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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Digital Audio (PCM) abstract layer | |
c1017a4c | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
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 | ||
1da177e4 | 22 | #include <linux/mm.h> |
1da177e4 LT |
23 | #include <linux/file.h> |
24 | #include <linux/slab.h> | |
2db9f0a3 | 25 | #include <linux/smp_lock.h> |
1da177e4 | 26 | #include <linux/time.h> |
f011e2e2 | 27 | #include <linux/pm_qos_params.h> |
1da177e4 LT |
28 | #include <linux/uio.h> |
29 | #include <sound/core.h> | |
30 | #include <sound/control.h> | |
31 | #include <sound/info.h> | |
32 | #include <sound/pcm.h> | |
33 | #include <sound/pcm_params.h> | |
34 | #include <sound/timer.h> | |
35 | #include <sound/minors.h> | |
36 | #include <asm/io.h> | |
37 | ||
38 | /* | |
39 | * Compatibility | |
40 | */ | |
41 | ||
877211f5 | 42 | struct snd_pcm_hw_params_old { |
1da177e4 LT |
43 | unsigned int flags; |
44 | unsigned int masks[SNDRV_PCM_HW_PARAM_SUBFORMAT - | |
45 | SNDRV_PCM_HW_PARAM_ACCESS + 1]; | |
877211f5 | 46 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_TICK_TIME - |
1da177e4 LT |
47 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS + 1]; |
48 | unsigned int rmask; | |
49 | unsigned int cmask; | |
50 | unsigned int info; | |
51 | unsigned int msbits; | |
52 | unsigned int rate_num; | |
53 | unsigned int rate_den; | |
877211f5 | 54 | snd_pcm_uframes_t fifo_size; |
1da177e4 LT |
55 | unsigned char reserved[64]; |
56 | }; | |
57 | ||
59d48582 | 58 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
877211f5 TI |
59 | #define SNDRV_PCM_IOCTL_HW_REFINE_OLD _IOWR('A', 0x10, struct snd_pcm_hw_params_old) |
60 | #define SNDRV_PCM_IOCTL_HW_PARAMS_OLD _IOWR('A', 0x11, struct snd_pcm_hw_params_old) | |
1da177e4 | 61 | |
877211f5 TI |
62 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
63 | struct snd_pcm_hw_params_old __user * _oparams); | |
64 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, | |
65 | struct snd_pcm_hw_params_old __user * _oparams); | |
59d48582 | 66 | #endif |
f87135f5 | 67 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream); |
1da177e4 LT |
68 | |
69 | /* | |
70 | * | |
71 | */ | |
72 | ||
73 | DEFINE_RWLOCK(snd_pcm_link_rwlock); | |
e88e8ae6 | 74 | EXPORT_SYMBOL(snd_pcm_link_rwlock); |
1da177e4 | 75 | |
e88e8ae6 | 76 | static DECLARE_RWSEM(snd_pcm_link_rwsem); |
1da177e4 LT |
77 | |
78 | static inline mm_segment_t snd_enter_user(void) | |
79 | { | |
80 | mm_segment_t fs = get_fs(); | |
81 | set_fs(get_ds()); | |
82 | return fs; | |
83 | } | |
84 | ||
85 | static inline void snd_leave_user(mm_segment_t fs) | |
86 | { | |
87 | set_fs(fs); | |
88 | } | |
89 | ||
90 | ||
91 | ||
877211f5 | 92 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) |
1da177e4 | 93 | { |
877211f5 TI |
94 | struct snd_pcm_runtime *runtime; |
95 | struct snd_pcm *pcm = substream->pcm; | |
96 | struct snd_pcm_str *pstr = substream->pstr; | |
1da177e4 | 97 | |
1da177e4 LT |
98 | memset(info, 0, sizeof(*info)); |
99 | info->card = pcm->card->number; | |
100 | info->device = pcm->device; | |
101 | info->stream = substream->stream; | |
102 | info->subdevice = substream->number; | |
103 | strlcpy(info->id, pcm->id, sizeof(info->id)); | |
104 | strlcpy(info->name, pcm->name, sizeof(info->name)); | |
105 | info->dev_class = pcm->dev_class; | |
106 | info->dev_subclass = pcm->dev_subclass; | |
107 | info->subdevices_count = pstr->substream_count; | |
108 | info->subdevices_avail = pstr->substream_count - pstr->substream_opened; | |
109 | strlcpy(info->subname, substream->name, sizeof(info->subname)); | |
110 | runtime = substream->runtime; | |
111 | /* AB: FIXME!!! This is definitely nonsense */ | |
112 | if (runtime) { | |
113 | info->sync = runtime->sync; | |
114 | substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info); | |
115 | } | |
116 | return 0; | |
117 | } | |
118 | ||
877211f5 TI |
119 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
120 | struct snd_pcm_info __user * _info) | |
1da177e4 | 121 | { |
877211f5 | 122 | struct snd_pcm_info *info; |
1da177e4 LT |
123 | int err; |
124 | ||
125 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
126 | if (! info) | |
127 | return -ENOMEM; | |
128 | err = snd_pcm_info(substream, info); | |
129 | if (err >= 0) { | |
130 | if (copy_to_user(_info, info, sizeof(*info))) | |
131 | err = -EFAULT; | |
132 | } | |
133 | kfree(info); | |
134 | return err; | |
135 | } | |
136 | ||
137 | #undef RULES_DEBUG | |
138 | ||
139 | #ifdef RULES_DEBUG | |
140 | #define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v | |
141 | char *snd_pcm_hw_param_names[] = { | |
142 | HW_PARAM(ACCESS), | |
143 | HW_PARAM(FORMAT), | |
144 | HW_PARAM(SUBFORMAT), | |
145 | HW_PARAM(SAMPLE_BITS), | |
146 | HW_PARAM(FRAME_BITS), | |
147 | HW_PARAM(CHANNELS), | |
148 | HW_PARAM(RATE), | |
149 | HW_PARAM(PERIOD_TIME), | |
150 | HW_PARAM(PERIOD_SIZE), | |
151 | HW_PARAM(PERIOD_BYTES), | |
152 | HW_PARAM(PERIODS), | |
153 | HW_PARAM(BUFFER_TIME), | |
154 | HW_PARAM(BUFFER_SIZE), | |
155 | HW_PARAM(BUFFER_BYTES), | |
156 | HW_PARAM(TICK_TIME), | |
157 | }; | |
158 | #endif | |
159 | ||
877211f5 TI |
160 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, |
161 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
162 | { |
163 | unsigned int k; | |
877211f5 TI |
164 | struct snd_pcm_hardware *hw; |
165 | struct snd_interval *i = NULL; | |
166 | struct snd_mask *m = NULL; | |
167 | struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; | |
1da177e4 LT |
168 | unsigned int rstamps[constrs->rules_num]; |
169 | unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; | |
170 | unsigned int stamp = 2; | |
171 | int changed, again; | |
172 | ||
173 | params->info = 0; | |
174 | params->fifo_size = 0; | |
175 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) | |
176 | params->msbits = 0; | |
177 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { | |
178 | params->rate_num = 0; | |
179 | params->rate_den = 0; | |
180 | } | |
181 | ||
182 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
183 | m = hw_param_mask(params, k); | |
184 | if (snd_mask_empty(m)) | |
185 | return -EINVAL; | |
186 | if (!(params->rmask & (1 << k))) | |
187 | continue; | |
188 | #ifdef RULES_DEBUG | |
006de267 | 189 | printk(KERN_DEBUG "%s = ", snd_pcm_hw_param_names[k]); |
1da177e4 LT |
190 | printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); |
191 | #endif | |
192 | changed = snd_mask_refine(m, constrs_mask(constrs, k)); | |
193 | #ifdef RULES_DEBUG | |
194 | printk("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
195 | #endif | |
196 | if (changed) | |
197 | params->cmask |= 1 << k; | |
198 | if (changed < 0) | |
199 | return changed; | |
200 | } | |
201 | ||
202 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
203 | i = hw_param_interval(params, k); | |
204 | if (snd_interval_empty(i)) | |
205 | return -EINVAL; | |
206 | if (!(params->rmask & (1 << k))) | |
207 | continue; | |
208 | #ifdef RULES_DEBUG | |
006de267 | 209 | printk(KERN_DEBUG "%s = ", snd_pcm_hw_param_names[k]); |
1da177e4 LT |
210 | if (i->empty) |
211 | printk("empty"); | |
212 | else | |
213 | printk("%c%u %u%c", | |
214 | i->openmin ? '(' : '[', i->min, | |
215 | i->max, i->openmax ? ')' : ']'); | |
216 | printk(" -> "); | |
217 | #endif | |
218 | changed = snd_interval_refine(i, constrs_interval(constrs, k)); | |
219 | #ifdef RULES_DEBUG | |
220 | if (i->empty) | |
221 | printk("empty\n"); | |
222 | else | |
223 | printk("%c%u %u%c\n", | |
224 | i->openmin ? '(' : '[', i->min, | |
225 | i->max, i->openmax ? ')' : ']'); | |
226 | #endif | |
227 | if (changed) | |
228 | params->cmask |= 1 << k; | |
229 | if (changed < 0) | |
230 | return changed; | |
231 | } | |
232 | ||
233 | for (k = 0; k < constrs->rules_num; k++) | |
234 | rstamps[k] = 0; | |
235 | for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) | |
236 | vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0; | |
237 | do { | |
238 | again = 0; | |
239 | for (k = 0; k < constrs->rules_num; k++) { | |
877211f5 | 240 | struct snd_pcm_hw_rule *r = &constrs->rules[k]; |
1da177e4 LT |
241 | unsigned int d; |
242 | int doit = 0; | |
243 | if (r->cond && !(r->cond & params->flags)) | |
244 | continue; | |
245 | for (d = 0; r->deps[d] >= 0; d++) { | |
246 | if (vstamps[r->deps[d]] > rstamps[k]) { | |
247 | doit = 1; | |
248 | break; | |
249 | } | |
250 | } | |
251 | if (!doit) | |
252 | continue; | |
253 | #ifdef RULES_DEBUG | |
006de267 | 254 | printk(KERN_DEBUG "Rule %d [%p]: ", k, r->func); |
1da177e4 LT |
255 | if (r->var >= 0) { |
256 | printk("%s = ", snd_pcm_hw_param_names[r->var]); | |
257 | if (hw_is_mask(r->var)) { | |
258 | m = hw_param_mask(params, r->var); | |
259 | printk("%x", *m->bits); | |
260 | } else { | |
261 | i = hw_param_interval(params, r->var); | |
262 | if (i->empty) | |
263 | printk("empty"); | |
264 | else | |
265 | printk("%c%u %u%c", | |
266 | i->openmin ? '(' : '[', i->min, | |
267 | i->max, i->openmax ? ')' : ']'); | |
268 | } | |
269 | } | |
270 | #endif | |
271 | changed = r->func(params, r); | |
272 | #ifdef RULES_DEBUG | |
273 | if (r->var >= 0) { | |
274 | printk(" -> "); | |
275 | if (hw_is_mask(r->var)) | |
276 | printk("%x", *m->bits); | |
277 | else { | |
278 | if (i->empty) | |
279 | printk("empty"); | |
280 | else | |
281 | printk("%c%u %u%c", | |
282 | i->openmin ? '(' : '[', i->min, | |
283 | i->max, i->openmax ? ')' : ']'); | |
284 | } | |
285 | } | |
286 | printk("\n"); | |
287 | #endif | |
288 | rstamps[k] = stamp; | |
289 | if (changed && r->var >= 0) { | |
290 | params->cmask |= (1 << r->var); | |
291 | vstamps[r->var] = stamp; | |
292 | again = 1; | |
293 | } | |
294 | if (changed < 0) | |
295 | return changed; | |
296 | stamp++; | |
297 | } | |
298 | } while (again); | |
299 | if (!params->msbits) { | |
300 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); | |
301 | if (snd_interval_single(i)) | |
302 | params->msbits = snd_interval_value(i); | |
303 | } | |
304 | ||
305 | if (!params->rate_den) { | |
306 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
307 | if (snd_interval_single(i)) { | |
308 | params->rate_num = snd_interval_value(i); | |
309 | params->rate_den = 1; | |
310 | } | |
311 | } | |
312 | ||
313 | hw = &substream->runtime->hw; | |
314 | if (!params->info) | |
315 | params->info = hw->info; | |
316 | if (!params->fifo_size) | |
317 | params->fifo_size = hw->fifo_size; | |
318 | params->rmask = 0; | |
319 | return 0; | |
320 | } | |
321 | ||
e88e8ae6 TI |
322 | EXPORT_SYMBOL(snd_pcm_hw_refine); |
323 | ||
877211f5 TI |
324 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
325 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 326 | { |
877211f5 | 327 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
328 | int err; |
329 | ||
ef44a1ec LZ |
330 | params = memdup_user(_params, sizeof(*params)); |
331 | if (IS_ERR(params)) | |
332 | return PTR_ERR(params); | |
333 | ||
1da177e4 LT |
334 | err = snd_pcm_hw_refine(substream, params); |
335 | if (copy_to_user(_params, params, sizeof(*params))) { | |
336 | if (!err) | |
337 | err = -EFAULT; | |
338 | } | |
ef44a1ec | 339 | |
1da177e4 LT |
340 | kfree(params); |
341 | return err; | |
342 | } | |
343 | ||
9442e691 TI |
344 | static int period_to_usecs(struct snd_pcm_runtime *runtime) |
345 | { | |
346 | int usecs; | |
347 | ||
348 | if (! runtime->rate) | |
349 | return -1; /* invalid */ | |
350 | ||
351 | /* take 75% of period time as the deadline */ | |
352 | usecs = (750000 / runtime->rate) * runtime->period_size; | |
353 | usecs += ((750000 % runtime->rate) * runtime->period_size) / | |
354 | runtime->rate; | |
355 | ||
356 | return usecs; | |
357 | } | |
358 | ||
877211f5 TI |
359 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
360 | struct snd_pcm_hw_params *params) | |
1da177e4 | 361 | { |
877211f5 | 362 | struct snd_pcm_runtime *runtime; |
9442e691 | 363 | int err, usecs; |
1da177e4 LT |
364 | unsigned int bits; |
365 | snd_pcm_uframes_t frames; | |
366 | ||
7eaa943c TI |
367 | if (PCM_RUNTIME_CHECK(substream)) |
368 | return -ENXIO; | |
1da177e4 | 369 | runtime = substream->runtime; |
1da177e4 LT |
370 | snd_pcm_stream_lock_irq(substream); |
371 | switch (runtime->status->state) { | |
372 | case SNDRV_PCM_STATE_OPEN: | |
373 | case SNDRV_PCM_STATE_SETUP: | |
374 | case SNDRV_PCM_STATE_PREPARED: | |
375 | break; | |
376 | default: | |
377 | snd_pcm_stream_unlock_irq(substream); | |
378 | return -EBADFD; | |
379 | } | |
380 | snd_pcm_stream_unlock_irq(substream); | |
381 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
382 | if (!substream->oss.oss) | |
383 | #endif | |
9c323fcb | 384 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
385 | return -EBADFD; |
386 | ||
387 | params->rmask = ~0U; | |
388 | err = snd_pcm_hw_refine(substream, params); | |
389 | if (err < 0) | |
390 | goto _error; | |
391 | ||
392 | err = snd_pcm_hw_params_choose(substream, params); | |
393 | if (err < 0) | |
394 | goto _error; | |
395 | ||
396 | if (substream->ops->hw_params != NULL) { | |
397 | err = substream->ops->hw_params(substream, params); | |
398 | if (err < 0) | |
399 | goto _error; | |
400 | } | |
401 | ||
402 | runtime->access = params_access(params); | |
403 | runtime->format = params_format(params); | |
404 | runtime->subformat = params_subformat(params); | |
405 | runtime->channels = params_channels(params); | |
406 | runtime->rate = params_rate(params); | |
407 | runtime->period_size = params_period_size(params); | |
408 | runtime->periods = params_periods(params); | |
409 | runtime->buffer_size = params_buffer_size(params); | |
1da177e4 LT |
410 | runtime->info = params->info; |
411 | runtime->rate_num = params->rate_num; | |
412 | runtime->rate_den = params->rate_den; | |
413 | ||
414 | bits = snd_pcm_format_physical_width(runtime->format); | |
415 | runtime->sample_bits = bits; | |
416 | bits *= runtime->channels; | |
417 | runtime->frame_bits = bits; | |
418 | frames = 1; | |
419 | while (bits % 8 != 0) { | |
420 | bits *= 2; | |
421 | frames *= 2; | |
422 | } | |
423 | runtime->byte_align = bits / 8; | |
424 | runtime->min_align = frames; | |
425 | ||
426 | /* Default sw params */ | |
427 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
428 | runtime->period_step = 1; | |
1da177e4 | 429 | runtime->control->avail_min = runtime->period_size; |
1da177e4 LT |
430 | runtime->start_threshold = 1; |
431 | runtime->stop_threshold = runtime->buffer_size; | |
432 | runtime->silence_threshold = 0; | |
433 | runtime->silence_size = 0; | |
434 | runtime->boundary = runtime->buffer_size; | |
435 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) | |
436 | runtime->boundary *= 2; | |
437 | ||
438 | snd_pcm_timer_resolution_change(substream); | |
439 | runtime->status->state = SNDRV_PCM_STATE_SETUP; | |
9442e691 | 440 | |
f011e2e2 MG |
441 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, |
442 | substream->latency_id); | |
9442e691 | 443 | if ((usecs = period_to_usecs(runtime)) >= 0) |
f011e2e2 MG |
444 | pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, |
445 | substream->latency_id, usecs); | |
1da177e4 LT |
446 | return 0; |
447 | _error: | |
448 | /* hardware might be unuseable from this time, | |
449 | so we force application to retry to set | |
450 | the correct hardware parameter settings */ | |
451 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
452 | if (substream->ops->hw_free != NULL) | |
453 | substream->ops->hw_free(substream); | |
454 | return err; | |
455 | } | |
456 | ||
877211f5 TI |
457 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
458 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 459 | { |
877211f5 | 460 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
461 | int err; |
462 | ||
ef44a1ec LZ |
463 | params = memdup_user(_params, sizeof(*params)); |
464 | if (IS_ERR(params)) | |
465 | return PTR_ERR(params); | |
466 | ||
1da177e4 LT |
467 | err = snd_pcm_hw_params(substream, params); |
468 | if (copy_to_user(_params, params, sizeof(*params))) { | |
469 | if (!err) | |
470 | err = -EFAULT; | |
471 | } | |
ef44a1ec | 472 | |
1da177e4 LT |
473 | kfree(params); |
474 | return err; | |
475 | } | |
476 | ||
877211f5 | 477 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 478 | { |
877211f5 | 479 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
480 | int result = 0; |
481 | ||
7eaa943c TI |
482 | if (PCM_RUNTIME_CHECK(substream)) |
483 | return -ENXIO; | |
1da177e4 | 484 | runtime = substream->runtime; |
1da177e4 LT |
485 | snd_pcm_stream_lock_irq(substream); |
486 | switch (runtime->status->state) { | |
487 | case SNDRV_PCM_STATE_SETUP: | |
488 | case SNDRV_PCM_STATE_PREPARED: | |
489 | break; | |
490 | default: | |
491 | snd_pcm_stream_unlock_irq(substream); | |
492 | return -EBADFD; | |
493 | } | |
494 | snd_pcm_stream_unlock_irq(substream); | |
9c323fcb | 495 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
496 | return -EBADFD; |
497 | if (substream->ops->hw_free) | |
498 | result = substream->ops->hw_free(substream); | |
499 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
f011e2e2 MG |
500 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, |
501 | substream->latency_id); | |
1da177e4 LT |
502 | return result; |
503 | } | |
504 | ||
877211f5 TI |
505 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
506 | struct snd_pcm_sw_params *params) | |
1da177e4 | 507 | { |
877211f5 | 508 | struct snd_pcm_runtime *runtime; |
1da177e4 | 509 | |
7eaa943c TI |
510 | if (PCM_RUNTIME_CHECK(substream)) |
511 | return -ENXIO; | |
1da177e4 | 512 | runtime = substream->runtime; |
1da177e4 LT |
513 | snd_pcm_stream_lock_irq(substream); |
514 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
515 | snd_pcm_stream_unlock_irq(substream); | |
516 | return -EBADFD; | |
517 | } | |
518 | snd_pcm_stream_unlock_irq(substream); | |
519 | ||
520 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) | |
521 | return -EINVAL; | |
522 | if (params->avail_min == 0) | |
523 | return -EINVAL; | |
1da177e4 LT |
524 | if (params->silence_size >= runtime->boundary) { |
525 | if (params->silence_threshold != 0) | |
526 | return -EINVAL; | |
527 | } else { | |
528 | if (params->silence_size > params->silence_threshold) | |
529 | return -EINVAL; | |
530 | if (params->silence_threshold > runtime->buffer_size) | |
531 | return -EINVAL; | |
532 | } | |
533 | snd_pcm_stream_lock_irq(substream); | |
534 | runtime->tstamp_mode = params->tstamp_mode; | |
1da177e4 LT |
535 | runtime->period_step = params->period_step; |
536 | runtime->control->avail_min = params->avail_min; | |
537 | runtime->start_threshold = params->start_threshold; | |
538 | runtime->stop_threshold = params->stop_threshold; | |
539 | runtime->silence_threshold = params->silence_threshold; | |
540 | runtime->silence_size = params->silence_size; | |
1da177e4 LT |
541 | params->boundary = runtime->boundary; |
542 | if (snd_pcm_running(substream)) { | |
1da177e4 LT |
543 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
544 | runtime->silence_size > 0) | |
545 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
546 | wake_up(&runtime->sleep); | |
547 | } | |
548 | snd_pcm_stream_unlock_irq(substream); | |
549 | return 0; | |
550 | } | |
551 | ||
877211f5 TI |
552 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
553 | struct snd_pcm_sw_params __user * _params) | |
1da177e4 | 554 | { |
877211f5 | 555 | struct snd_pcm_sw_params params; |
1da177e4 LT |
556 | int err; |
557 | if (copy_from_user(¶ms, _params, sizeof(params))) | |
558 | return -EFAULT; | |
559 | err = snd_pcm_sw_params(substream, ¶ms); | |
560 | if (copy_to_user(_params, ¶ms, sizeof(params))) | |
561 | return -EFAULT; | |
562 | return err; | |
563 | } | |
564 | ||
877211f5 TI |
565 | int snd_pcm_status(struct snd_pcm_substream *substream, |
566 | struct snd_pcm_status *status) | |
1da177e4 | 567 | { |
877211f5 | 568 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
569 | |
570 | snd_pcm_stream_lock_irq(substream); | |
571 | status->state = runtime->status->state; | |
572 | status->suspended_state = runtime->status->suspended_state; | |
573 | if (status->state == SNDRV_PCM_STATE_OPEN) | |
574 | goto _end; | |
575 | status->trigger_tstamp = runtime->trigger_tstamp; | |
8c121586 | 576 | if (snd_pcm_running(substream)) { |
1da177e4 | 577 | snd_pcm_update_hw_ptr(substream); |
8c121586 JK |
578 | if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) { |
579 | status->tstamp = runtime->status->tstamp; | |
580 | goto _tstamp_end; | |
581 | } | |
582 | } | |
a713b583 | 583 | snd_pcm_gettime(runtime, &status->tstamp); |
8c121586 | 584 | _tstamp_end: |
1da177e4 LT |
585 | status->appl_ptr = runtime->control->appl_ptr; |
586 | status->hw_ptr = runtime->status->hw_ptr; | |
587 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
588 | status->avail = snd_pcm_playback_avail(runtime); | |
589 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
590 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
591 | status->delay = runtime->buffer_size - status->avail; | |
592 | else | |
593 | status->delay = 0; | |
594 | } else { | |
595 | status->avail = snd_pcm_capture_avail(runtime); | |
596 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) | |
597 | status->delay = status->avail; | |
598 | else | |
599 | status->delay = 0; | |
600 | } | |
601 | status->avail_max = runtime->avail_max; | |
602 | status->overrange = runtime->overrange; | |
603 | runtime->avail_max = 0; | |
604 | runtime->overrange = 0; | |
605 | _end: | |
606 | snd_pcm_stream_unlock_irq(substream); | |
607 | return 0; | |
608 | } | |
609 | ||
877211f5 TI |
610 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
611 | struct snd_pcm_status __user * _status) | |
1da177e4 | 612 | { |
877211f5 | 613 | struct snd_pcm_status status; |
1da177e4 LT |
614 | int res; |
615 | ||
1da177e4 LT |
616 | memset(&status, 0, sizeof(status)); |
617 | res = snd_pcm_status(substream, &status); | |
618 | if (res < 0) | |
619 | return res; | |
620 | if (copy_to_user(_status, &status, sizeof(status))) | |
621 | return -EFAULT; | |
622 | return 0; | |
623 | } | |
624 | ||
877211f5 TI |
625 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
626 | struct snd_pcm_channel_info * info) | |
1da177e4 | 627 | { |
877211f5 | 628 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
629 | unsigned int channel; |
630 | ||
1da177e4 LT |
631 | channel = info->channel; |
632 | runtime = substream->runtime; | |
633 | snd_pcm_stream_lock_irq(substream); | |
634 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
635 | snd_pcm_stream_unlock_irq(substream); | |
636 | return -EBADFD; | |
637 | } | |
638 | snd_pcm_stream_unlock_irq(substream); | |
639 | if (channel >= runtime->channels) | |
640 | return -EINVAL; | |
641 | memset(info, 0, sizeof(*info)); | |
642 | info->channel = channel; | |
643 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); | |
644 | } | |
645 | ||
877211f5 TI |
646 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
647 | struct snd_pcm_channel_info __user * _info) | |
1da177e4 | 648 | { |
877211f5 | 649 | struct snd_pcm_channel_info info; |
1da177e4 LT |
650 | int res; |
651 | ||
652 | if (copy_from_user(&info, _info, sizeof(info))) | |
653 | return -EFAULT; | |
654 | res = snd_pcm_channel_info(substream, &info); | |
655 | if (res < 0) | |
656 | return res; | |
657 | if (copy_to_user(_info, &info, sizeof(info))) | |
658 | return -EFAULT; | |
659 | return 0; | |
660 | } | |
661 | ||
877211f5 | 662 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
1da177e4 | 663 | { |
877211f5 | 664 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
665 | if (runtime->trigger_master == NULL) |
666 | return; | |
667 | if (runtime->trigger_master == substream) { | |
b751eef1 | 668 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); |
1da177e4 LT |
669 | } else { |
670 | snd_pcm_trigger_tstamp(runtime->trigger_master); | |
671 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; | |
672 | } | |
673 | runtime->trigger_master = NULL; | |
674 | } | |
675 | ||
676 | struct action_ops { | |
877211f5 TI |
677 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
678 | int (*do_action)(struct snd_pcm_substream *substream, int state); | |
679 | void (*undo_action)(struct snd_pcm_substream *substream, int state); | |
680 | void (*post_action)(struct snd_pcm_substream *substream, int state); | |
1da177e4 LT |
681 | }; |
682 | ||
683 | /* | |
684 | * this functions is core for handling of linked stream | |
685 | * Note: the stream state might be changed also on failure | |
686 | * Note2: call with calling stream lock + link lock | |
687 | */ | |
688 | static int snd_pcm_action_group(struct action_ops *ops, | |
877211f5 | 689 | struct snd_pcm_substream *substream, |
1da177e4 LT |
690 | int state, int do_lock) |
691 | { | |
877211f5 TI |
692 | struct snd_pcm_substream *s = NULL; |
693 | struct snd_pcm_substream *s1; | |
1da177e4 LT |
694 | int res = 0; |
695 | ||
ef991b95 | 696 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 697 | if (do_lock && s != substream) |
208eee2a FD |
698 | spin_lock_nested(&s->self_group.lock, |
699 | SINGLE_DEPTH_NESTING); | |
1da177e4 LT |
700 | res = ops->pre_action(s, state); |
701 | if (res < 0) | |
702 | goto _unlock; | |
703 | } | |
ef991b95 | 704 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
705 | res = ops->do_action(s, state); |
706 | if (res < 0) { | |
707 | if (ops->undo_action) { | |
ef991b95 | 708 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
709 | if (s1 == s) /* failed stream */ |
710 | break; | |
711 | ops->undo_action(s1, state); | |
712 | } | |
713 | } | |
714 | s = NULL; /* unlock all */ | |
715 | goto _unlock; | |
716 | } | |
717 | } | |
ef991b95 | 718 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
719 | ops->post_action(s, state); |
720 | } | |
721 | _unlock: | |
722 | if (do_lock) { | |
723 | /* unlock streams */ | |
ef991b95 | 724 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
725 | if (s1 != substream) |
726 | spin_unlock(&s1->self_group.lock); | |
727 | if (s1 == s) /* end */ | |
728 | break; | |
729 | } | |
730 | } | |
731 | return res; | |
732 | } | |
733 | ||
734 | /* | |
735 | * Note: call with stream lock | |
736 | */ | |
737 | static int snd_pcm_action_single(struct action_ops *ops, | |
877211f5 | 738 | struct snd_pcm_substream *substream, |
1da177e4 LT |
739 | int state) |
740 | { | |
741 | int res; | |
742 | ||
743 | res = ops->pre_action(substream, state); | |
744 | if (res < 0) | |
745 | return res; | |
746 | res = ops->do_action(substream, state); | |
747 | if (res == 0) | |
748 | ops->post_action(substream, state); | |
749 | else if (ops->undo_action) | |
750 | ops->undo_action(substream, state); | |
751 | return res; | |
752 | } | |
753 | ||
754 | /* | |
755 | * Note: call with stream lock | |
756 | */ | |
757 | static int snd_pcm_action(struct action_ops *ops, | |
877211f5 | 758 | struct snd_pcm_substream *substream, |
1da177e4 LT |
759 | int state) |
760 | { | |
761 | int res; | |
762 | ||
763 | if (snd_pcm_stream_linked(substream)) { | |
764 | if (!spin_trylock(&substream->group->lock)) { | |
765 | spin_unlock(&substream->self_group.lock); | |
766 | spin_lock(&substream->group->lock); | |
767 | spin_lock(&substream->self_group.lock); | |
768 | } | |
769 | res = snd_pcm_action_group(ops, substream, state, 1); | |
770 | spin_unlock(&substream->group->lock); | |
771 | } else { | |
772 | res = snd_pcm_action_single(ops, substream, state); | |
773 | } | |
774 | return res; | |
775 | } | |
776 | ||
777 | /* | |
778 | * Note: don't use any locks before | |
779 | */ | |
780 | static int snd_pcm_action_lock_irq(struct action_ops *ops, | |
877211f5 | 781 | struct snd_pcm_substream *substream, |
1da177e4 LT |
782 | int state) |
783 | { | |
784 | int res; | |
785 | ||
786 | read_lock_irq(&snd_pcm_link_rwlock); | |
787 | if (snd_pcm_stream_linked(substream)) { | |
788 | spin_lock(&substream->group->lock); | |
789 | spin_lock(&substream->self_group.lock); | |
790 | res = snd_pcm_action_group(ops, substream, state, 1); | |
791 | spin_unlock(&substream->self_group.lock); | |
792 | spin_unlock(&substream->group->lock); | |
793 | } else { | |
794 | spin_lock(&substream->self_group.lock); | |
795 | res = snd_pcm_action_single(ops, substream, state); | |
796 | spin_unlock(&substream->self_group.lock); | |
797 | } | |
798 | read_unlock_irq(&snd_pcm_link_rwlock); | |
799 | return res; | |
800 | } | |
801 | ||
802 | /* | |
803 | */ | |
804 | static int snd_pcm_action_nonatomic(struct action_ops *ops, | |
877211f5 | 805 | struct snd_pcm_substream *substream, |
1da177e4 LT |
806 | int state) |
807 | { | |
808 | int res; | |
809 | ||
810 | down_read(&snd_pcm_link_rwsem); | |
811 | if (snd_pcm_stream_linked(substream)) | |
812 | res = snd_pcm_action_group(ops, substream, state, 0); | |
813 | else | |
814 | res = snd_pcm_action_single(ops, substream, state); | |
815 | up_read(&snd_pcm_link_rwsem); | |
816 | return res; | |
817 | } | |
818 | ||
819 | /* | |
820 | * start callbacks | |
821 | */ | |
877211f5 | 822 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 823 | { |
877211f5 | 824 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
825 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
826 | return -EBADFD; | |
827 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
828 | !snd_pcm_playback_data(substream)) | |
829 | return -EPIPE; | |
830 | runtime->trigger_master = substream; | |
831 | return 0; | |
832 | } | |
833 | ||
877211f5 | 834 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
835 | { |
836 | if (substream->runtime->trigger_master != substream) | |
837 | return 0; | |
838 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); | |
839 | } | |
840 | ||
877211f5 | 841 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
842 | { |
843 | if (substream->runtime->trigger_master == substream) | |
844 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
845 | } | |
846 | ||
877211f5 | 847 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 848 | { |
877211f5 | 849 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
850 | snd_pcm_trigger_tstamp(substream); |
851 | runtime->status->state = state; | |
852 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
853 | runtime->silence_size > 0) | |
854 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1da177e4 | 855 | if (substream->timer) |
877211f5 TI |
856 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
857 | &runtime->trigger_tstamp); | |
1da177e4 LT |
858 | } |
859 | ||
860 | static struct action_ops snd_pcm_action_start = { | |
861 | .pre_action = snd_pcm_pre_start, | |
862 | .do_action = snd_pcm_do_start, | |
863 | .undo_action = snd_pcm_undo_start, | |
864 | .post_action = snd_pcm_post_start | |
865 | }; | |
866 | ||
867 | /** | |
1c85cc64 | 868 | * snd_pcm_start - start all linked streams |
df8db936 | 869 | * @substream: the PCM substream instance |
1da177e4 | 870 | */ |
877211f5 | 871 | int snd_pcm_start(struct snd_pcm_substream *substream) |
1da177e4 | 872 | { |
877211f5 TI |
873 | return snd_pcm_action(&snd_pcm_action_start, substream, |
874 | SNDRV_PCM_STATE_RUNNING); | |
1da177e4 LT |
875 | } |
876 | ||
877 | /* | |
878 | * stop callbacks | |
879 | */ | |
877211f5 | 880 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 881 | { |
877211f5 | 882 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
883 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
884 | return -EBADFD; | |
885 | runtime->trigger_master = substream; | |
886 | return 0; | |
887 | } | |
888 | ||
877211f5 | 889 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
890 | { |
891 | if (substream->runtime->trigger_master == substream && | |
892 | snd_pcm_running(substream)) | |
893 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
894 | return 0; /* unconditonally stop all substreams */ | |
895 | } | |
896 | ||
877211f5 | 897 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 898 | { |
877211f5 | 899 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
900 | if (runtime->status->state != state) { |
901 | snd_pcm_trigger_tstamp(substream); | |
902 | if (substream->timer) | |
877211f5 TI |
903 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
904 | &runtime->trigger_tstamp); | |
1da177e4 | 905 | runtime->status->state = state; |
1da177e4 LT |
906 | } |
907 | wake_up(&runtime->sleep); | |
908 | } | |
909 | ||
910 | static struct action_ops snd_pcm_action_stop = { | |
911 | .pre_action = snd_pcm_pre_stop, | |
912 | .do_action = snd_pcm_do_stop, | |
913 | .post_action = snd_pcm_post_stop | |
914 | }; | |
915 | ||
916 | /** | |
1c85cc64 | 917 | * snd_pcm_stop - try to stop all running streams in the substream group |
df8db936 TI |
918 | * @substream: the PCM substream instance |
919 | * @state: PCM state after stopping the stream | |
1da177e4 | 920 | * |
1c85cc64 | 921 | * The state of each stream is then changed to the given state unconditionally. |
1da177e4 | 922 | */ |
877211f5 | 923 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
924 | { |
925 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); | |
926 | } | |
927 | ||
e88e8ae6 TI |
928 | EXPORT_SYMBOL(snd_pcm_stop); |
929 | ||
1da177e4 | 930 | /** |
1c85cc64 | 931 | * snd_pcm_drain_done - stop the DMA only when the given stream is playback |
df8db936 | 932 | * @substream: the PCM substream |
1da177e4 | 933 | * |
1c85cc64 | 934 | * After stopping, the state is changed to SETUP. |
1da177e4 LT |
935 | * Unlike snd_pcm_stop(), this affects only the given stream. |
936 | */ | |
877211f5 | 937 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
1da177e4 | 938 | { |
877211f5 TI |
939 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
940 | SNDRV_PCM_STATE_SETUP); | |
1da177e4 LT |
941 | } |
942 | ||
943 | /* | |
944 | * pause callbacks | |
945 | */ | |
877211f5 | 946 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 947 | { |
877211f5 | 948 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
949 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
950 | return -ENOSYS; | |
951 | if (push) { | |
952 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) | |
953 | return -EBADFD; | |
954 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) | |
955 | return -EBADFD; | |
956 | runtime->trigger_master = substream; | |
957 | return 0; | |
958 | } | |
959 | ||
877211f5 | 960 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
961 | { |
962 | if (substream->runtime->trigger_master != substream) | |
963 | return 0; | |
964 | return substream->ops->trigger(substream, | |
965 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : | |
966 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
967 | } | |
968 | ||
877211f5 | 969 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
970 | { |
971 | if (substream->runtime->trigger_master == substream) | |
972 | substream->ops->trigger(substream, | |
973 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : | |
974 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
975 | } | |
976 | ||
877211f5 | 977 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 978 | { |
877211f5 | 979 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
980 | snd_pcm_trigger_tstamp(substream); |
981 | if (push) { | |
982 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; | |
983 | if (substream->timer) | |
877211f5 TI |
984 | snd_timer_notify(substream->timer, |
985 | SNDRV_TIMER_EVENT_MPAUSE, | |
986 | &runtime->trigger_tstamp); | |
1da177e4 LT |
987 | wake_up(&runtime->sleep); |
988 | } else { | |
989 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; | |
1da177e4 | 990 | if (substream->timer) |
877211f5 TI |
991 | snd_timer_notify(substream->timer, |
992 | SNDRV_TIMER_EVENT_MCONTINUE, | |
993 | &runtime->trigger_tstamp); | |
1da177e4 LT |
994 | } |
995 | } | |
996 | ||
997 | static struct action_ops snd_pcm_action_pause = { | |
998 | .pre_action = snd_pcm_pre_pause, | |
999 | .do_action = snd_pcm_do_pause, | |
1000 | .undo_action = snd_pcm_undo_pause, | |
1001 | .post_action = snd_pcm_post_pause | |
1002 | }; | |
1003 | ||
1004 | /* | |
1005 | * Push/release the pause for all linked streams. | |
1006 | */ | |
877211f5 | 1007 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1008 | { |
1009 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); | |
1010 | } | |
1011 | ||
1012 | #ifdef CONFIG_PM | |
1013 | /* suspend */ | |
1014 | ||
877211f5 | 1015 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1016 | { |
877211f5 | 1017 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1018 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
1019 | return -EBUSY; | |
1020 | runtime->trigger_master = substream; | |
1021 | return 0; | |
1022 | } | |
1023 | ||
877211f5 | 1024 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1025 | { |
877211f5 | 1026 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1027 | if (runtime->trigger_master != substream) |
1028 | return 0; | |
1029 | if (! snd_pcm_running(substream)) | |
1030 | return 0; | |
1031 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1032 | return 0; /* suspend unconditionally */ | |
1033 | } | |
1034 | ||
877211f5 | 1035 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1036 | { |
877211f5 | 1037 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1038 | snd_pcm_trigger_tstamp(substream); |
1039 | if (substream->timer) | |
877211f5 TI |
1040 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
1041 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1042 | runtime->status->suspended_state = runtime->status->state; |
1043 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; | |
1da177e4 LT |
1044 | wake_up(&runtime->sleep); |
1045 | } | |
1046 | ||
1047 | static struct action_ops snd_pcm_action_suspend = { | |
1048 | .pre_action = snd_pcm_pre_suspend, | |
1049 | .do_action = snd_pcm_do_suspend, | |
1050 | .post_action = snd_pcm_post_suspend | |
1051 | }; | |
1052 | ||
1053 | /** | |
1c85cc64 | 1054 | * snd_pcm_suspend - trigger SUSPEND to all linked streams |
df8db936 | 1055 | * @substream: the PCM substream |
1da177e4 | 1056 | * |
1da177e4 LT |
1057 | * After this call, all streams are changed to SUSPENDED state. |
1058 | */ | |
877211f5 | 1059 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
1da177e4 LT |
1060 | { |
1061 | int err; | |
1062 | unsigned long flags; | |
1063 | ||
603bf524 TI |
1064 | if (! substream) |
1065 | return 0; | |
1066 | ||
1da177e4 LT |
1067 | snd_pcm_stream_lock_irqsave(substream, flags); |
1068 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); | |
1069 | snd_pcm_stream_unlock_irqrestore(substream, flags); | |
1070 | return err; | |
1071 | } | |
1072 | ||
e88e8ae6 TI |
1073 | EXPORT_SYMBOL(snd_pcm_suspend); |
1074 | ||
1da177e4 | 1075 | /** |
1c85cc64 | 1076 | * snd_pcm_suspend_all - trigger SUSPEND to all substreams in the given pcm |
df8db936 | 1077 | * @pcm: the PCM instance |
1da177e4 | 1078 | * |
1da177e4 LT |
1079 | * After this call, all streams are changed to SUSPENDED state. |
1080 | */ | |
877211f5 | 1081 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
1da177e4 | 1082 | { |
877211f5 | 1083 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1084 | int stream, err = 0; |
1085 | ||
603bf524 TI |
1086 | if (! pcm) |
1087 | return 0; | |
1088 | ||
1da177e4 | 1089 | for (stream = 0; stream < 2; stream++) { |
877211f5 TI |
1090 | for (substream = pcm->streams[stream].substream; |
1091 | substream; substream = substream->next) { | |
1da177e4 LT |
1092 | /* FIXME: the open/close code should lock this as well */ |
1093 | if (substream->runtime == NULL) | |
1094 | continue; | |
1095 | err = snd_pcm_suspend(substream); | |
1096 | if (err < 0 && err != -EBUSY) | |
1097 | return err; | |
1098 | } | |
1099 | } | |
1100 | return 0; | |
1101 | } | |
1102 | ||
e88e8ae6 TI |
1103 | EXPORT_SYMBOL(snd_pcm_suspend_all); |
1104 | ||
1da177e4 LT |
1105 | /* resume */ |
1106 | ||
877211f5 | 1107 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1108 | { |
877211f5 | 1109 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1110 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
1111 | return -ENOSYS; | |
1112 | runtime->trigger_master = substream; | |
1113 | return 0; | |
1114 | } | |
1115 | ||
877211f5 | 1116 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1117 | { |
877211f5 | 1118 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1119 | if (runtime->trigger_master != substream) |
1120 | return 0; | |
1121 | /* DMA not running previously? */ | |
1122 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && | |
1123 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || | |
1124 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
1125 | return 0; | |
1126 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); | |
1127 | } | |
1128 | ||
877211f5 | 1129 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1130 | { |
1131 | if (substream->runtime->trigger_master == substream && | |
1132 | snd_pcm_running(substream)) | |
1133 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1134 | } | |
1135 | ||
877211f5 | 1136 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1137 | { |
877211f5 | 1138 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1139 | snd_pcm_trigger_tstamp(substream); |
1140 | if (substream->timer) | |
877211f5 TI |
1141 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
1142 | &runtime->trigger_tstamp); | |
1da177e4 | 1143 | runtime->status->state = runtime->status->suspended_state; |
1da177e4 LT |
1144 | } |
1145 | ||
1146 | static struct action_ops snd_pcm_action_resume = { | |
1147 | .pre_action = snd_pcm_pre_resume, | |
1148 | .do_action = snd_pcm_do_resume, | |
1149 | .undo_action = snd_pcm_undo_resume, | |
1150 | .post_action = snd_pcm_post_resume | |
1151 | }; | |
1152 | ||
877211f5 | 1153 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 | 1154 | { |
877211f5 | 1155 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1156 | int res; |
1157 | ||
1158 | snd_power_lock(card); | |
cbac4b0c | 1159 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
1da177e4 LT |
1160 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
1161 | snd_power_unlock(card); | |
1162 | return res; | |
1163 | } | |
1164 | ||
1165 | #else | |
1166 | ||
877211f5 | 1167 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 LT |
1168 | { |
1169 | return -ENOSYS; | |
1170 | } | |
1171 | ||
1172 | #endif /* CONFIG_PM */ | |
1173 | ||
1174 | /* | |
1175 | * xrun ioctl | |
1176 | * | |
1177 | * Change the RUNNING stream(s) to XRUN state. | |
1178 | */ | |
877211f5 | 1179 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
1da177e4 | 1180 | { |
877211f5 TI |
1181 | struct snd_card *card = substream->pcm->card; |
1182 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
1183 | int result; |
1184 | ||
1185 | snd_power_lock(card); | |
1186 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1187 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1188 | if (result < 0) |
1189 | goto _unlock; | |
1190 | } | |
1191 | ||
1192 | snd_pcm_stream_lock_irq(substream); | |
1193 | switch (runtime->status->state) { | |
1194 | case SNDRV_PCM_STATE_XRUN: | |
1195 | result = 0; /* already there */ | |
1196 | break; | |
1197 | case SNDRV_PCM_STATE_RUNNING: | |
1198 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
1199 | break; | |
1200 | default: | |
1201 | result = -EBADFD; | |
1202 | } | |
1203 | snd_pcm_stream_unlock_irq(substream); | |
1204 | _unlock: | |
1205 | snd_power_unlock(card); | |
1206 | return result; | |
1207 | } | |
1208 | ||
1209 | /* | |
1210 | * reset ioctl | |
1211 | */ | |
877211f5 | 1212 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1213 | { |
877211f5 | 1214 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1215 | switch (runtime->status->state) { |
1216 | case SNDRV_PCM_STATE_RUNNING: | |
1217 | case SNDRV_PCM_STATE_PREPARED: | |
1218 | case SNDRV_PCM_STATE_PAUSED: | |
1219 | case SNDRV_PCM_STATE_SUSPENDED: | |
1220 | return 0; | |
1221 | default: | |
1222 | return -EBADFD; | |
1223 | } | |
1224 | } | |
1225 | ||
877211f5 | 1226 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1227 | { |
877211f5 | 1228 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1229 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
1230 | if (err < 0) | |
1231 | return err; | |
1da177e4 | 1232 | runtime->hw_ptr_base = 0; |
877211f5 TI |
1233 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
1234 | runtime->status->hw_ptr % runtime->period_size; | |
1da177e4 LT |
1235 | runtime->silence_start = runtime->status->hw_ptr; |
1236 | runtime->silence_filled = 0; | |
1237 | return 0; | |
1238 | } | |
1239 | ||
877211f5 | 1240 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1241 | { |
877211f5 | 1242 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1243 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1244 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
1245 | runtime->silence_size > 0) | |
1246 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1247 | } | |
1248 | ||
1249 | static struct action_ops snd_pcm_action_reset = { | |
1250 | .pre_action = snd_pcm_pre_reset, | |
1251 | .do_action = snd_pcm_do_reset, | |
1252 | .post_action = snd_pcm_post_reset | |
1253 | }; | |
1254 | ||
877211f5 | 1255 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
1da177e4 LT |
1256 | { |
1257 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); | |
1258 | } | |
1259 | ||
1260 | /* | |
1261 | * prepare ioctl | |
1262 | */ | |
0df63e44 TI |
1263 | /* we use the second argument for updating f_flags */ |
1264 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, | |
1265 | int f_flags) | |
1da177e4 | 1266 | { |
877211f5 | 1267 | struct snd_pcm_runtime *runtime = substream->runtime; |
de1b8b93 TI |
1268 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1269 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1270 | return -EBADFD; |
1271 | if (snd_pcm_running(substream)) | |
1272 | return -EBUSY; | |
0df63e44 | 1273 | substream->f_flags = f_flags; |
1da177e4 LT |
1274 | return 0; |
1275 | } | |
1276 | ||
877211f5 | 1277 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1278 | { |
1279 | int err; | |
1280 | err = substream->ops->prepare(substream); | |
1281 | if (err < 0) | |
1282 | return err; | |
1283 | return snd_pcm_do_reset(substream, 0); | |
1284 | } | |
1285 | ||
877211f5 | 1286 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1287 | { |
877211f5 | 1288 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1289 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1290 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; | |
1291 | } | |
1292 | ||
1293 | static struct action_ops snd_pcm_action_prepare = { | |
1294 | .pre_action = snd_pcm_pre_prepare, | |
1295 | .do_action = snd_pcm_do_prepare, | |
1296 | .post_action = snd_pcm_post_prepare | |
1297 | }; | |
1298 | ||
1299 | /** | |
1c85cc64 | 1300 | * snd_pcm_prepare - prepare the PCM substream to be triggerable |
df8db936 | 1301 | * @substream: the PCM substream instance |
0df63e44 | 1302 | * @file: file to refer f_flags |
1da177e4 | 1303 | */ |
0df63e44 TI |
1304 | static int snd_pcm_prepare(struct snd_pcm_substream *substream, |
1305 | struct file *file) | |
1da177e4 LT |
1306 | { |
1307 | int res; | |
877211f5 | 1308 | struct snd_card *card = substream->pcm->card; |
0df63e44 TI |
1309 | int f_flags; |
1310 | ||
1311 | if (file) | |
1312 | f_flags = file->f_flags; | |
1313 | else | |
1314 | f_flags = substream->f_flags; | |
1da177e4 LT |
1315 | |
1316 | snd_power_lock(card); | |
cbac4b0c | 1317 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
0df63e44 TI |
1318 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, |
1319 | substream, f_flags); | |
1da177e4 LT |
1320 | snd_power_unlock(card); |
1321 | return res; | |
1322 | } | |
1323 | ||
1324 | /* | |
1325 | * drain ioctl | |
1326 | */ | |
1327 | ||
877211f5 | 1328 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1329 | { |
0df63e44 | 1330 | if (substream->f_flags & O_NONBLOCK) |
1da177e4 LT |
1331 | return -EAGAIN; |
1332 | substream->runtime->trigger_master = substream; | |
1333 | return 0; | |
1334 | } | |
1335 | ||
877211f5 | 1336 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1337 | { |
877211f5 | 1338 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1339 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1340 | switch (runtime->status->state) { | |
1341 | case SNDRV_PCM_STATE_PREPARED: | |
1342 | /* start playback stream if possible */ | |
1343 | if (! snd_pcm_playback_empty(substream)) { | |
1344 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1345 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1346 | } | |
1347 | break; | |
1348 | case SNDRV_PCM_STATE_RUNNING: | |
1349 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; | |
1350 | break; | |
1351 | default: | |
1352 | break; | |
1353 | } | |
1354 | } else { | |
1355 | /* stop running stream */ | |
1356 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { | |
b05e5787 | 1357 | int new_state = snd_pcm_capture_avail(runtime) > 0 ? |
1da177e4 | 1358 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; |
b05e5787 MÅš |
1359 | snd_pcm_do_stop(substream, new_state); |
1360 | snd_pcm_post_stop(substream, new_state); | |
1da177e4 LT |
1361 | } |
1362 | } | |
1363 | return 0; | |
1364 | } | |
1365 | ||
877211f5 | 1366 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1367 | { |
1368 | } | |
1369 | ||
1370 | static struct action_ops snd_pcm_action_drain_init = { | |
1371 | .pre_action = snd_pcm_pre_drain_init, | |
1372 | .do_action = snd_pcm_do_drain_init, | |
1373 | .post_action = snd_pcm_post_drain_init | |
1374 | }; | |
1375 | ||
1376 | struct drain_rec { | |
877211f5 | 1377 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1378 | wait_queue_t wait; |
1379 | snd_pcm_uframes_t stop_threshold; | |
1380 | }; | |
1381 | ||
877211f5 | 1382 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
1da177e4 LT |
1383 | |
1384 | /* | |
1385 | * Drain the stream(s). | |
1386 | * When the substream is linked, sync until the draining of all playback streams | |
1387 | * is finished. | |
1388 | * After this call, all streams are supposed to be either SETUP or DRAINING | |
1389 | * (capture only) state. | |
1390 | */ | |
877211f5 | 1391 | static int snd_pcm_drain(struct snd_pcm_substream *substream) |
1da177e4 | 1392 | { |
877211f5 TI |
1393 | struct snd_card *card; |
1394 | struct snd_pcm_runtime *runtime; | |
ef991b95 | 1395 | struct snd_pcm_substream *s; |
1da177e4 LT |
1396 | int result = 0; |
1397 | int i, num_drecs; | |
1398 | struct drain_rec *drec, drec_tmp, *d; | |
1399 | ||
1da177e4 LT |
1400 | card = substream->pcm->card; |
1401 | runtime = substream->runtime; | |
1402 | ||
1403 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1404 | return -EBADFD; | |
1405 | ||
1da177e4 LT |
1406 | snd_power_lock(card); |
1407 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1408 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
21cb2a2e TI |
1409 | if (result < 0) { |
1410 | snd_power_unlock(card); | |
1411 | return result; | |
1412 | } | |
1da177e4 LT |
1413 | } |
1414 | ||
1415 | /* allocate temporary record for drain sync */ | |
21cb2a2e | 1416 | down_read(&snd_pcm_link_rwsem); |
1da177e4 LT |
1417 | if (snd_pcm_stream_linked(substream)) { |
1418 | drec = kmalloc(substream->group->count * sizeof(*drec), GFP_KERNEL); | |
1419 | if (! drec) { | |
21cb2a2e TI |
1420 | up_read(&snd_pcm_link_rwsem); |
1421 | snd_power_unlock(card); | |
1422 | return -ENOMEM; | |
1da177e4 LT |
1423 | } |
1424 | } else | |
1425 | drec = &drec_tmp; | |
1426 | ||
21cb2a2e | 1427 | /* count only playback streams */ |
1da177e4 | 1428 | num_drecs = 0; |
ef991b95 | 1429 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 1430 | runtime = s->runtime; |
1da177e4 LT |
1431 | if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1432 | d = &drec[num_drecs++]; | |
1433 | d->substream = s; | |
1434 | init_waitqueue_entry(&d->wait, current); | |
1435 | add_wait_queue(&runtime->sleep, &d->wait); | |
1436 | /* stop_threshold fixup to avoid endless loop when | |
1437 | * stop_threshold > buffer_size | |
1438 | */ | |
1439 | d->stop_threshold = runtime->stop_threshold; | |
1440 | if (runtime->stop_threshold > runtime->buffer_size) | |
1441 | runtime->stop_threshold = runtime->buffer_size; | |
1442 | } | |
1443 | } | |
21cb2a2e | 1444 | up_read(&snd_pcm_link_rwsem); |
21cb2a2e TI |
1445 | |
1446 | snd_pcm_stream_lock_irq(substream); | |
1447 | /* resume pause */ | |
1a7fa543 | 1448 | if (substream->runtime->status->state == SNDRV_PCM_STATE_PAUSED) |
21cb2a2e TI |
1449 | snd_pcm_pause(substream, 0); |
1450 | ||
1451 | /* pre-start/stop - all running streams are changed to DRAINING state */ | |
1452 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); | |
1453 | if (result < 0) { | |
1454 | snd_pcm_stream_unlock_irq(substream); | |
1455 | goto _error; | |
1456 | } | |
1da177e4 LT |
1457 | |
1458 | for (;;) { | |
1459 | long tout; | |
1460 | if (signal_pending(current)) { | |
1461 | result = -ERESTARTSYS; | |
1462 | break; | |
1463 | } | |
21cb2a2e TI |
1464 | /* all finished? */ |
1465 | for (i = 0; i < num_drecs; i++) { | |
1466 | runtime = drec[i].substream->runtime; | |
1467 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
1468 | break; | |
1469 | } | |
1470 | if (i == num_drecs) | |
1471 | break; /* yes, all drained */ | |
1472 | ||
1da177e4 LT |
1473 | set_current_state(TASK_INTERRUPTIBLE); |
1474 | snd_pcm_stream_unlock_irq(substream); | |
1475 | snd_power_unlock(card); | |
1476 | tout = schedule_timeout(10 * HZ); | |
1477 | snd_power_lock(card); | |
1478 | snd_pcm_stream_lock_irq(substream); | |
1479 | if (tout == 0) { | |
1480 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1481 | result = -ESTRPIPE; | |
1482 | else { | |
1483 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); | |
1484 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1485 | result = -EIO; | |
1486 | } | |
1487 | break; | |
1488 | } | |
1da177e4 | 1489 | } |
21cb2a2e TI |
1490 | |
1491 | snd_pcm_stream_unlock_irq(substream); | |
1492 | ||
1493 | _error: | |
1da177e4 LT |
1494 | for (i = 0; i < num_drecs; i++) { |
1495 | d = &drec[i]; | |
1496 | runtime = d->substream->runtime; | |
1497 | remove_wait_queue(&runtime->sleep, &d->wait); | |
1498 | runtime->stop_threshold = d->stop_threshold; | |
1499 | } | |
1500 | ||
1da177e4 LT |
1501 | if (drec != &drec_tmp) |
1502 | kfree(drec); | |
1da177e4 | 1503 | snd_power_unlock(card); |
1da177e4 LT |
1504 | |
1505 | return result; | |
1506 | } | |
1507 | ||
1508 | /* | |
1509 | * drop ioctl | |
1510 | * | |
1511 | * Immediately put all linked substreams into SETUP state. | |
1512 | */ | |
877211f5 | 1513 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
1da177e4 | 1514 | { |
877211f5 TI |
1515 | struct snd_pcm_runtime *runtime; |
1516 | struct snd_card *card; | |
1da177e4 LT |
1517 | int result = 0; |
1518 | ||
7eaa943c TI |
1519 | if (PCM_RUNTIME_CHECK(substream)) |
1520 | return -ENXIO; | |
1da177e4 LT |
1521 | runtime = substream->runtime; |
1522 | card = substream->pcm->card; | |
1523 | ||
de1b8b93 | 1524 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
24e8fc49 TI |
1525 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED || |
1526 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1da177e4 LT |
1527 | return -EBADFD; |
1528 | ||
1da177e4 LT |
1529 | snd_pcm_stream_lock_irq(substream); |
1530 | /* resume pause */ | |
1531 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1532 | snd_pcm_pause(substream, 0); | |
1533 | ||
1534 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1535 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ | |
1536 | snd_pcm_stream_unlock_irq(substream); | |
24e8fc49 | 1537 | |
1da177e4 LT |
1538 | return result; |
1539 | } | |
1540 | ||
1541 | ||
1542 | /* WARNING: Don't forget to fput back the file */ | |
1da177e4 LT |
1543 | static struct file *snd_pcm_file_fd(int fd) |
1544 | { | |
1545 | struct file *file; | |
1546 | struct inode *inode; | |
f87135f5 CL |
1547 | unsigned int minor; |
1548 | ||
1da177e4 LT |
1549 | file = fget(fd); |
1550 | if (!file) | |
1551 | return NULL; | |
7bc56323 | 1552 | inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
1553 | if (!S_ISCHR(inode->i_mode) || |
1554 | imajor(inode) != snd_major) { | |
1555 | fput(file); | |
1556 | return NULL; | |
1557 | } | |
1558 | minor = iminor(inode); | |
f87135f5 CL |
1559 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
1560 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { | |
1da177e4 LT |
1561 | fput(file); |
1562 | return NULL; | |
1563 | } | |
1564 | return file; | |
1565 | } | |
1566 | ||
1567 | /* | |
1568 | * PCM link handling | |
1569 | */ | |
877211f5 | 1570 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
1da177e4 LT |
1571 | { |
1572 | int res = 0; | |
1573 | struct file *file; | |
877211f5 TI |
1574 | struct snd_pcm_file *pcm_file; |
1575 | struct snd_pcm_substream *substream1; | |
1da177e4 LT |
1576 | |
1577 | file = snd_pcm_file_fd(fd); | |
1578 | if (!file) | |
1579 | return -EBADFD; | |
1580 | pcm_file = file->private_data; | |
1581 | substream1 = pcm_file->substream; | |
1582 | down_write(&snd_pcm_link_rwsem); | |
1583 | write_lock_irq(&snd_pcm_link_rwlock); | |
1584 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || | |
1585 | substream->runtime->status->state != substream1->runtime->status->state) { | |
1586 | res = -EBADFD; | |
1587 | goto _end; | |
1588 | } | |
1589 | if (snd_pcm_stream_linked(substream1)) { | |
1590 | res = -EALREADY; | |
1591 | goto _end; | |
1592 | } | |
1593 | if (!snd_pcm_stream_linked(substream)) { | |
877211f5 | 1594 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
1da177e4 LT |
1595 | if (substream->group == NULL) { |
1596 | res = -ENOMEM; | |
1597 | goto _end; | |
1598 | } | |
1599 | spin_lock_init(&substream->group->lock); | |
1600 | INIT_LIST_HEAD(&substream->group->substreams); | |
1601 | list_add_tail(&substream->link_list, &substream->group->substreams); | |
1602 | substream->group->count = 1; | |
1603 | } | |
1604 | list_add_tail(&substream1->link_list, &substream->group->substreams); | |
1605 | substream->group->count++; | |
1606 | substream1->group = substream->group; | |
1607 | _end: | |
1608 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1609 | up_write(&snd_pcm_link_rwsem); | |
1610 | fput(file); | |
1611 | return res; | |
1612 | } | |
1613 | ||
877211f5 | 1614 | static void relink_to_local(struct snd_pcm_substream *substream) |
1da177e4 LT |
1615 | { |
1616 | substream->group = &substream->self_group; | |
1617 | INIT_LIST_HEAD(&substream->self_group.substreams); | |
1618 | list_add_tail(&substream->link_list, &substream->self_group.substreams); | |
1619 | } | |
1620 | ||
877211f5 | 1621 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
1da177e4 | 1622 | { |
ef991b95 | 1623 | struct snd_pcm_substream *s; |
1da177e4 LT |
1624 | int res = 0; |
1625 | ||
1626 | down_write(&snd_pcm_link_rwsem); | |
1627 | write_lock_irq(&snd_pcm_link_rwlock); | |
1628 | if (!snd_pcm_stream_linked(substream)) { | |
1629 | res = -EALREADY; | |
1630 | goto _end; | |
1631 | } | |
1632 | list_del(&substream->link_list); | |
1633 | substream->group->count--; | |
1634 | if (substream->group->count == 1) { /* detach the last stream, too */ | |
ef991b95 TI |
1635 | snd_pcm_group_for_each_entry(s, substream) { |
1636 | relink_to_local(s); | |
1da177e4 LT |
1637 | break; |
1638 | } | |
1639 | kfree(substream->group); | |
1640 | } | |
1641 | relink_to_local(substream); | |
1642 | _end: | |
1643 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1644 | up_write(&snd_pcm_link_rwsem); | |
1645 | return res; | |
1646 | } | |
1647 | ||
1648 | /* | |
1649 | * hw configurator | |
1650 | */ | |
877211f5 TI |
1651 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
1652 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1653 | { |
877211f5 | 1654 | struct snd_interval t; |
1da177e4 LT |
1655 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
1656 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1657 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1658 | } | |
1659 | ||
877211f5 TI |
1660 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
1661 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1662 | { |
877211f5 | 1663 | struct snd_interval t; |
1da177e4 LT |
1664 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
1665 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1666 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1667 | } | |
1668 | ||
877211f5 TI |
1669 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
1670 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1671 | { |
877211f5 | 1672 | struct snd_interval t; |
1da177e4 LT |
1673 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
1674 | hw_param_interval_c(params, rule->deps[1]), | |
1675 | (unsigned long) rule->private, &t); | |
1676 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1677 | } | |
1678 | ||
877211f5 TI |
1679 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
1680 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1681 | { |
877211f5 | 1682 | struct snd_interval t; |
1da177e4 LT |
1683 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
1684 | (unsigned long) rule->private, | |
1685 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1686 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1687 | } | |
1688 | ||
877211f5 TI |
1689 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
1690 | struct snd_pcm_hw_rule *rule) | |
1da177e4 LT |
1691 | { |
1692 | unsigned int k; | |
877211f5 TI |
1693 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
1694 | struct snd_mask m; | |
1695 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1696 | snd_mask_any(&m); |
1697 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1698 | int bits; | |
1699 | if (! snd_mask_test(mask, k)) | |
1700 | continue; | |
1701 | bits = snd_pcm_format_physical_width(k); | |
1702 | if (bits <= 0) | |
1703 | continue; /* ignore invalid formats */ | |
1704 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) | |
1705 | snd_mask_reset(&m, k); | |
1706 | } | |
1707 | return snd_mask_refine(mask, &m); | |
1708 | } | |
1709 | ||
877211f5 TI |
1710 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
1711 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1712 | { |
877211f5 | 1713 | struct snd_interval t; |
1da177e4 LT |
1714 | unsigned int k; |
1715 | t.min = UINT_MAX; | |
1716 | t.max = 0; | |
1717 | t.openmin = 0; | |
1718 | t.openmax = 0; | |
1719 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1720 | int bits; | |
1721 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) | |
1722 | continue; | |
1723 | bits = snd_pcm_format_physical_width(k); | |
1724 | if (bits <= 0) | |
1725 | continue; /* ignore invalid formats */ | |
1726 | if (t.min > (unsigned)bits) | |
1727 | t.min = bits; | |
1728 | if (t.max < (unsigned)bits) | |
1729 | t.max = bits; | |
1730 | } | |
1731 | t.integer = 1; | |
1732 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1733 | } | |
1734 | ||
1735 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 | |
1736 | #error "Change this table" | |
1737 | #endif | |
1738 | ||
1739 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
1740 | 48000, 64000, 88200, 96000, 176400, 192000 }; | |
1741 | ||
7653d557 CL |
1742 | const struct snd_pcm_hw_constraint_list snd_pcm_known_rates = { |
1743 | .count = ARRAY_SIZE(rates), | |
1744 | .list = rates, | |
1745 | }; | |
1746 | ||
877211f5 TI |
1747 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
1748 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1749 | { |
877211f5 | 1750 | struct snd_pcm_hardware *hw = rule->private; |
1da177e4 | 1751 | return snd_interval_list(hw_param_interval(params, rule->var), |
7653d557 CL |
1752 | snd_pcm_known_rates.count, |
1753 | snd_pcm_known_rates.list, hw->rates); | |
1da177e4 LT |
1754 | } |
1755 | ||
877211f5 TI |
1756 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
1757 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1758 | { |
877211f5 TI |
1759 | struct snd_interval t; |
1760 | struct snd_pcm_substream *substream = rule->private; | |
1da177e4 LT |
1761 | t.min = 0; |
1762 | t.max = substream->buffer_bytes_max; | |
1763 | t.openmin = 0; | |
1764 | t.openmax = 0; | |
1765 | t.integer = 1; | |
1766 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1767 | } | |
1768 | ||
877211f5 | 1769 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
1da177e4 | 1770 | { |
877211f5 TI |
1771 | struct snd_pcm_runtime *runtime = substream->runtime; |
1772 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; | |
1da177e4 LT |
1773 | int k, err; |
1774 | ||
1775 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
1776 | snd_mask_any(constrs_mask(constrs, k)); | |
1777 | } | |
1778 | ||
1779 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
1780 | snd_interval_any(constrs_interval(constrs, k)); | |
1781 | } | |
1782 | ||
1783 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); | |
1784 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); | |
1785 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); | |
1786 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); | |
1787 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); | |
1788 | ||
1789 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1790 | snd_pcm_hw_rule_format, NULL, | |
1791 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1792 | if (err < 0) | |
1793 | return err; | |
1794 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1795 | snd_pcm_hw_rule_sample_bits, NULL, | |
1796 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1797 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1798 | if (err < 0) | |
1799 | return err; | |
1800 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1801 | snd_pcm_hw_rule_div, NULL, | |
1802 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1803 | if (err < 0) | |
1804 | return err; | |
1805 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1806 | snd_pcm_hw_rule_mul, NULL, | |
1807 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1808 | if (err < 0) | |
1809 | return err; | |
1810 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1811 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1812 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1813 | if (err < 0) | |
1814 | return err; | |
1815 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1816 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1817 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
1818 | if (err < 0) | |
1819 | return err; | |
1820 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1821 | snd_pcm_hw_rule_div, NULL, | |
1822 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1823 | if (err < 0) | |
1824 | return err; | |
1825 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1826 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1827 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); | |
1828 | if (err < 0) | |
1829 | return err; | |
1830 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1831 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1832 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); | |
1833 | if (err < 0) | |
1834 | return err; | |
1835 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1836 | snd_pcm_hw_rule_div, NULL, | |
1837 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1838 | if (err < 0) | |
1839 | return err; | |
1840 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1841 | snd_pcm_hw_rule_div, NULL, | |
1842 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1843 | if (err < 0) | |
1844 | return err; | |
1845 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1846 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1847 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1848 | if (err < 0) | |
1849 | return err; | |
1850 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1851 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1852 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1853 | if (err < 0) | |
1854 | return err; | |
1855 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1856 | snd_pcm_hw_rule_mul, NULL, | |
1857 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1858 | if (err < 0) | |
1859 | return err; | |
1860 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1861 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1862 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1863 | if (err < 0) | |
1864 | return err; | |
1865 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1866 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1867 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1868 | if (err < 0) | |
1869 | return err; | |
1870 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1871 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1872 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1873 | if (err < 0) | |
1874 | return err; | |
1875 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1876 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1877 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1878 | if (err < 0) | |
1879 | return err; | |
1880 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1881 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1882 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1883 | if (err < 0) | |
1884 | return err; | |
1885 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, | |
1886 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1887 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1888 | if (err < 0) | |
1889 | return err; | |
1890 | return 0; | |
1891 | } | |
1892 | ||
877211f5 | 1893 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
1da177e4 | 1894 | { |
877211f5 TI |
1895 | struct snd_pcm_runtime *runtime = substream->runtime; |
1896 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1da177e4 LT |
1897 | int err; |
1898 | unsigned int mask = 0; | |
1899 | ||
1900 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1901 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; | |
1902 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1903 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; | |
1904 | if (hw->info & SNDRV_PCM_INFO_MMAP) { | |
1905 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1906 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
1907 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1908 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; | |
1909 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) | |
1910 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; | |
1911 | } | |
1912 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); | |
7eaa943c TI |
1913 | if (err < 0) |
1914 | return err; | |
1da177e4 LT |
1915 | |
1916 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); | |
7eaa943c TI |
1917 | if (err < 0) |
1918 | return err; | |
1da177e4 LT |
1919 | |
1920 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); | |
7eaa943c TI |
1921 | if (err < 0) |
1922 | return err; | |
1da177e4 LT |
1923 | |
1924 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1925 | hw->channels_min, hw->channels_max); | |
7eaa943c TI |
1926 | if (err < 0) |
1927 | return err; | |
1da177e4 LT |
1928 | |
1929 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, | |
1930 | hw->rate_min, hw->rate_max); | |
7eaa943c TI |
1931 | if (err < 0) |
1932 | return err; | |
1da177e4 LT |
1933 | |
1934 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1935 | hw->period_bytes_min, hw->period_bytes_max); | |
7eaa943c TI |
1936 | if (err < 0) |
1937 | return err; | |
1da177e4 LT |
1938 | |
1939 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, | |
1940 | hw->periods_min, hw->periods_max); | |
7eaa943c TI |
1941 | if (err < 0) |
1942 | return err; | |
1da177e4 LT |
1943 | |
1944 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1945 | hw->period_bytes_min, hw->buffer_bytes_max); | |
7eaa943c TI |
1946 | if (err < 0) |
1947 | return err; | |
1da177e4 LT |
1948 | |
1949 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1950 | snd_pcm_hw_rule_buffer_bytes_max, substream, | |
1951 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); | |
1952 | if (err < 0) | |
1953 | return err; | |
1954 | ||
1955 | /* FIXME: remove */ | |
1956 | if (runtime->dma_bytes) { | |
1957 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); | |
7eaa943c TI |
1958 | if (err < 0) |
1959 | return -EINVAL; | |
1da177e4 LT |
1960 | } |
1961 | ||
1962 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { | |
1963 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1964 | snd_pcm_hw_rule_rate, hw, | |
1965 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
1966 | if (err < 0) | |
1967 | return err; | |
1968 | } | |
1969 | ||
1970 | /* FIXME: this belong to lowlevel */ | |
1da177e4 LT |
1971 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); |
1972 | ||
1973 | return 0; | |
1974 | } | |
1975 | ||
3bf75f9b | 1976 | static void pcm_release_private(struct snd_pcm_substream *substream) |
1da177e4 | 1977 | { |
1da177e4 | 1978 | snd_pcm_unlink(substream); |
3bf75f9b TI |
1979 | } |
1980 | ||
1981 | void snd_pcm_release_substream(struct snd_pcm_substream *substream) | |
1982 | { | |
0df63e44 TI |
1983 | substream->ref_count--; |
1984 | if (substream->ref_count > 0) | |
1985 | return; | |
1986 | ||
3bf75f9b | 1987 | snd_pcm_drop(substream); |
3bf75f9b | 1988 | if (substream->hw_opened) { |
1da177e4 LT |
1989 | if (substream->ops->hw_free != NULL) |
1990 | substream->ops->hw_free(substream); | |
1991 | substream->ops->close(substream); | |
3bf75f9b | 1992 | substream->hw_opened = 0; |
1da177e4 | 1993 | } |
1576274d TI |
1994 | if (substream->pcm_release) { |
1995 | substream->pcm_release(substream); | |
1996 | substream->pcm_release = NULL; | |
1997 | } | |
3bf75f9b TI |
1998 | snd_pcm_detach_substream(substream); |
1999 | } | |
2000 | ||
e88e8ae6 TI |
2001 | EXPORT_SYMBOL(snd_pcm_release_substream); |
2002 | ||
3bf75f9b TI |
2003 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, |
2004 | struct file *file, | |
2005 | struct snd_pcm_substream **rsubstream) | |
2006 | { | |
2007 | struct snd_pcm_substream *substream; | |
2008 | int err; | |
2009 | ||
2010 | err = snd_pcm_attach_substream(pcm, stream, file, &substream); | |
2011 | if (err < 0) | |
2012 | return err; | |
0df63e44 TI |
2013 | if (substream->ref_count > 1) { |
2014 | *rsubstream = substream; | |
2015 | return 0; | |
2016 | } | |
2017 | ||
3bf75f9b TI |
2018 | err = snd_pcm_hw_constraints_init(substream); |
2019 | if (err < 0) { | |
2020 | snd_printd("snd_pcm_hw_constraints_init failed\n"); | |
2021 | goto error; | |
2022 | } | |
2023 | ||
2024 | if ((err = substream->ops->open(substream)) < 0) | |
2025 | goto error; | |
2026 | ||
2027 | substream->hw_opened = 1; | |
2028 | ||
2029 | err = snd_pcm_hw_constraints_complete(substream); | |
2030 | if (err < 0) { | |
2031 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); | |
2032 | goto error; | |
2033 | } | |
2034 | ||
2035 | *rsubstream = substream; | |
1da177e4 | 2036 | return 0; |
3bf75f9b TI |
2037 | |
2038 | error: | |
2039 | snd_pcm_release_substream(substream); | |
2040 | return err; | |
1da177e4 LT |
2041 | } |
2042 | ||
e88e8ae6 TI |
2043 | EXPORT_SYMBOL(snd_pcm_open_substream); |
2044 | ||
1da177e4 | 2045 | static int snd_pcm_open_file(struct file *file, |
877211f5 | 2046 | struct snd_pcm *pcm, |
1da177e4 | 2047 | int stream, |
877211f5 | 2048 | struct snd_pcm_file **rpcm_file) |
1da177e4 | 2049 | { |
877211f5 TI |
2050 | struct snd_pcm_file *pcm_file; |
2051 | struct snd_pcm_substream *substream; | |
2052 | struct snd_pcm_str *str; | |
3bf75f9b | 2053 | int err; |
1da177e4 | 2054 | |
7eaa943c TI |
2055 | if (rpcm_file) |
2056 | *rpcm_file = NULL; | |
1da177e4 | 2057 | |
3bf75f9b TI |
2058 | err = snd_pcm_open_substream(pcm, stream, file, &substream); |
2059 | if (err < 0) | |
2060 | return err; | |
2061 | ||
548a648b TI |
2062 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
2063 | if (pcm_file == NULL) { | |
2064 | snd_pcm_release_substream(substream); | |
2065 | return -ENOMEM; | |
2066 | } | |
2067 | pcm_file->substream = substream; | |
2068 | if (substream->ref_count == 1) { | |
0df63e44 TI |
2069 | str = substream->pstr; |
2070 | substream->file = pcm_file; | |
2071 | substream->pcm_release = pcm_release_private; | |
1da177e4 | 2072 | } |
1da177e4 | 2073 | file->private_data = pcm_file; |
7eaa943c TI |
2074 | if (rpcm_file) |
2075 | *rpcm_file = pcm_file; | |
1da177e4 LT |
2076 | return 0; |
2077 | } | |
2078 | ||
f87135f5 CL |
2079 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
2080 | { | |
2081 | struct snd_pcm *pcm; | |
2082 | ||
2083 | pcm = snd_lookup_minor_data(iminor(inode), | |
2084 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); | |
2085 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); | |
2086 | } | |
2087 | ||
2088 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) | |
1da177e4 | 2089 | { |
877211f5 | 2090 | struct snd_pcm *pcm; |
f87135f5 CL |
2091 | |
2092 | pcm = snd_lookup_minor_data(iminor(inode), | |
2093 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); | |
2094 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); | |
2095 | } | |
2096 | ||
2097 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) | |
2098 | { | |
2099 | int err; | |
877211f5 | 2100 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2101 | wait_queue_t wait; |
2102 | ||
1da177e4 LT |
2103 | if (pcm == NULL) { |
2104 | err = -ENODEV; | |
2105 | goto __error1; | |
2106 | } | |
2107 | err = snd_card_file_add(pcm->card, file); | |
2108 | if (err < 0) | |
2109 | goto __error1; | |
2110 | if (!try_module_get(pcm->card->module)) { | |
2111 | err = -EFAULT; | |
2112 | goto __error2; | |
2113 | } | |
2114 | init_waitqueue_entry(&wait, current); | |
2115 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2116 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2117 | while (1) { |
f87135f5 | 2118 | err = snd_pcm_open_file(file, pcm, stream, &pcm_file); |
1da177e4 LT |
2119 | if (err >= 0) |
2120 | break; | |
2121 | if (err == -EAGAIN) { | |
2122 | if (file->f_flags & O_NONBLOCK) { | |
2123 | err = -EBUSY; | |
2124 | break; | |
2125 | } | |
2126 | } else | |
2127 | break; | |
2128 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2129 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2130 | schedule(); |
1a60d4c5 | 2131 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2132 | if (signal_pending(current)) { |
2133 | err = -ERESTARTSYS; | |
2134 | break; | |
2135 | } | |
2136 | } | |
2137 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2138 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2139 | if (err < 0) |
2140 | goto __error; | |
2141 | return err; | |
2142 | ||
2143 | __error: | |
2144 | module_put(pcm->card->module); | |
2145 | __error2: | |
2146 | snd_card_file_remove(pcm->card, file); | |
2147 | __error1: | |
2148 | return err; | |
2149 | } | |
2150 | ||
2151 | static int snd_pcm_release(struct inode *inode, struct file *file) | |
2152 | { | |
877211f5 TI |
2153 | struct snd_pcm *pcm; |
2154 | struct snd_pcm_substream *substream; | |
2155 | struct snd_pcm_file *pcm_file; | |
1da177e4 LT |
2156 | |
2157 | pcm_file = file->private_data; | |
2158 | substream = pcm_file->substream; | |
7eaa943c TI |
2159 | if (snd_BUG_ON(!substream)) |
2160 | return -ENXIO; | |
1da177e4 | 2161 | pcm = substream->pcm; |
1a60d4c5 | 2162 | mutex_lock(&pcm->open_mutex); |
3bf75f9b | 2163 | snd_pcm_release_substream(substream); |
548a648b | 2164 | kfree(pcm_file); |
1a60d4c5 | 2165 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2166 | wake_up(&pcm->open_wait); |
2167 | module_put(pcm->card->module); | |
2168 | snd_card_file_remove(pcm->card, file); | |
2169 | return 0; | |
2170 | } | |
2171 | ||
877211f5 TI |
2172 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
2173 | snd_pcm_uframes_t frames) | |
1da177e4 | 2174 | { |
877211f5 | 2175 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2176 | snd_pcm_sframes_t appl_ptr; |
2177 | snd_pcm_sframes_t ret; | |
2178 | snd_pcm_sframes_t hw_avail; | |
2179 | ||
2180 | if (frames == 0) | |
2181 | return 0; | |
2182 | ||
2183 | snd_pcm_stream_lock_irq(substream); | |
2184 | switch (runtime->status->state) { | |
2185 | case SNDRV_PCM_STATE_PREPARED: | |
2186 | break; | |
2187 | case SNDRV_PCM_STATE_DRAINING: | |
2188 | case SNDRV_PCM_STATE_RUNNING: | |
2189 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2190 | break; | |
2191 | /* Fall through */ | |
2192 | case SNDRV_PCM_STATE_XRUN: | |
2193 | ret = -EPIPE; | |
2194 | goto __end; | |
2195 | default: | |
2196 | ret = -EBADFD; | |
2197 | goto __end; | |
2198 | } | |
2199 | ||
2200 | hw_avail = snd_pcm_playback_hw_avail(runtime); | |
2201 | if (hw_avail <= 0) { | |
2202 | ret = 0; | |
2203 | goto __end; | |
2204 | } | |
2205 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2206 | frames = hw_avail; | |
1da177e4 LT |
2207 | appl_ptr = runtime->control->appl_ptr - frames; |
2208 | if (appl_ptr < 0) | |
2209 | appl_ptr += runtime->boundary; | |
2210 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2211 | ret = frames; |
2212 | __end: | |
2213 | snd_pcm_stream_unlock_irq(substream); | |
2214 | return ret; | |
2215 | } | |
2216 | ||
877211f5 TI |
2217 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
2218 | snd_pcm_uframes_t frames) | |
1da177e4 | 2219 | { |
877211f5 | 2220 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2221 | snd_pcm_sframes_t appl_ptr; |
2222 | snd_pcm_sframes_t ret; | |
2223 | snd_pcm_sframes_t hw_avail; | |
2224 | ||
2225 | if (frames == 0) | |
2226 | return 0; | |
2227 | ||
2228 | snd_pcm_stream_lock_irq(substream); | |
2229 | switch (runtime->status->state) { | |
2230 | case SNDRV_PCM_STATE_PREPARED: | |
2231 | case SNDRV_PCM_STATE_DRAINING: | |
2232 | break; | |
2233 | case SNDRV_PCM_STATE_RUNNING: | |
2234 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2235 | break; | |
2236 | /* Fall through */ | |
2237 | case SNDRV_PCM_STATE_XRUN: | |
2238 | ret = -EPIPE; | |
2239 | goto __end; | |
2240 | default: | |
2241 | ret = -EBADFD; | |
2242 | goto __end; | |
2243 | } | |
2244 | ||
2245 | hw_avail = snd_pcm_capture_hw_avail(runtime); | |
2246 | if (hw_avail <= 0) { | |
2247 | ret = 0; | |
2248 | goto __end; | |
2249 | } | |
2250 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2251 | frames = hw_avail; | |
1da177e4 LT |
2252 | appl_ptr = runtime->control->appl_ptr - frames; |
2253 | if (appl_ptr < 0) | |
2254 | appl_ptr += runtime->boundary; | |
2255 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2256 | ret = frames; |
2257 | __end: | |
2258 | snd_pcm_stream_unlock_irq(substream); | |
2259 | return ret; | |
2260 | } | |
2261 | ||
877211f5 TI |
2262 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
2263 | snd_pcm_uframes_t frames) | |
1da177e4 | 2264 | { |
877211f5 | 2265 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2266 | snd_pcm_sframes_t appl_ptr; |
2267 | snd_pcm_sframes_t ret; | |
2268 | snd_pcm_sframes_t avail; | |
2269 | ||
2270 | if (frames == 0) | |
2271 | return 0; | |
2272 | ||
2273 | snd_pcm_stream_lock_irq(substream); | |
2274 | switch (runtime->status->state) { | |
2275 | case SNDRV_PCM_STATE_PREPARED: | |
2276 | case SNDRV_PCM_STATE_PAUSED: | |
2277 | break; | |
2278 | case SNDRV_PCM_STATE_DRAINING: | |
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 | avail = snd_pcm_playback_avail(runtime); | |
2292 | if (avail <= 0) { | |
2293 | ret = 0; | |
2294 | goto __end; | |
2295 | } | |
2296 | if (frames > (snd_pcm_uframes_t)avail) | |
2297 | frames = avail; | |
1da177e4 LT |
2298 | appl_ptr = runtime->control->appl_ptr + frames; |
2299 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2300 | appl_ptr -= runtime->boundary; | |
2301 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2302 | ret = frames; |
2303 | __end: | |
2304 | snd_pcm_stream_unlock_irq(substream); | |
2305 | return ret; | |
2306 | } | |
2307 | ||
877211f5 TI |
2308 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
2309 | snd_pcm_uframes_t frames) | |
1da177e4 | 2310 | { |
877211f5 | 2311 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2312 | snd_pcm_sframes_t appl_ptr; |
2313 | snd_pcm_sframes_t ret; | |
2314 | snd_pcm_sframes_t avail; | |
2315 | ||
2316 | if (frames == 0) | |
2317 | return 0; | |
2318 | ||
2319 | snd_pcm_stream_lock_irq(substream); | |
2320 | switch (runtime->status->state) { | |
2321 | case SNDRV_PCM_STATE_PREPARED: | |
2322 | case SNDRV_PCM_STATE_DRAINING: | |
2323 | case SNDRV_PCM_STATE_PAUSED: | |
2324 | break; | |
2325 | case SNDRV_PCM_STATE_RUNNING: | |
2326 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2327 | break; | |
2328 | /* Fall through */ | |
2329 | case SNDRV_PCM_STATE_XRUN: | |
2330 | ret = -EPIPE; | |
2331 | goto __end; | |
2332 | default: | |
2333 | ret = -EBADFD; | |
2334 | goto __end; | |
2335 | } | |
2336 | ||
2337 | avail = snd_pcm_capture_avail(runtime); | |
2338 | if (avail <= 0) { | |
2339 | ret = 0; | |
2340 | goto __end; | |
2341 | } | |
2342 | if (frames > (snd_pcm_uframes_t)avail) | |
2343 | frames = avail; | |
1da177e4 LT |
2344 | appl_ptr = runtime->control->appl_ptr + frames; |
2345 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2346 | appl_ptr -= runtime->boundary; | |
2347 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2348 | ret = frames; |
2349 | __end: | |
2350 | snd_pcm_stream_unlock_irq(substream); | |
2351 | return ret; | |
2352 | } | |
2353 | ||
877211f5 | 2354 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
1da177e4 | 2355 | { |
877211f5 | 2356 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2357 | int err; |
2358 | ||
2359 | snd_pcm_stream_lock_irq(substream); | |
2360 | switch (runtime->status->state) { | |
2361 | case SNDRV_PCM_STATE_DRAINING: | |
2362 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2363 | goto __badfd; | |
2364 | case SNDRV_PCM_STATE_RUNNING: | |
2365 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2366 | break; | |
2367 | /* Fall through */ | |
2368 | case SNDRV_PCM_STATE_PREPARED: | |
2369 | case SNDRV_PCM_STATE_SUSPENDED: | |
2370 | err = 0; | |
2371 | break; | |
2372 | case SNDRV_PCM_STATE_XRUN: | |
2373 | err = -EPIPE; | |
2374 | break; | |
2375 | default: | |
2376 | __badfd: | |
2377 | err = -EBADFD; | |
2378 | break; | |
2379 | } | |
2380 | snd_pcm_stream_unlock_irq(substream); | |
2381 | return err; | |
2382 | } | |
2383 | ||
877211f5 TI |
2384 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
2385 | snd_pcm_sframes_t __user *res) | |
1da177e4 | 2386 | { |
877211f5 | 2387 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2388 | int err; |
2389 | snd_pcm_sframes_t n = 0; | |
2390 | ||
2391 | snd_pcm_stream_lock_irq(substream); | |
2392 | switch (runtime->status->state) { | |
2393 | case SNDRV_PCM_STATE_DRAINING: | |
2394 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2395 | goto __badfd; | |
2396 | case SNDRV_PCM_STATE_RUNNING: | |
2397 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2398 | break; | |
2399 | /* Fall through */ | |
2400 | case SNDRV_PCM_STATE_PREPARED: | |
2401 | case SNDRV_PCM_STATE_SUSPENDED: | |
2402 | err = 0; | |
2403 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2404 | n = snd_pcm_playback_hw_avail(runtime); | |
2405 | else | |
2406 | n = snd_pcm_capture_avail(runtime); | |
2407 | break; | |
2408 | case SNDRV_PCM_STATE_XRUN: | |
2409 | err = -EPIPE; | |
2410 | break; | |
2411 | default: | |
2412 | __badfd: | |
2413 | err = -EBADFD; | |
2414 | break; | |
2415 | } | |
2416 | snd_pcm_stream_unlock_irq(substream); | |
2417 | if (!err) | |
2418 | if (put_user(n, res)) | |
2419 | err = -EFAULT; | |
2420 | return err; | |
2421 | } | |
2422 | ||
877211f5 TI |
2423 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
2424 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
1da177e4 | 2425 | { |
877211f5 TI |
2426 | struct snd_pcm_runtime *runtime = substream->runtime; |
2427 | struct snd_pcm_sync_ptr sync_ptr; | |
2428 | volatile struct snd_pcm_mmap_status *status; | |
2429 | volatile struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
2430 | int err; |
2431 | ||
2432 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
2433 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
2434 | return -EFAULT; | |
877211f5 | 2435 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
2436 | return -EFAULT; |
2437 | status = runtime->status; | |
2438 | control = runtime->control; | |
2439 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
2440 | err = snd_pcm_hwsync(substream); | |
2441 | if (err < 0) | |
2442 | return err; | |
2443 | } | |
2444 | snd_pcm_stream_lock_irq(substream); | |
2445 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) | |
2446 | control->appl_ptr = sync_ptr.c.control.appl_ptr; | |
2447 | else | |
2448 | sync_ptr.c.control.appl_ptr = control->appl_ptr; | |
2449 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
2450 | control->avail_min = sync_ptr.c.control.avail_min; | |
2451 | else | |
2452 | sync_ptr.c.control.avail_min = control->avail_min; | |
2453 | sync_ptr.s.status.state = status->state; | |
2454 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
2455 | sync_ptr.s.status.tstamp = status->tstamp; | |
2456 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
2457 | snd_pcm_stream_unlock_irq(substream); | |
2458 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) | |
2459 | return -EFAULT; | |
2460 | return 0; | |
2461 | } | |
b751eef1 JK |
2462 | |
2463 | static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg) | |
2464 | { | |
2465 | struct snd_pcm_runtime *runtime = substream->runtime; | |
2466 | int arg; | |
2467 | ||
2468 | if (get_user(arg, _arg)) | |
2469 | return -EFAULT; | |
2470 | if (arg < 0 || arg > SNDRV_PCM_TSTAMP_TYPE_LAST) | |
2471 | return -EINVAL; | |
2472 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY; | |
2473 | if (arg == SNDRV_PCM_TSTAMP_TYPE_MONOTONIC) | |
2474 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC; | |
2475 | return 0; | |
2476 | } | |
1da177e4 | 2477 | |
0df63e44 TI |
2478 | static int snd_pcm_common_ioctl1(struct file *file, |
2479 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2480 | unsigned int cmd, void __user *arg) |
2481 | { | |
1da177e4 LT |
2482 | switch (cmd) { |
2483 | case SNDRV_PCM_IOCTL_PVERSION: | |
2484 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; | |
2485 | case SNDRV_PCM_IOCTL_INFO: | |
2486 | return snd_pcm_info_user(substream, arg); | |
28e9e473 JK |
2487 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
2488 | return 0; | |
b751eef1 JK |
2489 | case SNDRV_PCM_IOCTL_TTSTAMP: |
2490 | return snd_pcm_tstamp(substream, arg); | |
1da177e4 LT |
2491 | case SNDRV_PCM_IOCTL_HW_REFINE: |
2492 | return snd_pcm_hw_refine_user(substream, arg); | |
2493 | case SNDRV_PCM_IOCTL_HW_PARAMS: | |
2494 | return snd_pcm_hw_params_user(substream, arg); | |
2495 | case SNDRV_PCM_IOCTL_HW_FREE: | |
2496 | return snd_pcm_hw_free(substream); | |
2497 | case SNDRV_PCM_IOCTL_SW_PARAMS: | |
2498 | return snd_pcm_sw_params_user(substream, arg); | |
2499 | case SNDRV_PCM_IOCTL_STATUS: | |
2500 | return snd_pcm_status_user(substream, arg); | |
2501 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: | |
2502 | return snd_pcm_channel_info_user(substream, arg); | |
2503 | case SNDRV_PCM_IOCTL_PREPARE: | |
0df63e44 | 2504 | return snd_pcm_prepare(substream, file); |
1da177e4 LT |
2505 | case SNDRV_PCM_IOCTL_RESET: |
2506 | return snd_pcm_reset(substream); | |
2507 | case SNDRV_PCM_IOCTL_START: | |
2508 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); | |
2509 | case SNDRV_PCM_IOCTL_LINK: | |
2510 | return snd_pcm_link(substream, (int)(unsigned long) arg); | |
2511 | case SNDRV_PCM_IOCTL_UNLINK: | |
2512 | return snd_pcm_unlink(substream); | |
2513 | case SNDRV_PCM_IOCTL_RESUME: | |
2514 | return snd_pcm_resume(substream); | |
2515 | case SNDRV_PCM_IOCTL_XRUN: | |
2516 | return snd_pcm_xrun(substream); | |
2517 | case SNDRV_PCM_IOCTL_HWSYNC: | |
2518 | return snd_pcm_hwsync(substream); | |
2519 | case SNDRV_PCM_IOCTL_DELAY: | |
2520 | return snd_pcm_delay(substream, arg); | |
2521 | case SNDRV_PCM_IOCTL_SYNC_PTR: | |
2522 | return snd_pcm_sync_ptr(substream, arg); | |
59d48582 | 2523 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
2524 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
2525 | return snd_pcm_hw_refine_old_user(substream, arg); | |
2526 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: | |
2527 | return snd_pcm_hw_params_old_user(substream, arg); | |
59d48582 | 2528 | #endif |
1da177e4 LT |
2529 | case SNDRV_PCM_IOCTL_DRAIN: |
2530 | return snd_pcm_drain(substream); | |
2531 | case SNDRV_PCM_IOCTL_DROP: | |
2532 | return snd_pcm_drop(substream); | |
e661d0dd TI |
2533 | case SNDRV_PCM_IOCTL_PAUSE: |
2534 | { | |
2535 | int res; | |
2536 | snd_pcm_stream_lock_irq(substream); | |
2537 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); | |
2538 | snd_pcm_stream_unlock_irq(substream); | |
2539 | return res; | |
2540 | } | |
1da177e4 LT |
2541 | } |
2542 | snd_printd("unknown ioctl = 0x%x\n", cmd); | |
2543 | return -ENOTTY; | |
2544 | } | |
2545 | ||
0df63e44 TI |
2546 | static int snd_pcm_playback_ioctl1(struct file *file, |
2547 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2548 | unsigned int cmd, void __user *arg) |
2549 | { | |
7eaa943c TI |
2550 | if (snd_BUG_ON(!substream)) |
2551 | return -ENXIO; | |
2552 | if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
2553 | return -EINVAL; | |
1da177e4 LT |
2554 | switch (cmd) { |
2555 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: | |
2556 | { | |
877211f5 TI |
2557 | struct snd_xferi xferi; |
2558 | struct snd_xferi __user *_xferi = arg; | |
2559 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2560 | snd_pcm_sframes_t result; |
2561 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2562 | return -EBADFD; | |
2563 | if (put_user(0, &_xferi->result)) | |
2564 | return -EFAULT; | |
2565 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2566 | return -EFAULT; | |
2567 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); | |
2568 | __put_user(result, &_xferi->result); | |
2569 | return result < 0 ? result : 0; | |
2570 | } | |
2571 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: | |
2572 | { | |
877211f5 TI |
2573 | struct snd_xfern xfern; |
2574 | struct snd_xfern __user *_xfern = arg; | |
2575 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2576 | void __user **bufs; |
2577 | snd_pcm_sframes_t result; | |
2578 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2579 | return -EBADFD; | |
2580 | if (runtime->channels > 128) | |
2581 | return -EINVAL; | |
2582 | if (put_user(0, &_xfern->result)) | |
2583 | return -EFAULT; | |
2584 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2585 | return -EFAULT; | |
ef44a1ec LZ |
2586 | |
2587 | bufs = memdup_user(xfern.bufs, | |
2588 | sizeof(void *) * runtime->channels); | |
2589 | if (IS_ERR(bufs)) | |
2590 | return PTR_ERR(bufs); | |
1da177e4 LT |
2591 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); |
2592 | kfree(bufs); | |
2593 | __put_user(result, &_xfern->result); | |
2594 | return result < 0 ? result : 0; | |
2595 | } | |
2596 | case SNDRV_PCM_IOCTL_REWIND: | |
2597 | { | |
2598 | snd_pcm_uframes_t frames; | |
2599 | snd_pcm_uframes_t __user *_frames = arg; | |
2600 | snd_pcm_sframes_t result; | |
2601 | if (get_user(frames, _frames)) | |
2602 | return -EFAULT; | |
2603 | if (put_user(0, _frames)) | |
2604 | return -EFAULT; | |
2605 | result = snd_pcm_playback_rewind(substream, frames); | |
2606 | __put_user(result, _frames); | |
2607 | return result < 0 ? result : 0; | |
2608 | } | |
2609 | case SNDRV_PCM_IOCTL_FORWARD: | |
2610 | { | |
2611 | snd_pcm_uframes_t frames; | |
2612 | snd_pcm_uframes_t __user *_frames = arg; | |
2613 | snd_pcm_sframes_t result; | |
2614 | if (get_user(frames, _frames)) | |
2615 | return -EFAULT; | |
2616 | if (put_user(0, _frames)) | |
2617 | return -EFAULT; | |
2618 | result = snd_pcm_playback_forward(substream, frames); | |
2619 | __put_user(result, _frames); | |
2620 | return result < 0 ? result : 0; | |
2621 | } | |
1da177e4 | 2622 | } |
0df63e44 | 2623 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2624 | } |
2625 | ||
0df63e44 TI |
2626 | static int snd_pcm_capture_ioctl1(struct file *file, |
2627 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2628 | unsigned int cmd, void __user *arg) |
2629 | { | |
7eaa943c TI |
2630 | if (snd_BUG_ON(!substream)) |
2631 | return -ENXIO; | |
2632 | if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_CAPTURE)) | |
2633 | return -EINVAL; | |
1da177e4 LT |
2634 | switch (cmd) { |
2635 | case SNDRV_PCM_IOCTL_READI_FRAMES: | |
2636 | { | |
877211f5 TI |
2637 | struct snd_xferi xferi; |
2638 | struct snd_xferi __user *_xferi = arg; | |
2639 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2640 | snd_pcm_sframes_t result; |
2641 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2642 | return -EBADFD; | |
2643 | if (put_user(0, &_xferi->result)) | |
2644 | return -EFAULT; | |
2645 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2646 | return -EFAULT; | |
2647 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); | |
2648 | __put_user(result, &_xferi->result); | |
2649 | return result < 0 ? result : 0; | |
2650 | } | |
2651 | case SNDRV_PCM_IOCTL_READN_FRAMES: | |
2652 | { | |
877211f5 TI |
2653 | struct snd_xfern xfern; |
2654 | struct snd_xfern __user *_xfern = arg; | |
2655 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2656 | void *bufs; |
2657 | snd_pcm_sframes_t result; | |
2658 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2659 | return -EBADFD; | |
2660 | if (runtime->channels > 128) | |
2661 | return -EINVAL; | |
2662 | if (put_user(0, &_xfern->result)) | |
2663 | return -EFAULT; | |
2664 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2665 | return -EFAULT; | |
ef44a1ec LZ |
2666 | |
2667 | bufs = memdup_user(xfern.bufs, | |
2668 | sizeof(void *) * runtime->channels); | |
2669 | if (IS_ERR(bufs)) | |
2670 | return PTR_ERR(bufs); | |
1da177e4 LT |
2671 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); |
2672 | kfree(bufs); | |
2673 | __put_user(result, &_xfern->result); | |
2674 | return result < 0 ? result : 0; | |
2675 | } | |
2676 | case SNDRV_PCM_IOCTL_REWIND: | |
2677 | { | |
2678 | snd_pcm_uframes_t frames; | |
2679 | snd_pcm_uframes_t __user *_frames = arg; | |
2680 | snd_pcm_sframes_t result; | |
2681 | if (get_user(frames, _frames)) | |
2682 | return -EFAULT; | |
2683 | if (put_user(0, _frames)) | |
2684 | return -EFAULT; | |
2685 | result = snd_pcm_capture_rewind(substream, frames); | |
2686 | __put_user(result, _frames); | |
2687 | return result < 0 ? result : 0; | |
2688 | } | |
2689 | case SNDRV_PCM_IOCTL_FORWARD: | |
2690 | { | |
2691 | snd_pcm_uframes_t frames; | |
2692 | snd_pcm_uframes_t __user *_frames = arg; | |
2693 | snd_pcm_sframes_t result; | |
2694 | if (get_user(frames, _frames)) | |
2695 | return -EFAULT; | |
2696 | if (put_user(0, _frames)) | |
2697 | return -EFAULT; | |
2698 | result = snd_pcm_capture_forward(substream, frames); | |
2699 | __put_user(result, _frames); | |
2700 | return result < 0 ? result : 0; | |
2701 | } | |
2702 | } | |
0df63e44 | 2703 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2704 | } |
2705 | ||
877211f5 TI |
2706 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
2707 | unsigned long arg) | |
1da177e4 | 2708 | { |
877211f5 | 2709 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2710 | |
2711 | pcm_file = file->private_data; | |
2712 | ||
2713 | if (((cmd >> 8) & 0xff) != 'A') | |
2714 | return -ENOTTY; | |
2715 | ||
0df63e44 TI |
2716 | return snd_pcm_playback_ioctl1(file, pcm_file->substream, cmd, |
2717 | (void __user *)arg); | |
1da177e4 LT |
2718 | } |
2719 | ||
877211f5 TI |
2720 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
2721 | unsigned long arg) | |
1da177e4 | 2722 | { |
877211f5 | 2723 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2724 | |
2725 | pcm_file = file->private_data; | |
2726 | ||
2727 | if (((cmd >> 8) & 0xff) != 'A') | |
2728 | return -ENOTTY; | |
2729 | ||
0df63e44 TI |
2730 | return snd_pcm_capture_ioctl1(file, pcm_file->substream, cmd, |
2731 | (void __user *)arg); | |
1da177e4 LT |
2732 | } |
2733 | ||
bf1bbb5a TI |
2734 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
2735 | unsigned int cmd, void *arg) | |
1da177e4 LT |
2736 | { |
2737 | mm_segment_t fs; | |
2738 | int result; | |
2739 | ||
2740 | fs = snd_enter_user(); | |
1da177e4 LT |
2741 | switch (substream->stream) { |
2742 | case SNDRV_PCM_STREAM_PLAYBACK: | |
0df63e44 TI |
2743 | result = snd_pcm_playback_ioctl1(NULL, substream, cmd, |
2744 | (void __user *)arg); | |
bf1bbb5a | 2745 | break; |
1da177e4 | 2746 | case SNDRV_PCM_STREAM_CAPTURE: |
0df63e44 TI |
2747 | result = snd_pcm_capture_ioctl1(NULL, substream, cmd, |
2748 | (void __user *)arg); | |
bf1bbb5a | 2749 | break; |
1da177e4 | 2750 | default: |
bf1bbb5a TI |
2751 | result = -EINVAL; |
2752 | break; | |
1da177e4 | 2753 | } |
bf1bbb5a TI |
2754 | snd_leave_user(fs); |
2755 | return result; | |
1da177e4 LT |
2756 | } |
2757 | ||
e88e8ae6 TI |
2758 | EXPORT_SYMBOL(snd_pcm_kernel_ioctl); |
2759 | ||
877211f5 TI |
2760 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
2761 | loff_t * offset) | |
1da177e4 | 2762 | { |
877211f5 TI |
2763 | struct snd_pcm_file *pcm_file; |
2764 | struct snd_pcm_substream *substream; | |
2765 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2766 | snd_pcm_sframes_t result; |
2767 | ||
2768 | pcm_file = file->private_data; | |
2769 | substream = pcm_file->substream; | |
7eaa943c TI |
2770 | if (PCM_RUNTIME_CHECK(substream)) |
2771 | return -ENXIO; | |
1da177e4 LT |
2772 | runtime = substream->runtime; |
2773 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2774 | return -EBADFD; | |
2775 | if (!frame_aligned(runtime, count)) | |
2776 | return -EINVAL; | |
2777 | count = bytes_to_frames(runtime, count); | |
2778 | result = snd_pcm_lib_read(substream, buf, count); | |
2779 | if (result > 0) | |
2780 | result = frames_to_bytes(runtime, result); | |
2781 | return result; | |
2782 | } | |
2783 | ||
877211f5 TI |
2784 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
2785 | size_t count, loff_t * offset) | |
1da177e4 | 2786 | { |
877211f5 TI |
2787 | struct snd_pcm_file *pcm_file; |
2788 | struct snd_pcm_substream *substream; | |
2789 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2790 | snd_pcm_sframes_t result; |
2791 | ||
2792 | pcm_file = file->private_data; | |
2793 | substream = pcm_file->substream; | |
7eaa943c TI |
2794 | if (PCM_RUNTIME_CHECK(substream)) |
2795 | return -ENXIO; | |
1da177e4 | 2796 | runtime = substream->runtime; |
7eaa943c TI |
2797 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
2798 | return -EBADFD; | |
2799 | if (!frame_aligned(runtime, count)) | |
2800 | return -EINVAL; | |
1da177e4 LT |
2801 | count = bytes_to_frames(runtime, count); |
2802 | result = snd_pcm_lib_write(substream, buf, count); | |
2803 | if (result > 0) | |
2804 | result = frames_to_bytes(runtime, result); | |
1da177e4 LT |
2805 | return result; |
2806 | } | |
2807 | ||
ee0b3e67 BP |
2808 | static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov, |
2809 | unsigned long nr_segs, loff_t pos) | |
1da177e4 LT |
2810 | |
2811 | { | |
877211f5 TI |
2812 | struct snd_pcm_file *pcm_file; |
2813 | struct snd_pcm_substream *substream; | |
2814 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2815 | snd_pcm_sframes_t result; |
2816 | unsigned long i; | |
2817 | void __user **bufs; | |
2818 | snd_pcm_uframes_t frames; | |
2819 | ||
ee0b3e67 | 2820 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 | 2821 | substream = pcm_file->substream; |
7eaa943c TI |
2822 | if (PCM_RUNTIME_CHECK(substream)) |
2823 | return -ENXIO; | |
1da177e4 LT |
2824 | runtime = substream->runtime; |
2825 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2826 | return -EBADFD; | |
ee0b3e67 | 2827 | if (nr_segs > 1024 || nr_segs != runtime->channels) |
1da177e4 | 2828 | return -EINVAL; |
ee0b3e67 | 2829 | if (!frame_aligned(runtime, iov->iov_len)) |
1da177e4 | 2830 | return -EINVAL; |
ee0b3e67 BP |
2831 | frames = bytes_to_samples(runtime, iov->iov_len); |
2832 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2833 | if (bufs == NULL) |
2834 | return -ENOMEM; | |
ee0b3e67 BP |
2835 | for (i = 0; i < nr_segs; ++i) |
2836 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2837 | result = snd_pcm_lib_readv(substream, bufs, frames); |
2838 | if (result > 0) | |
2839 | result = frames_to_bytes(runtime, result); | |
2840 | kfree(bufs); | |
2841 | return result; | |
2842 | } | |
2843 | ||
ee0b3e67 BP |
2844 | static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov, |
2845 | unsigned long nr_segs, loff_t pos) | |
1da177e4 | 2846 | { |
877211f5 TI |
2847 | struct snd_pcm_file *pcm_file; |
2848 | struct snd_pcm_substream *substream; | |
2849 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2850 | snd_pcm_sframes_t result; |
2851 | unsigned long i; | |
2852 | void __user **bufs; | |
2853 | snd_pcm_uframes_t frames; | |
2854 | ||
ee0b3e67 | 2855 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 | 2856 | substream = pcm_file->substream; |
7eaa943c TI |
2857 | if (PCM_RUNTIME_CHECK(substream)) |
2858 | return -ENXIO; | |
1da177e4 | 2859 | runtime = substream->runtime; |
7eaa943c TI |
2860 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
2861 | return -EBADFD; | |
ee0b3e67 | 2862 | if (nr_segs > 128 || nr_segs != runtime->channels || |
7eaa943c TI |
2863 | !frame_aligned(runtime, iov->iov_len)) |
2864 | return -EINVAL; | |
ee0b3e67 BP |
2865 | frames = bytes_to_samples(runtime, iov->iov_len); |
2866 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2867 | if (bufs == NULL) |
2868 | return -ENOMEM; | |
ee0b3e67 BP |
2869 | for (i = 0; i < nr_segs; ++i) |
2870 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2871 | result = snd_pcm_lib_writev(substream, bufs, frames); |
2872 | if (result > 0) | |
2873 | result = frames_to_bytes(runtime, result); | |
2874 | kfree(bufs); | |
1da177e4 LT |
2875 | return result; |
2876 | } | |
2877 | ||
2878 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) | |
2879 | { | |
877211f5 TI |
2880 | struct snd_pcm_file *pcm_file; |
2881 | struct snd_pcm_substream *substream; | |
2882 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2883 | unsigned int mask; |
2884 | snd_pcm_uframes_t avail; | |
2885 | ||
2886 | pcm_file = file->private_data; | |
2887 | ||
2888 | substream = pcm_file->substream; | |
7eaa943c TI |
2889 | if (PCM_RUNTIME_CHECK(substream)) |
2890 | return -ENXIO; | |
1da177e4 LT |
2891 | runtime = substream->runtime; |
2892 | ||
2893 | poll_wait(file, &runtime->sleep, wait); | |
2894 | ||
2895 | snd_pcm_stream_lock_irq(substream); | |
2896 | avail = snd_pcm_playback_avail(runtime); | |
2897 | switch (runtime->status->state) { | |
2898 | case SNDRV_PCM_STATE_RUNNING: | |
2899 | case SNDRV_PCM_STATE_PREPARED: | |
2900 | case SNDRV_PCM_STATE_PAUSED: | |
2901 | if (avail >= runtime->control->avail_min) { | |
2902 | mask = POLLOUT | POLLWRNORM; | |
2903 | break; | |
2904 | } | |
2905 | /* Fall through */ | |
2906 | case SNDRV_PCM_STATE_DRAINING: | |
2907 | mask = 0; | |
2908 | break; | |
2909 | default: | |
2910 | mask = POLLOUT | POLLWRNORM | POLLERR; | |
2911 | break; | |
2912 | } | |
2913 | snd_pcm_stream_unlock_irq(substream); | |
2914 | return mask; | |
2915 | } | |
2916 | ||
2917 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) | |
2918 | { | |
877211f5 TI |
2919 | struct snd_pcm_file *pcm_file; |
2920 | struct snd_pcm_substream *substream; | |
2921 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2922 | unsigned int mask; |
2923 | snd_pcm_uframes_t avail; | |
2924 | ||
2925 | pcm_file = file->private_data; | |
2926 | ||
2927 | substream = pcm_file->substream; | |
7eaa943c TI |
2928 | if (PCM_RUNTIME_CHECK(substream)) |
2929 | return -ENXIO; | |
1da177e4 LT |
2930 | runtime = substream->runtime; |
2931 | ||
2932 | poll_wait(file, &runtime->sleep, wait); | |
2933 | ||
2934 | snd_pcm_stream_lock_irq(substream); | |
2935 | avail = snd_pcm_capture_avail(runtime); | |
2936 | switch (runtime->status->state) { | |
2937 | case SNDRV_PCM_STATE_RUNNING: | |
2938 | case SNDRV_PCM_STATE_PREPARED: | |
2939 | case SNDRV_PCM_STATE_PAUSED: | |
2940 | if (avail >= runtime->control->avail_min) { | |
2941 | mask = POLLIN | POLLRDNORM; | |
2942 | break; | |
2943 | } | |
2944 | mask = 0; | |
2945 | break; | |
2946 | case SNDRV_PCM_STATE_DRAINING: | |
2947 | if (avail > 0) { | |
2948 | mask = POLLIN | POLLRDNORM; | |
2949 | break; | |
2950 | } | |
2951 | /* Fall through */ | |
2952 | default: | |
2953 | mask = POLLIN | POLLRDNORM | POLLERR; | |
2954 | break; | |
2955 | } | |
2956 | snd_pcm_stream_unlock_irq(substream); | |
2957 | return mask; | |
2958 | } | |
2959 | ||
2960 | /* | |
2961 | * mmap support | |
2962 | */ | |
2963 | ||
2964 | /* | |
2965 | * Only on coherent architectures, we can mmap the status and the control records | |
2966 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... | |
2967 | */ | |
2968 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
2969 | /* | |
2970 | * mmap status record | |
2971 | */ | |
3ad5afcd NP |
2972 | static int snd_pcm_mmap_status_fault(struct vm_area_struct *area, |
2973 | struct vm_fault *vmf) | |
1da177e4 | 2974 | { |
877211f5 TI |
2975 | struct snd_pcm_substream *substream = area->vm_private_data; |
2976 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2977 | |
2978 | if (substream == NULL) | |
3ad5afcd | 2979 | return VM_FAULT_SIGBUS; |
1da177e4 | 2980 | runtime = substream->runtime; |
3ad5afcd NP |
2981 | vmf->page = virt_to_page(runtime->status); |
2982 | get_page(vmf->page); | |
2983 | return 0; | |
1da177e4 LT |
2984 | } |
2985 | ||
2986 | static struct vm_operations_struct snd_pcm_vm_ops_status = | |
2987 | { | |
3ad5afcd | 2988 | .fault = snd_pcm_mmap_status_fault, |
1da177e4 LT |
2989 | }; |
2990 | ||
877211f5 | 2991 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
2992 | struct vm_area_struct *area) |
2993 | { | |
877211f5 | 2994 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
2995 | long size; |
2996 | if (!(area->vm_flags & VM_READ)) | |
2997 | return -EINVAL; | |
2998 | runtime = substream->runtime; | |
1da177e4 | 2999 | size = area->vm_end - area->vm_start; |
877211f5 | 3000 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
1da177e4 LT |
3001 | return -EINVAL; |
3002 | area->vm_ops = &snd_pcm_vm_ops_status; | |
3003 | area->vm_private_data = substream; | |
3004 | area->vm_flags |= VM_RESERVED; | |
3005 | return 0; | |
3006 | } | |
3007 | ||
3008 | /* | |
3009 | * mmap control record | |
3010 | */ | |
3ad5afcd NP |
3011 | static int snd_pcm_mmap_control_fault(struct vm_area_struct *area, |
3012 | struct vm_fault *vmf) | |
1da177e4 | 3013 | { |
877211f5 TI |
3014 | struct snd_pcm_substream *substream = area->vm_private_data; |
3015 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3016 | |
3017 | if (substream == NULL) | |
3ad5afcd | 3018 | return VM_FAULT_SIGBUS; |
1da177e4 | 3019 | runtime = substream->runtime; |
3ad5afcd NP |
3020 | vmf->page = virt_to_page(runtime->control); |
3021 | get_page(vmf->page); | |
3022 | return 0; | |
1da177e4 LT |
3023 | } |
3024 | ||
3025 | static struct vm_operations_struct snd_pcm_vm_ops_control = | |
3026 | { | |
3ad5afcd | 3027 | .fault = snd_pcm_mmap_control_fault, |
1da177e4 LT |
3028 | }; |
3029 | ||
877211f5 | 3030 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3031 | struct vm_area_struct *area) |
3032 | { | |
877211f5 | 3033 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3034 | long size; |
3035 | if (!(area->vm_flags & VM_READ)) | |
3036 | return -EINVAL; | |
3037 | runtime = substream->runtime; | |
1da177e4 | 3038 | size = area->vm_end - area->vm_start; |
877211f5 | 3039 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
3040 | return -EINVAL; |
3041 | area->vm_ops = &snd_pcm_vm_ops_control; | |
3042 | area->vm_private_data = substream; | |
3043 | area->vm_flags |= VM_RESERVED; | |
3044 | return 0; | |
3045 | } | |
3046 | #else /* ! coherent mmap */ | |
3047 | /* | |
3048 | * don't support mmap for status and control records. | |
3049 | */ | |
877211f5 | 3050 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3051 | struct vm_area_struct *area) |
3052 | { | |
3053 | return -ENXIO; | |
3054 | } | |
877211f5 | 3055 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3056 | struct vm_area_struct *area) |
3057 | { | |
3058 | return -ENXIO; | |
3059 | } | |
3060 | #endif /* coherent mmap */ | |
3061 | ||
3062 | /* | |
3ad5afcd | 3063 | * fault callback for mmapping a RAM page |
1da177e4 | 3064 | */ |
3ad5afcd NP |
3065 | static int snd_pcm_mmap_data_fault(struct vm_area_struct *area, |
3066 | struct vm_fault *vmf) | |
1da177e4 | 3067 | { |
877211f5 TI |
3068 | struct snd_pcm_substream *substream = area->vm_private_data; |
3069 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3070 | unsigned long offset; |
3071 | struct page * page; | |
3072 | void *vaddr; | |
3073 | size_t dma_bytes; | |
3074 | ||
3075 | if (substream == NULL) | |
3ad5afcd | 3076 | return VM_FAULT_SIGBUS; |
1da177e4 | 3077 | runtime = substream->runtime; |
3ad5afcd | 3078 | offset = vmf->pgoff << PAGE_SHIFT; |
1da177e4 LT |
3079 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
3080 | if (offset > dma_bytes - PAGE_SIZE) | |
3ad5afcd | 3081 | return VM_FAULT_SIGBUS; |
1da177e4 LT |
3082 | if (substream->ops->page) { |
3083 | page = substream->ops->page(substream, offset); | |
3ad5afcd NP |
3084 | if (!page) |
3085 | return VM_FAULT_SIGBUS; | |
1da177e4 LT |
3086 | } else { |
3087 | vaddr = runtime->dma_area + offset; | |
3088 | page = virt_to_page(vaddr); | |
3089 | } | |
b5810039 | 3090 | get_page(page); |
3ad5afcd NP |
3091 | vmf->page = page; |
3092 | return 0; | |
1da177e4 LT |
3093 | } |
3094 | ||
3095 | static struct vm_operations_struct snd_pcm_vm_ops_data = | |
3096 | { | |
3097 | .open = snd_pcm_mmap_data_open, | |
3098 | .close = snd_pcm_mmap_data_close, | |
3ad5afcd | 3099 | .fault = snd_pcm_mmap_data_fault, |
1da177e4 LT |
3100 | }; |
3101 | ||
3102 | /* | |
3103 | * mmap the DMA buffer on RAM | |
3104 | */ | |
877211f5 TI |
3105 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
3106 | struct vm_area_struct *area) | |
1da177e4 LT |
3107 | { |
3108 | area->vm_ops = &snd_pcm_vm_ops_data; | |
3109 | area->vm_private_data = substream; | |
3110 | area->vm_flags |= VM_RESERVED; | |
9c323fcb | 3111 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3112 | return 0; |
3113 | } | |
3114 | ||
3115 | /* | |
3116 | * mmap the DMA buffer on I/O memory area | |
3117 | */ | |
3118 | #if SNDRV_PCM_INFO_MMAP_IOMEM | |
3119 | static struct vm_operations_struct snd_pcm_vm_ops_data_mmio = | |
3120 | { | |
3121 | .open = snd_pcm_mmap_data_open, | |
3122 | .close = snd_pcm_mmap_data_close, | |
3123 | }; | |
3124 | ||
877211f5 TI |
3125 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
3126 | struct vm_area_struct *area) | |
1da177e4 LT |
3127 | { |
3128 | long size; | |
3129 | unsigned long offset; | |
3130 | ||
3131 | #ifdef pgprot_noncached | |
3132 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
3133 | #endif | |
3134 | area->vm_ops = &snd_pcm_vm_ops_data_mmio; | |
3135 | area->vm_private_data = substream; | |
3136 | area->vm_flags |= VM_IO; | |
3137 | size = area->vm_end - area->vm_start; | |
3138 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3139 | if (io_remap_pfn_range(area, area->vm_start, | |
3140 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, | |
3141 | size, area->vm_page_prot)) | |
3142 | return -EAGAIN; | |
9c323fcb | 3143 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3144 | return 0; |
3145 | } | |
e88e8ae6 TI |
3146 | |
3147 | EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); | |
1da177e4 LT |
3148 | #endif /* SNDRV_PCM_INFO_MMAP */ |
3149 | ||
3150 | /* | |
3151 | * mmap DMA buffer | |
3152 | */ | |
877211f5 | 3153 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3154 | struct vm_area_struct *area) |
3155 | { | |
877211f5 | 3156 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3157 | long size; |
3158 | unsigned long offset; | |
3159 | size_t dma_bytes; | |
3160 | ||
3161 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
3162 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) | |
3163 | return -EINVAL; | |
3164 | } else { | |
3165 | if (!(area->vm_flags & VM_READ)) | |
3166 | return -EINVAL; | |
3167 | } | |
3168 | runtime = substream->runtime; | |
1da177e4 LT |
3169 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
3170 | return -EBADFD; | |
3171 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) | |
3172 | return -ENXIO; | |
3173 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || | |
3174 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) | |
3175 | return -EINVAL; | |
3176 | size = area->vm_end - area->vm_start; | |
3177 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3178 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3179 | if ((size_t)size > dma_bytes) | |
3180 | return -EINVAL; | |
3181 | if (offset > dma_bytes - size) | |
3182 | return -EINVAL; | |
3183 | ||
3184 | if (substream->ops->mmap) | |
3185 | return substream->ops->mmap(substream, area); | |
3186 | else | |
3187 | return snd_pcm_default_mmap(substream, area); | |
3188 | } | |
3189 | ||
e88e8ae6 TI |
3190 | EXPORT_SYMBOL(snd_pcm_mmap_data); |
3191 | ||
1da177e4 LT |
3192 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
3193 | { | |
877211f5 TI |
3194 | struct snd_pcm_file * pcm_file; |
3195 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
3196 | unsigned long offset; |
3197 | ||
3198 | pcm_file = file->private_data; | |
3199 | substream = pcm_file->substream; | |
7eaa943c TI |
3200 | if (PCM_RUNTIME_CHECK(substream)) |
3201 | return -ENXIO; | |
1da177e4 LT |
3202 | |
3203 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3204 | switch (offset) { | |
3205 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
548a648b | 3206 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3207 | return -ENXIO; |
3208 | return snd_pcm_mmap_status(substream, file, area); | |
3209 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
548a648b | 3210 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3211 | return -ENXIO; |
3212 | return snd_pcm_mmap_control(substream, file, area); | |
3213 | default: | |
3214 | return snd_pcm_mmap_data(substream, file, area); | |
3215 | } | |
3216 | return 0; | |
3217 | } | |
3218 | ||
3219 | static int snd_pcm_fasync(int fd, struct file * file, int on) | |
3220 | { | |
877211f5 TI |
3221 | struct snd_pcm_file * pcm_file; |
3222 | struct snd_pcm_substream *substream; | |
3223 | struct snd_pcm_runtime *runtime; | |
2db9f0a3 | 3224 | int err = -ENXIO; |
1da177e4 | 3225 | |
2db9f0a3 | 3226 | lock_kernel(); |
1da177e4 LT |
3227 | pcm_file = file->private_data; |
3228 | substream = pcm_file->substream; | |
7eaa943c TI |
3229 | if (PCM_RUNTIME_CHECK(substream)) |
3230 | goto out; | |
1da177e4 | 3231 | runtime = substream->runtime; |
1da177e4 | 3232 | err = fasync_helper(fd, file, on, &runtime->fasync); |
685d87f7 | 3233 | out: |
2db9f0a3 | 3234 | unlock_kernel(); |
60aa4924 | 3235 | return err; |
1da177e4 LT |
3236 | } |
3237 | ||
3238 | /* | |
3239 | * ioctl32 compat | |
3240 | */ | |
3241 | #ifdef CONFIG_COMPAT | |
3242 | #include "pcm_compat.c" | |
3243 | #else | |
3244 | #define snd_pcm_ioctl_compat NULL | |
3245 | #endif | |
3246 | ||
3247 | /* | |
3248 | * To be removed helpers to keep binary compatibility | |
3249 | */ | |
3250 | ||
59d48582 | 3251 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
3252 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
3253 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) | |
3254 | ||
877211f5 TI |
3255 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
3256 | struct snd_pcm_hw_params_old *oparams) | |
1da177e4 LT |
3257 | { |
3258 | unsigned int i; | |
3259 | ||
3260 | memset(params, 0, sizeof(*params)); | |
3261 | params->flags = oparams->flags; | |
3262 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3263 | params->masks[i].bits[0] = oparams->masks[i]; | |
3264 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); | |
3265 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); | |
3266 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); | |
3267 | params->info = oparams->info; | |
3268 | params->msbits = oparams->msbits; | |
3269 | params->rate_num = oparams->rate_num; | |
3270 | params->rate_den = oparams->rate_den; | |
3271 | params->fifo_size = oparams->fifo_size; | |
3272 | } | |
3273 | ||
877211f5 TI |
3274 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
3275 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
3276 | { |
3277 | unsigned int i; | |
3278 | ||
3279 | memset(oparams, 0, sizeof(*oparams)); | |
3280 | oparams->flags = params->flags; | |
3281 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3282 | oparams->masks[i] = params->masks[i].bits[0]; | |
3283 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); | |
3284 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); | |
3285 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); | |
3286 | oparams->info = params->info; | |
3287 | oparams->msbits = params->msbits; | |
3288 | oparams->rate_num = params->rate_num; | |
3289 | oparams->rate_den = params->rate_den; | |
3290 | oparams->fifo_size = params->fifo_size; | |
3291 | } | |
3292 | ||
877211f5 TI |
3293 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
3294 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3295 | { |
877211f5 TI |
3296 | struct snd_pcm_hw_params *params; |
3297 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3298 | int err; |
3299 | ||
3300 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
ef44a1ec LZ |
3301 | if (!params) |
3302 | return -ENOMEM; | |
1da177e4 | 3303 | |
ef44a1ec LZ |
3304 | oparams = memdup_user(_oparams, sizeof(*oparams)); |
3305 | if (IS_ERR(oparams)) { | |
3306 | err = PTR_ERR(oparams); | |
1da177e4 LT |
3307 | goto out; |
3308 | } | |
3309 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3310 | err = snd_pcm_hw_refine(substream, params); | |
3311 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3312 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3313 | if (!err) | |
3314 | err = -EFAULT; | |
3315 | } | |
ef44a1ec LZ |
3316 | |
3317 | kfree(oparams); | |
1da177e4 LT |
3318 | out: |
3319 | kfree(params); | |
1da177e4 LT |
3320 | return err; |
3321 | } | |
3322 | ||
877211f5 TI |
3323 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
3324 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3325 | { |
877211f5 TI |
3326 | struct snd_pcm_hw_params *params; |
3327 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3328 | int err; |
3329 | ||
3330 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
ef44a1ec LZ |
3331 | if (!params) |
3332 | return -ENOMEM; | |
3333 | ||
3334 | oparams = memdup_user(_oparams, sizeof(*oparams)); | |
3335 | if (IS_ERR(oparams)) { | |
3336 | err = PTR_ERR(oparams); | |
1da177e4 LT |
3337 | goto out; |
3338 | } | |
3339 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3340 | err = snd_pcm_hw_params(substream, params); | |
3341 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3342 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3343 | if (!err) | |
3344 | err = -EFAULT; | |
3345 | } | |
ef44a1ec LZ |
3346 | |
3347 | kfree(oparams); | |
1da177e4 LT |
3348 | out: |
3349 | kfree(params); | |
1da177e4 LT |
3350 | return err; |
3351 | } | |
59d48582 | 3352 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
1da177e4 | 3353 | |
7003609b CC |
3354 | #ifndef CONFIG_MMU |
3355 | unsigned long dummy_get_unmapped_area(struct file *file, unsigned long addr, | |
3356 | unsigned long len, unsigned long pgoff, | |
3357 | unsigned long flags) | |
3358 | { | |
3359 | return 0; | |
3360 | } | |
3361 | #else | |
3362 | # define dummy_get_unmapped_area NULL | |
3363 | #endif | |
3364 | ||
1da177e4 LT |
3365 | /* |
3366 | * Register section | |
3367 | */ | |
3368 | ||
9c2e08c5 | 3369 | const struct file_operations snd_pcm_f_ops[2] = { |
1da177e4 | 3370 | { |
2af677fc CL |
3371 | .owner = THIS_MODULE, |
3372 | .write = snd_pcm_write, | |
ee0b3e67 | 3373 | .aio_write = snd_pcm_aio_write, |
f87135f5 | 3374 | .open = snd_pcm_playback_open, |
2af677fc CL |
3375 | .release = snd_pcm_release, |
3376 | .poll = snd_pcm_playback_poll, | |
3377 | .unlocked_ioctl = snd_pcm_playback_ioctl, | |
3378 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3379 | .mmap = snd_pcm_mmap, | |
3380 | .fasync = snd_pcm_fasync, | |
7003609b | 3381 | .get_unmapped_area = dummy_get_unmapped_area, |
1da177e4 LT |
3382 | }, |
3383 | { | |
2af677fc CL |
3384 | .owner = THIS_MODULE, |
3385 | .read = snd_pcm_read, | |
ee0b3e67 | 3386 | .aio_read = snd_pcm_aio_read, |
f87135f5 | 3387 | .open = snd_pcm_capture_open, |
2af677fc CL |
3388 | .release = snd_pcm_release, |
3389 | .poll = snd_pcm_capture_poll, | |
3390 | .unlocked_ioctl = snd_pcm_capture_ioctl, | |
3391 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3392 | .mmap = snd_pcm_mmap, | |
3393 | .fasync = snd_pcm_fasync, | |
7003609b | 3394 | .get_unmapped_area = dummy_get_unmapped_area, |
1da177e4 LT |
3395 | } |
3396 | }; |