Commit | Line | Data |
---|---|---|
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) | |
8bea869c JK |
315 | params->info = hw->info & ~SNDRV_PCM_INFO_FIFO_IN_FRAMES; |
316 | if (!params->fifo_size) { | |
317 | if (snd_mask_min(¶ms->masks[SNDRV_PCM_HW_PARAM_FORMAT]) == | |
318 | snd_mask_max(¶ms->masks[SNDRV_PCM_HW_PARAM_FORMAT]) && | |
319 | snd_mask_min(¶ms->masks[SNDRV_PCM_HW_PARAM_CHANNELS]) == | |
320 | snd_mask_max(¶ms->masks[SNDRV_PCM_HW_PARAM_CHANNELS])) { | |
321 | changed = substream->ops->ioctl(substream, | |
322 | SNDRV_PCM_IOCTL1_FIFO_SIZE, params); | |
8bd9bca3 | 323 | if (changed < 0) |
8bea869c JK |
324 | return changed; |
325 | } | |
326 | } | |
1da177e4 LT |
327 | params->rmask = 0; |
328 | return 0; | |
329 | } | |
330 | ||
e88e8ae6 TI |
331 | EXPORT_SYMBOL(snd_pcm_hw_refine); |
332 | ||
877211f5 TI |
333 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
334 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 335 | { |
877211f5 | 336 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
337 | int err; |
338 | ||
ef44a1ec LZ |
339 | params = memdup_user(_params, sizeof(*params)); |
340 | if (IS_ERR(params)) | |
341 | return PTR_ERR(params); | |
342 | ||
1da177e4 LT |
343 | err = snd_pcm_hw_refine(substream, params); |
344 | if (copy_to_user(_params, params, sizeof(*params))) { | |
345 | if (!err) | |
346 | err = -EFAULT; | |
347 | } | |
ef44a1ec | 348 | |
1da177e4 LT |
349 | kfree(params); |
350 | return err; | |
351 | } | |
352 | ||
9442e691 TI |
353 | static int period_to_usecs(struct snd_pcm_runtime *runtime) |
354 | { | |
355 | int usecs; | |
356 | ||
357 | if (! runtime->rate) | |
358 | return -1; /* invalid */ | |
359 | ||
360 | /* take 75% of period time as the deadline */ | |
361 | usecs = (750000 / runtime->rate) * runtime->period_size; | |
362 | usecs += ((750000 % runtime->rate) * runtime->period_size) / | |
363 | runtime->rate; | |
364 | ||
365 | return usecs; | |
366 | } | |
367 | ||
877211f5 TI |
368 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
369 | struct snd_pcm_hw_params *params) | |
1da177e4 | 370 | { |
877211f5 | 371 | struct snd_pcm_runtime *runtime; |
9442e691 | 372 | int err, usecs; |
1da177e4 LT |
373 | unsigned int bits; |
374 | snd_pcm_uframes_t frames; | |
375 | ||
7eaa943c TI |
376 | if (PCM_RUNTIME_CHECK(substream)) |
377 | return -ENXIO; | |
1da177e4 | 378 | runtime = substream->runtime; |
1da177e4 LT |
379 | snd_pcm_stream_lock_irq(substream); |
380 | switch (runtime->status->state) { | |
381 | case SNDRV_PCM_STATE_OPEN: | |
382 | case SNDRV_PCM_STATE_SETUP: | |
383 | case SNDRV_PCM_STATE_PREPARED: | |
384 | break; | |
385 | default: | |
386 | snd_pcm_stream_unlock_irq(substream); | |
387 | return -EBADFD; | |
388 | } | |
389 | snd_pcm_stream_unlock_irq(substream); | |
390 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
391 | if (!substream->oss.oss) | |
392 | #endif | |
9c323fcb | 393 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
394 | return -EBADFD; |
395 | ||
396 | params->rmask = ~0U; | |
397 | err = snd_pcm_hw_refine(substream, params); | |
398 | if (err < 0) | |
399 | goto _error; | |
400 | ||
401 | err = snd_pcm_hw_params_choose(substream, params); | |
402 | if (err < 0) | |
403 | goto _error; | |
404 | ||
405 | if (substream->ops->hw_params != NULL) { | |
406 | err = substream->ops->hw_params(substream, params); | |
407 | if (err < 0) | |
408 | goto _error; | |
409 | } | |
410 | ||
411 | runtime->access = params_access(params); | |
412 | runtime->format = params_format(params); | |
413 | runtime->subformat = params_subformat(params); | |
414 | runtime->channels = params_channels(params); | |
415 | runtime->rate = params_rate(params); | |
416 | runtime->period_size = params_period_size(params); | |
417 | runtime->periods = params_periods(params); | |
418 | runtime->buffer_size = params_buffer_size(params); | |
1da177e4 LT |
419 | runtime->info = params->info; |
420 | runtime->rate_num = params->rate_num; | |
421 | runtime->rate_den = params->rate_den; | |
422 | ||
423 | bits = snd_pcm_format_physical_width(runtime->format); | |
424 | runtime->sample_bits = bits; | |
425 | bits *= runtime->channels; | |
426 | runtime->frame_bits = bits; | |
427 | frames = 1; | |
428 | while (bits % 8 != 0) { | |
429 | bits *= 2; | |
430 | frames *= 2; | |
431 | } | |
432 | runtime->byte_align = bits / 8; | |
433 | runtime->min_align = frames; | |
434 | ||
435 | /* Default sw params */ | |
436 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
437 | runtime->period_step = 1; | |
1da177e4 | 438 | runtime->control->avail_min = runtime->period_size; |
1da177e4 LT |
439 | runtime->start_threshold = 1; |
440 | runtime->stop_threshold = runtime->buffer_size; | |
441 | runtime->silence_threshold = 0; | |
442 | runtime->silence_size = 0; | |
443 | runtime->boundary = runtime->buffer_size; | |
444 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) | |
445 | runtime->boundary *= 2; | |
446 | ||
447 | snd_pcm_timer_resolution_change(substream); | |
448 | runtime->status->state = SNDRV_PCM_STATE_SETUP; | |
9442e691 | 449 | |
f011e2e2 MG |
450 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, |
451 | substream->latency_id); | |
9442e691 | 452 | if ((usecs = period_to_usecs(runtime)) >= 0) |
f011e2e2 MG |
453 | pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, |
454 | substream->latency_id, usecs); | |
1da177e4 LT |
455 | return 0; |
456 | _error: | |
457 | /* hardware might be unuseable from this time, | |
458 | so we force application to retry to set | |
459 | the correct hardware parameter settings */ | |
460 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
461 | if (substream->ops->hw_free != NULL) | |
462 | substream->ops->hw_free(substream); | |
463 | return err; | |
464 | } | |
465 | ||
877211f5 TI |
466 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
467 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 468 | { |
877211f5 | 469 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
470 | int err; |
471 | ||
ef44a1ec LZ |
472 | params = memdup_user(_params, sizeof(*params)); |
473 | if (IS_ERR(params)) | |
474 | return PTR_ERR(params); | |
475 | ||
1da177e4 LT |
476 | err = snd_pcm_hw_params(substream, params); |
477 | if (copy_to_user(_params, params, sizeof(*params))) { | |
478 | if (!err) | |
479 | err = -EFAULT; | |
480 | } | |
ef44a1ec | 481 | |
1da177e4 LT |
482 | kfree(params); |
483 | return err; | |
484 | } | |
485 | ||
877211f5 | 486 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 487 | { |
877211f5 | 488 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
489 | int result = 0; |
490 | ||
7eaa943c TI |
491 | if (PCM_RUNTIME_CHECK(substream)) |
492 | return -ENXIO; | |
1da177e4 | 493 | runtime = substream->runtime; |
1da177e4 LT |
494 | snd_pcm_stream_lock_irq(substream); |
495 | switch (runtime->status->state) { | |
496 | case SNDRV_PCM_STATE_SETUP: | |
497 | case SNDRV_PCM_STATE_PREPARED: | |
498 | break; | |
499 | default: | |
500 | snd_pcm_stream_unlock_irq(substream); | |
501 | return -EBADFD; | |
502 | } | |
503 | snd_pcm_stream_unlock_irq(substream); | |
9c323fcb | 504 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
505 | return -EBADFD; |
506 | if (substream->ops->hw_free) | |
507 | result = substream->ops->hw_free(substream); | |
508 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
f011e2e2 MG |
509 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, |
510 | substream->latency_id); | |
1da177e4 LT |
511 | return result; |
512 | } | |
513 | ||
877211f5 TI |
514 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
515 | struct snd_pcm_sw_params *params) | |
1da177e4 | 516 | { |
877211f5 | 517 | struct snd_pcm_runtime *runtime; |
1da177e4 | 518 | |
7eaa943c TI |
519 | if (PCM_RUNTIME_CHECK(substream)) |
520 | return -ENXIO; | |
1da177e4 | 521 | runtime = substream->runtime; |
1da177e4 LT |
522 | snd_pcm_stream_lock_irq(substream); |
523 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
524 | snd_pcm_stream_unlock_irq(substream); | |
525 | return -EBADFD; | |
526 | } | |
527 | snd_pcm_stream_unlock_irq(substream); | |
528 | ||
529 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) | |
530 | return -EINVAL; | |
531 | if (params->avail_min == 0) | |
532 | return -EINVAL; | |
1da177e4 LT |
533 | if (params->silence_size >= runtime->boundary) { |
534 | if (params->silence_threshold != 0) | |
535 | return -EINVAL; | |
536 | } else { | |
537 | if (params->silence_size > params->silence_threshold) | |
538 | return -EINVAL; | |
539 | if (params->silence_threshold > runtime->buffer_size) | |
540 | return -EINVAL; | |
541 | } | |
542 | snd_pcm_stream_lock_irq(substream); | |
543 | runtime->tstamp_mode = params->tstamp_mode; | |
1da177e4 LT |
544 | runtime->period_step = params->period_step; |
545 | runtime->control->avail_min = params->avail_min; | |
546 | runtime->start_threshold = params->start_threshold; | |
547 | runtime->stop_threshold = params->stop_threshold; | |
548 | runtime->silence_threshold = params->silence_threshold; | |
549 | runtime->silence_size = params->silence_size; | |
1da177e4 LT |
550 | params->boundary = runtime->boundary; |
551 | if (snd_pcm_running(substream)) { | |
1da177e4 LT |
552 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
553 | runtime->silence_size > 0) | |
554 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
555 | wake_up(&runtime->sleep); | |
556 | } | |
557 | snd_pcm_stream_unlock_irq(substream); | |
558 | return 0; | |
559 | } | |
560 | ||
877211f5 TI |
561 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
562 | struct snd_pcm_sw_params __user * _params) | |
1da177e4 | 563 | { |
877211f5 | 564 | struct snd_pcm_sw_params params; |
1da177e4 LT |
565 | int err; |
566 | if (copy_from_user(¶ms, _params, sizeof(params))) | |
567 | return -EFAULT; | |
568 | err = snd_pcm_sw_params(substream, ¶ms); | |
569 | if (copy_to_user(_params, ¶ms, sizeof(params))) | |
570 | return -EFAULT; | |
571 | return err; | |
572 | } | |
573 | ||
877211f5 TI |
574 | int snd_pcm_status(struct snd_pcm_substream *substream, |
575 | struct snd_pcm_status *status) | |
1da177e4 | 576 | { |
877211f5 | 577 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
578 | |
579 | snd_pcm_stream_lock_irq(substream); | |
580 | status->state = runtime->status->state; | |
581 | status->suspended_state = runtime->status->suspended_state; | |
582 | if (status->state == SNDRV_PCM_STATE_OPEN) | |
583 | goto _end; | |
584 | status->trigger_tstamp = runtime->trigger_tstamp; | |
8c121586 | 585 | if (snd_pcm_running(substream)) { |
1da177e4 | 586 | snd_pcm_update_hw_ptr(substream); |
8c121586 JK |
587 | if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) { |
588 | status->tstamp = runtime->status->tstamp; | |
589 | goto _tstamp_end; | |
590 | } | |
591 | } | |
a713b583 | 592 | snd_pcm_gettime(runtime, &status->tstamp); |
8c121586 | 593 | _tstamp_end: |
1da177e4 LT |
594 | status->appl_ptr = runtime->control->appl_ptr; |
595 | status->hw_ptr = runtime->status->hw_ptr; | |
596 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
597 | status->avail = snd_pcm_playback_avail(runtime); | |
598 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
4bbe1ddf | 599 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) { |
1da177e4 | 600 | status->delay = runtime->buffer_size - status->avail; |
4bbe1ddf TI |
601 | status->delay += runtime->delay; |
602 | } else | |
1da177e4 LT |
603 | status->delay = 0; |
604 | } else { | |
605 | status->avail = snd_pcm_capture_avail(runtime); | |
606 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) | |
4bbe1ddf | 607 | status->delay = status->avail + runtime->delay; |
1da177e4 LT |
608 | else |
609 | status->delay = 0; | |
610 | } | |
611 | status->avail_max = runtime->avail_max; | |
612 | status->overrange = runtime->overrange; | |
613 | runtime->avail_max = 0; | |
614 | runtime->overrange = 0; | |
615 | _end: | |
616 | snd_pcm_stream_unlock_irq(substream); | |
617 | return 0; | |
618 | } | |
619 | ||
877211f5 TI |
620 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
621 | struct snd_pcm_status __user * _status) | |
1da177e4 | 622 | { |
877211f5 | 623 | struct snd_pcm_status status; |
1da177e4 LT |
624 | int res; |
625 | ||
1da177e4 LT |
626 | memset(&status, 0, sizeof(status)); |
627 | res = snd_pcm_status(substream, &status); | |
628 | if (res < 0) | |
629 | return res; | |
630 | if (copy_to_user(_status, &status, sizeof(status))) | |
631 | return -EFAULT; | |
632 | return 0; | |
633 | } | |
634 | ||
877211f5 TI |
635 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
636 | struct snd_pcm_channel_info * info) | |
1da177e4 | 637 | { |
877211f5 | 638 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
639 | unsigned int channel; |
640 | ||
1da177e4 LT |
641 | channel = info->channel; |
642 | runtime = substream->runtime; | |
643 | snd_pcm_stream_lock_irq(substream); | |
644 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
645 | snd_pcm_stream_unlock_irq(substream); | |
646 | return -EBADFD; | |
647 | } | |
648 | snd_pcm_stream_unlock_irq(substream); | |
649 | if (channel >= runtime->channels) | |
650 | return -EINVAL; | |
651 | memset(info, 0, sizeof(*info)); | |
652 | info->channel = channel; | |
653 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); | |
654 | } | |
655 | ||
877211f5 TI |
656 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
657 | struct snd_pcm_channel_info __user * _info) | |
1da177e4 | 658 | { |
877211f5 | 659 | struct snd_pcm_channel_info info; |
1da177e4 LT |
660 | int res; |
661 | ||
662 | if (copy_from_user(&info, _info, sizeof(info))) | |
663 | return -EFAULT; | |
664 | res = snd_pcm_channel_info(substream, &info); | |
665 | if (res < 0) | |
666 | return res; | |
667 | if (copy_to_user(_info, &info, sizeof(info))) | |
668 | return -EFAULT; | |
669 | return 0; | |
670 | } | |
671 | ||
877211f5 | 672 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
1da177e4 | 673 | { |
877211f5 | 674 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
675 | if (runtime->trigger_master == NULL) |
676 | return; | |
677 | if (runtime->trigger_master == substream) { | |
b751eef1 | 678 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); |
1da177e4 LT |
679 | } else { |
680 | snd_pcm_trigger_tstamp(runtime->trigger_master); | |
681 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; | |
682 | } | |
683 | runtime->trigger_master = NULL; | |
684 | } | |
685 | ||
686 | struct action_ops { | |
877211f5 TI |
687 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
688 | int (*do_action)(struct snd_pcm_substream *substream, int state); | |
689 | void (*undo_action)(struct snd_pcm_substream *substream, int state); | |
690 | void (*post_action)(struct snd_pcm_substream *substream, int state); | |
1da177e4 LT |
691 | }; |
692 | ||
693 | /* | |
694 | * this functions is core for handling of linked stream | |
695 | * Note: the stream state might be changed also on failure | |
696 | * Note2: call with calling stream lock + link lock | |
697 | */ | |
698 | static int snd_pcm_action_group(struct action_ops *ops, | |
877211f5 | 699 | struct snd_pcm_substream *substream, |
1da177e4 LT |
700 | int state, int do_lock) |
701 | { | |
877211f5 TI |
702 | struct snd_pcm_substream *s = NULL; |
703 | struct snd_pcm_substream *s1; | |
1da177e4 LT |
704 | int res = 0; |
705 | ||
ef991b95 | 706 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 707 | if (do_lock && s != substream) |
208eee2a FD |
708 | spin_lock_nested(&s->self_group.lock, |
709 | SINGLE_DEPTH_NESTING); | |
1da177e4 LT |
710 | res = ops->pre_action(s, state); |
711 | if (res < 0) | |
712 | goto _unlock; | |
713 | } | |
ef991b95 | 714 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
715 | res = ops->do_action(s, state); |
716 | if (res < 0) { | |
717 | if (ops->undo_action) { | |
ef991b95 | 718 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
719 | if (s1 == s) /* failed stream */ |
720 | break; | |
721 | ops->undo_action(s1, state); | |
722 | } | |
723 | } | |
724 | s = NULL; /* unlock all */ | |
725 | goto _unlock; | |
726 | } | |
727 | } | |
ef991b95 | 728 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
729 | ops->post_action(s, state); |
730 | } | |
731 | _unlock: | |
732 | if (do_lock) { | |
733 | /* unlock streams */ | |
ef991b95 | 734 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
735 | if (s1 != substream) |
736 | spin_unlock(&s1->self_group.lock); | |
737 | if (s1 == s) /* end */ | |
738 | break; | |
739 | } | |
740 | } | |
741 | return res; | |
742 | } | |
743 | ||
744 | /* | |
745 | * Note: call with stream lock | |
746 | */ | |
747 | static int snd_pcm_action_single(struct action_ops *ops, | |
877211f5 | 748 | struct snd_pcm_substream *substream, |
1da177e4 LT |
749 | int state) |
750 | { | |
751 | int res; | |
752 | ||
753 | res = ops->pre_action(substream, state); | |
754 | if (res < 0) | |
755 | return res; | |
756 | res = ops->do_action(substream, state); | |
757 | if (res == 0) | |
758 | ops->post_action(substream, state); | |
759 | else if (ops->undo_action) | |
760 | ops->undo_action(substream, state); | |
761 | return res; | |
762 | } | |
763 | ||
764 | /* | |
765 | * Note: call with stream lock | |
766 | */ | |
767 | static int snd_pcm_action(struct action_ops *ops, | |
877211f5 | 768 | struct snd_pcm_substream *substream, |
1da177e4 LT |
769 | int state) |
770 | { | |
771 | int res; | |
772 | ||
773 | if (snd_pcm_stream_linked(substream)) { | |
774 | if (!spin_trylock(&substream->group->lock)) { | |
775 | spin_unlock(&substream->self_group.lock); | |
776 | spin_lock(&substream->group->lock); | |
777 | spin_lock(&substream->self_group.lock); | |
778 | } | |
779 | res = snd_pcm_action_group(ops, substream, state, 1); | |
780 | spin_unlock(&substream->group->lock); | |
781 | } else { | |
782 | res = snd_pcm_action_single(ops, substream, state); | |
783 | } | |
784 | return res; | |
785 | } | |
786 | ||
787 | /* | |
788 | * Note: don't use any locks before | |
789 | */ | |
790 | static int snd_pcm_action_lock_irq(struct action_ops *ops, | |
877211f5 | 791 | struct snd_pcm_substream *substream, |
1da177e4 LT |
792 | int state) |
793 | { | |
794 | int res; | |
795 | ||
796 | read_lock_irq(&snd_pcm_link_rwlock); | |
797 | if (snd_pcm_stream_linked(substream)) { | |
798 | spin_lock(&substream->group->lock); | |
799 | spin_lock(&substream->self_group.lock); | |
800 | res = snd_pcm_action_group(ops, substream, state, 1); | |
801 | spin_unlock(&substream->self_group.lock); | |
802 | spin_unlock(&substream->group->lock); | |
803 | } else { | |
804 | spin_lock(&substream->self_group.lock); | |
805 | res = snd_pcm_action_single(ops, substream, state); | |
806 | spin_unlock(&substream->self_group.lock); | |
807 | } | |
808 | read_unlock_irq(&snd_pcm_link_rwlock); | |
809 | return res; | |
810 | } | |
811 | ||
812 | /* | |
813 | */ | |
814 | static int snd_pcm_action_nonatomic(struct action_ops *ops, | |
877211f5 | 815 | struct snd_pcm_substream *substream, |
1da177e4 LT |
816 | int state) |
817 | { | |
818 | int res; | |
819 | ||
820 | down_read(&snd_pcm_link_rwsem); | |
821 | if (snd_pcm_stream_linked(substream)) | |
822 | res = snd_pcm_action_group(ops, substream, state, 0); | |
823 | else | |
824 | res = snd_pcm_action_single(ops, substream, state); | |
825 | up_read(&snd_pcm_link_rwsem); | |
826 | return res; | |
827 | } | |
828 | ||
829 | /* | |
830 | * start callbacks | |
831 | */ | |
877211f5 | 832 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 833 | { |
877211f5 | 834 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
835 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
836 | return -EBADFD; | |
837 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
838 | !snd_pcm_playback_data(substream)) | |
839 | return -EPIPE; | |
840 | runtime->trigger_master = substream; | |
841 | return 0; | |
842 | } | |
843 | ||
877211f5 | 844 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
845 | { |
846 | if (substream->runtime->trigger_master != substream) | |
847 | return 0; | |
848 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); | |
849 | } | |
850 | ||
877211f5 | 851 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
852 | { |
853 | if (substream->runtime->trigger_master == substream) | |
854 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
855 | } | |
856 | ||
877211f5 | 857 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 858 | { |
877211f5 | 859 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 860 | snd_pcm_trigger_tstamp(substream); |
6af3fb72 | 861 | runtime->hw_ptr_jiffies = jiffies; |
1da177e4 LT |
862 | runtime->status->state = state; |
863 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
864 | runtime->silence_size > 0) | |
865 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1da177e4 | 866 | if (substream->timer) |
877211f5 TI |
867 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
868 | &runtime->trigger_tstamp); | |
1da177e4 LT |
869 | } |
870 | ||
871 | static struct action_ops snd_pcm_action_start = { | |
872 | .pre_action = snd_pcm_pre_start, | |
873 | .do_action = snd_pcm_do_start, | |
874 | .undo_action = snd_pcm_undo_start, | |
875 | .post_action = snd_pcm_post_start | |
876 | }; | |
877 | ||
878 | /** | |
1c85cc64 | 879 | * snd_pcm_start - start all linked streams |
df8db936 | 880 | * @substream: the PCM substream instance |
1da177e4 | 881 | */ |
877211f5 | 882 | int snd_pcm_start(struct snd_pcm_substream *substream) |
1da177e4 | 883 | { |
877211f5 TI |
884 | return snd_pcm_action(&snd_pcm_action_start, substream, |
885 | SNDRV_PCM_STATE_RUNNING); | |
1da177e4 LT |
886 | } |
887 | ||
888 | /* | |
889 | * stop callbacks | |
890 | */ | |
877211f5 | 891 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 892 | { |
877211f5 | 893 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
894 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
895 | return -EBADFD; | |
896 | runtime->trigger_master = substream; | |
897 | return 0; | |
898 | } | |
899 | ||
877211f5 | 900 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
901 | { |
902 | if (substream->runtime->trigger_master == substream && | |
903 | snd_pcm_running(substream)) | |
904 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
905 | return 0; /* unconditonally stop all substreams */ | |
906 | } | |
907 | ||
877211f5 | 908 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 909 | { |
877211f5 | 910 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
911 | if (runtime->status->state != state) { |
912 | snd_pcm_trigger_tstamp(substream); | |
913 | if (substream->timer) | |
877211f5 TI |
914 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
915 | &runtime->trigger_tstamp); | |
1da177e4 | 916 | runtime->status->state = state; |
1da177e4 LT |
917 | } |
918 | wake_up(&runtime->sleep); | |
919 | } | |
920 | ||
921 | static struct action_ops snd_pcm_action_stop = { | |
922 | .pre_action = snd_pcm_pre_stop, | |
923 | .do_action = snd_pcm_do_stop, | |
924 | .post_action = snd_pcm_post_stop | |
925 | }; | |
926 | ||
927 | /** | |
1c85cc64 | 928 | * snd_pcm_stop - try to stop all running streams in the substream group |
df8db936 TI |
929 | * @substream: the PCM substream instance |
930 | * @state: PCM state after stopping the stream | |
1da177e4 | 931 | * |
1c85cc64 | 932 | * The state of each stream is then changed to the given state unconditionally. |
1da177e4 | 933 | */ |
877211f5 | 934 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
935 | { |
936 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); | |
937 | } | |
938 | ||
e88e8ae6 TI |
939 | EXPORT_SYMBOL(snd_pcm_stop); |
940 | ||
1da177e4 | 941 | /** |
1c85cc64 | 942 | * snd_pcm_drain_done - stop the DMA only when the given stream is playback |
df8db936 | 943 | * @substream: the PCM substream |
1da177e4 | 944 | * |
1c85cc64 | 945 | * After stopping, the state is changed to SETUP. |
1da177e4 LT |
946 | * Unlike snd_pcm_stop(), this affects only the given stream. |
947 | */ | |
877211f5 | 948 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
1da177e4 | 949 | { |
877211f5 TI |
950 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
951 | SNDRV_PCM_STATE_SETUP); | |
1da177e4 LT |
952 | } |
953 | ||
954 | /* | |
955 | * pause callbacks | |
956 | */ | |
877211f5 | 957 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 958 | { |
877211f5 | 959 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
960 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
961 | return -ENOSYS; | |
962 | if (push) { | |
963 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) | |
964 | return -EBADFD; | |
965 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) | |
966 | return -EBADFD; | |
967 | runtime->trigger_master = substream; | |
968 | return 0; | |
969 | } | |
970 | ||
877211f5 | 971 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
972 | { |
973 | if (substream->runtime->trigger_master != substream) | |
974 | return 0; | |
6af3fb72 TI |
975 | /* The jiffies check in snd_pcm_update_hw_ptr*() is done by |
976 | * a delta betwen the current jiffies, this gives a large enough | |
977 | * delta, effectively to skip the check once. | |
978 | */ | |
979 | substream->runtime->hw_ptr_jiffies = jiffies - HZ * 1000; | |
1da177e4 LT |
980 | return substream->ops->trigger(substream, |
981 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : | |
982 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
983 | } | |
984 | ||
877211f5 | 985 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
986 | { |
987 | if (substream->runtime->trigger_master == substream) | |
988 | substream->ops->trigger(substream, | |
989 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : | |
990 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
991 | } | |
992 | ||
877211f5 | 993 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 994 | { |
877211f5 | 995 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
996 | snd_pcm_trigger_tstamp(substream); |
997 | if (push) { | |
998 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; | |
999 | if (substream->timer) | |
877211f5 TI |
1000 | snd_timer_notify(substream->timer, |
1001 | SNDRV_TIMER_EVENT_MPAUSE, | |
1002 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1003 | wake_up(&runtime->sleep); |
1004 | } else { | |
1005 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; | |
1da177e4 | 1006 | if (substream->timer) |
877211f5 TI |
1007 | snd_timer_notify(substream->timer, |
1008 | SNDRV_TIMER_EVENT_MCONTINUE, | |
1009 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1010 | } |
1011 | } | |
1012 | ||
1013 | static struct action_ops snd_pcm_action_pause = { | |
1014 | .pre_action = snd_pcm_pre_pause, | |
1015 | .do_action = snd_pcm_do_pause, | |
1016 | .undo_action = snd_pcm_undo_pause, | |
1017 | .post_action = snd_pcm_post_pause | |
1018 | }; | |
1019 | ||
1020 | /* | |
1021 | * Push/release the pause for all linked streams. | |
1022 | */ | |
877211f5 | 1023 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1024 | { |
1025 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); | |
1026 | } | |
1027 | ||
1028 | #ifdef CONFIG_PM | |
1029 | /* suspend */ | |
1030 | ||
877211f5 | 1031 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1032 | { |
877211f5 | 1033 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1034 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
1035 | return -EBUSY; | |
1036 | runtime->trigger_master = substream; | |
1037 | return 0; | |
1038 | } | |
1039 | ||
877211f5 | 1040 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1041 | { |
877211f5 | 1042 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1043 | if (runtime->trigger_master != substream) |
1044 | return 0; | |
1045 | if (! snd_pcm_running(substream)) | |
1046 | return 0; | |
1047 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1048 | return 0; /* suspend unconditionally */ | |
1049 | } | |
1050 | ||
877211f5 | 1051 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1052 | { |
877211f5 | 1053 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1054 | snd_pcm_trigger_tstamp(substream); |
1055 | if (substream->timer) | |
877211f5 TI |
1056 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
1057 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1058 | runtime->status->suspended_state = runtime->status->state; |
1059 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; | |
1da177e4 LT |
1060 | wake_up(&runtime->sleep); |
1061 | } | |
1062 | ||
1063 | static struct action_ops snd_pcm_action_suspend = { | |
1064 | .pre_action = snd_pcm_pre_suspend, | |
1065 | .do_action = snd_pcm_do_suspend, | |
1066 | .post_action = snd_pcm_post_suspend | |
1067 | }; | |
1068 | ||
1069 | /** | |
1c85cc64 | 1070 | * snd_pcm_suspend - trigger SUSPEND to all linked streams |
df8db936 | 1071 | * @substream: the PCM substream |
1da177e4 | 1072 | * |
1da177e4 LT |
1073 | * After this call, all streams are changed to SUSPENDED state. |
1074 | */ | |
877211f5 | 1075 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
1da177e4 LT |
1076 | { |
1077 | int err; | |
1078 | unsigned long flags; | |
1079 | ||
603bf524 TI |
1080 | if (! substream) |
1081 | return 0; | |
1082 | ||
1da177e4 LT |
1083 | snd_pcm_stream_lock_irqsave(substream, flags); |
1084 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); | |
1085 | snd_pcm_stream_unlock_irqrestore(substream, flags); | |
1086 | return err; | |
1087 | } | |
1088 | ||
e88e8ae6 TI |
1089 | EXPORT_SYMBOL(snd_pcm_suspend); |
1090 | ||
1da177e4 | 1091 | /** |
1c85cc64 | 1092 | * snd_pcm_suspend_all - trigger SUSPEND to all substreams in the given pcm |
df8db936 | 1093 | * @pcm: the PCM instance |
1da177e4 | 1094 | * |
1da177e4 LT |
1095 | * After this call, all streams are changed to SUSPENDED state. |
1096 | */ | |
877211f5 | 1097 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
1da177e4 | 1098 | { |
877211f5 | 1099 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1100 | int stream, err = 0; |
1101 | ||
603bf524 TI |
1102 | if (! pcm) |
1103 | return 0; | |
1104 | ||
1da177e4 | 1105 | for (stream = 0; stream < 2; stream++) { |
877211f5 TI |
1106 | for (substream = pcm->streams[stream].substream; |
1107 | substream; substream = substream->next) { | |
1da177e4 LT |
1108 | /* FIXME: the open/close code should lock this as well */ |
1109 | if (substream->runtime == NULL) | |
1110 | continue; | |
1111 | err = snd_pcm_suspend(substream); | |
1112 | if (err < 0 && err != -EBUSY) | |
1113 | return err; | |
1114 | } | |
1115 | } | |
1116 | return 0; | |
1117 | } | |
1118 | ||
e88e8ae6 TI |
1119 | EXPORT_SYMBOL(snd_pcm_suspend_all); |
1120 | ||
1da177e4 LT |
1121 | /* resume */ |
1122 | ||
877211f5 | 1123 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1124 | { |
877211f5 | 1125 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1126 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
1127 | return -ENOSYS; | |
1128 | runtime->trigger_master = substream; | |
1129 | return 0; | |
1130 | } | |
1131 | ||
877211f5 | 1132 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1133 | { |
877211f5 | 1134 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1135 | if (runtime->trigger_master != substream) |
1136 | return 0; | |
1137 | /* DMA not running previously? */ | |
1138 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && | |
1139 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || | |
1140 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
1141 | return 0; | |
1142 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); | |
1143 | } | |
1144 | ||
877211f5 | 1145 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1146 | { |
1147 | if (substream->runtime->trigger_master == substream && | |
1148 | snd_pcm_running(substream)) | |
1149 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1150 | } | |
1151 | ||
877211f5 | 1152 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1153 | { |
877211f5 | 1154 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1155 | snd_pcm_trigger_tstamp(substream); |
1156 | if (substream->timer) | |
877211f5 TI |
1157 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
1158 | &runtime->trigger_tstamp); | |
1da177e4 | 1159 | runtime->status->state = runtime->status->suspended_state; |
1da177e4 LT |
1160 | } |
1161 | ||
1162 | static struct action_ops snd_pcm_action_resume = { | |
1163 | .pre_action = snd_pcm_pre_resume, | |
1164 | .do_action = snd_pcm_do_resume, | |
1165 | .undo_action = snd_pcm_undo_resume, | |
1166 | .post_action = snd_pcm_post_resume | |
1167 | }; | |
1168 | ||
877211f5 | 1169 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 | 1170 | { |
877211f5 | 1171 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1172 | int res; |
1173 | ||
1174 | snd_power_lock(card); | |
cbac4b0c | 1175 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
1da177e4 LT |
1176 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
1177 | snd_power_unlock(card); | |
1178 | return res; | |
1179 | } | |
1180 | ||
1181 | #else | |
1182 | ||
877211f5 | 1183 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 LT |
1184 | { |
1185 | return -ENOSYS; | |
1186 | } | |
1187 | ||
1188 | #endif /* CONFIG_PM */ | |
1189 | ||
1190 | /* | |
1191 | * xrun ioctl | |
1192 | * | |
1193 | * Change the RUNNING stream(s) to XRUN state. | |
1194 | */ | |
877211f5 | 1195 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
1da177e4 | 1196 | { |
877211f5 TI |
1197 | struct snd_card *card = substream->pcm->card; |
1198 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
1199 | int result; |
1200 | ||
1201 | snd_power_lock(card); | |
1202 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1203 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1204 | if (result < 0) |
1205 | goto _unlock; | |
1206 | } | |
1207 | ||
1208 | snd_pcm_stream_lock_irq(substream); | |
1209 | switch (runtime->status->state) { | |
1210 | case SNDRV_PCM_STATE_XRUN: | |
1211 | result = 0; /* already there */ | |
1212 | break; | |
1213 | case SNDRV_PCM_STATE_RUNNING: | |
1214 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
1215 | break; | |
1216 | default: | |
1217 | result = -EBADFD; | |
1218 | } | |
1219 | snd_pcm_stream_unlock_irq(substream); | |
1220 | _unlock: | |
1221 | snd_power_unlock(card); | |
1222 | return result; | |
1223 | } | |
1224 | ||
1225 | /* | |
1226 | * reset ioctl | |
1227 | */ | |
877211f5 | 1228 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1229 | { |
877211f5 | 1230 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1231 | switch (runtime->status->state) { |
1232 | case SNDRV_PCM_STATE_RUNNING: | |
1233 | case SNDRV_PCM_STATE_PREPARED: | |
1234 | case SNDRV_PCM_STATE_PAUSED: | |
1235 | case SNDRV_PCM_STATE_SUSPENDED: | |
1236 | return 0; | |
1237 | default: | |
1238 | return -EBADFD; | |
1239 | } | |
1240 | } | |
1241 | ||
877211f5 | 1242 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1243 | { |
877211f5 | 1244 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1245 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
1246 | if (err < 0) | |
1247 | return err; | |
1da177e4 | 1248 | runtime->hw_ptr_base = 0; |
877211f5 TI |
1249 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
1250 | runtime->status->hw_ptr % runtime->period_size; | |
1da177e4 LT |
1251 | runtime->silence_start = runtime->status->hw_ptr; |
1252 | runtime->silence_filled = 0; | |
1253 | return 0; | |
1254 | } | |
1255 | ||
877211f5 | 1256 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1257 | { |
877211f5 | 1258 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1259 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1260 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
1261 | runtime->silence_size > 0) | |
1262 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1263 | } | |
1264 | ||
1265 | static struct action_ops snd_pcm_action_reset = { | |
1266 | .pre_action = snd_pcm_pre_reset, | |
1267 | .do_action = snd_pcm_do_reset, | |
1268 | .post_action = snd_pcm_post_reset | |
1269 | }; | |
1270 | ||
877211f5 | 1271 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
1da177e4 LT |
1272 | { |
1273 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); | |
1274 | } | |
1275 | ||
1276 | /* | |
1277 | * prepare ioctl | |
1278 | */ | |
0df63e44 TI |
1279 | /* we use the second argument for updating f_flags */ |
1280 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, | |
1281 | int f_flags) | |
1da177e4 | 1282 | { |
877211f5 | 1283 | struct snd_pcm_runtime *runtime = substream->runtime; |
de1b8b93 TI |
1284 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1285 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1286 | return -EBADFD; |
1287 | if (snd_pcm_running(substream)) | |
1288 | return -EBUSY; | |
0df63e44 | 1289 | substream->f_flags = f_flags; |
1da177e4 LT |
1290 | return 0; |
1291 | } | |
1292 | ||
877211f5 | 1293 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1294 | { |
1295 | int err; | |
1296 | err = substream->ops->prepare(substream); | |
1297 | if (err < 0) | |
1298 | return err; | |
1299 | return snd_pcm_do_reset(substream, 0); | |
1300 | } | |
1301 | ||
877211f5 | 1302 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1303 | { |
877211f5 | 1304 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1305 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1306 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; | |
1307 | } | |
1308 | ||
1309 | static struct action_ops snd_pcm_action_prepare = { | |
1310 | .pre_action = snd_pcm_pre_prepare, | |
1311 | .do_action = snd_pcm_do_prepare, | |
1312 | .post_action = snd_pcm_post_prepare | |
1313 | }; | |
1314 | ||
1315 | /** | |
1c85cc64 | 1316 | * snd_pcm_prepare - prepare the PCM substream to be triggerable |
df8db936 | 1317 | * @substream: the PCM substream instance |
0df63e44 | 1318 | * @file: file to refer f_flags |
1da177e4 | 1319 | */ |
0df63e44 TI |
1320 | static int snd_pcm_prepare(struct snd_pcm_substream *substream, |
1321 | struct file *file) | |
1da177e4 LT |
1322 | { |
1323 | int res; | |
877211f5 | 1324 | struct snd_card *card = substream->pcm->card; |
0df63e44 TI |
1325 | int f_flags; |
1326 | ||
1327 | if (file) | |
1328 | f_flags = file->f_flags; | |
1329 | else | |
1330 | f_flags = substream->f_flags; | |
1da177e4 LT |
1331 | |
1332 | snd_power_lock(card); | |
cbac4b0c | 1333 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
0df63e44 TI |
1334 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, |
1335 | substream, f_flags); | |
1da177e4 LT |
1336 | snd_power_unlock(card); |
1337 | return res; | |
1338 | } | |
1339 | ||
1340 | /* | |
1341 | * drain ioctl | |
1342 | */ | |
1343 | ||
877211f5 | 1344 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1345 | { |
1da177e4 LT |
1346 | substream->runtime->trigger_master = substream; |
1347 | return 0; | |
1348 | } | |
1349 | ||
877211f5 | 1350 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1351 | { |
877211f5 | 1352 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1353 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1354 | switch (runtime->status->state) { | |
1355 | case SNDRV_PCM_STATE_PREPARED: | |
1356 | /* start playback stream if possible */ | |
1357 | if (! snd_pcm_playback_empty(substream)) { | |
1358 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1359 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1360 | } | |
1361 | break; | |
1362 | case SNDRV_PCM_STATE_RUNNING: | |
1363 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; | |
1364 | break; | |
1365 | default: | |
1366 | break; | |
1367 | } | |
1368 | } else { | |
1369 | /* stop running stream */ | |
1370 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { | |
b05e5787 | 1371 | int new_state = snd_pcm_capture_avail(runtime) > 0 ? |
1da177e4 | 1372 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; |
b05e5787 MÅš |
1373 | snd_pcm_do_stop(substream, new_state); |
1374 | snd_pcm_post_stop(substream, new_state); | |
1da177e4 LT |
1375 | } |
1376 | } | |
1377 | return 0; | |
1378 | } | |
1379 | ||
877211f5 | 1380 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1381 | { |
1382 | } | |
1383 | ||
1384 | static struct action_ops snd_pcm_action_drain_init = { | |
1385 | .pre_action = snd_pcm_pre_drain_init, | |
1386 | .do_action = snd_pcm_do_drain_init, | |
1387 | .post_action = snd_pcm_post_drain_init | |
1388 | }; | |
1389 | ||
877211f5 | 1390 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
1da177e4 LT |
1391 | |
1392 | /* | |
1393 | * Drain the stream(s). | |
1394 | * When the substream is linked, sync until the draining of all playback streams | |
1395 | * is finished. | |
1396 | * After this call, all streams are supposed to be either SETUP or DRAINING | |
1397 | * (capture only) state. | |
1398 | */ | |
4cdc115f TI |
1399 | static int snd_pcm_drain(struct snd_pcm_substream *substream, |
1400 | struct file *file) | |
1da177e4 | 1401 | { |
877211f5 TI |
1402 | struct snd_card *card; |
1403 | struct snd_pcm_runtime *runtime; | |
ef991b95 | 1404 | struct snd_pcm_substream *s; |
d3a7dcfe | 1405 | wait_queue_t wait; |
1da177e4 | 1406 | int result = 0; |
4cdc115f | 1407 | int nonblock = 0; |
1da177e4 | 1408 | |
1da177e4 LT |
1409 | card = substream->pcm->card; |
1410 | runtime = substream->runtime; | |
1411 | ||
1412 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1413 | return -EBADFD; | |
1414 | ||
1da177e4 LT |
1415 | snd_power_lock(card); |
1416 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1417 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
21cb2a2e TI |
1418 | if (result < 0) { |
1419 | snd_power_unlock(card); | |
1420 | return result; | |
1421 | } | |
1da177e4 LT |
1422 | } |
1423 | ||
4cdc115f TI |
1424 | if (file) { |
1425 | if (file->f_flags & O_NONBLOCK) | |
1426 | nonblock = 1; | |
1427 | } else if (substream->f_flags & O_NONBLOCK) | |
1428 | nonblock = 1; | |
1429 | ||
21cb2a2e | 1430 | down_read(&snd_pcm_link_rwsem); |
21cb2a2e TI |
1431 | snd_pcm_stream_lock_irq(substream); |
1432 | /* resume pause */ | |
d3a7dcfe | 1433 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) |
21cb2a2e TI |
1434 | snd_pcm_pause(substream, 0); |
1435 | ||
1436 | /* pre-start/stop - all running streams are changed to DRAINING state */ | |
1437 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); | |
4cdc115f TI |
1438 | if (result < 0) |
1439 | goto unlock; | |
1440 | /* in non-blocking, we don't wait in ioctl but let caller poll */ | |
1441 | if (nonblock) { | |
1442 | result = -EAGAIN; | |
1443 | goto unlock; | |
21cb2a2e | 1444 | } |
1da177e4 LT |
1445 | |
1446 | for (;;) { | |
1447 | long tout; | |
d3a7dcfe | 1448 | struct snd_pcm_runtime *to_check; |
1da177e4 LT |
1449 | if (signal_pending(current)) { |
1450 | result = -ERESTARTSYS; | |
1451 | break; | |
1452 | } | |
d3a7dcfe TI |
1453 | /* find a substream to drain */ |
1454 | to_check = NULL; | |
1455 | snd_pcm_group_for_each_entry(s, substream) { | |
1456 | if (s->stream != SNDRV_PCM_STREAM_PLAYBACK) | |
1457 | continue; | |
1458 | runtime = s->runtime; | |
1459 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { | |
1460 | to_check = runtime; | |
21cb2a2e | 1461 | break; |
d3a7dcfe | 1462 | } |
21cb2a2e | 1463 | } |
d3a7dcfe TI |
1464 | if (!to_check) |
1465 | break; /* all drained */ | |
1466 | init_waitqueue_entry(&wait, current); | |
1467 | add_wait_queue(&to_check->sleep, &wait); | |
1da177e4 LT |
1468 | set_current_state(TASK_INTERRUPTIBLE); |
1469 | snd_pcm_stream_unlock_irq(substream); | |
d3a7dcfe | 1470 | up_read(&snd_pcm_link_rwsem); |
1da177e4 LT |
1471 | snd_power_unlock(card); |
1472 | tout = schedule_timeout(10 * HZ); | |
1473 | snd_power_lock(card); | |
d3a7dcfe | 1474 | down_read(&snd_pcm_link_rwsem); |
1da177e4 | 1475 | snd_pcm_stream_lock_irq(substream); |
d3a7dcfe | 1476 | remove_wait_queue(&to_check->sleep, &wait); |
1da177e4 LT |
1477 | if (tout == 0) { |
1478 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1479 | result = -ESTRPIPE; | |
1480 | else { | |
1481 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); | |
1482 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1483 | result = -EIO; | |
1484 | } | |
1485 | break; | |
1486 | } | |
1da177e4 | 1487 | } |
21cb2a2e | 1488 | |
4cdc115f | 1489 | unlock: |
21cb2a2e | 1490 | snd_pcm_stream_unlock_irq(substream); |
d3a7dcfe | 1491 | up_read(&snd_pcm_link_rwsem); |
1da177e4 | 1492 | snd_power_unlock(card); |
1da177e4 LT |
1493 | |
1494 | return result; | |
1495 | } | |
1496 | ||
1497 | /* | |
1498 | * drop ioctl | |
1499 | * | |
1500 | * Immediately put all linked substreams into SETUP state. | |
1501 | */ | |
877211f5 | 1502 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
1da177e4 | 1503 | { |
877211f5 TI |
1504 | struct snd_pcm_runtime *runtime; |
1505 | struct snd_card *card; | |
1da177e4 LT |
1506 | int result = 0; |
1507 | ||
7eaa943c TI |
1508 | if (PCM_RUNTIME_CHECK(substream)) |
1509 | return -ENXIO; | |
1da177e4 LT |
1510 | runtime = substream->runtime; |
1511 | card = substream->pcm->card; | |
1512 | ||
de1b8b93 | 1513 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
24e8fc49 TI |
1514 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED || |
1515 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1da177e4 LT |
1516 | return -EBADFD; |
1517 | ||
1da177e4 LT |
1518 | snd_pcm_stream_lock_irq(substream); |
1519 | /* resume pause */ | |
1520 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1521 | snd_pcm_pause(substream, 0); | |
1522 | ||
1523 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1524 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ | |
1525 | snd_pcm_stream_unlock_irq(substream); | |
24e8fc49 | 1526 | |
1da177e4 LT |
1527 | return result; |
1528 | } | |
1529 | ||
1530 | ||
1531 | /* WARNING: Don't forget to fput back the file */ | |
1da177e4 LT |
1532 | static struct file *snd_pcm_file_fd(int fd) |
1533 | { | |
1534 | struct file *file; | |
1535 | struct inode *inode; | |
f87135f5 CL |
1536 | unsigned int minor; |
1537 | ||
1da177e4 LT |
1538 | file = fget(fd); |
1539 | if (!file) | |
1540 | return NULL; | |
7bc56323 | 1541 | inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
1542 | if (!S_ISCHR(inode->i_mode) || |
1543 | imajor(inode) != snd_major) { | |
1544 | fput(file); | |
1545 | return NULL; | |
1546 | } | |
1547 | minor = iminor(inode); | |
f87135f5 CL |
1548 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
1549 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { | |
1da177e4 LT |
1550 | fput(file); |
1551 | return NULL; | |
1552 | } | |
1553 | return file; | |
1554 | } | |
1555 | ||
1556 | /* | |
1557 | * PCM link handling | |
1558 | */ | |
877211f5 | 1559 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
1da177e4 LT |
1560 | { |
1561 | int res = 0; | |
1562 | struct file *file; | |
877211f5 TI |
1563 | struct snd_pcm_file *pcm_file; |
1564 | struct snd_pcm_substream *substream1; | |
1da177e4 LT |
1565 | |
1566 | file = snd_pcm_file_fd(fd); | |
1567 | if (!file) | |
1568 | return -EBADFD; | |
1569 | pcm_file = file->private_data; | |
1570 | substream1 = pcm_file->substream; | |
1571 | down_write(&snd_pcm_link_rwsem); | |
1572 | write_lock_irq(&snd_pcm_link_rwlock); | |
1573 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || | |
1574 | substream->runtime->status->state != substream1->runtime->status->state) { | |
1575 | res = -EBADFD; | |
1576 | goto _end; | |
1577 | } | |
1578 | if (snd_pcm_stream_linked(substream1)) { | |
1579 | res = -EALREADY; | |
1580 | goto _end; | |
1581 | } | |
1582 | if (!snd_pcm_stream_linked(substream)) { | |
877211f5 | 1583 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
1da177e4 LT |
1584 | if (substream->group == NULL) { |
1585 | res = -ENOMEM; | |
1586 | goto _end; | |
1587 | } | |
1588 | spin_lock_init(&substream->group->lock); | |
1589 | INIT_LIST_HEAD(&substream->group->substreams); | |
1590 | list_add_tail(&substream->link_list, &substream->group->substreams); | |
1591 | substream->group->count = 1; | |
1592 | } | |
1593 | list_add_tail(&substream1->link_list, &substream->group->substreams); | |
1594 | substream->group->count++; | |
1595 | substream1->group = substream->group; | |
1596 | _end: | |
1597 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1598 | up_write(&snd_pcm_link_rwsem); | |
1599 | fput(file); | |
1600 | return res; | |
1601 | } | |
1602 | ||
877211f5 | 1603 | static void relink_to_local(struct snd_pcm_substream *substream) |
1da177e4 LT |
1604 | { |
1605 | substream->group = &substream->self_group; | |
1606 | INIT_LIST_HEAD(&substream->self_group.substreams); | |
1607 | list_add_tail(&substream->link_list, &substream->self_group.substreams); | |
1608 | } | |
1609 | ||
877211f5 | 1610 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
1da177e4 | 1611 | { |
ef991b95 | 1612 | struct snd_pcm_substream *s; |
1da177e4 LT |
1613 | int res = 0; |
1614 | ||
1615 | down_write(&snd_pcm_link_rwsem); | |
1616 | write_lock_irq(&snd_pcm_link_rwlock); | |
1617 | if (!snd_pcm_stream_linked(substream)) { | |
1618 | res = -EALREADY; | |
1619 | goto _end; | |
1620 | } | |
1621 | list_del(&substream->link_list); | |
1622 | substream->group->count--; | |
1623 | if (substream->group->count == 1) { /* detach the last stream, too */ | |
ef991b95 TI |
1624 | snd_pcm_group_for_each_entry(s, substream) { |
1625 | relink_to_local(s); | |
1da177e4 LT |
1626 | break; |
1627 | } | |
1628 | kfree(substream->group); | |
1629 | } | |
1630 | relink_to_local(substream); | |
1631 | _end: | |
1632 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1633 | up_write(&snd_pcm_link_rwsem); | |
1634 | return res; | |
1635 | } | |
1636 | ||
1637 | /* | |
1638 | * hw configurator | |
1639 | */ | |
877211f5 TI |
1640 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
1641 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1642 | { |
877211f5 | 1643 | struct snd_interval t; |
1da177e4 LT |
1644 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
1645 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1646 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1647 | } | |
1648 | ||
877211f5 TI |
1649 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
1650 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1651 | { |
877211f5 | 1652 | struct snd_interval t; |
1da177e4 LT |
1653 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
1654 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1655 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1656 | } | |
1657 | ||
877211f5 TI |
1658 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
1659 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1660 | { |
877211f5 | 1661 | struct snd_interval t; |
1da177e4 LT |
1662 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
1663 | hw_param_interval_c(params, rule->deps[1]), | |
1664 | (unsigned long) rule->private, &t); | |
1665 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1666 | } | |
1667 | ||
877211f5 TI |
1668 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
1669 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1670 | { |
877211f5 | 1671 | struct snd_interval t; |
1da177e4 LT |
1672 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
1673 | (unsigned long) rule->private, | |
1674 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1675 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1676 | } | |
1677 | ||
877211f5 TI |
1678 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
1679 | struct snd_pcm_hw_rule *rule) | |
1da177e4 LT |
1680 | { |
1681 | unsigned int k; | |
877211f5 TI |
1682 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
1683 | struct snd_mask m; | |
1684 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1685 | snd_mask_any(&m); |
1686 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1687 | int bits; | |
1688 | if (! snd_mask_test(mask, k)) | |
1689 | continue; | |
1690 | bits = snd_pcm_format_physical_width(k); | |
1691 | if (bits <= 0) | |
1692 | continue; /* ignore invalid formats */ | |
1693 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) | |
1694 | snd_mask_reset(&m, k); | |
1695 | } | |
1696 | return snd_mask_refine(mask, &m); | |
1697 | } | |
1698 | ||
877211f5 TI |
1699 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
1700 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1701 | { |
877211f5 | 1702 | struct snd_interval t; |
1da177e4 LT |
1703 | unsigned int k; |
1704 | t.min = UINT_MAX; | |
1705 | t.max = 0; | |
1706 | t.openmin = 0; | |
1707 | t.openmax = 0; | |
1708 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1709 | int bits; | |
1710 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) | |
1711 | continue; | |
1712 | bits = snd_pcm_format_physical_width(k); | |
1713 | if (bits <= 0) | |
1714 | continue; /* ignore invalid formats */ | |
1715 | if (t.min > (unsigned)bits) | |
1716 | t.min = bits; | |
1717 | if (t.max < (unsigned)bits) | |
1718 | t.max = bits; | |
1719 | } | |
1720 | t.integer = 1; | |
1721 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1722 | } | |
1723 | ||
1724 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 | |
1725 | #error "Change this table" | |
1726 | #endif | |
1727 | ||
1728 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
1729 | 48000, 64000, 88200, 96000, 176400, 192000 }; | |
1730 | ||
7653d557 CL |
1731 | const struct snd_pcm_hw_constraint_list snd_pcm_known_rates = { |
1732 | .count = ARRAY_SIZE(rates), | |
1733 | .list = rates, | |
1734 | }; | |
1735 | ||
877211f5 TI |
1736 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
1737 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1738 | { |
877211f5 | 1739 | struct snd_pcm_hardware *hw = rule->private; |
1da177e4 | 1740 | return snd_interval_list(hw_param_interval(params, rule->var), |
7653d557 CL |
1741 | snd_pcm_known_rates.count, |
1742 | snd_pcm_known_rates.list, hw->rates); | |
1da177e4 LT |
1743 | } |
1744 | ||
877211f5 TI |
1745 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
1746 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1747 | { |
877211f5 TI |
1748 | struct snd_interval t; |
1749 | struct snd_pcm_substream *substream = rule->private; | |
1da177e4 LT |
1750 | t.min = 0; |
1751 | t.max = substream->buffer_bytes_max; | |
1752 | t.openmin = 0; | |
1753 | t.openmax = 0; | |
1754 | t.integer = 1; | |
1755 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1756 | } | |
1757 | ||
877211f5 | 1758 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
1da177e4 | 1759 | { |
877211f5 TI |
1760 | struct snd_pcm_runtime *runtime = substream->runtime; |
1761 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; | |
1da177e4 LT |
1762 | int k, err; |
1763 | ||
1764 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
1765 | snd_mask_any(constrs_mask(constrs, k)); | |
1766 | } | |
1767 | ||
1768 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
1769 | snd_interval_any(constrs_interval(constrs, k)); | |
1770 | } | |
1771 | ||
1772 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); | |
1773 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); | |
1774 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); | |
1775 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); | |
1776 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); | |
1777 | ||
1778 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1779 | snd_pcm_hw_rule_format, NULL, | |
1780 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1781 | if (err < 0) | |
1782 | return err; | |
1783 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1784 | snd_pcm_hw_rule_sample_bits, NULL, | |
1785 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1786 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1787 | if (err < 0) | |
1788 | return err; | |
1789 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1790 | snd_pcm_hw_rule_div, NULL, | |
1791 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1792 | if (err < 0) | |
1793 | return err; | |
1794 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1795 | snd_pcm_hw_rule_mul, NULL, | |
1796 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1797 | if (err < 0) | |
1798 | return err; | |
1799 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1800 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1801 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1802 | if (err < 0) | |
1803 | return err; | |
1804 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1805 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1806 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
1807 | if (err < 0) | |
1808 | return err; | |
1809 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1810 | snd_pcm_hw_rule_div, NULL, | |
1811 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1812 | if (err < 0) | |
1813 | return err; | |
1814 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1815 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1816 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); | |
1817 | if (err < 0) | |
1818 | return err; | |
1819 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1820 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1821 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); | |
1822 | if (err < 0) | |
1823 | return err; | |
1824 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1825 | snd_pcm_hw_rule_div, NULL, | |
1826 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1827 | if (err < 0) | |
1828 | return err; | |
1829 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1830 | snd_pcm_hw_rule_div, NULL, | |
1831 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1832 | if (err < 0) | |
1833 | return err; | |
1834 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1835 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1836 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1837 | if (err < 0) | |
1838 | return err; | |
1839 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1840 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1841 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1842 | if (err < 0) | |
1843 | return err; | |
1844 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1845 | snd_pcm_hw_rule_mul, NULL, | |
1846 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1847 | if (err < 0) | |
1848 | return err; | |
1849 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1850 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1851 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1852 | if (err < 0) | |
1853 | return err; | |
1854 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1855 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1856 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1857 | if (err < 0) | |
1858 | return err; | |
1859 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1860 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1861 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1862 | if (err < 0) | |
1863 | return err; | |
1864 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1865 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1866 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1867 | if (err < 0) | |
1868 | return err; | |
1869 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1870 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1871 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1872 | if (err < 0) | |
1873 | return err; | |
1874 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, | |
1875 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1876 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1877 | if (err < 0) | |
1878 | return err; | |
1879 | return 0; | |
1880 | } | |
1881 | ||
877211f5 | 1882 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
1da177e4 | 1883 | { |
877211f5 TI |
1884 | struct snd_pcm_runtime *runtime = substream->runtime; |
1885 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1da177e4 LT |
1886 | int err; |
1887 | unsigned int mask = 0; | |
1888 | ||
1889 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1890 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; | |
1891 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1892 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; | |
1893 | if (hw->info & SNDRV_PCM_INFO_MMAP) { | |
1894 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1895 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
1896 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1897 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; | |
1898 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) | |
1899 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; | |
1900 | } | |
1901 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); | |
7eaa943c TI |
1902 | if (err < 0) |
1903 | return err; | |
1da177e4 LT |
1904 | |
1905 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); | |
7eaa943c TI |
1906 | if (err < 0) |
1907 | return err; | |
1da177e4 LT |
1908 | |
1909 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); | |
7eaa943c TI |
1910 | if (err < 0) |
1911 | return err; | |
1da177e4 LT |
1912 | |
1913 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1914 | hw->channels_min, hw->channels_max); | |
7eaa943c TI |
1915 | if (err < 0) |
1916 | return err; | |
1da177e4 LT |
1917 | |
1918 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, | |
1919 | hw->rate_min, hw->rate_max); | |
7eaa943c TI |
1920 | if (err < 0) |
1921 | return err; | |
1da177e4 LT |
1922 | |
1923 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1924 | hw->period_bytes_min, hw->period_bytes_max); | |
7eaa943c TI |
1925 | if (err < 0) |
1926 | return err; | |
1da177e4 LT |
1927 | |
1928 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, | |
1929 | hw->periods_min, hw->periods_max); | |
7eaa943c TI |
1930 | if (err < 0) |
1931 | return err; | |
1da177e4 LT |
1932 | |
1933 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1934 | hw->period_bytes_min, hw->buffer_bytes_max); | |
7eaa943c TI |
1935 | if (err < 0) |
1936 | return err; | |
1da177e4 LT |
1937 | |
1938 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1939 | snd_pcm_hw_rule_buffer_bytes_max, substream, | |
1940 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); | |
1941 | if (err < 0) | |
1942 | return err; | |
1943 | ||
1944 | /* FIXME: remove */ | |
1945 | if (runtime->dma_bytes) { | |
1946 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); | |
7eaa943c TI |
1947 | if (err < 0) |
1948 | return -EINVAL; | |
1da177e4 LT |
1949 | } |
1950 | ||
1951 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { | |
1952 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1953 | snd_pcm_hw_rule_rate, hw, | |
1954 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
1955 | if (err < 0) | |
1956 | return err; | |
1957 | } | |
1958 | ||
1959 | /* FIXME: this belong to lowlevel */ | |
1da177e4 LT |
1960 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); |
1961 | ||
1962 | return 0; | |
1963 | } | |
1964 | ||
3bf75f9b | 1965 | static void pcm_release_private(struct snd_pcm_substream *substream) |
1da177e4 | 1966 | { |
1da177e4 | 1967 | snd_pcm_unlink(substream); |
3bf75f9b TI |
1968 | } |
1969 | ||
1970 | void snd_pcm_release_substream(struct snd_pcm_substream *substream) | |
1971 | { | |
0df63e44 TI |
1972 | substream->ref_count--; |
1973 | if (substream->ref_count > 0) | |
1974 | return; | |
1975 | ||
3bf75f9b | 1976 | snd_pcm_drop(substream); |
3bf75f9b | 1977 | if (substream->hw_opened) { |
1da177e4 LT |
1978 | if (substream->ops->hw_free != NULL) |
1979 | substream->ops->hw_free(substream); | |
1980 | substream->ops->close(substream); | |
3bf75f9b | 1981 | substream->hw_opened = 0; |
1da177e4 | 1982 | } |
1576274d TI |
1983 | if (substream->pcm_release) { |
1984 | substream->pcm_release(substream); | |
1985 | substream->pcm_release = NULL; | |
1986 | } | |
3bf75f9b TI |
1987 | snd_pcm_detach_substream(substream); |
1988 | } | |
1989 | ||
e88e8ae6 TI |
1990 | EXPORT_SYMBOL(snd_pcm_release_substream); |
1991 | ||
3bf75f9b TI |
1992 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, |
1993 | struct file *file, | |
1994 | struct snd_pcm_substream **rsubstream) | |
1995 | { | |
1996 | struct snd_pcm_substream *substream; | |
1997 | int err; | |
1998 | ||
1999 | err = snd_pcm_attach_substream(pcm, stream, file, &substream); | |
2000 | if (err < 0) | |
2001 | return err; | |
0df63e44 TI |
2002 | if (substream->ref_count > 1) { |
2003 | *rsubstream = substream; | |
2004 | return 0; | |
2005 | } | |
2006 | ||
3bf75f9b TI |
2007 | err = snd_pcm_hw_constraints_init(substream); |
2008 | if (err < 0) { | |
2009 | snd_printd("snd_pcm_hw_constraints_init failed\n"); | |
2010 | goto error; | |
2011 | } | |
2012 | ||
2013 | if ((err = substream->ops->open(substream)) < 0) | |
2014 | goto error; | |
2015 | ||
2016 | substream->hw_opened = 1; | |
2017 | ||
2018 | err = snd_pcm_hw_constraints_complete(substream); | |
2019 | if (err < 0) { | |
2020 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); | |
2021 | goto error; | |
2022 | } | |
2023 | ||
2024 | *rsubstream = substream; | |
1da177e4 | 2025 | return 0; |
3bf75f9b TI |
2026 | |
2027 | error: | |
2028 | snd_pcm_release_substream(substream); | |
2029 | return err; | |
1da177e4 LT |
2030 | } |
2031 | ||
e88e8ae6 TI |
2032 | EXPORT_SYMBOL(snd_pcm_open_substream); |
2033 | ||
1da177e4 | 2034 | static int snd_pcm_open_file(struct file *file, |
877211f5 | 2035 | struct snd_pcm *pcm, |
1da177e4 | 2036 | int stream, |
877211f5 | 2037 | struct snd_pcm_file **rpcm_file) |
1da177e4 | 2038 | { |
877211f5 TI |
2039 | struct snd_pcm_file *pcm_file; |
2040 | struct snd_pcm_substream *substream; | |
2041 | struct snd_pcm_str *str; | |
3bf75f9b | 2042 | int err; |
1da177e4 | 2043 | |
7eaa943c TI |
2044 | if (rpcm_file) |
2045 | *rpcm_file = NULL; | |
1da177e4 | 2046 | |
3bf75f9b TI |
2047 | err = snd_pcm_open_substream(pcm, stream, file, &substream); |
2048 | if (err < 0) | |
2049 | return err; | |
2050 | ||
548a648b TI |
2051 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
2052 | if (pcm_file == NULL) { | |
2053 | snd_pcm_release_substream(substream); | |
2054 | return -ENOMEM; | |
2055 | } | |
2056 | pcm_file->substream = substream; | |
2057 | if (substream->ref_count == 1) { | |
0df63e44 TI |
2058 | str = substream->pstr; |
2059 | substream->file = pcm_file; | |
2060 | substream->pcm_release = pcm_release_private; | |
1da177e4 | 2061 | } |
1da177e4 | 2062 | file->private_data = pcm_file; |
7eaa943c TI |
2063 | if (rpcm_file) |
2064 | *rpcm_file = pcm_file; | |
1da177e4 LT |
2065 | return 0; |
2066 | } | |
2067 | ||
f87135f5 CL |
2068 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
2069 | { | |
2070 | struct snd_pcm *pcm; | |
2071 | ||
2072 | pcm = snd_lookup_minor_data(iminor(inode), | |
2073 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); | |
2074 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); | |
2075 | } | |
2076 | ||
2077 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) | |
1da177e4 | 2078 | { |
877211f5 | 2079 | struct snd_pcm *pcm; |
f87135f5 CL |
2080 | |
2081 | pcm = snd_lookup_minor_data(iminor(inode), | |
2082 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); | |
2083 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); | |
2084 | } | |
2085 | ||
2086 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) | |
2087 | { | |
2088 | int err; | |
877211f5 | 2089 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2090 | wait_queue_t wait; |
2091 | ||
1da177e4 LT |
2092 | if (pcm == NULL) { |
2093 | err = -ENODEV; | |
2094 | goto __error1; | |
2095 | } | |
2096 | err = snd_card_file_add(pcm->card, file); | |
2097 | if (err < 0) | |
2098 | goto __error1; | |
2099 | if (!try_module_get(pcm->card->module)) { | |
2100 | err = -EFAULT; | |
2101 | goto __error2; | |
2102 | } | |
2103 | init_waitqueue_entry(&wait, current); | |
2104 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2105 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2106 | while (1) { |
f87135f5 | 2107 | err = snd_pcm_open_file(file, pcm, stream, &pcm_file); |
1da177e4 LT |
2108 | if (err >= 0) |
2109 | break; | |
2110 | if (err == -EAGAIN) { | |
2111 | if (file->f_flags & O_NONBLOCK) { | |
2112 | err = -EBUSY; | |
2113 | break; | |
2114 | } | |
2115 | } else | |
2116 | break; | |
2117 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2118 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2119 | schedule(); |
1a60d4c5 | 2120 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2121 | if (signal_pending(current)) { |
2122 | err = -ERESTARTSYS; | |
2123 | break; | |
2124 | } | |
2125 | } | |
2126 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2127 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2128 | if (err < 0) |
2129 | goto __error; | |
2130 | return err; | |
2131 | ||
2132 | __error: | |
2133 | module_put(pcm->card->module); | |
2134 | __error2: | |
2135 | snd_card_file_remove(pcm->card, file); | |
2136 | __error1: | |
2137 | return err; | |
2138 | } | |
2139 | ||
2140 | static int snd_pcm_release(struct inode *inode, struct file *file) | |
2141 | { | |
877211f5 TI |
2142 | struct snd_pcm *pcm; |
2143 | struct snd_pcm_substream *substream; | |
2144 | struct snd_pcm_file *pcm_file; | |
1da177e4 LT |
2145 | |
2146 | pcm_file = file->private_data; | |
2147 | substream = pcm_file->substream; | |
7eaa943c TI |
2148 | if (snd_BUG_ON(!substream)) |
2149 | return -ENXIO; | |
1da177e4 | 2150 | pcm = substream->pcm; |
1a60d4c5 | 2151 | mutex_lock(&pcm->open_mutex); |
3bf75f9b | 2152 | snd_pcm_release_substream(substream); |
548a648b | 2153 | kfree(pcm_file); |
1a60d4c5 | 2154 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2155 | wake_up(&pcm->open_wait); |
2156 | module_put(pcm->card->module); | |
2157 | snd_card_file_remove(pcm->card, file); | |
2158 | return 0; | |
2159 | } | |
2160 | ||
877211f5 TI |
2161 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
2162 | snd_pcm_uframes_t frames) | |
1da177e4 | 2163 | { |
877211f5 | 2164 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2165 | snd_pcm_sframes_t appl_ptr; |
2166 | snd_pcm_sframes_t ret; | |
2167 | snd_pcm_sframes_t hw_avail; | |
2168 | ||
2169 | if (frames == 0) | |
2170 | return 0; | |
2171 | ||
2172 | snd_pcm_stream_lock_irq(substream); | |
2173 | switch (runtime->status->state) { | |
2174 | case SNDRV_PCM_STATE_PREPARED: | |
2175 | break; | |
2176 | case SNDRV_PCM_STATE_DRAINING: | |
2177 | case SNDRV_PCM_STATE_RUNNING: | |
2178 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2179 | break; | |
2180 | /* Fall through */ | |
2181 | case SNDRV_PCM_STATE_XRUN: | |
2182 | ret = -EPIPE; | |
2183 | goto __end; | |
51840409 LR |
2184 | case SNDRV_PCM_STATE_SUSPENDED: |
2185 | ret = -ESTRPIPE; | |
2186 | goto __end; | |
1da177e4 LT |
2187 | default: |
2188 | ret = -EBADFD; | |
2189 | goto __end; | |
2190 | } | |
2191 | ||
2192 | hw_avail = snd_pcm_playback_hw_avail(runtime); | |
2193 | if (hw_avail <= 0) { | |
2194 | ret = 0; | |
2195 | goto __end; | |
2196 | } | |
2197 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2198 | frames = hw_avail; | |
1da177e4 LT |
2199 | appl_ptr = runtime->control->appl_ptr - frames; |
2200 | if (appl_ptr < 0) | |
2201 | appl_ptr += runtime->boundary; | |
2202 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2203 | ret = frames; |
2204 | __end: | |
2205 | snd_pcm_stream_unlock_irq(substream); | |
2206 | return ret; | |
2207 | } | |
2208 | ||
877211f5 TI |
2209 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
2210 | snd_pcm_uframes_t frames) | |
1da177e4 | 2211 | { |
877211f5 | 2212 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2213 | snd_pcm_sframes_t appl_ptr; |
2214 | snd_pcm_sframes_t ret; | |
2215 | snd_pcm_sframes_t hw_avail; | |
2216 | ||
2217 | if (frames == 0) | |
2218 | return 0; | |
2219 | ||
2220 | snd_pcm_stream_lock_irq(substream); | |
2221 | switch (runtime->status->state) { | |
2222 | case SNDRV_PCM_STATE_PREPARED: | |
2223 | case SNDRV_PCM_STATE_DRAINING: | |
2224 | break; | |
2225 | case SNDRV_PCM_STATE_RUNNING: | |
2226 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2227 | break; | |
2228 | /* Fall through */ | |
2229 | case SNDRV_PCM_STATE_XRUN: | |
2230 | ret = -EPIPE; | |
2231 | goto __end; | |
51840409 LR |
2232 | case SNDRV_PCM_STATE_SUSPENDED: |
2233 | ret = -ESTRPIPE; | |
2234 | goto __end; | |
1da177e4 LT |
2235 | default: |
2236 | ret = -EBADFD; | |
2237 | goto __end; | |
2238 | } | |
2239 | ||
2240 | hw_avail = snd_pcm_capture_hw_avail(runtime); | |
2241 | if (hw_avail <= 0) { | |
2242 | ret = 0; | |
2243 | goto __end; | |
2244 | } | |
2245 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2246 | frames = hw_avail; | |
1da177e4 LT |
2247 | appl_ptr = runtime->control->appl_ptr - frames; |
2248 | if (appl_ptr < 0) | |
2249 | appl_ptr += runtime->boundary; | |
2250 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2251 | ret = frames; |
2252 | __end: | |
2253 | snd_pcm_stream_unlock_irq(substream); | |
2254 | return ret; | |
2255 | } | |
2256 | ||
877211f5 TI |
2257 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
2258 | snd_pcm_uframes_t frames) | |
1da177e4 | 2259 | { |
877211f5 | 2260 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2261 | snd_pcm_sframes_t appl_ptr; |
2262 | snd_pcm_sframes_t ret; | |
2263 | snd_pcm_sframes_t avail; | |
2264 | ||
2265 | if (frames == 0) | |
2266 | return 0; | |
2267 | ||
2268 | snd_pcm_stream_lock_irq(substream); | |
2269 | switch (runtime->status->state) { | |
2270 | case SNDRV_PCM_STATE_PREPARED: | |
2271 | case SNDRV_PCM_STATE_PAUSED: | |
2272 | break; | |
2273 | case SNDRV_PCM_STATE_DRAINING: | |
2274 | case SNDRV_PCM_STATE_RUNNING: | |
2275 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2276 | break; | |
2277 | /* Fall through */ | |
2278 | case SNDRV_PCM_STATE_XRUN: | |
2279 | ret = -EPIPE; | |
2280 | goto __end; | |
51840409 LR |
2281 | case SNDRV_PCM_STATE_SUSPENDED: |
2282 | ret = -ESTRPIPE; | |
2283 | goto __end; | |
1da177e4 LT |
2284 | default: |
2285 | ret = -EBADFD; | |
2286 | goto __end; | |
2287 | } | |
2288 | ||
2289 | avail = snd_pcm_playback_avail(runtime); | |
2290 | if (avail <= 0) { | |
2291 | ret = 0; | |
2292 | goto __end; | |
2293 | } | |
2294 | if (frames > (snd_pcm_uframes_t)avail) | |
2295 | frames = avail; | |
1da177e4 LT |
2296 | appl_ptr = runtime->control->appl_ptr + frames; |
2297 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2298 | appl_ptr -= runtime->boundary; | |
2299 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2300 | ret = frames; |
2301 | __end: | |
2302 | snd_pcm_stream_unlock_irq(substream); | |
2303 | return ret; | |
2304 | } | |
2305 | ||
877211f5 TI |
2306 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
2307 | snd_pcm_uframes_t frames) | |
1da177e4 | 2308 | { |
877211f5 | 2309 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2310 | snd_pcm_sframes_t appl_ptr; |
2311 | snd_pcm_sframes_t ret; | |
2312 | snd_pcm_sframes_t avail; | |
2313 | ||
2314 | if (frames == 0) | |
2315 | return 0; | |
2316 | ||
2317 | snd_pcm_stream_lock_irq(substream); | |
2318 | switch (runtime->status->state) { | |
2319 | case SNDRV_PCM_STATE_PREPARED: | |
2320 | case SNDRV_PCM_STATE_DRAINING: | |
2321 | case SNDRV_PCM_STATE_PAUSED: | |
2322 | break; | |
2323 | case SNDRV_PCM_STATE_RUNNING: | |
2324 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2325 | break; | |
2326 | /* Fall through */ | |
2327 | case SNDRV_PCM_STATE_XRUN: | |
2328 | ret = -EPIPE; | |
2329 | goto __end; | |
51840409 LR |
2330 | case SNDRV_PCM_STATE_SUSPENDED: |
2331 | ret = -ESTRPIPE; | |
2332 | goto __end; | |
1da177e4 LT |
2333 | default: |
2334 | ret = -EBADFD; | |
2335 | goto __end; | |
2336 | } | |
2337 | ||
2338 | avail = snd_pcm_capture_avail(runtime); | |
2339 | if (avail <= 0) { | |
2340 | ret = 0; | |
2341 | goto __end; | |
2342 | } | |
2343 | if (frames > (snd_pcm_uframes_t)avail) | |
2344 | frames = avail; | |
1da177e4 LT |
2345 | appl_ptr = runtime->control->appl_ptr + frames; |
2346 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2347 | appl_ptr -= runtime->boundary; | |
2348 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2349 | ret = frames; |
2350 | __end: | |
2351 | snd_pcm_stream_unlock_irq(substream); | |
2352 | return ret; | |
2353 | } | |
2354 | ||
877211f5 | 2355 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
1da177e4 | 2356 | { |
877211f5 | 2357 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2358 | int err; |
2359 | ||
2360 | snd_pcm_stream_lock_irq(substream); | |
2361 | switch (runtime->status->state) { | |
2362 | case SNDRV_PCM_STATE_DRAINING: | |
2363 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2364 | goto __badfd; | |
2365 | case SNDRV_PCM_STATE_RUNNING: | |
2366 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2367 | break; | |
2368 | /* Fall through */ | |
2369 | case SNDRV_PCM_STATE_PREPARED: | |
2370 | case SNDRV_PCM_STATE_SUSPENDED: | |
2371 | err = 0; | |
2372 | break; | |
2373 | case SNDRV_PCM_STATE_XRUN: | |
2374 | err = -EPIPE; | |
2375 | break; | |
2376 | default: | |
2377 | __badfd: | |
2378 | err = -EBADFD; | |
2379 | break; | |
2380 | } | |
2381 | snd_pcm_stream_unlock_irq(substream); | |
2382 | return err; | |
2383 | } | |
2384 | ||
877211f5 TI |
2385 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
2386 | snd_pcm_sframes_t __user *res) | |
1da177e4 | 2387 | { |
877211f5 | 2388 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2389 | int err; |
2390 | snd_pcm_sframes_t n = 0; | |
2391 | ||
2392 | snd_pcm_stream_lock_irq(substream); | |
2393 | switch (runtime->status->state) { | |
2394 | case SNDRV_PCM_STATE_DRAINING: | |
2395 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2396 | goto __badfd; | |
2397 | case SNDRV_PCM_STATE_RUNNING: | |
2398 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2399 | break; | |
2400 | /* Fall through */ | |
2401 | case SNDRV_PCM_STATE_PREPARED: | |
2402 | case SNDRV_PCM_STATE_SUSPENDED: | |
2403 | err = 0; | |
2404 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2405 | n = snd_pcm_playback_hw_avail(runtime); | |
2406 | else | |
2407 | n = snd_pcm_capture_avail(runtime); | |
4bbe1ddf | 2408 | n += runtime->delay; |
1da177e4 LT |
2409 | break; |
2410 | case SNDRV_PCM_STATE_XRUN: | |
2411 | err = -EPIPE; | |
2412 | break; | |
2413 | default: | |
2414 | __badfd: | |
2415 | err = -EBADFD; | |
2416 | break; | |
2417 | } | |
2418 | snd_pcm_stream_unlock_irq(substream); | |
2419 | if (!err) | |
2420 | if (put_user(n, res)) | |
2421 | err = -EFAULT; | |
2422 | return err; | |
2423 | } | |
2424 | ||
877211f5 TI |
2425 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
2426 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
1da177e4 | 2427 | { |
877211f5 TI |
2428 | struct snd_pcm_runtime *runtime = substream->runtime; |
2429 | struct snd_pcm_sync_ptr sync_ptr; | |
2430 | volatile struct snd_pcm_mmap_status *status; | |
2431 | volatile struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
2432 | int err; |
2433 | ||
2434 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
2435 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
2436 | return -EFAULT; | |
877211f5 | 2437 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
2438 | return -EFAULT; |
2439 | status = runtime->status; | |
2440 | control = runtime->control; | |
2441 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
2442 | err = snd_pcm_hwsync(substream); | |
2443 | if (err < 0) | |
2444 | return err; | |
2445 | } | |
2446 | snd_pcm_stream_lock_irq(substream); | |
2447 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) | |
2448 | control->appl_ptr = sync_ptr.c.control.appl_ptr; | |
2449 | else | |
2450 | sync_ptr.c.control.appl_ptr = control->appl_ptr; | |
2451 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
2452 | control->avail_min = sync_ptr.c.control.avail_min; | |
2453 | else | |
2454 | sync_ptr.c.control.avail_min = control->avail_min; | |
2455 | sync_ptr.s.status.state = status->state; | |
2456 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
2457 | sync_ptr.s.status.tstamp = status->tstamp; | |
2458 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
2459 | snd_pcm_stream_unlock_irq(substream); | |
2460 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) | |
2461 | return -EFAULT; | |
2462 | return 0; | |
2463 | } | |
b751eef1 JK |
2464 | |
2465 | static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg) | |
2466 | { | |
2467 | struct snd_pcm_runtime *runtime = substream->runtime; | |
2468 | int arg; | |
2469 | ||
2470 | if (get_user(arg, _arg)) | |
2471 | return -EFAULT; | |
2472 | if (arg < 0 || arg > SNDRV_PCM_TSTAMP_TYPE_LAST) | |
2473 | return -EINVAL; | |
2474 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY; | |
2475 | if (arg == SNDRV_PCM_TSTAMP_TYPE_MONOTONIC) | |
2476 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC; | |
2477 | return 0; | |
2478 | } | |
1da177e4 | 2479 | |
0df63e44 TI |
2480 | static int snd_pcm_common_ioctl1(struct file *file, |
2481 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2482 | unsigned int cmd, void __user *arg) |
2483 | { | |
1da177e4 LT |
2484 | switch (cmd) { |
2485 | case SNDRV_PCM_IOCTL_PVERSION: | |
2486 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; | |
2487 | case SNDRV_PCM_IOCTL_INFO: | |
2488 | return snd_pcm_info_user(substream, arg); | |
28e9e473 JK |
2489 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
2490 | return 0; | |
b751eef1 JK |
2491 | case SNDRV_PCM_IOCTL_TTSTAMP: |
2492 | return snd_pcm_tstamp(substream, arg); | |
1da177e4 LT |
2493 | case SNDRV_PCM_IOCTL_HW_REFINE: |
2494 | return snd_pcm_hw_refine_user(substream, arg); | |
2495 | case SNDRV_PCM_IOCTL_HW_PARAMS: | |
2496 | return snd_pcm_hw_params_user(substream, arg); | |
2497 | case SNDRV_PCM_IOCTL_HW_FREE: | |
2498 | return snd_pcm_hw_free(substream); | |
2499 | case SNDRV_PCM_IOCTL_SW_PARAMS: | |
2500 | return snd_pcm_sw_params_user(substream, arg); | |
2501 | case SNDRV_PCM_IOCTL_STATUS: | |
2502 | return snd_pcm_status_user(substream, arg); | |
2503 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: | |
2504 | return snd_pcm_channel_info_user(substream, arg); | |
2505 | case SNDRV_PCM_IOCTL_PREPARE: | |
0df63e44 | 2506 | return snd_pcm_prepare(substream, file); |
1da177e4 LT |
2507 | case SNDRV_PCM_IOCTL_RESET: |
2508 | return snd_pcm_reset(substream); | |
2509 | case SNDRV_PCM_IOCTL_START: | |
2510 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); | |
2511 | case SNDRV_PCM_IOCTL_LINK: | |
2512 | return snd_pcm_link(substream, (int)(unsigned long) arg); | |
2513 | case SNDRV_PCM_IOCTL_UNLINK: | |
2514 | return snd_pcm_unlink(substream); | |
2515 | case SNDRV_PCM_IOCTL_RESUME: | |
2516 | return snd_pcm_resume(substream); | |
2517 | case SNDRV_PCM_IOCTL_XRUN: | |
2518 | return snd_pcm_xrun(substream); | |
2519 | case SNDRV_PCM_IOCTL_HWSYNC: | |
2520 | return snd_pcm_hwsync(substream); | |
2521 | case SNDRV_PCM_IOCTL_DELAY: | |
2522 | return snd_pcm_delay(substream, arg); | |
2523 | case SNDRV_PCM_IOCTL_SYNC_PTR: | |
2524 | return snd_pcm_sync_ptr(substream, arg); | |
59d48582 | 2525 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
2526 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
2527 | return snd_pcm_hw_refine_old_user(substream, arg); | |
2528 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: | |
2529 | return snd_pcm_hw_params_old_user(substream, arg); | |
59d48582 | 2530 | #endif |
1da177e4 | 2531 | case SNDRV_PCM_IOCTL_DRAIN: |
4cdc115f | 2532 | return snd_pcm_drain(substream, file); |
1da177e4 LT |
2533 | case SNDRV_PCM_IOCTL_DROP: |
2534 | return snd_pcm_drop(substream); | |
e661d0dd TI |
2535 | case SNDRV_PCM_IOCTL_PAUSE: |
2536 | { | |
2537 | int res; | |
2538 | snd_pcm_stream_lock_irq(substream); | |
2539 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); | |
2540 | snd_pcm_stream_unlock_irq(substream); | |
2541 | return res; | |
2542 | } | |
1da177e4 LT |
2543 | } |
2544 | snd_printd("unknown ioctl = 0x%x\n", cmd); | |
2545 | return -ENOTTY; | |
2546 | } | |
2547 | ||
0df63e44 TI |
2548 | static int snd_pcm_playback_ioctl1(struct file *file, |
2549 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2550 | unsigned int cmd, void __user *arg) |
2551 | { | |
7eaa943c TI |
2552 | if (snd_BUG_ON(!substream)) |
2553 | return -ENXIO; | |
2554 | if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
2555 | return -EINVAL; | |
1da177e4 LT |
2556 | switch (cmd) { |
2557 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: | |
2558 | { | |
877211f5 TI |
2559 | struct snd_xferi xferi; |
2560 | struct snd_xferi __user *_xferi = arg; | |
2561 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2562 | snd_pcm_sframes_t result; |
2563 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2564 | return -EBADFD; | |
2565 | if (put_user(0, &_xferi->result)) | |
2566 | return -EFAULT; | |
2567 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2568 | return -EFAULT; | |
2569 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); | |
2570 | __put_user(result, &_xferi->result); | |
2571 | return result < 0 ? result : 0; | |
2572 | } | |
2573 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: | |
2574 | { | |
877211f5 TI |
2575 | struct snd_xfern xfern; |
2576 | struct snd_xfern __user *_xfern = arg; | |
2577 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2578 | void __user **bufs; |
2579 | snd_pcm_sframes_t result; | |
2580 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2581 | return -EBADFD; | |
2582 | if (runtime->channels > 128) | |
2583 | return -EINVAL; | |
2584 | if (put_user(0, &_xfern->result)) | |
2585 | return -EFAULT; | |
2586 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2587 | return -EFAULT; | |
ef44a1ec LZ |
2588 | |
2589 | bufs = memdup_user(xfern.bufs, | |
2590 | sizeof(void *) * runtime->channels); | |
2591 | if (IS_ERR(bufs)) | |
2592 | return PTR_ERR(bufs); | |
1da177e4 LT |
2593 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); |
2594 | kfree(bufs); | |
2595 | __put_user(result, &_xfern->result); | |
2596 | return result < 0 ? result : 0; | |
2597 | } | |
2598 | case SNDRV_PCM_IOCTL_REWIND: | |
2599 | { | |
2600 | snd_pcm_uframes_t frames; | |
2601 | snd_pcm_uframes_t __user *_frames = arg; | |
2602 | snd_pcm_sframes_t result; | |
2603 | if (get_user(frames, _frames)) | |
2604 | return -EFAULT; | |
2605 | if (put_user(0, _frames)) | |
2606 | return -EFAULT; | |
2607 | result = snd_pcm_playback_rewind(substream, frames); | |
2608 | __put_user(result, _frames); | |
2609 | return result < 0 ? result : 0; | |
2610 | } | |
2611 | case SNDRV_PCM_IOCTL_FORWARD: | |
2612 | { | |
2613 | snd_pcm_uframes_t frames; | |
2614 | snd_pcm_uframes_t __user *_frames = arg; | |
2615 | snd_pcm_sframes_t result; | |
2616 | if (get_user(frames, _frames)) | |
2617 | return -EFAULT; | |
2618 | if (put_user(0, _frames)) | |
2619 | return -EFAULT; | |
2620 | result = snd_pcm_playback_forward(substream, frames); | |
2621 | __put_user(result, _frames); | |
2622 | return result < 0 ? result : 0; | |
2623 | } | |
1da177e4 | 2624 | } |
0df63e44 | 2625 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2626 | } |
2627 | ||
0df63e44 TI |
2628 | static int snd_pcm_capture_ioctl1(struct file *file, |
2629 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2630 | unsigned int cmd, void __user *arg) |
2631 | { | |
7eaa943c TI |
2632 | if (snd_BUG_ON(!substream)) |
2633 | return -ENXIO; | |
2634 | if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_CAPTURE)) | |
2635 | return -EINVAL; | |
1da177e4 LT |
2636 | switch (cmd) { |
2637 | case SNDRV_PCM_IOCTL_READI_FRAMES: | |
2638 | { | |
877211f5 TI |
2639 | struct snd_xferi xferi; |
2640 | struct snd_xferi __user *_xferi = arg; | |
2641 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2642 | snd_pcm_sframes_t result; |
2643 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2644 | return -EBADFD; | |
2645 | if (put_user(0, &_xferi->result)) | |
2646 | return -EFAULT; | |
2647 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2648 | return -EFAULT; | |
2649 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); | |
2650 | __put_user(result, &_xferi->result); | |
2651 | return result < 0 ? result : 0; | |
2652 | } | |
2653 | case SNDRV_PCM_IOCTL_READN_FRAMES: | |
2654 | { | |
877211f5 TI |
2655 | struct snd_xfern xfern; |
2656 | struct snd_xfern __user *_xfern = arg; | |
2657 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2658 | void *bufs; |
2659 | snd_pcm_sframes_t result; | |
2660 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2661 | return -EBADFD; | |
2662 | if (runtime->channels > 128) | |
2663 | return -EINVAL; | |
2664 | if (put_user(0, &_xfern->result)) | |
2665 | return -EFAULT; | |
2666 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2667 | return -EFAULT; | |
ef44a1ec LZ |
2668 | |
2669 | bufs = memdup_user(xfern.bufs, | |
2670 | sizeof(void *) * runtime->channels); | |
2671 | if (IS_ERR(bufs)) | |
2672 | return PTR_ERR(bufs); | |
1da177e4 LT |
2673 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); |
2674 | kfree(bufs); | |
2675 | __put_user(result, &_xfern->result); | |
2676 | return result < 0 ? result : 0; | |
2677 | } | |
2678 | case SNDRV_PCM_IOCTL_REWIND: | |
2679 | { | |
2680 | snd_pcm_uframes_t frames; | |
2681 | snd_pcm_uframes_t __user *_frames = arg; | |
2682 | snd_pcm_sframes_t result; | |
2683 | if (get_user(frames, _frames)) | |
2684 | return -EFAULT; | |
2685 | if (put_user(0, _frames)) | |
2686 | return -EFAULT; | |
2687 | result = snd_pcm_capture_rewind(substream, frames); | |
2688 | __put_user(result, _frames); | |
2689 | return result < 0 ? result : 0; | |
2690 | } | |
2691 | case SNDRV_PCM_IOCTL_FORWARD: | |
2692 | { | |
2693 | snd_pcm_uframes_t frames; | |
2694 | snd_pcm_uframes_t __user *_frames = arg; | |
2695 | snd_pcm_sframes_t result; | |
2696 | if (get_user(frames, _frames)) | |
2697 | return -EFAULT; | |
2698 | if (put_user(0, _frames)) | |
2699 | return -EFAULT; | |
2700 | result = snd_pcm_capture_forward(substream, frames); | |
2701 | __put_user(result, _frames); | |
2702 | return result < 0 ? result : 0; | |
2703 | } | |
2704 | } | |
0df63e44 | 2705 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2706 | } |
2707 | ||
877211f5 TI |
2708 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
2709 | unsigned long arg) | |
1da177e4 | 2710 | { |
877211f5 | 2711 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2712 | |
2713 | pcm_file = file->private_data; | |
2714 | ||
2715 | if (((cmd >> 8) & 0xff) != 'A') | |
2716 | return -ENOTTY; | |
2717 | ||
0df63e44 TI |
2718 | return snd_pcm_playback_ioctl1(file, pcm_file->substream, cmd, |
2719 | (void __user *)arg); | |
1da177e4 LT |
2720 | } |
2721 | ||
877211f5 TI |
2722 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
2723 | unsigned long arg) | |
1da177e4 | 2724 | { |
877211f5 | 2725 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2726 | |
2727 | pcm_file = file->private_data; | |
2728 | ||
2729 | if (((cmd >> 8) & 0xff) != 'A') | |
2730 | return -ENOTTY; | |
2731 | ||
0df63e44 TI |
2732 | return snd_pcm_capture_ioctl1(file, pcm_file->substream, cmd, |
2733 | (void __user *)arg); | |
1da177e4 LT |
2734 | } |
2735 | ||
bf1bbb5a TI |
2736 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
2737 | unsigned int cmd, void *arg) | |
1da177e4 LT |
2738 | { |
2739 | mm_segment_t fs; | |
2740 | int result; | |
2741 | ||
2742 | fs = snd_enter_user(); | |
1da177e4 LT |
2743 | switch (substream->stream) { |
2744 | case SNDRV_PCM_STREAM_PLAYBACK: | |
0df63e44 TI |
2745 | result = snd_pcm_playback_ioctl1(NULL, substream, cmd, |
2746 | (void __user *)arg); | |
bf1bbb5a | 2747 | break; |
1da177e4 | 2748 | case SNDRV_PCM_STREAM_CAPTURE: |
0df63e44 TI |
2749 | result = snd_pcm_capture_ioctl1(NULL, substream, cmd, |
2750 | (void __user *)arg); | |
bf1bbb5a | 2751 | break; |
1da177e4 | 2752 | default: |
bf1bbb5a TI |
2753 | result = -EINVAL; |
2754 | break; | |
1da177e4 | 2755 | } |
bf1bbb5a TI |
2756 | snd_leave_user(fs); |
2757 | return result; | |
1da177e4 LT |
2758 | } |
2759 | ||
e88e8ae6 TI |
2760 | EXPORT_SYMBOL(snd_pcm_kernel_ioctl); |
2761 | ||
877211f5 TI |
2762 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
2763 | loff_t * offset) | |
1da177e4 | 2764 | { |
877211f5 TI |
2765 | struct snd_pcm_file *pcm_file; |
2766 | struct snd_pcm_substream *substream; | |
2767 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2768 | snd_pcm_sframes_t result; |
2769 | ||
2770 | pcm_file = file->private_data; | |
2771 | substream = pcm_file->substream; | |
7eaa943c TI |
2772 | if (PCM_RUNTIME_CHECK(substream)) |
2773 | return -ENXIO; | |
1da177e4 LT |
2774 | runtime = substream->runtime; |
2775 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2776 | return -EBADFD; | |
2777 | if (!frame_aligned(runtime, count)) | |
2778 | return -EINVAL; | |
2779 | count = bytes_to_frames(runtime, count); | |
2780 | result = snd_pcm_lib_read(substream, buf, count); | |
2781 | if (result > 0) | |
2782 | result = frames_to_bytes(runtime, result); | |
2783 | return result; | |
2784 | } | |
2785 | ||
877211f5 TI |
2786 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
2787 | size_t count, loff_t * offset) | |
1da177e4 | 2788 | { |
877211f5 TI |
2789 | struct snd_pcm_file *pcm_file; |
2790 | struct snd_pcm_substream *substream; | |
2791 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2792 | snd_pcm_sframes_t result; |
2793 | ||
2794 | pcm_file = file->private_data; | |
2795 | substream = pcm_file->substream; | |
7eaa943c TI |
2796 | if (PCM_RUNTIME_CHECK(substream)) |
2797 | return -ENXIO; | |
1da177e4 | 2798 | runtime = substream->runtime; |
7eaa943c TI |
2799 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
2800 | return -EBADFD; | |
2801 | if (!frame_aligned(runtime, count)) | |
2802 | return -EINVAL; | |
1da177e4 LT |
2803 | count = bytes_to_frames(runtime, count); |
2804 | result = snd_pcm_lib_write(substream, buf, count); | |
2805 | if (result > 0) | |
2806 | result = frames_to_bytes(runtime, result); | |
1da177e4 LT |
2807 | return result; |
2808 | } | |
2809 | ||
ee0b3e67 BP |
2810 | static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov, |
2811 | unsigned long nr_segs, loff_t pos) | |
1da177e4 LT |
2812 | |
2813 | { | |
877211f5 TI |
2814 | struct snd_pcm_file *pcm_file; |
2815 | struct snd_pcm_substream *substream; | |
2816 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2817 | snd_pcm_sframes_t result; |
2818 | unsigned long i; | |
2819 | void __user **bufs; | |
2820 | snd_pcm_uframes_t frames; | |
2821 | ||
ee0b3e67 | 2822 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 | 2823 | substream = pcm_file->substream; |
7eaa943c TI |
2824 | if (PCM_RUNTIME_CHECK(substream)) |
2825 | return -ENXIO; | |
1da177e4 LT |
2826 | runtime = substream->runtime; |
2827 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2828 | return -EBADFD; | |
ee0b3e67 | 2829 | if (nr_segs > 1024 || nr_segs != runtime->channels) |
1da177e4 | 2830 | return -EINVAL; |
ee0b3e67 | 2831 | if (!frame_aligned(runtime, iov->iov_len)) |
1da177e4 | 2832 | return -EINVAL; |
ee0b3e67 BP |
2833 | frames = bytes_to_samples(runtime, iov->iov_len); |
2834 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2835 | if (bufs == NULL) |
2836 | return -ENOMEM; | |
ee0b3e67 BP |
2837 | for (i = 0; i < nr_segs; ++i) |
2838 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2839 | result = snd_pcm_lib_readv(substream, bufs, frames); |
2840 | if (result > 0) | |
2841 | result = frames_to_bytes(runtime, result); | |
2842 | kfree(bufs); | |
2843 | return result; | |
2844 | } | |
2845 | ||
ee0b3e67 BP |
2846 | static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov, |
2847 | unsigned long nr_segs, loff_t pos) | |
1da177e4 | 2848 | { |
877211f5 TI |
2849 | struct snd_pcm_file *pcm_file; |
2850 | struct snd_pcm_substream *substream; | |
2851 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2852 | snd_pcm_sframes_t result; |
2853 | unsigned long i; | |
2854 | void __user **bufs; | |
2855 | snd_pcm_uframes_t frames; | |
2856 | ||
ee0b3e67 | 2857 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 | 2858 | substream = pcm_file->substream; |
7eaa943c TI |
2859 | if (PCM_RUNTIME_CHECK(substream)) |
2860 | return -ENXIO; | |
1da177e4 | 2861 | runtime = substream->runtime; |
7eaa943c TI |
2862 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
2863 | return -EBADFD; | |
ee0b3e67 | 2864 | if (nr_segs > 128 || nr_segs != runtime->channels || |
7eaa943c TI |
2865 | !frame_aligned(runtime, iov->iov_len)) |
2866 | return -EINVAL; | |
ee0b3e67 BP |
2867 | frames = bytes_to_samples(runtime, iov->iov_len); |
2868 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2869 | if (bufs == NULL) |
2870 | return -ENOMEM; | |
ee0b3e67 BP |
2871 | for (i = 0; i < nr_segs; ++i) |
2872 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2873 | result = snd_pcm_lib_writev(substream, bufs, frames); |
2874 | if (result > 0) | |
2875 | result = frames_to_bytes(runtime, result); | |
2876 | kfree(bufs); | |
1da177e4 LT |
2877 | return result; |
2878 | } | |
2879 | ||
2880 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) | |
2881 | { | |
877211f5 TI |
2882 | struct snd_pcm_file *pcm_file; |
2883 | struct snd_pcm_substream *substream; | |
2884 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2885 | unsigned int mask; |
2886 | snd_pcm_uframes_t avail; | |
2887 | ||
2888 | pcm_file = file->private_data; | |
2889 | ||
2890 | substream = pcm_file->substream; | |
7eaa943c TI |
2891 | if (PCM_RUNTIME_CHECK(substream)) |
2892 | return -ENXIO; | |
1da177e4 LT |
2893 | runtime = substream->runtime; |
2894 | ||
2895 | poll_wait(file, &runtime->sleep, wait); | |
2896 | ||
2897 | snd_pcm_stream_lock_irq(substream); | |
2898 | avail = snd_pcm_playback_avail(runtime); | |
2899 | switch (runtime->status->state) { | |
2900 | case SNDRV_PCM_STATE_RUNNING: | |
2901 | case SNDRV_PCM_STATE_PREPARED: | |
2902 | case SNDRV_PCM_STATE_PAUSED: | |
2903 | if (avail >= runtime->control->avail_min) { | |
2904 | mask = POLLOUT | POLLWRNORM; | |
2905 | break; | |
2906 | } | |
2907 | /* Fall through */ | |
2908 | case SNDRV_PCM_STATE_DRAINING: | |
2909 | mask = 0; | |
2910 | break; | |
2911 | default: | |
2912 | mask = POLLOUT | POLLWRNORM | POLLERR; | |
2913 | break; | |
2914 | } | |
2915 | snd_pcm_stream_unlock_irq(substream); | |
2916 | return mask; | |
2917 | } | |
2918 | ||
2919 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) | |
2920 | { | |
877211f5 TI |
2921 | struct snd_pcm_file *pcm_file; |
2922 | struct snd_pcm_substream *substream; | |
2923 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2924 | unsigned int mask; |
2925 | snd_pcm_uframes_t avail; | |
2926 | ||
2927 | pcm_file = file->private_data; | |
2928 | ||
2929 | substream = pcm_file->substream; | |
7eaa943c TI |
2930 | if (PCM_RUNTIME_CHECK(substream)) |
2931 | return -ENXIO; | |
1da177e4 LT |
2932 | runtime = substream->runtime; |
2933 | ||
2934 | poll_wait(file, &runtime->sleep, wait); | |
2935 | ||
2936 | snd_pcm_stream_lock_irq(substream); | |
2937 | avail = snd_pcm_capture_avail(runtime); | |
2938 | switch (runtime->status->state) { | |
2939 | case SNDRV_PCM_STATE_RUNNING: | |
2940 | case SNDRV_PCM_STATE_PREPARED: | |
2941 | case SNDRV_PCM_STATE_PAUSED: | |
2942 | if (avail >= runtime->control->avail_min) { | |
2943 | mask = POLLIN | POLLRDNORM; | |
2944 | break; | |
2945 | } | |
2946 | mask = 0; | |
2947 | break; | |
2948 | case SNDRV_PCM_STATE_DRAINING: | |
2949 | if (avail > 0) { | |
2950 | mask = POLLIN | POLLRDNORM; | |
2951 | break; | |
2952 | } | |
2953 | /* Fall through */ | |
2954 | default: | |
2955 | mask = POLLIN | POLLRDNORM | POLLERR; | |
2956 | break; | |
2957 | } | |
2958 | snd_pcm_stream_unlock_irq(substream); | |
2959 | return mask; | |
2960 | } | |
2961 | ||
2962 | /* | |
2963 | * mmap support | |
2964 | */ | |
2965 | ||
2966 | /* | |
2967 | * Only on coherent architectures, we can mmap the status and the control records | |
2968 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... | |
2969 | */ | |
2970 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
2971 | /* | |
2972 | * mmap status record | |
2973 | */ | |
3ad5afcd NP |
2974 | static int snd_pcm_mmap_status_fault(struct vm_area_struct *area, |
2975 | struct vm_fault *vmf) | |
1da177e4 | 2976 | { |
877211f5 TI |
2977 | struct snd_pcm_substream *substream = area->vm_private_data; |
2978 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2979 | |
2980 | if (substream == NULL) | |
3ad5afcd | 2981 | return VM_FAULT_SIGBUS; |
1da177e4 | 2982 | runtime = substream->runtime; |
3ad5afcd NP |
2983 | vmf->page = virt_to_page(runtime->status); |
2984 | get_page(vmf->page); | |
2985 | return 0; | |
1da177e4 LT |
2986 | } |
2987 | ||
f0f37e2f | 2988 | static const struct vm_operations_struct snd_pcm_vm_ops_status = |
1da177e4 | 2989 | { |
3ad5afcd | 2990 | .fault = snd_pcm_mmap_status_fault, |
1da177e4 LT |
2991 | }; |
2992 | ||
877211f5 | 2993 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
2994 | struct vm_area_struct *area) |
2995 | { | |
877211f5 | 2996 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
2997 | long size; |
2998 | if (!(area->vm_flags & VM_READ)) | |
2999 | return -EINVAL; | |
3000 | runtime = substream->runtime; | |
1da177e4 | 3001 | size = area->vm_end - area->vm_start; |
877211f5 | 3002 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
1da177e4 LT |
3003 | return -EINVAL; |
3004 | area->vm_ops = &snd_pcm_vm_ops_status; | |
3005 | area->vm_private_data = substream; | |
3006 | area->vm_flags |= VM_RESERVED; | |
3007 | return 0; | |
3008 | } | |
3009 | ||
3010 | /* | |
3011 | * mmap control record | |
3012 | */ | |
3ad5afcd NP |
3013 | static int snd_pcm_mmap_control_fault(struct vm_area_struct *area, |
3014 | struct vm_fault *vmf) | |
1da177e4 | 3015 | { |
877211f5 TI |
3016 | struct snd_pcm_substream *substream = area->vm_private_data; |
3017 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3018 | |
3019 | if (substream == NULL) | |
3ad5afcd | 3020 | return VM_FAULT_SIGBUS; |
1da177e4 | 3021 | runtime = substream->runtime; |
3ad5afcd NP |
3022 | vmf->page = virt_to_page(runtime->control); |
3023 | get_page(vmf->page); | |
3024 | return 0; | |
1da177e4 LT |
3025 | } |
3026 | ||
f0f37e2f | 3027 | static const struct vm_operations_struct snd_pcm_vm_ops_control = |
1da177e4 | 3028 | { |
3ad5afcd | 3029 | .fault = snd_pcm_mmap_control_fault, |
1da177e4 LT |
3030 | }; |
3031 | ||
877211f5 | 3032 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3033 | struct vm_area_struct *area) |
3034 | { | |
877211f5 | 3035 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3036 | long size; |
3037 | if (!(area->vm_flags & VM_READ)) | |
3038 | return -EINVAL; | |
3039 | runtime = substream->runtime; | |
1da177e4 | 3040 | size = area->vm_end - area->vm_start; |
877211f5 | 3041 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
3042 | return -EINVAL; |
3043 | area->vm_ops = &snd_pcm_vm_ops_control; | |
3044 | area->vm_private_data = substream; | |
3045 | area->vm_flags |= VM_RESERVED; | |
3046 | return 0; | |
3047 | } | |
3048 | #else /* ! coherent mmap */ | |
3049 | /* | |
3050 | * don't support mmap for status and control records. | |
3051 | */ | |
877211f5 | 3052 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3053 | struct vm_area_struct *area) |
3054 | { | |
3055 | return -ENXIO; | |
3056 | } | |
877211f5 | 3057 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3058 | struct vm_area_struct *area) |
3059 | { | |
3060 | return -ENXIO; | |
3061 | } | |
3062 | #endif /* coherent mmap */ | |
3063 | ||
3064 | /* | |
3ad5afcd | 3065 | * fault callback for mmapping a RAM page |
1da177e4 | 3066 | */ |
3ad5afcd NP |
3067 | static int snd_pcm_mmap_data_fault(struct vm_area_struct *area, |
3068 | struct vm_fault *vmf) | |
1da177e4 | 3069 | { |
877211f5 TI |
3070 | struct snd_pcm_substream *substream = area->vm_private_data; |
3071 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3072 | unsigned long offset; |
3073 | struct page * page; | |
3074 | void *vaddr; | |
3075 | size_t dma_bytes; | |
3076 | ||
3077 | if (substream == NULL) | |
3ad5afcd | 3078 | return VM_FAULT_SIGBUS; |
1da177e4 | 3079 | runtime = substream->runtime; |
3ad5afcd | 3080 | offset = vmf->pgoff << PAGE_SHIFT; |
1da177e4 LT |
3081 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
3082 | if (offset > dma_bytes - PAGE_SIZE) | |
3ad5afcd | 3083 | return VM_FAULT_SIGBUS; |
1da177e4 LT |
3084 | if (substream->ops->page) { |
3085 | page = substream->ops->page(substream, offset); | |
3ad5afcd NP |
3086 | if (!page) |
3087 | return VM_FAULT_SIGBUS; | |
1da177e4 LT |
3088 | } else { |
3089 | vaddr = runtime->dma_area + offset; | |
3090 | page = virt_to_page(vaddr); | |
3091 | } | |
b5810039 | 3092 | get_page(page); |
3ad5afcd NP |
3093 | vmf->page = page; |
3094 | return 0; | |
1da177e4 LT |
3095 | } |
3096 | ||
f0f37e2f | 3097 | static const struct vm_operations_struct snd_pcm_vm_ops_data = |
1da177e4 LT |
3098 | { |
3099 | .open = snd_pcm_mmap_data_open, | |
3100 | .close = snd_pcm_mmap_data_close, | |
3ad5afcd | 3101 | .fault = snd_pcm_mmap_data_fault, |
1da177e4 LT |
3102 | }; |
3103 | ||
3104 | /* | |
3105 | * mmap the DMA buffer on RAM | |
3106 | */ | |
877211f5 TI |
3107 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
3108 | struct vm_area_struct *area) | |
1da177e4 LT |
3109 | { |
3110 | area->vm_ops = &snd_pcm_vm_ops_data; | |
3111 | area->vm_private_data = substream; | |
3112 | area->vm_flags |= VM_RESERVED; | |
9c323fcb | 3113 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3114 | return 0; |
3115 | } | |
3116 | ||
3117 | /* | |
3118 | * mmap the DMA buffer on I/O memory area | |
3119 | */ | |
3120 | #if SNDRV_PCM_INFO_MMAP_IOMEM | |
f0f37e2f | 3121 | static const struct vm_operations_struct snd_pcm_vm_ops_data_mmio = |
1da177e4 LT |
3122 | { |
3123 | .open = snd_pcm_mmap_data_open, | |
3124 | .close = snd_pcm_mmap_data_close, | |
3125 | }; | |
3126 | ||
877211f5 TI |
3127 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
3128 | struct vm_area_struct *area) | |
1da177e4 LT |
3129 | { |
3130 | long size; | |
3131 | unsigned long offset; | |
3132 | ||
3133 | #ifdef pgprot_noncached | |
3134 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
3135 | #endif | |
3136 | area->vm_ops = &snd_pcm_vm_ops_data_mmio; | |
3137 | area->vm_private_data = substream; | |
3138 | area->vm_flags |= VM_IO; | |
3139 | size = area->vm_end - area->vm_start; | |
3140 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3141 | if (io_remap_pfn_range(area, area->vm_start, | |
3142 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, | |
3143 | size, area->vm_page_prot)) | |
3144 | return -EAGAIN; | |
9c323fcb | 3145 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3146 | return 0; |
3147 | } | |
e88e8ae6 TI |
3148 | |
3149 | EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); | |
1da177e4 LT |
3150 | #endif /* SNDRV_PCM_INFO_MMAP */ |
3151 | ||
3152 | /* | |
3153 | * mmap DMA buffer | |
3154 | */ | |
877211f5 | 3155 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3156 | struct vm_area_struct *area) |
3157 | { | |
877211f5 | 3158 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3159 | long size; |
3160 | unsigned long offset; | |
3161 | size_t dma_bytes; | |
3162 | ||
3163 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
3164 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) | |
3165 | return -EINVAL; | |
3166 | } else { | |
3167 | if (!(area->vm_flags & VM_READ)) | |
3168 | return -EINVAL; | |
3169 | } | |
3170 | runtime = substream->runtime; | |
1da177e4 LT |
3171 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
3172 | return -EBADFD; | |
3173 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) | |
3174 | return -ENXIO; | |
3175 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || | |
3176 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) | |
3177 | return -EINVAL; | |
3178 | size = area->vm_end - area->vm_start; | |
3179 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3180 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3181 | if ((size_t)size > dma_bytes) | |
3182 | return -EINVAL; | |
3183 | if (offset > dma_bytes - size) | |
3184 | return -EINVAL; | |
3185 | ||
3186 | if (substream->ops->mmap) | |
3187 | return substream->ops->mmap(substream, area); | |
3188 | else | |
3189 | return snd_pcm_default_mmap(substream, area); | |
3190 | } | |
3191 | ||
e88e8ae6 TI |
3192 | EXPORT_SYMBOL(snd_pcm_mmap_data); |
3193 | ||
1da177e4 LT |
3194 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
3195 | { | |
877211f5 TI |
3196 | struct snd_pcm_file * pcm_file; |
3197 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
3198 | unsigned long offset; |
3199 | ||
3200 | pcm_file = file->private_data; | |
3201 | substream = pcm_file->substream; | |
7eaa943c TI |
3202 | if (PCM_RUNTIME_CHECK(substream)) |
3203 | return -ENXIO; | |
1da177e4 LT |
3204 | |
3205 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3206 | switch (offset) { | |
3207 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
548a648b | 3208 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3209 | return -ENXIO; |
3210 | return snd_pcm_mmap_status(substream, file, area); | |
3211 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
548a648b | 3212 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3213 | return -ENXIO; |
3214 | return snd_pcm_mmap_control(substream, file, area); | |
3215 | default: | |
3216 | return snd_pcm_mmap_data(substream, file, area); | |
3217 | } | |
3218 | return 0; | |
3219 | } | |
3220 | ||
3221 | static int snd_pcm_fasync(int fd, struct file * file, int on) | |
3222 | { | |
877211f5 TI |
3223 | struct snd_pcm_file * pcm_file; |
3224 | struct snd_pcm_substream *substream; | |
3225 | struct snd_pcm_runtime *runtime; | |
2db9f0a3 | 3226 | int err = -ENXIO; |
1da177e4 | 3227 | |
2db9f0a3 | 3228 | lock_kernel(); |
1da177e4 LT |
3229 | pcm_file = file->private_data; |
3230 | substream = pcm_file->substream; | |
7eaa943c TI |
3231 | if (PCM_RUNTIME_CHECK(substream)) |
3232 | goto out; | |
1da177e4 | 3233 | runtime = substream->runtime; |
1da177e4 | 3234 | err = fasync_helper(fd, file, on, &runtime->fasync); |
685d87f7 | 3235 | out: |
2db9f0a3 | 3236 | unlock_kernel(); |
60aa4924 | 3237 | return err; |
1da177e4 LT |
3238 | } |
3239 | ||
3240 | /* | |
3241 | * ioctl32 compat | |
3242 | */ | |
3243 | #ifdef CONFIG_COMPAT | |
3244 | #include "pcm_compat.c" | |
3245 | #else | |
3246 | #define snd_pcm_ioctl_compat NULL | |
3247 | #endif | |
3248 | ||
3249 | /* | |
3250 | * To be removed helpers to keep binary compatibility | |
3251 | */ | |
3252 | ||
59d48582 | 3253 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
3254 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
3255 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) | |
3256 | ||
877211f5 TI |
3257 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
3258 | struct snd_pcm_hw_params_old *oparams) | |
1da177e4 LT |
3259 | { |
3260 | unsigned int i; | |
3261 | ||
3262 | memset(params, 0, sizeof(*params)); | |
3263 | params->flags = oparams->flags; | |
3264 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3265 | params->masks[i].bits[0] = oparams->masks[i]; | |
3266 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); | |
3267 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); | |
3268 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); | |
3269 | params->info = oparams->info; | |
3270 | params->msbits = oparams->msbits; | |
3271 | params->rate_num = oparams->rate_num; | |
3272 | params->rate_den = oparams->rate_den; | |
3273 | params->fifo_size = oparams->fifo_size; | |
3274 | } | |
3275 | ||
877211f5 TI |
3276 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
3277 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
3278 | { |
3279 | unsigned int i; | |
3280 | ||
3281 | memset(oparams, 0, sizeof(*oparams)); | |
3282 | oparams->flags = params->flags; | |
3283 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3284 | oparams->masks[i] = params->masks[i].bits[0]; | |
3285 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); | |
3286 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); | |
3287 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); | |
3288 | oparams->info = params->info; | |
3289 | oparams->msbits = params->msbits; | |
3290 | oparams->rate_num = params->rate_num; | |
3291 | oparams->rate_den = params->rate_den; | |
3292 | oparams->fifo_size = params->fifo_size; | |
3293 | } | |
3294 | ||
877211f5 TI |
3295 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
3296 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3297 | { |
877211f5 TI |
3298 | struct snd_pcm_hw_params *params; |
3299 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3300 | int err; |
3301 | ||
3302 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
ef44a1ec LZ |
3303 | if (!params) |
3304 | return -ENOMEM; | |
1da177e4 | 3305 | |
ef44a1ec LZ |
3306 | oparams = memdup_user(_oparams, sizeof(*oparams)); |
3307 | if (IS_ERR(oparams)) { | |
3308 | err = PTR_ERR(oparams); | |
1da177e4 LT |
3309 | goto out; |
3310 | } | |
3311 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3312 | err = snd_pcm_hw_refine(substream, params); | |
3313 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3314 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3315 | if (!err) | |
3316 | err = -EFAULT; | |
3317 | } | |
ef44a1ec LZ |
3318 | |
3319 | kfree(oparams); | |
1da177e4 LT |
3320 | out: |
3321 | kfree(params); | |
1da177e4 LT |
3322 | return err; |
3323 | } | |
3324 | ||
877211f5 TI |
3325 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
3326 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3327 | { |
877211f5 TI |
3328 | struct snd_pcm_hw_params *params; |
3329 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3330 | int err; |
3331 | ||
3332 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
ef44a1ec LZ |
3333 | if (!params) |
3334 | return -ENOMEM; | |
3335 | ||
3336 | oparams = memdup_user(_oparams, sizeof(*oparams)); | |
3337 | if (IS_ERR(oparams)) { | |
3338 | err = PTR_ERR(oparams); | |
1da177e4 LT |
3339 | goto out; |
3340 | } | |
3341 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3342 | err = snd_pcm_hw_params(substream, params); | |
3343 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3344 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3345 | if (!err) | |
3346 | err = -EFAULT; | |
3347 | } | |
ef44a1ec LZ |
3348 | |
3349 | kfree(oparams); | |
1da177e4 LT |
3350 | out: |
3351 | kfree(params); | |
1da177e4 LT |
3352 | return err; |
3353 | } | |
59d48582 | 3354 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
1da177e4 | 3355 | |
7003609b CC |
3356 | #ifndef CONFIG_MMU |
3357 | unsigned long dummy_get_unmapped_area(struct file *file, unsigned long addr, | |
3358 | unsigned long len, unsigned long pgoff, | |
3359 | unsigned long flags) | |
3360 | { | |
3361 | return 0; | |
3362 | } | |
3363 | #else | |
3364 | # define dummy_get_unmapped_area NULL | |
3365 | #endif | |
3366 | ||
1da177e4 LT |
3367 | /* |
3368 | * Register section | |
3369 | */ | |
3370 | ||
9c2e08c5 | 3371 | const struct file_operations snd_pcm_f_ops[2] = { |
1da177e4 | 3372 | { |
2af677fc CL |
3373 | .owner = THIS_MODULE, |
3374 | .write = snd_pcm_write, | |
ee0b3e67 | 3375 | .aio_write = snd_pcm_aio_write, |
f87135f5 | 3376 | .open = snd_pcm_playback_open, |
2af677fc CL |
3377 | .release = snd_pcm_release, |
3378 | .poll = snd_pcm_playback_poll, | |
3379 | .unlocked_ioctl = snd_pcm_playback_ioctl, | |
3380 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3381 | .mmap = snd_pcm_mmap, | |
3382 | .fasync = snd_pcm_fasync, | |
7003609b | 3383 | .get_unmapped_area = dummy_get_unmapped_area, |
1da177e4 LT |
3384 | }, |
3385 | { | |
2af677fc CL |
3386 | .owner = THIS_MODULE, |
3387 | .read = snd_pcm_read, | |
ee0b3e67 | 3388 | .aio_read = snd_pcm_aio_read, |
f87135f5 | 3389 | .open = snd_pcm_capture_open, |
2af677fc CL |
3390 | .release = snd_pcm_release, |
3391 | .poll = snd_pcm_capture_poll, | |
3392 | .unlocked_ioctl = snd_pcm_capture_ioctl, | |
3393 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3394 | .mmap = snd_pcm_mmap, | |
3395 | .fasync = snd_pcm_fasync, | |
7003609b | 3396 | .get_unmapped_area = dummy_get_unmapped_area, |
1da177e4 LT |
3397 | } |
3398 | }; |