Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Digital Audio (PCM) abstract layer |
| 3 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> |
| 4 | * |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #include <sound/driver.h> |
| 23 | #include <linux/mm.h> |
| 24 | #include <linux/smp_lock.h> |
| 25 | #include <linux/file.h> |
| 26 | #include <linux/slab.h> |
| 27 | #include <linux/time.h> |
| 28 | #include <linux/uio.h> |
| 29 | #include <sound/core.h> |
| 30 | #include <sound/control.h> |
| 31 | #include <sound/info.h> |
| 32 | #include <sound/pcm.h> |
| 33 | #include <sound/pcm_params.h> |
| 34 | #include <sound/timer.h> |
| 35 | #include <sound/minors.h> |
| 36 | #include <asm/io.h> |
| 37 | |
| 38 | /* |
| 39 | * Compatibility |
| 40 | */ |
| 41 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 42 | struct snd_pcm_hw_params_old { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | unsigned int flags; |
| 44 | unsigned int masks[SNDRV_PCM_HW_PARAM_SUBFORMAT - |
| 45 | SNDRV_PCM_HW_PARAM_ACCESS + 1]; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 46 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_TICK_TIME - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS + 1]; |
| 48 | unsigned int rmask; |
| 49 | unsigned int cmask; |
| 50 | unsigned int info; |
| 51 | unsigned int msbits; |
| 52 | unsigned int rate_num; |
| 53 | unsigned int rate_den; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 54 | snd_pcm_uframes_t fifo_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | unsigned char reserved[64]; |
| 56 | }; |
| 57 | |
Takashi Iwai | 59d4858 | 2005-12-01 10:51:58 +0100 | [diff] [blame] | 58 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 59 | #define SNDRV_PCM_IOCTL_HW_REFINE_OLD _IOWR('A', 0x10, struct snd_pcm_hw_params_old) |
| 60 | #define SNDRV_PCM_IOCTL_HW_PARAMS_OLD _IOWR('A', 0x11, struct snd_pcm_hw_params_old) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 62 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
| 63 | struct snd_pcm_hw_params_old __user * _oparams); |
| 64 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
| 65 | struct snd_pcm_hw_params_old __user * _oparams); |
Takashi Iwai | 59d4858 | 2005-12-01 10:51:58 +0100 | [diff] [blame] | 66 | #endif |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 67 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | /* |
| 70 | * |
| 71 | */ |
| 72 | |
| 73 | DEFINE_RWLOCK(snd_pcm_link_rwlock); |
| 74 | static DECLARE_RWSEM(snd_pcm_link_rwsem); |
| 75 | |
| 76 | |
| 77 | static inline mm_segment_t snd_enter_user(void) |
| 78 | { |
| 79 | mm_segment_t fs = get_fs(); |
| 80 | set_fs(get_ds()); |
| 81 | return fs; |
| 82 | } |
| 83 | |
| 84 | static inline void snd_leave_user(mm_segment_t fs) |
| 85 | { |
| 86 | set_fs(fs); |
| 87 | } |
| 88 | |
| 89 | |
| 90 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 91 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 93 | struct snd_pcm_runtime *runtime; |
| 94 | struct snd_pcm *pcm = substream->pcm; |
| 95 | struct snd_pcm_str *pstr = substream->pstr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | |
| 97 | snd_assert(substream != NULL, return -ENXIO); |
| 98 | memset(info, 0, sizeof(*info)); |
| 99 | info->card = pcm->card->number; |
| 100 | info->device = pcm->device; |
| 101 | info->stream = substream->stream; |
| 102 | info->subdevice = substream->number; |
| 103 | strlcpy(info->id, pcm->id, sizeof(info->id)); |
| 104 | strlcpy(info->name, pcm->name, sizeof(info->name)); |
| 105 | info->dev_class = pcm->dev_class; |
| 106 | info->dev_subclass = pcm->dev_subclass; |
| 107 | info->subdevices_count = pstr->substream_count; |
| 108 | info->subdevices_avail = pstr->substream_count - pstr->substream_opened; |
| 109 | strlcpy(info->subname, substream->name, sizeof(info->subname)); |
| 110 | runtime = substream->runtime; |
| 111 | /* AB: FIXME!!! This is definitely nonsense */ |
| 112 | if (runtime) { |
| 113 | info->sync = runtime->sync; |
| 114 | substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info); |
| 115 | } |
| 116 | return 0; |
| 117 | } |
| 118 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 119 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
| 120 | struct snd_pcm_info __user * _info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 122 | struct snd_pcm_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | int err; |
| 124 | |
| 125 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 126 | if (! info) |
| 127 | return -ENOMEM; |
| 128 | err = snd_pcm_info(substream, info); |
| 129 | if (err >= 0) { |
| 130 | if (copy_to_user(_info, info, sizeof(*info))) |
| 131 | err = -EFAULT; |
| 132 | } |
| 133 | kfree(info); |
| 134 | return err; |
| 135 | } |
| 136 | |
| 137 | #undef RULES_DEBUG |
| 138 | |
| 139 | #ifdef RULES_DEBUG |
| 140 | #define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v |
| 141 | char *snd_pcm_hw_param_names[] = { |
| 142 | HW_PARAM(ACCESS), |
| 143 | HW_PARAM(FORMAT), |
| 144 | HW_PARAM(SUBFORMAT), |
| 145 | HW_PARAM(SAMPLE_BITS), |
| 146 | HW_PARAM(FRAME_BITS), |
| 147 | HW_PARAM(CHANNELS), |
| 148 | HW_PARAM(RATE), |
| 149 | HW_PARAM(PERIOD_TIME), |
| 150 | HW_PARAM(PERIOD_SIZE), |
| 151 | HW_PARAM(PERIOD_BYTES), |
| 152 | HW_PARAM(PERIODS), |
| 153 | HW_PARAM(BUFFER_TIME), |
| 154 | HW_PARAM(BUFFER_SIZE), |
| 155 | HW_PARAM(BUFFER_BYTES), |
| 156 | HW_PARAM(TICK_TIME), |
| 157 | }; |
| 158 | #endif |
| 159 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 160 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, |
| 161 | struct snd_pcm_hw_params *params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | { |
| 163 | unsigned int k; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 164 | struct snd_pcm_hardware *hw; |
| 165 | struct snd_interval *i = NULL; |
| 166 | struct snd_mask *m = NULL; |
| 167 | struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | unsigned int rstamps[constrs->rules_num]; |
| 169 | unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; |
| 170 | unsigned int stamp = 2; |
| 171 | int changed, again; |
| 172 | |
| 173 | params->info = 0; |
| 174 | params->fifo_size = 0; |
| 175 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) |
| 176 | params->msbits = 0; |
| 177 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { |
| 178 | params->rate_num = 0; |
| 179 | params->rate_den = 0; |
| 180 | } |
| 181 | |
| 182 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { |
| 183 | m = hw_param_mask(params, k); |
| 184 | if (snd_mask_empty(m)) |
| 185 | return -EINVAL; |
| 186 | if (!(params->rmask & (1 << k))) |
| 187 | continue; |
| 188 | #ifdef RULES_DEBUG |
| 189 | printk("%s = ", snd_pcm_hw_param_names[k]); |
| 190 | printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); |
| 191 | #endif |
| 192 | changed = snd_mask_refine(m, constrs_mask(constrs, k)); |
| 193 | #ifdef RULES_DEBUG |
| 194 | printk("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); |
| 195 | #endif |
| 196 | if (changed) |
| 197 | params->cmask |= 1 << k; |
| 198 | if (changed < 0) |
| 199 | return changed; |
| 200 | } |
| 201 | |
| 202 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { |
| 203 | i = hw_param_interval(params, k); |
| 204 | if (snd_interval_empty(i)) |
| 205 | return -EINVAL; |
| 206 | if (!(params->rmask & (1 << k))) |
| 207 | continue; |
| 208 | #ifdef RULES_DEBUG |
| 209 | printk("%s = ", snd_pcm_hw_param_names[k]); |
| 210 | if (i->empty) |
| 211 | printk("empty"); |
| 212 | else |
| 213 | printk("%c%u %u%c", |
| 214 | i->openmin ? '(' : '[', i->min, |
| 215 | i->max, i->openmax ? ')' : ']'); |
| 216 | printk(" -> "); |
| 217 | #endif |
| 218 | changed = snd_interval_refine(i, constrs_interval(constrs, k)); |
| 219 | #ifdef RULES_DEBUG |
| 220 | if (i->empty) |
| 221 | printk("empty\n"); |
| 222 | else |
| 223 | printk("%c%u %u%c\n", |
| 224 | i->openmin ? '(' : '[', i->min, |
| 225 | i->max, i->openmax ? ')' : ']'); |
| 226 | #endif |
| 227 | if (changed) |
| 228 | params->cmask |= 1 << k; |
| 229 | if (changed < 0) |
| 230 | return changed; |
| 231 | } |
| 232 | |
| 233 | for (k = 0; k < constrs->rules_num; k++) |
| 234 | rstamps[k] = 0; |
| 235 | for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) |
| 236 | vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0; |
| 237 | do { |
| 238 | again = 0; |
| 239 | for (k = 0; k < constrs->rules_num; k++) { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 240 | struct snd_pcm_hw_rule *r = &constrs->rules[k]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | unsigned int d; |
| 242 | int doit = 0; |
| 243 | if (r->cond && !(r->cond & params->flags)) |
| 244 | continue; |
| 245 | for (d = 0; r->deps[d] >= 0; d++) { |
| 246 | if (vstamps[r->deps[d]] > rstamps[k]) { |
| 247 | doit = 1; |
| 248 | break; |
| 249 | } |
| 250 | } |
| 251 | if (!doit) |
| 252 | continue; |
| 253 | #ifdef RULES_DEBUG |
| 254 | printk("Rule %d [%p]: ", k, r->func); |
| 255 | if (r->var >= 0) { |
| 256 | printk("%s = ", snd_pcm_hw_param_names[r->var]); |
| 257 | if (hw_is_mask(r->var)) { |
| 258 | m = hw_param_mask(params, r->var); |
| 259 | printk("%x", *m->bits); |
| 260 | } else { |
| 261 | i = hw_param_interval(params, r->var); |
| 262 | if (i->empty) |
| 263 | printk("empty"); |
| 264 | else |
| 265 | printk("%c%u %u%c", |
| 266 | i->openmin ? '(' : '[', i->min, |
| 267 | i->max, i->openmax ? ')' : ']'); |
| 268 | } |
| 269 | } |
| 270 | #endif |
| 271 | changed = r->func(params, r); |
| 272 | #ifdef RULES_DEBUG |
| 273 | if (r->var >= 0) { |
| 274 | printk(" -> "); |
| 275 | if (hw_is_mask(r->var)) |
| 276 | printk("%x", *m->bits); |
| 277 | else { |
| 278 | if (i->empty) |
| 279 | printk("empty"); |
| 280 | else |
| 281 | printk("%c%u %u%c", |
| 282 | i->openmin ? '(' : '[', i->min, |
| 283 | i->max, i->openmax ? ')' : ']'); |
| 284 | } |
| 285 | } |
| 286 | printk("\n"); |
| 287 | #endif |
| 288 | rstamps[k] = stamp; |
| 289 | if (changed && r->var >= 0) { |
| 290 | params->cmask |= (1 << r->var); |
| 291 | vstamps[r->var] = stamp; |
| 292 | again = 1; |
| 293 | } |
| 294 | if (changed < 0) |
| 295 | return changed; |
| 296 | stamp++; |
| 297 | } |
| 298 | } while (again); |
| 299 | if (!params->msbits) { |
| 300 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); |
| 301 | if (snd_interval_single(i)) |
| 302 | params->msbits = snd_interval_value(i); |
| 303 | } |
| 304 | |
| 305 | if (!params->rate_den) { |
| 306 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
| 307 | if (snd_interval_single(i)) { |
| 308 | params->rate_num = snd_interval_value(i); |
| 309 | params->rate_den = 1; |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | hw = &substream->runtime->hw; |
| 314 | if (!params->info) |
| 315 | params->info = hw->info; |
| 316 | if (!params->fifo_size) |
| 317 | params->fifo_size = hw->fifo_size; |
| 318 | params->rmask = 0; |
| 319 | return 0; |
| 320 | } |
| 321 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 322 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
| 323 | struct snd_pcm_hw_params __user * _params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 325 | struct snd_pcm_hw_params *params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | int err; |
| 327 | |
| 328 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 329 | if (!params) { |
| 330 | err = -ENOMEM; |
| 331 | goto out; |
| 332 | } |
| 333 | if (copy_from_user(params, _params, sizeof(*params))) { |
| 334 | err = -EFAULT; |
| 335 | goto out; |
| 336 | } |
| 337 | err = snd_pcm_hw_refine(substream, params); |
| 338 | if (copy_to_user(_params, params, sizeof(*params))) { |
| 339 | if (!err) |
| 340 | err = -EFAULT; |
| 341 | } |
| 342 | out: |
| 343 | kfree(params); |
| 344 | return err; |
| 345 | } |
| 346 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 347 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
| 348 | struct snd_pcm_hw_params *params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 350 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | int err; |
| 352 | unsigned int bits; |
| 353 | snd_pcm_uframes_t frames; |
| 354 | |
| 355 | snd_assert(substream != NULL, return -ENXIO); |
| 356 | runtime = substream->runtime; |
| 357 | snd_assert(runtime != NULL, return -ENXIO); |
| 358 | snd_pcm_stream_lock_irq(substream); |
| 359 | switch (runtime->status->state) { |
| 360 | case SNDRV_PCM_STATE_OPEN: |
| 361 | case SNDRV_PCM_STATE_SETUP: |
| 362 | case SNDRV_PCM_STATE_PREPARED: |
| 363 | break; |
| 364 | default: |
| 365 | snd_pcm_stream_unlock_irq(substream); |
| 366 | return -EBADFD; |
| 367 | } |
| 368 | snd_pcm_stream_unlock_irq(substream); |
| 369 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 370 | if (!substream->oss.oss) |
| 371 | #endif |
| 372 | if (atomic_read(&runtime->mmap_count)) |
| 373 | return -EBADFD; |
| 374 | |
| 375 | params->rmask = ~0U; |
| 376 | err = snd_pcm_hw_refine(substream, params); |
| 377 | if (err < 0) |
| 378 | goto _error; |
| 379 | |
| 380 | err = snd_pcm_hw_params_choose(substream, params); |
| 381 | if (err < 0) |
| 382 | goto _error; |
| 383 | |
| 384 | if (substream->ops->hw_params != NULL) { |
| 385 | err = substream->ops->hw_params(substream, params); |
| 386 | if (err < 0) |
| 387 | goto _error; |
| 388 | } |
| 389 | |
| 390 | runtime->access = params_access(params); |
| 391 | runtime->format = params_format(params); |
| 392 | runtime->subformat = params_subformat(params); |
| 393 | runtime->channels = params_channels(params); |
| 394 | runtime->rate = params_rate(params); |
| 395 | runtime->period_size = params_period_size(params); |
| 396 | runtime->periods = params_periods(params); |
| 397 | runtime->buffer_size = params_buffer_size(params); |
| 398 | runtime->tick_time = params_tick_time(params); |
| 399 | runtime->info = params->info; |
| 400 | runtime->rate_num = params->rate_num; |
| 401 | runtime->rate_den = params->rate_den; |
| 402 | |
| 403 | bits = snd_pcm_format_physical_width(runtime->format); |
| 404 | runtime->sample_bits = bits; |
| 405 | bits *= runtime->channels; |
| 406 | runtime->frame_bits = bits; |
| 407 | frames = 1; |
| 408 | while (bits % 8 != 0) { |
| 409 | bits *= 2; |
| 410 | frames *= 2; |
| 411 | } |
| 412 | runtime->byte_align = bits / 8; |
| 413 | runtime->min_align = frames; |
| 414 | |
| 415 | /* Default sw params */ |
| 416 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; |
| 417 | runtime->period_step = 1; |
| 418 | runtime->sleep_min = 0; |
| 419 | runtime->control->avail_min = runtime->period_size; |
| 420 | runtime->xfer_align = runtime->period_size; |
| 421 | runtime->start_threshold = 1; |
| 422 | runtime->stop_threshold = runtime->buffer_size; |
| 423 | runtime->silence_threshold = 0; |
| 424 | runtime->silence_size = 0; |
| 425 | runtime->boundary = runtime->buffer_size; |
| 426 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) |
| 427 | runtime->boundary *= 2; |
| 428 | |
| 429 | snd_pcm_timer_resolution_change(substream); |
| 430 | runtime->status->state = SNDRV_PCM_STATE_SETUP; |
| 431 | return 0; |
| 432 | _error: |
| 433 | /* hardware might be unuseable from this time, |
| 434 | so we force application to retry to set |
| 435 | the correct hardware parameter settings */ |
| 436 | runtime->status->state = SNDRV_PCM_STATE_OPEN; |
| 437 | if (substream->ops->hw_free != NULL) |
| 438 | substream->ops->hw_free(substream); |
| 439 | return err; |
| 440 | } |
| 441 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 442 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
| 443 | struct snd_pcm_hw_params __user * _params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 445 | struct snd_pcm_hw_params *params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | int err; |
| 447 | |
| 448 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 449 | if (!params) { |
| 450 | err = -ENOMEM; |
| 451 | goto out; |
| 452 | } |
| 453 | if (copy_from_user(params, _params, sizeof(*params))) { |
| 454 | err = -EFAULT; |
| 455 | goto out; |
| 456 | } |
| 457 | err = snd_pcm_hw_params(substream, params); |
| 458 | if (copy_to_user(_params, params, sizeof(*params))) { |
| 459 | if (!err) |
| 460 | err = -EFAULT; |
| 461 | } |
| 462 | out: |
| 463 | kfree(params); |
| 464 | return err; |
| 465 | } |
| 466 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 467 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 469 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | int result = 0; |
| 471 | |
| 472 | snd_assert(substream != NULL, return -ENXIO); |
| 473 | runtime = substream->runtime; |
| 474 | snd_assert(runtime != NULL, return -ENXIO); |
| 475 | snd_pcm_stream_lock_irq(substream); |
| 476 | switch (runtime->status->state) { |
| 477 | case SNDRV_PCM_STATE_SETUP: |
| 478 | case SNDRV_PCM_STATE_PREPARED: |
| 479 | break; |
| 480 | default: |
| 481 | snd_pcm_stream_unlock_irq(substream); |
| 482 | return -EBADFD; |
| 483 | } |
| 484 | snd_pcm_stream_unlock_irq(substream); |
| 485 | if (atomic_read(&runtime->mmap_count)) |
| 486 | return -EBADFD; |
| 487 | if (substream->ops->hw_free) |
| 488 | result = substream->ops->hw_free(substream); |
| 489 | runtime->status->state = SNDRV_PCM_STATE_OPEN; |
| 490 | return result; |
| 491 | } |
| 492 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 493 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
| 494 | struct snd_pcm_sw_params *params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 496 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
| 498 | snd_assert(substream != NULL, return -ENXIO); |
| 499 | runtime = substream->runtime; |
| 500 | snd_assert(runtime != NULL, return -ENXIO); |
| 501 | snd_pcm_stream_lock_irq(substream); |
| 502 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 503 | snd_pcm_stream_unlock_irq(substream); |
| 504 | return -EBADFD; |
| 505 | } |
| 506 | snd_pcm_stream_unlock_irq(substream); |
| 507 | |
| 508 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) |
| 509 | return -EINVAL; |
| 510 | if (params->avail_min == 0) |
| 511 | return -EINVAL; |
| 512 | if (params->xfer_align == 0 || |
| 513 | params->xfer_align % runtime->min_align != 0) |
| 514 | return -EINVAL; |
| 515 | if (params->silence_size >= runtime->boundary) { |
| 516 | if (params->silence_threshold != 0) |
| 517 | return -EINVAL; |
| 518 | } else { |
| 519 | if (params->silence_size > params->silence_threshold) |
| 520 | return -EINVAL; |
| 521 | if (params->silence_threshold > runtime->buffer_size) |
| 522 | return -EINVAL; |
| 523 | } |
| 524 | snd_pcm_stream_lock_irq(substream); |
| 525 | runtime->tstamp_mode = params->tstamp_mode; |
| 526 | runtime->sleep_min = params->sleep_min; |
| 527 | runtime->period_step = params->period_step; |
| 528 | runtime->control->avail_min = params->avail_min; |
| 529 | runtime->start_threshold = params->start_threshold; |
| 530 | runtime->stop_threshold = params->stop_threshold; |
| 531 | runtime->silence_threshold = params->silence_threshold; |
| 532 | runtime->silence_size = params->silence_size; |
| 533 | runtime->xfer_align = params->xfer_align; |
| 534 | params->boundary = runtime->boundary; |
| 535 | if (snd_pcm_running(substream)) { |
| 536 | if (runtime->sleep_min) |
| 537 | snd_pcm_tick_prepare(substream); |
| 538 | else |
| 539 | snd_pcm_tick_set(substream, 0); |
| 540 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
| 541 | runtime->silence_size > 0) |
| 542 | snd_pcm_playback_silence(substream, ULONG_MAX); |
| 543 | wake_up(&runtime->sleep); |
| 544 | } |
| 545 | snd_pcm_stream_unlock_irq(substream); |
| 546 | return 0; |
| 547 | } |
| 548 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 549 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
| 550 | struct snd_pcm_sw_params __user * _params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 552 | struct snd_pcm_sw_params params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | int err; |
| 554 | if (copy_from_user(¶ms, _params, sizeof(params))) |
| 555 | return -EFAULT; |
| 556 | err = snd_pcm_sw_params(substream, ¶ms); |
| 557 | if (copy_to_user(_params, ¶ms, sizeof(params))) |
| 558 | return -EFAULT; |
| 559 | return err; |
| 560 | } |
| 561 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 562 | int snd_pcm_status(struct snd_pcm_substream *substream, |
| 563 | struct snd_pcm_status *status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 565 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
| 567 | snd_pcm_stream_lock_irq(substream); |
| 568 | status->state = runtime->status->state; |
| 569 | status->suspended_state = runtime->status->suspended_state; |
| 570 | if (status->state == SNDRV_PCM_STATE_OPEN) |
| 571 | goto _end; |
| 572 | status->trigger_tstamp = runtime->trigger_tstamp; |
| 573 | if (snd_pcm_running(substream)) { |
| 574 | snd_pcm_update_hw_ptr(substream); |
| 575 | if (runtime->tstamp_mode & SNDRV_PCM_TSTAMP_MMAP) |
| 576 | status->tstamp = runtime->status->tstamp; |
| 577 | else |
Takashi Iwai | 07799e7 | 2005-10-10 11:49:49 +0200 | [diff] [blame] | 578 | getnstimeofday(&status->tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | } else |
Takashi Iwai | 07799e7 | 2005-10-10 11:49:49 +0200 | [diff] [blame] | 580 | getnstimeofday(&status->tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | status->appl_ptr = runtime->control->appl_ptr; |
| 582 | status->hw_ptr = runtime->status->hw_ptr; |
| 583 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 584 | status->avail = snd_pcm_playback_avail(runtime); |
| 585 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || |
| 586 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) |
| 587 | status->delay = runtime->buffer_size - status->avail; |
| 588 | else |
| 589 | status->delay = 0; |
| 590 | } else { |
| 591 | status->avail = snd_pcm_capture_avail(runtime); |
| 592 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) |
| 593 | status->delay = status->avail; |
| 594 | else |
| 595 | status->delay = 0; |
| 596 | } |
| 597 | status->avail_max = runtime->avail_max; |
| 598 | status->overrange = runtime->overrange; |
| 599 | runtime->avail_max = 0; |
| 600 | runtime->overrange = 0; |
| 601 | _end: |
| 602 | snd_pcm_stream_unlock_irq(substream); |
| 603 | return 0; |
| 604 | } |
| 605 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 606 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
| 607 | struct snd_pcm_status __user * _status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 609 | struct snd_pcm_status status; |
| 610 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | int res; |
| 612 | |
| 613 | snd_assert(substream != NULL, return -ENXIO); |
| 614 | runtime = substream->runtime; |
| 615 | memset(&status, 0, sizeof(status)); |
| 616 | res = snd_pcm_status(substream, &status); |
| 617 | if (res < 0) |
| 618 | return res; |
| 619 | if (copy_to_user(_status, &status, sizeof(status))) |
| 620 | return -EFAULT; |
| 621 | return 0; |
| 622 | } |
| 623 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 624 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
| 625 | struct snd_pcm_channel_info * info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 627 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | unsigned int channel; |
| 629 | |
| 630 | snd_assert(substream != NULL, return -ENXIO); |
| 631 | channel = info->channel; |
| 632 | runtime = substream->runtime; |
| 633 | snd_pcm_stream_lock_irq(substream); |
| 634 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 635 | snd_pcm_stream_unlock_irq(substream); |
| 636 | return -EBADFD; |
| 637 | } |
| 638 | snd_pcm_stream_unlock_irq(substream); |
| 639 | if (channel >= runtime->channels) |
| 640 | return -EINVAL; |
| 641 | memset(info, 0, sizeof(*info)); |
| 642 | info->channel = channel; |
| 643 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); |
| 644 | } |
| 645 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 646 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
| 647 | struct snd_pcm_channel_info __user * _info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 649 | struct snd_pcm_channel_info info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | int res; |
| 651 | |
| 652 | if (copy_from_user(&info, _info, sizeof(info))) |
| 653 | return -EFAULT; |
| 654 | res = snd_pcm_channel_info(substream, &info); |
| 655 | if (res < 0) |
| 656 | return res; |
| 657 | if (copy_to_user(_info, &info, sizeof(info))) |
| 658 | return -EFAULT; |
| 659 | return 0; |
| 660 | } |
| 661 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 662 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 664 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | if (runtime->trigger_master == NULL) |
| 666 | return; |
| 667 | if (runtime->trigger_master == substream) { |
Takashi Iwai | 07799e7 | 2005-10-10 11:49:49 +0200 | [diff] [blame] | 668 | getnstimeofday(&runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | } else { |
| 670 | snd_pcm_trigger_tstamp(runtime->trigger_master); |
| 671 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; |
| 672 | } |
| 673 | runtime->trigger_master = NULL; |
| 674 | } |
| 675 | |
| 676 | struct action_ops { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 677 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
| 678 | int (*do_action)(struct snd_pcm_substream *substream, int state); |
| 679 | void (*undo_action)(struct snd_pcm_substream *substream, int state); |
| 680 | void (*post_action)(struct snd_pcm_substream *substream, int state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | }; |
| 682 | |
| 683 | /* |
| 684 | * this functions is core for handling of linked stream |
| 685 | * Note: the stream state might be changed also on failure |
| 686 | * Note2: call with calling stream lock + link lock |
| 687 | */ |
| 688 | static int snd_pcm_action_group(struct action_ops *ops, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 689 | struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | int state, int do_lock) |
| 691 | { |
| 692 | struct list_head *pos; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 693 | struct snd_pcm_substream *s = NULL; |
| 694 | struct snd_pcm_substream *s1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | int res = 0; |
| 696 | |
| 697 | snd_pcm_group_for_each(pos, substream) { |
| 698 | s = snd_pcm_group_substream_entry(pos); |
| 699 | if (do_lock && s != substream) |
| 700 | spin_lock(&s->self_group.lock); |
| 701 | res = ops->pre_action(s, state); |
| 702 | if (res < 0) |
| 703 | goto _unlock; |
| 704 | } |
| 705 | snd_pcm_group_for_each(pos, substream) { |
| 706 | s = snd_pcm_group_substream_entry(pos); |
| 707 | res = ops->do_action(s, state); |
| 708 | if (res < 0) { |
| 709 | if (ops->undo_action) { |
| 710 | snd_pcm_group_for_each(pos, substream) { |
| 711 | s1 = snd_pcm_group_substream_entry(pos); |
| 712 | if (s1 == s) /* failed stream */ |
| 713 | break; |
| 714 | ops->undo_action(s1, state); |
| 715 | } |
| 716 | } |
| 717 | s = NULL; /* unlock all */ |
| 718 | goto _unlock; |
| 719 | } |
| 720 | } |
| 721 | snd_pcm_group_for_each(pos, substream) { |
| 722 | s = snd_pcm_group_substream_entry(pos); |
| 723 | ops->post_action(s, state); |
| 724 | } |
| 725 | _unlock: |
| 726 | if (do_lock) { |
| 727 | /* unlock streams */ |
| 728 | snd_pcm_group_for_each(pos, substream) { |
| 729 | s1 = snd_pcm_group_substream_entry(pos); |
| 730 | if (s1 != substream) |
| 731 | spin_unlock(&s1->self_group.lock); |
| 732 | if (s1 == s) /* end */ |
| 733 | break; |
| 734 | } |
| 735 | } |
| 736 | return res; |
| 737 | } |
| 738 | |
| 739 | /* |
| 740 | * Note: call with stream lock |
| 741 | */ |
| 742 | static int snd_pcm_action_single(struct action_ops *ops, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 743 | struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | int state) |
| 745 | { |
| 746 | int res; |
| 747 | |
| 748 | res = ops->pre_action(substream, state); |
| 749 | if (res < 0) |
| 750 | return res; |
| 751 | res = ops->do_action(substream, state); |
| 752 | if (res == 0) |
| 753 | ops->post_action(substream, state); |
| 754 | else if (ops->undo_action) |
| 755 | ops->undo_action(substream, state); |
| 756 | return res; |
| 757 | } |
| 758 | |
| 759 | /* |
| 760 | * Note: call with stream lock |
| 761 | */ |
| 762 | static int snd_pcm_action(struct action_ops *ops, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 763 | struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | int state) |
| 765 | { |
| 766 | int res; |
| 767 | |
| 768 | if (snd_pcm_stream_linked(substream)) { |
| 769 | if (!spin_trylock(&substream->group->lock)) { |
| 770 | spin_unlock(&substream->self_group.lock); |
| 771 | spin_lock(&substream->group->lock); |
| 772 | spin_lock(&substream->self_group.lock); |
| 773 | } |
| 774 | res = snd_pcm_action_group(ops, substream, state, 1); |
| 775 | spin_unlock(&substream->group->lock); |
| 776 | } else { |
| 777 | res = snd_pcm_action_single(ops, substream, state); |
| 778 | } |
| 779 | return res; |
| 780 | } |
| 781 | |
| 782 | /* |
| 783 | * Note: don't use any locks before |
| 784 | */ |
| 785 | static int snd_pcm_action_lock_irq(struct action_ops *ops, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 786 | struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | int state) |
| 788 | { |
| 789 | int res; |
| 790 | |
| 791 | read_lock_irq(&snd_pcm_link_rwlock); |
| 792 | if (snd_pcm_stream_linked(substream)) { |
| 793 | spin_lock(&substream->group->lock); |
| 794 | spin_lock(&substream->self_group.lock); |
| 795 | res = snd_pcm_action_group(ops, substream, state, 1); |
| 796 | spin_unlock(&substream->self_group.lock); |
| 797 | spin_unlock(&substream->group->lock); |
| 798 | } else { |
| 799 | spin_lock(&substream->self_group.lock); |
| 800 | res = snd_pcm_action_single(ops, substream, state); |
| 801 | spin_unlock(&substream->self_group.lock); |
| 802 | } |
| 803 | read_unlock_irq(&snd_pcm_link_rwlock); |
| 804 | return res; |
| 805 | } |
| 806 | |
| 807 | /* |
| 808 | */ |
| 809 | static int snd_pcm_action_nonatomic(struct action_ops *ops, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 810 | struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | int state) |
| 812 | { |
| 813 | int res; |
| 814 | |
| 815 | down_read(&snd_pcm_link_rwsem); |
| 816 | if (snd_pcm_stream_linked(substream)) |
| 817 | res = snd_pcm_action_group(ops, substream, state, 0); |
| 818 | else |
| 819 | res = snd_pcm_action_single(ops, substream, state); |
| 820 | up_read(&snd_pcm_link_rwsem); |
| 821 | return res; |
| 822 | } |
| 823 | |
| 824 | /* |
| 825 | * start callbacks |
| 826 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 827 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 829 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
| 831 | return -EBADFD; |
| 832 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
| 833 | !snd_pcm_playback_data(substream)) |
| 834 | return -EPIPE; |
| 835 | runtime->trigger_master = substream; |
| 836 | return 0; |
| 837 | } |
| 838 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 839 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | { |
| 841 | if (substream->runtime->trigger_master != substream) |
| 842 | return 0; |
| 843 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); |
| 844 | } |
| 845 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 846 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | { |
| 848 | if (substream->runtime->trigger_master == substream) |
| 849 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); |
| 850 | } |
| 851 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 852 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 854 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | snd_pcm_trigger_tstamp(substream); |
| 856 | runtime->status->state = state; |
| 857 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
| 858 | runtime->silence_size > 0) |
| 859 | snd_pcm_playback_silence(substream, ULONG_MAX); |
| 860 | if (runtime->sleep_min) |
| 861 | snd_pcm_tick_prepare(substream); |
| 862 | if (substream->timer) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 863 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
| 864 | &runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | } |
| 866 | |
| 867 | static struct action_ops snd_pcm_action_start = { |
| 868 | .pre_action = snd_pcm_pre_start, |
| 869 | .do_action = snd_pcm_do_start, |
| 870 | .undo_action = snd_pcm_undo_start, |
| 871 | .post_action = snd_pcm_post_start |
| 872 | }; |
| 873 | |
| 874 | /** |
| 875 | * snd_pcm_start |
Takashi Iwai | df8db93 | 2005-09-07 13:38:19 +0200 | [diff] [blame] | 876 | * @substream: the PCM substream instance |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | * |
| 878 | * Start all linked streams. |
| 879 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 880 | int snd_pcm_start(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 882 | return snd_pcm_action(&snd_pcm_action_start, substream, |
| 883 | SNDRV_PCM_STATE_RUNNING); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | } |
| 885 | |
| 886 | /* |
| 887 | * stop callbacks |
| 888 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 889 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 891 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 893 | return -EBADFD; |
| 894 | runtime->trigger_master = substream; |
| 895 | return 0; |
| 896 | } |
| 897 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 898 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | { |
| 900 | if (substream->runtime->trigger_master == substream && |
| 901 | snd_pcm_running(substream)) |
| 902 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); |
| 903 | return 0; /* unconditonally stop all substreams */ |
| 904 | } |
| 905 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 906 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 908 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | if (runtime->status->state != state) { |
| 910 | snd_pcm_trigger_tstamp(substream); |
| 911 | if (substream->timer) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 912 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
| 913 | &runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | runtime->status->state = state; |
| 915 | snd_pcm_tick_set(substream, 0); |
| 916 | } |
| 917 | wake_up(&runtime->sleep); |
| 918 | } |
| 919 | |
| 920 | static struct action_ops snd_pcm_action_stop = { |
| 921 | .pre_action = snd_pcm_pre_stop, |
| 922 | .do_action = snd_pcm_do_stop, |
| 923 | .post_action = snd_pcm_post_stop |
| 924 | }; |
| 925 | |
| 926 | /** |
| 927 | * snd_pcm_stop |
Takashi Iwai | df8db93 | 2005-09-07 13:38:19 +0200 | [diff] [blame] | 928 | * @substream: the PCM substream instance |
| 929 | * @state: PCM state after stopping the stream |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | * |
| 931 | * Try to stop all running streams in the substream group. |
| 932 | * The state of each stream is changed to the given value after that unconditionally. |
| 933 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 934 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | { |
| 936 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); |
| 937 | } |
| 938 | |
| 939 | /** |
| 940 | * snd_pcm_drain_done |
Takashi Iwai | df8db93 | 2005-09-07 13:38:19 +0200 | [diff] [blame] | 941 | * @substream: the PCM substream |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | * |
| 943 | * Stop the DMA only when the given stream is playback. |
| 944 | * The state is changed to SETUP. |
| 945 | * Unlike snd_pcm_stop(), this affects only the given stream. |
| 946 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 947 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 949 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
| 950 | SNDRV_PCM_STATE_SETUP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | } |
| 952 | |
| 953 | /* |
| 954 | * pause callbacks |
| 955 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 956 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 958 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
| 960 | return -ENOSYS; |
| 961 | if (push) { |
| 962 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) |
| 963 | return -EBADFD; |
| 964 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) |
| 965 | return -EBADFD; |
| 966 | runtime->trigger_master = substream; |
| 967 | return 0; |
| 968 | } |
| 969 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 970 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | { |
| 972 | if (substream->runtime->trigger_master != substream) |
| 973 | return 0; |
| 974 | return substream->ops->trigger(substream, |
| 975 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : |
| 976 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); |
| 977 | } |
| 978 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 979 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | { |
| 981 | if (substream->runtime->trigger_master == substream) |
| 982 | substream->ops->trigger(substream, |
| 983 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : |
| 984 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); |
| 985 | } |
| 986 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 987 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 989 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | snd_pcm_trigger_tstamp(substream); |
| 991 | if (push) { |
| 992 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; |
| 993 | if (substream->timer) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 994 | snd_timer_notify(substream->timer, |
| 995 | SNDRV_TIMER_EVENT_MPAUSE, |
| 996 | &runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | snd_pcm_tick_set(substream, 0); |
| 998 | wake_up(&runtime->sleep); |
| 999 | } else { |
| 1000 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; |
| 1001 | if (runtime->sleep_min) |
| 1002 | snd_pcm_tick_prepare(substream); |
| 1003 | if (substream->timer) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1004 | snd_timer_notify(substream->timer, |
| 1005 | SNDRV_TIMER_EVENT_MCONTINUE, |
| 1006 | &runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | } |
| 1008 | } |
| 1009 | |
| 1010 | static struct action_ops snd_pcm_action_pause = { |
| 1011 | .pre_action = snd_pcm_pre_pause, |
| 1012 | .do_action = snd_pcm_do_pause, |
| 1013 | .undo_action = snd_pcm_undo_pause, |
| 1014 | .post_action = snd_pcm_post_pause |
| 1015 | }; |
| 1016 | |
| 1017 | /* |
| 1018 | * Push/release the pause for all linked streams. |
| 1019 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1020 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | { |
| 1022 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); |
| 1023 | } |
| 1024 | |
| 1025 | #ifdef CONFIG_PM |
| 1026 | /* suspend */ |
| 1027 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1028 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1030 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
| 1032 | return -EBUSY; |
| 1033 | runtime->trigger_master = substream; |
| 1034 | return 0; |
| 1035 | } |
| 1036 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1037 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1039 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | if (runtime->trigger_master != substream) |
| 1041 | return 0; |
| 1042 | if (! snd_pcm_running(substream)) |
| 1043 | return 0; |
| 1044 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); |
| 1045 | return 0; /* suspend unconditionally */ |
| 1046 | } |
| 1047 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1048 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1050 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | snd_pcm_trigger_tstamp(substream); |
| 1052 | if (substream->timer) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1053 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
| 1054 | &runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | runtime->status->suspended_state = runtime->status->state; |
| 1056 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; |
| 1057 | snd_pcm_tick_set(substream, 0); |
| 1058 | wake_up(&runtime->sleep); |
| 1059 | } |
| 1060 | |
| 1061 | static struct action_ops snd_pcm_action_suspend = { |
| 1062 | .pre_action = snd_pcm_pre_suspend, |
| 1063 | .do_action = snd_pcm_do_suspend, |
| 1064 | .post_action = snd_pcm_post_suspend |
| 1065 | }; |
| 1066 | |
| 1067 | /** |
| 1068 | * snd_pcm_suspend |
Takashi Iwai | df8db93 | 2005-09-07 13:38:19 +0200 | [diff] [blame] | 1069 | * @substream: the PCM substream |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | * |
| 1071 | * Trigger SUSPEND to all linked streams. |
| 1072 | * After this call, all streams are changed to SUSPENDED state. |
| 1073 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1074 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | { |
| 1076 | int err; |
| 1077 | unsigned long flags; |
| 1078 | |
Takashi Iwai | 603bf52 | 2005-11-17 15:59:14 +0100 | [diff] [blame] | 1079 | if (! substream) |
| 1080 | return 0; |
| 1081 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | snd_pcm_stream_lock_irqsave(substream, flags); |
| 1083 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); |
| 1084 | snd_pcm_stream_unlock_irqrestore(substream, flags); |
| 1085 | return err; |
| 1086 | } |
| 1087 | |
| 1088 | /** |
| 1089 | * snd_pcm_suspend_all |
Takashi Iwai | df8db93 | 2005-09-07 13:38:19 +0200 | [diff] [blame] | 1090 | * @pcm: the PCM instance |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | * |
| 1092 | * Trigger SUSPEND to all substreams in the given pcm. |
| 1093 | * After this call, all streams are changed to SUSPENDED state. |
| 1094 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1095 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1097 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | int stream, err = 0; |
| 1099 | |
Takashi Iwai | 603bf52 | 2005-11-17 15:59:14 +0100 | [diff] [blame] | 1100 | if (! pcm) |
| 1101 | return 0; |
| 1102 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | for (stream = 0; stream < 2; stream++) { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1104 | for (substream = pcm->streams[stream].substream; |
| 1105 | substream; substream = substream->next) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | /* FIXME: the open/close code should lock this as well */ |
| 1107 | if (substream->runtime == NULL) |
| 1108 | continue; |
| 1109 | err = snd_pcm_suspend(substream); |
| 1110 | if (err < 0 && err != -EBUSY) |
| 1111 | return err; |
| 1112 | } |
| 1113 | } |
| 1114 | return 0; |
| 1115 | } |
| 1116 | |
| 1117 | /* resume */ |
| 1118 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1119 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1121 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
| 1123 | return -ENOSYS; |
| 1124 | runtime->trigger_master = substream; |
| 1125 | return 0; |
| 1126 | } |
| 1127 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1128 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1130 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | if (runtime->trigger_master != substream) |
| 1132 | return 0; |
| 1133 | /* DMA not running previously? */ |
| 1134 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && |
| 1135 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || |
| 1136 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) |
| 1137 | return 0; |
| 1138 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); |
| 1139 | } |
| 1140 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1141 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | { |
| 1143 | if (substream->runtime->trigger_master == substream && |
| 1144 | snd_pcm_running(substream)) |
| 1145 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); |
| 1146 | } |
| 1147 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1148 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1150 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | snd_pcm_trigger_tstamp(substream); |
| 1152 | if (substream->timer) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1153 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
| 1154 | &runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | runtime->status->state = runtime->status->suspended_state; |
| 1156 | if (runtime->sleep_min) |
| 1157 | snd_pcm_tick_prepare(substream); |
| 1158 | } |
| 1159 | |
| 1160 | static struct action_ops snd_pcm_action_resume = { |
| 1161 | .pre_action = snd_pcm_pre_resume, |
| 1162 | .do_action = snd_pcm_do_resume, |
| 1163 | .undo_action = snd_pcm_undo_resume, |
| 1164 | .post_action = snd_pcm_post_resume |
| 1165 | }; |
| 1166 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1167 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1169 | struct snd_card *card = substream->pcm->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | int res; |
| 1171 | |
| 1172 | snd_power_lock(card); |
| 1173 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile)) >= 0) |
| 1174 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
| 1175 | snd_power_unlock(card); |
| 1176 | return res; |
| 1177 | } |
| 1178 | |
| 1179 | #else |
| 1180 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1181 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | { |
| 1183 | return -ENOSYS; |
| 1184 | } |
| 1185 | |
| 1186 | #endif /* CONFIG_PM */ |
| 1187 | |
| 1188 | /* |
| 1189 | * xrun ioctl |
| 1190 | * |
| 1191 | * Change the RUNNING stream(s) to XRUN state. |
| 1192 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1193 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1195 | struct snd_card *card = substream->pcm->card; |
| 1196 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | int result; |
| 1198 | |
| 1199 | snd_power_lock(card); |
| 1200 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1201 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile); |
| 1202 | if (result < 0) |
| 1203 | goto _unlock; |
| 1204 | } |
| 1205 | |
| 1206 | snd_pcm_stream_lock_irq(substream); |
| 1207 | switch (runtime->status->state) { |
| 1208 | case SNDRV_PCM_STATE_XRUN: |
| 1209 | result = 0; /* already there */ |
| 1210 | break; |
| 1211 | case SNDRV_PCM_STATE_RUNNING: |
| 1212 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); |
| 1213 | break; |
| 1214 | default: |
| 1215 | result = -EBADFD; |
| 1216 | } |
| 1217 | snd_pcm_stream_unlock_irq(substream); |
| 1218 | _unlock: |
| 1219 | snd_power_unlock(card); |
| 1220 | return result; |
| 1221 | } |
| 1222 | |
| 1223 | /* |
| 1224 | * reset ioctl |
| 1225 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1226 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1228 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | switch (runtime->status->state) { |
| 1230 | case SNDRV_PCM_STATE_RUNNING: |
| 1231 | case SNDRV_PCM_STATE_PREPARED: |
| 1232 | case SNDRV_PCM_STATE_PAUSED: |
| 1233 | case SNDRV_PCM_STATE_SUSPENDED: |
| 1234 | return 0; |
| 1235 | default: |
| 1236 | return -EBADFD; |
| 1237 | } |
| 1238 | } |
| 1239 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1240 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1242 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
| 1244 | if (err < 0) |
| 1245 | return err; |
| 1246 | // snd_assert(runtime->status->hw_ptr < runtime->buffer_size, ); |
| 1247 | runtime->hw_ptr_base = 0; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1248 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
| 1249 | runtime->status->hw_ptr % runtime->period_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | runtime->silence_start = runtime->status->hw_ptr; |
| 1251 | runtime->silence_filled = 0; |
| 1252 | return 0; |
| 1253 | } |
| 1254 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1255 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1257 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
| 1259 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
| 1260 | runtime->silence_size > 0) |
| 1261 | snd_pcm_playback_silence(substream, ULONG_MAX); |
| 1262 | } |
| 1263 | |
| 1264 | static struct action_ops snd_pcm_action_reset = { |
| 1265 | .pre_action = snd_pcm_pre_reset, |
| 1266 | .do_action = snd_pcm_do_reset, |
| 1267 | .post_action = snd_pcm_post_reset |
| 1268 | }; |
| 1269 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1270 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | { |
| 1272 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); |
| 1273 | } |
| 1274 | |
| 1275 | /* |
| 1276 | * prepare ioctl |
| 1277 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1278 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1280 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 1282 | return -EBADFD; |
| 1283 | if (snd_pcm_running(substream)) |
| 1284 | return -EBUSY; |
| 1285 | return 0; |
| 1286 | } |
| 1287 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1288 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | { |
| 1290 | int err; |
| 1291 | err = substream->ops->prepare(substream); |
| 1292 | if (err < 0) |
| 1293 | return err; |
| 1294 | return snd_pcm_do_reset(substream, 0); |
| 1295 | } |
| 1296 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1297 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1299 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
| 1301 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; |
| 1302 | } |
| 1303 | |
| 1304 | static struct action_ops snd_pcm_action_prepare = { |
| 1305 | .pre_action = snd_pcm_pre_prepare, |
| 1306 | .do_action = snd_pcm_do_prepare, |
| 1307 | .post_action = snd_pcm_post_prepare |
| 1308 | }; |
| 1309 | |
| 1310 | /** |
| 1311 | * snd_pcm_prepare |
Takashi Iwai | df8db93 | 2005-09-07 13:38:19 +0200 | [diff] [blame] | 1312 | * @substream: the PCM substream instance |
| 1313 | * |
| 1314 | * Prepare the PCM substream to be triggerable. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1315 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1316 | int snd_pcm_prepare(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1317 | { |
| 1318 | int res; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1319 | struct snd_card *card = substream->pcm->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | |
| 1321 | snd_power_lock(card); |
| 1322 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile)) >= 0) |
| 1323 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, substream, 0); |
| 1324 | snd_power_unlock(card); |
| 1325 | return res; |
| 1326 | } |
| 1327 | |
| 1328 | /* |
| 1329 | * drain ioctl |
| 1330 | */ |
| 1331 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1332 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | { |
| 1334 | if (substream->ffile->f_flags & O_NONBLOCK) |
| 1335 | return -EAGAIN; |
| 1336 | substream->runtime->trigger_master = substream; |
| 1337 | return 0; |
| 1338 | } |
| 1339 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1340 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1342 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1344 | switch (runtime->status->state) { |
| 1345 | case SNDRV_PCM_STATE_PREPARED: |
| 1346 | /* start playback stream if possible */ |
| 1347 | if (! snd_pcm_playback_empty(substream)) { |
| 1348 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); |
| 1349 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); |
| 1350 | } |
| 1351 | break; |
| 1352 | case SNDRV_PCM_STATE_RUNNING: |
| 1353 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; |
| 1354 | break; |
| 1355 | default: |
| 1356 | break; |
| 1357 | } |
| 1358 | } else { |
| 1359 | /* stop running stream */ |
| 1360 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { |
| 1361 | int state = snd_pcm_capture_avail(runtime) > 0 ? |
| 1362 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; |
| 1363 | snd_pcm_do_stop(substream, state); |
| 1364 | snd_pcm_post_stop(substream, state); |
| 1365 | } |
| 1366 | } |
| 1367 | return 0; |
| 1368 | } |
| 1369 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1370 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | { |
| 1372 | } |
| 1373 | |
| 1374 | static struct action_ops snd_pcm_action_drain_init = { |
| 1375 | .pre_action = snd_pcm_pre_drain_init, |
| 1376 | .do_action = snd_pcm_do_drain_init, |
| 1377 | .post_action = snd_pcm_post_drain_init |
| 1378 | }; |
| 1379 | |
| 1380 | struct drain_rec { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1381 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | wait_queue_t wait; |
| 1383 | snd_pcm_uframes_t stop_threshold; |
| 1384 | }; |
| 1385 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1386 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | |
| 1388 | /* |
| 1389 | * Drain the stream(s). |
| 1390 | * When the substream is linked, sync until the draining of all playback streams |
| 1391 | * is finished. |
| 1392 | * After this call, all streams are supposed to be either SETUP or DRAINING |
| 1393 | * (capture only) state. |
| 1394 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1395 | static int snd_pcm_drain(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1397 | struct snd_card *card; |
| 1398 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1399 | struct list_head *pos; |
| 1400 | int result = 0; |
| 1401 | int i, num_drecs; |
| 1402 | struct drain_rec *drec, drec_tmp, *d; |
| 1403 | |
| 1404 | snd_assert(substream != NULL, return -ENXIO); |
| 1405 | card = substream->pcm->card; |
| 1406 | runtime = substream->runtime; |
| 1407 | |
| 1408 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 1409 | return -EBADFD; |
| 1410 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | snd_power_lock(card); |
| 1412 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1413 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile); |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1414 | if (result < 0) { |
| 1415 | snd_power_unlock(card); |
| 1416 | return result; |
| 1417 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | } |
| 1419 | |
| 1420 | /* allocate temporary record for drain sync */ |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1421 | down_read(&snd_pcm_link_rwsem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | if (snd_pcm_stream_linked(substream)) { |
| 1423 | drec = kmalloc(substream->group->count * sizeof(*drec), GFP_KERNEL); |
| 1424 | if (! drec) { |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1425 | up_read(&snd_pcm_link_rwsem); |
| 1426 | snd_power_unlock(card); |
| 1427 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | } |
| 1429 | } else |
| 1430 | drec = &drec_tmp; |
| 1431 | |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1432 | /* count only playback streams */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | num_drecs = 0; |
| 1434 | snd_pcm_group_for_each(pos, substream) { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1435 | struct snd_pcm_substream *s = snd_pcm_group_substream_entry(pos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | runtime = s->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1438 | d = &drec[num_drecs++]; |
| 1439 | d->substream = s; |
| 1440 | init_waitqueue_entry(&d->wait, current); |
| 1441 | add_wait_queue(&runtime->sleep, &d->wait); |
| 1442 | /* stop_threshold fixup to avoid endless loop when |
| 1443 | * stop_threshold > buffer_size |
| 1444 | */ |
| 1445 | d->stop_threshold = runtime->stop_threshold; |
| 1446 | if (runtime->stop_threshold > runtime->buffer_size) |
| 1447 | runtime->stop_threshold = runtime->buffer_size; |
| 1448 | } |
| 1449 | } |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1450 | up_read(&snd_pcm_link_rwsem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | if (! num_drecs) |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1452 | goto _error; |
| 1453 | |
| 1454 | snd_pcm_stream_lock_irq(substream); |
| 1455 | /* resume pause */ |
| 1456 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) |
| 1457 | snd_pcm_pause(substream, 0); |
| 1458 | |
| 1459 | /* pre-start/stop - all running streams are changed to DRAINING state */ |
| 1460 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); |
| 1461 | if (result < 0) { |
| 1462 | snd_pcm_stream_unlock_irq(substream); |
| 1463 | goto _error; |
| 1464 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1465 | |
| 1466 | for (;;) { |
| 1467 | long tout; |
| 1468 | if (signal_pending(current)) { |
| 1469 | result = -ERESTARTSYS; |
| 1470 | break; |
| 1471 | } |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1472 | /* all finished? */ |
| 1473 | for (i = 0; i < num_drecs; i++) { |
| 1474 | runtime = drec[i].substream->runtime; |
| 1475 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) |
| 1476 | break; |
| 1477 | } |
| 1478 | if (i == num_drecs) |
| 1479 | break; /* yes, all drained */ |
| 1480 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | set_current_state(TASK_INTERRUPTIBLE); |
| 1482 | snd_pcm_stream_unlock_irq(substream); |
| 1483 | snd_power_unlock(card); |
| 1484 | tout = schedule_timeout(10 * HZ); |
| 1485 | snd_power_lock(card); |
| 1486 | snd_pcm_stream_lock_irq(substream); |
| 1487 | if (tout == 0) { |
| 1488 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
| 1489 | result = -ESTRPIPE; |
| 1490 | else { |
| 1491 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); |
| 1492 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); |
| 1493 | result = -EIO; |
| 1494 | } |
| 1495 | break; |
| 1496 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | } |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1498 | |
| 1499 | snd_pcm_stream_unlock_irq(substream); |
| 1500 | |
| 1501 | _error: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | for (i = 0; i < num_drecs; i++) { |
| 1503 | d = &drec[i]; |
| 1504 | runtime = d->substream->runtime; |
| 1505 | remove_wait_queue(&runtime->sleep, &d->wait); |
| 1506 | runtime->stop_threshold = d->stop_threshold; |
| 1507 | } |
| 1508 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | if (drec != &drec_tmp) |
| 1510 | kfree(drec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | snd_power_unlock(card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | |
| 1513 | return result; |
| 1514 | } |
| 1515 | |
| 1516 | /* |
| 1517 | * drop ioctl |
| 1518 | * |
| 1519 | * Immediately put all linked substreams into SETUP state. |
| 1520 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1521 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1523 | struct snd_pcm_runtime *runtime; |
| 1524 | struct snd_card *card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1525 | int result = 0; |
| 1526 | |
| 1527 | snd_assert(substream != NULL, return -ENXIO); |
| 1528 | runtime = substream->runtime; |
| 1529 | card = substream->pcm->card; |
| 1530 | |
| 1531 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 1532 | return -EBADFD; |
| 1533 | |
| 1534 | snd_power_lock(card); |
| 1535 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1536 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile); |
| 1537 | if (result < 0) |
| 1538 | goto _unlock; |
| 1539 | } |
| 1540 | |
| 1541 | snd_pcm_stream_lock_irq(substream); |
| 1542 | /* resume pause */ |
| 1543 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) |
| 1544 | snd_pcm_pause(substream, 0); |
| 1545 | |
| 1546 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); |
| 1547 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ |
| 1548 | snd_pcm_stream_unlock_irq(substream); |
| 1549 | _unlock: |
| 1550 | snd_power_unlock(card); |
| 1551 | return result; |
| 1552 | } |
| 1553 | |
| 1554 | |
| 1555 | /* WARNING: Don't forget to fput back the file */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | static struct file *snd_pcm_file_fd(int fd) |
| 1557 | { |
| 1558 | struct file *file; |
| 1559 | struct inode *inode; |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 1560 | unsigned int minor; |
| 1561 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | file = fget(fd); |
| 1563 | if (!file) |
| 1564 | return NULL; |
| 1565 | inode = file->f_dentry->d_inode; |
| 1566 | if (!S_ISCHR(inode->i_mode) || |
| 1567 | imajor(inode) != snd_major) { |
| 1568 | fput(file); |
| 1569 | return NULL; |
| 1570 | } |
| 1571 | minor = iminor(inode); |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 1572 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
| 1573 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1574 | fput(file); |
| 1575 | return NULL; |
| 1576 | } |
| 1577 | return file; |
| 1578 | } |
| 1579 | |
| 1580 | /* |
| 1581 | * PCM link handling |
| 1582 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1583 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1584 | { |
| 1585 | int res = 0; |
| 1586 | struct file *file; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1587 | struct snd_pcm_file *pcm_file; |
| 1588 | struct snd_pcm_substream *substream1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | |
| 1590 | file = snd_pcm_file_fd(fd); |
| 1591 | if (!file) |
| 1592 | return -EBADFD; |
| 1593 | pcm_file = file->private_data; |
| 1594 | substream1 = pcm_file->substream; |
| 1595 | down_write(&snd_pcm_link_rwsem); |
| 1596 | write_lock_irq(&snd_pcm_link_rwlock); |
| 1597 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || |
| 1598 | substream->runtime->status->state != substream1->runtime->status->state) { |
| 1599 | res = -EBADFD; |
| 1600 | goto _end; |
| 1601 | } |
| 1602 | if (snd_pcm_stream_linked(substream1)) { |
| 1603 | res = -EALREADY; |
| 1604 | goto _end; |
| 1605 | } |
| 1606 | if (!snd_pcm_stream_linked(substream)) { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1607 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | if (substream->group == NULL) { |
| 1609 | res = -ENOMEM; |
| 1610 | goto _end; |
| 1611 | } |
| 1612 | spin_lock_init(&substream->group->lock); |
| 1613 | INIT_LIST_HEAD(&substream->group->substreams); |
| 1614 | list_add_tail(&substream->link_list, &substream->group->substreams); |
| 1615 | substream->group->count = 1; |
| 1616 | } |
| 1617 | list_add_tail(&substream1->link_list, &substream->group->substreams); |
| 1618 | substream->group->count++; |
| 1619 | substream1->group = substream->group; |
| 1620 | _end: |
| 1621 | write_unlock_irq(&snd_pcm_link_rwlock); |
| 1622 | up_write(&snd_pcm_link_rwsem); |
| 1623 | fput(file); |
| 1624 | return res; |
| 1625 | } |
| 1626 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1627 | static void relink_to_local(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | { |
| 1629 | substream->group = &substream->self_group; |
| 1630 | INIT_LIST_HEAD(&substream->self_group.substreams); |
| 1631 | list_add_tail(&substream->link_list, &substream->self_group.substreams); |
| 1632 | } |
| 1633 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1634 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1635 | { |
| 1636 | struct list_head *pos; |
| 1637 | int res = 0; |
| 1638 | |
| 1639 | down_write(&snd_pcm_link_rwsem); |
| 1640 | write_lock_irq(&snd_pcm_link_rwlock); |
| 1641 | if (!snd_pcm_stream_linked(substream)) { |
| 1642 | res = -EALREADY; |
| 1643 | goto _end; |
| 1644 | } |
| 1645 | list_del(&substream->link_list); |
| 1646 | substream->group->count--; |
| 1647 | if (substream->group->count == 1) { /* detach the last stream, too */ |
| 1648 | snd_pcm_group_for_each(pos, substream) { |
| 1649 | relink_to_local(snd_pcm_group_substream_entry(pos)); |
| 1650 | break; |
| 1651 | } |
| 1652 | kfree(substream->group); |
| 1653 | } |
| 1654 | relink_to_local(substream); |
| 1655 | _end: |
| 1656 | write_unlock_irq(&snd_pcm_link_rwlock); |
| 1657 | up_write(&snd_pcm_link_rwsem); |
| 1658 | return res; |
| 1659 | } |
| 1660 | |
| 1661 | /* |
| 1662 | * hw configurator |
| 1663 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1664 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
| 1665 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1666 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1667 | struct snd_interval t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1668 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
| 1669 | hw_param_interval_c(params, rule->deps[1]), &t); |
| 1670 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); |
| 1671 | } |
| 1672 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1673 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
| 1674 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1675 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1676 | struct snd_interval t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
| 1678 | hw_param_interval_c(params, rule->deps[1]), &t); |
| 1679 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); |
| 1680 | } |
| 1681 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1682 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
| 1683 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1684 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1685 | struct snd_interval t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
| 1687 | hw_param_interval_c(params, rule->deps[1]), |
| 1688 | (unsigned long) rule->private, &t); |
| 1689 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); |
| 1690 | } |
| 1691 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1692 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
| 1693 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1694 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1695 | struct snd_interval t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
| 1697 | (unsigned long) rule->private, |
| 1698 | hw_param_interval_c(params, rule->deps[1]), &t); |
| 1699 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); |
| 1700 | } |
| 1701 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1702 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
| 1703 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1704 | { |
| 1705 | unsigned int k; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1706 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
| 1707 | struct snd_mask m; |
| 1708 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | snd_mask_any(&m); |
| 1710 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { |
| 1711 | int bits; |
| 1712 | if (! snd_mask_test(mask, k)) |
| 1713 | continue; |
| 1714 | bits = snd_pcm_format_physical_width(k); |
| 1715 | if (bits <= 0) |
| 1716 | continue; /* ignore invalid formats */ |
| 1717 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) |
| 1718 | snd_mask_reset(&m, k); |
| 1719 | } |
| 1720 | return snd_mask_refine(mask, &m); |
| 1721 | } |
| 1722 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1723 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
| 1724 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1725 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1726 | struct snd_interval t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1727 | unsigned int k; |
| 1728 | t.min = UINT_MAX; |
| 1729 | t.max = 0; |
| 1730 | t.openmin = 0; |
| 1731 | t.openmax = 0; |
| 1732 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { |
| 1733 | int bits; |
| 1734 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) |
| 1735 | continue; |
| 1736 | bits = snd_pcm_format_physical_width(k); |
| 1737 | if (bits <= 0) |
| 1738 | continue; /* ignore invalid formats */ |
| 1739 | if (t.min > (unsigned)bits) |
| 1740 | t.min = bits; |
| 1741 | if (t.max < (unsigned)bits) |
| 1742 | t.max = bits; |
| 1743 | } |
| 1744 | t.integer = 1; |
| 1745 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); |
| 1746 | } |
| 1747 | |
| 1748 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 |
| 1749 | #error "Change this table" |
| 1750 | #endif |
| 1751 | |
| 1752 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, |
| 1753 | 48000, 64000, 88200, 96000, 176400, 192000 }; |
| 1754 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1755 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
| 1756 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1758 | struct snd_pcm_hardware *hw = rule->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | return snd_interval_list(hw_param_interval(params, rule->var), |
| 1760 | ARRAY_SIZE(rates), rates, hw->rates); |
| 1761 | } |
| 1762 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1763 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
| 1764 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1765 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1766 | struct snd_interval t; |
| 1767 | struct snd_pcm_substream *substream = rule->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | t.min = 0; |
| 1769 | t.max = substream->buffer_bytes_max; |
| 1770 | t.openmin = 0; |
| 1771 | t.openmax = 0; |
| 1772 | t.integer = 1; |
| 1773 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); |
| 1774 | } |
| 1775 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1776 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1777 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1778 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 1779 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | int k, err; |
| 1781 | |
| 1782 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { |
| 1783 | snd_mask_any(constrs_mask(constrs, k)); |
| 1784 | } |
| 1785 | |
| 1786 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { |
| 1787 | snd_interval_any(constrs_interval(constrs, k)); |
| 1788 | } |
| 1789 | |
| 1790 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); |
| 1791 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); |
| 1792 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); |
| 1793 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); |
| 1794 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); |
| 1795 | |
| 1796 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, |
| 1797 | snd_pcm_hw_rule_format, NULL, |
| 1798 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); |
| 1799 | if (err < 0) |
| 1800 | return err; |
| 1801 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, |
| 1802 | snd_pcm_hw_rule_sample_bits, NULL, |
| 1803 | SNDRV_PCM_HW_PARAM_FORMAT, |
| 1804 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); |
| 1805 | if (err < 0) |
| 1806 | return err; |
| 1807 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, |
| 1808 | snd_pcm_hw_rule_div, NULL, |
| 1809 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); |
| 1810 | if (err < 0) |
| 1811 | return err; |
| 1812 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, |
| 1813 | snd_pcm_hw_rule_mul, NULL, |
| 1814 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); |
| 1815 | if (err < 0) |
| 1816 | return err; |
| 1817 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, |
| 1818 | snd_pcm_hw_rule_mulkdiv, (void*) 8, |
| 1819 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); |
| 1820 | if (err < 0) |
| 1821 | return err; |
| 1822 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, |
| 1823 | snd_pcm_hw_rule_mulkdiv, (void*) 8, |
| 1824 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); |
| 1825 | if (err < 0) |
| 1826 | return err; |
| 1827 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 1828 | snd_pcm_hw_rule_div, NULL, |
| 1829 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); |
| 1830 | if (err < 0) |
| 1831 | return err; |
| 1832 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
| 1833 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, |
| 1834 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); |
| 1835 | if (err < 0) |
| 1836 | return err; |
| 1837 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
| 1838 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, |
| 1839 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); |
| 1840 | if (err < 0) |
| 1841 | return err; |
| 1842 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, |
| 1843 | snd_pcm_hw_rule_div, NULL, |
| 1844 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); |
| 1845 | if (err < 0) |
| 1846 | return err; |
| 1847 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
| 1848 | snd_pcm_hw_rule_div, NULL, |
| 1849 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); |
| 1850 | if (err < 0) |
| 1851 | return err; |
| 1852 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
| 1853 | snd_pcm_hw_rule_mulkdiv, (void*) 8, |
| 1854 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); |
| 1855 | if (err < 0) |
| 1856 | return err; |
| 1857 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
| 1858 | snd_pcm_hw_rule_muldivk, (void*) 1000000, |
| 1859 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); |
| 1860 | if (err < 0) |
| 1861 | return err; |
| 1862 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
| 1863 | snd_pcm_hw_rule_mul, NULL, |
| 1864 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); |
| 1865 | if (err < 0) |
| 1866 | return err; |
| 1867 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
| 1868 | snd_pcm_hw_rule_mulkdiv, (void*) 8, |
| 1869 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); |
| 1870 | if (err < 0) |
| 1871 | return err; |
| 1872 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
| 1873 | snd_pcm_hw_rule_muldivk, (void*) 1000000, |
| 1874 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); |
| 1875 | if (err < 0) |
| 1876 | return err; |
| 1877 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, |
| 1878 | snd_pcm_hw_rule_muldivk, (void*) 8, |
| 1879 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); |
| 1880 | if (err < 0) |
| 1881 | return err; |
| 1882 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, |
| 1883 | snd_pcm_hw_rule_muldivk, (void*) 8, |
| 1884 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); |
| 1885 | if (err < 0) |
| 1886 | return err; |
| 1887 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, |
| 1888 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, |
| 1889 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); |
| 1890 | if (err < 0) |
| 1891 | return err; |
| 1892 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, |
| 1893 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, |
| 1894 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); |
| 1895 | if (err < 0) |
| 1896 | return err; |
| 1897 | return 0; |
| 1898 | } |
| 1899 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1900 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1902 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 1903 | struct snd_pcm_hardware *hw = &runtime->hw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1904 | int err; |
| 1905 | unsigned int mask = 0; |
| 1906 | |
| 1907 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) |
| 1908 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; |
| 1909 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) |
| 1910 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; |
| 1911 | if (hw->info & SNDRV_PCM_INFO_MMAP) { |
| 1912 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) |
| 1913 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; |
| 1914 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) |
| 1915 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; |
| 1916 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) |
| 1917 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; |
| 1918 | } |
| 1919 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); |
| 1920 | snd_assert(err >= 0, return -EINVAL); |
| 1921 | |
| 1922 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); |
| 1923 | snd_assert(err >= 0, return -EINVAL); |
| 1924 | |
| 1925 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); |
| 1926 | snd_assert(err >= 0, return -EINVAL); |
| 1927 | |
| 1928 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 1929 | hw->channels_min, hw->channels_max); |
| 1930 | snd_assert(err >= 0, return -EINVAL); |
| 1931 | |
| 1932 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, |
| 1933 | hw->rate_min, hw->rate_max); |
| 1934 | snd_assert(err >= 0, return -EINVAL); |
| 1935 | |
| 1936 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, |
| 1937 | hw->period_bytes_min, hw->period_bytes_max); |
| 1938 | snd_assert(err >= 0, return -EINVAL); |
| 1939 | |
| 1940 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, |
| 1941 | hw->periods_min, hw->periods_max); |
| 1942 | snd_assert(err >= 0, return -EINVAL); |
| 1943 | |
| 1944 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, |
| 1945 | hw->period_bytes_min, hw->buffer_bytes_max); |
| 1946 | snd_assert(err >= 0, return -EINVAL); |
| 1947 | |
| 1948 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, |
| 1949 | snd_pcm_hw_rule_buffer_bytes_max, substream, |
| 1950 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); |
| 1951 | if (err < 0) |
| 1952 | return err; |
| 1953 | |
| 1954 | /* FIXME: remove */ |
| 1955 | if (runtime->dma_bytes) { |
| 1956 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); |
| 1957 | snd_assert(err >= 0, return -EINVAL); |
| 1958 | } |
| 1959 | |
| 1960 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { |
| 1961 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
| 1962 | snd_pcm_hw_rule_rate, hw, |
| 1963 | SNDRV_PCM_HW_PARAM_RATE, -1); |
| 1964 | if (err < 0) |
| 1965 | return err; |
| 1966 | } |
| 1967 | |
| 1968 | /* FIXME: this belong to lowlevel */ |
| 1969 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_TICK_TIME, |
| 1970 | 1000000 / HZ, 1000000 / HZ); |
| 1971 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); |
| 1972 | |
| 1973 | return 0; |
| 1974 | } |
| 1975 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1976 | static void snd_pcm_add_file(struct snd_pcm_str *str, |
| 1977 | struct snd_pcm_file *pcm_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1978 | { |
| 1979 | pcm_file->next = str->files; |
| 1980 | str->files = pcm_file; |
| 1981 | } |
| 1982 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1983 | static void snd_pcm_remove_file(struct snd_pcm_str *str, |
| 1984 | struct snd_pcm_file *pcm_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1985 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1986 | struct snd_pcm_file * pcm_file1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | if (str->files == pcm_file) { |
| 1988 | str->files = pcm_file->next; |
| 1989 | } else { |
| 1990 | pcm_file1 = str->files; |
| 1991 | while (pcm_file1 && pcm_file1->next != pcm_file) |
| 1992 | pcm_file1 = pcm_file1->next; |
| 1993 | if (pcm_file1 != NULL) |
| 1994 | pcm_file1->next = pcm_file->next; |
| 1995 | } |
| 1996 | } |
| 1997 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1998 | static int snd_pcm_release_file(struct snd_pcm_file * pcm_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1999 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2000 | struct snd_pcm_substream *substream; |
| 2001 | struct snd_pcm_runtime *runtime; |
| 2002 | struct snd_pcm_str * str; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2003 | |
| 2004 | snd_assert(pcm_file != NULL, return -ENXIO); |
| 2005 | substream = pcm_file->substream; |
| 2006 | snd_assert(substream != NULL, return -ENXIO); |
| 2007 | runtime = substream->runtime; |
| 2008 | str = substream->pstr; |
| 2009 | snd_pcm_unlink(substream); |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 2010 | if (substream->ffile != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2011 | if (substream->ops->hw_free != NULL) |
| 2012 | substream->ops->hw_free(substream); |
| 2013 | substream->ops->close(substream); |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 2014 | substream->ffile = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2015 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2016 | snd_pcm_remove_file(str, pcm_file); |
| 2017 | snd_pcm_release_substream(substream); |
| 2018 | kfree(pcm_file); |
| 2019 | return 0; |
| 2020 | } |
| 2021 | |
| 2022 | static int snd_pcm_open_file(struct file *file, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2023 | struct snd_pcm *pcm, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2024 | int stream, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2025 | struct snd_pcm_file **rpcm_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2026 | { |
| 2027 | int err = 0; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2028 | struct snd_pcm_file *pcm_file; |
| 2029 | struct snd_pcm_substream *substream; |
| 2030 | struct snd_pcm_str *str; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2031 | |
| 2032 | snd_assert(rpcm_file != NULL, return -EINVAL); |
| 2033 | *rpcm_file = NULL; |
| 2034 | |
Takashi Iwai | ca2c096 | 2005-09-09 14:20:23 +0200 | [diff] [blame] | 2035 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2036 | if (pcm_file == NULL) { |
| 2037 | return -ENOMEM; |
| 2038 | } |
| 2039 | |
| 2040 | if ((err = snd_pcm_open_substream(pcm, stream, &substream)) < 0) { |
| 2041 | kfree(pcm_file); |
| 2042 | return err; |
| 2043 | } |
| 2044 | |
| 2045 | str = substream->pstr; |
| 2046 | substream->file = pcm_file; |
| 2047 | substream->no_mmap_ctrl = 0; |
| 2048 | |
| 2049 | pcm_file->substream = substream; |
| 2050 | |
| 2051 | snd_pcm_add_file(str, pcm_file); |
| 2052 | |
| 2053 | err = snd_pcm_hw_constraints_init(substream); |
| 2054 | if (err < 0) { |
| 2055 | snd_printd("snd_pcm_hw_constraints_init failed\n"); |
| 2056 | snd_pcm_release_file(pcm_file); |
| 2057 | return err; |
| 2058 | } |
| 2059 | |
| 2060 | if ((err = substream->ops->open(substream)) < 0) { |
| 2061 | snd_pcm_release_file(pcm_file); |
| 2062 | return err; |
| 2063 | } |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 2064 | substream->ffile = file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | |
| 2066 | err = snd_pcm_hw_constraints_complete(substream); |
| 2067 | if (err < 0) { |
| 2068 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | snd_pcm_release_file(pcm_file); |
| 2070 | return err; |
| 2071 | } |
| 2072 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2073 | file->private_data = pcm_file; |
| 2074 | *rpcm_file = pcm_file; |
| 2075 | return 0; |
| 2076 | } |
| 2077 | |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 2078 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2079 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2080 | struct snd_pcm *pcm; |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 2081 | |
| 2082 | pcm = snd_lookup_minor_data(iminor(inode), |
| 2083 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); |
| 2084 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); |
| 2085 | } |
| 2086 | |
| 2087 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) |
| 2088 | { |
| 2089 | struct snd_pcm *pcm; |
| 2090 | |
| 2091 | pcm = snd_lookup_minor_data(iminor(inode), |
| 2092 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); |
| 2093 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); |
| 2094 | } |
| 2095 | |
| 2096 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) |
| 2097 | { |
| 2098 | int err; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2099 | struct snd_pcm_file *pcm_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2100 | wait_queue_t wait; |
| 2101 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2102 | if (pcm == NULL) { |
| 2103 | err = -ENODEV; |
| 2104 | goto __error1; |
| 2105 | } |
| 2106 | err = snd_card_file_add(pcm->card, file); |
| 2107 | if (err < 0) |
| 2108 | goto __error1; |
| 2109 | if (!try_module_get(pcm->card->module)) { |
| 2110 | err = -EFAULT; |
| 2111 | goto __error2; |
| 2112 | } |
| 2113 | init_waitqueue_entry(&wait, current); |
| 2114 | add_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2115 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2116 | while (1) { |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 2117 | err = snd_pcm_open_file(file, pcm, stream, &pcm_file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | if (err >= 0) |
| 2119 | break; |
| 2120 | if (err == -EAGAIN) { |
| 2121 | if (file->f_flags & O_NONBLOCK) { |
| 2122 | err = -EBUSY; |
| 2123 | break; |
| 2124 | } |
| 2125 | } else |
| 2126 | break; |
| 2127 | set_current_state(TASK_INTERRUPTIBLE); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2128 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2129 | schedule(); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2130 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | if (signal_pending(current)) { |
| 2132 | err = -ERESTARTSYS; |
| 2133 | break; |
| 2134 | } |
| 2135 | } |
| 2136 | remove_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2137 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2138 | if (err < 0) |
| 2139 | goto __error; |
| 2140 | return err; |
| 2141 | |
| 2142 | __error: |
| 2143 | module_put(pcm->card->module); |
| 2144 | __error2: |
| 2145 | snd_card_file_remove(pcm->card, file); |
| 2146 | __error1: |
| 2147 | return err; |
| 2148 | } |
| 2149 | |
| 2150 | static int snd_pcm_release(struct inode *inode, struct file *file) |
| 2151 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2152 | struct snd_pcm *pcm; |
| 2153 | struct snd_pcm_substream *substream; |
| 2154 | struct snd_pcm_file *pcm_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2155 | |
| 2156 | pcm_file = file->private_data; |
| 2157 | substream = pcm_file->substream; |
| 2158 | snd_assert(substream != NULL, return -ENXIO); |
| 2159 | snd_assert(!atomic_read(&substream->runtime->mmap_count), ); |
| 2160 | pcm = substream->pcm; |
| 2161 | snd_pcm_drop(substream); |
| 2162 | fasync_helper(-1, file, 0, &substream->runtime->fasync); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2163 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2164 | snd_pcm_release_file(pcm_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2165 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2166 | wake_up(&pcm->open_wait); |
| 2167 | module_put(pcm->card->module); |
| 2168 | snd_card_file_remove(pcm->card, file); |
| 2169 | return 0; |
| 2170 | } |
| 2171 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2172 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
| 2173 | snd_pcm_uframes_t frames) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2174 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2175 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2176 | snd_pcm_sframes_t appl_ptr; |
| 2177 | snd_pcm_sframes_t ret; |
| 2178 | snd_pcm_sframes_t hw_avail; |
| 2179 | |
| 2180 | if (frames == 0) |
| 2181 | return 0; |
| 2182 | |
| 2183 | snd_pcm_stream_lock_irq(substream); |
| 2184 | switch (runtime->status->state) { |
| 2185 | case SNDRV_PCM_STATE_PREPARED: |
| 2186 | break; |
| 2187 | case SNDRV_PCM_STATE_DRAINING: |
| 2188 | case SNDRV_PCM_STATE_RUNNING: |
| 2189 | if (snd_pcm_update_hw_ptr(substream) >= 0) |
| 2190 | break; |
| 2191 | /* Fall through */ |
| 2192 | case SNDRV_PCM_STATE_XRUN: |
| 2193 | ret = -EPIPE; |
| 2194 | goto __end; |
| 2195 | default: |
| 2196 | ret = -EBADFD; |
| 2197 | goto __end; |
| 2198 | } |
| 2199 | |
| 2200 | hw_avail = snd_pcm_playback_hw_avail(runtime); |
| 2201 | if (hw_avail <= 0) { |
| 2202 | ret = 0; |
| 2203 | goto __end; |
| 2204 | } |
| 2205 | if (frames > (snd_pcm_uframes_t)hw_avail) |
| 2206 | frames = hw_avail; |
| 2207 | else |
| 2208 | frames -= frames % runtime->xfer_align; |
| 2209 | appl_ptr = runtime->control->appl_ptr - frames; |
| 2210 | if (appl_ptr < 0) |
| 2211 | appl_ptr += runtime->boundary; |
| 2212 | runtime->control->appl_ptr = appl_ptr; |
| 2213 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && |
| 2214 | runtime->sleep_min) |
| 2215 | snd_pcm_tick_prepare(substream); |
| 2216 | ret = frames; |
| 2217 | __end: |
| 2218 | snd_pcm_stream_unlock_irq(substream); |
| 2219 | return ret; |
| 2220 | } |
| 2221 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2222 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
| 2223 | snd_pcm_uframes_t frames) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2224 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2225 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2226 | snd_pcm_sframes_t appl_ptr; |
| 2227 | snd_pcm_sframes_t ret; |
| 2228 | snd_pcm_sframes_t hw_avail; |
| 2229 | |
| 2230 | if (frames == 0) |
| 2231 | return 0; |
| 2232 | |
| 2233 | snd_pcm_stream_lock_irq(substream); |
| 2234 | switch (runtime->status->state) { |
| 2235 | case SNDRV_PCM_STATE_PREPARED: |
| 2236 | case SNDRV_PCM_STATE_DRAINING: |
| 2237 | break; |
| 2238 | case SNDRV_PCM_STATE_RUNNING: |
| 2239 | if (snd_pcm_update_hw_ptr(substream) >= 0) |
| 2240 | break; |
| 2241 | /* Fall through */ |
| 2242 | case SNDRV_PCM_STATE_XRUN: |
| 2243 | ret = -EPIPE; |
| 2244 | goto __end; |
| 2245 | default: |
| 2246 | ret = -EBADFD; |
| 2247 | goto __end; |
| 2248 | } |
| 2249 | |
| 2250 | hw_avail = snd_pcm_capture_hw_avail(runtime); |
| 2251 | if (hw_avail <= 0) { |
| 2252 | ret = 0; |
| 2253 | goto __end; |
| 2254 | } |
| 2255 | if (frames > (snd_pcm_uframes_t)hw_avail) |
| 2256 | frames = hw_avail; |
| 2257 | else |
| 2258 | frames -= frames % runtime->xfer_align; |
| 2259 | appl_ptr = runtime->control->appl_ptr - frames; |
| 2260 | if (appl_ptr < 0) |
| 2261 | appl_ptr += runtime->boundary; |
| 2262 | runtime->control->appl_ptr = appl_ptr; |
| 2263 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && |
| 2264 | runtime->sleep_min) |
| 2265 | snd_pcm_tick_prepare(substream); |
| 2266 | ret = frames; |
| 2267 | __end: |
| 2268 | snd_pcm_stream_unlock_irq(substream); |
| 2269 | return ret; |
| 2270 | } |
| 2271 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2272 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
| 2273 | snd_pcm_uframes_t frames) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2274 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2275 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2276 | snd_pcm_sframes_t appl_ptr; |
| 2277 | snd_pcm_sframes_t ret; |
| 2278 | snd_pcm_sframes_t avail; |
| 2279 | |
| 2280 | if (frames == 0) |
| 2281 | return 0; |
| 2282 | |
| 2283 | snd_pcm_stream_lock_irq(substream); |
| 2284 | switch (runtime->status->state) { |
| 2285 | case SNDRV_PCM_STATE_PREPARED: |
| 2286 | case SNDRV_PCM_STATE_PAUSED: |
| 2287 | break; |
| 2288 | case SNDRV_PCM_STATE_DRAINING: |
| 2289 | case SNDRV_PCM_STATE_RUNNING: |
| 2290 | if (snd_pcm_update_hw_ptr(substream) >= 0) |
| 2291 | break; |
| 2292 | /* Fall through */ |
| 2293 | case SNDRV_PCM_STATE_XRUN: |
| 2294 | ret = -EPIPE; |
| 2295 | goto __end; |
| 2296 | default: |
| 2297 | ret = -EBADFD; |
| 2298 | goto __end; |
| 2299 | } |
| 2300 | |
| 2301 | avail = snd_pcm_playback_avail(runtime); |
| 2302 | if (avail <= 0) { |
| 2303 | ret = 0; |
| 2304 | goto __end; |
| 2305 | } |
| 2306 | if (frames > (snd_pcm_uframes_t)avail) |
| 2307 | frames = avail; |
| 2308 | else |
| 2309 | frames -= frames % runtime->xfer_align; |
| 2310 | appl_ptr = runtime->control->appl_ptr + frames; |
| 2311 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) |
| 2312 | appl_ptr -= runtime->boundary; |
| 2313 | runtime->control->appl_ptr = appl_ptr; |
| 2314 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && |
| 2315 | runtime->sleep_min) |
| 2316 | snd_pcm_tick_prepare(substream); |
| 2317 | ret = frames; |
| 2318 | __end: |
| 2319 | snd_pcm_stream_unlock_irq(substream); |
| 2320 | return ret; |
| 2321 | } |
| 2322 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2323 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
| 2324 | snd_pcm_uframes_t frames) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2325 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2326 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2327 | snd_pcm_sframes_t appl_ptr; |
| 2328 | snd_pcm_sframes_t ret; |
| 2329 | snd_pcm_sframes_t avail; |
| 2330 | |
| 2331 | if (frames == 0) |
| 2332 | return 0; |
| 2333 | |
| 2334 | snd_pcm_stream_lock_irq(substream); |
| 2335 | switch (runtime->status->state) { |
| 2336 | case SNDRV_PCM_STATE_PREPARED: |
| 2337 | case SNDRV_PCM_STATE_DRAINING: |
| 2338 | case SNDRV_PCM_STATE_PAUSED: |
| 2339 | break; |
| 2340 | case SNDRV_PCM_STATE_RUNNING: |
| 2341 | if (snd_pcm_update_hw_ptr(substream) >= 0) |
| 2342 | break; |
| 2343 | /* Fall through */ |
| 2344 | case SNDRV_PCM_STATE_XRUN: |
| 2345 | ret = -EPIPE; |
| 2346 | goto __end; |
| 2347 | default: |
| 2348 | ret = -EBADFD; |
| 2349 | goto __end; |
| 2350 | } |
| 2351 | |
| 2352 | avail = snd_pcm_capture_avail(runtime); |
| 2353 | if (avail <= 0) { |
| 2354 | ret = 0; |
| 2355 | goto __end; |
| 2356 | } |
| 2357 | if (frames > (snd_pcm_uframes_t)avail) |
| 2358 | frames = avail; |
| 2359 | else |
| 2360 | frames -= frames % runtime->xfer_align; |
| 2361 | appl_ptr = runtime->control->appl_ptr + frames; |
| 2362 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) |
| 2363 | appl_ptr -= runtime->boundary; |
| 2364 | runtime->control->appl_ptr = appl_ptr; |
| 2365 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && |
| 2366 | runtime->sleep_min) |
| 2367 | snd_pcm_tick_prepare(substream); |
| 2368 | ret = frames; |
| 2369 | __end: |
| 2370 | snd_pcm_stream_unlock_irq(substream); |
| 2371 | return ret; |
| 2372 | } |
| 2373 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2374 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2375 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2376 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2377 | int err; |
| 2378 | |
| 2379 | snd_pcm_stream_lock_irq(substream); |
| 2380 | switch (runtime->status->state) { |
| 2381 | case SNDRV_PCM_STATE_DRAINING: |
| 2382 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
| 2383 | goto __badfd; |
| 2384 | case SNDRV_PCM_STATE_RUNNING: |
| 2385 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) |
| 2386 | break; |
| 2387 | /* Fall through */ |
| 2388 | case SNDRV_PCM_STATE_PREPARED: |
| 2389 | case SNDRV_PCM_STATE_SUSPENDED: |
| 2390 | err = 0; |
| 2391 | break; |
| 2392 | case SNDRV_PCM_STATE_XRUN: |
| 2393 | err = -EPIPE; |
| 2394 | break; |
| 2395 | default: |
| 2396 | __badfd: |
| 2397 | err = -EBADFD; |
| 2398 | break; |
| 2399 | } |
| 2400 | snd_pcm_stream_unlock_irq(substream); |
| 2401 | return err; |
| 2402 | } |
| 2403 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2404 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
| 2405 | snd_pcm_sframes_t __user *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2406 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2407 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2408 | int err; |
| 2409 | snd_pcm_sframes_t n = 0; |
| 2410 | |
| 2411 | snd_pcm_stream_lock_irq(substream); |
| 2412 | switch (runtime->status->state) { |
| 2413 | case SNDRV_PCM_STATE_DRAINING: |
| 2414 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
| 2415 | goto __badfd; |
| 2416 | case SNDRV_PCM_STATE_RUNNING: |
| 2417 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) |
| 2418 | break; |
| 2419 | /* Fall through */ |
| 2420 | case SNDRV_PCM_STATE_PREPARED: |
| 2421 | case SNDRV_PCM_STATE_SUSPENDED: |
| 2422 | err = 0; |
| 2423 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 2424 | n = snd_pcm_playback_hw_avail(runtime); |
| 2425 | else |
| 2426 | n = snd_pcm_capture_avail(runtime); |
| 2427 | break; |
| 2428 | case SNDRV_PCM_STATE_XRUN: |
| 2429 | err = -EPIPE; |
| 2430 | break; |
| 2431 | default: |
| 2432 | __badfd: |
| 2433 | err = -EBADFD; |
| 2434 | break; |
| 2435 | } |
| 2436 | snd_pcm_stream_unlock_irq(substream); |
| 2437 | if (!err) |
| 2438 | if (put_user(n, res)) |
| 2439 | err = -EFAULT; |
| 2440 | return err; |
| 2441 | } |
| 2442 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2443 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
| 2444 | struct snd_pcm_sync_ptr __user *_sync_ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2445 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2446 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 2447 | struct snd_pcm_sync_ptr sync_ptr; |
| 2448 | volatile struct snd_pcm_mmap_status *status; |
| 2449 | volatile struct snd_pcm_mmap_control *control; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2450 | int err; |
| 2451 | |
| 2452 | memset(&sync_ptr, 0, sizeof(sync_ptr)); |
| 2453 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) |
| 2454 | return -EFAULT; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2455 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2456 | return -EFAULT; |
| 2457 | status = runtime->status; |
| 2458 | control = runtime->control; |
| 2459 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { |
| 2460 | err = snd_pcm_hwsync(substream); |
| 2461 | if (err < 0) |
| 2462 | return err; |
| 2463 | } |
| 2464 | snd_pcm_stream_lock_irq(substream); |
| 2465 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) |
| 2466 | control->appl_ptr = sync_ptr.c.control.appl_ptr; |
| 2467 | else |
| 2468 | sync_ptr.c.control.appl_ptr = control->appl_ptr; |
| 2469 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) |
| 2470 | control->avail_min = sync_ptr.c.control.avail_min; |
| 2471 | else |
| 2472 | sync_ptr.c.control.avail_min = control->avail_min; |
| 2473 | sync_ptr.s.status.state = status->state; |
| 2474 | sync_ptr.s.status.hw_ptr = status->hw_ptr; |
| 2475 | sync_ptr.s.status.tstamp = status->tstamp; |
| 2476 | sync_ptr.s.status.suspended_state = status->suspended_state; |
| 2477 | snd_pcm_stream_unlock_irq(substream); |
| 2478 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) |
| 2479 | return -EFAULT; |
| 2480 | return 0; |
| 2481 | } |
| 2482 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2483 | static int snd_pcm_playback_ioctl1(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2484 | unsigned int cmd, void __user *arg); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2485 | static int snd_pcm_capture_ioctl1(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2486 | unsigned int cmd, void __user *arg); |
| 2487 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2488 | static int snd_pcm_common_ioctl1(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2489 | unsigned int cmd, void __user *arg) |
| 2490 | { |
| 2491 | snd_assert(substream != NULL, return -ENXIO); |
| 2492 | |
| 2493 | switch (cmd) { |
| 2494 | case SNDRV_PCM_IOCTL_PVERSION: |
| 2495 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; |
| 2496 | case SNDRV_PCM_IOCTL_INFO: |
| 2497 | return snd_pcm_info_user(substream, arg); |
Takashi Iwai | 07799e7 | 2005-10-10 11:49:49 +0200 | [diff] [blame] | 2498 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2499 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2500 | case SNDRV_PCM_IOCTL_HW_REFINE: |
| 2501 | return snd_pcm_hw_refine_user(substream, arg); |
| 2502 | case SNDRV_PCM_IOCTL_HW_PARAMS: |
| 2503 | return snd_pcm_hw_params_user(substream, arg); |
| 2504 | case SNDRV_PCM_IOCTL_HW_FREE: |
| 2505 | return snd_pcm_hw_free(substream); |
| 2506 | case SNDRV_PCM_IOCTL_SW_PARAMS: |
| 2507 | return snd_pcm_sw_params_user(substream, arg); |
| 2508 | case SNDRV_PCM_IOCTL_STATUS: |
| 2509 | return snd_pcm_status_user(substream, arg); |
| 2510 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: |
| 2511 | return snd_pcm_channel_info_user(substream, arg); |
| 2512 | case SNDRV_PCM_IOCTL_PREPARE: |
| 2513 | return snd_pcm_prepare(substream); |
| 2514 | case SNDRV_PCM_IOCTL_RESET: |
| 2515 | return snd_pcm_reset(substream); |
| 2516 | case SNDRV_PCM_IOCTL_START: |
| 2517 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); |
| 2518 | case SNDRV_PCM_IOCTL_LINK: |
| 2519 | return snd_pcm_link(substream, (int)(unsigned long) arg); |
| 2520 | case SNDRV_PCM_IOCTL_UNLINK: |
| 2521 | return snd_pcm_unlink(substream); |
| 2522 | case SNDRV_PCM_IOCTL_RESUME: |
| 2523 | return snd_pcm_resume(substream); |
| 2524 | case SNDRV_PCM_IOCTL_XRUN: |
| 2525 | return snd_pcm_xrun(substream); |
| 2526 | case SNDRV_PCM_IOCTL_HWSYNC: |
| 2527 | return snd_pcm_hwsync(substream); |
| 2528 | case SNDRV_PCM_IOCTL_DELAY: |
| 2529 | return snd_pcm_delay(substream, arg); |
| 2530 | case SNDRV_PCM_IOCTL_SYNC_PTR: |
| 2531 | return snd_pcm_sync_ptr(substream, arg); |
Takashi Iwai | 59d4858 | 2005-12-01 10:51:58 +0100 | [diff] [blame] | 2532 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2533 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
| 2534 | return snd_pcm_hw_refine_old_user(substream, arg); |
| 2535 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: |
| 2536 | return snd_pcm_hw_params_old_user(substream, arg); |
Takashi Iwai | 59d4858 | 2005-12-01 10:51:58 +0100 | [diff] [blame] | 2537 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2538 | case SNDRV_PCM_IOCTL_DRAIN: |
| 2539 | return snd_pcm_drain(substream); |
| 2540 | case SNDRV_PCM_IOCTL_DROP: |
| 2541 | return snd_pcm_drop(substream); |
Takashi Iwai | e661d0d | 2006-02-21 14:14:50 +0100 | [diff] [blame] | 2542 | case SNDRV_PCM_IOCTL_PAUSE: |
| 2543 | { |
| 2544 | int res; |
| 2545 | snd_pcm_stream_lock_irq(substream); |
| 2546 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); |
| 2547 | snd_pcm_stream_unlock_irq(substream); |
| 2548 | return res; |
| 2549 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2550 | } |
| 2551 | snd_printd("unknown ioctl = 0x%x\n", cmd); |
| 2552 | return -ENOTTY; |
| 2553 | } |
| 2554 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2555 | static int snd_pcm_playback_ioctl1(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2556 | unsigned int cmd, void __user *arg) |
| 2557 | { |
| 2558 | snd_assert(substream != NULL, return -ENXIO); |
| 2559 | snd_assert(substream->stream == SNDRV_PCM_STREAM_PLAYBACK, return -EINVAL); |
| 2560 | switch (cmd) { |
| 2561 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: |
| 2562 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2563 | struct snd_xferi xferi; |
| 2564 | struct snd_xferi __user *_xferi = arg; |
| 2565 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2566 | snd_pcm_sframes_t result; |
| 2567 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 2568 | return -EBADFD; |
| 2569 | if (put_user(0, &_xferi->result)) |
| 2570 | return -EFAULT; |
| 2571 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) |
| 2572 | return -EFAULT; |
| 2573 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); |
| 2574 | __put_user(result, &_xferi->result); |
| 2575 | return result < 0 ? result : 0; |
| 2576 | } |
| 2577 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: |
| 2578 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2579 | struct snd_xfern xfern; |
| 2580 | struct snd_xfern __user *_xfern = arg; |
| 2581 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2582 | void __user **bufs; |
| 2583 | snd_pcm_sframes_t result; |
| 2584 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 2585 | return -EBADFD; |
| 2586 | if (runtime->channels > 128) |
| 2587 | return -EINVAL; |
| 2588 | if (put_user(0, &_xfern->result)) |
| 2589 | return -EFAULT; |
| 2590 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) |
| 2591 | return -EFAULT; |
| 2592 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); |
| 2593 | if (bufs == NULL) |
| 2594 | return -ENOMEM; |
| 2595 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { |
| 2596 | kfree(bufs); |
| 2597 | return -EFAULT; |
| 2598 | } |
| 2599 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); |
| 2600 | kfree(bufs); |
| 2601 | __put_user(result, &_xfern->result); |
| 2602 | return result < 0 ? result : 0; |
| 2603 | } |
| 2604 | case SNDRV_PCM_IOCTL_REWIND: |
| 2605 | { |
| 2606 | snd_pcm_uframes_t frames; |
| 2607 | snd_pcm_uframes_t __user *_frames = arg; |
| 2608 | snd_pcm_sframes_t result; |
| 2609 | if (get_user(frames, _frames)) |
| 2610 | return -EFAULT; |
| 2611 | if (put_user(0, _frames)) |
| 2612 | return -EFAULT; |
| 2613 | result = snd_pcm_playback_rewind(substream, frames); |
| 2614 | __put_user(result, _frames); |
| 2615 | return result < 0 ? result : 0; |
| 2616 | } |
| 2617 | case SNDRV_PCM_IOCTL_FORWARD: |
| 2618 | { |
| 2619 | snd_pcm_uframes_t frames; |
| 2620 | snd_pcm_uframes_t __user *_frames = arg; |
| 2621 | snd_pcm_sframes_t result; |
| 2622 | if (get_user(frames, _frames)) |
| 2623 | return -EFAULT; |
| 2624 | if (put_user(0, _frames)) |
| 2625 | return -EFAULT; |
| 2626 | result = snd_pcm_playback_forward(substream, frames); |
| 2627 | __put_user(result, _frames); |
| 2628 | return result < 0 ? result : 0; |
| 2629 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2630 | } |
| 2631 | return snd_pcm_common_ioctl1(substream, cmd, arg); |
| 2632 | } |
| 2633 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2634 | static int snd_pcm_capture_ioctl1(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2635 | unsigned int cmd, void __user *arg) |
| 2636 | { |
| 2637 | snd_assert(substream != NULL, return -ENXIO); |
| 2638 | snd_assert(substream->stream == SNDRV_PCM_STREAM_CAPTURE, return -EINVAL); |
| 2639 | switch (cmd) { |
| 2640 | case SNDRV_PCM_IOCTL_READI_FRAMES: |
| 2641 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2642 | struct snd_xferi xferi; |
| 2643 | struct snd_xferi __user *_xferi = arg; |
| 2644 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2645 | snd_pcm_sframes_t result; |
| 2646 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 2647 | return -EBADFD; |
| 2648 | if (put_user(0, &_xferi->result)) |
| 2649 | return -EFAULT; |
| 2650 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) |
| 2651 | return -EFAULT; |
| 2652 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); |
| 2653 | __put_user(result, &_xferi->result); |
| 2654 | return result < 0 ? result : 0; |
| 2655 | } |
| 2656 | case SNDRV_PCM_IOCTL_READN_FRAMES: |
| 2657 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2658 | struct snd_xfern xfern; |
| 2659 | struct snd_xfern __user *_xfern = arg; |
| 2660 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2661 | void *bufs; |
| 2662 | snd_pcm_sframes_t result; |
| 2663 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 2664 | return -EBADFD; |
| 2665 | if (runtime->channels > 128) |
| 2666 | return -EINVAL; |
| 2667 | if (put_user(0, &_xfern->result)) |
| 2668 | return -EFAULT; |
| 2669 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) |
| 2670 | return -EFAULT; |
| 2671 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); |
| 2672 | if (bufs == NULL) |
| 2673 | return -ENOMEM; |
| 2674 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { |
| 2675 | kfree(bufs); |
| 2676 | return -EFAULT; |
| 2677 | } |
| 2678 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); |
| 2679 | kfree(bufs); |
| 2680 | __put_user(result, &_xfern->result); |
| 2681 | return result < 0 ? result : 0; |
| 2682 | } |
| 2683 | case SNDRV_PCM_IOCTL_REWIND: |
| 2684 | { |
| 2685 | snd_pcm_uframes_t frames; |
| 2686 | snd_pcm_uframes_t __user *_frames = arg; |
| 2687 | snd_pcm_sframes_t result; |
| 2688 | if (get_user(frames, _frames)) |
| 2689 | return -EFAULT; |
| 2690 | if (put_user(0, _frames)) |
| 2691 | return -EFAULT; |
| 2692 | result = snd_pcm_capture_rewind(substream, frames); |
| 2693 | __put_user(result, _frames); |
| 2694 | return result < 0 ? result : 0; |
| 2695 | } |
| 2696 | case SNDRV_PCM_IOCTL_FORWARD: |
| 2697 | { |
| 2698 | snd_pcm_uframes_t frames; |
| 2699 | snd_pcm_uframes_t __user *_frames = arg; |
| 2700 | snd_pcm_sframes_t result; |
| 2701 | if (get_user(frames, _frames)) |
| 2702 | return -EFAULT; |
| 2703 | if (put_user(0, _frames)) |
| 2704 | return -EFAULT; |
| 2705 | result = snd_pcm_capture_forward(substream, frames); |
| 2706 | __put_user(result, _frames); |
| 2707 | return result < 0 ? result : 0; |
| 2708 | } |
| 2709 | } |
| 2710 | return snd_pcm_common_ioctl1(substream, cmd, arg); |
| 2711 | } |
| 2712 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2713 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
| 2714 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2715 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2716 | struct snd_pcm_file *pcm_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2717 | |
| 2718 | pcm_file = file->private_data; |
| 2719 | |
| 2720 | if (((cmd >> 8) & 0xff) != 'A') |
| 2721 | return -ENOTTY; |
| 2722 | |
| 2723 | return snd_pcm_playback_ioctl1(pcm_file->substream, cmd, (void __user *)arg); |
| 2724 | } |
| 2725 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2726 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
| 2727 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2728 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2729 | struct snd_pcm_file *pcm_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2730 | |
| 2731 | pcm_file = file->private_data; |
| 2732 | |
| 2733 | if (((cmd >> 8) & 0xff) != 'A') |
| 2734 | return -ENOTTY; |
| 2735 | |
| 2736 | return snd_pcm_capture_ioctl1(pcm_file->substream, cmd, (void __user *)arg); |
| 2737 | } |
| 2738 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2739 | int snd_pcm_kernel_playback_ioctl(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2740 | unsigned int cmd, void *arg) |
| 2741 | { |
| 2742 | mm_segment_t fs; |
| 2743 | int result; |
| 2744 | |
| 2745 | fs = snd_enter_user(); |
| 2746 | result = snd_pcm_playback_ioctl1(substream, cmd, (void __user *)arg); |
| 2747 | snd_leave_user(fs); |
| 2748 | return result; |
| 2749 | } |
| 2750 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2751 | int snd_pcm_kernel_capture_ioctl(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2752 | unsigned int cmd, void *arg) |
| 2753 | { |
| 2754 | mm_segment_t fs; |
| 2755 | int result; |
| 2756 | |
| 2757 | fs = snd_enter_user(); |
| 2758 | result = snd_pcm_capture_ioctl1(substream, cmd, (void __user *)arg); |
| 2759 | snd_leave_user(fs); |
| 2760 | return result; |
| 2761 | } |
| 2762 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2763 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2764 | unsigned int cmd, void *arg) |
| 2765 | { |
| 2766 | switch (substream->stream) { |
| 2767 | case SNDRV_PCM_STREAM_PLAYBACK: |
| 2768 | return snd_pcm_kernel_playback_ioctl(substream, cmd, arg); |
| 2769 | case SNDRV_PCM_STREAM_CAPTURE: |
| 2770 | return snd_pcm_kernel_capture_ioctl(substream, cmd, arg); |
| 2771 | default: |
| 2772 | return -EINVAL; |
| 2773 | } |
| 2774 | } |
| 2775 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2776 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
| 2777 | loff_t * offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2778 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2779 | struct snd_pcm_file *pcm_file; |
| 2780 | struct snd_pcm_substream *substream; |
| 2781 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2782 | snd_pcm_sframes_t result; |
| 2783 | |
| 2784 | pcm_file = file->private_data; |
| 2785 | substream = pcm_file->substream; |
| 2786 | snd_assert(substream != NULL, return -ENXIO); |
| 2787 | runtime = substream->runtime; |
| 2788 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 2789 | return -EBADFD; |
| 2790 | if (!frame_aligned(runtime, count)) |
| 2791 | return -EINVAL; |
| 2792 | count = bytes_to_frames(runtime, count); |
| 2793 | result = snd_pcm_lib_read(substream, buf, count); |
| 2794 | if (result > 0) |
| 2795 | result = frames_to_bytes(runtime, result); |
| 2796 | return result; |
| 2797 | } |
| 2798 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2799 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
| 2800 | size_t count, loff_t * offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2801 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2802 | struct snd_pcm_file *pcm_file; |
| 2803 | struct snd_pcm_substream *substream; |
| 2804 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2805 | snd_pcm_sframes_t result; |
| 2806 | |
| 2807 | pcm_file = file->private_data; |
| 2808 | substream = pcm_file->substream; |
| 2809 | snd_assert(substream != NULL, result = -ENXIO; goto end); |
| 2810 | runtime = substream->runtime; |
| 2811 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 2812 | result = -EBADFD; |
| 2813 | goto end; |
| 2814 | } |
| 2815 | if (!frame_aligned(runtime, count)) { |
| 2816 | result = -EINVAL; |
| 2817 | goto end; |
| 2818 | } |
| 2819 | count = bytes_to_frames(runtime, count); |
| 2820 | result = snd_pcm_lib_write(substream, buf, count); |
| 2821 | if (result > 0) |
| 2822 | result = frames_to_bytes(runtime, result); |
| 2823 | end: |
| 2824 | return result; |
| 2825 | } |
| 2826 | |
| 2827 | static ssize_t snd_pcm_readv(struct file *file, const struct iovec *_vector, |
| 2828 | unsigned long count, loff_t * offset) |
| 2829 | |
| 2830 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2831 | struct snd_pcm_file *pcm_file; |
| 2832 | struct snd_pcm_substream *substream; |
| 2833 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2834 | snd_pcm_sframes_t result; |
| 2835 | unsigned long i; |
| 2836 | void __user **bufs; |
| 2837 | snd_pcm_uframes_t frames; |
| 2838 | |
| 2839 | pcm_file = file->private_data; |
| 2840 | substream = pcm_file->substream; |
| 2841 | snd_assert(substream != NULL, return -ENXIO); |
| 2842 | runtime = substream->runtime; |
| 2843 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 2844 | return -EBADFD; |
| 2845 | if (count > 1024 || count != runtime->channels) |
| 2846 | return -EINVAL; |
| 2847 | if (!frame_aligned(runtime, _vector->iov_len)) |
| 2848 | return -EINVAL; |
| 2849 | frames = bytes_to_samples(runtime, _vector->iov_len); |
| 2850 | bufs = kmalloc(sizeof(void *) * count, GFP_KERNEL); |
| 2851 | if (bufs == NULL) |
| 2852 | return -ENOMEM; |
| 2853 | for (i = 0; i < count; ++i) |
| 2854 | bufs[i] = _vector[i].iov_base; |
| 2855 | result = snd_pcm_lib_readv(substream, bufs, frames); |
| 2856 | if (result > 0) |
| 2857 | result = frames_to_bytes(runtime, result); |
| 2858 | kfree(bufs); |
| 2859 | return result; |
| 2860 | } |
| 2861 | |
| 2862 | static ssize_t snd_pcm_writev(struct file *file, const struct iovec *_vector, |
| 2863 | unsigned long count, loff_t * offset) |
| 2864 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2865 | struct snd_pcm_file *pcm_file; |
| 2866 | struct snd_pcm_substream *substream; |
| 2867 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2868 | snd_pcm_sframes_t result; |
| 2869 | unsigned long i; |
| 2870 | void __user **bufs; |
| 2871 | snd_pcm_uframes_t frames; |
| 2872 | |
| 2873 | pcm_file = file->private_data; |
| 2874 | substream = pcm_file->substream; |
| 2875 | snd_assert(substream != NULL, result = -ENXIO; goto end); |
| 2876 | runtime = substream->runtime; |
| 2877 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 2878 | result = -EBADFD; |
| 2879 | goto end; |
| 2880 | } |
| 2881 | if (count > 128 || count != runtime->channels || |
| 2882 | !frame_aligned(runtime, _vector->iov_len)) { |
| 2883 | result = -EINVAL; |
| 2884 | goto end; |
| 2885 | } |
| 2886 | frames = bytes_to_samples(runtime, _vector->iov_len); |
| 2887 | bufs = kmalloc(sizeof(void *) * count, GFP_KERNEL); |
| 2888 | if (bufs == NULL) |
| 2889 | return -ENOMEM; |
| 2890 | for (i = 0; i < count; ++i) |
| 2891 | bufs[i] = _vector[i].iov_base; |
| 2892 | result = snd_pcm_lib_writev(substream, bufs, frames); |
| 2893 | if (result > 0) |
| 2894 | result = frames_to_bytes(runtime, result); |
| 2895 | kfree(bufs); |
| 2896 | end: |
| 2897 | return result; |
| 2898 | } |
| 2899 | |
| 2900 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) |
| 2901 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2902 | struct snd_pcm_file *pcm_file; |
| 2903 | struct snd_pcm_substream *substream; |
| 2904 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2905 | unsigned int mask; |
| 2906 | snd_pcm_uframes_t avail; |
| 2907 | |
| 2908 | pcm_file = file->private_data; |
| 2909 | |
| 2910 | substream = pcm_file->substream; |
| 2911 | snd_assert(substream != NULL, return -ENXIO); |
| 2912 | runtime = substream->runtime; |
| 2913 | |
| 2914 | poll_wait(file, &runtime->sleep, wait); |
| 2915 | |
| 2916 | snd_pcm_stream_lock_irq(substream); |
| 2917 | avail = snd_pcm_playback_avail(runtime); |
| 2918 | switch (runtime->status->state) { |
| 2919 | case SNDRV_PCM_STATE_RUNNING: |
| 2920 | case SNDRV_PCM_STATE_PREPARED: |
| 2921 | case SNDRV_PCM_STATE_PAUSED: |
| 2922 | if (avail >= runtime->control->avail_min) { |
| 2923 | mask = POLLOUT | POLLWRNORM; |
| 2924 | break; |
| 2925 | } |
| 2926 | /* Fall through */ |
| 2927 | case SNDRV_PCM_STATE_DRAINING: |
| 2928 | mask = 0; |
| 2929 | break; |
| 2930 | default: |
| 2931 | mask = POLLOUT | POLLWRNORM | POLLERR; |
| 2932 | break; |
| 2933 | } |
| 2934 | snd_pcm_stream_unlock_irq(substream); |
| 2935 | return mask; |
| 2936 | } |
| 2937 | |
| 2938 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) |
| 2939 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2940 | struct snd_pcm_file *pcm_file; |
| 2941 | struct snd_pcm_substream *substream; |
| 2942 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2943 | unsigned int mask; |
| 2944 | snd_pcm_uframes_t avail; |
| 2945 | |
| 2946 | pcm_file = file->private_data; |
| 2947 | |
| 2948 | substream = pcm_file->substream; |
| 2949 | snd_assert(substream != NULL, return -ENXIO); |
| 2950 | runtime = substream->runtime; |
| 2951 | |
| 2952 | poll_wait(file, &runtime->sleep, wait); |
| 2953 | |
| 2954 | snd_pcm_stream_lock_irq(substream); |
| 2955 | avail = snd_pcm_capture_avail(runtime); |
| 2956 | switch (runtime->status->state) { |
| 2957 | case SNDRV_PCM_STATE_RUNNING: |
| 2958 | case SNDRV_PCM_STATE_PREPARED: |
| 2959 | case SNDRV_PCM_STATE_PAUSED: |
| 2960 | if (avail >= runtime->control->avail_min) { |
| 2961 | mask = POLLIN | POLLRDNORM; |
| 2962 | break; |
| 2963 | } |
| 2964 | mask = 0; |
| 2965 | break; |
| 2966 | case SNDRV_PCM_STATE_DRAINING: |
| 2967 | if (avail > 0) { |
| 2968 | mask = POLLIN | POLLRDNORM; |
| 2969 | break; |
| 2970 | } |
| 2971 | /* Fall through */ |
| 2972 | default: |
| 2973 | mask = POLLIN | POLLRDNORM | POLLERR; |
| 2974 | break; |
| 2975 | } |
| 2976 | snd_pcm_stream_unlock_irq(substream); |
| 2977 | return mask; |
| 2978 | } |
| 2979 | |
| 2980 | /* |
| 2981 | * mmap support |
| 2982 | */ |
| 2983 | |
| 2984 | /* |
| 2985 | * Only on coherent architectures, we can mmap the status and the control records |
| 2986 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... |
| 2987 | */ |
| 2988 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) |
| 2989 | /* |
| 2990 | * mmap status record |
| 2991 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2992 | static struct page * snd_pcm_mmap_status_nopage(struct vm_area_struct *area, |
| 2993 | unsigned long address, int *type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2994 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 2995 | struct snd_pcm_substream *substream = area->vm_private_data; |
| 2996 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2997 | struct page * page; |
| 2998 | |
| 2999 | if (substream == NULL) |
| 3000 | return NOPAGE_OOM; |
| 3001 | runtime = substream->runtime; |
| 3002 | page = virt_to_page(runtime->status); |
Nick Piggin | b581003 | 2005-10-29 18:16:12 -0700 | [diff] [blame] | 3003 | get_page(page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3004 | if (type) |
| 3005 | *type = VM_FAULT_MINOR; |
| 3006 | return page; |
| 3007 | } |
| 3008 | |
| 3009 | static struct vm_operations_struct snd_pcm_vm_ops_status = |
| 3010 | { |
| 3011 | .nopage = snd_pcm_mmap_status_nopage, |
| 3012 | }; |
| 3013 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3014 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3015 | struct vm_area_struct *area) |
| 3016 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3017 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3018 | long size; |
| 3019 | if (!(area->vm_flags & VM_READ)) |
| 3020 | return -EINVAL; |
| 3021 | runtime = substream->runtime; |
| 3022 | snd_assert(runtime != NULL, return -EAGAIN); |
| 3023 | size = area->vm_end - area->vm_start; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3024 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3025 | return -EINVAL; |
| 3026 | area->vm_ops = &snd_pcm_vm_ops_status; |
| 3027 | area->vm_private_data = substream; |
| 3028 | area->vm_flags |= VM_RESERVED; |
| 3029 | return 0; |
| 3030 | } |
| 3031 | |
| 3032 | /* |
| 3033 | * mmap control record |
| 3034 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3035 | static struct page * snd_pcm_mmap_control_nopage(struct vm_area_struct *area, |
| 3036 | unsigned long address, int *type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3037 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3038 | struct snd_pcm_substream *substream = area->vm_private_data; |
| 3039 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3040 | struct page * page; |
| 3041 | |
| 3042 | if (substream == NULL) |
| 3043 | return NOPAGE_OOM; |
| 3044 | runtime = substream->runtime; |
| 3045 | page = virt_to_page(runtime->control); |
Nick Piggin | b581003 | 2005-10-29 18:16:12 -0700 | [diff] [blame] | 3046 | get_page(page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3047 | if (type) |
| 3048 | *type = VM_FAULT_MINOR; |
| 3049 | return page; |
| 3050 | } |
| 3051 | |
| 3052 | static struct vm_operations_struct snd_pcm_vm_ops_control = |
| 3053 | { |
| 3054 | .nopage = snd_pcm_mmap_control_nopage, |
| 3055 | }; |
| 3056 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3057 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3058 | struct vm_area_struct *area) |
| 3059 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3060 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3061 | long size; |
| 3062 | if (!(area->vm_flags & VM_READ)) |
| 3063 | return -EINVAL; |
| 3064 | runtime = substream->runtime; |
| 3065 | snd_assert(runtime != NULL, return -EAGAIN); |
| 3066 | size = area->vm_end - area->vm_start; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3067 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3068 | return -EINVAL; |
| 3069 | area->vm_ops = &snd_pcm_vm_ops_control; |
| 3070 | area->vm_private_data = substream; |
| 3071 | area->vm_flags |= VM_RESERVED; |
| 3072 | return 0; |
| 3073 | } |
| 3074 | #else /* ! coherent mmap */ |
| 3075 | /* |
| 3076 | * don't support mmap for status and control records. |
| 3077 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3078 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3079 | struct vm_area_struct *area) |
| 3080 | { |
| 3081 | return -ENXIO; |
| 3082 | } |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3083 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3084 | struct vm_area_struct *area) |
| 3085 | { |
| 3086 | return -ENXIO; |
| 3087 | } |
| 3088 | #endif /* coherent mmap */ |
| 3089 | |
| 3090 | /* |
| 3091 | * nopage callback for mmapping a RAM page |
| 3092 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3093 | static struct page *snd_pcm_mmap_data_nopage(struct vm_area_struct *area, |
| 3094 | unsigned long address, int *type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3095 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3096 | struct snd_pcm_substream *substream = area->vm_private_data; |
| 3097 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3098 | unsigned long offset; |
| 3099 | struct page * page; |
| 3100 | void *vaddr; |
| 3101 | size_t dma_bytes; |
| 3102 | |
| 3103 | if (substream == NULL) |
| 3104 | return NOPAGE_OOM; |
| 3105 | runtime = substream->runtime; |
| 3106 | offset = area->vm_pgoff << PAGE_SHIFT; |
| 3107 | offset += address - area->vm_start; |
| 3108 | snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_OOM); |
| 3109 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
| 3110 | if (offset > dma_bytes - PAGE_SIZE) |
| 3111 | return NOPAGE_SIGBUS; |
| 3112 | if (substream->ops->page) { |
| 3113 | page = substream->ops->page(substream, offset); |
| 3114 | if (! page) |
| 3115 | return NOPAGE_OOM; |
| 3116 | } else { |
| 3117 | vaddr = runtime->dma_area + offset; |
| 3118 | page = virt_to_page(vaddr); |
| 3119 | } |
Nick Piggin | b581003 | 2005-10-29 18:16:12 -0700 | [diff] [blame] | 3120 | get_page(page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3121 | if (type) |
| 3122 | *type = VM_FAULT_MINOR; |
| 3123 | return page; |
| 3124 | } |
| 3125 | |
| 3126 | static struct vm_operations_struct snd_pcm_vm_ops_data = |
| 3127 | { |
| 3128 | .open = snd_pcm_mmap_data_open, |
| 3129 | .close = snd_pcm_mmap_data_close, |
| 3130 | .nopage = snd_pcm_mmap_data_nopage, |
| 3131 | }; |
| 3132 | |
| 3133 | /* |
| 3134 | * mmap the DMA buffer on RAM |
| 3135 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3136 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
| 3137 | struct vm_area_struct *area) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3138 | { |
| 3139 | area->vm_ops = &snd_pcm_vm_ops_data; |
| 3140 | area->vm_private_data = substream; |
| 3141 | area->vm_flags |= VM_RESERVED; |
| 3142 | atomic_inc(&substream->runtime->mmap_count); |
| 3143 | return 0; |
| 3144 | } |
| 3145 | |
| 3146 | /* |
| 3147 | * mmap the DMA buffer on I/O memory area |
| 3148 | */ |
| 3149 | #if SNDRV_PCM_INFO_MMAP_IOMEM |
| 3150 | static struct vm_operations_struct snd_pcm_vm_ops_data_mmio = |
| 3151 | { |
| 3152 | .open = snd_pcm_mmap_data_open, |
| 3153 | .close = snd_pcm_mmap_data_close, |
| 3154 | }; |
| 3155 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3156 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
| 3157 | struct vm_area_struct *area) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3158 | { |
| 3159 | long size; |
| 3160 | unsigned long offset; |
| 3161 | |
| 3162 | #ifdef pgprot_noncached |
| 3163 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); |
| 3164 | #endif |
| 3165 | area->vm_ops = &snd_pcm_vm_ops_data_mmio; |
| 3166 | area->vm_private_data = substream; |
| 3167 | area->vm_flags |= VM_IO; |
| 3168 | size = area->vm_end - area->vm_start; |
| 3169 | offset = area->vm_pgoff << PAGE_SHIFT; |
| 3170 | if (io_remap_pfn_range(area, area->vm_start, |
| 3171 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, |
| 3172 | size, area->vm_page_prot)) |
| 3173 | return -EAGAIN; |
| 3174 | atomic_inc(&substream->runtime->mmap_count); |
| 3175 | return 0; |
| 3176 | } |
| 3177 | #endif /* SNDRV_PCM_INFO_MMAP */ |
| 3178 | |
| 3179 | /* |
| 3180 | * mmap DMA buffer |
| 3181 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3182 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3183 | struct vm_area_struct *area) |
| 3184 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3185 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3186 | long size; |
| 3187 | unsigned long offset; |
| 3188 | size_t dma_bytes; |
| 3189 | |
| 3190 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 3191 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) |
| 3192 | return -EINVAL; |
| 3193 | } else { |
| 3194 | if (!(area->vm_flags & VM_READ)) |
| 3195 | return -EINVAL; |
| 3196 | } |
| 3197 | runtime = substream->runtime; |
| 3198 | snd_assert(runtime != NULL, return -EAGAIN); |
| 3199 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 3200 | return -EBADFD; |
| 3201 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) |
| 3202 | return -ENXIO; |
| 3203 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || |
| 3204 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) |
| 3205 | return -EINVAL; |
| 3206 | size = area->vm_end - area->vm_start; |
| 3207 | offset = area->vm_pgoff << PAGE_SHIFT; |
| 3208 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
| 3209 | if ((size_t)size > dma_bytes) |
| 3210 | return -EINVAL; |
| 3211 | if (offset > dma_bytes - size) |
| 3212 | return -EINVAL; |
| 3213 | |
| 3214 | if (substream->ops->mmap) |
| 3215 | return substream->ops->mmap(substream, area); |
| 3216 | else |
| 3217 | return snd_pcm_default_mmap(substream, area); |
| 3218 | } |
| 3219 | |
| 3220 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
| 3221 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3222 | struct snd_pcm_file * pcm_file; |
| 3223 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3224 | unsigned long offset; |
| 3225 | |
| 3226 | pcm_file = file->private_data; |
| 3227 | substream = pcm_file->substream; |
| 3228 | snd_assert(substream != NULL, return -ENXIO); |
| 3229 | |
| 3230 | offset = area->vm_pgoff << PAGE_SHIFT; |
| 3231 | switch (offset) { |
| 3232 | case SNDRV_PCM_MMAP_OFFSET_STATUS: |
| 3233 | if (substream->no_mmap_ctrl) |
| 3234 | return -ENXIO; |
| 3235 | return snd_pcm_mmap_status(substream, file, area); |
| 3236 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: |
| 3237 | if (substream->no_mmap_ctrl) |
| 3238 | return -ENXIO; |
| 3239 | return snd_pcm_mmap_control(substream, file, area); |
| 3240 | default: |
| 3241 | return snd_pcm_mmap_data(substream, file, area); |
| 3242 | } |
| 3243 | return 0; |
| 3244 | } |
| 3245 | |
| 3246 | static int snd_pcm_fasync(int fd, struct file * file, int on) |
| 3247 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3248 | struct snd_pcm_file * pcm_file; |
| 3249 | struct snd_pcm_substream *substream; |
| 3250 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3251 | int err; |
| 3252 | |
| 3253 | pcm_file = file->private_data; |
| 3254 | substream = pcm_file->substream; |
| 3255 | snd_assert(substream != NULL, return -ENXIO); |
| 3256 | runtime = substream->runtime; |
| 3257 | |
| 3258 | err = fasync_helper(fd, file, on, &runtime->fasync); |
| 3259 | if (err < 0) |
| 3260 | return err; |
| 3261 | return 0; |
| 3262 | } |
| 3263 | |
| 3264 | /* |
| 3265 | * ioctl32 compat |
| 3266 | */ |
| 3267 | #ifdef CONFIG_COMPAT |
| 3268 | #include "pcm_compat.c" |
| 3269 | #else |
| 3270 | #define snd_pcm_ioctl_compat NULL |
| 3271 | #endif |
| 3272 | |
| 3273 | /* |
| 3274 | * To be removed helpers to keep binary compatibility |
| 3275 | */ |
| 3276 | |
Takashi Iwai | 59d4858 | 2005-12-01 10:51:58 +0100 | [diff] [blame] | 3277 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3278 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
| 3279 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) |
| 3280 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3281 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
| 3282 | struct snd_pcm_hw_params_old *oparams) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3283 | { |
| 3284 | unsigned int i; |
| 3285 | |
| 3286 | memset(params, 0, sizeof(*params)); |
| 3287 | params->flags = oparams->flags; |
| 3288 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) |
| 3289 | params->masks[i].bits[0] = oparams->masks[i]; |
| 3290 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); |
| 3291 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); |
| 3292 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); |
| 3293 | params->info = oparams->info; |
| 3294 | params->msbits = oparams->msbits; |
| 3295 | params->rate_num = oparams->rate_num; |
| 3296 | params->rate_den = oparams->rate_den; |
| 3297 | params->fifo_size = oparams->fifo_size; |
| 3298 | } |
| 3299 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3300 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
| 3301 | struct snd_pcm_hw_params *params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3302 | { |
| 3303 | unsigned int i; |
| 3304 | |
| 3305 | memset(oparams, 0, sizeof(*oparams)); |
| 3306 | oparams->flags = params->flags; |
| 3307 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) |
| 3308 | oparams->masks[i] = params->masks[i].bits[0]; |
| 3309 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); |
| 3310 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); |
| 3311 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); |
| 3312 | oparams->info = params->info; |
| 3313 | oparams->msbits = params->msbits; |
| 3314 | oparams->rate_num = params->rate_num; |
| 3315 | oparams->rate_den = params->rate_den; |
| 3316 | oparams->fifo_size = params->fifo_size; |
| 3317 | } |
| 3318 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3319 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
| 3320 | struct snd_pcm_hw_params_old __user * _oparams) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3321 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3322 | struct snd_pcm_hw_params *params; |
| 3323 | struct snd_pcm_hw_params_old *oparams = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3324 | int err; |
| 3325 | |
| 3326 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 3327 | if (!params) { |
| 3328 | err = -ENOMEM; |
| 3329 | goto out; |
| 3330 | } |
| 3331 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); |
| 3332 | if (!oparams) { |
| 3333 | err = -ENOMEM; |
| 3334 | goto out; |
| 3335 | } |
| 3336 | |
| 3337 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { |
| 3338 | err = -EFAULT; |
| 3339 | goto out; |
| 3340 | } |
| 3341 | snd_pcm_hw_convert_from_old_params(params, oparams); |
| 3342 | err = snd_pcm_hw_refine(substream, params); |
| 3343 | snd_pcm_hw_convert_to_old_params(oparams, params); |
| 3344 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { |
| 3345 | if (!err) |
| 3346 | err = -EFAULT; |
| 3347 | } |
| 3348 | out: |
| 3349 | kfree(params); |
| 3350 | kfree(oparams); |
| 3351 | return err; |
| 3352 | } |
| 3353 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3354 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
| 3355 | struct snd_pcm_hw_params_old __user * _oparams) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3356 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 3357 | struct snd_pcm_hw_params *params; |
| 3358 | struct snd_pcm_hw_params_old *oparams = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3359 | int err; |
| 3360 | |
| 3361 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 3362 | if (!params) { |
| 3363 | err = -ENOMEM; |
| 3364 | goto out; |
| 3365 | } |
| 3366 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); |
| 3367 | if (!oparams) { |
| 3368 | err = -ENOMEM; |
| 3369 | goto out; |
| 3370 | } |
| 3371 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { |
| 3372 | err = -EFAULT; |
| 3373 | goto out; |
| 3374 | } |
| 3375 | snd_pcm_hw_convert_from_old_params(params, oparams); |
| 3376 | err = snd_pcm_hw_params(substream, params); |
| 3377 | snd_pcm_hw_convert_to_old_params(oparams, params); |
| 3378 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { |
| 3379 | if (!err) |
| 3380 | err = -EFAULT; |
| 3381 | } |
| 3382 | out: |
| 3383 | kfree(params); |
| 3384 | kfree(oparams); |
| 3385 | return err; |
| 3386 | } |
Takashi Iwai | 59d4858 | 2005-12-01 10:51:58 +0100 | [diff] [blame] | 3387 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3388 | |
| 3389 | /* |
| 3390 | * Register section |
| 3391 | */ |
| 3392 | |
Clemens Ladisch | 2af677f | 2005-11-20 14:03:48 +0100 | [diff] [blame] | 3393 | struct file_operations snd_pcm_f_ops[2] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3394 | { |
Clemens Ladisch | 2af677f | 2005-11-20 14:03:48 +0100 | [diff] [blame] | 3395 | .owner = THIS_MODULE, |
| 3396 | .write = snd_pcm_write, |
| 3397 | .writev = snd_pcm_writev, |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 3398 | .open = snd_pcm_playback_open, |
Clemens Ladisch | 2af677f | 2005-11-20 14:03:48 +0100 | [diff] [blame] | 3399 | .release = snd_pcm_release, |
| 3400 | .poll = snd_pcm_playback_poll, |
| 3401 | .unlocked_ioctl = snd_pcm_playback_ioctl, |
| 3402 | .compat_ioctl = snd_pcm_ioctl_compat, |
| 3403 | .mmap = snd_pcm_mmap, |
| 3404 | .fasync = snd_pcm_fasync, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3405 | }, |
| 3406 | { |
Clemens Ladisch | 2af677f | 2005-11-20 14:03:48 +0100 | [diff] [blame] | 3407 | .owner = THIS_MODULE, |
| 3408 | .read = snd_pcm_read, |
| 3409 | .readv = snd_pcm_readv, |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 3410 | .open = snd_pcm_capture_open, |
Clemens Ladisch | 2af677f | 2005-11-20 14:03:48 +0100 | [diff] [blame] | 3411 | .release = snd_pcm_release, |
| 3412 | .poll = snd_pcm_capture_poll, |
| 3413 | .unlocked_ioctl = snd_pcm_capture_ioctl, |
| 3414 | .compat_ioctl = snd_pcm_ioctl_compat, |
| 3415 | .mmap = snd_pcm_mmap, |
| 3416 | .fasync = snd_pcm_fasync, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3417 | } |
| 3418 | }; |