, all streams are supposed to be either SETUP or DRAINING | |
1436 | * (capture only) state. | |
1437 | */ | |
877211f5 | 1438 | static int snd_pcm_drain(struct snd_pcm_substream *substream) |
1da177e4 | 1439 | { |
877211f5 TI |
1440 | struct snd_card *card; |
1441 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1442 | struct list_head *pos; |
1443 | int result = 0; | |
1444 | int i, num_drecs; | |
1445 | struct drain_rec *drec, drec_tmp, *d; | |
1446 | ||
1447 | snd_assert(substream != NULL, return -ENXIO); | |
1448 | card = substream->pcm->card; | |
1449 | runtime = substream->runtime; | |
1450 | ||
1451 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1452 | return -EBADFD; | |
1453 | ||
1da177e4 LT |
1454 | snd_power_lock(card); |
1455 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1456 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
21cb2a2e TI |
1457 | if (result < 0) { |
1458 | snd_power_unlock(card); | |
1459 | return result; | |
1460 | } | |
1da177e4 LT |
1461 | } |
1462 | ||
1463 | /* allocate temporary record for drain sync */ | |
21cb2a2e | 1464 | down_read(&snd_pcm_link_rwsem); |
1da177e4 LT |
1465 | if (snd_pcm_stream_linked(substream)) { |
1466 | drec = kmalloc(substream->group->count * sizeof(*drec), GFP_KERNEL); | |
1467 | if (! drec) { | |
21cb2a2e TI |
1468 | up_read(&snd_pcm_link_rwsem); |
1469 | snd_power_unlock(card); | |
1470 | return -ENOMEM; | |
1da177e4 LT |
1471 | } |
1472 | } else | |
1473 | drec = &drec_tmp; | |
1474 | ||
21cb2a2e | 1475 | /* count only playback streams */ |
1da177e4 LT |
1476 | num_drecs = 0; |
1477 | snd_pcm_group_for_each(pos, substream) { | |
877211f5 | 1478 | struct snd_pcm_substream *s = snd_pcm_group_substream_entry(pos); |
1da177e4 | 1479 | runtime = s->runtime; |
1da177e4 LT |
1480 | if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1481 | d = &drec[num_drecs++]; | |
1482 | d->substream = s; | |
1483 | init_waitqueue_entry(&d->wait, current); | |
1484 | add_wait_queue(&runtime->sleep, &d->wait); | |
1485 | /* stop_threshold fixup to avoid endless loop when | |
1486 | * stop_threshold > buffer_size | |
1487 | */ | |
1488 | d->stop_threshold = runtime->stop_threshold; | |
1489 | if (runtime->stop_threshold > runtime->buffer_size) | |
1490 | runtime->stop_threshold = runtime->buffer_size; | |
1491 | } | |
1492 | } | |
21cb2a2e | 1493 | up_read(&snd_pcm_link_rwsem); |
21cb2a2e TI |
1494 | |
1495 | snd_pcm_stream_lock_irq(substream); | |
1496 | /* resume pause */ | |
1497 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1498 | snd_pcm_pause(substream, 0); | |
1499 | ||
1500 | /* pre-start/stop - all running streams are changed to DRAINING state */ | |
1501 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); | |
1502 | if (result < 0) { | |
1503 | snd_pcm_stream_unlock_irq(substream); | |
1504 | goto _error; | |
1505 | } | |
1da177e4 LT |
1506 | |
1507 | for (;;) { | |
1508 | long tout; | |
1509 | if (signal_pending(current)) { | |
1510 | result = -ERESTARTSYS; | |
1511 | break; | |
1512 | } | |
21cb2a2e TI |
1513 | /* all finished? */ |
1514 | for (i = 0; i < num_drecs; i++) { | |
1515 | runtime = drec[i].substream->runtime; | |
1516 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
1517 | break; | |
1518 | } | |
1519 | if (i == num_drecs) | |
1520 | break; /* yes, all drained */ | |
1521 | ||
1da177e4 LT |
1522 | set_current_state(TASK_INTERRUPTIBLE); |
1523 | snd_pcm_stream_unlock_irq(substream); | |
1524 | snd_power_unlock(card); | |
1525 | tout = schedule_timeout(10 * HZ); | |
1526 | snd_power_lock(card); | |
1527 | snd_pcm_stream_lock_irq(substream); | |
1528 | if (tout == 0) { | |
1529 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1530 | result = -ESTRPIPE; | |
1531 | else { | |
1532 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); | |
1533 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1534 | result = -EIO; | |
1535 | } | |
1536 | break; | |
1537 | } | |
1da177e4 | 1538 | } |
21cb2a2e TI |
1539 | |
1540 | snd_pcm_stream_unlock_irq(substream); | |
1541 | ||
1542 | _error: | |
1da177e4 LT |
1543 | for (i = 0; i < num_drecs; i++) { |
1544 | d = &drec[i]; | |
1545 | runtime = d->substream->runtime; | |
1546 | remove_wait_queue(&runtime->sleep, &d->wait); | |
1547 | runtime->stop_threshold = d->stop_threshold; | |
1548 | } | |
1549 | ||
1da177e4 LT |
1550 | if (drec != &drec_tmp) |
1551 | kfree(drec); | |
1da177e4 | 1552 | snd_power_unlock(card); |
1da177e4 LT |
1553 | |
1554 | return result; | |
1555 | } | |
1556 | ||
1557 | /* | |
1558 | * drop ioctl | |
1559 | * | |
1560 | * Immediately put all linked substreams into SETUP state. | |
1561 | */ | |
877211f5 | 1562 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
1da177e4 | 1563 | { |
877211f5 TI |
1564 | struct snd_pcm_runtime *runtime; |
1565 | struct snd_card *card; | |
1da177e4 LT |
1566 | int result = 0; |
1567 | ||
1568 | snd_assert(substream != NULL, return -ENXIO); | |
1569 | runtime = substream->runtime; | |
1570 | card = substream->pcm->card; | |
1571 | ||
de1b8b93 TI |
1572 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1573 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1574 | return -EBADFD; |
1575 | ||
1576 | snd_power_lock(card); | |
1577 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1578 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1579 | if (result < 0) |
1580 | goto _unlock; | |
1581 | } | |
1582 | ||
1583 | snd_pcm_stream_lock_irq(substream); | |
1584 | /* resume pause */ | |
1585 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1586 | snd_pcm_pause(substream, 0); | |
1587 | ||
1588 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1589 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ | |
1590 | snd_pcm_stream_unlock_irq(substream); | |
1591 | _unlock: | |
1592 | snd_power_unlock(card); | |
1593 | return result; | |
1594 | } | |
1595 | ||
1596 | ||
1597 | /* WARNING: Don't forget to fput back the file */ | |
1da177e4 LT |
1598 | static struct file *snd_pcm_file_fd(int fd) |
1599 | { | |
1600 | struct file *file; | |
1601 | struct inode *inode; | |
f87135f5 CL |
1602 | unsigned int minor; |
1603 | ||
1da177e4 LT |
1604 | file = fget(fd); |
1605 | if (!file) | |
1606 | return NULL; | |
1607 | inode = file->f_dentry->d_inode; | |
1608 | if (!S_ISCHR(inode->i_mode) || | |
1609 | imajor(inode) != snd_major) { | |
1610 | fput(file); | |
1611 | return NULL; | |
1612 | } | |
1613 | minor = iminor(inode); | |
f87135f5 CL |
1614 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
1615 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { | |
1da177e4 LT |
1616 | fput(file); |
1617 | return NULL; | |
1618 | } | |
1619 | return file; | |
1620 | } | |
1621 | ||
1622 | /* | |
1623 | * PCM link handling | |
1624 | */ | |
877211f5 | 1625 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
1da177e4 LT |
1626 | { |
1627 | int res = 0; | |
1628 | struct file *file; | |
877211f5 TI |
1629 | struct snd_pcm_file *pcm_file; |
1630 | struct snd_pcm_substream *substream1; | |
1da177e4 LT |
1631 | |
1632 | file = snd_pcm_file_fd(fd); | |
1633 | if (!file) | |
1634 | return -EBADFD; | |
1635 | pcm_file = file->private_data; | |
1636 | substream1 = pcm_file->substream; | |
1637 | down_write(&snd_pcm_link_rwsem); | |
1638 | write_lock_irq(&snd_pcm_link_rwlock); | |
1639 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || | |
1640 | substream->runtime->status->state != substream1->runtime->status->state) { | |
1641 | res = -EBADFD; | |
1642 | goto _end; | |
1643 | } | |
1644 | if (snd_pcm_stream_linked(substream1)) { | |
1645 | res = -EALREADY; | |
1646 | goto _end; | |
1647 | } | |
1648 | if (!snd_pcm_stream_linked(substream)) { | |
877211f5 | 1649 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
1da177e4 LT |
1650 | if (substream->group == NULL) { |
1651 | res = -ENOMEM; | |
1652 | goto _end; | |
1653 | } | |
1654 | spin_lock_init(&substream->group->lock); | |
1655 | INIT_LIST_HEAD(&substream->group->substreams); | |
1656 | list_add_tail(&substream->link_list, &substream->group->substreams); | |
1657 | substream->group->count = 1; | |
1658 | } | |
1659 | list_add_tail(&substream1->link_list, &substream->group->substreams); | |
1660 | substream->group->count++; | |
1661 | substream1->group = substream->group; | |
1662 | _end: | |
1663 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1664 | up_write(&snd_pcm_link_rwsem); | |
1665 | fput(file); | |
1666 | return res; | |
1667 | } | |
1668 | ||
877211f5 | 1669 | static void relink_to_local(struct snd_pcm_substream *substream) |
1da177e4 LT |
1670 | { |
1671 | substream->group = &substream->self_group; | |
1672 | INIT_LIST_HEAD(&substream->self_group.substreams); | |
1673 | list_add_tail(&substream->link_list, &substream->self_group.substreams); | |
1674 | } | |
1675 | ||
877211f5 | 1676 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
1da177e4 LT |
1677 | { |
1678 | struct list_head *pos; | |
1679 | int res = 0; | |
1680 | ||
1681 | down_write(&snd_pcm_link_rwsem); | |
1682 | write_lock_irq(&snd_pcm_link_rwlock); | |
1683 | if (!snd_pcm_stream_linked(substream)) { | |
1684 | res = -EALREADY; | |
1685 | goto _end; | |
1686 | } | |
1687 | list_del(&substream->link_list); | |
1688 | substream->group->count--; | |
1689 | if (substream->group->count == 1) { /* detach the last stream, too */ | |
1690 | snd_pcm_group_for_each(pos, substream) { | |
1691 | relink_to_local(snd_pcm_group_substream_entry(pos)); | |
1692 | break; | |
1693 | } | |
1694 | kfree(substream->group); | |
1695 | } | |
1696 | relink_to_local(substream); | |
1697 | _end: | |
1698 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1699 | up_write(&snd_pcm_link_rwsem); | |
1700 | return res; | |
1701 | } | |
1702 | ||
1703 | /* | |
1704 | * hw configurator | |
1705 | */ | |
877211f5 TI |
1706 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
1707 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1708 | { |
877211f5 | 1709 | struct snd_interval t; |
1da177e4 LT |
1710 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
1711 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1712 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1713 | } | |
1714 | ||
877211f5 TI |
1715 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
1716 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1717 | { |
877211f5 | 1718 | struct snd_interval t; |
1da177e4 LT |
1719 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
1720 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1721 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1722 | } | |
1723 | ||
877211f5 TI |
1724 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
1725 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1726 | { |
877211f5 | 1727 | struct snd_interval t; |
1da177e4 LT |
1728 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
1729 | hw_param_interval_c(params, rule->deps[1]), | |
1730 | (unsigned long) rule->private, &t); | |
1731 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1732 | } | |
1733 | ||
877211f5 TI |
1734 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
1735 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1736 | { |
877211f5 | 1737 | struct snd_interval t; |
1da177e4 LT |
1738 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
1739 | (unsigned long) rule->private, | |
1740 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1741 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1742 | } | |
1743 | ||
877211f5 TI |
1744 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
1745 | struct snd_pcm_hw_rule *rule) | |
1da177e4 LT |
1746 | { |
1747 | unsigned int k; | |
877211f5 TI |
1748 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
1749 | struct snd_mask m; | |
1750 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1751 | snd_mask_any(&m); |
1752 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1753 | int bits; | |
1754 | if (! snd_mask_test(mask, k)) | |
1755 | continue; | |
1756 | bits = snd_pcm_format_physical_width(k); | |
1757 | if (bits <= 0) | |
1758 | continue; /* ignore invalid formats */ | |
1759 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) | |
1760 | snd_mask_reset(&m, k); | |
1761 | } | |
1762 | return snd_mask_refine(mask, &m); | |
1763 | } | |
1764 | ||
877211f5 TI |
1765 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
1766 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1767 | { |
877211f5 | 1768 | struct snd_interval t; |
1da177e4 LT |
1769 | unsigned int k; |
1770 | t.min = UINT_MAX; | |
1771 | t.max = 0; | |
1772 | t.openmin = 0; | |
1773 | t.openmax = 0; | |
1774 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1775 | int bits; | |
1776 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) | |
1777 | continue; | |
1778 | bits = snd_pcm_format_physical_width(k); | |
1779 | if (bits <= 0) | |
1780 | continue; /* ignore invalid formats */ | |
1781 | if (t.min > (unsigned)bits) | |
1782 | t.min = bits; | |
1783 | if (t.max < (unsigned)bits) | |
1784 | t.max = bits; | |
1785 | } | |
1786 | t.integer = 1; | |
1787 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1788 | } | |
1789 | ||
1790 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 | |
1791 | #error "Change this table" | |
1792 | #endif | |
1793 | ||
1794 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
1795 | 48000, 64000, 88200, 96000, 176400, 192000 }; | |
1796 | ||
877211f5 TI |
1797 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
1798 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1799 | { |
877211f5 | 1800 | struct snd_pcm_hardware *hw = rule->private; |
1da177e4 LT |
1801 | return snd_interval_list(hw_param_interval(params, rule->var), |
1802 | ARRAY_SIZE(rates), rates, hw->rates); | |
1803 | } | |
1804 | ||
877211f5 TI |
1805 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
1806 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1807 | { |
877211f5 TI |
1808 | struct snd_interval t; |
1809 | struct snd_pcm_substream *substream = rule->private; | |
1da177e4 LT |
1810 | t.min = 0; |
1811 | t.max = substream->buffer_bytes_max; | |
1812 | t.openmin = 0; | |
1813 | t.openmax = 0; | |
1814 | t.integer = 1; | |
1815 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1816 | } | |
1817 | ||
877211f5 | 1818 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
1da177e4 | 1819 | { |
877211f5 TI |
1820 | struct snd_pcm_runtime *runtime = substream->runtime; |
1821 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; | |
1da177e4 LT |
1822 | int k, err; |
1823 | ||
1824 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
1825 | snd_mask_any(constrs_mask(constrs, k)); | |
1826 | } | |
1827 | ||
1828 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
1829 | snd_interval_any(constrs_interval(constrs, k)); | |
1830 | } | |
1831 | ||
1832 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); | |
1833 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); | |
1834 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); | |
1835 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); | |
1836 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); | |
1837 | ||
1838 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1839 | snd_pcm_hw_rule_format, NULL, | |
1840 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1841 | if (err < 0) | |
1842 | return err; | |
1843 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1844 | snd_pcm_hw_rule_sample_bits, NULL, | |
1845 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1846 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1847 | if (err < 0) | |
1848 | return err; | |
1849 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1850 | snd_pcm_hw_rule_div, NULL, | |
1851 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1852 | if (err < 0) | |
1853 | return err; | |
1854 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1855 | snd_pcm_hw_rule_mul, NULL, | |
1856 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1857 | if (err < 0) | |
1858 | return err; | |
1859 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1860 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1861 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1862 | if (err < 0) | |
1863 | return err; | |
1864 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1865 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1866 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
1867 | if (err < 0) | |
1868 | return err; | |
1869 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1870 | snd_pcm_hw_rule_div, NULL, | |
1871 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1872 | if (err < 0) | |
1873 | return err; | |
1874 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1875 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1876 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); | |
1877 | if (err < 0) | |
1878 | return err; | |
1879 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1880 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1881 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); | |
1882 | if (err < 0) | |
1883 | return err; | |
1884 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1885 | snd_pcm_hw_rule_div, NULL, | |
1886 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1887 | if (err < 0) | |
1888 | return err; | |
1889 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1890 | snd_pcm_hw_rule_div, NULL, | |
1891 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1892 | if (err < 0) | |
1893 | return err; | |
1894 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1895 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1896 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1897 | if (err < 0) | |
1898 | return err; | |
1899 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1900 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1901 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1902 | if (err < 0) | |
1903 | return err; | |
1904 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1905 | snd_pcm_hw_rule_mul, NULL, | |
1906 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1907 | if (err < 0) | |
1908 | return err; | |
1909 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1910 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1911 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1912 | if (err < 0) | |
1913 | return err; | |
1914 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1915 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1916 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1917 | if (err < 0) | |
1918 | return err; | |
1919 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1920 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1921 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1922 | if (err < 0) | |
1923 | return err; | |
1924 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1925 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1926 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1927 | if (err < 0) | |
1928 | return err; | |
1929 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1930 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1931 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1932 | if (err < 0) | |
1933 | return err; | |
1934 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, | |
1935 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1936 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1937 | if (err < 0) | |
1938 | return err; | |
1939 | return 0; | |
1940 | } | |
1941 | ||
877211f5 | 1942 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
1da177e4 | 1943 | { |
877211f5 TI |
1944 | struct snd_pcm_runtime *runtime = substream->runtime; |
1945 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1da177e4 LT |
1946 | int err; |
1947 | unsigned int mask = 0; | |
1948 | ||
1949 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1950 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; | |
1951 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1952 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; | |
1953 | if (hw->info & SNDRV_PCM_INFO_MMAP) { | |
1954 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1955 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
1956 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1957 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; | |
1958 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) | |
1959 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; | |
1960 | } | |
1961 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); | |
1962 | snd_assert(err >= 0, return -EINVAL); | |
1963 | ||
1964 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); | |
1965 | snd_assert(err >= 0, return -EINVAL); | |
1966 | ||
1967 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); | |
1968 | snd_assert(err >= 0, return -EINVAL); | |
1969 | ||
1970 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1971 | hw->channels_min, hw->channels_max); | |
1972 | snd_assert(err >= 0, return -EINVAL); | |
1973 | ||
1974 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, | |
1975 | hw->rate_min, hw->rate_max); | |
1976 | snd_assert(err >= 0, return -EINVAL); | |
1977 | ||
1978 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1979 | hw->period_bytes_min, hw->period_bytes_max); | |
1980 | snd_assert(err >= 0, return -EINVAL); | |
1981 | ||
1982 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, | |
1983 | hw->periods_min, hw->periods_max); | |
1984 | snd_assert(err >= 0, return -EINVAL); | |
1985 | ||
1986 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1987 | hw->period_bytes_min, hw->buffer_bytes_max); | |
1988 | snd_assert(err >= 0, return -EINVAL); | |
1989 | ||
1990 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1991 | snd_pcm_hw_rule_buffer_bytes_max, substream, | |
1992 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); | |
1993 | if (err < 0) | |
1994 | return err; | |
1995 | ||
1996 | /* FIXME: remove */ | |
1997 | if (runtime->dma_bytes) { | |
1998 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); | |
1999 | snd_assert(err >= 0, return -EINVAL); | |
2000 | } | |
2001 | ||
2002 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { | |
2003 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
2004 | snd_pcm_hw_rule_rate, hw, | |
2005 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
2006 | if (err < 0) | |
2007 | return err; | |
2008 | } | |
2009 | ||
2010 | /* FIXME: this belong to lowlevel */ | |
2011 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_TICK_TIME, | |
2012 | 1000000 / HZ, 1000000 / HZ); | |
2013 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); | |
2014 | ||
2015 | return 0; | |
2016 | } | |
2017 | ||
3bf75f9b | 2018 | static void pcm_release_private(struct snd_pcm_substream *substream) |
1da177e4 | 2019 | { |
1da177e4 | 2020 | snd_pcm_unlink(substream); |
3bf75f9b TI |
2021 | } |
2022 | ||
2023 | void snd_pcm_release_substream(struct snd_pcm_substream *substream) | |
2024 | { | |
0df63e44 TI |
2025 | substream->ref_count--; |
2026 | if (substream->ref_count > 0) | |
2027 | return; | |
2028 | ||
3bf75f9b | 2029 | snd_pcm_drop(substream); |
3bf75f9b | 2030 | if (substream->hw_opened) { |
1da177e4 LT |
2031 | if (substream->ops->hw_free != NULL) |
2032 | substream->ops->hw_free(substream); | |
2033 | substream->ops->close(substream); | |
3bf75f9b | 2034 | substream->hw_opened = 0; |
1da177e4 | 2035 | } |
1576274d TI |
2036 | if (substream->pcm_release) { |
2037 | substream->pcm_release(substream); | |
2038 | substream->pcm_release = NULL; | |
2039 | } | |
3bf75f9b TI |
2040 | snd_pcm_detach_substream(substream); |
2041 | } | |
2042 | ||
e88e8ae6 TI |
2043 | EXPORT_SYMBOL(snd_pcm_release_substream); |
2044 | ||
3bf75f9b TI |
2045 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, |
2046 | struct file *file, | |
2047 | struct snd_pcm_substream **rsubstream) | |
2048 | { | |
2049 | struct snd_pcm_substream *substream; | |
2050 | int err; | |
2051 | ||
2052 | err = snd_pcm_attach_substream(pcm, stream, file, &substream); | |
2053 | if (err < 0) | |
2054 | return err; | |
0df63e44 TI |
2055 | if (substream->ref_count > 1) { |
2056 | *rsubstream = substream; | |
2057 | return 0; | |
2058 | } | |
2059 | ||
3bf75f9b TI |
2060 | err = snd_pcm_hw_constraints_init(substream); |
2061 | if (err < 0) { | |
2062 | snd_printd("snd_pcm_hw_constraints_init failed\n"); | |
2063 | goto error; | |
2064 | } | |
2065 | ||
2066 | if ((err = substream->ops->open(substream)) < 0) | |
2067 | goto error; | |
2068 | ||
2069 | substream->hw_opened = 1; | |
2070 | ||
2071 | err = snd_pcm_hw_constraints_complete(substream); | |
2072 | if (err < 0) { | |
2073 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); | |
2074 | goto error; | |
2075 | } | |
2076 | ||
2077 | *rsubstream = substream; | |
1da177e4 | 2078 | return 0; |
3bf75f9b TI |
2079 | |
2080 | error: | |
2081 | snd_pcm_release_substream(substream); | |
2082 | return err; | |
1da177e4 LT |
2083 | } |
2084 | ||
e88e8ae6 TI |
2085 | EXPORT_SYMBOL(snd_pcm_open_substream); |
2086 | ||
1da177e4 | 2087 | static int snd_pcm_open_file(struct file *file, |
877211f5 | 2088 | struct snd_pcm *pcm, |
1da177e4 | 2089 | int stream, |
877211f5 | 2090 | struct snd_pcm_file **rpcm_file) |
1da177e4 | 2091 | { |
877211f5 TI |
2092 | struct snd_pcm_file *pcm_file; |
2093 | struct snd_pcm_substream *substream; | |
2094 | struct snd_pcm_str *str; | |
3bf75f9b | 2095 | int err; |
1da177e4 LT |
2096 | |
2097 | snd_assert(rpcm_file != NULL, return -EINVAL); | |
2098 | *rpcm_file = NULL; | |
2099 | ||
3bf75f9b TI |
2100 | err = snd_pcm_open_substream(pcm, stream, file, &substream); |
2101 | if (err < 0) | |
2102 | return err; | |
2103 | ||
548a648b TI |
2104 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
2105 | if (pcm_file == NULL) { | |
2106 | snd_pcm_release_substream(substream); | |
2107 | return -ENOMEM; | |
2108 | } | |
2109 | pcm_file->substream = substream; | |
2110 | if (substream->ref_count == 1) { | |
0df63e44 TI |
2111 | str = substream->pstr; |
2112 | substream->file = pcm_file; | |
2113 | substream->pcm_release = pcm_release_private; | |
1da177e4 | 2114 | } |
1da177e4 LT |
2115 | file->private_data = pcm_file; |
2116 | *rpcm_file = pcm_file; | |
2117 | return 0; | |
2118 | } | |
2119 | ||
f87135f5 CL |
2120 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
2121 | { | |
2122 | struct snd_pcm *pcm; | |
2123 | ||
2124 | pcm = snd_lookup_minor_data(iminor(inode), | |
2125 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); | |
2126 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); | |
2127 | } | |
2128 | ||
2129 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) | |
1da177e4 | 2130 | { |
877211f5 | 2131 | struct snd_pcm *pcm; |
f87135f5 CL |
2132 | |
2133 | pcm = snd_lookup_minor_data(iminor(inode), | |
2134 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); | |
2135 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); | |
2136 | } | |
2137 | ||
2138 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) | |
2139 | { | |
2140 | int err; | |
877211f5 | 2141 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2142 | wait_queue_t wait; |
2143 | ||
1da177e4 LT |
2144 | if (pcm == NULL) { |
2145 | err = -ENODEV; | |
2146 | goto __error1; | |
2147 | } | |
2148 | err = snd_card_file_add(pcm->card, file); | |
2149 | if (err < 0) | |
2150 | goto __error1; | |
2151 | if (!try_module_get(pcm->card->module)) { | |
2152 | err = -EFAULT; | |
2153 | goto __error2; | |
2154 | } | |
2155 | init_waitqueue_entry(&wait, current); | |
2156 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2157 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2158 | while (1) { |
f87135f5 | 2159 | err = snd_pcm_open_file(file, pcm, stream, &pcm_file); |
1da177e4 LT |
2160 | if (err >= 0) |
2161 | break; | |
2162 | if (err == -EAGAIN) { | |
2163 | if (file->f_flags & O_NONBLOCK) { | |
2164 | err = -EBUSY; | |
2165 | break; | |
2166 | } | |
2167 | } else | |
2168 | break; | |
2169 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2170 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2171 | schedule(); |
1a60d4c5 | 2172 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2173 | if (signal_pending(current)) { |
2174 | err = -ERESTARTSYS; | |
2175 | break; | |
2176 | } | |
2177 | } | |
2178 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2179 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2180 | if (err < 0) |
2181 | goto __error; | |
2182 | return err; | |
2183 | ||
2184 | __error: | |
2185 | module_put(pcm->card->module); | |
2186 | __error2: | |
2187 | snd_card_file_remove(pcm->card, file); | |
2188 | __error1: | |
2189 | return err; | |
2190 | } | |
2191 | ||
2192 | static int snd_pcm_release(struct inode *inode, struct file *file) | |
2193 | { | |
877211f5 TI |
2194 | struct snd_pcm *pcm; |
2195 | struct snd_pcm_substream *substream; | |
2196 | struct snd_pcm_file *pcm_file; | |
1da177e4 LT |
2197 | |
2198 | pcm_file = file->private_data; | |
2199 | substream = pcm_file->substream; | |
2200 | snd_assert(substream != NULL, return -ENXIO); | |
1da177e4 | 2201 | pcm = substream->pcm; |
1da177e4 | 2202 | fasync_helper(-1, file, 0, &substream->runtime->fasync); |
1a60d4c5 | 2203 | mutex_lock(&pcm->open_mutex); |
3bf75f9b | 2204 | snd_pcm_release_substream(substream); |
548a648b | 2205 | kfree(pcm_file); |
1a60d4c5 | 2206 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2207 | wake_up(&pcm->open_wait); |
2208 | module_put(pcm->card->module); | |
2209 | snd_card_file_remove(pcm->card, file); | |
2210 | return 0; | |
2211 | } | |
2212 | ||
877211f5 TI |
2213 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
2214 | snd_pcm_uframes_t frames) | |
1da177e4 | 2215 | { |
877211f5 | 2216 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2217 | snd_pcm_sframes_t appl_ptr; |
2218 | snd_pcm_sframes_t ret; | |
2219 | snd_pcm_sframes_t hw_avail; | |
2220 | ||
2221 | if (frames == 0) | |
2222 | return 0; | |
2223 | ||
2224 | snd_pcm_stream_lock_irq(substream); | |
2225 | switch (runtime->status->state) { | |
2226 | case SNDRV_PCM_STATE_PREPARED: | |
2227 | break; | |
2228 | case SNDRV_PCM_STATE_DRAINING: | |
2229 | case SNDRV_PCM_STATE_RUNNING: | |
2230 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2231 | break; | |
2232 | /* Fall through */ | |
2233 | case SNDRV_PCM_STATE_XRUN: | |
2234 | ret = -EPIPE; | |
2235 | goto __end; | |
2236 | default: | |
2237 | ret = -EBADFD; | |
2238 | goto __end; | |
2239 | } | |
2240 | ||
2241 | hw_avail = snd_pcm_playback_hw_avail(runtime); | |
2242 | if (hw_avail <= 0) { | |
2243 | ret = 0; | |
2244 | goto __end; | |
2245 | } | |
2246 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2247 | frames = hw_avail; | |
2248 | else | |
2249 | frames -= frames % runtime->xfer_align; | |
2250 | appl_ptr = runtime->control->appl_ptr - frames; | |
2251 | if (appl_ptr < 0) | |
2252 | appl_ptr += runtime->boundary; | |
2253 | runtime->control->appl_ptr = appl_ptr; | |
2254 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2255 | runtime->sleep_min) | |
2256 | snd_pcm_tick_prepare(substream); | |
2257 | ret = frames; | |
2258 | __end: | |
2259 | snd_pcm_stream_unlock_irq(substream); | |
2260 | return ret; | |
2261 | } | |
2262 | ||
877211f5 TI |
2263 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
2264 | snd_pcm_uframes_t frames) | |
1da177e4 | 2265 | { |
877211f5 | 2266 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2267 | snd_pcm_sframes_t appl_ptr; |
2268 | snd_pcm_sframes_t ret; | |
2269 | snd_pcm_sframes_t hw_avail; | |
2270 | ||
2271 | if (frames == 0) | |
2272 | return 0; | |
2273 | ||
2274 | snd_pcm_stream_lock_irq(substream); | |
2275 | switch (runtime->status->state) { | |
2276 | case SNDRV_PCM_STATE_PREPARED: | |
2277 | case SNDRV_PCM_STATE_DRAINING: | |
2278 | break; | |
2279 | case SNDRV_PCM_STATE_RUNNING: | |
2280 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2281 | break; | |
2282 | /* Fall through */ | |
2283 | case SNDRV_PCM_STATE_XRUN: | |
2284 | ret = -EPIPE; | |
2285 | goto __end; | |
2286 | default: | |
2287 | ret = -EBADFD; | |
2288 | goto __end; | |
2289 | } | |
2290 | ||
2291 | hw_avail = snd_pcm_capture_hw_avail(runtime); | |
2292 | if (hw_avail <= 0) { | |
2293 | ret = 0; | |
2294 | goto __end; | |
2295 | } | |
2296 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2297 | frames = hw_avail; | |
2298 | else | |
2299 | frames -= frames % runtime->xfer_align; | |
2300 | appl_ptr = runtime->control->appl_ptr - frames; | |
2301 | if (appl_ptr < 0) | |
2302 | appl_ptr += runtime->boundary; | |
2303 | runtime->control->appl_ptr = appl_ptr; | |
2304 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2305 | runtime->sleep_min) | |
2306 | snd_pcm_tick_prepare(substream); | |
2307 | ret = frames; | |
2308 | __end: | |
2309 | snd_pcm_stream_unlock_irq(substream); | |
2310 | return ret; | |
2311 | } | |
2312 | ||
877211f5 TI |
2313 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
2314 | snd_pcm_uframes_t frames) | |
1da177e4 | 2315 | { |
877211f5 | 2316 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2317 | snd_pcm_sframes_t appl_ptr; |
2318 | snd_pcm_sframes_t ret; | |
2319 | snd_pcm_sframes_t avail; | |
2320 | ||
2321 | if (frames == 0) | |
2322 | return 0; | |
2323 | ||
2324 | snd_pcm_stream_lock_irq(substream); | |
2325 | switch (runtime->status->state) { | |
2326 | case SNDRV_PCM_STATE_PREPARED: | |
2327 | case SNDRV_PCM_STATE_PAUSED: | |
2328 | break; | |
2329 | case SNDRV_PCM_STATE_DRAINING: | |
2330 | case SNDRV_PCM_STATE_RUNNING: | |
2331 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2332 | break; | |
2333 | /* Fall through */ | |
2334 | case SNDRV_PCM_STATE_XRUN: | |
2335 | ret = -EPIPE; | |
2336 | goto __end; | |
2337 | default: | |
2338 | ret = -EBADFD; | |
2339 | goto __end; | |
2340 | } | |
2341 | ||
2342 | avail = snd_pcm_playback_avail(runtime); | |
2343 | if (avail <= 0) { | |
2344 | ret = 0; | |
2345 | goto __end; | |
2346 | } | |
2347 | if (frames > (snd_pcm_uframes_t)avail) | |
2348 | frames = avail; | |
2349 | else | |
2350 | frames -= frames % runtime->xfer_align; | |
2351 | appl_ptr = runtime->control->appl_ptr + frames; | |
2352 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2353 | appl_ptr -= runtime->boundary; | |
2354 | runtime->control->appl_ptr = appl_ptr; | |
2355 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2356 | runtime->sleep_min) | |
2357 | snd_pcm_tick_prepare(substream); | |
2358 | ret = frames; | |
2359 | __end: | |
2360 | snd_pcm_stream_unlock_irq(substream); | |
2361 | return ret; | |
2362 | } | |
2363 | ||
877211f5 TI |
2364 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
2365 | snd_pcm_uframes_t frames) | |
1da177e4 | 2366 | { |
877211f5 | 2367 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2368 | snd_pcm_sframes_t appl_ptr; |
2369 | snd_pcm_sframes_t ret; | |
2370 | snd_pcm_sframes_t avail; | |
2371 | ||
2372 | if (frames == 0) | |
2373 | return 0; | |
2374 | ||
2375 | snd_pcm_stream_lock_irq(substream); | |
2376 | switch (runtime->status->state) { | |
2377 | case SNDRV_PCM_STATE_PREPARED: | |
2378 | case SNDRV_PCM_STATE_DRAINING: | |
2379 | case SNDRV_PCM_STATE_PAUSED: | |
2380 | break; | |
2381 | case SNDRV_PCM_STATE_RUNNING: | |
2382 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2383 | break; | |
2384 | /* Fall through */ | |
2385 | case SNDRV_PCM_STATE_XRUN: | |
2386 | ret = -EPIPE; | |
2387 | goto __end; | |
2388 | default: | |
2389 | ret = -EBADFD; | |
2390 | goto __end; | |
2391 | } | |
2392 | ||
2393 | avail = snd_pcm_capture_avail(runtime); | |
2394 | if (avail <= 0) { | |
2395 | ret = 0; | |
2396 | goto __end; | |
2397 | } | |
2398 | if (frames > (snd_pcm_uframes_t)avail) | |
2399 | frames = avail; | |
2400 | else | |
2401 | frames -= frames % runtime->xfer_align; | |
2402 | appl_ptr = runtime->control->appl_ptr + frames; | |
2403 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2404 | appl_ptr -= runtime->boundary; | |
2405 | runtime->control->appl_ptr = appl_ptr; | |
2406 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2407 | runtime->sleep_min) | |
2408 | snd_pcm_tick_prepare(substream); | |
2409 | ret = frames; | |
2410 | __end: | |
2411 | snd_pcm_stream_unlock_irq(substream); | |
2412 | return ret; | |
2413 | } | |
2414 | ||
877211f5 | 2415 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
1da177e4 | 2416 | { |
877211f5 | 2417 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2418 | int err; |
2419 | ||
2420 | snd_pcm_stream_lock_irq(substream); | |
2421 | switch (runtime->status->state) { | |
2422 | case SNDRV_PCM_STATE_DRAINING: | |
2423 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2424 | goto __badfd; | |
2425 | case SNDRV_PCM_STATE_RUNNING: | |
2426 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2427 | break; | |
2428 | /* Fall through */ | |
2429 | case SNDRV_PCM_STATE_PREPARED: | |
2430 | case SNDRV_PCM_STATE_SUSPENDED: | |
2431 | err = 0; | |
2432 | break; | |
2433 | case SNDRV_PCM_STATE_XRUN: | |
2434 | err = -EPIPE; | |
2435 | break; | |
2436 | default: | |
2437 | __badfd: | |
2438 | err = -EBADFD; | |
2439 | break; | |
2440 | } | |
2441 | snd_pcm_stream_unlock_irq(substream); | |
2442 | return err; | |
2443 | } | |
2444 | ||
877211f5 TI |
2445 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
2446 | snd_pcm_sframes_t __user *res) | |
1da177e4 | 2447 | { |
877211f5 | 2448 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2449 | int err; |
2450 | snd_pcm_sframes_t n = 0; | |
2451 | ||
2452 | snd_pcm_stream_lock_irq(substream); | |
2453 | switch (runtime->status->state) { | |
2454 | case SNDRV_PCM_STATE_DRAINING: | |
2455 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2456 | goto __badfd; | |
2457 | case SNDRV_PCM_STATE_RUNNING: | |
2458 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2459 | break; | |
2460 | /* Fall through */ | |
2461 | case SNDRV_PCM_STATE_PREPARED: | |
2462 | case SNDRV_PCM_STATE_SUSPENDED: | |
2463 | err = 0; | |
2464 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2465 | n = snd_pcm_playback_hw_avail(runtime); | |
2466 | else | |
2467 | n = snd_pcm_capture_avail(runtime); | |
2468 | break; | |
2469 | case SNDRV_PCM_STATE_XRUN: | |
2470 | err = -EPIPE; | |
2471 | break; | |
2472 | default: | |
2473 | __badfd: | |
2474 | err = -EBADFD; | |
2475 | break; | |
2476 | } | |
2477 | snd_pcm_stream_unlock_irq(substream); | |
2478 | if (!err) | |
2479 | if (put_user(n, res)) | |
2480 | err = -EFAULT; | |
2481 | return err; | |
2482 | } | |
2483 | ||
877211f5 TI |
2484 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
2485 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
1da177e4 | 2486 | { |
877211f5 TI |
2487 | struct snd_pcm_runtime *runtime = substream->runtime; |
2488 | struct snd_pcm_sync_ptr sync_ptr; | |
2489 | volatile struct snd_pcm_mmap_status *status; | |
2490 | volatile struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
2491 | int err; |
2492 | ||
2493 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
2494 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
2495 | return -EFAULT; | |
877211f5 | 2496 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
2497 | return -EFAULT; |
2498 | status = runtime->status; | |
2499 | control = runtime->control; | |
2500 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
2501 | err = snd_pcm_hwsync(substream); | |
2502 | if (err < 0) | |
2503 | return err; | |
2504 | } | |
2505 | snd_pcm_stream_lock_irq(substream); | |
2506 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) | |
2507 | control->appl_ptr = sync_ptr.c.control.appl_ptr; | |
2508 | else | |
2509 | sync_ptr.c.control.appl_ptr = control->appl_ptr; | |
2510 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
2511 | control->avail_min = sync_ptr.c.control.avail_min; | |
2512 | else | |
2513 | sync_ptr.c.control.avail_min = control->avail_min; | |
2514 | sync_ptr.s.status.state = status->state; | |
2515 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
2516 | sync_ptr.s.status.tstamp = status->tstamp; | |
2517 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
2518 | snd_pcm_stream_unlock_irq(substream); | |
2519 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) | |
2520 | return -EFAULT; | |
2521 | return 0; | |
2522 | } | |
2523 | ||
0df63e44 TI |
2524 | static int snd_pcm_common_ioctl1(struct file *file, |
2525 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2526 | unsigned int cmd, void __user *arg) |
2527 | { | |
2528 | snd_assert(substream != NULL, return -ENXIO); | |
2529 | ||
2530 | switch (cmd) { | |
2531 | case SNDRV_PCM_IOCTL_PVERSION: | |
2532 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; | |
2533 | case SNDRV_PCM_IOCTL_INFO: | |
2534 | return snd_pcm_info_user(substream, arg); | |
07799e75 | 2535 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
1da177e4 | 2536 | return 0; |
1da177e4 LT |
2537 | case SNDRV_PCM_IOCTL_HW_REFINE: |
2538 | return snd_pcm_hw_refine_user(substream, arg); | |
2539 | case SNDRV_PCM_IOCTL_HW_PARAMS: | |
2540 | return snd_pcm_hw_params_user(substream, arg); | |
2541 | case SNDRV_PCM_IOCTL_HW_FREE: | |
2542 | return snd_pcm_hw_free(substream); | |
2543 | case SNDRV_PCM_IOCTL_SW_PARAMS: | |
2544 | return snd_pcm_sw_params_user(substream, arg); | |
2545 | case SNDRV_PCM_IOCTL_STATUS: | |
2546 | return snd_pcm_status_user(substream, arg); | |
2547 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: | |
2548 | return snd_pcm_channel_info_user(substream, arg); | |
2549 | case SNDRV_PCM_IOCTL_PREPARE: | |
0df63e44 | 2550 | return snd_pcm_prepare(substream, file); |
1da177e4 LT |
2551 | case SNDRV_PCM_IOCTL_RESET: |
2552 | return snd_pcm_reset(substream); | |
2553 | case SNDRV_PCM_IOCTL_START: | |
2554 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); | |
2555 | case SNDRV_PCM_IOCTL_LINK: | |
2556 | return snd_pcm_link(substream, (int)(unsigned long) arg); | |
2557 | case SNDRV_PCM_IOCTL_UNLINK: | |
2558 | return snd_pcm_unlink(substream); | |
2559 | case SNDRV_PCM_IOCTL_RESUME: | |
2560 | return snd_pcm_resume(substream); | |
2561 | case SNDRV_PCM_IOCTL_XRUN: | |
2562 | return snd_pcm_xrun(substream); | |
2563 | case SNDRV_PCM_IOCTL_HWSYNC: | |
2564 | return snd_pcm_hwsync(substream); | |
2565 | case SNDRV_PCM_IOCTL_DELAY: | |
2566 | return snd_pcm_delay(substream, arg); | |
2567 | case SNDRV_PCM_IOCTL_SYNC_PTR: | |
2568 | return snd_pcm_sync_ptr(substream, arg); | |
59d48582 | 2569 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
2570 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
2571 | return snd_pcm_hw_refine_old_user(substream, arg); | |
2572 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: | |
2573 | return snd_pcm_hw_params_old_user(substream, arg); | |
59d48582 | 2574 | #endif |
1da177e4 LT |
2575 | case SNDRV_PCM_IOCTL_DRAIN: |
2576 | return snd_pcm_drain(substream); | |
2577 | case SNDRV_PCM_IOCTL_DROP: | |
2578 | return snd_pcm_drop(substream); | |
e661d0dd TI |
2579 | case SNDRV_PCM_IOCTL_PAUSE: |
2580 | { | |
2581 | int res; | |
2582 | snd_pcm_stream_lock_irq(substream); | |
2583 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); | |
2584 | snd_pcm_stream_unlock_irq(substream); | |
2585 | return res; | |
2586 | } | |
1da177e4 LT |
2587 | } |
2588 | snd_printd("unknown ioctl = 0x%x\n", cmd); | |
2589 | return -ENOTTY; | |
2590 | } | |
2591 | ||
0df63e44 TI |
2592 | static int snd_pcm_playback_ioctl1(struct file *file, |
2593 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2594 | unsigned int cmd, void __user *arg) |
2595 | { | |
2596 | snd_assert(substream != NULL, return -ENXIO); | |
2597 | snd_assert(substream->stream == SNDRV_PCM_STREAM_PLAYBACK, return -EINVAL); | |
2598 | switch (cmd) { | |
2599 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: | |
2600 | { | |
877211f5 TI |
2601 | struct snd_xferi xferi; |
2602 | struct snd_xferi __user *_xferi = arg; | |
2603 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2604 | snd_pcm_sframes_t result; |
2605 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2606 | return -EBADFD; | |
2607 | if (put_user(0, &_xferi->result)) | |
2608 | return -EFAULT; | |
2609 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2610 | return -EFAULT; | |
2611 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); | |
2612 | __put_user(result, &_xferi->result); | |
2613 | return result < 0 ? result : 0; | |
2614 | } | |
2615 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: | |
2616 | { | |
877211f5 TI |
2617 | struct snd_xfern xfern; |
2618 | struct snd_xfern __user *_xfern = arg; | |
2619 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2620 | void __user **bufs; |
2621 | snd_pcm_sframes_t result; | |
2622 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2623 | return -EBADFD; | |
2624 | if (runtime->channels > 128) | |
2625 | return -EINVAL; | |
2626 | if (put_user(0, &_xfern->result)) | |
2627 | return -EFAULT; | |
2628 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2629 | return -EFAULT; | |
2630 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); | |
2631 | if (bufs == NULL) | |
2632 | return -ENOMEM; | |
2633 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { | |
2634 | kfree(bufs); | |
2635 | return -EFAULT; | |
2636 | } | |
2637 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); | |
2638 | kfree(bufs); | |
2639 | __put_user(result, &_xfern->result); | |
2640 | return result < 0 ? result : 0; | |
2641 | } | |
2642 | case SNDRV_PCM_IOCTL_REWIND: | |
2643 | { | |
2644 | snd_pcm_uframes_t frames; | |
2645 | snd_pcm_uframes_t __user *_frames = arg; | |
2646 | snd_pcm_sframes_t result; | |
2647 | if (get_user(frames, _frames)) | |
2648 | return -EFAULT; | |
2649 | if (put_user(0, _frames)) | |
2650 | return -EFAULT; | |
2651 | result = snd_pcm_playback_rewind(substream, frames); | |
2652 | __put_user(result, _frames); | |
2653 | return result < 0 ? result : 0; | |
2654 | } | |
2655 | case SNDRV_PCM_IOCTL_FORWARD: | |
2656 | { | |
2657 | snd_pcm_uframes_t frames; | |
2658 | snd_pcm_uframes_t __user *_frames = arg; | |
2659 | snd_pcm_sframes_t result; | |
2660 | if (get_user(frames, _frames)) | |
2661 | return -EFAULT; | |
2662 | if (put_user(0, _frames)) | |
2663 | return -EFAULT; | |
2664 | result = snd_pcm_playback_forward(substream, frames); | |
2665 | __put_user(result, _frames); | |
2666 | return result < 0 ? result : 0; | |
2667 | } | |
1da177e4 | 2668 | } |
0df63e44 | 2669 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2670 | } |
2671 | ||
0df63e44 TI |
2672 | static int snd_pcm_capture_ioctl1(struct file *file, |
2673 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2674 | unsigned int cmd, void __user *arg) |
2675 | { | |
2676 | snd_assert(substream != NULL, return -ENXIO); | |
2677 | snd_assert(substream->stream == SNDRV_PCM_STREAM_CAPTURE, return -EINVAL); | |
2678 | switch (cmd) { | |
2679 | case SNDRV_PCM_IOCTL_READI_FRAMES: | |
2680 | { | |
877211f5 TI |
2681 | struct snd_xferi xferi; |
2682 | struct snd_xferi __user *_xferi = arg; | |
2683 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2684 | snd_pcm_sframes_t result; |
2685 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2686 | return -EBADFD; | |
2687 | if (put_user(0, &_xferi->result)) | |
2688 | return -EFAULT; | |
2689 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2690 | return -EFAULT; | |
2691 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); | |
2692 | __put_user(result, &_xferi->result); | |
2693 | return result < 0 ? result : 0; | |
2694 | } | |
2695 | case SNDRV_PCM_IOCTL_READN_FRAMES: | |
2696 | { | |
877211f5 TI |
2697 | struct snd_xfern xfern; |
2698 | struct snd_xfern __user *_xfern = arg; | |
2699 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2700 | void *bufs; |
2701 | snd_pcm_sframes_t result; | |
2702 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2703 | return -EBADFD; | |
2704 | if (runtime->channels > 128) | |
2705 | return -EINVAL; | |
2706 | if (put_user(0, &_xfern->result)) | |
2707 | return -EFAULT; | |
2708 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2709 | return -EFAULT; | |
2710 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); | |
2711 | if (bufs == NULL) | |
2712 | return -ENOMEM; | |
2713 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { | |
2714 | kfree(bufs); | |
2715 | return -EFAULT; | |
2716 | } | |
2717 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); | |
2718 | kfree(bufs); | |
2719 | __put_user(result, &_xfern->result); | |
2720 | return result < 0 ? result : 0; | |
2721 | } | |
2722 | case SNDRV_PCM_IOCTL_REWIND: | |
2723 | { | |
2724 | snd_pcm_uframes_t frames; | |
2725 | snd_pcm_uframes_t __user *_frames = arg; | |
2726 | snd_pcm_sframes_t result; | |
2727 | if (get_user(frames, _frames)) | |
2728 | return -EFAULT; | |
2729 | if (put_user(0, _frames)) | |
2730 | return -EFAULT; | |
2731 | result = snd_pcm_capture_rewind(substream, frames); | |
2732 | __put_user(result, _frames); | |
2733 | return result < 0 ? result : 0; | |
2734 | } | |
2735 | case SNDRV_PCM_IOCTL_FORWARD: | |
2736 | { | |
2737 | snd_pcm_uframes_t frames; | |
2738 | snd_pcm_uframes_t __user *_frames = arg; | |
2739 | snd_pcm_sframes_t result; | |
2740 | if (get_user(frames, _frames)) | |
2741 | return -EFAULT; | |
2742 | if (put_user(0, _frames)) | |
2743 | return -EFAULT; | |
2744 | result = snd_pcm_capture_forward(substream, frames); | |
2745 | __put_user(result, _frames); | |
2746 | return result < 0 ? result : 0; | |
2747 | } | |
2748 | } | |
0df63e44 | 2749 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2750 | } |
2751 | ||
877211f5 TI |
2752 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
2753 | unsigned long arg) | |
1da177e4 | 2754 | { |
877211f5 | 2755 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2756 | |
2757 | pcm_file = file->private_data; | |
2758 | ||
2759 | if (((cmd >> 8) & 0xff) != 'A') | |
2760 | return -ENOTTY; | |
2761 | ||
0df63e44 TI |
2762 | return snd_pcm_playback_ioctl1(file, pcm_file->substream, cmd, |
2763 | (void __user *)arg); | |
1da177e4 LT |
2764 | } |
2765 | ||
877211f5 TI |
2766 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
2767 | unsigned long arg) | |
1da177e4 | 2768 | { |
877211f5 | 2769 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2770 | |
2771 | pcm_file = file->private_data; | |
2772 | ||
2773 | if (((cmd >> 8) & 0xff) != 'A') | |
2774 | return -ENOTTY; | |
2775 | ||
0df63e44 TI |
2776 | return snd_pcm_capture_ioctl1(file, pcm_file->substream, cmd, |
2777 | (void __user *)arg); | |
1da177e4 LT |
2778 | } |
2779 | ||
bf1bbb5a TI |
2780 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
2781 | unsigned int cmd, void *arg) | |
1da177e4 LT |
2782 | { |
2783 | mm_segment_t fs; | |
2784 | int result; | |
2785 | ||
2786 | fs = snd_enter_user(); | |
1da177e4 LT |
2787 | switch (substream->stream) { |
2788 | case SNDRV_PCM_STREAM_PLAYBACK: | |
0df63e44 TI |
2789 | result = snd_pcm_playback_ioctl1(NULL, substream, cmd, |
2790 | (void __user *)arg); | |
bf1bbb5a | 2791 | break; |
1da177e4 | 2792 | case SNDRV_PCM_STREAM_CAPTURE: |
0df63e44 TI |
2793 | result = snd_pcm_capture_ioctl1(NULL, substream, cmd, |
2794 | (void __user *)arg); | |
bf1bbb5a | 2795 | break; |
1da177e4 | 2796 | default: |
bf1bbb5a TI |
2797 | result = -EINVAL; |
2798 | break; | |
1da177e4 | 2799 | } |
bf1bbb5a TI |
2800 | snd_leave_user(fs); |
2801 | return result; | |
1da177e4 LT |
2802 | } |
2803 | ||
e88e8ae6 TI |
2804 | EXPORT_SYMBOL(snd_pcm_kernel_ioctl); |
2805 | ||
877211f5 TI |
2806 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
2807 | loff_t * offset) | |
1da177e4 | 2808 | { |
877211f5 TI |
2809 | struct snd_pcm_file *pcm_file; |
2810 | struct snd_pcm_substream *substream; | |
2811 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2812 | snd_pcm_sframes_t result; |
2813 | ||
2814 | pcm_file = file->private_data; | |
2815 | substream = pcm_file->substream; | |
2816 | snd_assert(substream != NULL, return -ENXIO); | |
2817 | runtime = substream->runtime; | |
2818 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2819 | return -EBADFD; | |
2820 | if (!frame_aligned(runtime, count)) | |
2821 | return -EINVAL; | |
2822 | count = bytes_to_frames(runtime, count); | |
2823 | result = snd_pcm_lib_read(substream, buf, count); | |
2824 | if (result > 0) | |
2825 | result = frames_to_bytes(runtime, result); | |
2826 | return result; | |
2827 | } | |
2828 | ||
877211f5 TI |
2829 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
2830 | size_t count, loff_t * offset) | |
1da177e4 | 2831 | { |
877211f5 TI |
2832 | struct snd_pcm_file *pcm_file; |
2833 | struct snd_pcm_substream *substream; | |
2834 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2835 | snd_pcm_sframes_t result; |
2836 | ||
2837 | pcm_file = file->private_data; | |
2838 | substream = pcm_file->substream; | |
2839 | snd_assert(substream != NULL, result = -ENXIO; goto end); | |
2840 | runtime = substream->runtime; | |
2841 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
2842 | result = -EBADFD; | |
2843 | goto end; | |
2844 | } | |
2845 | if (!frame_aligned(runtime, count)) { | |
2846 | result = -EINVAL; | |
2847 | goto end; | |
2848 | } | |
2849 | count = bytes_to_frames(runtime, count); | |
2850 | result = snd_pcm_lib_write(substream, buf, count); | |
2851 | if (result > 0) | |
2852 | result = frames_to_bytes(runtime, result); | |
2853 | end: | |
2854 | return result; | |
2855 | } | |
2856 | ||
ee0b3e67 BP |
2857 | static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov, |
2858 | unsigned long nr_segs, loff_t pos) | |
1da177e4 LT |
2859 | |
2860 | { | |
877211f5 TI |
2861 | struct snd_pcm_file *pcm_file; |
2862 | struct snd_pcm_substream *substream; | |
2863 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2864 | snd_pcm_sframes_t result; |
2865 | unsigned long i; | |
2866 | void __user **bufs; | |
2867 | snd_pcm_uframes_t frames; | |
2868 | ||
ee0b3e67 | 2869 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 LT |
2870 | substream = pcm_file->substream; |
2871 | snd_assert(substream != NULL, return -ENXIO); | |
2872 | runtime = substream->runtime; | |
2873 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2874 | return -EBADFD; | |
ee0b3e67 | 2875 | if (nr_segs > 1024 || nr_segs != runtime->channels) |
1da177e4 | 2876 | return -EINVAL; |
ee0b3e67 | 2877 | if (!frame_aligned(runtime, iov->iov_len)) |
1da177e4 | 2878 | return -EINVAL; |
ee0b3e67 BP |
2879 | frames = bytes_to_samples(runtime, iov->iov_len); |
2880 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2881 | if (bufs == NULL) |
2882 | return -ENOMEM; | |
ee0b3e67 BP |
2883 | for (i = 0; i < nr_segs; ++i) |
2884 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2885 | result = snd_pcm_lib_readv(substream, bufs, frames); |
2886 | if (result > 0) | |
2887 | result = frames_to_bytes(runtime, result); | |
2888 | kfree(bufs); | |
2889 | return result; | |
2890 | } | |
2891 | ||
ee0b3e67 BP |
2892 | static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov, |
2893 | unsigned long nr_segs, loff_t pos) | |
1da177e4 | 2894 | { |
877211f5 TI |
2895 | struct snd_pcm_file *pcm_file; |
2896 | struct snd_pcm_substream *substream; | |
2897 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2898 | snd_pcm_sframes_t result; |
2899 | unsigned long i; | |
2900 | void __user **bufs; | |
2901 | snd_pcm_uframes_t frames; | |
2902 | ||
ee0b3e67 | 2903 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 LT |
2904 | substream = pcm_file->substream; |
2905 | snd_assert(substream != NULL, result = -ENXIO; goto end); | |
2906 | runtime = substream->runtime; | |
2907 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
2908 | result = -EBADFD; | |
2909 | goto end; | |
2910 | } | |
ee0b3e67 BP |
2911 | if (nr_segs > 128 || nr_segs != runtime->channels || |
2912 | !frame_aligned(runtime, iov->iov_len)) { | |
1da177e4 LT |
2913 | result = -EINVAL; |
2914 | goto end; | |
2915 | } | |
ee0b3e67 BP |
2916 | frames = bytes_to_samples(runtime, iov->iov_len); |
2917 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2918 | if (bufs == NULL) |
2919 | return -ENOMEM; | |
ee0b3e67 BP |
2920 | for (i = 0; i < nr_segs; ++i) |
2921 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2922 | result = snd_pcm_lib_writev(substream, bufs, frames); |
2923 | if (result > 0) | |
2924 | result = frames_to_bytes(runtime, result); | |
2925 | kfree(bufs); | |
2926 | end: | |
2927 | return result; | |
2928 | } | |
2929 | ||
2930 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) | |
2931 | { | |
877211f5 TI |
2932 | struct snd_pcm_file *pcm_file; |
2933 | struct snd_pcm_substream *substream; | |
2934 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2935 | unsigned int mask; |
2936 | snd_pcm_uframes_t avail; | |
2937 | ||
2938 | pcm_file = file->private_data; | |
2939 | ||
2940 | substream = pcm_file->substream; | |
2941 | snd_assert(substream != NULL, return -ENXIO); | |
2942 | runtime = substream->runtime; | |
2943 | ||
2944 | poll_wait(file, &runtime->sleep, wait); | |
2945 | ||
2946 | snd_pcm_stream_lock_irq(substream); | |
2947 | avail = snd_pcm_playback_avail(runtime); | |
2948 | switch (runtime->status->state) { | |
2949 | case SNDRV_PCM_STATE_RUNNING: | |
2950 | case SNDRV_PCM_STATE_PREPARED: | |
2951 | case SNDRV_PCM_STATE_PAUSED: | |
2952 | if (avail >= runtime->control->avail_min) { | |
2953 | mask = POLLOUT | POLLWRNORM; | |
2954 | break; | |
2955 | } | |
2956 | /* Fall through */ | |
2957 | case SNDRV_PCM_STATE_DRAINING: | |
2958 | mask = 0; | |
2959 | break; | |
2960 | default: | |
2961 | mask = POLLOUT | POLLWRNORM | POLLERR; | |
2962 | break; | |
2963 | } | |
2964 | snd_pcm_stream_unlock_irq(substream); | |
2965 | return mask; | |
2966 | } | |
2967 | ||
2968 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) | |
2969 | { | |
877211f5 TI |
2970 | struct snd_pcm_file *pcm_file; |
2971 | struct snd_pcm_substream *substream; | |
2972 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2973 | unsigned int mask; |
2974 | snd_pcm_uframes_t avail; | |
2975 | ||
2976 | pcm_file = file->private_data; | |
2977 | ||
2978 | substream = pcm_file->substream; | |
2979 | snd_assert(substream != NULL, return -ENXIO); | |
2980 | runtime = substream->runtime; | |
2981 | ||
2982 | poll_wait(file, &runtime->sleep, wait); | |
2983 | ||
2984 | snd_pcm_stream_lock_irq(substream); | |
2985 | avail = snd_pcm_capture_avail(runtime); | |
2986 | switch (runtime->status->state) { | |
2987 | case SNDRV_PCM_STATE_RUNNING: | |
2988 | case SNDRV_PCM_STATE_PREPARED: | |
2989 | case SNDRV_PCM_STATE_PAUSED: | |
2990 | if (avail >= runtime->control->avail_min) { | |
2991 | mask = POLLIN | POLLRDNORM; | |
2992 | break; | |
2993 | } | |
2994 | mask = 0; | |
2995 | break; | |
2996 | case SNDRV_PCM_STATE_DRAINING: | |
2997 | if (avail > 0) { | |
2998 | mask = POLLIN | POLLRDNORM; | |
2999 | break; | |
3000 | } | |
3001 | /* Fall through */ | |
3002 | default: | |
3003 | mask = POLLIN | POLLRDNORM | POLLERR; | |
3004 | break; | |
3005 | } | |
3006 | snd_pcm_stream_unlock_irq(substream); | |
3007 | return mask; | |
3008 | } | |
3009 | ||
3010 | /* | |
3011 | * mmap support | |
3012 | */ | |
3013 | ||
3014 | /* | |
3015 | * Only on coherent architectures, we can mmap the status and the control records | |
3016 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... | |
3017 | */ | |
3018 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
3019 | /* | |
3020 | * mmap status record | |
3021 | */ | |
877211f5 TI |
3022 | static struct page * snd_pcm_mmap_status_nopage(struct vm_area_struct *area, |
3023 | unsigned long address, int *type) | |
1da177e4 | 3024 | { |
877211f5 TI |
3025 | struct snd_pcm_substream *substream = area->vm_private_data; |
3026 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3027 | struct page * page; |
3028 | ||
3029 | if (substream == NULL) | |
cd54e7e5 | 3030 | return NOPAGE_SIGBUS; |
1da177e4 LT |
3031 | runtime = substream->runtime; |
3032 | page = virt_to_page(runtime->status); | |
b5810039 | 3033 | get_page(page); |
1da177e4 LT |
3034 | if (type) |
3035 | *type = VM_FAULT_MINOR; | |
3036 | return page; | |
3037 | } | |
3038 | ||
3039 | static struct vm_operations_struct snd_pcm_vm_ops_status = | |
3040 | { | |
3041 | .nopage = snd_pcm_mmap_status_nopage, | |
3042 | }; | |
3043 | ||
877211f5 | 3044 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3045 | struct vm_area_struct *area) |
3046 | { | |
877211f5 | 3047 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3048 | long size; |
3049 | if (!(area->vm_flags & VM_READ)) | |
3050 | return -EINVAL; | |
3051 | runtime = substream->runtime; | |
3052 | snd_assert(runtime != NULL, return -EAGAIN); | |
3053 | size = area->vm_end - area->vm_start; | |
877211f5 | 3054 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
1da177e4 LT |
3055 | return -EINVAL; |
3056 | area->vm_ops = &snd_pcm_vm_ops_status; | |
3057 | area->vm_private_data = substream; | |
3058 | area->vm_flags |= VM_RESERVED; | |
3059 | return 0; | |
3060 | } | |
3061 | ||
3062 | /* | |
3063 | * mmap control record | |
3064 | */ | |
877211f5 TI |
3065 | static struct page * snd_pcm_mmap_control_nopage(struct vm_area_struct *area, |
3066 | unsigned long address, int *type) | |
1da177e4 | 3067 | { |
877211f5 TI |
3068 | struct snd_pcm_substream *substream = area->vm_private_data; |
3069 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3070 | struct page * page; |
3071 | ||
3072 | if (substream == NULL) | |
cd54e7e5 | 3073 | return NOPAGE_SIGBUS; |
1da177e4 LT |
3074 | runtime = substream->runtime; |
3075 | page = virt_to_page(runtime->control); | |
b5810039 | 3076 | get_page(page); |
1da177e4 LT |
3077 | if (type) |
3078 | *type = VM_FAULT_MINOR; | |
3079 | return page; | |
3080 | } | |
3081 | ||
3082 | static struct vm_operations_struct snd_pcm_vm_ops_control = | |
3083 | { | |
3084 | .nopage = snd_pcm_mmap_control_nopage, | |
3085 | }; | |
3086 | ||
877211f5 | 3087 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3088 | struct vm_area_struct *area) |
3089 | { | |
877211f5 | 3090 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3091 | long size; |
3092 | if (!(area->vm_flags & VM_READ)) | |
3093 | return -EINVAL; | |
3094 | runtime = substream->runtime; | |
3095 | snd_assert(runtime != NULL, return -EAGAIN); | |
3096 | size = area->vm_end - area->vm_start; | |
877211f5 | 3097 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
3098 | return -EINVAL; |
3099 | area->vm_ops = &snd_pcm_vm_ops_control; | |
3100 | area->vm_private_data = substream; | |
3101 | area->vm_flags |= VM_RESERVED; | |
3102 | return 0; | |
3103 | } | |
3104 | #else /* ! coherent mmap */ | |
3105 | /* | |
3106 | * don't support mmap for status and control records. | |
3107 | */ | |
877211f5 | 3108 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3109 | struct vm_area_struct *area) |
3110 | { | |
3111 | return -ENXIO; | |
3112 | } | |
877211f5 | 3113 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3114 | struct vm_area_struct *area) |
3115 | { | |
3116 | return -ENXIO; | |
3117 | } | |
3118 | #endif /* coherent mmap */ | |
3119 | ||
3120 | /* | |
3121 | * nopage callback for mmapping a RAM page | |
3122 | */ | |
877211f5 TI |
3123 | static struct page *snd_pcm_mmap_data_nopage(struct vm_area_struct *area, |
3124 | unsigned long address, int *type) | |
1da177e4 | 3125 | { |
877211f5 TI |
3126 | struct snd_pcm_substream *substream = area->vm_private_data; |
3127 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3128 | unsigned long offset; |
3129 | struct page * page; | |
3130 | void *vaddr; | |
3131 | size_t dma_bytes; | |
3132 | ||
3133 | if (substream == NULL) | |
cd54e7e5 | 3134 | return NOPAGE_SIGBUS; |
1da177e4 LT |
3135 | runtime = substream->runtime; |
3136 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3137 | offset += address - area->vm_start; | |
cd54e7e5 | 3138 | snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_SIGBUS); |
1da177e4 LT |
3139 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
3140 | if (offset > dma_bytes - PAGE_SIZE) | |
3141 | return NOPAGE_SIGBUS; | |
3142 | if (substream->ops->page) { | |
3143 | page = substream->ops->page(substream, offset); | |
3144 | if (! page) | |
cd54e7e5 | 3145 | return NOPAGE_OOM; /* XXX: is this really due to OOM? */ |
1da177e4 LT |
3146 | } else { |
3147 | vaddr = runtime->dma_area + offset; | |
3148 | page = virt_to_page(vaddr); | |
3149 | } | |
b5810039 | 3150 | get_page(page); |
1da177e4 LT |
3151 | if (type) |
3152 | *type = VM_FAULT_MINOR; | |
3153 | return page; | |
3154 | } | |
3155 | ||
3156 | static struct vm_operations_struct snd_pcm_vm_ops_data = | |
3157 | { | |
3158 | .open = snd_pcm_mmap_data_open, | |
3159 | .close = snd_pcm_mmap_data_close, | |
3160 | .nopage = snd_pcm_mmap_data_nopage, | |
3161 | }; | |
3162 | ||
3163 | /* | |
3164 | * mmap the DMA buffer on RAM | |
3165 | */ | |
877211f5 TI |
3166 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
3167 | struct vm_area_struct *area) | |
1da177e4 LT |
3168 | { |
3169 | area->vm_ops = &snd_pcm_vm_ops_data; | |
3170 | area->vm_private_data = substream; | |
3171 | area->vm_flags |= VM_RESERVED; | |
9c323fcb | 3172 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3173 | return 0; |
3174 | } | |
3175 | ||
3176 | /* | |
3177 | * mmap the DMA buffer on I/O memory area | |
3178 | */ | |
3179 | #if SNDRV_PCM_INFO_MMAP_IOMEM | |
3180 | static struct vm_operations_struct snd_pcm_vm_ops_data_mmio = | |
3181 | { | |
3182 | .open = snd_pcm_mmap_data_open, | |
3183 | .close = snd_pcm_mmap_data_close, | |
3184 | }; | |
3185 | ||
877211f5 TI |
3186 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
3187 | struct vm_area_struct *area) | |
1da177e4 LT |
3188 | { |
3189 | long size; | |
3190 | unsigned long offset; | |
3191 | ||
3192 | #ifdef pgprot_noncached | |
3193 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
3194 | #endif | |
3195 | area->vm_ops = &snd_pcm_vm_ops_data_mmio; | |
3196 | area->vm_private_data = substream; | |
3197 | area->vm_flags |= VM_IO; | |
3198 | size = area->vm_end - area->vm_start; | |
3199 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3200 | if (io_remap_pfn_range(area, area->vm_start, | |
3201 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, | |
3202 | size, area->vm_page_prot)) | |
3203 | return -EAGAIN; | |
9c323fcb | 3204 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3205 | return 0; |
3206 | } | |
e88e8ae6 TI |
3207 | |
3208 | EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); | |
1da177e4 LT |
3209 | #endif /* SNDRV_PCM_INFO_MMAP */ |
3210 | ||
3211 | /* | |
3212 | * mmap DMA buffer | |
3213 | */ | |
877211f5 | 3214 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3215 | struct vm_area_struct *area) |
3216 | { | |
877211f5 | 3217 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3218 | long size; |
3219 | unsigned long offset; | |
3220 | size_t dma_bytes; | |
3221 | ||
3222 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
3223 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) | |
3224 | return -EINVAL; | |
3225 | } else { | |
3226 | if (!(area->vm_flags & VM_READ)) | |
3227 | return -EINVAL; | |
3228 | } | |
3229 | runtime = substream->runtime; | |
3230 | snd_assert(runtime != NULL, return -EAGAIN); | |
3231 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
3232 | return -EBADFD; | |
3233 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) | |
3234 | return -ENXIO; | |
3235 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || | |
3236 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) | |
3237 | return -EINVAL; | |
3238 | size = area->vm_end - area->vm_start; | |
3239 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3240 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3241 | if ((size_t)size > dma_bytes) | |
3242 | return -EINVAL; | |
3243 | if (offset > dma_bytes - size) | |
3244 | return -EINVAL; | |
3245 | ||
3246 | if (substream->ops->mmap) | |
3247 | return substream->ops->mmap(substream, area); | |
3248 | else | |
3249 | return snd_pcm_default_mmap(substream, area); | |
3250 | } | |
3251 | ||
e88e8ae6 TI |
3252 | EXPORT_SYMBOL(snd_pcm_mmap_data); |
3253 | ||
1da177e4 LT |
3254 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
3255 | { | |
877211f5 TI |
3256 | struct snd_pcm_file * pcm_file; |
3257 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
3258 | unsigned long offset; |
3259 | ||
3260 | pcm_file = file->private_data; | |
3261 | substream = pcm_file->substream; | |
3262 | snd_assert(substream != NULL, return -ENXIO); | |
3263 | ||
3264 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3265 | switch (offset) { | |
3266 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
548a648b | 3267 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3268 | return -ENXIO; |
3269 | return snd_pcm_mmap_status(substream, file, area); | |
3270 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
548a648b | 3271 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3272 | return -ENXIO; |
3273 | return snd_pcm_mmap_control(substream, file, area); | |
3274 | default: | |
3275 | return snd_pcm_mmap_data(substream, file, area); | |
3276 | } | |
3277 | return 0; | |
3278 | } | |
3279 | ||
3280 | static int snd_pcm_fasync(int fd, struct file * file, int on) | |
3281 | { | |
877211f5 TI |
3282 | struct snd_pcm_file * pcm_file; |
3283 | struct snd_pcm_substream *substream; | |
3284 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3285 | int err; |
3286 | ||
3287 | pcm_file = file->private_data; | |
3288 | substream = pcm_file->substream; | |
3289 | snd_assert(substream != NULL, return -ENXIO); | |
3290 | runtime = substream->runtime; | |
3291 | ||
3292 | err = fasync_helper(fd, file, on, &runtime->fasync); | |
3293 | if (err < 0) | |
3294 | return err; | |
3295 | return 0; | |
3296 | } | |
3297 | ||
3298 | /* | |
3299 | * ioctl32 compat | |
3300 | */ | |
3301 | #ifdef CONFIG_COMPAT | |
3302 | #include "pcm_compat.c" | |
3303 | #else | |
3304 | #define snd_pcm_ioctl_compat NULL | |
3305 | #endif | |
3306 | ||
3307 | /* | |
3308 | * To be removed helpers to keep binary compatibility | |
3309 | */ | |
3310 | ||
59d48582 | 3311 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
3312 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
3313 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) | |
3314 | ||
877211f5 TI |
3315 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
3316 | struct snd_pcm_hw_params_old *oparams) | |
1da177e4 LT |
3317 | { |
3318 | unsigned int i; | |
3319 | ||
3320 | memset(params, 0, sizeof(*params)); | |
3321 | params->flags = oparams->flags; | |
3322 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3323 | params->masks[i].bits[0] = oparams->masks[i]; | |
3324 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); | |
3325 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); | |
3326 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); | |
3327 | params->info = oparams->info; | |
3328 | params->msbits = oparams->msbits; | |
3329 | params->rate_num = oparams->rate_num; | |
3330 | params->rate_den = oparams->rate_den; | |
3331 | params->fifo_size = oparams->fifo_size; | |
3332 | } | |
3333 | ||
877211f5 TI |
3334 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
3335 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
3336 | { |
3337 | unsigned int i; | |
3338 | ||
3339 | memset(oparams, 0, sizeof(*oparams)); | |
3340 | oparams->flags = params->flags; | |
3341 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3342 | oparams->masks[i] = params->masks[i].bits[0]; | |
3343 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); | |
3344 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); | |
3345 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); | |
3346 | oparams->info = params->info; | |
3347 | oparams->msbits = params->msbits; | |
3348 | oparams->rate_num = params->rate_num; | |
3349 | oparams->rate_den = params->rate_den; | |
3350 | oparams->fifo_size = params->fifo_size; | |
3351 | } | |
3352 | ||
877211f5 TI |
3353 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
3354 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3355 | { |
877211f5 TI |
3356 | struct snd_pcm_hw_params *params; |
3357 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3358 | int err; |
3359 | ||
3360 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
3361 | if (!params) { | |
3362 | err = -ENOMEM; | |
3363 | goto out; | |
3364 | } | |
3365 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); | |
3366 | if (!oparams) { | |
3367 | err = -ENOMEM; | |
3368 | goto out; | |
3369 | } | |
3370 | ||
3371 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { | |
3372 | err = -EFAULT; | |
3373 | goto out; | |
3374 | } | |
3375 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3376 | err = snd_pcm_hw_refine(substream, params); | |
3377 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3378 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3379 | if (!err) | |
3380 | err = -EFAULT; | |
3381 | } | |
3382 | out: | |
3383 | kfree(params); | |
3384 | kfree(oparams); | |
3385 | return err; | |
3386 | } | |
3387 | ||
877211f5 TI |
3388 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
3389 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3390 | { |
877211f5 TI |
3391 | struct snd_pcm_hw_params *params; |
3392 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3393 | int err; |
3394 | ||
3395 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
3396 | if (!params) { | |
3397 | err = -ENOMEM; | |
3398 | goto out; | |
3399 | } | |
3400 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); | |
3401 | if (!oparams) { | |
3402 | err = -ENOMEM; | |
3403 | goto out; | |
3404 | } | |
3405 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { | |
3406 | err = -EFAULT; | |
3407 | goto out; | |
3408 | } | |
3409 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3410 | err = snd_pcm_hw_params(substream, params); | |
3411 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3412 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3413 | if (!err) | |
3414 | err = -EFAULT; | |
3415 | } | |
3416 | out: | |
3417 | kfree(params); | |
3418 | kfree(oparams); | |
3419 | return err; | |
3420 | } | |
59d48582 | 3421 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
1da177e4 LT |
3422 | |
3423 | /* | |
3424 | * Register section | |
3425 | */ | |
3426 | ||
2af677fc | 3427 | struct file_operations snd_pcm_f_ops[2] = { |
1da177e4 | 3428 | { |
2af677fc CL |
3429 | .owner = THIS_MODULE, |
3430 | .write = snd_pcm_write, | |
ee0b3e67 | 3431 | .aio_write = snd_pcm_aio_write, |
f87135f5 | 3432 | .open = snd_pcm_playback_open, |
2af677fc CL |
3433 | .release = snd_pcm_release, |
3434 | .poll = snd_pcm_playback_poll, | |
3435 | .unlocked_ioctl = snd_pcm_playback_ioctl, | |
3436 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3437 | .mmap = snd_pcm_mmap, | |
3438 | .fasync = snd_pcm_fasync, | |
1da177e4 LT |
3439 | }, |
3440 | { | |
2af677fc CL |
3441 | .owner = THIS_MODULE, |
3442 | .read = snd_pcm_read, | |
ee0b3e67 | 3443 | .aio_read = snd_pcm_aio_read, |
f87135f5 | 3444 | .open = snd_pcm_capture_open, |
2af677fc CL |
3445 | .release = snd_pcm_release, |
3446 | .poll = snd_pcm_capture_poll, | |
3447 | .unlocked_ioctl = snd_pcm_capture_ioctl, | |
3448 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3449 | .mmap = snd_pcm_mmap, | |
3450 | .fasync = snd_pcm_fasync, | |
1da177e4 LT |
3451 | } |
3452 | }; |