2 * Digital Audio (PCM) abstract layer / OSS compatible
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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.
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.
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
29 #include <linux/init.h>
30 #include <linux/slab.h>
31 #include <linux/time.h>
32 #include <linux/vmalloc.h>
33 #include <linux/moduleparam.h>
34 #include <linux/string.h>
35 #include <sound/core.h>
36 #include <sound/minors.h>
37 #include <sound/pcm.h>
38 #include <sound/pcm_params.h>
39 #include "pcm_plugin.h"
40 #include <sound/info.h>
41 #include <linux/soundcard.h>
42 #include <sound/initval.h>
44 #define OSS_ALSAEMULVER _SIOR ('M', 249, int)
46 static int dsp_map[SNDRV_CARDS];
47 static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1};
48 static int nonblock_open = 1;
50 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, Abramo Bagnara <abramo@alsa-project.org>");
51 MODULE_DESCRIPTION("PCM OSS emulation for ALSA.");
52 MODULE_LICENSE("GPL");
53 module_param_array(dsp_map, int, NULL, 0444);
54 MODULE_PARM_DESC(dsp_map, "PCM device number assigned to 1st OSS device.");
55 module_param_array(adsp_map, int, NULL, 0444);
56 MODULE_PARM_DESC(adsp_map, "PCM device number assigned to 2nd OSS device.");
57 module_param(nonblock_open, bool, 0644);
58 MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices.");
59 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM);
60 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1);
62 extern int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg);
63 static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file);
64 static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file);
65 static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file);
67 static inline mm_segment_t snd_enter_user(void)
69 mm_segment_t fs = get_fs();
74 static inline void snd_leave_user(mm_segment_t fs)
80 * helper functions to process hw_params
82 static int snd_interval_refine_min(struct snd_interval *i, unsigned int min, int openmin)
89 } else if (i->min == min && !i->openmin && openmin) {
99 if (snd_interval_checkempty(i)) {
100 snd_interval_none(i);
106 static int snd_interval_refine_max(struct snd_interval *i, unsigned int max, int openmax)
111 i->openmax = openmax;
113 } else if (i->max == max && !i->openmax && openmax) {
123 if (snd_interval_checkempty(i)) {
124 snd_interval_none(i);
130 static int snd_interval_refine_set(struct snd_interval *i, unsigned int val)
132 struct snd_interval t;
135 t.openmin = t.openmax = 0;
137 return snd_interval_refine(i, &t);
141 * snd_pcm_hw_param_value_min
142 * @params: the hw_params instance
143 * @var: parameter to retrieve
144 * @dir: pointer to the direction (-1,0,1) or NULL
146 * Return the minimum value for field PAR.
149 snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params,
150 snd_pcm_hw_param_t var, int *dir)
152 if (hw_is_mask(var)) {
155 return snd_mask_min(hw_param_mask_c(params, var));
157 if (hw_is_interval(var)) {
158 const struct snd_interval *i = hw_param_interval_c(params, var);
161 return snd_interval_min(i);
167 * snd_pcm_hw_param_value_max
168 * @params: the hw_params instance
169 * @var: parameter to retrieve
170 * @dir: pointer to the direction (-1,0,1) or NULL
172 * Return the maximum value for field PAR.
175 snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params,
176 snd_pcm_hw_param_t var, int *dir)
178 if (hw_is_mask(var)) {
181 return snd_mask_max(hw_param_mask_c(params, var));
183 if (hw_is_interval(var)) {
184 const struct snd_interval *i = hw_param_interval_c(params, var);
186 *dir = - (int) i->openmax;
187 return snd_interval_max(i);
192 static int _snd_pcm_hw_param_mask(struct snd_pcm_hw_params *params,
193 snd_pcm_hw_param_t var,
194 const struct snd_mask *val)
197 changed = snd_mask_refine(hw_param_mask(params, var), val);
199 params->cmask |= 1 << var;
200 params->rmask |= 1 << var;
205 static int snd_pcm_hw_param_mask(struct snd_pcm_substream *pcm,
206 struct snd_pcm_hw_params *params,
207 snd_pcm_hw_param_t var,
208 const struct snd_mask *val)
210 int changed = _snd_pcm_hw_param_mask(params, var, val);
214 int err = snd_pcm_hw_refine(pcm, params);
221 static int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params,
222 snd_pcm_hw_param_t var, unsigned int val,
230 } else if (dir < 0) {
238 changed = snd_mask_refine_min(hw_param_mask(params, var),
240 else if (hw_is_interval(var))
241 changed = snd_interval_refine_min(hw_param_interval(params, var),
246 params->cmask |= 1 << var;
247 params->rmask |= 1 << var;
253 * snd_pcm_hw_param_min
255 * @params: the hw_params instance
256 * @var: parameter to retrieve
257 * @val: minimal value
258 * @dir: pointer to the direction (-1,0,1) or NULL
260 * Inside configuration space defined by PARAMS remove from PAR all
261 * values < VAL. Reduce configuration space accordingly.
262 * Return new minimum or -EINVAL if the configuration space is empty
264 static int snd_pcm_hw_param_min(struct snd_pcm_substream *pcm,
265 struct snd_pcm_hw_params *params,
266 snd_pcm_hw_param_t var, unsigned int val,
269 int changed = _snd_pcm_hw_param_min(params, var, val, dir ? *dir : 0);
273 int err = snd_pcm_hw_refine(pcm, params);
277 return snd_pcm_hw_param_value_min(params, var, dir);
280 static int _snd_pcm_hw_param_max(struct snd_pcm_hw_params *params,
281 snd_pcm_hw_param_t var, unsigned int val,
289 } else if (dir > 0) {
294 if (hw_is_mask(var)) {
295 if (val == 0 && open) {
296 snd_mask_none(hw_param_mask(params, var));
299 changed = snd_mask_refine_max(hw_param_mask(params, var),
301 } else if (hw_is_interval(var))
302 changed = snd_interval_refine_max(hw_param_interval(params, var),
307 params->cmask |= 1 << var;
308 params->rmask |= 1 << var;
314 * snd_pcm_hw_param_max
316 * @params: the hw_params instance
317 * @var: parameter to retrieve
318 * @val: maximal value
319 * @dir: pointer to the direction (-1,0,1) or NULL
321 * Inside configuration space defined by PARAMS remove from PAR all
322 * values >= VAL + 1. Reduce configuration space accordingly.
323 * Return new maximum or -EINVAL if the configuration space is empty
325 static int snd_pcm_hw_param_max(struct snd_pcm_substream *pcm,
326 struct snd_pcm_hw_params *params,
327 snd_pcm_hw_param_t var, unsigned int val,
330 int changed = _snd_pcm_hw_param_max(params, var, val, dir ? *dir : 0);
334 int err = snd_pcm_hw_refine(pcm, params);
338 return snd_pcm_hw_param_value_max(params, var, dir);
341 static int boundary_sub(int a, int adir,
345 adir = adir < 0 ? -1 : (adir > 0 ? 1 : 0);
346 bdir = bdir < 0 ? -1 : (bdir > 0 ? 1 : 0);
351 } else if (*cdir == 2) {
357 static int boundary_lt(unsigned int a, int adir,
358 unsigned int b, int bdir)
370 return a < b || (a == b && adir < bdir);
373 /* Return 1 if min is nearer to best than max */
374 static int boundary_nearer(int min, int mindir,
375 int best, int bestdir,
380 boundary_sub(best, bestdir, min, mindir, &dmin, &dmindir);
381 boundary_sub(max, maxdir, best, bestdir, &dmax, &dmaxdir);
382 return boundary_lt(dmin, dmindir, dmax, dmaxdir);
386 * snd_pcm_hw_param_near
388 * @params: the hw_params instance
389 * @var: parameter to retrieve
390 * @best: value to set
391 * @dir: pointer to the direction (-1,0,1) or NULL
393 * Inside configuration space defined by PARAMS set PAR to the available value
394 * nearest to VAL. Reduce configuration space accordingly.
395 * This function cannot be called for SNDRV_PCM_HW_PARAM_ACCESS,
396 * SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT.
397 * Return the value found.
399 static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm,
400 struct snd_pcm_hw_params *params,
401 snd_pcm_hw_param_t var, unsigned int best,
404 struct snd_pcm_hw_params *save = NULL;
406 unsigned int saved_min;
410 int valdir = dir ? *dir : 0;
415 mindir = maxdir = valdir;
418 else if (maxdir == 0)
424 save = kmalloc(sizeof(*save), GFP_KERNEL);
429 min = snd_pcm_hw_param_min(pcm, params, var, min, &mindir);
431 struct snd_pcm_hw_params *params1;
434 if ((unsigned int)min == saved_min && mindir == valdir)
436 params1 = kmalloc(sizeof(*params1), GFP_KERNEL);
437 if (params1 == NULL) {
442 max = snd_pcm_hw_param_max(pcm, params1, var, max, &maxdir);
447 if (boundary_nearer(max, maxdir, best, valdir, min, mindir)) {
454 max = snd_pcm_hw_param_max(pcm, params, var, max, &maxdir);
462 v = snd_pcm_hw_param_last(pcm, params, var, dir);
464 v = snd_pcm_hw_param_first(pcm, params, var, dir);
469 static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params,
470 snd_pcm_hw_param_t var, unsigned int val,
474 if (hw_is_mask(var)) {
475 struct snd_mask *m = hw_param_mask(params, var);
476 if (val == 0 && dir < 0) {
484 changed = snd_mask_refine_set(hw_param_mask(params, var), val);
486 } else if (hw_is_interval(var)) {
487 struct snd_interval *i = hw_param_interval(params, var);
488 if (val == 0 && dir < 0) {
490 snd_interval_none(i);
492 changed = snd_interval_refine_set(i, val);
494 struct snd_interval t;
506 changed = snd_interval_refine(i, &t);
511 params->cmask |= 1 << var;
512 params->rmask |= 1 << var;
518 * snd_pcm_hw_param_set
520 * @params: the hw_params instance
521 * @var: parameter to retrieve
523 * @dir: pointer to the direction (-1,0,1) or NULL
525 * Inside configuration space defined by PARAMS remove from PAR all
526 * values != VAL. Reduce configuration space accordingly.
527 * Return VAL or -EINVAL if the configuration space is empty
529 static int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm,
530 struct snd_pcm_hw_params *params,
531 snd_pcm_hw_param_t var, unsigned int val,
534 int changed = _snd_pcm_hw_param_set(params, var, val, dir);
538 int err = snd_pcm_hw_refine(pcm, params);
542 return snd_pcm_hw_param_value(params, var, NULL);
545 static int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params,
546 snd_pcm_hw_param_t var)
549 changed = snd_interval_setinteger(hw_param_interval(params, var));
551 params->cmask |= 1 << var;
552 params->rmask |= 1 << var;
561 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
562 static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream)
564 struct snd_pcm_runtime *runtime = substream->runtime;
565 struct snd_pcm_plugin *plugin, *next;
567 plugin = runtime->oss.plugin_first;
570 snd_pcm_plugin_free(plugin);
573 runtime->oss.plugin_first = runtime->oss.plugin_last = NULL;
577 static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin)
579 struct snd_pcm_runtime *runtime = plugin->plug->runtime;
580 plugin->next = runtime->oss.plugin_first;
582 if (runtime->oss.plugin_first) {
583 runtime->oss.plugin_first->prev = plugin;
584 runtime->oss.plugin_first = plugin;
586 runtime->oss.plugin_last =
587 runtime->oss.plugin_first = plugin;
592 int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin)
594 struct snd_pcm_runtime *runtime = plugin->plug->runtime;
596 plugin->prev = runtime->oss.plugin_last;
597 if (runtime->oss.plugin_last) {
598 runtime->oss.plugin_last->next = plugin;
599 runtime->oss.plugin_last = plugin;
601 runtime->oss.plugin_last =
602 runtime->oss.plugin_first = plugin;
606 #endif /* CONFIG_SND_PCM_OSS_PLUGINS */
608 static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames)
610 struct snd_pcm_runtime *runtime = substream->runtime;
611 long buffer_size = snd_pcm_lib_buffer_bytes(substream);
612 long bytes = frames_to_bytes(runtime, frames);
613 if (buffer_size == runtime->oss.buffer_bytes)
615 #if BITS_PER_LONG >= 64
616 return runtime->oss.buffer_bytes * bytes / buffer_size;
619 u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes;
621 div64_32(&bsize, buffer_size, &rem);
627 static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes)
629 struct snd_pcm_runtime *runtime = substream->runtime;
630 long buffer_size = snd_pcm_lib_buffer_bytes(substream);
631 if (buffer_size == runtime->oss.buffer_bytes)
632 return bytes_to_frames(runtime, bytes);
633 return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes);
636 /* define extended formats in the recent OSS versions (if any) */
638 #define AFMT_S32_LE 0x00001000
639 #define AFMT_S32_BE 0x00002000
640 #define AFMT_S24_LE 0x00008000
641 #define AFMT_S24_BE 0x00010000
642 #define AFMT_S24_PACKED 0x00040000
644 /* other supported formats */
645 #define AFMT_FLOAT 0x00004000
646 #define AFMT_SPDIF_RAW 0x00020000
648 /* unsupported formats */
649 #define AFMT_AC3 0x00000400
650 #define AFMT_VORBIS 0x00000800
652 static int snd_pcm_oss_format_from(int format)
655 case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW;
656 case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW;
657 case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM;
658 case AFMT_U8: return SNDRV_PCM_FORMAT_U8;
659 case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE;
660 case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE;
661 case AFMT_S8: return SNDRV_PCM_FORMAT_S8;
662 case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE;
663 case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE;
664 case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG;
665 case AFMT_S32_LE: return SNDRV_PCM_FORMAT_S32_LE;
666 case AFMT_S32_BE: return SNDRV_PCM_FORMAT_S32_BE;
667 case AFMT_S24_LE: return SNDRV_PCM_FORMAT_S24_LE;
668 case AFMT_S24_BE: return SNDRV_PCM_FORMAT_S24_BE;
669 case AFMT_S24_PACKED: return SNDRV_PCM_FORMAT_S24_3LE;
670 case AFMT_FLOAT: return SNDRV_PCM_FORMAT_FLOAT;
671 case AFMT_SPDIF_RAW: return SNDRV_PCM_FORMAT_IEC958_SUBFRAME;
672 default: return SNDRV_PCM_FORMAT_U8;
676 static int snd_pcm_oss_format_to(int format)
679 case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW;
680 case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW;
681 case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM;
682 case SNDRV_PCM_FORMAT_U8: return AFMT_U8;
683 case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE;
684 case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE;
685 case SNDRV_PCM_FORMAT_S8: return AFMT_S8;
686 case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE;
687 case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE;
688 case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG;
689 case SNDRV_PCM_FORMAT_S32_LE: return AFMT_S32_LE;
690 case SNDRV_PCM_FORMAT_S32_BE: return AFMT_S32_BE;
691 case SNDRV_PCM_FORMAT_S24_LE: return AFMT_S24_LE;
692 case SNDRV_PCM_FORMAT_S24_BE: return AFMT_S24_BE;
693 case SNDRV_PCM_FORMAT_S24_3LE: return AFMT_S24_PACKED;
694 case SNDRV_PCM_FORMAT_FLOAT: return AFMT_FLOAT;
695 case SNDRV_PCM_FORMAT_IEC958_SUBFRAME: return AFMT_SPDIF_RAW;
696 default: return -EINVAL;
700 static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
701 struct snd_pcm_hw_params *oss_params,
702 struct snd_pcm_hw_params *slave_params)
705 size_t oss_buffer_size, oss_period_size, oss_periods;
706 size_t min_period_size, max_period_size;
707 struct snd_pcm_runtime *runtime = substream->runtime;
708 size_t oss_frame_size;
710 oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) *
711 params_channels(oss_params) / 8;
713 oss_buffer_size = snd_pcm_plug_client_size(substream,
714 snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size;
715 oss_buffer_size = 1 << ld2(oss_buffer_size);
716 if (atomic_read(&substream->mmap_count)) {
717 if (oss_buffer_size > runtime->oss.mmap_bytes)
718 oss_buffer_size = runtime->oss.mmap_bytes;
721 if (substream->oss.setup.period_size > 16)
722 oss_period_size = substream->oss.setup.period_size;
723 else if (runtime->oss.fragshift) {
724 oss_period_size = 1 << runtime->oss.fragshift;
725 if (oss_period_size > oss_buffer_size / 2)
726 oss_period_size = oss_buffer_size / 2;
729 size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8;
731 oss_period_size = oss_buffer_size;
733 oss_period_size /= 2;
734 } while (oss_period_size > bytes_per_sec);
735 if (runtime->oss.subdivision == 0) {
737 if (oss_period_size / sd > 4096)
739 if (oss_period_size / sd < 4096)
742 sd = runtime->oss.subdivision;
743 oss_period_size /= sd;
744 if (oss_period_size < 16)
745 oss_period_size = 16;
748 min_period_size = snd_pcm_plug_client_size(substream,
749 snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL));
750 min_period_size *= oss_frame_size;
751 min_period_size = 1 << (ld2(min_period_size - 1) + 1);
752 if (oss_period_size < min_period_size)
753 oss_period_size = min_period_size;
755 max_period_size = snd_pcm_plug_client_size(substream,
756 snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL));
757 max_period_size *= oss_frame_size;
758 max_period_size = 1 << ld2(max_period_size);
759 if (oss_period_size > max_period_size)
760 oss_period_size = max_period_size;
762 oss_periods = oss_buffer_size / oss_period_size;
764 if (substream->oss.setup.periods > 1)
765 oss_periods = substream->oss.setup.periods;
767 s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL);
768 if (runtime->oss.maxfrags && s > runtime->oss.maxfrags)
769 s = runtime->oss.maxfrags;
773 s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL);
779 while (oss_period_size * oss_periods > oss_buffer_size)
780 oss_period_size /= 2;
782 if (oss_period_size < 16)
784 runtime->oss.period_bytes = oss_period_size;
785 runtime->oss.period_frames = 1;
786 runtime->oss.periods = oss_periods;
790 static int choose_rate(struct snd_pcm_substream *substream,
791 struct snd_pcm_hw_params *params, unsigned int best_rate)
793 struct snd_interval *it;
794 struct snd_pcm_hw_params *save;
795 unsigned int rate, prev;
797 save = kmalloc(sizeof(*save), GFP_KERNEL);
801 it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE);
803 /* try multiples of the best rate */
806 if (it->max < rate || (it->max == rate && it->openmax))
808 if (it->min < rate || (it->min == rate && !it->openmin)) {
810 ret = snd_pcm_hw_param_set(substream, params,
811 SNDRV_PCM_HW_PARAM_RATE,
813 if (ret == (int)rate) {
825 /* not found, use the nearest rate */
827 return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL);
830 static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
832 struct snd_pcm_runtime *runtime = substream->runtime;
833 struct snd_pcm_hw_params *params, *sparams;
834 struct snd_pcm_sw_params *sw_params;
835 ssize_t oss_buffer_size, oss_period_size;
836 size_t oss_frame_size;
839 int format, sformat, n;
840 struct snd_mask sformat_mask;
841 struct snd_mask mask;
843 if (mutex_lock_interruptible(&runtime->oss.params_lock))
845 sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL);
846 params = kmalloc(sizeof(*params), GFP_KERNEL);
847 sparams = kmalloc(sizeof(*sparams), GFP_KERNEL);
848 if (!sw_params || !params || !sparams) {
849 snd_printd("No memory\n");
854 if (atomic_read(&substream->mmap_count))
857 direct = substream->oss.setup.direct;
859 _snd_pcm_hw_params_any(sparams);
860 _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS);
861 _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0);
862 snd_mask_none(&mask);
863 if (atomic_read(&substream->mmap_count))
864 snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED);
866 snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED);
868 snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED);
870 err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask);
872 snd_printd("No usable accesses\n");
876 choose_rate(substream, sparams, runtime->oss.rate);
877 snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL);
879 format = snd_pcm_oss_format_from(runtime->oss.format);
881 sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT);
885 sformat = snd_pcm_plug_slave_format(format, &sformat_mask);
887 if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) {
888 for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) {
889 if (snd_mask_test(&sformat_mask, sformat) &&
890 snd_pcm_oss_format_to(sformat) >= 0)
893 if (sformat > SNDRV_PCM_FORMAT_LAST) {
894 snd_printd("Cannot find a format!!!\n");
899 err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0);
904 memcpy(params, sparams, sizeof(*params));
906 _snd_pcm_hw_params_any(params);
907 _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS,
908 SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0);
909 _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT,
910 snd_pcm_oss_format_from(runtime->oss.format), 0);
911 _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS,
912 runtime->oss.channels, 0);
913 _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE,
914 runtime->oss.rate, 0);
915 pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n",
916 params_access(params), params_format(params),
917 params_channels(params), params_rate(params));
919 pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n",
920 params_access(sparams), params_format(sparams),
921 params_channels(sparams), params_rate(sparams));
923 oss_frame_size = snd_pcm_format_physical_width(params_format(params)) *
924 params_channels(params) / 8;
926 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
927 snd_pcm_oss_plugin_clear(substream);
929 /* add necessary plugins */
930 snd_pcm_oss_plugin_clear(substream);
931 if ((err = snd_pcm_plug_format_plugins(substream,
934 snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err);
935 snd_pcm_oss_plugin_clear(substream);
938 if (runtime->oss.plugin_first) {
939 struct snd_pcm_plugin *plugin;
940 if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) {
941 snd_printd("snd_pcm_plugin_build_io failed: %i\n", err);
942 snd_pcm_oss_plugin_clear(substream);
945 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
946 err = snd_pcm_plugin_append(plugin);
948 err = snd_pcm_plugin_insert(plugin);
951 snd_pcm_oss_plugin_clear(substream);
958 err = snd_pcm_oss_period_size(substream, params, sparams);
962 n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size);
963 err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL);
967 err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS,
968 runtime->oss.periods, NULL);
972 snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
974 if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) {
975 snd_printd("HW_PARAMS failed: %i\n", err);
979 memset(sw_params, 0, sizeof(*sw_params));
980 if (runtime->oss.trigger) {
981 sw_params->start_threshold = 1;
983 sw_params->start_threshold = runtime->boundary;
985 if (atomic_read(&substream->mmap_count) ||
986 substream->stream == SNDRV_PCM_STREAM_CAPTURE)
987 sw_params->stop_threshold = runtime->boundary;
989 sw_params->stop_threshold = runtime->buffer_size;
990 sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE;
991 sw_params->period_step = 1;
992 sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
993 1 : runtime->period_size;
994 if (atomic_read(&substream->mmap_count) ||
995 substream->oss.setup.nosilence) {
996 sw_params->silence_threshold = 0;
997 sw_params->silence_size = 0;
999 snd_pcm_uframes_t frames;
1000 frames = runtime->period_size + 16;
1001 if (frames > runtime->buffer_size)
1002 frames = runtime->buffer_size;
1003 sw_params->silence_threshold = frames;
1004 sw_params->silence_size = frames;
1007 if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) {
1008 snd_printd("SW_PARAMS failed: %i\n", err);
1012 runtime->oss.periods = params_periods(sparams);
1013 oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams));
1014 if (oss_period_size < 0) {
1018 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
1019 if (runtime->oss.plugin_first) {
1020 err = snd_pcm_plug_alloc(substream, oss_period_size);
1025 oss_period_size *= oss_frame_size;
1027 oss_buffer_size = oss_period_size * runtime->oss.periods;
1028 if (oss_buffer_size < 0) {
1033 runtime->oss.period_bytes = oss_period_size;
1034 runtime->oss.buffer_bytes = oss_buffer_size;
1036 pdprintf("oss: period bytes = %i, buffer bytes = %i\n",
1037 runtime->oss.period_bytes,
1038 runtime->oss.buffer_bytes);
1039 pdprintf("slave: period_size = %i, buffer_size = %i\n",
1040 params_period_size(sparams),
1041 params_buffer_size(sparams));
1043 runtime->oss.format = snd_pcm_oss_format_to(params_format(params));
1044 runtime->oss.channels = params_channels(params);
1045 runtime->oss.rate = params_rate(params);
1047 runtime->oss.params = 0;
1048 runtime->oss.prepare = 1;
1049 vfree(runtime->oss.buffer);
1050 runtime->oss.buffer = vmalloc(runtime->oss.period_bytes);
1051 runtime->oss.buffer_used = 0;
1052 if (runtime->dma_area)
1053 snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes));
1055 runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size);
1062 mutex_unlock(&runtime->oss.params_lock);
1066 static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_file, struct snd_pcm_substream **r_substream)
1069 struct snd_pcm_substream *asubstream = NULL, *substream;
1071 for (idx = 0; idx < 2; idx++) {
1072 substream = pcm_oss_file->streams[idx];
1073 if (substream == NULL)
1075 if (asubstream == NULL)
1076 asubstream = substream;
1077 if (substream->runtime->oss.params) {
1078 err = snd_pcm_oss_change_params(substream);
1086 *r_substream = asubstream;
1090 static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream)
1093 struct snd_pcm_runtime *runtime = substream->runtime;
1095 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL);
1097 snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n");
1100 runtime->oss.prepare = 0;
1101 runtime->oss.prev_hw_ptr_interrupt = 0;
1102 runtime->oss.period_ptr = 0;
1103 runtime->oss.buffer_used = 0;
1108 static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream)
1110 struct snd_pcm_runtime *runtime;
1113 if (substream == NULL)
1115 runtime = substream->runtime;
1116 if (runtime->oss.params) {
1117 err = snd_pcm_oss_change_params(substream);
1121 if (runtime->oss.prepare) {
1122 err = snd_pcm_oss_prepare(substream);
1129 static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream *substream, snd_pcm_sframes_t *delay)
1131 struct snd_pcm_runtime *runtime;
1132 snd_pcm_uframes_t frames;
1136 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay);
1139 runtime = substream->runtime;
1140 if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size)
1142 /* in case of overrun, skip whole periods like OSS/Linux driver does */
1143 /* until avail(delay) <= buffer_size */
1144 frames = (*delay - runtime->buffer_size) + runtime->period_size - 1;
1145 frames /= runtime->period_size;
1146 frames *= runtime->period_size;
1147 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames);
1154 snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel)
1156 struct snd_pcm_runtime *runtime = substream->runtime;
1159 if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
1160 runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
1162 if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
1163 printk(KERN_DEBUG "pcm_oss: write: "
1164 "recovering from XRUN\n");
1166 printk(KERN_DEBUG "pcm_oss: write: "
1167 "recovering from SUSPEND\n");
1169 ret = snd_pcm_oss_prepare(substream);
1175 fs = snd_enter_user();
1176 ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames);
1179 ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames);
1181 if (ret != -EPIPE && ret != -ESTRPIPE)
1183 /* test, if we can't store new data, because the stream */
1184 /* has not been started */
1185 if (runtime->status->state == SNDRV_PCM_STATE_PREPARED)
1191 snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel)
1193 struct snd_pcm_runtime *runtime = substream->runtime;
1194 snd_pcm_sframes_t delay;
1197 if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
1198 runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
1200 if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
1201 printk(KERN_DEBUG "pcm_oss: read: "
1202 "recovering from XRUN\n");
1204 printk(KERN_DEBUG "pcm_oss: read: "
1205 "recovering from SUSPEND\n");
1207 ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL);
1210 } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) {
1211 ret = snd_pcm_oss_prepare(substream);
1215 ret = snd_pcm_oss_capture_position_fixup(substream, &delay);
1220 fs = snd_enter_user();
1221 ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames);
1224 ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames);
1226 if (ret == -EPIPE) {
1227 if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) {
1228 ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
1234 if (ret != -ESTRPIPE)
1240 snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel)
1242 struct snd_pcm_runtime *runtime = substream->runtime;
1245 if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
1246 runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
1248 if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
1249 printk(KERN_DEBUG "pcm_oss: writev: "
1250 "recovering from XRUN\n");
1252 printk(KERN_DEBUG "pcm_oss: writev: "
1253 "recovering from SUSPEND\n");
1255 ret = snd_pcm_oss_prepare(substream);
1261 fs = snd_enter_user();
1262 ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames);
1265 ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames);
1267 if (ret != -EPIPE && ret != -ESTRPIPE)
1270 /* test, if we can't store new data, because the stream */
1271 /* has not been started */
1272 if (runtime->status->state == SNDRV_PCM_STATE_PREPARED)
1278 snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel)
1280 struct snd_pcm_runtime *runtime = substream->runtime;
1283 if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
1284 runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
1286 if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
1287 printk(KERN_DEBUG "pcm_oss: readv: "
1288 "recovering from XRUN\n");
1290 printk(KERN_DEBUG "pcm_oss: readv: "
1291 "recovering from SUSPEND\n");
1293 ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL);
1296 } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) {
1297 ret = snd_pcm_oss_prepare(substream);
1303 fs = snd_enter_user();
1304 ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames);
1307 ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames);
1309 if (ret != -EPIPE && ret != -ESTRPIPE)
1315 static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel)
1317 struct snd_pcm_runtime *runtime = substream->runtime;
1318 snd_pcm_sframes_t frames, frames1;
1319 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
1320 if (runtime->oss.plugin_first) {
1321 struct snd_pcm_plugin_channel *channels;
1322 size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8;
1324 if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes))
1326 buf = runtime->oss.buffer;
1328 frames = bytes / oss_frame_bytes;
1329 frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels);
1332 frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1);
1335 bytes = frames1 * oss_frame_bytes;
1339 frames = bytes_to_frames(runtime, bytes);
1340 frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel);
1343 bytes = frames_to_bytes(runtime, frames1);
1348 static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes)
1352 struct snd_pcm_runtime *runtime = substream->runtime;
1354 if (atomic_read(&substream->mmap_count))
1357 if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
1359 mutex_lock(&runtime->oss.params_lock);
1361 if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
1363 if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes)
1364 tmp = runtime->oss.period_bytes - runtime->oss.buffer_used;
1366 if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) {
1371 runtime->oss.buffer_used += tmp;
1375 if (substream->oss.setup.partialfrag ||
1376 runtime->oss.buffer_used == runtime->oss.period_bytes) {
1377 tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr,
1378 runtime->oss.buffer_used - runtime->oss.period_ptr, 1);
1381 runtime->oss.bytes += tmp;
1382 runtime->oss.period_ptr += tmp;
1383 runtime->oss.period_ptr %= runtime->oss.period_bytes;
1384 if (runtime->oss.period_ptr == 0 ||
1385 runtime->oss.period_ptr == runtime->oss.buffer_used)
1386 runtime->oss.buffer_used = 0;
1387 else if ((substream->f_flags & O_NONBLOCK) != 0) {
1393 tmp = snd_pcm_oss_write2(substream,
1394 (const char __force *)buf,
1395 runtime->oss.period_bytes, 0);
1398 runtime->oss.bytes += tmp;
1402 if ((substream->f_flags & O_NONBLOCK) != 0 &&
1403 tmp != runtime->oss.period_bytes)
1407 mutex_unlock(&runtime->oss.params_lock);
1411 mutex_unlock(&runtime->oss.params_lock);
1412 return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
1415 static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, size_t bytes, int in_kernel)
1417 struct snd_pcm_runtime *runtime = substream->runtime;
1418 snd_pcm_sframes_t frames, frames1;
1419 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
1420 char __user *final_dst = (char __user *)buf;
1421 if (runtime->oss.plugin_first) {
1422 struct snd_pcm_plugin_channel *channels;
1423 size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8;
1425 buf = runtime->oss.buffer;
1426 frames = bytes / oss_frame_bytes;
1427 frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels);
1430 frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1);
1433 bytes = frames1 * oss_frame_bytes;
1434 if (!in_kernel && copy_to_user(final_dst, buf, bytes))
1439 frames = bytes_to_frames(runtime, bytes);
1440 frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel);
1443 bytes = frames_to_bytes(runtime, frames1);
1448 static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes)
1452 struct snd_pcm_runtime *runtime = substream->runtime;
1454 if (atomic_read(&substream->mmap_count))
1457 if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
1459 mutex_lock(&runtime->oss.params_lock);
1461 if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
1462 if (runtime->oss.buffer_used == 0) {
1463 tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1);
1466 runtime->oss.bytes += tmp;
1467 runtime->oss.period_ptr = tmp;
1468 runtime->oss.buffer_used = tmp;
1471 if ((size_t) tmp > runtime->oss.buffer_used)
1472 tmp = runtime->oss.buffer_used;
1473 if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) {
1480 runtime->oss.buffer_used -= tmp;
1482 tmp = snd_pcm_oss_read2(substream, (char __force *)buf,
1483 runtime->oss.period_bytes, 0);
1486 runtime->oss.bytes += tmp;
1492 mutex_unlock(&runtime->oss.params_lock);
1496 mutex_unlock(&runtime->oss.params_lock);
1497 return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
1500 static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file)
1502 struct snd_pcm_substream *substream;
1504 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1505 if (substream != NULL) {
1506 snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
1507 substream->runtime->oss.prepare = 1;
1509 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
1510 if (substream != NULL) {
1511 snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
1512 substream->runtime->oss.prepare = 1;
1517 static int snd_pcm_oss_post(struct snd_pcm_oss_file *pcm_oss_file)
1519 struct snd_pcm_substream *substream;
1522 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1523 if (substream != NULL) {
1524 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
1526 snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL);
1528 /* note: all errors from the start action are ignored */
1529 /* OSS apps do not know, how to handle them */
1533 static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size)
1535 struct snd_pcm_runtime *runtime;
1540 runtime = substream->runtime;
1541 init_waitqueue_entry(&wait, current);
1542 add_wait_queue(&runtime->sleep, &wait);
1544 printk(KERN_DEBUG "sync1: size = %li\n", size);
1547 result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1);
1549 runtime->oss.buffer_used = 0;
1553 if (result != 0 && result != -EAGAIN)
1556 set_current_state(TASK_INTERRUPTIBLE);
1557 snd_pcm_stream_lock_irq(substream);
1558 res = runtime->status->state;
1559 snd_pcm_stream_unlock_irq(substream);
1560 if (res != SNDRV_PCM_STATE_RUNNING) {
1561 set_current_state(TASK_RUNNING);
1564 res = schedule_timeout(10 * HZ);
1565 if (signal_pending(current)) {
1566 result = -ERESTARTSYS;
1570 snd_printk(KERN_ERR "OSS sync error - DMA timeout\n");
1575 remove_wait_queue(&runtime->sleep, &wait);
1579 static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
1582 unsigned int saved_f_flags;
1583 struct snd_pcm_substream *substream;
1584 struct snd_pcm_runtime *runtime;
1585 snd_pcm_format_t format;
1586 unsigned long width;
1589 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1590 if (substream != NULL) {
1591 runtime = substream->runtime;
1592 if (atomic_read(&substream->mmap_count))
1594 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
1596 format = snd_pcm_oss_format_from(runtime->oss.format);
1597 width = snd_pcm_format_physical_width(format);
1598 mutex_lock(&runtime->oss.params_lock);
1599 if (runtime->oss.buffer_used > 0) {
1601 printk(KERN_DEBUG "sync: buffer_used\n");
1603 size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width;
1604 snd_pcm_format_set_silence(format,
1605 runtime->oss.buffer + runtime->oss.buffer_used,
1607 err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes);
1609 mutex_unlock(&runtime->oss.params_lock);
1612 } else if (runtime->oss.period_ptr > 0) {
1614 printk(KERN_DEBUG "sync: period_ptr\n");
1616 size = runtime->oss.period_bytes - runtime->oss.period_ptr;
1617 snd_pcm_format_set_silence(format,
1618 runtime->oss.buffer,
1620 err = snd_pcm_oss_sync1(substream, size);
1622 mutex_unlock(&runtime->oss.params_lock);
1627 * The ALSA's period might be a bit large than OSS one.
1628 * Fill the remain portion of ALSA period with zeros.
1630 size = runtime->control->appl_ptr % runtime->period_size;
1632 size = runtime->period_size - size;
1633 if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) {
1634 size = (runtime->frame_bits * size) / 8;
1637 size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes;
1640 size1 /= runtime->sample_bits;
1641 snd_pcm_format_set_silence(runtime->format,
1642 runtime->oss.buffer,
1644 size1 /= runtime->channels; /* frames */
1645 fs = snd_enter_user();
1646 snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1);
1649 } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) {
1650 void __user *buffers[runtime->channels];
1651 memset(buffers, 0, runtime->channels * sizeof(void *));
1652 snd_pcm_lib_writev(substream, buffers, size);
1655 mutex_unlock(&runtime->oss.params_lock);
1657 * finish sync: drain the buffer
1660 saved_f_flags = substream->f_flags;
1661 substream->f_flags &= ~O_NONBLOCK;
1662 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL);
1663 substream->f_flags = saved_f_flags;
1666 runtime->oss.prepare = 1;
1669 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
1670 if (substream != NULL) {
1671 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
1673 runtime = substream->runtime;
1674 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
1677 runtime->oss.buffer_used = 0;
1678 runtime->oss.prepare = 1;
1683 static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate)
1687 for (idx = 1; idx >= 0; --idx) {
1688 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1689 struct snd_pcm_runtime *runtime;
1690 if (substream == NULL)
1692 runtime = substream->runtime;
1695 else if (rate > 192000)
1697 if (runtime->oss.rate != rate) {
1698 runtime->oss.params = 1;
1699 runtime->oss.rate = rate;
1702 return snd_pcm_oss_get_rate(pcm_oss_file);
1705 static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file)
1707 struct snd_pcm_substream *substream;
1710 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1712 return substream->runtime->oss.rate;
1715 static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsigned int channels)
1722 for (idx = 1; idx >= 0; --idx) {
1723 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1724 struct snd_pcm_runtime *runtime;
1725 if (substream == NULL)
1727 runtime = substream->runtime;
1728 if (runtime->oss.channels != channels) {
1729 runtime->oss.params = 1;
1730 runtime->oss.channels = channels;
1733 return snd_pcm_oss_get_channels(pcm_oss_file);
1736 static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file)
1738 struct snd_pcm_substream *substream;
1741 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1743 return substream->runtime->oss.channels;
1746 static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file *pcm_oss_file)
1748 struct snd_pcm_substream *substream;
1751 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1753 return substream->runtime->oss.period_bytes;
1756 static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file)
1758 struct snd_pcm_substream *substream;
1761 struct snd_pcm_hw_params *params;
1762 unsigned int formats = 0;
1763 struct snd_mask format_mask;
1766 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1768 if (atomic_read(&substream->mmap_count))
1771 direct = substream->oss.setup.direct;
1773 return AFMT_MU_LAW | AFMT_U8 |
1774 AFMT_S16_LE | AFMT_S16_BE |
1775 AFMT_S8 | AFMT_U16_LE |
1777 AFMT_S32_LE | AFMT_S32_BE |
1778 AFMT_S24_LE | AFMT_S24_BE |
1780 params = kmalloc(sizeof(*params), GFP_KERNEL);
1783 _snd_pcm_hw_params_any(params);
1784 err = snd_pcm_hw_refine(substream, params);
1785 format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
1789 for (fmt = 0; fmt < 32; ++fmt) {
1790 if (snd_mask_test(&format_mask, fmt)) {
1791 int f = snd_pcm_oss_format_to(fmt);
1799 static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format)
1803 if (format != AFMT_QUERY) {
1804 formats = snd_pcm_oss_get_formats(pcm_oss_file);
1807 if (!(formats & format))
1809 for (idx = 1; idx >= 0; --idx) {
1810 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1811 struct snd_pcm_runtime *runtime;
1812 if (substream == NULL)
1814 runtime = substream->runtime;
1815 if (runtime->oss.format != format) {
1816 runtime->oss.params = 1;
1817 runtime->oss.format = format;
1821 return snd_pcm_oss_get_format(pcm_oss_file);
1824 static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file)
1826 struct snd_pcm_substream *substream;
1829 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1831 return substream->runtime->oss.format;
1834 static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int subdivide)
1836 struct snd_pcm_runtime *runtime;
1838 if (substream == NULL)
1840 runtime = substream->runtime;
1841 if (subdivide == 0) {
1842 subdivide = runtime->oss.subdivision;
1847 if (runtime->oss.subdivision || runtime->oss.fragshift)
1849 if (subdivide != 1 && subdivide != 2 && subdivide != 4 &&
1850 subdivide != 8 && subdivide != 16)
1852 runtime->oss.subdivision = subdivide;
1853 runtime->oss.params = 1;
1857 static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int subdivide)
1859 int err = -EINVAL, idx;
1861 for (idx = 1; idx >= 0; --idx) {
1862 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1863 if (substream == NULL)
1865 if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0)
1871 static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsigned int val)
1873 struct snd_pcm_runtime *runtime;
1875 if (substream == NULL)
1877 runtime = substream->runtime;
1878 if (runtime->oss.subdivision || runtime->oss.fragshift)
1880 runtime->oss.fragshift = val & 0xffff;
1881 runtime->oss.maxfrags = (val >> 16) & 0xffff;
1882 if (runtime->oss.fragshift < 4) /* < 16 */
1883 runtime->oss.fragshift = 4;
1884 if (runtime->oss.maxfrags < 2)
1885 runtime->oss.maxfrags = 2;
1886 runtime->oss.params = 1;
1890 static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsigned int val)
1892 int err = -EINVAL, idx;
1894 for (idx = 1; idx >= 0; --idx) {
1895 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1896 if (substream == NULL)
1898 if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0)
1904 static int snd_pcm_oss_nonblock(struct file * file)
1906 file->f_flags |= O_NONBLOCK;
1910 static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res)
1913 if (substream == NULL) {
1914 res &= ~DSP_CAP_DUPLEX;
1917 #ifdef DSP_CAP_MULTI
1918 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1919 if (substream->pstr->substream_count > 1)
1920 res |= DSP_CAP_MULTI;
1922 /* DSP_CAP_REALTIME is set all times: */
1923 /* all ALSA drivers can return actual pointer in ring buffer */
1924 #if defined(DSP_CAP_REALTIME) && 0
1926 struct snd_pcm_runtime *runtime = substream->runtime;
1927 if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH))
1928 res &= ~DSP_CAP_REALTIME;
1934 static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file)
1938 result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME;
1939 for (idx = 0; idx < 2; idx++) {
1940 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1941 result = snd_pcm_oss_get_caps1(substream, result);
1943 result |= 0x0001; /* revision - same as SB AWE 64 */
1947 static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, snd_pcm_uframes_t hw_ptr)
1949 struct snd_pcm_runtime *runtime = substream->runtime;
1950 snd_pcm_uframes_t appl_ptr;
1951 appl_ptr = hw_ptr + runtime->buffer_size;
1952 appl_ptr %= runtime->boundary;
1953 runtime->control->appl_ptr = appl_ptr;
1956 static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int trigger)
1958 struct snd_pcm_runtime *runtime;
1959 struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
1963 printk(KERN_DEBUG "pcm_oss: trigger = 0x%x\n", trigger);
1966 psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1967 csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
1970 if ((err = snd_pcm_oss_make_ready(psubstream)) < 0)
1974 if ((err = snd_pcm_oss_make_ready(csubstream)) < 0)
1978 runtime = psubstream->runtime;
1979 if (trigger & PCM_ENABLE_OUTPUT) {
1980 if (runtime->oss.trigger)
1982 if (atomic_read(&psubstream->mmap_count))
1983 snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt);
1984 runtime->oss.trigger = 1;
1985 runtime->start_threshold = 1;
1986 cmd = SNDRV_PCM_IOCTL_START;
1988 if (!runtime->oss.trigger)
1990 runtime->oss.trigger = 0;
1991 runtime->start_threshold = runtime->boundary;
1992 cmd = SNDRV_PCM_IOCTL_DROP;
1993 runtime->oss.prepare = 1;
1995 err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL);
2001 runtime = csubstream->runtime;
2002 if (trigger & PCM_ENABLE_INPUT) {
2003 if (runtime->oss.trigger)
2005 runtime->oss.trigger = 1;
2006 runtime->start_threshold = 1;
2007 cmd = SNDRV_PCM_IOCTL_START;
2009 if (!runtime->oss.trigger)
2011 runtime->oss.trigger = 0;
2012 runtime->start_threshold = runtime->boundary;
2013 cmd = SNDRV_PCM_IOCTL_DROP;
2014 runtime->oss.prepare = 1;
2016 err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL);
2024 static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file *pcm_oss_file)
2026 struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
2029 psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2030 csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2031 if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger)
2032 result |= PCM_ENABLE_OUTPUT;
2033 if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger)
2034 result |= PCM_ENABLE_INPUT;
2038 static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file *pcm_oss_file)
2040 struct snd_pcm_substream *substream;
2041 struct snd_pcm_runtime *runtime;
2042 snd_pcm_sframes_t delay;
2045 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2046 if (substream == NULL)
2048 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
2050 runtime = substream->runtime;
2051 if (runtime->oss.params || runtime->oss.prepare)
2053 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay);
2055 delay = 0; /* hack for broken OSS applications */
2058 return snd_pcm_oss_bytes(substream, delay);
2061 static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct count_info __user * _info)
2063 struct snd_pcm_substream *substream;
2064 struct snd_pcm_runtime *runtime;
2065 snd_pcm_sframes_t delay;
2067 struct count_info info;
2072 substream = pcm_oss_file->streams[stream];
2073 if (substream == NULL)
2075 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
2077 runtime = substream->runtime;
2078 if (runtime->oss.params || runtime->oss.prepare) {
2079 memset(&info, 0, sizeof(info));
2080 if (copy_to_user(_info, &info, sizeof(info)))
2084 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
2085 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay);
2086 if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) {
2091 fixup = runtime->oss.buffer_used;
2094 err = snd_pcm_oss_capture_position_fixup(substream, &delay);
2095 fixup = -runtime->oss.buffer_used;
2099 info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size);
2100 if (atomic_read(&substream->mmap_count)) {
2101 snd_pcm_sframes_t n;
2102 n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt;
2104 n += runtime->boundary;
2105 info.blocks = n / runtime->period_size;
2106 runtime->oss.prev_hw_ptr_interrupt = delay;
2107 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
2108 snd_pcm_oss_simulate_fill(substream, delay);
2109 info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX;
2111 delay = snd_pcm_oss_bytes(substream, delay);
2112 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
2113 if (substream->oss.setup.buggyptr)
2114 info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes;
2116 info.blocks = (delay + fixup) / runtime->oss.period_bytes;
2117 info.bytes = (runtime->oss.bytes - delay) & INT_MAX;
2120 info.blocks = delay / runtime->oss.period_bytes;
2121 info.bytes = (runtime->oss.bytes + delay) & INT_MAX;
2124 if (copy_to_user(_info, &info, sizeof(info)))
2129 static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct audio_buf_info __user *_info)
2131 struct snd_pcm_substream *substream;
2132 struct snd_pcm_runtime *runtime;
2133 snd_pcm_sframes_t avail;
2135 struct audio_buf_info info;
2140 substream = pcm_oss_file->streams[stream];
2141 if (substream == NULL)
2143 runtime = substream->runtime;
2145 if (runtime->oss.params &&
2146 (err = snd_pcm_oss_change_params(substream)) < 0)
2149 info.fragsize = runtime->oss.period_bytes;
2150 info.fragstotal = runtime->periods;
2151 if (runtime->oss.prepare) {
2152 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
2153 info.bytes = runtime->oss.period_bytes * runtime->oss.periods;
2154 info.fragments = runtime->oss.periods;
2160 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
2161 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail);
2162 if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) {
2163 avail = runtime->buffer_size;
2167 avail = runtime->buffer_size - avail;
2168 fixup = -runtime->oss.buffer_used;
2171 err = snd_pcm_oss_capture_position_fixup(substream, &avail);
2172 fixup = runtime->oss.buffer_used;
2176 info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup;
2177 info.fragments = info.bytes / runtime->oss.period_bytes;
2181 printk(KERN_DEBUG "pcm_oss: space: bytes = %i, fragments = %i, "
2182 "fragstotal = %i, fragsize = %i\n",
2183 info.bytes, info.fragments, info.fragstotal, info.fragsize);
2185 if (copy_to_user(_info, &info, sizeof(info)))
2190 static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct buffmem_desc __user * _info)
2192 // it won't be probably implemented
2193 // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n");
2197 static const char *strip_task_path(const char *path)
2199 const char *ptr, *ptrl = NULL;
2200 for (ptr = path; *ptr; ptr++) {
2207 static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream,
2208 const char *task_name,
2209 struct snd_pcm_oss_setup *rsetup)
2211 struct snd_pcm_oss_setup *setup;
2213 mutex_lock(&pcm->streams[stream].oss.setup_mutex);
2215 for (setup = pcm->streams[stream].oss.setup_list; setup;
2216 setup = setup->next) {
2217 if (!strcmp(setup->task_name, task_name))
2220 } while ((task_name = strip_task_path(task_name)) != NULL);
2224 mutex_unlock(&pcm->streams[stream].oss.setup_mutex);
2227 static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream)
2229 struct snd_pcm_runtime *runtime;
2230 runtime = substream->runtime;
2231 vfree(runtime->oss.buffer);
2232 runtime->oss.buffer = NULL;
2233 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
2234 snd_pcm_oss_plugin_clear(substream);
2236 substream->oss.oss = 0;
2239 static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream,
2240 struct snd_pcm_oss_setup *setup,
2243 struct snd_pcm_runtime *runtime;
2245 substream->oss.oss = 1;
2246 substream->oss.setup = *setup;
2247 if (setup->nonblock)
2248 substream->f_flags |= O_NONBLOCK;
2249 else if (setup->block)
2250 substream->f_flags &= ~O_NONBLOCK;
2251 runtime = substream->runtime;
2252 runtime->oss.params = 1;
2253 runtime->oss.trigger = 1;
2254 runtime->oss.rate = 8000;
2255 mutex_init(&runtime->oss.params_lock);
2256 switch (SNDRV_MINOR_OSS_DEVICE(minor)) {
2257 case SNDRV_MINOR_OSS_PCM_8:
2258 runtime->oss.format = AFMT_U8;
2260 case SNDRV_MINOR_OSS_PCM_16:
2261 runtime->oss.format = AFMT_S16_LE;
2264 runtime->oss.format = AFMT_MU_LAW;
2266 runtime->oss.channels = 1;
2267 runtime->oss.fragshift = 0;
2268 runtime->oss.maxfrags = 0;
2269 runtime->oss.subdivision = 0;
2270 substream->pcm_release = snd_pcm_oss_release_substream;
2273 static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file)
2278 for (cidx = 0; cidx < 2; ++cidx) {
2279 struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx];
2281 snd_pcm_release_substream(substream);
2283 kfree(pcm_oss_file);
2287 static int snd_pcm_oss_open_file(struct file *file,
2288 struct snd_pcm *pcm,
2289 struct snd_pcm_oss_file **rpcm_oss_file,
2291 struct snd_pcm_oss_setup *setup)
2294 struct snd_pcm_oss_file *pcm_oss_file;
2295 struct snd_pcm_substream *substream;
2296 fmode_t f_mode = file->f_mode;
2299 *rpcm_oss_file = NULL;
2301 pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL);
2302 if (pcm_oss_file == NULL)
2305 if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) &&
2306 (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX))
2307 f_mode = FMODE_WRITE;
2309 file->f_flags &= ~O_APPEND;
2310 for (idx = 0; idx < 2; idx++) {
2311 if (setup[idx].disable)
2313 if (! pcm->streams[idx].substream_count)
2314 continue; /* no matching substream */
2315 if (idx == SNDRV_PCM_STREAM_PLAYBACK) {
2316 if (! (f_mode & FMODE_WRITE))
2319 if (! (f_mode & FMODE_READ))
2322 err = snd_pcm_open_substream(pcm, idx, file, &substream);
2324 snd_pcm_oss_release_file(pcm_oss_file);
2328 pcm_oss_file->streams[idx] = substream;
2329 substream->file = pcm_oss_file;
2330 snd_pcm_oss_init_substream(substream, &setup[idx], minor);
2333 if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) {
2334 snd_pcm_oss_release_file(pcm_oss_file);
2338 file->private_data = pcm_oss_file;
2340 *rpcm_oss_file = pcm_oss_file;
2345 static int snd_task_name(struct task_struct *task, char *name, size_t size)
2349 if (snd_BUG_ON(!task || !name || size < 2))
2351 for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++)
2352 name[idx] = task->comm[idx];
2357 static int snd_pcm_oss_open(struct inode *inode, struct file *file)
2361 struct snd_pcm *pcm;
2362 struct snd_pcm_oss_file *pcm_oss_file;
2363 struct snd_pcm_oss_setup setup[2];
2367 pcm = snd_lookup_oss_minor_data(iminor(inode),
2368 SNDRV_OSS_DEVICE_TYPE_PCM);
2373 err = snd_card_file_add(pcm->card, file);
2376 if (!try_module_get(pcm->card->module)) {
2380 if (snd_task_name(current, task_name, sizeof(task_name)) < 0) {
2384 memset(setup, 0, sizeof(setup));
2385 if (file->f_mode & FMODE_WRITE)
2386 snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK,
2387 task_name, &setup[0]);
2388 if (file->f_mode & FMODE_READ)
2389 snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE,
2390 task_name, &setup[1]);
2392 nonblock = !!(file->f_flags & O_NONBLOCK);
2394 nonblock = nonblock_open;
2396 init_waitqueue_entry(&wait, current);
2397 add_wait_queue(&pcm->open_wait, &wait);
2398 mutex_lock(&pcm->open_mutex);
2400 err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file,
2401 iminor(inode), setup);
2404 if (err == -EAGAIN) {
2411 set_current_state(TASK_INTERRUPTIBLE);
2412 mutex_unlock(&pcm->open_mutex);
2414 mutex_lock(&pcm->open_mutex);
2415 if (signal_pending(current)) {
2420 remove_wait_queue(&pcm->open_wait, &wait);
2421 mutex_unlock(&pcm->open_mutex);
2427 module_put(pcm->card->module);
2429 snd_card_file_remove(pcm->card, file);
2434 static int snd_pcm_oss_release(struct inode *inode, struct file *file)
2436 struct snd_pcm *pcm;
2437 struct snd_pcm_substream *substream;
2438 struct snd_pcm_oss_file *pcm_oss_file;
2440 pcm_oss_file = file->private_data;
2441 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2442 if (substream == NULL)
2443 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2444 if (snd_BUG_ON(!substream))
2446 pcm = substream->pcm;
2447 if (!pcm->card->shutdown)
2448 snd_pcm_oss_sync(pcm_oss_file);
2449 mutex_lock(&pcm->open_mutex);
2450 snd_pcm_oss_release_file(pcm_oss_file);
2451 mutex_unlock(&pcm->open_mutex);
2452 wake_up(&pcm->open_wait);
2453 module_put(pcm->card->module);
2454 snd_card_file_remove(pcm->card, file);
2458 static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2460 struct snd_pcm_oss_file *pcm_oss_file;
2461 int __user *p = (int __user *)arg;
2464 pcm_oss_file = file->private_data;
2465 if (cmd == OSS_GETVERSION)
2466 return put_user(SNDRV_OSS_VERSION, p);
2467 if (cmd == OSS_ALSAEMULVER)
2468 return put_user(1, p);
2469 #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE))
2470 if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */
2471 struct snd_pcm_substream *substream;
2473 for (idx = 0; idx < 2; ++idx) {
2474 substream = pcm_oss_file->streams[idx];
2475 if (substream != NULL)
2478 if (snd_BUG_ON(idx >= 2))
2480 return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg);
2483 if (((cmd >> 8) & 0xff) != 'P')
2486 printk(KERN_DEBUG "pcm_oss: ioctl = 0x%x\n", cmd);
2489 case SNDCTL_DSP_RESET:
2490 return snd_pcm_oss_reset(pcm_oss_file);
2491 case SNDCTL_DSP_SYNC:
2492 return snd_pcm_oss_sync(pcm_oss_file);
2493 case SNDCTL_DSP_SPEED:
2494 if (get_user(res, p))
2496 if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0)
2498 return put_user(res, p);
2499 case SOUND_PCM_READ_RATE:
2500 res = snd_pcm_oss_get_rate(pcm_oss_file);
2503 return put_user(res, p);
2504 case SNDCTL_DSP_STEREO:
2505 if (get_user(res, p))
2507 res = res > 0 ? 2 : 1;
2508 if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0)
2510 return put_user(--res, p);
2511 case SNDCTL_DSP_GETBLKSIZE:
2512 res = snd_pcm_oss_get_block_size(pcm_oss_file);
2515 return put_user(res, p);
2516 case SNDCTL_DSP_SETFMT:
2517 if (get_user(res, p))
2519 res = snd_pcm_oss_set_format(pcm_oss_file, res);
2522 return put_user(res, p);
2523 case SOUND_PCM_READ_BITS:
2524 res = snd_pcm_oss_get_format(pcm_oss_file);
2527 return put_user(res, p);
2528 case SNDCTL_DSP_CHANNELS:
2529 if (get_user(res, p))
2531 res = snd_pcm_oss_set_channels(pcm_oss_file, res);
2534 return put_user(res, p);
2535 case SOUND_PCM_READ_CHANNELS:
2536 res = snd_pcm_oss_get_channels(pcm_oss_file);
2539 return put_user(res, p);
2540 case SOUND_PCM_WRITE_FILTER:
2541 case SOUND_PCM_READ_FILTER:
2543 case SNDCTL_DSP_POST:
2544 return snd_pcm_oss_post(pcm_oss_file);
2545 case SNDCTL_DSP_SUBDIVIDE:
2546 if (get_user(res, p))
2548 res = snd_pcm_oss_set_subdivide(pcm_oss_file, res);
2551 return put_user(res, p);
2552 case SNDCTL_DSP_SETFRAGMENT:
2553 if (get_user(res, p))
2555 return snd_pcm_oss_set_fragment(pcm_oss_file, res);
2556 case SNDCTL_DSP_GETFMTS:
2557 res = snd_pcm_oss_get_formats(pcm_oss_file);
2560 return put_user(res, p);
2561 case SNDCTL_DSP_GETOSPACE:
2562 case SNDCTL_DSP_GETISPACE:
2563 return snd_pcm_oss_get_space(pcm_oss_file,
2564 cmd == SNDCTL_DSP_GETISPACE ?
2565 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK,
2566 (struct audio_buf_info __user *) arg);
2567 case SNDCTL_DSP_NONBLOCK:
2568 return snd_pcm_oss_nonblock(file);
2569 case SNDCTL_DSP_GETCAPS:
2570 res = snd_pcm_oss_get_caps(pcm_oss_file);
2573 return put_user(res, p);
2574 case SNDCTL_DSP_GETTRIGGER:
2575 res = snd_pcm_oss_get_trigger(pcm_oss_file);
2578 return put_user(res, p);
2579 case SNDCTL_DSP_SETTRIGGER:
2580 if (get_user(res, p))
2582 return snd_pcm_oss_set_trigger(pcm_oss_file, res);
2583 case SNDCTL_DSP_GETIPTR:
2584 case SNDCTL_DSP_GETOPTR:
2585 return snd_pcm_oss_get_ptr(pcm_oss_file,
2586 cmd == SNDCTL_DSP_GETIPTR ?
2587 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK,
2588 (struct count_info __user *) arg);
2589 case SNDCTL_DSP_MAPINBUF:
2590 case SNDCTL_DSP_MAPOUTBUF:
2591 return snd_pcm_oss_get_mapbuf(pcm_oss_file,
2592 cmd == SNDCTL_DSP_MAPINBUF ?
2593 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK,
2594 (struct buffmem_desc __user *) arg);
2595 case SNDCTL_DSP_SETSYNCRO:
2596 /* stop DMA now.. */
2598 case SNDCTL_DSP_SETDUPLEX:
2599 if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX)
2602 case SNDCTL_DSP_GETODELAY:
2603 res = snd_pcm_oss_get_odelay(pcm_oss_file);
2605 /* it's for sure, some broken apps don't check for error codes */
2609 return put_user(res, p);
2610 case SNDCTL_DSP_PROFILE:
2611 return 0; /* silently ignore */
2613 snd_printd("pcm_oss: unknown command = 0x%x\n", cmd);
2618 #ifdef CONFIG_COMPAT
2619 /* all compatible */
2620 #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl
2622 #define snd_pcm_oss_ioctl_compat NULL
2625 static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
2627 struct snd_pcm_oss_file *pcm_oss_file;
2628 struct snd_pcm_substream *substream;
2630 pcm_oss_file = file->private_data;
2631 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2632 if (substream == NULL)
2634 substream->f_flags = file->f_flags & O_NONBLOCK;
2636 return snd_pcm_oss_read1(substream, buf, count);
2639 ssize_t res = snd_pcm_oss_read1(substream, buf, count);
2640 printk(KERN_DEBUG "pcm_oss: read %li bytes "
2641 "(returned %li bytes)\n", (long)count, (long)res);
2647 static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset)
2649 struct snd_pcm_oss_file *pcm_oss_file;
2650 struct snd_pcm_substream *substream;
2653 pcm_oss_file = file->private_data;
2654 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2655 if (substream == NULL)
2657 substream->f_flags = file->f_flags & O_NONBLOCK;
2658 result = snd_pcm_oss_write1(substream, buf, count);
2660 printk(KERN_DEBUG "pcm_oss: write %li bytes (wrote %li bytes)\n",
2661 (long)count, (long)result);
2666 static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream)
2668 struct snd_pcm_runtime *runtime = substream->runtime;
2669 if (atomic_read(&substream->mmap_count))
2670 return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt;
2672 return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames;
2675 static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream)
2677 struct snd_pcm_runtime *runtime = substream->runtime;
2678 if (atomic_read(&substream->mmap_count))
2679 return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt;
2681 return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames;
2684 static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait)
2686 struct snd_pcm_oss_file *pcm_oss_file;
2688 struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
2690 pcm_oss_file = file->private_data;
2692 psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2693 csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2696 if (psubstream != NULL) {
2697 struct snd_pcm_runtime *runtime = psubstream->runtime;
2698 poll_wait(file, &runtime->sleep, wait);
2699 snd_pcm_stream_lock_irq(psubstream);
2700 if (runtime->status->state != SNDRV_PCM_STATE_DRAINING &&
2701 (runtime->status->state != SNDRV_PCM_STATE_RUNNING ||
2702 snd_pcm_oss_playback_ready(psubstream)))
2703 mask |= POLLOUT | POLLWRNORM;
2704 snd_pcm_stream_unlock_irq(psubstream);
2706 if (csubstream != NULL) {
2707 struct snd_pcm_runtime *runtime = csubstream->runtime;
2708 snd_pcm_state_t ostate;
2709 poll_wait(file, &runtime->sleep, wait);
2710 snd_pcm_stream_lock_irq(csubstream);
2711 if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING ||
2712 snd_pcm_oss_capture_ready(csubstream))
2713 mask |= POLLIN | POLLRDNORM;
2714 snd_pcm_stream_unlock_irq(csubstream);
2715 if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) {
2716 struct snd_pcm_oss_file ofile;
2717 memset(&ofile, 0, sizeof(ofile));
2718 ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2719 runtime->oss.trigger = 0;
2720 snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT);
2727 static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area)
2729 struct snd_pcm_oss_file *pcm_oss_file;
2730 struct snd_pcm_substream *substream = NULL;
2731 struct snd_pcm_runtime *runtime;
2735 printk(KERN_DEBUG "pcm_oss: mmap begin\n");
2737 pcm_oss_file = file->private_data;
2738 switch ((area->vm_flags & (VM_READ | VM_WRITE))) {
2739 case VM_READ | VM_WRITE:
2740 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2745 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2748 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2753 /* set VM_READ access as well to fix memset() routines that do
2754 reads before writes (to improve performance) */
2755 area->vm_flags |= VM_READ;
2756 if (substream == NULL)
2758 runtime = substream->runtime;
2759 if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID))
2761 if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED)
2762 runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED;
2766 if (runtime->oss.params) {
2767 if ((err = snd_pcm_oss_change_params(substream)) < 0)
2770 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
2771 if (runtime->oss.plugin_first != NULL)
2775 if (area->vm_pgoff != 0)
2778 err = snd_pcm_mmap_data(substream, file, area);
2781 runtime->oss.mmap_bytes = area->vm_end - area->vm_start;
2782 runtime->silence_threshold = 0;
2783 runtime->silence_size = 0;
2785 printk(KERN_DEBUG "pcm_oss: mmap ok, bytes = 0x%x\n",
2786 runtime->oss.mmap_bytes);
2788 /* In mmap mode we never stop */
2789 runtime->stop_threshold = runtime->boundary;
2794 #ifdef CONFIG_SND_VERBOSE_PROCFS
2799 static void snd_pcm_oss_proc_read(struct snd_info_entry *entry,
2800 struct snd_info_buffer *buffer)
2802 struct snd_pcm_str *pstr = entry->private_data;
2803 struct snd_pcm_oss_setup *setup = pstr->oss.setup_list;
2804 mutex_lock(&pstr->oss.setup_mutex);
2806 snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n",
2810 setup->disable ? " disable" : "",
2811 setup->direct ? " direct" : "",
2812 setup->block ? " block" : "",
2813 setup->nonblock ? " non-block" : "",
2814 setup->partialfrag ? " partial-frag" : "",
2815 setup->nosilence ? " no-silence" : "");
2816 setup = setup->next;
2818 mutex_unlock(&pstr->oss.setup_mutex);
2821 static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr)
2823 struct snd_pcm_oss_setup *setup, *setupn;
2825 for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL;
2826 setup; setup = setupn) {
2827 setupn = setup->next;
2828 kfree(setup->task_name);
2831 pstr->oss.setup_list = NULL;
2834 static void snd_pcm_oss_proc_write(struct snd_info_entry *entry,
2835 struct snd_info_buffer *buffer)
2837 struct snd_pcm_str *pstr = entry->private_data;
2838 char line[128], str[32], task_name[32], *ptr;
2840 struct snd_pcm_oss_setup *setup, *setup1, template;
2842 while (!snd_info_get_line(buffer, line, sizeof(line))) {
2843 mutex_lock(&pstr->oss.setup_mutex);
2844 memset(&template, 0, sizeof(template));
2845 ptr = snd_info_get_str(task_name, line, sizeof(task_name));
2846 if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) {
2847 snd_pcm_oss_proc_free_setup_list(pstr);
2848 mutex_unlock(&pstr->oss.setup_mutex);
2851 for (setup = pstr->oss.setup_list; setup; setup = setup->next) {
2852 if (!strcmp(setup->task_name, task_name)) {
2857 ptr = snd_info_get_str(str, ptr, sizeof(str));
2858 template.periods = simple_strtoul(str, NULL, 10);
2859 ptr = snd_info_get_str(str, ptr, sizeof(str));
2860 template.period_size = simple_strtoul(str, NULL, 10);
2861 for (idx1 = 31; idx1 >= 0; idx1--)
2862 if (template.period_size & (1 << idx1))
2864 for (idx1--; idx1 >= 0; idx1--)
2865 template.period_size &= ~(1 << idx1);
2867 ptr = snd_info_get_str(str, ptr, sizeof(str));
2868 if (!strcmp(str, "disable")) {
2869 template.disable = 1;
2870 } else if (!strcmp(str, "direct")) {
2871 template.direct = 1;
2872 } else if (!strcmp(str, "block")) {
2874 } else if (!strcmp(str, "non-block")) {
2875 template.nonblock = 1;
2876 } else if (!strcmp(str, "partial-frag")) {
2877 template.partialfrag = 1;
2878 } else if (!strcmp(str, "no-silence")) {
2879 template.nosilence = 1;
2880 } else if (!strcmp(str, "buggy-ptr")) {
2881 template.buggyptr = 1;
2884 if (setup == NULL) {
2885 setup = kmalloc(sizeof(*setup), GFP_KERNEL);
2887 buffer->error = -ENOMEM;
2888 mutex_unlock(&pstr->oss.setup_mutex);
2891 if (pstr->oss.setup_list == NULL)
2892 pstr->oss.setup_list = setup;
2894 for (setup1 = pstr->oss.setup_list;
2895 setup1->next; setup1 = setup1->next);
2896 setup1->next = setup;
2898 template.task_name = kstrdup(task_name, GFP_KERNEL);
2899 if (! template.task_name) {
2901 buffer->error = -ENOMEM;
2902 mutex_unlock(&pstr->oss.setup_mutex);
2907 mutex_unlock(&pstr->oss.setup_mutex);
2911 static void snd_pcm_oss_proc_init(struct snd_pcm *pcm)
2914 for (stream = 0; stream < 2; ++stream) {
2915 struct snd_info_entry *entry;
2916 struct snd_pcm_str *pstr = &pcm->streams[stream];
2917 if (pstr->substream_count == 0)
2919 if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) {
2920 entry->content = SNDRV_INFO_CONTENT_TEXT;
2921 entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
2922 entry->c.text.read = snd_pcm_oss_proc_read;
2923 entry->c.text.write = snd_pcm_oss_proc_write;
2924 entry->private_data = pstr;
2925 if (snd_info_register(entry) < 0) {
2926 snd_info_free_entry(entry);
2930 pstr->oss.proc_entry = entry;
2934 static void snd_pcm_oss_proc_done(struct snd_pcm *pcm)
2937 for (stream = 0; stream < 2; ++stream) {
2938 struct snd_pcm_str *pstr = &pcm->streams[stream];
2939 snd_info_free_entry(pstr->oss.proc_entry);
2940 pstr->oss.proc_entry = NULL;
2941 snd_pcm_oss_proc_free_setup_list(pstr);
2944 #else /* !CONFIG_SND_VERBOSE_PROCFS */
2945 #define snd_pcm_oss_proc_init(pcm)
2946 #define snd_pcm_oss_proc_done(pcm)
2947 #endif /* CONFIG_SND_VERBOSE_PROCFS */
2953 static const struct file_operations snd_pcm_oss_f_reg =
2955 .owner = THIS_MODULE,
2956 .read = snd_pcm_oss_read,
2957 .write = snd_pcm_oss_write,
2958 .open = snd_pcm_oss_open,
2959 .release = snd_pcm_oss_release,
2960 .poll = snd_pcm_oss_poll,
2961 .unlocked_ioctl = snd_pcm_oss_ioctl,
2962 .compat_ioctl = snd_pcm_oss_ioctl_compat,
2963 .mmap = snd_pcm_oss_mmap,
2966 static void register_oss_dsp(struct snd_pcm *pcm, int index)
2969 sprintf(name, "dsp%i%i", pcm->card->number, pcm->device);
2970 if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
2971 pcm->card, index, &snd_pcm_oss_f_reg,
2973 snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n",
2974 pcm->card->number, pcm->device);
2978 static int snd_pcm_oss_register_minor(struct snd_pcm *pcm)
2981 if (dsp_map[pcm->card->number] == (int)pcm->device) {
2984 register_oss_dsp(pcm, 0);
2985 duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 &&
2986 pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count &&
2987 !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX));
2988 sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : "");
2989 #ifdef SNDRV_OSS_INFO_DEV_AUDIO
2990 snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO,
2995 pcm->oss.reg_mask |= 1;
2997 if (adsp_map[pcm->card->number] == (int)pcm->device) {
2998 register_oss_dsp(pcm, 1);
3000 pcm->oss.reg_mask |= 2;
3004 snd_pcm_oss_proc_init(pcm);
3009 static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm)
3012 if (pcm->oss.reg_mask & 1) {
3013 pcm->oss.reg_mask &= ~1;
3014 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
3017 if (pcm->oss.reg_mask & 2) {
3018 pcm->oss.reg_mask &= ~2;
3019 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
3022 if (dsp_map[pcm->card->number] == (int)pcm->device) {
3023 #ifdef SNDRV_OSS_INFO_DEV_AUDIO
3024 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number);
3032 static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm)
3034 snd_pcm_oss_disconnect_minor(pcm);
3035 snd_pcm_oss_proc_done(pcm);
3039 static struct snd_pcm_notify snd_pcm_oss_notify =
3041 .n_register = snd_pcm_oss_register_minor,
3042 .n_disconnect = snd_pcm_oss_disconnect_minor,
3043 .n_unregister = snd_pcm_oss_unregister_minor,
3046 static int __init alsa_pcm_oss_init(void)
3051 /* check device map table */
3052 for (i = 0; i < SNDRV_CARDS; i++) {
3053 if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) {
3054 snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n",
3058 if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) {
3059 snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n",
3064 if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0)
3069 static void __exit alsa_pcm_oss_exit(void)
3071 snd_pcm_notify(&snd_pcm_oss_notify, 1);
3074 module_init(alsa_pcm_oss_init)
3075 module_exit(alsa_pcm_oss_exit)