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
|
/*
* sound/386bsd/soundcard.c
*
* Soundcard driver for FreeBSD.
*
* Copyright by Hannu Savolainen 1993
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include "sound_config.h"
#ifdef CONFIGURE_SOUNDCARD
#include "dev_table.h"
int __timeout_val = 0;
int __process_aborting = 0;
u_int snd1mask;
u_int snd2mask;
u_int snd3mask;
u_int snd4mask;
u_int snd5mask;
struct sbc_device
{
int usecount;
};
#define FIX_RETURN(ret) {if ((ret)<0) return -(ret); else return 0;}
static struct sbc_device sbc_devices[SND_NDEVS];
static int timer_running = 0;
static int in_use = 0; /* Total # of open device files (excluding
* minor 0) */
static int soundcards_installed = 0; /* Number of installed
* soundcards */
static int soundcard_configured = 0;
extern char *snd_raw_buf[MAX_DSP_DEV][DSP_BUFFCOUNT];
extern unsigned long snd_raw_buf_phys[MAX_DSP_DEV][DSP_BUFFCOUNT];
extern int snd_raw_count[MAX_DSP_DEV];
static struct fileinfo files[SND_NDEVS];
int sndprobe (struct isa_device *dev);
int sndattach (struct isa_device *dev);
int sndopen (dev_t dev, int flags);
int sndclose (dev_t dev, int flags);
int sndioctl (dev_t dev, int cmd, caddr_t arg, int mode);
int sndread (int dev, struct uio *uio);
int sndwrite (int dev, struct uio *uio);
int sndselect (int dev, int rw);
static void sound_mem_init(void);
long
get_time()
{
extern struct timeval time;
return(time.tv_usec + (time.tv_sec*1000000));
}
int
sndread (int dev, struct uio *buf)
{
int count = buf->uio_resid;
dev = minor (dev);
DEB (printk ("sound_read(dev=%d, count=%d)\n", dev, count));
switch (dev & 0x0f) /* It really has to be 0x0f */
{
case SND_DEV_AUDIO:
FIX_RETURN (audio_read (dev, &files[dev], buf, count));
break;
case SND_DEV_DSP:
case SND_DEV_DSP16:
FIX_RETURN (dsp_read (dev, &files[dev], buf, count));
break;
case SND_DEV_SEQ:
FIX_RETURN (sequencer_read (dev, &files[dev], buf, count));
break;
#ifndef EXCLUDE_CHIP_MIDI
case CMIDI_DEV_PRO:
FIX_RETURN (CMIDI_read (dev, &files[dev], buf, count));
break;
#endif
#ifndef EXCLUDE_MPU401
case SND_DEV_MIDIN:
FIX_RETURN (MIDIbuf_read (dev, &files[dev], buf, count));
#endif
default:
;
}
FIX_RETURN (-EPERM);
}
int
sndwrite (int dev, struct uio *buf)
{
int count = buf->uio_resid;
DEB (printk ("sound_write(dev=%d, count=%d)\n", dev, count));
dev = minor (dev);
switch (dev & 0x0f) /* It really has to be 0x0f */
{
case SND_DEV_SEQ:
FIX_RETURN (sequencer_write (dev, &files[dev], buf, count));
break;
case SND_DEV_AUDIO:
FIX_RETURN (audio_write (dev, &files[dev], buf, count));
break;
case SND_DEV_DSP:
case SND_DEV_DSP16:
FIX_RETURN (dsp_write (dev, &files[dev], buf, count));
break;
#ifndef EXCLUDE_CHIP_MIDI
case CMIDI_DEV_PRO:
FIX_RETURN (CMIDI_write (dev, &files[dev], buf, count));
break;
#endif
default:
FIX_RETURN (-EPERM);
}
FIX_RETURN (count);
}
int
sndopen (dev_t dev, int flags)
{
int retval;
dev = minor (dev);
/* printf("SND: Minor number is now : %ld\n",dev); */
DEB (printk ("sound_open(dev=%d) : usecount=%d\n", dev, sbc_devices[dev].usecount));
if ((dev >= SND_NDEVS) || (dev < 0))
{
printk ("Invalid minor device %d\n", dev);
FIX_RETURN (-ENODEV);
}
if (!soundcard_configured && dev)
{
printk ("SoundCard Error: The soundcard system has not been configured\n");
FIX_RETURN (-ENODEV);
}
files[dev].mode = 0;
if (flags & FREAD && flags & FWRITE)
files[dev].mode = OPEN_READWRITE;
else if (flags & FREAD)
files[dev].mode = OPEN_READ;
else if (flags & FWRITE)
files[dev].mode = OPEN_WRITE;
switch (dev & 0x0f) /* It has to be 0x0f. Trust me */
{
case SND_DEV_CTL:
if (!soundcards_installed)
if (soundcard_configured)
{
printk ("Soundcard not installed\n");
FIX_RETURN (-ENODEV);
}
break;
case SND_DEV_SEQ:
if ((retval = sequencer_open (dev, &files[dev])) < 0)
FIX_RETURN (retval);
break;
/** UWM stuff **/
#ifndef EXCLUDE_CHIP_MIDI
case CMIDI_DEV_PRO:
FIX_RETURN ( CMIDI_open (dev, &files[dev]) );
break;
#endif
#ifndef EXCLUDE_MPU401
case SND_DEV_MIDIN:
if ((retval = MIDIbuf_open (dev, &files[dev])) < 0)
FIX_RETURN (retval);
break;
#endif
case SND_DEV_AUDIO:
if ((retval = audio_open (dev, &files[dev])) < 0)
FIX_RETURN (retval);
break;
case SND_DEV_DSP:
if ((retval = dsp_open (dev, &files[dev], 8)) < 0)
FIX_RETURN (retval);
break;
case SND_DEV_DSP16:
if ((retval = dsp_open (dev, &files[dev], 16)) < 0)
FIX_RETURN (retval);
break;
default:
printk ("Invalid minor device %d\n", dev);
FIX_RETURN (-ENODEV);
}
sbc_devices[dev].usecount++;
in_use++;
FIX_RETURN (0);
}
int
sndclose (dev_t dev, int flags)
{
dev = minor (dev);
DEB (printk ("sound_release(dev=%d)\n", dev));
switch (dev & 0x0f) /* Has to be 0x0f */
{
case SND_DEV_SEQ:
sequencer_release (dev, &files[dev]);
break;
#ifndef EXCLUDE_CHIP_MIDI
case CMIDI_DEV_PRO:
CMIDI_close (dev, &files[dev]);
break;
#endif
#ifndef EXCLUDE_MPU401
case SND_DEV_MIDIN:
MIDIbuf_release (dev, &files[dev]);
break;
#endif
case SND_DEV_AUDIO:
audio_release (dev, &files[dev]);
break;
case SND_DEV_DSP:
case SND_DEV_DSP16:
dsp_release (dev, &files[dev]);
break;
default:;
}
sbc_devices[dev].usecount--;
in_use--; /* If not control port */
FIX_RETURN (0);
}
int
sndioctl (dev_t dev, int cmd, caddr_t arg, int mode)
{
dev = minor (dev);
DEB (printk ("sound_ioctl(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg));
switch (dev & 0x0f)
{
case SND_DEV_CTL:
if (!num_mixers)
FIX_RETURN (-ENODEV);
if (dev >= num_mixers)
FIX_RETURN (-ENODEV);
FIX_RETURN (mixer_devs[dev]->ioctl (dev, cmd, (unsigned int) arg));
break;
case SND_DEV_SEQ:
FIX_RETURN (sequencer_ioctl (dev, &files[dev], cmd, (unsigned int) arg));
break;
case SND_DEV_AUDIO:
FIX_RETURN (audio_ioctl (dev, &files[dev], cmd, (unsigned int) arg));
break;
case SND_DEV_DSP:
case SND_DEV_DSP16:
FIX_RETURN (dsp_ioctl (dev, &files[dev], cmd, (unsigned int) arg));
break;
#ifndef EXCLUDE_MPU401
case SND_DEV_MIDIN:
FIX_RETURN (MIDIbuf_ioctl (dev, &files[dev], cmd, (unsigned int) arg));
break;
#endif
default:
FIX_RETURN (-EPERM);
break;
}
FIX_RETURN (-EPERM);
}
int
sndselect (int dev, int rw)
{
dev = minor (dev);
DEB (printk ("sound_ioctl(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg));
FIX_RETURN (0);
}
static unsigned short
ipri_to_irq (unsigned short ipri)
{
/*
* Converts the ipri (bitmask) to the corresponding irq number
*/
int irq;
for (irq = 0; irq < 16; irq++)
if (ipri == (1 << irq))
return irq;
return -1; /* Invalid argument */
}
int
sndprobe (struct isa_device *dev)
{
struct address_info hw_config;
hw_config.io_base = dev->id_iobase;
hw_config.irq = ipri_to_irq (dev->id_irq);
hw_config.dma = dev->id_drq;
return sndtable_probe (dev->id_unit, &hw_config);
}
int
sndattach (struct isa_device *dev)
{
int i;
static int dsp_initialized = 0;
static int midi_initialized = 0;
static int seq_initialized = 0;
static int generic_midi_initialized = 0;
unsigned long mem_start = 0xefffffffUL;
struct address_info hw_config;
hw_config.io_base = dev->id_iobase;
hw_config.irq = ipri_to_irq (dev->id_irq);
hw_config.dma = dev->id_drq;
if (dev->id_unit) /* Card init */
if (!sndtable_init_card (dev->id_unit, &hw_config))
{
printf (" <Driver not configured>");
return FALSE;
}
/*
* Init the high level sound driver
*/
if (!(soundcards_installed = sndtable_get_cardcount ()))
{
printf (" <No such hardware>");
return FALSE; /* No cards detected */
}
printf("\n");
#ifndef EXCLUDE_AUDIO
soundcard_configured = 1;
if (num_dspdevs)
sound_mem_init ();
#endif
if (num_dspdevs && !dsp_initialized) /* Audio devices present */
{
dsp_initialized = 1;
mem_start = DMAbuf_init (mem_start);
mem_start = audio_init (mem_start);
mem_start = dsp_init (mem_start);
}
/** UWM stuff **/
#ifndef EXCLUDE_CHIP_MIDI
if (!generic_midi_initialized)
{
generic_midi_initialized = 1;
mem_start = CMIDI_init (mem_start);
}
#endif
#ifndef EXCLUDE_MPU401
if (num_midis && !midi_initialized)
{
midi_initialized = 1;
mem_start = MIDIbuf_init (mem_start);
}
#endif
if ((num_midis + num_synths) && !seq_initialized)
{
seq_initialized = 1;
mem_start = sequencer_init (mem_start);
}
for (i = 0; i < SND_NDEVS; i++)
{
sbc_devices[i].usecount = 0;
}
return TRUE;
}
void
tenmicrosec (void)
{
int i;
for (i = 0; i < 16; i++)
inb (0x80);
}
#ifdef EXCLUDE_GUS
void
gusintr (int unit)
{
return;
}
#endif
void
request_sound_timer (int count)
{
static int current = 0;
int tmp = count;
if (count < 0)
timeout ((timeout_func_t)sequencer_timer, 0, -count);
else
{
if (count < current)
current = 0; /* Timer restarted */
count = count - current;
current = tmp;
if (!count)
count = 1;
timeout ((timeout_func_t)sequencer_timer, 0, count);
}
timer_running = 1;
}
void
sound_stop_timer (void)
{
if (timer_running)
untimeout ((timeout_func_t)sequencer_timer, 0); /* XXX should fix */
timer_running = 0;
}
#ifndef EXCLUDE_AUDIO
static void
sound_mem_init (void)
{
int i, dev;
unsigned long dma_pagesize;
static unsigned long dsp_init_mask = 0;
for (dev = 0; dev < num_dspdevs; dev++) /* Enumerate devices */
if (!(dsp_init_mask & (1 << dev))) /* Not already done */
if (sound_buffcounts[dev] > 0 && sound_dsp_dmachan[dev] > 0)
{
dsp_init_mask |= (1 << dev);
if (sound_dma_automode[dev])
{
sound_dma_automode[dev] = 0; /* Not possible with FreeBSD */
}
if (sound_buffcounts[dev] == 1)
{
sound_buffcounts[dev] = 2;
sound_buffsizes[dev] /= 2;
}
if (sound_buffsizes[dev] > 65536) /* Larger is not possible (yet) */
sound_buffsizes[dev] = 65536;
#if 0
if (sound_dsp_dmachan[dev] > 3 && sound_buffsizes[dev] > 65536)
dma_pagesize = 131072; /* 128k */
else
dma_pagesize = 65536;
#endif
dma_pagesize = 4096; /* use bounce buffer */
/* More sanity checks */
if (sound_buffsizes[dev] > dma_pagesize)
sound_buffsizes[dev] = dma_pagesize;
sound_buffsizes[dev] &= ~0xfff; /* Truncate to n*4k */
if (sound_buffsizes[dev] < 4096)
sound_buffsizes[dev] = 4096;
/* Now allocate the buffers */
for (snd_raw_count[dev] = 0; snd_raw_count[dev] < sound_buffcounts[dev]; snd_raw_count[dev]++)
{
/*
* The DMA buffer allocation algorithm hogs memory. We allocate
* a memory area which is two times the requires size. This
* guarantees that it contains at least one valid DMA buffer.
*
* This really needs some kind of finetuning.
*/
char *tmpbuf = malloc (2*sound_buffsizes[dev], M_DEVBUF, M_NOWAIT);
unsigned long addr, rounded;
if (tmpbuf == NULL)
{
printk ("snd: Unable to allocate %d bytes of buffer\n",
2 * sound_buffsizes[dev]);
return;
}
addr = kvtop (tmpbuf);
/*
* Align the start address
*/
rounded = (addr & ~(dma_pagesize - 1)) + dma_pagesize;
snd_raw_buf[dev][snd_raw_count[dev]] =
&tmpbuf[rounded - addr]; /* Compute offset */
/*
* Use virtual address as the physical address, since
* isa_dmastart performs the phys address computation.
*/
snd_raw_buf_phys[dev][snd_raw_count[dev]] =
(unsigned long) snd_raw_buf[dev][snd_raw_count[dev]];
}
} /* for dev */
}
#endif
struct isa_driver snddriver =
{sndprobe, sndattach, "snd"};
int
snd_ioctl_return (int *addr, int value)
{
if (value < 0)
return value; /* Error */
suword (addr, value);
return 0;
}
#endif
|