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 | 28 | #include <linux/uio.h> |
657b1989 | 29 | #include <linux/dma-mapping.h> |
7910b4a1 | 30 | #include <linux/math64.h> |
1da177e4 LT |
31 | #include <sound/core.h> |
32 | #include <sound/control.h> | |
33 | #include <sound/info.h> | |
34 | #include <sound/pcm.h> | |
35 | #include <sound/pcm_params.h> | |
36 | #include <sound/timer.h> | |
37 | #include <sound/minors.h> | |
38 | #include <asm/io.h> | |
9fe17b5d TI |
39 | #if defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT) |
40 | #include <dma-coherence.h> | |
41 | #endif | |
1da177e4 LT |
42 | |
43 | /* | |
44 | * Compatibility | |
45 | */ | |
46 | ||
877211f5 | 47 | struct snd_pcm_hw_params_old { |
1da177e4 LT |
48 | unsigned int flags; |
49 | unsigned int masks[SNDRV_PCM_HW_PARAM_SUBFORMAT - | |
50 | SNDRV_PCM_HW_PARAM_ACCESS + 1]; | |
877211f5 | 51 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_TICK_TIME - |
1da177e4 LT |
52 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS + 1]; |
53 | unsigned int rmask; | |
54 | unsigned int cmask; | |
55 | unsigned int info; | |
56 | unsigned int msbits; | |
57 | unsigned int rate_num; | |
58 | unsigned int rate_den; | |
877211f5 | 59 | snd_pcm_uframes_t fifo_size; |
1da177e4 LT |
60 | unsigned char reserved[64]; |
61 | }; | |
62 | ||
59d48582 | 63 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
877211f5 TI |
64 | #define SNDRV_PCM_IOCTL_HW_REFINE_OLD _IOWR('A', 0x10, struct snd_pcm_hw_params_old) |
65 | #define SNDRV_PCM_IOCTL_HW_PARAMS_OLD _IOWR('A', 0x11, struct snd_pcm_hw_params_old) | |
1da177e4 | 66 | |
877211f5 TI |
67 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
68 | struct snd_pcm_hw_params_old __user * _oparams); | |
69 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, | |
70 | struct snd_pcm_hw_params_old __user * _oparams); | |
59d48582 | 71 | #endif |
f87135f5 | 72 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream); |
1da177e4 LT |
73 | |
74 | /* | |
75 | * | |
76 | */ | |
77 | ||
78 | DEFINE_RWLOCK(snd_pcm_link_rwlock); | |
e88e8ae6 | 79 | EXPORT_SYMBOL(snd_pcm_link_rwlock); |
1da177e4 | 80 | |
e88e8ae6 | 81 | static DECLARE_RWSEM(snd_pcm_link_rwsem); |
1da177e4 LT |
82 | |
83 | static inline mm_segment_t snd_enter_user(void) | |
84 | { | |
85 | mm_segment_t fs = get_fs(); | |
86 | set_fs(get_ds()); | |
87 | return fs; | |
88 | } | |
89 | ||
90 | static inline void snd_leave_user(mm_segment_t fs) | |
91 | { | |
92 | set_fs(fs); | |
93 | } | |
94 | ||
95 | ||
96 | ||
877211f5 | 97 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) |
1da177e4 | 98 | { |
877211f5 TI |
99 | struct snd_pcm_runtime *runtime; |
100 | struct snd_pcm *pcm = substream->pcm; | |
101 | struct snd_pcm_str *pstr = substream->pstr; | |
1da177e4 | 102 | |
1da177e4 LT |
103 | memset(info, 0, sizeof(*info)); |
104 | info->card = pcm->card->number; | |
105 | info->device = pcm->device; | |
106 | info->stream = substream->stream; | |
107 | info->subdevice = substream->number; | |
108 | strlcpy(info->id, pcm->id, sizeof(info->id)); | |
109 | strlcpy(info->name, pcm->name, sizeof(info->name)); | |
110 | info->dev_class = pcm->dev_class; | |
111 | info->dev_subclass = pcm->dev_subclass; | |
112 | info->subdevices_count = pstr->substream_count; | |
113 | info->subdevices_avail = pstr->substream_count - pstr->substream_opened; | |
114 | strlcpy(info->subname, substream->name, sizeof(info->subname)); | |
115 | runtime = substream->runtime; | |
116 | /* AB: FIXME!!! This is definitely nonsense */ | |
117 | if (runtime) { | |
118 | info->sync = runtime->sync; | |
119 | substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info); | |
120 | } | |
121 | return 0; | |
122 | } | |
123 | ||
877211f5 TI |
124 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
125 | struct snd_pcm_info __user * _info) | |
1da177e4 | 126 | { |
877211f5 | 127 | struct snd_pcm_info *info; |
1da177e4 LT |
128 | int err; |
129 | ||
130 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
131 | if (! info) | |
132 | return -ENOMEM; | |
133 | err = snd_pcm_info(substream, info); | |
134 | if (err >= 0) { | |
135 | if (copy_to_user(_info, info, sizeof(*info))) | |
136 | err = -EFAULT; | |
137 | } | |
138 | kfree(info); | |
139 | return err; | |
140 | } | |
141 | ||
142 | #undef RULES_DEBUG | |
143 | ||
144 | #ifdef RULES_DEBUG | |
145 | #define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v | |
146 | char *snd_pcm_hw_param_names[] = { | |
147 | HW_PARAM(ACCESS), | |
148 | HW_PARAM(FORMAT), | |
149 | HW_PARAM(SUBFORMAT), | |
150 | HW_PARAM(SAMPLE_BITS), | |
151 | HW_PARAM(FRAME_BITS), | |
152 | HW_PARAM(CHANNELS), | |
153 | HW_PARAM(RATE), | |
154 | HW_PARAM(PERIOD_TIME), | |
155 | HW_PARAM(PERIOD_SIZE), | |
156 | HW_PARAM(PERIOD_BYTES), | |
157 | HW_PARAM(PERIODS), | |
158 | HW_PARAM(BUFFER_TIME), | |
159 | HW_PARAM(BUFFER_SIZE), | |
160 | HW_PARAM(BUFFER_BYTES), | |
161 | HW_PARAM(TICK_TIME), | |
162 | }; | |
163 | #endif | |
164 | ||
877211f5 TI |
165 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, |
166 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
167 | { |
168 | unsigned int k; | |
877211f5 TI |
169 | struct snd_pcm_hardware *hw; |
170 | struct snd_interval *i = NULL; | |
171 | struct snd_mask *m = NULL; | |
172 | struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; | |
1da177e4 LT |
173 | unsigned int rstamps[constrs->rules_num]; |
174 | unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; | |
175 | unsigned int stamp = 2; | |
176 | int changed, again; | |
177 | ||
178 | params->info = 0; | |
179 | params->fifo_size = 0; | |
180 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) | |
181 | params->msbits = 0; | |
182 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { | |
183 | params->rate_num = 0; | |
184 | params->rate_den = 0; | |
185 | } | |
186 | ||
187 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
188 | m = hw_param_mask(params, k); | |
189 | if (snd_mask_empty(m)) | |
190 | return -EINVAL; | |
191 | if (!(params->rmask & (1 << k))) | |
192 | continue; | |
193 | #ifdef RULES_DEBUG | |
006de267 | 194 | printk(KERN_DEBUG "%s = ", snd_pcm_hw_param_names[k]); |
1da177e4 LT |
195 | printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); |
196 | #endif | |
197 | changed = snd_mask_refine(m, constrs_mask(constrs, k)); | |
198 | #ifdef RULES_DEBUG | |
199 | printk("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
200 | #endif | |
201 | if (changed) | |
202 | params->cmask |= 1 << k; | |
203 | if (changed < 0) | |
204 | return changed; | |
205 | } | |
206 | ||
207 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
208 | i = hw_param_interval(params, k); | |
209 | if (snd_interval_empty(i)) | |
210 | return -EINVAL; | |
211 | if (!(params->rmask & (1 << k))) | |
212 | continue; | |
213 | #ifdef RULES_DEBUG | |
006de267 | 214 | printk(KERN_DEBUG "%s = ", snd_pcm_hw_param_names[k]); |
1da177e4 LT |
215 | if (i->empty) |
216 | printk("empty"); | |
217 | else | |
218 | printk("%c%u %u%c", | |
219 | i->openmin ? '(' : '[', i->min, | |
220 | i->max, i->openmax ? ')' : ']'); | |
221 | printk(" -> "); | |
222 | #endif | |
223 | changed = snd_interval_refine(i, constrs_interval(constrs, k)); | |
224 | #ifdef RULES_DEBUG | |
225 | if (i->empty) | |
226 | printk("empty\n"); | |
227 | else | |
228 | printk("%c%u %u%c\n", | |
229 | i->openmin ? '(' : '[', i->min, | |
230 | i->max, i->openmax ? ')' : ']'); | |
231 | #endif | |
232 | if (changed) | |
233 | params->cmask |= 1 << k; | |
234 | if (changed < 0) | |
235 | return changed; | |
236 | } | |
237 | ||
238 | for (k = 0; k < constrs->rules_num; k++) | |
239 | rstamps[k] = 0; | |
240 | for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) | |
241 | vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0; | |
242 | do { | |
243 | again = 0; | |
244 | for (k = 0; k < constrs->rules_num; k++) { | |
877211f5 | 245 | struct snd_pcm_hw_rule *r = &constrs->rules[k]; |
1da177e4 LT |
246 | unsigned int d; |
247 | int doit = 0; | |
248 | if (r->cond && !(r->cond & params->flags)) | |
249 | continue; | |
250 | for (d = 0; r->deps[d] >= 0; d++) { | |
251 | if (vstamps[r->deps[d]] > rstamps[k]) { | |
252 | doit = 1; | |
253 | break; | |
254 | } | |
255 | } | |
256 | if (!doit) | |
257 | continue; | |
258 | #ifdef RULES_DEBUG | |
006de267 | 259 | printk(KERN_DEBUG "Rule %d [%p]: ", k, r->func); |
1da177e4 LT |
260 | if (r->var >= 0) { |
261 | printk("%s = ", snd_pcm_hw_param_names[r->var]); | |
262 | if (hw_is_mask(r->var)) { | |
263 | m = hw_param_mask(params, r->var); | |
264 | printk("%x", *m->bits); | |
265 | } else { | |
266 | i = hw_param_interval(params, r->var); | |
267 | if (i->empty) | |
268 | printk("empty"); | |
269 | else | |
270 | printk("%c%u %u%c", | |
271 | i->openmin ? '(' : '[', i->min, | |
272 | i->max, i->openmax ? ')' : ']'); | |
273 | } | |
274 | } | |
275 | #endif | |
276 | changed = r->func(params, r); | |
277 | #ifdef RULES_DEBUG | |
278 | if (r->var >= 0) { | |
279 | printk(" -> "); | |
280 | if (hw_is_mask(r->var)) | |
281 | printk("%x", *m->bits); | |
282 | else { | |
283 | if (i->empty) | |
284 | printk("empty"); | |
285 | else | |
286 | printk("%c%u %u%c", | |
287 | i->openmin ? '(' : '[', i->min, | |
288 | i->max, i->openmax ? ')' : ']'); | |
289 | } | |
290 | } | |
291 | printk("\n"); | |
292 | #endif | |
293 | rstamps[k] = stamp; | |
294 | if (changed && r->var >= 0) { | |
295 | params->cmask |= (1 << r->var); | |
296 | vstamps[r->var] = stamp; | |
297 | again = 1; | |
298 | } | |
299 | if (changed < 0) | |
300 | return changed; | |
301 | stamp++; | |
302 | } | |
303 | } while (again); | |
304 | if (!params->msbits) { | |
305 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); | |
306 | if (snd_interval_single(i)) | |
307 | params->msbits = snd_interval_value(i); | |
308 | } | |
309 | ||
310 | if (!params->rate_den) { | |
311 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
312 | if (snd_interval_single(i)) { | |
313 | params->rate_num = snd_interval_value(i); | |
314 | params->rate_den = 1; | |
315 | } | |
316 | } | |
317 | ||
318 | hw = &substream->runtime->hw; | |
319 | if (!params->info) | |
8bea869c JK |
320 | params->info = hw->info & ~SNDRV_PCM_INFO_FIFO_IN_FRAMES; |
321 | if (!params->fifo_size) { | |
3be522a9 JK |
322 | m = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
323 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
324 | if (snd_mask_min(m) == snd_mask_max(m) && | |
325 | snd_interval_min(i) == snd_interval_max(i)) { | |
8bea869c JK |
326 | changed = substream->ops->ioctl(substream, |
327 | SNDRV_PCM_IOCTL1_FIFO_SIZE, params); | |
8bd9bca3 | 328 | if (changed < 0) |
8bea869c JK |
329 | return changed; |
330 | } | |
331 | } | |
1da177e4 LT |
332 | params->rmask = 0; |
333 | return 0; | |
334 | } | |
335 | ||
e88e8ae6 TI |
336 | EXPORT_SYMBOL(snd_pcm_hw_refine); |
337 | ||
877211f5 TI |
338 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
339 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 340 | { |
877211f5 | 341 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
342 | int err; |
343 | ||
ef44a1ec LZ |
344 | params = memdup_user(_params, sizeof(*params)); |
345 | if (IS_ERR(params)) | |
346 | return PTR_ERR(params); | |
347 | ||
1da177e4 LT |
348 | err = snd_pcm_hw_refine(substream, params); |
349 | if (copy_to_user(_params, params, sizeof(*params))) { | |
350 | if (!err) | |
351 | err = -EFAULT; | |
352 | } | |
ef44a1ec | 353 | |
1da177e4 LT |
354 | kfree(params); |
355 | return err; | |
356 | } | |
357 | ||
9442e691 TI |
358 | static int period_to_usecs(struct snd_pcm_runtime *runtime) |
359 | { | |
360 | int usecs; | |
361 | ||
362 | if (! runtime->rate) | |
363 | return -1; /* invalid */ | |
364 | ||
365 | /* take 75% of period time as the deadline */ | |
366 | usecs = (750000 / runtime->rate) * runtime->period_size; | |
367 | usecs += ((750000 % runtime->rate) * runtime->period_size) / | |
368 | runtime->rate; | |
369 | ||
370 | return usecs; | |
371 | } | |
372 | ||
7910b4a1 JK |
373 | static int calc_boundary(struct snd_pcm_runtime *runtime) |
374 | { | |
375 | u_int64_t boundary; | |
376 | ||
377 | boundary = (u_int64_t)runtime->buffer_size * | |
378 | (u_int64_t)runtime->period_size; | |
379 | #if BITS_PER_LONG < 64 | |
380 | /* try to find lowest common multiple for buffer and period */ | |
381 | if (boundary > LONG_MAX - runtime->buffer_size) { | |
382 | u_int32_t remainder = -1; | |
383 | u_int32_t divident = runtime->buffer_size; | |
384 | u_int32_t divisor = runtime->period_size; | |
385 | while (remainder) { | |
386 | remainder = divident % divisor; | |
387 | if (remainder) { | |
388 | divident = divisor; | |
389 | divisor = remainder; | |
390 | } | |
391 | } | |
392 | boundary = div_u64(boundary, divisor); | |
393 | if (boundary > LONG_MAX - runtime->buffer_size) | |
394 | return -ERANGE; | |
395 | } | |
396 | #endif | |
397 | if (boundary == 0) | |
398 | return -ERANGE; | |
399 | runtime->boundary = boundary; | |
400 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) | |
401 | runtime->boundary *= 2; | |
402 | return 0; | |
403 | } | |
404 | ||
877211f5 TI |
405 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
406 | struct snd_pcm_hw_params *params) | |
1da177e4 | 407 | { |
877211f5 | 408 | struct snd_pcm_runtime *runtime; |
9442e691 | 409 | int err, usecs; |
1da177e4 LT |
410 | unsigned int bits; |
411 | snd_pcm_uframes_t frames; | |
412 | ||
7eaa943c TI |
413 | if (PCM_RUNTIME_CHECK(substream)) |
414 | return -ENXIO; | |
1da177e4 | 415 | runtime = substream->runtime; |
1da177e4 LT |
416 | snd_pcm_stream_lock_irq(substream); |
417 | switch (runtime->status->state) { | |
418 | case SNDRV_PCM_STATE_OPEN: | |
419 | case SNDRV_PCM_STATE_SETUP: | |
420 | case SNDRV_PCM_STATE_PREPARED: | |
421 | break; | |
422 | default: | |
423 | snd_pcm_stream_unlock_irq(substream); | |
424 | return -EBADFD; | |
425 | } | |
426 | snd_pcm_stream_unlock_irq(substream); | |
427 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
428 | if (!substream->oss.oss) | |
429 | #endif | |
9c323fcb | 430 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
431 | return -EBADFD; |
432 | ||
433 | params->rmask = ~0U; | |
434 | err = snd_pcm_hw_refine(substream, params); | |
435 | if (err < 0) | |
436 | goto _error; | |
437 | ||
438 | err = snd_pcm_hw_params_choose(substream, params); | |
439 | if (err < 0) | |
440 | goto _error; | |
441 | ||
442 | if (substream->ops->hw_params != NULL) { | |
443 | err = substream->ops->hw_params(substream, params); | |
444 | if (err < 0) | |
445 | goto _error; | |
446 | } | |
447 | ||
448 | runtime->access = params_access(params); | |
449 | runtime->format = params_format(params); | |
450 | runtime->subformat = params_subformat(params); | |
451 | runtime->channels = params_channels(params); | |
452 | runtime->rate = params_rate(params); | |
453 | runtime->period_size = params_period_size(params); | |
454 | runtime->periods = params_periods(params); | |
455 | runtime->buffer_size = params_buffer_size(params); | |
1da177e4 LT |
456 | runtime->info = params->info; |
457 | runtime->rate_num = params->rate_num; | |
458 | runtime->rate_den = params->rate_den; | |
459 | ||
460 | bits = snd_pcm_format_physical_width(runtime->format); | |
461 | runtime->sample_bits = bits; | |
462 | bits *= runtime->channels; | |
463 | runtime->frame_bits = bits; | |
464 | frames = 1; | |
465 | while (bits % 8 != 0) { | |
466 | bits *= 2; | |
467 | frames *= 2; | |
468 | } | |
469 | runtime->byte_align = bits / 8; | |
470 | runtime->min_align = frames; | |
471 | ||
472 | /* Default sw params */ | |
473 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
474 | runtime->period_step = 1; | |
1da177e4 | 475 | runtime->control->avail_min = runtime->period_size; |
1da177e4 LT |
476 | runtime->start_threshold = 1; |
477 | runtime->stop_threshold = runtime->buffer_size; | |
478 | runtime->silence_threshold = 0; | |
479 | runtime->silence_size = 0; | |
7910b4a1 JK |
480 | err = calc_boundary(runtime); |
481 | if (err < 0) | |
482 | goto _error; | |
1da177e4 LT |
483 | |
484 | snd_pcm_timer_resolution_change(substream); | |
485 | runtime->status->state = SNDRV_PCM_STATE_SETUP; | |
9442e691 | 486 | |
f011e2e2 MG |
487 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, |
488 | substream->latency_id); | |
9442e691 | 489 | if ((usecs = period_to_usecs(runtime)) >= 0) |
f011e2e2 MG |
490 | pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, |
491 | substream->latency_id, usecs); | |
1da177e4 LT |
492 | return 0; |
493 | _error: | |
494 | /* hardware might be unuseable from this time, | |
495 | so we force application to retry to set | |
496 | the correct hardware parameter settings */ | |
497 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
498 | if (substream->ops->hw_free != NULL) | |
499 | substream->ops->hw_free(substream); | |
500 | return err; | |
501 | } | |
502 | ||
877211f5 TI |
503 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
504 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 505 | { |
877211f5 | 506 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
507 | int err; |
508 | ||
ef44a1ec LZ |
509 | params = memdup_user(_params, sizeof(*params)); |
510 | if (IS_ERR(params)) | |
511 | return PTR_ERR(params); | |
512 | ||
1da177e4 LT |
513 | err = snd_pcm_hw_params(substream, params); |
514 | if (copy_to_user(_params, params, sizeof(*params))) { | |
515 | if (!err) | |
516 | err = -EFAULT; | |
517 | } | |
ef44a1ec | 518 | |
1da177e4 LT |
519 | kfree(params); |
520 | return err; | |
521 | } | |
522 | ||
877211f5 | 523 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 524 | { |
877211f5 | 525 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
526 | int result = 0; |
527 | ||
7eaa943c TI |
528 | if (PCM_RUNTIME_CHECK(substream)) |
529 | return -ENXIO; | |
1da177e4 | 530 | runtime = substream->runtime; |
1da177e4 LT |
531 | snd_pcm_stream_lock_irq(substream); |
532 | switch (runtime->status->state) { | |
533 | case SNDRV_PCM_STATE_SETUP: | |
534 | case SNDRV_PCM_STATE_PREPARED: | |
535 | break; | |
536 | default: | |
537 | snd_pcm_stream_unlock_irq(substream); | |
538 | return -EBADFD; | |
539 | } | |
540 | snd_pcm_stream_unlock_irq(substream); | |
9c323fcb | 541 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
542 | return -EBADFD; |
543 | if (substream->ops->hw_free) | |
544 | result = substream->ops->hw_free(substream); | |
545 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
f011e2e2 MG |
546 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, |
547 | substream->latency_id); | |
1da177e4 LT |
548 | return result; |
549 | } | |
550 | ||
877211f5 TI |
551 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
552 | struct snd_pcm_sw_params *params) | |
1da177e4 | 553 | { |
877211f5 | 554 | struct snd_pcm_runtime *runtime; |
1250932e | 555 | int err; |
1da177e4 | 556 | |
7eaa943c TI |
557 | if (PCM_RUNTIME_CHECK(substream)) |
558 | return -ENXIO; | |
1da177e4 | 559 | runtime = substream->runtime; |
1da177e4 LT |
560 | snd_pcm_stream_lock_irq(substream); |
561 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
562 | snd_pcm_stream_unlock_irq(substream); | |
563 | return -EBADFD; | |
564 | } | |
565 | snd_pcm_stream_unlock_irq(substream); | |
566 | ||
567 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) | |
568 | return -EINVAL; | |
569 | if (params->avail_min == 0) | |
570 | return -EINVAL; | |
1da177e4 LT |
571 | if (params->silence_size >= runtime->boundary) { |
572 | if (params->silence_threshold != 0) | |
573 | return -EINVAL; | |
574 | } else { | |
575 | if (params->silence_size > params->silence_threshold) | |
576 | return -EINVAL; | |
577 | if (params->silence_threshold > runtime->buffer_size) | |
578 | return -EINVAL; | |
579 | } | |
1250932e | 580 | err = 0; |
1da177e4 LT |
581 | snd_pcm_stream_lock_irq(substream); |
582 | runtime->tstamp_mode = params->tstamp_mode; | |
1da177e4 LT |
583 | runtime->period_step = params->period_step; |
584 | runtime->control->avail_min = params->avail_min; | |
585 | runtime->start_threshold = params->start_threshold; | |
586 | runtime->stop_threshold = params->stop_threshold; | |
587 | runtime->silence_threshold = params->silence_threshold; | |
588 | runtime->silence_size = params->silence_size; | |
1da177e4 LT |
589 | params->boundary = runtime->boundary; |
590 | if (snd_pcm_running(substream)) { | |
1da177e4 LT |
591 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
592 | runtime->silence_size > 0) | |
593 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1250932e | 594 | err = snd_pcm_update_state(substream, runtime); |
1da177e4 LT |
595 | } |
596 | snd_pcm_stream_unlock_irq(substream); | |
1250932e | 597 | return err; |
1da177e4 LT |
598 | } |
599 | ||
877211f5 TI |
600 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
601 | struct snd_pcm_sw_params __user * _params) | |
1da177e4 | 602 | { |
877211f5 | 603 | struct snd_pcm_sw_params params; |
1da177e4 LT |
604 | int err; |
605 | if (copy_from_user(¶ms, _params, sizeof(params))) | |
606 | return -EFAULT; | |
607 | err = snd_pcm_sw_params(substream, ¶ms); | |
608 | if (copy_to_user(_params, ¶ms, sizeof(params))) | |
609 | return -EFAULT; | |
610 | return err; | |
611 | } | |
612 | ||
877211f5 TI |
613 | int snd_pcm_status(struct snd_pcm_substream *substream, |
614 | struct snd_pcm_status *status) | |
1da177e4 | 615 | { |
877211f5 | 616 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
617 | |
618 | snd_pcm_stream_lock_irq(substream); | |
619 | status->state = runtime->status->state; | |
620 | status->suspended_state = runtime->status->suspended_state; | |
621 | if (status->state == SNDRV_PCM_STATE_OPEN) | |
622 | goto _end; | |
623 | status->trigger_tstamp = runtime->trigger_tstamp; | |
8c121586 | 624 | if (snd_pcm_running(substream)) { |
1da177e4 | 625 | snd_pcm_update_hw_ptr(substream); |
8c121586 JK |
626 | if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) { |
627 | status->tstamp = runtime->status->tstamp; | |
628 | goto _tstamp_end; | |
629 | } | |
630 | } | |
a713b583 | 631 | snd_pcm_gettime(runtime, &status->tstamp); |
8c121586 | 632 | _tstamp_end: |
1da177e4 LT |
633 | status->appl_ptr = runtime->control->appl_ptr; |
634 | status->hw_ptr = runtime->status->hw_ptr; | |
635 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
636 | status->avail = snd_pcm_playback_avail(runtime); | |
637 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
4bbe1ddf | 638 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) { |
1da177e4 | 639 | status->delay = runtime->buffer_size - status->avail; |
4bbe1ddf TI |
640 | status->delay += runtime->delay; |
641 | } else | |
1da177e4 LT |
642 | status->delay = 0; |
643 | } else { | |
644 | status->avail = snd_pcm_capture_avail(runtime); | |
645 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) | |
4bbe1ddf | 646 | status->delay = status->avail + runtime->delay; |
1da177e4 LT |
647 | else |
648 | status->delay = 0; | |
649 | } | |
650 | status->avail_max = runtime->avail_max; | |
651 | status->overrange = runtime->overrange; | |
652 | runtime->avail_max = 0; | |
653 | runtime->overrange = 0; | |
654 | _end: | |
655 | snd_pcm_stream_unlock_irq(substream); | |
656 | return 0; | |
657 | } | |
658 | ||
877211f5 TI |
659 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
660 | struct snd_pcm_status __user * _status) | |
1da177e4 | 661 | { |
877211f5 | 662 | struct snd_pcm_status status; |
1da177e4 LT |
663 | int res; |
664 | ||
1da177e4 LT |
665 | memset(&status, 0, sizeof(status)); |
666 | res = snd_pcm_status(substream, &status); | |
667 | if (res < 0) | |
668 | return res; | |
669 | if (copy_to_user(_status, &status, sizeof(status))) | |
670 | return -EFAULT; | |
671 | return 0; | |
672 | } | |
673 | ||
877211f5 TI |
674 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
675 | struct snd_pcm_channel_info * info) | |
1da177e4 | 676 | { |
877211f5 | 677 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
678 | unsigned int channel; |
679 | ||
1da177e4 LT |
680 | channel = info->channel; |
681 | runtime = substream->runtime; | |
682 | snd_pcm_stream_lock_irq(substream); | |
683 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
684 | snd_pcm_stream_unlock_irq(substream); | |
685 | return -EBADFD; | |
686 | } | |
687 | snd_pcm_stream_unlock_irq(substream); | |
688 | if (channel >= runtime->channels) | |
689 | return -EINVAL; | |
690 | memset(info, 0, sizeof(*info)); | |
691 | info->channel = channel; | |
692 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); | |
693 | } | |
694 | ||
877211f5 TI |
695 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
696 | struct snd_pcm_channel_info __user * _info) | |
1da177e4 | 697 | { |
877211f5 | 698 | struct snd_pcm_channel_info info; |
1da177e4 LT |
699 | int res; |
700 | ||
701 | if (copy_from_user(&info, _info, sizeof(info))) | |
702 | return -EFAULT; | |
703 | res = snd_pcm_channel_info(substream, &info); | |
704 | if (res < 0) | |
705 | return res; | |
706 | if (copy_to_user(_info, &info, sizeof(info))) | |
707 | return -EFAULT; | |
708 | return 0; | |
709 | } | |
710 | ||
877211f5 | 711 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
1da177e4 | 712 | { |
877211f5 | 713 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
714 | if (runtime->trigger_master == NULL) |
715 | return; | |
716 | if (runtime->trigger_master == substream) { | |
b751eef1 | 717 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); |
1da177e4 LT |
718 | } else { |
719 | snd_pcm_trigger_tstamp(runtime->trigger_master); | |
720 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; | |
721 | } | |
722 | runtime->trigger_master = NULL; | |
723 | } | |
724 | ||
725 | struct action_ops { | |
877211f5 TI |
726 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
727 | int (*do_action)(struct snd_pcm_substream *substream, int state); | |
728 | void (*undo_action)(struct snd_pcm_substream *substream, int state); | |
729 | void (*post_action)(struct snd_pcm_substream *substream, int state); | |
1da177e4 LT |
730 | }; |
731 | ||
732 | /* | |
733 | * this functions is core for handling of linked stream | |
734 | * Note: the stream state might be changed also on failure | |
735 | * Note2: call with calling stream lock + link lock | |
736 | */ | |
737 | static int snd_pcm_action_group(struct action_ops *ops, | |
877211f5 | 738 | struct snd_pcm_substream *substream, |
1da177e4 LT |
739 | int state, int do_lock) |
740 | { | |
877211f5 TI |
741 | struct snd_pcm_substream *s = NULL; |
742 | struct snd_pcm_substream *s1; | |
1da177e4 LT |
743 | int res = 0; |
744 | ||
ef991b95 | 745 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 746 | if (do_lock && s != substream) |
208eee2a FD |
747 | spin_lock_nested(&s->self_group.lock, |
748 | SINGLE_DEPTH_NESTING); | |
1da177e4 LT |
749 | res = ops->pre_action(s, state); |
750 | if (res < 0) | |
751 | goto _unlock; | |
752 | } | |
ef991b95 | 753 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
754 | res = ops->do_action(s, state); |
755 | if (res < 0) { | |
756 | if (ops->undo_action) { | |
ef991b95 | 757 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
758 | if (s1 == s) /* failed stream */ |
759 | break; | |
760 | ops->undo_action(s1, state); | |
761 | } | |
762 | } | |
763 | s = NULL; /* unlock all */ | |
764 | goto _unlock; | |
765 | } | |
766 | } | |
ef991b95 | 767 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
768 | ops->post_action(s, state); |
769 | } | |
770 | _unlock: | |
771 | if (do_lock) { | |
772 | /* unlock streams */ | |
ef991b95 | 773 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
774 | if (s1 != substream) |
775 | spin_unlock(&s1->self_group.lock); | |
776 | if (s1 == s) /* end */ | |
777 | break; | |
778 | } | |
779 | } | |
780 | return res; | |
781 | } | |
782 | ||
783 | /* | |
784 | * Note: call with stream lock | |
785 | */ | |
786 | static int snd_pcm_action_single(struct action_ops *ops, | |
877211f5 | 787 | struct snd_pcm_substream *substream, |
1da177e4 LT |
788 | int state) |
789 | { | |
790 | int res; | |
791 | ||
792 | res = ops->pre_action(substream, state); | |
793 | if (res < 0) | |
794 | return res; | |
795 | res = ops->do_action(substream, state); | |
796 | if (res == 0) | |
797 | ops->post_action(substream, state); | |
798 | else if (ops->undo_action) | |
799 | ops->undo_action(substream, state); | |
800 | return res; | |
801 | } | |
802 | ||
803 | /* | |
804 | * Note: call with stream lock | |
805 | */ | |
806 | static int snd_pcm_action(struct action_ops *ops, | |
877211f5 | 807 | struct snd_pcm_substream *substream, |
1da177e4 LT |
808 | int state) |
809 | { | |
810 | int res; | |
811 | ||
812 | if (snd_pcm_stream_linked(substream)) { | |
813 | if (!spin_trylock(&substream->group->lock)) { | |
814 | spin_unlock(&substream->self_group.lock); | |
815 | spin_lock(&substream->group->lock); | |
816 | spin_lock(&substream->self_group.lock); | |
817 | } | |
818 | res = snd_pcm_action_group(ops, substream, state, 1); | |
819 | spin_unlock(&substream->group->lock); | |
820 | } else { | |
821 | res = snd_pcm_action_single(ops, substream, state); | |
822 | } | |
823 | return res; | |
824 | } | |
825 | ||
826 | /* | |
827 | * Note: don't use any locks before | |
828 | */ | |
829 | static int snd_pcm_action_lock_irq(struct action_ops *ops, | |
877211f5 | 830 | struct snd_pcm_substream *substream, |
1da177e4 LT |
831 | int state) |
832 | { | |
833 | int res; | |
834 | ||
835 | read_lock_irq(&snd_pcm_link_rwlock); | |
836 | if (snd_pcm_stream_linked(substream)) { | |
837 | spin_lock(&substream->group->lock); | |
838 | spin_lock(&substream->self_group.lock); | |
839 | res = snd_pcm_action_group(ops, substream, state, 1); | |
840 | spin_unlock(&substream->self_group.lock); | |
841 | spin_unlock(&substream->group->lock); | |
842 | } else { | |
843 | spin_lock(&substream->self_group.lock); | |
844 | res = snd_pcm_action_single(ops, substream, state); | |
845 | spin_unlock(&substream->self_group.lock); | |
846 | } | |
847 | read_unlock_irq(&snd_pcm_link_rwlock); | |
848 | return res; | |
849 | } | |
850 | ||
851 | /* | |
852 | */ | |
853 | static int snd_pcm_action_nonatomic(struct action_ops *ops, | |
877211f5 | 854 | struct snd_pcm_substream *substream, |
1da177e4 LT |
855 | int state) |
856 | { | |
857 | int res; | |
858 | ||
859 | down_read(&snd_pcm_link_rwsem); | |
860 | if (snd_pcm_stream_linked(substream)) | |
861 | res = snd_pcm_action_group(ops, substream, state, 0); | |
862 | else | |
863 | res = snd_pcm_action_single(ops, substream, state); | |
864 | up_read(&snd_pcm_link_rwsem); | |
865 | return res; | |
866 | } | |
867 | ||
868 | /* | |
869 | * start callbacks | |
870 | */ | |
877211f5 | 871 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 872 | { |
877211f5 | 873 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
874 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
875 | return -EBADFD; | |
876 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
877 | !snd_pcm_playback_data(substream)) | |
878 | return -EPIPE; | |
879 | runtime->trigger_master = substream; | |
880 | return 0; | |
881 | } | |
882 | ||
877211f5 | 883 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
884 | { |
885 | if (substream->runtime->trigger_master != substream) | |
886 | return 0; | |
887 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); | |
888 | } | |
889 | ||
877211f5 | 890 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
891 | { |
892 | if (substream->runtime->trigger_master == substream) | |
893 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
894 | } | |
895 | ||
877211f5 | 896 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 897 | { |
877211f5 | 898 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 899 | snd_pcm_trigger_tstamp(substream); |
6af3fb72 | 900 | runtime->hw_ptr_jiffies = jiffies; |
1da177e4 LT |
901 | runtime->status->state = state; |
902 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
903 | runtime->silence_size > 0) | |
904 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1da177e4 | 905 | if (substream->timer) |
877211f5 TI |
906 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
907 | &runtime->trigger_tstamp); | |
1da177e4 LT |
908 | } |
909 | ||
910 | static struct action_ops snd_pcm_action_start = { | |
911 | .pre_action = snd_pcm_pre_start, | |
912 | .do_action = snd_pcm_do_start, | |
913 | .undo_action = snd_pcm_undo_start, | |
914 | .post_action = snd_pcm_post_start | |
915 | }; | |
916 | ||
917 | /** | |
1c85cc64 | 918 | * snd_pcm_start - start all linked streams |
df8db936 | 919 | * @substream: the PCM substream instance |
1da177e4 | 920 | */ |
877211f5 | 921 | int snd_pcm_start(struct snd_pcm_substream *substream) |
1da177e4 | 922 | { |
877211f5 TI |
923 | return snd_pcm_action(&snd_pcm_action_start, substream, |
924 | SNDRV_PCM_STATE_RUNNING); | |
1da177e4 LT |
925 | } |
926 | ||
927 | /* | |
928 | * stop callbacks | |
929 | */ | |
877211f5 | 930 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 931 | { |
877211f5 | 932 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
933 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
934 | return -EBADFD; | |
935 | runtime->trigger_master = substream; | |
936 | return 0; | |
937 | } | |
938 | ||
877211f5 | 939 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
940 | { |
941 | if (substream->runtime->trigger_master == substream && | |
942 | snd_pcm_running(substream)) | |
943 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
944 | return 0; /* unconditonally stop all substreams */ | |
945 | } | |
946 | ||
877211f5 | 947 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 948 | { |
877211f5 | 949 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
950 | if (runtime->status->state != state) { |
951 | snd_pcm_trigger_tstamp(substream); | |
952 | if (substream->timer) | |
877211f5 TI |
953 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
954 | &runtime->trigger_tstamp); | |
1da177e4 | 955 | runtime->status->state = state; |
1da177e4 LT |
956 | } |
957 | wake_up(&runtime->sleep); | |
c91a988d | 958 | wake_up(&runtime->tsleep); |
1da177e4 LT |
959 | } |
960 | ||
961 | static struct action_ops snd_pcm_action_stop = { | |
962 | .pre_action = snd_pcm_pre_stop, | |
963 | .do_action = snd_pcm_do_stop, | |
964 | .post_action = snd_pcm_post_stop | |
965 | }; | |
966 | ||
967 | /** | |
1c85cc64 | 968 | * snd_pcm_stop - try to stop all running streams in the substream group |
df8db936 TI |
969 | * @substream: the PCM substream instance |
970 | * @state: PCM state after stopping the stream | |
1da177e4 | 971 | * |
1c85cc64 | 972 | * The state of each stream is then changed to the given state unconditionally. |
1da177e4 | 973 | */ |
877211f5 | 974 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
975 | { |
976 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); | |
977 | } | |
978 | ||
e88e8ae6 TI |
979 | EXPORT_SYMBOL(snd_pcm_stop); |
980 | ||
1da177e4 | 981 | /** |
1c85cc64 | 982 | * snd_pcm_drain_done - stop the DMA only when the given stream is playback |
df8db936 | 983 | * @substream: the PCM substream |
1da177e4 | 984 | * |
1c85cc64 | 985 | * After stopping, the state is changed to SETUP. |
1da177e4 LT |
986 | * Unlike snd_pcm_stop(), this affects only the given stream. |
987 | */ | |
877211f5 | 988 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
1da177e4 | 989 | { |
877211f5 TI |
990 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
991 | SNDRV_PCM_STATE_SETUP); | |
1da177e4 LT |
992 | } |
993 | ||
994 | /* | |
995 | * pause callbacks | |
996 | */ | |
877211f5 | 997 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 998 | { |
877211f5 | 999 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1000 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
1001 | return -ENOSYS; | |
1002 | if (push) { | |
1003 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) | |
1004 | return -EBADFD; | |
1005 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) | |
1006 | return -EBADFD; | |
1007 | runtime->trigger_master = substream; | |
1008 | return 0; | |
1009 | } | |
1010 | ||
877211f5 | 1011 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1012 | { |
1013 | if (substream->runtime->trigger_master != substream) | |
1014 | return 0; | |
6af3fb72 TI |
1015 | /* The jiffies check in snd_pcm_update_hw_ptr*() is done by |
1016 | * a delta betwen the current jiffies, this gives a large enough | |
1017 | * delta, effectively to skip the check once. | |
1018 | */ | |
1019 | substream->runtime->hw_ptr_jiffies = jiffies - HZ * 1000; | |
1da177e4 LT |
1020 | return substream->ops->trigger(substream, |
1021 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : | |
1022 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
1023 | } | |
1024 | ||
877211f5 | 1025 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1026 | { |
1027 | if (substream->runtime->trigger_master == substream) | |
1028 | substream->ops->trigger(substream, | |
1029 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : | |
1030 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
1031 | } | |
1032 | ||
877211f5 | 1033 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 1034 | { |
877211f5 | 1035 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1036 | snd_pcm_trigger_tstamp(substream); |
1037 | if (push) { | |
1038 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; | |
1039 | if (substream->timer) | |
877211f5 TI |
1040 | snd_timer_notify(substream->timer, |
1041 | SNDRV_TIMER_EVENT_MPAUSE, | |
1042 | &runtime->trigger_tstamp); | |
1da177e4 | 1043 | wake_up(&runtime->sleep); |
c91a988d | 1044 | wake_up(&runtime->tsleep); |
1da177e4 LT |
1045 | } else { |
1046 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; | |
1da177e4 | 1047 | if (substream->timer) |
877211f5 TI |
1048 | snd_timer_notify(substream->timer, |
1049 | SNDRV_TIMER_EVENT_MCONTINUE, | |
1050 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1051 | } |
1052 | } | |
1053 | ||
1054 | static struct action_ops snd_pcm_action_pause = { | |
1055 | .pre_action = snd_pcm_pre_pause, | |
1056 | .do_action = snd_pcm_do_pause, | |
1057 | .undo_action = snd_pcm_undo_pause, | |
1058 | .post_action = snd_pcm_post_pause | |
1059 | }; | |
1060 | ||
1061 | /* | |
1062 | * Push/release the pause for all linked streams. | |
1063 | */ | |
877211f5 | 1064 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1065 | { |
1066 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); | |
1067 | } | |
1068 | ||
1069 | #ifdef CONFIG_PM | |
1070 | /* suspend */ | |
1071 | ||
877211f5 | 1072 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1073 | { |
877211f5 | 1074 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1075 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
1076 | return -EBUSY; | |
1077 | runtime->trigger_master = substream; | |
1078 | return 0; | |
1079 | } | |
1080 | ||
877211f5 | 1081 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1082 | { |
877211f5 | 1083 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1084 | if (runtime->trigger_master != substream) |
1085 | return 0; | |
1086 | if (! snd_pcm_running(substream)) | |
1087 | return 0; | |
1088 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1089 | return 0; /* suspend unconditionally */ | |
1090 | } | |
1091 | ||
877211f5 | 1092 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1093 | { |
877211f5 | 1094 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1095 | snd_pcm_trigger_tstamp(substream); |
1096 | if (substream->timer) | |
877211f5 TI |
1097 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
1098 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1099 | runtime->status->suspended_state = runtime->status->state; |
1100 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; | |
1da177e4 | 1101 | wake_up(&runtime->sleep); |
c91a988d | 1102 | wake_up(&runtime->tsleep); |
1da177e4 LT |
1103 | } |
1104 | ||
1105 | static struct action_ops snd_pcm_action_suspend = { | |
1106 | .pre_action = snd_pcm_pre_suspend, | |
1107 | .do_action = snd_pcm_do_suspend, | |
1108 | .post_action = snd_pcm_post_suspend | |
1109 | }; | |
1110 | ||
1111 | /** | |
1c85cc64 | 1112 | * snd_pcm_suspend - trigger SUSPEND to all linked streams |
df8db936 | 1113 | * @substream: the PCM substream |
1da177e4 | 1114 | * |
1da177e4 LT |
1115 | * After this call, all streams are changed to SUSPENDED state. |
1116 | */ | |
877211f5 | 1117 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
1da177e4 LT |
1118 | { |
1119 | int err; | |
1120 | unsigned long flags; | |
1121 | ||
603bf524 TI |
1122 | if (! substream) |
1123 | return 0; | |
1124 | ||
1da177e4 LT |
1125 | snd_pcm_stream_lock_irqsave(substream, flags); |
1126 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); | |
1127 | snd_pcm_stream_unlock_irqrestore(substream, flags); | |
1128 | return err; | |
1129 | } | |
1130 | ||
e88e8ae6 TI |
1131 | EXPORT_SYMBOL(snd_pcm_suspend); |
1132 | ||
1da177e4 | 1133 | /** |
1c85cc64 | 1134 | * snd_pcm_suspend_all - trigger SUSPEND to all substreams in the given pcm |
df8db936 | 1135 | * @pcm: the PCM instance |
1da177e4 | 1136 | * |
1da177e4 LT |
1137 | * After this call, all streams are changed to SUSPENDED state. |
1138 | */ | |
877211f5 | 1139 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
1da177e4 | 1140 | { |
877211f5 | 1141 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1142 | int stream, err = 0; |
1143 | ||
603bf524 TI |
1144 | if (! pcm) |
1145 | return 0; | |
1146 | ||
1da177e4 | 1147 | for (stream = 0; stream < 2; stream++) { |
877211f5 TI |
1148 | for (substream = pcm->streams[stream].substream; |
1149 | substream; substream = substream->next) { | |
1da177e4 LT |
1150 | /* FIXME: the open/close code should lock this as well */ |
1151 | if (substream->runtime == NULL) | |
1152 | continue; | |
1153 | err = snd_pcm_suspend(substream); | |
1154 | if (err < 0 && err != -EBUSY) | |
1155 | return err; | |
1156 | } | |
1157 | } | |
1158 | return 0; | |
1159 | } | |
1160 | ||
e88e8ae6 TI |
1161 | EXPORT_SYMBOL(snd_pcm_suspend_all); |
1162 | ||
1da177e4 LT |
1163 | /* resume */ |
1164 | ||
877211f5 | 1165 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1166 | { |
877211f5 | 1167 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1168 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
1169 | return -ENOSYS; | |
1170 | runtime->trigger_master = substream; | |
1171 | return 0; | |
1172 | } | |
1173 | ||
877211f5 | 1174 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1175 | { |
877211f5 | 1176 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1177 | if (runtime->trigger_master != substream) |
1178 | return 0; | |
1179 | /* DMA not running previously? */ | |
1180 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && | |
1181 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || | |
1182 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
1183 | return 0; | |
1184 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); | |
1185 | } | |
1186 | ||
877211f5 | 1187 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1188 | { |
1189 | if (substream->runtime->trigger_master == substream && | |
1190 | snd_pcm_running(substream)) | |
1191 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1192 | } | |
1193 | ||
877211f5 | 1194 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1195 | { |
877211f5 | 1196 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1197 | snd_pcm_trigger_tstamp(substream); |
1198 | if (substream->timer) | |
877211f5 TI |
1199 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
1200 | &runtime->trigger_tstamp); | |
1da177e4 | 1201 | runtime->status->state = runtime->status->suspended_state; |
1da177e4 LT |
1202 | } |
1203 | ||
1204 | static struct action_ops snd_pcm_action_resume = { | |
1205 | .pre_action = snd_pcm_pre_resume, | |
1206 | .do_action = snd_pcm_do_resume, | |
1207 | .undo_action = snd_pcm_undo_resume, | |
1208 | .post_action = snd_pcm_post_resume | |
1209 | }; | |
1210 | ||
877211f5 | 1211 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 | 1212 | { |
877211f5 | 1213 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1214 | int res; |
1215 | ||
1216 | snd_power_lock(card); | |
cbac4b0c | 1217 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
1da177e4 LT |
1218 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
1219 | snd_power_unlock(card); | |
1220 | return res; | |
1221 | } | |
1222 | ||
1223 | #else | |
1224 | ||
877211f5 | 1225 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 LT |
1226 | { |
1227 | return -ENOSYS; | |
1228 | } | |
1229 | ||
1230 | #endif /* CONFIG_PM */ | |
1231 | ||
1232 | /* | |
1233 | * xrun ioctl | |
1234 | * | |
1235 | * Change the RUNNING stream(s) to XRUN state. | |
1236 | */ | |
877211f5 | 1237 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
1da177e4 | 1238 | { |
877211f5 TI |
1239 | struct snd_card *card = substream->pcm->card; |
1240 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
1241 | int result; |
1242 | ||
1243 | snd_power_lock(card); | |
1244 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1245 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1246 | if (result < 0) |
1247 | goto _unlock; | |
1248 | } | |
1249 | ||
1250 | snd_pcm_stream_lock_irq(substream); | |
1251 | switch (runtime->status->state) { | |
1252 | case SNDRV_PCM_STATE_XRUN: | |
1253 | result = 0; /* already there */ | |
1254 | break; | |
1255 | case SNDRV_PCM_STATE_RUNNING: | |
1256 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
1257 | break; | |
1258 | default: | |
1259 | result = -EBADFD; | |
1260 | } | |
1261 | snd_pcm_stream_unlock_irq(substream); | |
1262 | _unlock: | |
1263 | snd_power_unlock(card); | |
1264 | return result; | |
1265 | } | |
1266 | ||
1267 | /* | |
1268 | * reset ioctl | |
1269 | */ | |
877211f5 | 1270 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1271 | { |
877211f5 | 1272 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1273 | switch (runtime->status->state) { |
1274 | case SNDRV_PCM_STATE_RUNNING: | |
1275 | case SNDRV_PCM_STATE_PREPARED: | |
1276 | case SNDRV_PCM_STATE_PAUSED: | |
1277 | case SNDRV_PCM_STATE_SUSPENDED: | |
1278 | return 0; | |
1279 | default: | |
1280 | return -EBADFD; | |
1281 | } | |
1282 | } | |
1283 | ||
877211f5 | 1284 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1285 | { |
877211f5 | 1286 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1287 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
1288 | if (err < 0) | |
1289 | return err; | |
1da177e4 | 1290 | runtime->hw_ptr_base = 0; |
e7636925 JK |
1291 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
1292 | runtime->status->hw_ptr % runtime->period_size; | |
1da177e4 LT |
1293 | runtime->silence_start = runtime->status->hw_ptr; |
1294 | runtime->silence_filled = 0; | |
1295 | return 0; | |
1296 | } | |
1297 | ||
877211f5 | 1298 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1299 | { |
877211f5 | 1300 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1301 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1302 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
1303 | runtime->silence_size > 0) | |
1304 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1305 | } | |
1306 | ||
1307 | static struct action_ops snd_pcm_action_reset = { | |
1308 | .pre_action = snd_pcm_pre_reset, | |
1309 | .do_action = snd_pcm_do_reset, | |
1310 | .post_action = snd_pcm_post_reset | |
1311 | }; | |
1312 | ||
877211f5 | 1313 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
1da177e4 LT |
1314 | { |
1315 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); | |
1316 | } | |
1317 | ||
1318 | /* | |
1319 | * prepare ioctl | |
1320 | */ | |
0df63e44 TI |
1321 | /* we use the second argument for updating f_flags */ |
1322 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, | |
1323 | int f_flags) | |
1da177e4 | 1324 | { |
877211f5 | 1325 | struct snd_pcm_runtime *runtime = substream->runtime; |
de1b8b93 TI |
1326 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1327 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1328 | return -EBADFD; |
1329 | if (snd_pcm_running(substream)) | |
1330 | return -EBUSY; | |
0df63e44 | 1331 | substream->f_flags = f_flags; |
1da177e4 LT |
1332 | return 0; |
1333 | } | |
1334 | ||
877211f5 | 1335 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1336 | { |
1337 | int err; | |
1338 | err = substream->ops->prepare(substream); | |
1339 | if (err < 0) | |
1340 | return err; | |
1341 | return snd_pcm_do_reset(substream, 0); | |
1342 | } | |
1343 | ||
877211f5 | 1344 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1345 | { |
877211f5 | 1346 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1347 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1348 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; | |
1349 | } | |
1350 | ||
1351 | static struct action_ops snd_pcm_action_prepare = { | |
1352 | .pre_action = snd_pcm_pre_prepare, | |
1353 | .do_action = snd_pcm_do_prepare, | |
1354 | .post_action = snd_pcm_post_prepare | |
1355 | }; | |
1356 | ||
1357 | /** | |
1c85cc64 | 1358 | * snd_pcm_prepare - prepare the PCM substream to be triggerable |
df8db936 | 1359 | * @substream: the PCM substream instance |
0df63e44 | 1360 | * @file: file to refer f_flags |
1da177e4 | 1361 | */ |
0df63e44 TI |
1362 | static int snd_pcm_prepare(struct snd_pcm_substream *substream, |
1363 | struct file *file) | |
1da177e4 LT |
1364 | { |
1365 | int res; | |
877211f5 | 1366 | struct snd_card *card = substream->pcm->card; |
0df63e44 TI |
1367 | int f_flags; |
1368 | ||
1369 | if (file) | |
1370 | f_flags = file->f_flags; | |
1371 | else | |
1372 | f_flags = substream->f_flags; | |
1da177e4 LT |
1373 | |
1374 | snd_power_lock(card); | |
cbac4b0c | 1375 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
0df63e44 TI |
1376 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, |
1377 | substream, f_flags); | |
1da177e4 LT |
1378 | snd_power_unlock(card); |
1379 | return res; | |
1380 | } | |
1381 | ||
1382 | /* | |
1383 | * drain ioctl | |
1384 | */ | |
1385 | ||
877211f5 | 1386 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1387 | { |
1da177e4 LT |
1388 | substream->runtime->trigger_master = substream; |
1389 | return 0; | |
1390 | } | |
1391 | ||
877211f5 | 1392 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1393 | { |
877211f5 | 1394 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1395 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1396 | switch (runtime->status->state) { | |
1397 | case SNDRV_PCM_STATE_PREPARED: | |
1398 | /* start playback stream if possible */ | |
1399 | if (! snd_pcm_playback_empty(substream)) { | |
1400 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1401 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1402 | } | |
1403 | break; | |
1404 | case SNDRV_PCM_STATE_RUNNING: | |
1405 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; | |
1406 | break; | |
1407 | default: | |
1408 | break; | |
1409 | } | |
1410 | } else { | |
1411 | /* stop running stream */ | |
1412 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { | |
b05e5787 | 1413 | int new_state = snd_pcm_capture_avail(runtime) > 0 ? |
1da177e4 | 1414 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; |
b05e5787 MÅš |
1415 | snd_pcm_do_stop(substream, new_state); |
1416 | snd_pcm_post_stop(substream, new_state); | |
1da177e4 LT |
1417 | } |
1418 | } | |
1419 | return 0; | |
1420 | } | |
1421 | ||
877211f5 | 1422 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1423 | { |
1424 | } | |
1425 | ||
1426 | static struct action_ops snd_pcm_action_drain_init = { | |
1427 | .pre_action = snd_pcm_pre_drain_init, | |
1428 | .do_action = snd_pcm_do_drain_init, | |
1429 | .post_action = snd_pcm_post_drain_init | |
1430 | }; | |
1431 | ||
877211f5 | 1432 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
1da177e4 LT |
1433 | |
1434 | /* | |
1435 | * Drain the stream(s). | |
1436 | * When the substream is linked, sync until the draining of all playback streams | |
1437 | * is finished. | |
1438 | * After this call, all streams are supposed to be either SETUP or DRAINING | |
1439 | * (capture only) state. | |
1440 | */ | |
4cdc115f TI |
1441 | static int snd_pcm_drain(struct snd_pcm_substream *substream, |
1442 | struct file *file) | |
1da177e4 | 1443 | { |
877211f5 TI |
1444 | struct snd_card *card; |
1445 | struct snd_pcm_runtime *runtime; | |
ef991b95 | 1446 | struct snd_pcm_substream *s; |
d3a7dcfe | 1447 | wait_queue_t wait; |
1da177e4 | 1448 | int result = 0; |
4cdc115f | 1449 | int nonblock = 0; |
1da177e4 | 1450 | |
1da177e4 LT |
1451 | card = substream->pcm->card; |
1452 | runtime = substream->runtime; | |
1453 | ||
1454 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1455 | return -EBADFD; | |
1456 | ||
1da177e4 LT |
1457 | snd_power_lock(card); |
1458 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1459 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
21cb2a2e TI |
1460 | if (result < 0) { |
1461 | snd_power_unlock(card); | |
1462 | return result; | |
1463 | } | |
1da177e4 LT |
1464 | } |
1465 | ||
4cdc115f TI |
1466 | if (file) { |
1467 | if (file->f_flags & O_NONBLOCK) | |
1468 | nonblock = 1; | |
1469 | } else if (substream->f_flags & O_NONBLOCK) | |
1470 | nonblock = 1; | |
1471 | ||
21cb2a2e | 1472 | down_read(&snd_pcm_link_rwsem); |
21cb2a2e TI |
1473 | snd_pcm_stream_lock_irq(substream); |
1474 | /* resume pause */ | |
d3a7dcfe | 1475 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) |
21cb2a2e TI |
1476 | snd_pcm_pause(substream, 0); |
1477 | ||
1478 | /* pre-start/stop - all running streams are changed to DRAINING state */ | |
1479 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); | |
4cdc115f TI |
1480 | if (result < 0) |
1481 | goto unlock; | |
1482 | /* in non-blocking, we don't wait in ioctl but let caller poll */ | |
1483 | if (nonblock) { | |
1484 | result = -EAGAIN; | |
1485 | goto unlock; | |
21cb2a2e | 1486 | } |
1da177e4 LT |
1487 | |
1488 | for (;;) { | |
1489 | long tout; | |
d3a7dcfe | 1490 | struct snd_pcm_runtime *to_check; |
1da177e4 LT |
1491 | if (signal_pending(current)) { |
1492 | result = -ERESTARTSYS; | |
1493 | break; | |
1494 | } | |
d3a7dcfe TI |
1495 | /* find a substream to drain */ |
1496 | to_check = NULL; | |
1497 | snd_pcm_group_for_each_entry(s, substream) { | |
1498 | if (s->stream != SNDRV_PCM_STREAM_PLAYBACK) | |
1499 | continue; | |
1500 | runtime = s->runtime; | |
1501 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { | |
1502 | to_check = runtime; | |
21cb2a2e | 1503 | break; |
d3a7dcfe | 1504 | } |
21cb2a2e | 1505 | } |
d3a7dcfe TI |
1506 | if (!to_check) |
1507 | break; /* all drained */ | |
1508 | init_waitqueue_entry(&wait, current); | |
1509 | add_wait_queue(&to_check->sleep, &wait); | |
1da177e4 LT |
1510 | set_current_state(TASK_INTERRUPTIBLE); |
1511 | snd_pcm_stream_unlock_irq(substream); | |
d3a7dcfe | 1512 | up_read(&snd_pcm_link_rwsem); |
1da177e4 LT |
1513 | snd_power_unlock(card); |
1514 | tout = schedule_timeout(10 * HZ); | |
1515 | snd_power_lock(card); | |
d3a7dcfe | 1516 | down_read(&snd_pcm_link_rwsem); |
1da177e4 | 1517 | snd_pcm_stream_lock_irq(substream); |
d3a7dcfe | 1518 | remove_wait_queue(&to_check->sleep, &wait); |
1da177e4 LT |
1519 | if (tout == 0) { |
1520 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1521 | result = -ESTRPIPE; | |
1522 | else { | |
1523 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); | |
1524 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1525 | result = -EIO; | |
1526 | } | |
1527 | break; | |
1528 | } | |
1da177e4 | 1529 | } |
21cb2a2e | 1530 | |
4cdc115f | 1531 | unlock: |
21cb2a2e | 1532 | snd_pcm_stream_unlock_irq(substream); |
d3a7dcfe | 1533 | up_read(&snd_pcm_link_rwsem); |
1da177e4 | 1534 | snd_power_unlock(card); |
1da177e4 LT |
1535 | |
1536 | return result; | |
1537 | } | |
1538 | ||
1539 | /* | |
1540 | * drop ioctl | |
1541 | * | |
1542 | * Immediately put all linked substreams into SETUP state. | |
1543 | */ | |
877211f5 | 1544 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
1da177e4 | 1545 | { |
877211f5 TI |
1546 | struct snd_pcm_runtime *runtime; |
1547 | struct snd_card *card; | |
1da177e4 LT |
1548 | int result = 0; |
1549 | ||
7eaa943c TI |
1550 | if (PCM_RUNTIME_CHECK(substream)) |
1551 | return -ENXIO; | |
1da177e4 LT |
1552 | runtime = substream->runtime; |
1553 | card = substream->pcm->card; | |
1554 | ||
de1b8b93 | 1555 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
24e8fc49 TI |
1556 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED || |
1557 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1da177e4 LT |
1558 | return -EBADFD; |
1559 | ||
1da177e4 LT |
1560 | snd_pcm_stream_lock_irq(substream); |
1561 | /* resume pause */ | |
1562 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1563 | snd_pcm_pause(substream, 0); | |
1564 | ||
1565 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1566 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ | |
1567 | snd_pcm_stream_unlock_irq(substream); | |
24e8fc49 | 1568 | |
1da177e4 LT |
1569 | return result; |
1570 | } | |
1571 | ||
1572 | ||
1573 | /* WARNING: Don't forget to fput back the file */ | |
1da177e4 LT |
1574 | static struct file *snd_pcm_file_fd(int fd) |
1575 | { | |
1576 | struct file *file; | |
1577 | struct inode *inode; | |
f87135f5 CL |
1578 | unsigned int minor; |
1579 | ||
1da177e4 LT |
1580 | file = fget(fd); |
1581 | if (!file) | |
1582 | return NULL; | |
7bc56323 | 1583 | inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
1584 | if (!S_ISCHR(inode->i_mode) || |
1585 | imajor(inode) != snd_major) { | |
1586 | fput(file); | |
1587 | return NULL; | |
1588 | } | |
1589 | minor = iminor(inode); | |
f87135f5 CL |
1590 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
1591 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { | |
1da177e4 LT |
1592 | fput(file); |
1593 | return NULL; | |
1594 | } | |
1595 | return file; | |
1596 | } | |
1597 | ||
1598 | /* | |
1599 | * PCM link handling | |
1600 | */ | |
877211f5 | 1601 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
1da177e4 LT |
1602 | { |
1603 | int res = 0; | |
1604 | struct file *file; | |
877211f5 TI |
1605 | struct snd_pcm_file *pcm_file; |
1606 | struct snd_pcm_substream *substream1; | |
1da177e4 LT |
1607 | |
1608 | file = snd_pcm_file_fd(fd); | |
1609 | if (!file) | |
1610 | return -EBADFD; | |
1611 | pcm_file = file->private_data; | |
1612 | substream1 = pcm_file->substream; | |
1613 | down_write(&snd_pcm_link_rwsem); | |
1614 | write_lock_irq(&snd_pcm_link_rwlock); | |
1615 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || | |
1616 | substream->runtime->status->state != substream1->runtime->status->state) { | |
1617 | res = -EBADFD; | |
1618 | goto _end; | |
1619 | } | |
1620 | if (snd_pcm_stream_linked(substream1)) { | |
1621 | res = -EALREADY; | |
1622 | goto _end; | |
1623 | } | |
1624 | if (!snd_pcm_stream_linked(substream)) { | |
877211f5 | 1625 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
1da177e4 LT |
1626 | if (substream->group == NULL) { |
1627 | res = -ENOMEM; | |
1628 | goto _end; | |
1629 | } | |
1630 | spin_lock_init(&substream->group->lock); | |
1631 | INIT_LIST_HEAD(&substream->group->substreams); | |
1632 | list_add_tail(&substream->link_list, &substream->group->substreams); | |
1633 | substream->group->count = 1; | |
1634 | } | |
1635 | list_add_tail(&substream1->link_list, &substream->group->substreams); | |
1636 | substream->group->count++; | |
1637 | substream1->group = substream->group; | |
1638 | _end: | |
1639 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1640 | up_write(&snd_pcm_link_rwsem); | |
1641 | fput(file); | |
1642 | return res; | |
1643 | } | |
1644 | ||
877211f5 | 1645 | static void relink_to_local(struct snd_pcm_substream *substream) |
1da177e4 LT |
1646 | { |
1647 | substream->group = &substream->self_group; | |
1648 | INIT_LIST_HEAD(&substream->self_group.substreams); | |
1649 | list_add_tail(&substream->link_list, &substream->self_group.substreams); | |
1650 | } | |
1651 | ||
877211f5 | 1652 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
1da177e4 | 1653 | { |
ef991b95 | 1654 | struct snd_pcm_substream *s; |
1da177e4 LT |
1655 | int res = 0; |
1656 | ||
1657 | down_write(&snd_pcm_link_rwsem); | |
1658 | write_lock_irq(&snd_pcm_link_rwlock); | |
1659 | if (!snd_pcm_stream_linked(substream)) { | |
1660 | res = -EALREADY; | |
1661 | goto _end; | |
1662 | } | |
1663 | list_del(&substream->link_list); | |
1664 | substream->group->count--; | |
1665 | if (substream->group->count == 1) { /* detach the last stream, too */ | |
ef991b95 TI |
1666 | snd_pcm_group_for_each_entry(s, substream) { |
1667 | relink_to_local(s); | |
1da177e4 LT |
1668 | break; |
1669 | } | |
1670 | kfree(substream->group); | |
1671 | } | |
1672 | relink_to_local(substream); | |
1673 | _end: | |
1674 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1675 | up_write(&snd_pcm_link_rwsem); | |
1676 | return res; | |
1677 | } | |
1678 | ||
1679 | /* | |
1680 | * hw configurator | |
1681 | */ | |
877211f5 TI |
1682 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
1683 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1684 | { |
877211f5 | 1685 | struct snd_interval t; |
1da177e4 LT |
1686 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
1687 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1688 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1689 | } | |
1690 | ||
877211f5 TI |
1691 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
1692 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1693 | { |
877211f5 | 1694 | struct snd_interval t; |
1da177e4 LT |
1695 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
1696 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1697 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1698 | } | |
1699 | ||
877211f5 TI |
1700 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
1701 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1702 | { |
877211f5 | 1703 | struct snd_interval t; |
1da177e4 LT |
1704 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
1705 | hw_param_interval_c(params, rule->deps[1]), | |
1706 | (unsigned long) rule->private, &t); | |
1707 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1708 | } | |
1709 | ||
877211f5 TI |
1710 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
1711 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1712 | { |
877211f5 | 1713 | struct snd_interval t; |
1da177e4 LT |
1714 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
1715 | (unsigned long) rule->private, | |
1716 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1717 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1718 | } | |
1719 | ||
877211f5 TI |
1720 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
1721 | struct snd_pcm_hw_rule *rule) | |
1da177e4 LT |
1722 | { |
1723 | unsigned int k; | |
877211f5 TI |
1724 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
1725 | struct snd_mask m; | |
1726 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1727 | snd_mask_any(&m); |
1728 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1729 | int bits; | |
1730 | if (! snd_mask_test(mask, k)) | |
1731 | continue; | |
1732 | bits = snd_pcm_format_physical_width(k); | |
1733 | if (bits <= 0) | |
1734 | continue; /* ignore invalid formats */ | |
1735 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) | |
1736 | snd_mask_reset(&m, k); | |
1737 | } | |
1738 | return snd_mask_refine(mask, &m); | |
1739 | } | |
1740 | ||
877211f5 TI |
1741 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
1742 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1743 | { |
877211f5 | 1744 | struct snd_interval t; |
1da177e4 LT |
1745 | unsigned int k; |
1746 | t.min = UINT_MAX; | |
1747 | t.max = 0; | |
1748 | t.openmin = 0; | |
1749 | t.openmax = 0; | |
1750 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1751 | int bits; | |
1752 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) | |
1753 | continue; | |
1754 | bits = snd_pcm_format_physical_width(k); | |
1755 | if (bits <= 0) | |
1756 | continue; /* ignore invalid formats */ | |
1757 | if (t.min > (unsigned)bits) | |
1758 | t.min = bits; | |
1759 | if (t.max < (unsigned)bits) | |
1760 | t.max = bits; | |
1761 | } | |
1762 | t.integer = 1; | |
1763 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1764 | } | |
1765 | ||
1766 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 | |
1767 | #error "Change this table" | |
1768 | #endif | |
1769 | ||
1770 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
1771 | 48000, 64000, 88200, 96000, 176400, 192000 }; | |
1772 | ||
7653d557 CL |
1773 | const struct snd_pcm_hw_constraint_list snd_pcm_known_rates = { |
1774 | .count = ARRAY_SIZE(rates), | |
1775 | .list = rates, | |
1776 | }; | |
1777 | ||
877211f5 TI |
1778 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
1779 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1780 | { |
877211f5 | 1781 | struct snd_pcm_hardware *hw = rule->private; |
1da177e4 | 1782 | return snd_interval_list(hw_param_interval(params, rule->var), |
7653d557 CL |
1783 | snd_pcm_known_rates.count, |
1784 | snd_pcm_known_rates.list, hw->rates); | |
1da177e4 LT |
1785 | } |
1786 | ||
877211f5 TI |
1787 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
1788 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1789 | { |
877211f5 TI |
1790 | struct snd_interval t; |
1791 | struct snd_pcm_substream *substream = rule->private; | |
1da177e4 LT |
1792 | t.min = 0; |
1793 | t.max = substream->buffer_bytes_max; | |
1794 | t.openmin = 0; | |
1795 | t.openmax = 0; | |
1796 | t.integer = 1; | |
1797 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1798 | } | |
1799 | ||
877211f5 | 1800 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
1da177e4 | 1801 | { |
877211f5 TI |
1802 | struct snd_pcm_runtime *runtime = substream->runtime; |
1803 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; | |
1da177e4 LT |
1804 | int k, err; |
1805 | ||
1806 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
1807 | snd_mask_any(constrs_mask(constrs, k)); | |
1808 | } | |
1809 | ||
1810 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
1811 | snd_interval_any(constrs_interval(constrs, k)); | |
1812 | } | |
1813 | ||
1814 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); | |
1815 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); | |
1816 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); | |
1817 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); | |
1818 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); | |
1819 | ||
1820 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1821 | snd_pcm_hw_rule_format, NULL, | |
1822 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1823 | if (err < 0) | |
1824 | return err; | |
1825 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1826 | snd_pcm_hw_rule_sample_bits, NULL, | |
1827 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1828 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1829 | if (err < 0) | |
1830 | return err; | |
1831 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1832 | snd_pcm_hw_rule_div, NULL, | |
1833 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1834 | if (err < 0) | |
1835 | return err; | |
1836 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1837 | snd_pcm_hw_rule_mul, NULL, | |
1838 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1839 | if (err < 0) | |
1840 | return err; | |
1841 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1842 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1843 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1844 | if (err < 0) | |
1845 | return err; | |
1846 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1847 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1848 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
1849 | if (err < 0) | |
1850 | return err; | |
1851 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1852 | snd_pcm_hw_rule_div, NULL, | |
1853 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1854 | if (err < 0) | |
1855 | return err; | |
1856 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1857 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1858 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); | |
1859 | if (err < 0) | |
1860 | return err; | |
1861 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1862 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1863 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); | |
1864 | if (err < 0) | |
1865 | return err; | |
1866 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1867 | snd_pcm_hw_rule_div, NULL, | |
1868 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1869 | if (err < 0) | |
1870 | return err; | |
1871 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1872 | snd_pcm_hw_rule_div, NULL, | |
1873 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1874 | if (err < 0) | |
1875 | return err; | |
1876 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1877 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1878 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1879 | if (err < 0) | |
1880 | return err; | |
1881 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1882 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1883 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1884 | if (err < 0) | |
1885 | return err; | |
1886 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1887 | snd_pcm_hw_rule_mul, NULL, | |
1888 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1889 | if (err < 0) | |
1890 | return err; | |
1891 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1892 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1893 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1894 | if (err < 0) | |
1895 | return err; | |
1896 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1897 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1898 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1899 | if (err < 0) | |
1900 | return err; | |
1901 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1902 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1903 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1904 | if (err < 0) | |
1905 | return err; | |
1906 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1907 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1908 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1909 | if (err < 0) | |
1910 | return err; | |
1911 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1912 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1913 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1914 | if (err < 0) | |
1915 | return err; | |
1916 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, | |
1917 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1918 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1919 | if (err < 0) | |
1920 | return err; | |
1921 | return 0; | |
1922 | } | |
1923 | ||
877211f5 | 1924 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
1da177e4 | 1925 | { |
877211f5 TI |
1926 | struct snd_pcm_runtime *runtime = substream->runtime; |
1927 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1da177e4 LT |
1928 | int err; |
1929 | unsigned int mask = 0; | |
1930 | ||
1931 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1932 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; | |
1933 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1934 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; | |
1935 | if (hw->info & SNDRV_PCM_INFO_MMAP) { | |
1936 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1937 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
1938 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1939 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; | |
1940 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) | |
1941 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; | |
1942 | } | |
1943 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); | |
7eaa943c TI |
1944 | if (err < 0) |
1945 | return err; | |
1da177e4 LT |
1946 | |
1947 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); | |
7eaa943c TI |
1948 | if (err < 0) |
1949 | return err; | |
1da177e4 LT |
1950 | |
1951 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); | |
7eaa943c TI |
1952 | if (err < 0) |
1953 | return err; | |
1da177e4 LT |
1954 | |
1955 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1956 | hw->channels_min, hw->channels_max); | |
7eaa943c TI |
1957 | if (err < 0) |
1958 | return err; | |
1da177e4 LT |
1959 | |
1960 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, | |
1961 | hw->rate_min, hw->rate_max); | |
8b90ca08 GL |
1962 | if (err < 0) |
1963 | return err; | |
1da177e4 LT |
1964 | |
1965 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1966 | hw->period_bytes_min, hw->period_bytes_max); | |
8b90ca08 GL |
1967 | if (err < 0) |
1968 | return err; | |
1da177e4 LT |
1969 | |
1970 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, | |
1971 | hw->periods_min, hw->periods_max); | |
7eaa943c TI |
1972 | if (err < 0) |
1973 | return err; | |
1da177e4 LT |
1974 | |
1975 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1976 | hw->period_bytes_min, hw->buffer_bytes_max); | |
7eaa943c TI |
1977 | if (err < 0) |
1978 | return err; | |
1da177e4 LT |
1979 | |
1980 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1981 | snd_pcm_hw_rule_buffer_bytes_max, substream, | |
1982 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); | |
1983 | if (err < 0) | |
1984 | return err; | |
1985 | ||
1986 | /* FIXME: remove */ | |
1987 | if (runtime->dma_bytes) { | |
1988 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); | |
7eaa943c TI |
1989 | if (err < 0) |
1990 | return -EINVAL; | |
1da177e4 LT |
1991 | } |
1992 | ||
1993 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { | |
1994 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1995 | snd_pcm_hw_rule_rate, hw, | |
1996 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
1997 | if (err < 0) | |
1998 | return err; | |
1999 | } | |
2000 | ||
2001 | /* FIXME: this belong to lowlevel */ | |
1da177e4 LT |
2002 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); |
2003 | ||
2004 | return 0; | |
2005 | } | |
2006 | ||
3bf75f9b | 2007 | static void pcm_release_private(struct snd_pcm_substream *substream) |
1da177e4 | 2008 | { |
1da177e4 | 2009 | snd_pcm_unlink(substream); |
3bf75f9b TI |
2010 | } |
2011 | ||
2012 | void snd_pcm_release_substream(struct snd_pcm_substream *substream) | |
2013 | { | |
0df63e44 TI |
2014 | substream->ref_count--; |
2015 | if (substream->ref_count > 0) | |
2016 | return; | |
2017 | ||
3bf75f9b | 2018 | snd_pcm_drop(substream); |
3bf75f9b | 2019 | if (substream->hw_opened) { |
1da177e4 LT |
2020 | if (substream->ops->hw_free != NULL) |
2021 | substream->ops->hw_free(substream); | |
2022 | substream->ops->close(substream); | |
3bf75f9b | 2023 | substream->hw_opened = 0; |
1da177e4 | 2024 | } |
1576274d TI |
2025 | if (substream->pcm_release) { |
2026 | substream->pcm_release(substream); | |
2027 | substream->pcm_release = NULL; | |
2028 | } | |
3bf75f9b TI |
2029 | snd_pcm_detach_substream(substream); |
2030 | } | |
2031 | ||
e88e8ae6 TI |
2032 | EXPORT_SYMBOL(snd_pcm_release_substream); |
2033 | ||
3bf75f9b TI |
2034 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, |
2035 | struct file *file, | |
2036 | struct snd_pcm_substream **rsubstream) | |
2037 | { | |
2038 | struct snd_pcm_substream *substream; | |
2039 | int err; | |
2040 | ||
2041 | err = snd_pcm_attach_substream(pcm, stream, file, &substream); | |
2042 | if (err < 0) | |
2043 | return err; | |
0df63e44 TI |
2044 | if (substream->ref_count > 1) { |
2045 | *rsubstream = substream; | |
2046 | return 0; | |
2047 | } | |
2048 | ||
3bf75f9b TI |
2049 | err = snd_pcm_hw_constraints_init(substream); |
2050 | if (err < 0) { | |
2051 | snd_printd("snd_pcm_hw_constraints_init failed\n"); | |
2052 | goto error; | |
2053 | } | |
2054 | ||
2055 | if ((err = substream->ops->open(substream)) < 0) | |
2056 | goto error; | |
2057 | ||
2058 | substream->hw_opened = 1; | |
2059 | ||
2060 | err = snd_pcm_hw_constraints_complete(substream); | |
2061 | if (err < 0) { | |
2062 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); | |
2063 | goto error; | |
2064 | } | |
2065 | ||
2066 | *rsubstream = substream; | |
1da177e4 | 2067 | return 0; |
3bf75f9b TI |
2068 | |
2069 | error: | |
2070 | snd_pcm_release_substream(substream); | |
2071 | return err; | |
1da177e4 LT |
2072 | } |
2073 | ||
e88e8ae6 TI |
2074 | EXPORT_SYMBOL(snd_pcm_open_substream); |
2075 | ||
1da177e4 | 2076 | static int snd_pcm_open_file(struct file *file, |
877211f5 | 2077 | struct snd_pcm *pcm, |
1da177e4 | 2078 | int stream, |
877211f5 | 2079 | struct snd_pcm_file **rpcm_file) |
1da177e4 | 2080 | { |
877211f5 TI |
2081 | struct snd_pcm_file *pcm_file; |
2082 | struct snd_pcm_substream *substream; | |
2083 | struct snd_pcm_str *str; | |
3bf75f9b | 2084 | int err; |
1da177e4 | 2085 | |
7eaa943c TI |
2086 | if (rpcm_file) |
2087 | *rpcm_file = NULL; | |
1da177e4 | 2088 | |
3bf75f9b TI |
2089 | err = snd_pcm_open_substream(pcm, stream, file, &substream); |
2090 | if (err < 0) | |
2091 | return err; | |
2092 | ||
548a648b TI |
2093 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
2094 | if (pcm_file == NULL) { | |
2095 | snd_pcm_release_substream(substream); | |
2096 | return -ENOMEM; | |
2097 | } | |
2098 | pcm_file->substream = substream; | |
2099 | if (substream->ref_count == 1) { | |
0df63e44 TI |
2100 | str = substream->pstr; |
2101 | substream->file = pcm_file; | |
2102 | substream->pcm_release = pcm_release_private; | |
1da177e4 | 2103 | } |
1da177e4 | 2104 | file->private_data = pcm_file; |
7eaa943c TI |
2105 | if (rpcm_file) |
2106 | *rpcm_file = pcm_file; | |
1da177e4 LT |
2107 | return 0; |
2108 | } | |
2109 | ||
f87135f5 CL |
2110 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
2111 | { | |
2112 | struct snd_pcm *pcm; | |
2113 | ||
2114 | pcm = snd_lookup_minor_data(iminor(inode), | |
2115 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); | |
2116 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); | |
2117 | } | |
2118 | ||
2119 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) | |
1da177e4 | 2120 | { |
877211f5 | 2121 | struct snd_pcm *pcm; |
f87135f5 CL |
2122 | |
2123 | pcm = snd_lookup_minor_data(iminor(inode), | |
2124 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); | |
2125 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); | |
2126 | } | |
2127 | ||
2128 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) | |
2129 | { | |
2130 | int err; | |
877211f5 | 2131 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2132 | wait_queue_t wait; |
2133 | ||
1da177e4 LT |
2134 | if (pcm == NULL) { |
2135 | err = -ENODEV; | |
2136 | goto __error1; | |
2137 | } | |
2138 | err = snd_card_file_add(pcm->card, file); | |
2139 | if (err < 0) | |
2140 | goto __error1; | |
2141 | if (!try_module_get(pcm->card->module)) { | |
2142 | err = -EFAULT; | |
2143 | goto __error2; | |
2144 | } | |
2145 | init_waitqueue_entry(&wait, current); | |
2146 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2147 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2148 | while (1) { |
f87135f5 | 2149 | err = snd_pcm_open_file(file, pcm, stream, &pcm_file); |
1da177e4 LT |
2150 | if (err >= 0) |
2151 | break; | |
2152 | if (err == -EAGAIN) { | |
2153 | if (file->f_flags & O_NONBLOCK) { | |
2154 | err = -EBUSY; | |
2155 | break; | |
2156 | } | |
2157 | } else | |
2158 | break; | |
2159 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2160 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2161 | schedule(); |
1a60d4c5 | 2162 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2163 | if (signal_pending(current)) { |
2164 | err = -ERESTARTSYS; | |
2165 | break; | |
2166 | } | |
2167 | } | |
2168 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2169 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2170 | if (err < 0) |
2171 | goto __error; | |
2172 | return err; | |
2173 | ||
2174 | __error: | |
2175 | module_put(pcm->card->module); | |
2176 | __error2: | |
2177 | snd_card_file_remove(pcm->card, file); | |
2178 | __error1: | |
2179 | return err; | |
2180 | } | |
2181 | ||
2182 | static int snd_pcm_release(struct inode *inode, struct file *file) | |
2183 | { | |
877211f5 TI |
2184 | struct snd_pcm *pcm; |
2185 | struct snd_pcm_substream *substream; | |
2186 | struct snd_pcm_file *pcm_file; | |
1da177e4 LT |
2187 | |
2188 | pcm_file = file->private_data; | |
2189 | substream = pcm_file->substream; | |
7eaa943c TI |
2190 | if (snd_BUG_ON(!substream)) |
2191 | return -ENXIO; | |
1da177e4 | 2192 | pcm = substream->pcm; |
1a60d4c5 | 2193 | mutex_lock(&pcm->open_mutex); |
3bf75f9b | 2194 | snd_pcm_release_substream(substream); |
548a648b | 2195 | kfree(pcm_file); |
1a60d4c5 | 2196 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2197 | wake_up(&pcm->open_wait); |
2198 | module_put(pcm->card->module); | |
2199 | snd_card_file_remove(pcm->card, file); | |
2200 | return 0; | |
2201 | } | |
2202 | ||
877211f5 TI |
2203 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
2204 | snd_pcm_uframes_t frames) | |
1da177e4 | 2205 | { |
877211f5 | 2206 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2207 | snd_pcm_sframes_t appl_ptr; |
2208 | snd_pcm_sframes_t ret; | |
2209 | snd_pcm_sframes_t hw_avail; | |
2210 | ||
2211 | if (frames == 0) | |
2212 | return 0; | |
2213 | ||
2214 | snd_pcm_stream_lock_irq(substream); | |
2215 | switch (runtime->status->state) { | |
2216 | case SNDRV_PCM_STATE_PREPARED: | |
2217 | break; | |
2218 | case SNDRV_PCM_STATE_DRAINING: | |
2219 | case SNDRV_PCM_STATE_RUNNING: | |
2220 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2221 | break; | |
2222 | /* Fall through */ | |
2223 | case SNDRV_PCM_STATE_XRUN: | |
2224 | ret = -EPIPE; | |
2225 | goto __end; | |
51840409 LR |
2226 | case SNDRV_PCM_STATE_SUSPENDED: |
2227 | ret = -ESTRPIPE; | |
2228 | goto __end; | |
1da177e4 LT |
2229 | default: |
2230 | ret = -EBADFD; | |
2231 | goto __end; | |
2232 | } | |
2233 | ||
2234 | hw_avail = snd_pcm_playback_hw_avail(runtime); | |
2235 | if (hw_avail <= 0) { | |
2236 | ret = 0; | |
2237 | goto __end; | |
2238 | } | |
2239 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2240 | frames = hw_avail; | |
1da177e4 LT |
2241 | appl_ptr = runtime->control->appl_ptr - frames; |
2242 | if (appl_ptr < 0) | |
2243 | appl_ptr += runtime->boundary; | |
2244 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2245 | ret = frames; |
2246 | __end: | |
2247 | snd_pcm_stream_unlock_irq(substream); | |
2248 | return ret; | |
2249 | } | |
2250 | ||
877211f5 TI |
2251 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
2252 | snd_pcm_uframes_t frames) | |
1da177e4 | 2253 | { |
877211f5 | 2254 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2255 | snd_pcm_sframes_t appl_ptr; |
2256 | snd_pcm_sframes_t ret; | |
2257 | snd_pcm_sframes_t hw_avail; | |
2258 | ||
2259 | if (frames == 0) | |
2260 | return 0; | |
2261 | ||
2262 | snd_pcm_stream_lock_irq(substream); | |
2263 | switch (runtime->status->state) { | |
2264 | case SNDRV_PCM_STATE_PREPARED: | |
2265 | case SNDRV_PCM_STATE_DRAINING: | |
2266 | break; | |
2267 | case SNDRV_PCM_STATE_RUNNING: | |
2268 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2269 | break; | |
2270 | /* Fall through */ | |
2271 | case SNDRV_PCM_STATE_XRUN: | |
2272 | ret = -EPIPE; | |
2273 | goto __end; | |
51840409 LR |
2274 | case SNDRV_PCM_STATE_SUSPENDED: |
2275 | ret = -ESTRPIPE; | |
2276 | goto __end; | |
1da177e4 LT |
2277 | default: |
2278 | ret = -EBADFD; | |
2279 | goto __end; | |
2280 | } | |
2281 | ||
2282 | hw_avail = snd_pcm_capture_hw_avail(runtime); | |
2283 | if (hw_avail <= 0) { | |
2284 | ret = 0; | |
2285 | goto __end; | |
2286 | } | |
2287 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2288 | frames = hw_avail; | |
1da177e4 LT |
2289 | appl_ptr = runtime->control->appl_ptr - frames; |
2290 | if (appl_ptr < 0) | |
2291 | appl_ptr += runtime->boundary; | |
2292 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2293 | ret = frames; |
2294 | __end: | |
2295 | snd_pcm_stream_unlock_irq(substream); | |
2296 | return ret; | |
2297 | } | |
2298 | ||
877211f5 TI |
2299 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
2300 | snd_pcm_uframes_t frames) | |
1da177e4 | 2301 | { |
877211f5 | 2302 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2303 | snd_pcm_sframes_t appl_ptr; |
2304 | snd_pcm_sframes_t ret; | |
2305 | snd_pcm_sframes_t avail; | |
2306 | ||
2307 | if (frames == 0) | |
2308 | return 0; | |
2309 | ||
2310 | snd_pcm_stream_lock_irq(substream); | |
2311 | switch (runtime->status->state) { | |
2312 | case SNDRV_PCM_STATE_PREPARED: | |
2313 | case SNDRV_PCM_STATE_PAUSED: | |
2314 | break; | |
2315 | case SNDRV_PCM_STATE_DRAINING: | |
2316 | case SNDRV_PCM_STATE_RUNNING: | |
2317 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2318 | break; | |
2319 | /* Fall through */ | |
2320 | case SNDRV_PCM_STATE_XRUN: | |
2321 | ret = -EPIPE; | |
2322 | goto __end; | |
51840409 LR |
2323 | case SNDRV_PCM_STATE_SUSPENDED: |
2324 | ret = -ESTRPIPE; | |
2325 | goto __end; | |
1da177e4 LT |
2326 | default: |
2327 | ret = -EBADFD; | |
2328 | goto __end; | |
2329 | } | |
2330 | ||
2331 | avail = snd_pcm_playback_avail(runtime); | |
2332 | if (avail <= 0) { | |
2333 | ret = 0; | |
2334 | goto __end; | |
2335 | } | |
2336 | if (frames > (snd_pcm_uframes_t)avail) | |
2337 | frames = avail; | |
1da177e4 LT |
2338 | appl_ptr = runtime->control->appl_ptr + frames; |
2339 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2340 | appl_ptr -= runtime->boundary; | |
2341 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2342 | ret = frames; |
2343 | __end: | |
2344 | snd_pcm_stream_unlock_irq(substream); | |
2345 | return ret; | |
2346 | } | |
2347 | ||
877211f5 TI |
2348 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
2349 | snd_pcm_uframes_t frames) | |
1da177e4 | 2350 | { |
877211f5 | 2351 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2352 | snd_pcm_sframes_t appl_ptr; |
2353 | snd_pcm_sframes_t ret; | |
2354 | snd_pcm_sframes_t avail; | |
2355 | ||
2356 | if (frames == 0) | |
2357 | return 0; | |
2358 | ||
2359 | snd_pcm_stream_lock_irq(substream); | |
2360 | switch (runtime->status->state) { | |
2361 | case SNDRV_PCM_STATE_PREPARED: | |
2362 | case SNDRV_PCM_STATE_DRAINING: | |
2363 | case SNDRV_PCM_STATE_PAUSED: | |
2364 | break; | |
2365 | case SNDRV_PCM_STATE_RUNNING: | |
2366 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2367 | break; | |
2368 | /* Fall through */ | |
2369 | case SNDRV_PCM_STATE_XRUN: | |
2370 | ret = -EPIPE; | |
2371 | goto __end; | |
51840409 LR |
2372 | case SNDRV_PCM_STATE_SUSPENDED: |
2373 | ret = -ESTRPIPE; | |
2374 | goto __end; | |
1da177e4 LT |
2375 | default: |
2376 | ret = -EBADFD; | |
2377 | goto __end; | |
2378 | } | |
2379 | ||
2380 | avail = snd_pcm_capture_avail(runtime); | |
2381 | if (avail <= 0) { | |
2382 | ret = 0; | |
2383 | goto __end; | |
2384 | } | |
2385 | if (frames > (snd_pcm_uframes_t)avail) | |
2386 | frames = avail; | |
1da177e4 LT |
2387 | appl_ptr = runtime->control->appl_ptr + frames; |
2388 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2389 | appl_ptr -= runtime->boundary; | |
2390 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2391 | ret = frames; |
2392 | __end: | |
2393 | snd_pcm_stream_unlock_irq(substream); | |
2394 | return ret; | |
2395 | } | |
2396 | ||
877211f5 | 2397 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
1da177e4 | 2398 | { |
877211f5 | 2399 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2400 | int err; |
2401 | ||
2402 | snd_pcm_stream_lock_irq(substream); | |
2403 | switch (runtime->status->state) { | |
2404 | case SNDRV_PCM_STATE_DRAINING: | |
2405 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2406 | goto __badfd; | |
2407 | case SNDRV_PCM_STATE_RUNNING: | |
2408 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2409 | break; | |
2410 | /* Fall through */ | |
2411 | case SNDRV_PCM_STATE_PREPARED: | |
2412 | case SNDRV_PCM_STATE_SUSPENDED: | |
2413 | err = 0; | |
2414 | break; | |
2415 | case SNDRV_PCM_STATE_XRUN: | |
2416 | err = -EPIPE; | |
2417 | break; | |
2418 | default: | |
2419 | __badfd: | |
2420 | err = -EBADFD; | |
2421 | break; | |
2422 | } | |
2423 | snd_pcm_stream_unlock_irq(substream); | |
2424 | return err; | |
2425 | } | |
2426 | ||
877211f5 TI |
2427 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
2428 | snd_pcm_sframes_t __user *res) | |
1da177e4 | 2429 | { |
877211f5 | 2430 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2431 | int err; |
2432 | snd_pcm_sframes_t n = 0; | |
2433 | ||
2434 | snd_pcm_stream_lock_irq(substream); | |
2435 | switch (runtime->status->state) { | |
2436 | case SNDRV_PCM_STATE_DRAINING: | |
2437 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2438 | goto __badfd; | |
2439 | case SNDRV_PCM_STATE_RUNNING: | |
2440 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2441 | break; | |
2442 | /* Fall through */ | |
2443 | case SNDRV_PCM_STATE_PREPARED: | |
2444 | case SNDRV_PCM_STATE_SUSPENDED: | |
2445 | err = 0; | |
2446 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2447 | n = snd_pcm_playback_hw_avail(runtime); | |
2448 | else | |
2449 | n = snd_pcm_capture_avail(runtime); | |
4bbe1ddf | 2450 | n += runtime->delay; |
1da177e4 LT |
2451 | break; |
2452 | case SNDRV_PCM_STATE_XRUN: | |
2453 | err = -EPIPE; | |
2454 | break; | |
2455 | default: | |
2456 | __badfd: | |
2457 | err = -EBADFD; | |
2458 | break; | |
2459 | } | |
2460 | snd_pcm_stream_unlock_irq(substream); | |
2461 | if (!err) | |
2462 | if (put_user(n, res)) | |
2463 | err = -EFAULT; | |
2464 | return err; | |
2465 | } | |
2466 | ||
877211f5 TI |
2467 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
2468 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
1da177e4 | 2469 | { |
877211f5 TI |
2470 | struct snd_pcm_runtime *runtime = substream->runtime; |
2471 | struct snd_pcm_sync_ptr sync_ptr; | |
2472 | volatile struct snd_pcm_mmap_status *status; | |
2473 | volatile struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
2474 | int err; |
2475 | ||
2476 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
2477 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
2478 | return -EFAULT; | |
877211f5 | 2479 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
2480 | return -EFAULT; |
2481 | status = runtime->status; | |
2482 | control = runtime->control; | |
2483 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
2484 | err = snd_pcm_hwsync(substream); | |
2485 | if (err < 0) | |
2486 | return err; | |
2487 | } | |
2488 | snd_pcm_stream_lock_irq(substream); | |
2489 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) | |
2490 | control->appl_ptr = sync_ptr.c.control.appl_ptr; | |
2491 | else | |
2492 | sync_ptr.c.control.appl_ptr = control->appl_ptr; | |
2493 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
2494 | control->avail_min = sync_ptr.c.control.avail_min; | |
2495 | else | |
2496 | sync_ptr.c.control.avail_min = control->avail_min; | |
2497 | sync_ptr.s.status.state = status->state; | |
2498 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
2499 | sync_ptr.s.status.tstamp = status->tstamp; | |
2500 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
2501 | snd_pcm_stream_unlock_irq(substream); | |
2502 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) | |
2503 | return -EFAULT; | |
2504 | return 0; | |
2505 | } | |
b751eef1 JK |
2506 | |
2507 | static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg) | |
2508 | { | |
2509 | struct snd_pcm_runtime *runtime = substream->runtime; | |
2510 | int arg; | |
2511 | ||
2512 | if (get_user(arg, _arg)) | |
2513 | return -EFAULT; | |
2514 | if (arg < 0 || arg > SNDRV_PCM_TSTAMP_TYPE_LAST) | |
2515 | return -EINVAL; | |
2516 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY; | |
2517 | if (arg == SNDRV_PCM_TSTAMP_TYPE_MONOTONIC) | |
2518 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC; | |
2519 | return 0; | |
2520 | } | |
1da177e4 | 2521 | |
0df63e44 TI |
2522 | static int snd_pcm_common_ioctl1(struct file *file, |
2523 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2524 | unsigned int cmd, void __user *arg) |
2525 | { | |
1da177e4 LT |
2526 | switch (cmd) { |
2527 | case SNDRV_PCM_IOCTL_PVERSION: | |
2528 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; | |
2529 | case SNDRV_PCM_IOCTL_INFO: | |
2530 | return snd_pcm_info_user(substream, arg); | |
28e9e473 JK |
2531 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
2532 | return 0; | |
b751eef1 JK |
2533 | case SNDRV_PCM_IOCTL_TTSTAMP: |
2534 | return snd_pcm_tstamp(substream, arg); | |
1da177e4 LT |
2535 | case SNDRV_PCM_IOCTL_HW_REFINE: |
2536 | return snd_pcm_hw_refine_user(substream, arg); | |
2537 | case SNDRV_PCM_IOCTL_HW_PARAMS: | |
2538 | return snd_pcm_hw_params_user(substream, arg); | |
2539 | case SNDRV_PCM_IOCTL_HW_FREE: | |
2540 | return snd_pcm_hw_free(substream); | |
2541 | case SNDRV_PCM_IOCTL_SW_PARAMS: | |
2542 | return snd_pcm_sw_params_user(substream, arg); | |
2543 | case SNDRV_PCM_IOCTL_STATUS: | |
2544 | return snd_pcm_status_user(substream, arg); | |
2545 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: | |
2546 | return snd_pcm_channel_info_user(substream, arg); | |
2547 | case SNDRV_PCM_IOCTL_PREPARE: | |
0df63e44 | 2548 | return snd_pcm_prepare(substream, file); |
1da177e4 LT |
2549 | case SNDRV_PCM_IOCTL_RESET: |
2550 | return snd_pcm_reset(substream); | |
2551 | case SNDRV_PCM_IOCTL_START: | |
2552 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); | |
2553 | case SNDRV_PCM_IOCTL_LINK: | |
2554 | return snd_pcm_link(substream, (int)(unsigned long) arg); | |
2555 | case SNDRV_PCM_IOCTL_UNLINK: | |
2556 | return snd_pcm_unlink(substream); | |
2557 | case SNDRV_PCM_IOCTL_RESUME: | |
2558 | return snd_pcm_resume(substream); | |
2559 | case SNDRV_PCM_IOCTL_XRUN: | |
2560 | return snd_pcm_xrun(substream); | |
2561 | case SNDRV_PCM_IOCTL_HWSYNC: | |
2562 | return snd_pcm_hwsync(substream); | |
2563 | case SNDRV_PCM_IOCTL_DELAY: | |
2564 | return snd_pcm_delay(substream, arg); | |
2565 | case SNDRV_PCM_IOCTL_SYNC_PTR: | |
2566 | return snd_pcm_sync_ptr(substream, arg); | |
59d48582 | 2567 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
2568 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
2569 | return snd_pcm_hw_refine_old_user(substream, arg); | |
2570 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: | |
2571 | return snd_pcm_hw_params_old_user(substream, arg); | |
59d48582 | 2572 | #endif |
1da177e4 | 2573 | case SNDRV_PCM_IOCTL_DRAIN: |
4cdc115f | 2574 | return snd_pcm_drain(substream, file); |
1da177e4 LT |
2575 | case SNDRV_PCM_IOCTL_DROP: |
2576 | return snd_pcm_drop(substream); | |
e661d0dd TI |
2577 | case SNDRV_PCM_IOCTL_PAUSE: |
2578 | { | |
2579 | int res; | |
2580 | snd_pcm_stream_lock_irq(substream); | |
2581 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); | |
2582 | snd_pcm_stream_unlock_irq(substream); | |
2583 | return res; | |
2584 | } | |
1da177e4 LT |
2585 | } |
2586 | snd_printd("unknown ioctl = 0x%x\n", cmd); | |
2587 | return -ENOTTY; | |
2588 | } | |
2589 | ||
0df63e44 TI |
2590 | static int snd_pcm_playback_ioctl1(struct file *file, |
2591 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2592 | unsigned int cmd, void __user *arg) |
2593 | { | |
7eaa943c TI |
2594 | if (snd_BUG_ON(!substream)) |
2595 | return -ENXIO; | |
2596 | if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
2597 | return -EINVAL; | |
1da177e4 LT |
2598 | switch (cmd) { |
2599 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: | |
2600 | { | |
877211f5 TI |
2601 | struct snd_xferi xferi; |
2602 | struct snd_xferi __user *_xferi = arg; | |
2603 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2604 | snd_pcm_sframes_t result; |
2605 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2606 | return -EBADFD; | |
2607 | if (put_user(0, &_xferi->result)) | |
2608 | return -EFAULT; | |
2609 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2610 | return -EFAULT; | |
2611 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); | |
2612 | __put_user(result, &_xferi->result); | |
2613 | return result < 0 ? result : 0; | |
2614 | } | |
2615 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: | |
2616 | { | |
877211f5 TI |
2617 | struct snd_xfern xfern; |
2618 | struct snd_xfern __user *_xfern = arg; | |
2619 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2620 | void __user **bufs; |
2621 | snd_pcm_sframes_t result; | |
2622 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2623 | return -EBADFD; | |
2624 | if (runtime->channels > 128) | |
2625 | return -EINVAL; | |
2626 | if (put_user(0, &_xfern->result)) | |
2627 | return -EFAULT; | |
2628 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2629 | return -EFAULT; | |
ef44a1ec LZ |
2630 | |
2631 | bufs = memdup_user(xfern.bufs, | |
2632 | sizeof(void *) * runtime->channels); | |
2633 | if (IS_ERR(bufs)) | |
2634 | return PTR_ERR(bufs); | |
1da177e4 LT |
2635 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); |
2636 | kfree(bufs); | |
2637 | __put_user(result, &_xfern->result); | |
2638 | return result < 0 ? result : 0; | |
2639 | } | |
2640 | case SNDRV_PCM_IOCTL_REWIND: | |
2641 | { | |
2642 | snd_pcm_uframes_t frames; | |
2643 | snd_pcm_uframes_t __user *_frames = arg; | |
2644 | snd_pcm_sframes_t result; | |
2645 | if (get_user(frames, _frames)) | |
2646 | return -EFAULT; | |
2647 | if (put_user(0, _frames)) | |
2648 | return -EFAULT; | |
2649 | result = snd_pcm_playback_rewind(substream, frames); | |
2650 | __put_user(result, _frames); | |
2651 | return result < 0 ? result : 0; | |
2652 | } | |
2653 | case SNDRV_PCM_IOCTL_FORWARD: | |
2654 | { | |
2655 | snd_pcm_uframes_t frames; | |
2656 | snd_pcm_uframes_t __user *_frames = arg; | |
2657 | snd_pcm_sframes_t result; | |
2658 | if (get_user(frames, _frames)) | |
2659 | return -EFAULT; | |
2660 | if (put_user(0, _frames)) | |
2661 | return -EFAULT; | |
2662 | result = snd_pcm_playback_forward(substream, frames); | |
2663 | __put_user(result, _frames); | |
2664 | return result < 0 ? result : 0; | |
2665 | } | |
1da177e4 | 2666 | } |
0df63e44 | 2667 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2668 | } |
2669 | ||
0df63e44 TI |
2670 | static int snd_pcm_capture_ioctl1(struct file *file, |
2671 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2672 | unsigned int cmd, void __user *arg) |
2673 | { | |
7eaa943c TI |
2674 | if (snd_BUG_ON(!substream)) |
2675 | return -ENXIO; | |
2676 | if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_CAPTURE)) | |
2677 | return -EINVAL; | |
1da177e4 LT |
2678 | switch (cmd) { |
2679 | case SNDRV_PCM_IOCTL_READI_FRAMES: | |
2680 | { | |
877211f5 TI |
2681 | struct snd_xferi xferi; |
2682 | struct snd_xferi __user *_xferi = arg; | |
2683 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2684 | snd_pcm_sframes_t result; |
2685 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2686 | return -EBADFD; | |
2687 | if (put_user(0, &_xferi->result)) | |
2688 | return -EFAULT; | |
2689 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2690 | return -EFAULT; | |
2691 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); | |
2692 | __put_user(result, &_xferi->result); | |
2693 | return result < 0 ? result : 0; | |
2694 | } | |
2695 | case SNDRV_PCM_IOCTL_READN_FRAMES: | |
2696 | { | |
877211f5 TI |
2697 | struct snd_xfern xfern; |
2698 | struct snd_xfern __user *_xfern = arg; | |
2699 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2700 | void *bufs; |
2701 | snd_pcm_sframes_t result; | |
2702 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2703 | return -EBADFD; | |
2704 | if (runtime->channels > 128) | |
2705 | return -EINVAL; | |
2706 | if (put_user(0, &_xfern->result)) | |
2707 | return -EFAULT; | |
2708 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2709 | return -EFAULT; | |
ef44a1ec LZ |
2710 | |
2711 | bufs = memdup_user(xfern.bufs, | |
2712 | sizeof(void *) * runtime->channels); | |
2713 | if (IS_ERR(bufs)) | |
2714 | return PTR_ERR(bufs); | |
1da177e4 LT |
2715 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); |
2716 | kfree(bufs); | |
2717 | __put_user(result, &_xfern->result); | |
2718 | return result < 0 ? result : 0; | |
2719 | } | |
2720 | case SNDRV_PCM_IOCTL_REWIND: | |
2721 | { | |
2722 | snd_pcm_uframes_t frames; | |
2723 | snd_pcm_uframes_t __user *_frames = arg; | |
2724 | snd_pcm_sframes_t result; | |
2725 | if (get_user(frames, _frames)) | |
2726 | return -EFAULT; | |
2727 | if (put_user(0, _frames)) | |
2728 | return -EFAULT; | |
2729 | result = snd_pcm_capture_rewind(substream, frames); | |
2730 | __put_user(result, _frames); | |
2731 | return result < 0 ? result : 0; | |
2732 | } | |
2733 | case SNDRV_PCM_IOCTL_FORWARD: | |
2734 | { | |
2735 | snd_pcm_uframes_t frames; | |
2736 | snd_pcm_uframes_t __user *_frames = arg; | |
2737 | snd_pcm_sframes_t result; | |
2738 | if (get_user(frames, _frames)) | |
2739 | return -EFAULT; | |
2740 | if (put_user(0, _frames)) | |
2741 | return -EFAULT; | |
2742 | result = snd_pcm_capture_forward(substream, frames); | |
2743 | __put_user(result, _frames); | |
2744 | return result < 0 ? result : 0; | |
2745 | } | |
2746 | } | |
0df63e44 | 2747 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2748 | } |
2749 | ||
877211f5 TI |
2750 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
2751 | unsigned long arg) | |
1da177e4 | 2752 | { |
877211f5 | 2753 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2754 | |
2755 | pcm_file = file->private_data; | |
2756 | ||
2757 | if (((cmd >> 8) & 0xff) != 'A') | |
2758 | return -ENOTTY; | |
2759 | ||
0df63e44 TI |
2760 | return snd_pcm_playback_ioctl1(file, pcm_file->substream, cmd, |
2761 | (void __user *)arg); | |
1da177e4 LT |
2762 | } |
2763 | ||
877211f5 TI |
2764 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
2765 | unsigned long arg) | |
1da177e4 | 2766 | { |
877211f5 | 2767 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2768 | |
2769 | pcm_file = file->private_data; | |
2770 | ||
2771 | if (((cmd >> 8) & 0xff) != 'A') | |
2772 | return -ENOTTY; | |
2773 | ||
0df63e44 TI |
2774 | return snd_pcm_capture_ioctl1(file, pcm_file->substream, cmd, |
2775 | (void __user *)arg); | |
1da177e4 LT |
2776 | } |
2777 | ||
bf1bbb5a TI |
2778 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
2779 | unsigned int cmd, void *arg) | |
1da177e4 LT |
2780 | { |
2781 | mm_segment_t fs; | |
2782 | int result; | |
2783 | ||
2784 | fs = snd_enter_user(); | |
1da177e4 LT |
2785 | switch (substream->stream) { |
2786 | case SNDRV_PCM_STREAM_PLAYBACK: | |
0df63e44 TI |
2787 | result = snd_pcm_playback_ioctl1(NULL, substream, cmd, |
2788 | (void __user *)arg); | |
bf1bbb5a | 2789 | break; |
1da177e4 | 2790 | case SNDRV_PCM_STREAM_CAPTURE: |
0df63e44 TI |
2791 | result = snd_pcm_capture_ioctl1(NULL, substream, cmd, |
2792 | (void __user *)arg); | |
bf1bbb5a | 2793 | break; |
1da177e4 | 2794 | default: |
bf1bbb5a TI |
2795 | result = -EINVAL; |
2796 | break; | |
1da177e4 | 2797 | } |
bf1bbb5a TI |
2798 | snd_leave_user(fs); |
2799 | return result; | |
1da177e4 LT |
2800 | } |
2801 | ||
e88e8ae6 TI |
2802 | EXPORT_SYMBOL(snd_pcm_kernel_ioctl); |
2803 | ||
877211f5 TI |
2804 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
2805 | loff_t * offset) | |
1da177e4 | 2806 | { |
877211f5 TI |
2807 | struct snd_pcm_file *pcm_file; |
2808 | struct snd_pcm_substream *substream; | |
2809 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2810 | snd_pcm_sframes_t result; |
2811 | ||
2812 | pcm_file = file->private_data; | |
2813 | substream = pcm_file->substream; | |
7eaa943c TI |
2814 | if (PCM_RUNTIME_CHECK(substream)) |
2815 | return -ENXIO; | |
1da177e4 LT |
2816 | runtime = substream->runtime; |
2817 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2818 | return -EBADFD; | |
2819 | if (!frame_aligned(runtime, count)) | |
2820 | return -EINVAL; | |
2821 | count = bytes_to_frames(runtime, count); | |
2822 | result = snd_pcm_lib_read(substream, buf, count); | |
2823 | if (result > 0) | |
2824 | result = frames_to_bytes(runtime, result); | |
2825 | return result; | |
2826 | } | |
2827 | ||
877211f5 TI |
2828 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
2829 | size_t count, loff_t * offset) | |
1da177e4 | 2830 | { |
877211f5 TI |
2831 | struct snd_pcm_file *pcm_file; |
2832 | struct snd_pcm_substream *substream; | |
2833 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2834 | snd_pcm_sframes_t result; |
2835 | ||
2836 | pcm_file = file->private_data; | |
2837 | substream = pcm_file->substream; | |
7eaa943c TI |
2838 | if (PCM_RUNTIME_CHECK(substream)) |
2839 | return -ENXIO; | |
1da177e4 | 2840 | runtime = substream->runtime; |
7eaa943c TI |
2841 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
2842 | return -EBADFD; | |
2843 | if (!frame_aligned(runtime, count)) | |
2844 | return -EINVAL; | |
1da177e4 LT |
2845 | count = bytes_to_frames(runtime, count); |
2846 | result = snd_pcm_lib_write(substream, buf, count); | |
2847 | if (result > 0) | |
2848 | result = frames_to_bytes(runtime, result); | |
1da177e4 LT |
2849 | return result; |
2850 | } | |
2851 | ||
ee0b3e67 BP |
2852 | static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov, |
2853 | unsigned long nr_segs, loff_t pos) | |
1da177e4 LT |
2854 | |
2855 | { | |
877211f5 TI |
2856 | struct snd_pcm_file *pcm_file; |
2857 | struct snd_pcm_substream *substream; | |
2858 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2859 | snd_pcm_sframes_t result; |
2860 | unsigned long i; | |
2861 | void __user **bufs; | |
2862 | snd_pcm_uframes_t frames; | |
2863 | ||
ee0b3e67 | 2864 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 | 2865 | substream = pcm_file->substream; |
7eaa943c TI |
2866 | if (PCM_RUNTIME_CHECK(substream)) |
2867 | return -ENXIO; | |
1da177e4 LT |
2868 | runtime = substream->runtime; |
2869 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2870 | return -EBADFD; | |
ee0b3e67 | 2871 | if (nr_segs > 1024 || nr_segs != runtime->channels) |
1da177e4 | 2872 | return -EINVAL; |
ee0b3e67 | 2873 | if (!frame_aligned(runtime, iov->iov_len)) |
1da177e4 | 2874 | return -EINVAL; |
ee0b3e67 BP |
2875 | frames = bytes_to_samples(runtime, iov->iov_len); |
2876 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2877 | if (bufs == NULL) |
2878 | return -ENOMEM; | |
ee0b3e67 BP |
2879 | for (i = 0; i < nr_segs; ++i) |
2880 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2881 | result = snd_pcm_lib_readv(substream, bufs, frames); |
2882 | if (result > 0) | |
2883 | result = frames_to_bytes(runtime, result); | |
2884 | kfree(bufs); | |
2885 | return result; | |
2886 | } | |
2887 | ||
ee0b3e67 BP |
2888 | static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov, |
2889 | unsigned long nr_segs, loff_t pos) | |
1da177e4 | 2890 | { |
877211f5 TI |
2891 | struct snd_pcm_file *pcm_file; |
2892 | struct snd_pcm_substream *substream; | |
2893 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2894 | snd_pcm_sframes_t result; |
2895 | unsigned long i; | |
2896 | void __user **bufs; | |
2897 | snd_pcm_uframes_t frames; | |
2898 | ||
ee0b3e67 | 2899 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 | 2900 | substream = pcm_file->substream; |
7eaa943c TI |
2901 | if (PCM_RUNTIME_CHECK(substream)) |
2902 | return -ENXIO; | |
1da177e4 | 2903 | runtime = substream->runtime; |
7eaa943c TI |
2904 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
2905 | return -EBADFD; | |
ee0b3e67 | 2906 | if (nr_segs > 128 || nr_segs != runtime->channels || |
7eaa943c TI |
2907 | !frame_aligned(runtime, iov->iov_len)) |
2908 | return -EINVAL; | |
ee0b3e67 BP |
2909 | frames = bytes_to_samples(runtime, iov->iov_len); |
2910 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2911 | if (bufs == NULL) |
2912 | return -ENOMEM; | |
ee0b3e67 BP |
2913 | for (i = 0; i < nr_segs; ++i) |
2914 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2915 | result = snd_pcm_lib_writev(substream, bufs, frames); |
2916 | if (result > 0) | |
2917 | result = frames_to_bytes(runtime, result); | |
2918 | kfree(bufs); | |
1da177e4 LT |
2919 | return result; |
2920 | } | |
2921 | ||
2922 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) | |
2923 | { | |
877211f5 TI |
2924 | struct snd_pcm_file *pcm_file; |
2925 | struct snd_pcm_substream *substream; | |
2926 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2927 | unsigned int mask; |
2928 | snd_pcm_uframes_t avail; | |
2929 | ||
2930 | pcm_file = file->private_data; | |
2931 | ||
2932 | substream = pcm_file->substream; | |
7eaa943c TI |
2933 | if (PCM_RUNTIME_CHECK(substream)) |
2934 | return -ENXIO; | |
1da177e4 LT |
2935 | runtime = substream->runtime; |
2936 | ||
2937 | poll_wait(file, &runtime->sleep, wait); | |
2938 | ||
2939 | snd_pcm_stream_lock_irq(substream); | |
2940 | avail = snd_pcm_playback_avail(runtime); | |
2941 | switch (runtime->status->state) { | |
2942 | case SNDRV_PCM_STATE_RUNNING: | |
2943 | case SNDRV_PCM_STATE_PREPARED: | |
2944 | case SNDRV_PCM_STATE_PAUSED: | |
2945 | if (avail >= runtime->control->avail_min) { | |
2946 | mask = POLLOUT | POLLWRNORM; | |
2947 | break; | |
2948 | } | |
2949 | /* Fall through */ | |
2950 | case SNDRV_PCM_STATE_DRAINING: | |
2951 | mask = 0; | |
2952 | break; | |
2953 | default: | |
2954 | mask = POLLOUT | POLLWRNORM | POLLERR; | |
2955 | break; | |
2956 | } | |
2957 | snd_pcm_stream_unlock_irq(substream); | |
2958 | return mask; | |
2959 | } | |
2960 | ||
2961 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) | |
2962 | { | |
877211f5 TI |
2963 | struct snd_pcm_file *pcm_file; |
2964 | struct snd_pcm_substream *substream; | |
2965 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2966 | unsigned int mask; |
2967 | snd_pcm_uframes_t avail; | |
2968 | ||
2969 | pcm_file = file->private_data; | |
2970 | ||
2971 | substream = pcm_file->substream; | |
7eaa943c TI |
2972 | if (PCM_RUNTIME_CHECK(substream)) |
2973 | return -ENXIO; | |
1da177e4 LT |
2974 | runtime = substream->runtime; |
2975 | ||
2976 | poll_wait(file, &runtime->sleep, wait); | |
2977 | ||
2978 | snd_pcm_stream_lock_irq(substream); | |
2979 | avail = snd_pcm_capture_avail(runtime); | |
2980 | switch (runtime->status->state) { | |
2981 | case SNDRV_PCM_STATE_RUNNING: | |
2982 | case SNDRV_PCM_STATE_PREPARED: | |
2983 | case SNDRV_PCM_STATE_PAUSED: | |
2984 | if (avail >= runtime->control->avail_min) { | |
2985 | mask = POLLIN | POLLRDNORM; | |
2986 | break; | |
2987 | } | |
2988 | mask = 0; | |
2989 | break; | |
2990 | case SNDRV_PCM_STATE_DRAINING: | |
2991 | if (avail > 0) { | |
2992 | mask = POLLIN | POLLRDNORM; | |
2993 | break; | |
2994 | } | |
2995 | /* Fall through */ | |
2996 | default: | |
2997 | mask = POLLIN | POLLRDNORM | POLLERR; | |
2998 | break; | |
2999 | } | |
3000 | snd_pcm_stream_unlock_irq(substream); | |
3001 | return mask; | |
3002 | } | |
3003 | ||
3004 | /* | |
3005 | * mmap support | |
3006 | */ | |
3007 | ||
3008 | /* | |
3009 | * Only on coherent architectures, we can mmap the status and the control records | |
3010 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... | |
3011 | */ | |
3012 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
3013 | /* | |
3014 | * mmap status record | |
3015 | */ | |
3ad5afcd NP |
3016 | static int snd_pcm_mmap_status_fault(struct vm_area_struct *area, |
3017 | struct vm_fault *vmf) | |
1da177e4 | 3018 | { |
877211f5 TI |
3019 | struct snd_pcm_substream *substream = area->vm_private_data; |
3020 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3021 | |
3022 | if (substream == NULL) | |
3ad5afcd | 3023 | return VM_FAULT_SIGBUS; |
1da177e4 | 3024 | runtime = substream->runtime; |
3ad5afcd NP |
3025 | vmf->page = virt_to_page(runtime->status); |
3026 | get_page(vmf->page); | |
3027 | return 0; | |
1da177e4 LT |
3028 | } |
3029 | ||
f0f37e2f | 3030 | static const struct vm_operations_struct snd_pcm_vm_ops_status = |
1da177e4 | 3031 | { |
3ad5afcd | 3032 | .fault = snd_pcm_mmap_status_fault, |
1da177e4 LT |
3033 | }; |
3034 | ||
877211f5 | 3035 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3036 | struct vm_area_struct *area) |
3037 | { | |
877211f5 | 3038 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3039 | long size; |
3040 | if (!(area->vm_flags & VM_READ)) | |
3041 | return -EINVAL; | |
3042 | runtime = substream->runtime; | |
1da177e4 | 3043 | size = area->vm_end - area->vm_start; |
877211f5 | 3044 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
1da177e4 LT |
3045 | return -EINVAL; |
3046 | area->vm_ops = &snd_pcm_vm_ops_status; | |
3047 | area->vm_private_data = substream; | |
3048 | area->vm_flags |= VM_RESERVED; | |
3049 | return 0; | |
3050 | } | |
3051 | ||
3052 | /* | |
3053 | * mmap control record | |
3054 | */ | |
3ad5afcd NP |
3055 | static int snd_pcm_mmap_control_fault(struct vm_area_struct *area, |
3056 | struct vm_fault *vmf) | |
1da177e4 | 3057 | { |
877211f5 TI |
3058 | struct snd_pcm_substream *substream = area->vm_private_data; |
3059 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3060 | |
3061 | if (substream == NULL) | |
3ad5afcd | 3062 | return VM_FAULT_SIGBUS; |
1da177e4 | 3063 | runtime = substream->runtime; |
3ad5afcd NP |
3064 | vmf->page = virt_to_page(runtime->control); |
3065 | get_page(vmf->page); | |
3066 | return 0; | |
1da177e4 LT |
3067 | } |
3068 | ||
f0f37e2f | 3069 | static const struct vm_operations_struct snd_pcm_vm_ops_control = |
1da177e4 | 3070 | { |
3ad5afcd | 3071 | .fault = snd_pcm_mmap_control_fault, |
1da177e4 LT |
3072 | }; |
3073 | ||
877211f5 | 3074 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3075 | struct vm_area_struct *area) |
3076 | { | |
877211f5 | 3077 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3078 | long size; |
3079 | if (!(area->vm_flags & VM_READ)) | |
3080 | return -EINVAL; | |
3081 | runtime = substream->runtime; | |
1da177e4 | 3082 | size = area->vm_end - area->vm_start; |
877211f5 | 3083 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
3084 | return -EINVAL; |
3085 | area->vm_ops = &snd_pcm_vm_ops_control; | |
3086 | area->vm_private_data = substream; | |
3087 | area->vm_flags |= VM_RESERVED; | |
3088 | return 0; | |
3089 | } | |
3090 | #else /* ! coherent mmap */ | |
3091 | /* | |
3092 | * don't support mmap for status and control records. | |
3093 | */ | |
877211f5 | 3094 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3095 | struct vm_area_struct *area) |
3096 | { | |
3097 | return -ENXIO; | |
3098 | } | |
877211f5 | 3099 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3100 | struct vm_area_struct *area) |
3101 | { | |
3102 | return -ENXIO; | |
3103 | } | |
3104 | #endif /* coherent mmap */ | |
3105 | ||
9eb4a067 TI |
3106 | static inline struct page * |
3107 | snd_pcm_default_page_ops(struct snd_pcm_substream *substream, unsigned long ofs) | |
3108 | { | |
3109 | void *vaddr = substream->runtime->dma_area + ofs; | |
66b6cfac TI |
3110 | #if defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT) |
3111 | if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) | |
3112 | return virt_to_page(CAC_ADDR(vaddr)); | |
6985c887 TI |
3113 | #endif |
3114 | #if defined(CONFIG_PPC32) && defined(CONFIG_NOT_COHERENT_CACHE) | |
3115 | if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) { | |
3116 | dma_addr_t addr = substream->runtime->dma_addr + ofs; | |
3117 | addr -= get_dma_offset(substream->dma_buffer.dev.dev); | |
3118 | /* assume dma_handle set via pfn_to_phys() in | |
3119 | * mm/dma-noncoherent.c | |
3120 | */ | |
3121 | return pfn_to_page(addr >> PAGE_SHIFT); | |
3122 | } | |
66b6cfac | 3123 | #endif |
9eb4a067 TI |
3124 | return virt_to_page(vaddr); |
3125 | } | |
3126 | ||
1da177e4 | 3127 | /* |
3ad5afcd | 3128 | * fault callback for mmapping a RAM page |
1da177e4 | 3129 | */ |
3ad5afcd NP |
3130 | static int snd_pcm_mmap_data_fault(struct vm_area_struct *area, |
3131 | struct vm_fault *vmf) | |
1da177e4 | 3132 | { |
877211f5 TI |
3133 | struct snd_pcm_substream *substream = area->vm_private_data; |
3134 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3135 | unsigned long offset; |
3136 | struct page * page; | |
1da177e4 LT |
3137 | size_t dma_bytes; |
3138 | ||
3139 | if (substream == NULL) | |
3ad5afcd | 3140 | return VM_FAULT_SIGBUS; |
1da177e4 | 3141 | runtime = substream->runtime; |
3ad5afcd | 3142 | offset = vmf->pgoff << PAGE_SHIFT; |
1da177e4 LT |
3143 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
3144 | if (offset > dma_bytes - PAGE_SIZE) | |
3ad5afcd | 3145 | return VM_FAULT_SIGBUS; |
9eb4a067 | 3146 | if (substream->ops->page) |
1da177e4 | 3147 | page = substream->ops->page(substream, offset); |
9eb4a067 TI |
3148 | else |
3149 | page = snd_pcm_default_page_ops(substream, offset); | |
3150 | if (!page) | |
3151 | return VM_FAULT_SIGBUS; | |
b5810039 | 3152 | get_page(page); |
3ad5afcd NP |
3153 | vmf->page = page; |
3154 | return 0; | |
1da177e4 LT |
3155 | } |
3156 | ||
657b1989 TI |
3157 | static const struct vm_operations_struct snd_pcm_vm_ops_data = { |
3158 | .open = snd_pcm_mmap_data_open, | |
3159 | .close = snd_pcm_mmap_data_close, | |
3160 | }; | |
3161 | ||
3162 | static const struct vm_operations_struct snd_pcm_vm_ops_data_fault = { | |
1da177e4 LT |
3163 | .open = snd_pcm_mmap_data_open, |
3164 | .close = snd_pcm_mmap_data_close, | |
3ad5afcd | 3165 | .fault = snd_pcm_mmap_data_fault, |
1da177e4 LT |
3166 | }; |
3167 | ||
657b1989 TI |
3168 | #ifndef ARCH_HAS_DMA_MMAP_COHERENT |
3169 | /* This should be defined / handled globally! */ | |
3170 | #ifdef CONFIG_ARM | |
3171 | #define ARCH_HAS_DMA_MMAP_COHERENT | |
3172 | #endif | |
3173 | #endif | |
3174 | ||
1da177e4 LT |
3175 | /* |
3176 | * mmap the DMA buffer on RAM | |
3177 | */ | |
877211f5 TI |
3178 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
3179 | struct vm_area_struct *area) | |
1da177e4 | 3180 | { |
1da177e4 | 3181 | area->vm_flags |= VM_RESERVED; |
657b1989 TI |
3182 | #ifdef ARCH_HAS_DMA_MMAP_COHERENT |
3183 | if (!substream->ops->page && | |
3184 | substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) | |
3185 | return dma_mmap_coherent(substream->dma_buffer.dev.dev, | |
3186 | area, | |
3187 | substream->runtime->dma_area, | |
3188 | substream->runtime->dma_addr, | |
3189 | area->vm_end - area->vm_start); | |
9fe17b5d TI |
3190 | #elif defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT) |
3191 | if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV && | |
3192 | !plat_device_is_coherent(substream->dma_buffer.dev.dev)) | |
3193 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
657b1989 TI |
3194 | #endif /* ARCH_HAS_DMA_MMAP_COHERENT */ |
3195 | /* mmap with fault handler */ | |
3196 | area->vm_ops = &snd_pcm_vm_ops_data_fault; | |
1da177e4 LT |
3197 | return 0; |
3198 | } | |
3199 | ||
3200 | /* | |
3201 | * mmap the DMA buffer on I/O memory area | |
3202 | */ | |
3203 | #if SNDRV_PCM_INFO_MMAP_IOMEM | |
877211f5 TI |
3204 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
3205 | struct vm_area_struct *area) | |
1da177e4 LT |
3206 | { |
3207 | long size; | |
3208 | unsigned long offset; | |
3209 | ||
1da177e4 | 3210 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); |
1da177e4 LT |
3211 | area->vm_flags |= VM_IO; |
3212 | size = area->vm_end - area->vm_start; | |
3213 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3214 | if (io_remap_pfn_range(area, area->vm_start, | |
3215 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, | |
3216 | size, area->vm_page_prot)) | |
3217 | return -EAGAIN; | |
1da177e4 LT |
3218 | return 0; |
3219 | } | |
e88e8ae6 TI |
3220 | |
3221 | EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); | |
1da177e4 LT |
3222 | #endif /* SNDRV_PCM_INFO_MMAP */ |
3223 | ||
c32d977b TI |
3224 | /* mmap callback with pgprot_noncached */ |
3225 | int snd_pcm_lib_mmap_noncached(struct snd_pcm_substream *substream, | |
3226 | struct vm_area_struct *area) | |
3227 | { | |
3228 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
3229 | return snd_pcm_default_mmap(substream, area); | |
3230 | } | |
3231 | EXPORT_SYMBOL(snd_pcm_lib_mmap_noncached); | |
3232 | ||
1da177e4 LT |
3233 | /* |
3234 | * mmap DMA buffer | |
3235 | */ | |
877211f5 | 3236 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3237 | struct vm_area_struct *area) |
3238 | { | |
877211f5 | 3239 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3240 | long size; |
3241 | unsigned long offset; | |
3242 | size_t dma_bytes; | |
657b1989 | 3243 | int err; |
1da177e4 LT |
3244 | |
3245 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
3246 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) | |
3247 | return -EINVAL; | |
3248 | } else { | |
3249 | if (!(area->vm_flags & VM_READ)) | |
3250 | return -EINVAL; | |
3251 | } | |
3252 | runtime = substream->runtime; | |
1da177e4 LT |
3253 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
3254 | return -EBADFD; | |
3255 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) | |
3256 | return -ENXIO; | |
3257 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || | |
3258 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) | |
3259 | return -EINVAL; | |
3260 | size = area->vm_end - area->vm_start; | |
3261 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3262 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3263 | if ((size_t)size > dma_bytes) | |
3264 | return -EINVAL; | |
3265 | if (offset > dma_bytes - size) | |
3266 | return -EINVAL; | |
3267 | ||
657b1989 TI |
3268 | area->vm_ops = &snd_pcm_vm_ops_data; |
3269 | area->vm_private_data = substream; | |
1da177e4 | 3270 | if (substream->ops->mmap) |
657b1989 | 3271 | err = substream->ops->mmap(substream, area); |
1da177e4 | 3272 | else |
657b1989 TI |
3273 | err = snd_pcm_default_mmap(substream, area); |
3274 | if (!err) | |
3275 | atomic_inc(&substream->mmap_count); | |
3276 | return err; | |
1da177e4 LT |
3277 | } |
3278 | ||
e88e8ae6 TI |
3279 | EXPORT_SYMBOL(snd_pcm_mmap_data); |
3280 | ||
1da177e4 LT |
3281 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
3282 | { | |
877211f5 TI |
3283 | struct snd_pcm_file * pcm_file; |
3284 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
3285 | unsigned long offset; |
3286 | ||
3287 | pcm_file = file->private_data; | |
3288 | substream = pcm_file->substream; | |
7eaa943c TI |
3289 | if (PCM_RUNTIME_CHECK(substream)) |
3290 | return -ENXIO; | |
1da177e4 LT |
3291 | |
3292 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3293 | switch (offset) { | |
3294 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
548a648b | 3295 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3296 | return -ENXIO; |
3297 | return snd_pcm_mmap_status(substream, file, area); | |
3298 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
548a648b | 3299 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3300 | return -ENXIO; |
3301 | return snd_pcm_mmap_control(substream, file, area); | |
3302 | default: | |
3303 | return snd_pcm_mmap_data(substream, file, area); | |
3304 | } | |
3305 | return 0; | |
3306 | } | |
3307 | ||
3308 | static int snd_pcm_fasync(int fd, struct file * file, int on) | |
3309 | { | |
877211f5 TI |
3310 | struct snd_pcm_file * pcm_file; |
3311 | struct snd_pcm_substream *substream; | |
3312 | struct snd_pcm_runtime *runtime; | |
2db9f0a3 | 3313 | int err = -ENXIO; |
1da177e4 | 3314 | |
2db9f0a3 | 3315 | lock_kernel(); |
1da177e4 LT |
3316 | pcm_file = file->private_data; |
3317 | substream = pcm_file->substream; | |
7eaa943c TI |
3318 | if (PCM_RUNTIME_CHECK(substream)) |
3319 | goto out; | |
1da177e4 | 3320 | runtime = substream->runtime; |
1da177e4 | 3321 | err = fasync_helper(fd, file, on, &runtime->fasync); |
685d87f7 | 3322 | out: |
2db9f0a3 | 3323 | unlock_kernel(); |
60aa4924 | 3324 | return err; |
1da177e4 LT |
3325 | } |
3326 | ||
3327 | /* | |
3328 | * ioctl32 compat | |
3329 | */ | |
3330 | #ifdef CONFIG_COMPAT | |
3331 | #include "pcm_compat.c" | |
3332 | #else | |
3333 | #define snd_pcm_ioctl_compat NULL | |
3334 | #endif | |
3335 | ||
3336 | /* | |
3337 | * To be removed helpers to keep binary compatibility | |
3338 | */ | |
3339 | ||
59d48582 | 3340 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
3341 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
3342 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) | |
3343 | ||
877211f5 TI |
3344 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
3345 | struct snd_pcm_hw_params_old *oparams) | |
1da177e4 LT |
3346 | { |
3347 | unsigned int i; | |
3348 | ||
3349 | memset(params, 0, sizeof(*params)); | |
3350 | params->flags = oparams->flags; | |
3351 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3352 | params->masks[i].bits[0] = oparams->masks[i]; | |
3353 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); | |
3354 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); | |
3355 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); | |
3356 | params->info = oparams->info; | |
3357 | params->msbits = oparams->msbits; | |
3358 | params->rate_num = oparams->rate_num; | |
3359 | params->rate_den = oparams->rate_den; | |
3360 | params->fifo_size = oparams->fifo_size; | |
3361 | } | |
3362 | ||
877211f5 TI |
3363 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
3364 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
3365 | { |
3366 | unsigned int i; | |
3367 | ||
3368 | memset(oparams, 0, sizeof(*oparams)); | |
3369 | oparams->flags = params->flags; | |
3370 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3371 | oparams->masks[i] = params->masks[i].bits[0]; | |
3372 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); | |
3373 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); | |
3374 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); | |
3375 | oparams->info = params->info; | |
3376 | oparams->msbits = params->msbits; | |
3377 | oparams->rate_num = params->rate_num; | |
3378 | oparams->rate_den = params->rate_den; | |
3379 | oparams->fifo_size = params->fifo_size; | |
3380 | } | |
3381 | ||
877211f5 TI |
3382 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
3383 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3384 | { |
877211f5 TI |
3385 | struct snd_pcm_hw_params *params; |
3386 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3387 | int err; |
3388 | ||
3389 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
ef44a1ec LZ |
3390 | if (!params) |
3391 | return -ENOMEM; | |
1da177e4 | 3392 | |
ef44a1ec LZ |
3393 | oparams = memdup_user(_oparams, sizeof(*oparams)); |
3394 | if (IS_ERR(oparams)) { | |
3395 | err = PTR_ERR(oparams); | |
1da177e4 LT |
3396 | goto out; |
3397 | } | |
3398 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3399 | err = snd_pcm_hw_refine(substream, params); | |
3400 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3401 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3402 | if (!err) | |
3403 | err = -EFAULT; | |
3404 | } | |
ef44a1ec LZ |
3405 | |
3406 | kfree(oparams); | |
1da177e4 LT |
3407 | out: |
3408 | kfree(params); | |
1da177e4 LT |
3409 | return err; |
3410 | } | |
3411 | ||
877211f5 TI |
3412 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
3413 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3414 | { |
877211f5 TI |
3415 | struct snd_pcm_hw_params *params; |
3416 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3417 | int err; |
3418 | ||
3419 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
ef44a1ec LZ |
3420 | if (!params) |
3421 | return -ENOMEM; | |
3422 | ||
3423 | oparams = memdup_user(_oparams, sizeof(*oparams)); | |
3424 | if (IS_ERR(oparams)) { | |
3425 | err = PTR_ERR(oparams); | |
1da177e4 LT |
3426 | goto out; |
3427 | } | |
3428 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3429 | err = snd_pcm_hw_params(substream, params); | |
3430 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3431 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3432 | if (!err) | |
3433 | err = -EFAULT; | |
3434 | } | |
ef44a1ec LZ |
3435 | |
3436 | kfree(oparams); | |
1da177e4 LT |
3437 | out: |
3438 | kfree(params); | |
1da177e4 LT |
3439 | return err; |
3440 | } | |
59d48582 | 3441 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
1da177e4 | 3442 | |
7003609b CC |
3443 | #ifndef CONFIG_MMU |
3444 | unsigned long dummy_get_unmapped_area(struct file *file, unsigned long addr, | |
3445 | unsigned long len, unsigned long pgoff, | |
3446 | unsigned long flags) | |
3447 | { | |
3448 | return 0; | |
3449 | } | |
3450 | #else | |
3451 | # define dummy_get_unmapped_area NULL | |
3452 | #endif | |
3453 | ||
1da177e4 LT |
3454 | /* |
3455 | * Register section | |
3456 | */ | |
3457 | ||
9c2e08c5 | 3458 | const struct file_operations snd_pcm_f_ops[2] = { |
1da177e4 | 3459 | { |
2af677fc CL |
3460 | .owner = THIS_MODULE, |
3461 | .write = snd_pcm_write, | |
ee0b3e67 | 3462 | .aio_write = snd_pcm_aio_write, |
f87135f5 | 3463 | .open = snd_pcm_playback_open, |
2af677fc CL |
3464 | .release = snd_pcm_release, |
3465 | .poll = snd_pcm_playback_poll, | |
3466 | .unlocked_ioctl = snd_pcm_playback_ioctl, | |
3467 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3468 | .mmap = snd_pcm_mmap, | |
3469 | .fasync = snd_pcm_fasync, | |
7003609b | 3470 | .get_unmapped_area = dummy_get_unmapped_area, |
1da177e4 LT |
3471 | }, |
3472 | { | |
2af677fc CL |
3473 | .owner = THIS_MODULE, |
3474 | .read = snd_pcm_read, | |
ee0b3e67 | 3475 | .aio_read = snd_pcm_aio_read, |
f87135f5 | 3476 | .open = snd_pcm_capture_open, |
2af677fc CL |
3477 | .release = snd_pcm_release, |
3478 | .poll = snd_pcm_capture_poll, | |
3479 | .unlocked_ioctl = snd_pcm_capture_ioctl, | |
3480 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3481 | .mmap = snd_pcm_mmap, | |
3482 | .fasync = snd_pcm_fasync, | |
7003609b | 3483 | .get_unmapped_area = dummy_get_unmapped_area, |
1da177e4 LT |
3484 | } |
3485 | }; |