summaryrefslogtreecommitdiffstats
path: root/drivers/sound/dev_table.c
blob: 1a1f230c23ee1c7e2b38dc311ba2cebb06559098 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
/*
 * sound/dev_table.c
 *
 * Device call tables.
 */
/*
 * Copyright (C) by Hannu Savolainen 1993-1997
 *
 * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
 * Version 2 (June 1991). See the "COPYING" file distributed with this software
 * for more info.
 */
#include <linux/config.h>


#define _DEV_TABLE_C_
#include "sound_config.h"
int             sb_be_quiet = 0;
int             softoss_dev = 0;

int             sound_started = 0;

int             sndtable_get_cardcount(void);

int
snd_find_driver(int type)
{
	int             i, n = num_sound_drivers;

	for (i = 0; i < n; i++)
		if (sound_drivers[i].card_type == type)
			return i;

	return -1;
}

static void
start_services(void)
{
	int             soundcards_installed;

#ifdef FIXME
	if (!(soundcards_installed = sndtable_get_cardcount()))
		return;		/* No cards detected */
#endif

#ifdef CONFIG_AUDIO
	if (num_audiodevs)	/* Audio devices present */
	  {
		  int             dev;

		  for (dev = 0; dev < num_audiodevs; dev++)
		    {
		    }
		  audio_init_devices();
	  }
#endif

	return;
}

static void
start_cards(void)
{
	int             i, n = num_sound_cards;
	int             drv;

	sound_started = 1;
	if (trace_init)
		printk("Sound initialization started\n");

#ifdef CONFIG_LOWLEVEL_SOUND
	{
		extern void     sound_preinit_lowlevel_drivers(void);

#ifdef FIXME
		sound_preinit_lowlevel_drivers();
#endif
	}
#endif

/*
 * Check the number of cards actually defined in the table
 */

	for (i = 0; i < n && snd_installed_cards[i].card_type; i++)
		num_sound_cards = i + 1;

	for (i = 0; i < n && snd_installed_cards[i].card_type; i++)
		if (snd_installed_cards[i].enabled)
		  {
			  snd_installed_cards[i].for_driver_use = NULL;

			  if ((drv = snd_find_driver(snd_installed_cards[i].card_type)) == -1)
			    {
				    snd_installed_cards[i].enabled = 0;		/*
										 * Mark as not detected
										 */
				    continue;
			    }
			  snd_installed_cards[i].config.card_subtype =
			      sound_drivers[drv].card_subtype;

			  if (sound_drivers[drv].probe(&snd_installed_cards[i].config))
			    {

				    sound_drivers[drv].attach(&snd_installed_cards[i].config);

			  } else
				  snd_installed_cards[i].enabled = 0;	/*
									 * Mark as not detected
									 */
		  }
#ifdef CONFIG_LOWLEVEL_SOUND
	{
		extern void     sound_init_lowlevel_drivers(void);

		sound_init_lowlevel_drivers();
	}
#endif

	if (trace_init)
		printk("Sound initialization complete\n");
}

void
sndtable_init(void)
{
	start_cards();
}


void
sound_unload_drivers(void)
{
	int             i, n = num_sound_cards;
	int             drv;

	if (!sound_started)
		return;

	if (trace_init)
		printk("Sound unload started\n");


	for (i = 0; i < n && snd_installed_cards[i].card_type; i++)
		if (snd_installed_cards[i].enabled)
		  {
			  if ((drv = snd_find_driver(snd_installed_cards[i].card_type)) != -1)
			    {
				    if (sound_drivers[drv].unload)
				      {
					      sound_drivers[drv].unload(&snd_installed_cards[i].config);
					      snd_installed_cards[i].enabled = 0;
				      }
			    }
		  }
        for (i=0;i<num_audiodevs;i++)
		DMAbuf_deinit(i);

	if (trace_init)
		printk("Sound unload complete\n");
}

void
sound_unload_driver(int type)
{
	int             i, drv = -1, n = num_sound_cards;


	DEB(printk("unload driver %d: ", type));

	for (i = 0; i < n && snd_installed_cards[i].card_type; i++)
		if (snd_installed_cards[i].card_type == type)
		  {
			  if (snd_installed_cards[i].enabled)
			    {
				    if ((drv = snd_find_driver(type)) != -1)
				      {
					      DEB(printk(" card %d", i));
					      if (sound_drivers[drv].unload)
						{
							sound_drivers[drv].unload(&snd_installed_cards[i].config);
							snd_installed_cards[i].enabled = 0;
						}
				      }
			    }
		  }
	DEB(printk("\n"));
}


int
sndtable_probe(int unit, struct address_info *hw_config)
{
	int             sel = -1;

	DEB(printk("sndtable_probe(%d)\n", unit));

	if (!unit)
		return 1;


	if (sel == -1 && num_sound_cards < max_sound_cards)
	  {
		  int             i;

		  i = sel = (num_sound_cards++);

		  snd_installed_cards[sel].card_type = unit;
		  snd_installed_cards[sel].enabled = 1;
	  }
	if (sel != -1)
	  {
		  int             drv;

		  snd_installed_cards[sel].for_driver_use = NULL;
		  snd_installed_cards[sel].config.io_base = hw_config->io_base;
		  snd_installed_cards[sel].config.irq = hw_config->irq;
		  snd_installed_cards[sel].config.dma = hw_config->dma;
		  snd_installed_cards[sel].config.dma2 = hw_config->dma2;
		  snd_installed_cards[sel].config.name = hw_config->name;
		  snd_installed_cards[sel].config.always_detect = hw_config->always_detect;
		  snd_installed_cards[sel].config.driver_use_1 = hw_config->driver_use_1;
		  snd_installed_cards[sel].config.driver_use_2 = hw_config->driver_use_2;
		  snd_installed_cards[sel].config.card_subtype = hw_config->card_subtype;

		  if ((drv = snd_find_driver(snd_installed_cards[sel].card_type)) == -1)
		    {
			    snd_installed_cards[sel].enabled = 0;
			    DEB(printk("Failed to find driver\n"));
			    return 0;
		    }
		  DEB(printk("Driver name '%s'\n", sound_drivers[drv].name));

		  hw_config->card_subtype =
		      snd_installed_cards[sel].config.card_subtype =
		      sound_drivers[drv].card_subtype;

		  if (sound_drivers[drv].probe(hw_config))
		    {
			    DEB(printk("Hardware probed OK\n"));
			    return 1;
		    }
		  DEB(printk("Failed to find hardware\n"));
		  snd_installed_cards[sel].enabled = 0;		/*
								 * Mark as not detected
								 */
		  return 0;
	  }
	return 0;
}


int
sndtable_init_card(int unit, struct address_info *hw_config)
{
	int             i, n = num_sound_cards;

	DEB(printk("sndtable_init_card(%d) entered\n", unit));

	if (!unit)
	  {
		  sndtable_init();
		  return 1;
	  }
	for (i = 0; i < n && snd_installed_cards[i].card_type; i++)
		if (snd_installed_cards[i].card_type == unit)
		  {
			  int             drv;

			  snd_installed_cards[i].config.io_base = hw_config->io_base;
			  snd_installed_cards[i].config.irq = hw_config->irq;
			  snd_installed_cards[i].config.dma = hw_config->dma;
			  snd_installed_cards[i].config.dma2 = hw_config->dma2;
			  snd_installed_cards[i].config.name = hw_config->name;
			  snd_installed_cards[i].config.always_detect = hw_config->always_detect;
			  snd_installed_cards[i].config.driver_use_1 = hw_config->driver_use_1;
			  snd_installed_cards[i].config.driver_use_2 = hw_config->driver_use_2;
			  snd_installed_cards[i].config.card_subtype = hw_config->card_subtype;

			  if ((drv = snd_find_driver(snd_installed_cards[i].card_type)) == -1)
				  snd_installed_cards[i].enabled = 0;	/*
									 * Mark as not detected
									 */
			  else
			    {

				    DEB(printk("Located card - calling attach routine\n"));
				    sound_drivers[drv].attach(hw_config);

				    DEB(printk("attach routine finished\n"));
			    }
			  start_services();
			  return 1;
		  }
	DEB(printk("sndtable_init_card: No card defined with type=%d, num cards: %d\n", unit, num_sound_cards));
	return 0;
}

int
sndtable_get_cardcount(void)
{
	return num_audiodevs + num_mixers + num_synths + num_midis;
}

int
sndtable_identify_card(char *name)
{
	int             i, n = num_sound_drivers;

	if (name == NULL)
		return 0;

	for (i = 0; i < n; i++)
		if (sound_drivers[i].driver_id != NULL)
		  {
			  char           *id = sound_drivers[i].driver_id;
			  int             j;

			  for (j = 0; j < 80 && name[j] == id[j]; j++)
				  if (id[j] == 0 && name[j] == 0)	/* Match */
					  return sound_drivers[i].card_type;
		  }
	return 0;
}

void
sound_setup(char *str, int *ints)
{
	int             i, n = num_sound_cards;

	/*
	   * First disable all drivers
	 */

	for (i = 0; i < n && snd_installed_cards[i].card_type; i++)
		snd_installed_cards[i].enabled = 0;

	if (ints[0] == 0 || ints[1] == 0)
		return;
	/*
	   * Then enable them one by time
	 */

	for (i = 1; i <= ints[0]; i++)
	  {
		  int             card_type, ioaddr, irq, dma, dma2,
		                  ptr, j;
		  unsigned int    val;

		  val = (unsigned int) ints[i];

		  card_type = (val & 0x0ff00000) >> 20;

		  if (card_type > 127)
		    {
			    /*
			     * Add any future extensions here
			     */
			    return;
		    }
		  ioaddr = (val & 0x000fff00) >> 8;
		  irq = (val & 0x000000f0) >> 4;
		  dma = (val & 0x0000000f);
		  dma2 = (val & 0xf0000000) >> 28;

		  ptr = -1;
		  for (j = 0; j < n && ptr == -1; j++)
			  if (snd_installed_cards[j].card_type == card_type &&
			      !snd_installed_cards[j].enabled)	/*
								 * Not already found
								 */
				  ptr = j;

		  if (ptr == -1)
			  printk("Sound: Invalid setup parameter 0x%08x\n", val);
		  else
		    {
			    snd_installed_cards[ptr].enabled = 1;
			    snd_installed_cards[ptr].config.io_base = ioaddr;
			    snd_installed_cards[ptr].config.irq = irq;
			    snd_installed_cards[ptr].config.dma = dma;
			    snd_installed_cards[ptr].config.dma2 = dma2;
			    snd_installed_cards[ptr].config.name = NULL;
			    snd_installed_cards[ptr].config.always_detect = 0;
			    snd_installed_cards[ptr].config.driver_use_1 = 0;
			    snd_installed_cards[ptr].config.driver_use_2 = 0;
			    snd_installed_cards[ptr].config.card_subtype = 0;
		    }
	  }
}


struct address_info
               *
sound_getconf(int card_type)
{
	int             j, ptr;
	int             n = num_sound_cards;

	ptr = -1;
	for (j = 0; j < n && ptr == -1 && snd_installed_cards[j].card_type; j++)
		if (snd_installed_cards[j].card_type == card_type)
			ptr = j;

	if (ptr == -1)
		return (struct address_info *) NULL;

	return &snd_installed_cards[ptr].config;
}



int
sound_install_audiodrv(int vers,
		       char *name,
		       struct audio_driver *driver,
		       int driver_size,
		       int flags,
		       unsigned int format_mask,
		       void *devc,
		       int dma1,
		       int dma2)
{
#ifdef CONFIG_AUDIO
	struct audio_driver *d;
	struct audio_operations *op;
	int             l, num;

	if (vers != AUDIO_DRIVER_VERSION ||
	    driver_size > sizeof(struct audio_driver))
	  {
		  printk(KERN_ERR "Sound: Incompatible audio driver for %s\n", name);
		  return -(EINVAL);
	  }
	num = sound_alloc_audiodev();

	if (num == -1)
	  {
		  printk(KERN_ERR "sound: Too many audio drivers\n");
		  return -(EBUSY);
	  }
	d = (struct audio_driver *) (sound_mem_blocks[sound_nblocks] = vmalloc(sizeof(struct audio_driver)));
	sound_mem_sizes[sound_nblocks] = sizeof(struct audio_driver);

	if (sound_nblocks < 1024)
		sound_nblocks++;;

	op = (struct audio_operations *) (sound_mem_blocks[sound_nblocks] = vmalloc(sizeof(struct audio_operations)));
	sound_mem_sizes[sound_nblocks] = sizeof(struct audio_operations);

	if (sound_nblocks < 1024)
		sound_nblocks++;;
	if (d == NULL || op == NULL)
	  {
		  printk(KERN_ERR "Sound: Can't allocate driver for (%s)\n", name);
		  sound_unload_audiodev(num);
		  return -(ENOMEM);
	  }
	memset((char *) op, 0, sizeof(struct audio_operations));
	if (driver_size < sizeof(struct audio_driver))
		                memset((char *) d, 0, sizeof(struct audio_driver));

	memcpy((char *) d, (char *) driver, driver_size);

	op->d = d;

	l = strlen(name) + 1;
	if (l > sizeof(op->name))
		l = sizeof(op->name);
	strncpy(op->name, name, l);
	op->name[l - 1] = 0;
	op->flags = flags;
	op->format_mask = format_mask;
	op->devc = devc;

/*
 *    Hardcoded defaults
 */
	audio_devs[num] = op;

	DMAbuf_init(num, dma1, dma2);

	audio_init_devices();
	return num;
#else
	return -EINVAL;
#endif
}

int
sound_install_mixer(int vers,
		    char *name,
		    struct mixer_operations *driver,
		    int driver_size,
		    void *devc)
{
	struct mixer_operations *op;
	int             l;

	int             n = sound_alloc_mixerdev();

	if (n == -1)
	  {
		  printk(KERN_ERR "Sound: Too many mixer drivers\n");
		  return -(EBUSY);
	  }
	if (vers != MIXER_DRIVER_VERSION ||
	    driver_size > sizeof(struct mixer_operations))
	  {
		  printk(KERN_ERR "Sound: Incompatible mixer driver for %s\n", name);
		  return -(EINVAL);
	  }
	op = (struct mixer_operations *) (sound_mem_blocks[sound_nblocks] = vmalloc(sizeof(struct mixer_operations)));
	sound_mem_sizes[sound_nblocks] = sizeof(struct mixer_operations);

	if (sound_nblocks < 1024)
		sound_nblocks++;;
	if (op == NULL)
	  {
		  printk(KERN_ERR "Sound: Can't allocate mixer driver for (%s)\n", name);
		  return -(ENOMEM);
	  }
	memset((char *) op, 0, sizeof(struct mixer_operations));

	memcpy((char *) op, (char *) driver, driver_size);

	l = strlen(name) + 1;
	if (l > sizeof(op->name))
		l = sizeof(op->name);
	strncpy(op->name, name, l);
	op->name[l - 1] = 0;
	op->devc = devc;

	mixer_devs[n] = op;
	return n;
}

void
sound_unload_audiodev(int dev)
{
	if (dev != -1)
		audio_devs[dev] = NULL;
}

int
sound_alloc_audiodev(void)
{
	int             i;

	for (i = 0; i < MAX_AUDIO_DEV; i++)
	  {
		  if (audio_devs[i] == NULL)
		    {
			    if (i >= num_audiodevs)
				    num_audiodevs = i + 1;
			    return i;
		    }
	  }
	return -1;
}

int
sound_alloc_mididev(void)
{
	int             i;

	for (i = 0; i < MAX_MIDI_DEV; i++)
	  {
		  if (midi_devs[i] == NULL)
		    {
			    if (i >= num_midis)
				    num_midis++;
			    return i;
		    }
	  }

	return -1;
}

int
sound_alloc_synthdev(void)
{
	int             i;

	for (i = 0; i < MAX_SYNTH_DEV; i++)
	  {
		  if (synth_devs[i] == NULL)
		    {
			    if (i >= num_synths)
				    num_synths++;
			    return i;
		    }
	  }
	return -1;
}

int
sound_alloc_mixerdev(void)
{
	int             i;

	for (i = 0; i < MAX_MIXER_DEV; i++)
	  {
		  if (mixer_devs[i] == NULL)
		    {
			    if (i >= num_mixers)
				    num_mixers++;
			    return i;
		    }
	  }
	return -1;
}

int
sound_alloc_timerdev(void)
{
	int             i;

	for (i = 0; i < MAX_TIMER_DEV; i++)
	  {
		  if (sound_timer_devs[i] == NULL)
		    {
			    if (i >= num_sound_timers)
				    num_sound_timers++;
			    return i;
		    }
	  }
	return -1;
}

void
sound_unload_mixerdev(int dev)
{
	if (dev != -1)
		mixer_devs[dev] = NULL;
}

void
sound_unload_mididev(int dev)
{
#ifdef CONFIG_MIDI
	if (dev != -1)
		midi_devs[dev] = NULL;
#endif
}

void
sound_unload_synthdev(int dev)
{
	if (dev != -1)
		synth_devs[dev] = NULL;
}

void
sound_unload_timerdev(int dev)
{
	if (dev != -1)
		sound_timer_devs[dev] = NULL;
}