Home Home > GIT Browse
summaryrefslogtreecommitdiff
blob: 07c116fe78c85c82de959a2012b85159ed4891d5 (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
#ifndef __SOUND_GUS_H
#define __SOUND_GUS_H

/*
 *  Global structures used for GUS part of ALSA driver
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <sound/pcm.h>
#include <sound/rawmidi.h>
#include <sound/timer.h>
#include <sound/seq_midi_emul.h>
#include <sound/seq_device.h>
#include <linux/io.h>

/* IO ports */

#define GUSP(gus, x)			((gus)->gf1.port + SNDRV_g_u_s_##x)

#define SNDRV_g_u_s_MIDICTRL		(0x320-0x220)
#define SNDRV_g_u_s_MIDISTAT		(0x320-0x220)
#define SNDRV_g_u_s_MIDIDATA		(0x321-0x220)

#define SNDRV_g_u_s_GF1PAGE		(0x322-0x220)
#define SNDRV_g_u_s_GF1REGSEL		(0x323-0x220)
#define SNDRV_g_u_s_GF1DATALOW		(0x324-0x220)
#define SNDRV_g_u_s_GF1DATAHIGH		(0x325-0x220)
#define SNDRV_g_u_s_IRQSTAT		(0x226-0x220)
#define SNDRV_g_u_s_TIMERCNTRL		(0x228-0x220)
#define SNDRV_g_u_s_TIMERDATA		(0x229-0x220)
#define SNDRV_g_u_s_DRAM		(0x327-0x220)
#define SNDRV_g_u_s_MIXCNTRLREG		(0x220-0x220)
#define SNDRV_g_u_s_IRQDMACNTRLREG	(0x22b-0x220)
#define SNDRV_g_u_s_REGCNTRLS		(0x22f-0x220)
#define SNDRV_g_u_s_BOARDVERSION	(0x726-0x220)
#define SNDRV_g_u_s_MIXCNTRLPORT	(0x726-0x220)
#define SNDRV_g_u_s_IVER		(0x325-0x220)
#define SNDRV_g_u_s_MIXDATAPORT		(0x326-0x220)
#define SNDRV_g_u_s_MAXCNTRLPORT	(0x326-0x220)

/* GF1 registers */

/* global registers */
#define SNDRV_GF1_GB_ACTIVE_VOICES		0x0e
#define SNDRV_GF1_GB_VOICES_IRQ			0x0f
#define SNDRV_GF1_GB_GLOBAL_MODE		0x19
#define SNDRV_GF1_GW_LFO_BASE			0x1a
#define SNDRV_GF1_GB_VOICES_IRQ_READ		0x1f
#define SNDRV_GF1_GB_DRAM_DMA_CONTROL		0x41
#define SNDRV_GF1_GW_DRAM_DMA_LOW		0x42
#define SNDRV_GF1_GW_DRAM_IO_LOW		0x43
#define SNDRV_GF1_GB_DRAM_IO_HIGH		0x44
#define SNDRV_GF1_GB_SOUND_BLASTER_CONTROL	0x45
#define SNDRV_GF1_GB_ADLIB_TIMER_1		0x46
#define SNDRV_GF1_GB_ADLIB_TIMER_2		0x47
#define SNDRV_GF1_GB_RECORD_RATE		0x48
#define SNDRV_GF1_GB_REC_DMA_CONTROL		0x49
#define SNDRV_GF1_GB_JOYSTICK_DAC_LEVEL		0x4b
#define SNDRV_GF1_GB_RESET			0x4c
#define SNDRV_GF1_GB_DRAM_DMA_HIGH		0x50
#define SNDRV_GF1_GW_DRAM_IO16			0x51
#define SNDRV_GF1_GW_MEMORY_CONFIG		0x52
#define SNDRV_GF1_GB_MEMORY_CONTROL		0x53
#define SNDRV_GF1_GW_FIFO_RECORD_BASE_ADDR	0x54
#define SNDRV_GF1_GW_FIFO_PLAY_BASE_ADDR	0x55
#define SNDRV_GF1_GW_FIFO_SIZE			0x56
#define SNDRV_GF1_GW_INTERLEAVE			0x57
#define SNDRV_GF1_GB_COMPATIBILITY		0x59
#define SNDRV_GF1_GB_DECODE_CONTROL		0x5a
#define SNDRV_GF1_GB_VERSION_NUMBER		0x5b
#define SNDRV_GF1_GB_MPU401_CONTROL_A		0x5c
#define SNDRV_GF1_GB_MPU401_CONTROL_B		0x5d
#define SNDRV_GF1_GB_EMULATION_IRQ		0x60
/* voice specific registers */
#define SNDRV_GF1_VB_ADDRESS_CONTROL		0x00
#define SNDRV_GF1_VW_FREQUENCY			0x01
#define SNDRV_GF1_VW_START_HIGH			0x02
#define SNDRV_GF1_VW_START_LOW			0x03
#define SNDRV_GF1_VA_START			SNDRV_GF1_VW_START_HIGH
#define SNDRV_GF1_VW_END_HIGH			0x04
#define SNDRV_GF1_VW_END_LOW			0x05
#define SNDRV_GF1_VA_END			SNDRV_GF1_VW_END_HIGH
#define SNDRV_GF1_VB_VOLUME_RATE		0x06
#define SNDRV_GF1_VB_VOLUME_START		0x07
#define SNDRV_GF1_VB_VOLUME_END			0x08
#define SNDRV_GF1_VW_VOLUME			0x09
#define SNDRV_GF1_VW_CURRENT_HIGH		0x0a
#define SNDRV_GF1_VW_CURRENT_LOW		0x0b
#define SNDRV_GF1_VA_CURRENT			SNDRV_GF1_VW_CURRENT_HIGH
#define SNDRV_GF1_VB_PAN			0x0c
#define SNDRV_GF1_VW_OFFSET_RIGHT		0x0c
#define SNDRV_GF1_VB_VOLUME_CONTROL		0x0d
#define SNDRV_GF1_VB_UPPER_ADDRESS		0x10
#define SNDRV_GF1_VW_EFFECT_HIGH		0x11
#define SNDRV_GF1_VW_EFFECT_LOW			0x12
#define SNDRV_GF1_VA_EFFECT			SNDRV_GF1_VW_EFFECT_HIGH
#define SNDRV_GF1_VW_OFFSET_LEFT		0x13
#define SNDRV_GF1_VB_ACCUMULATOR		0x14
#define SNDRV_GF1_VB_MODE			0x15
#define SNDRV_GF1_VW_EFFECT_VOLUME		0x16
#define SNDRV_GF1_VB_FREQUENCY_LFO		0x17
#define SNDRV_GF1_VB_VOLUME_LFO			0x18
#define SNDRV_GF1_VW_OFFSET_RIGHT_FINAL		0x1b
#define SNDRV_GF1_VW_OFFSET_LEFT_FINAL		0x1c
#define SNDRV_GF1_VW_EFFECT_VOLUME_FINAL	0x1d

/* ICS registers */

#define SNDRV_ICS_MIC_DEV		0
#define SNDRV_ICS_LINE_DEV		1
#define SNDRV_ICS_CD_DEV		2
#define SNDRV_ICS_GF1_DEV		3
#define SNDRV_ICS_NONE_DEV		4
#define SNDRV_ICS_MASTER_DEV		5

/* LFO */

#define SNDRV_LFO_TREMOLO		0
#define SNDRV_LFO_VIBRATO		1

/* misc */

#define SNDRV_GF1_DMA_UNSIGNED	0x80
#define SNDRV_GF1_DMA_16BIT	0x40
#define SNDRV_GF1_DMA_IRQ	0x20
#define SNDRV_GF1_DMA_WIDTH16	0x04
#define SNDRV_GF1_DMA_READ	0x02	/* read from GUS's DRAM */
#define SNDRV_GF1_DMA_ENABLE	0x01

/* ramp ranges */

#define SNDRV_GF1_ATTEN(x)	(snd_gf1_atten_table[x])
#define SNDRV_GF1_MIN_VOLUME	1800
#define SNDRV_GF1_MAX_VOLUME	4095
#define SNDRV_GF1_MIN_OFFSET	(SNDRV_GF1_MIN_VOLUME>>4)
#define SNDRV_GF1_MAX_OFFSET	255
#define SNDRV_GF1_MAX_TDEPTH	90

/* defines for memory manager */

#define SNDRV_GF1_MEM_BLOCK_16BIT	0x0001

#define SNDRV_GF1_MEM_OWNER_DRIVER	0x0001
#define SNDRV_GF1_MEM_OWNER_WAVE_SIMPLE	0x0002
#define SNDRV_GF1_MEM_OWNER_WAVE_GF1	0x0003
#define SNDRV_GF1_MEM_OWNER_WAVE_IWFFFF	0x0004

/* constants for interrupt handlers */

#define SNDRV_GF1_HANDLER_MIDI_OUT	0x00010000
#define SNDRV_GF1_HANDLER_MIDI_IN	0x00020000
#define SNDRV_GF1_HANDLER_TIMER1	0x00040000
#define SNDRV_GF1_HANDLER_TIMER2	0x00080000
#define SNDRV_GF1_HANDLER_VOICE		0x00100000
#define SNDRV_GF1_HANDLER_DMA_WRITE	0x00200000
#define SNDRV_GF1_HANDLER_DMA_READ	0x00400000
#define SNDRV_GF1_HANDLER_ALL		(0xffff0000&~SNDRV_GF1_HANDLER_VOICE)

/* constants for DMA flags */

#define SNDRV_GF1_DMA_TRIGGER		1

/* --- */

struct snd_gus_card;

/* GF1 specific structure */

struct snd_gf1_bank_info {
	unsigned int address;
	unsigned int size;
};

struct snd_gf1_mem_block {
	unsigned short flags;	/* flags - SNDRV_GF1_MEM_BLOCK_XXXX */
	unsigned short owner;	/* owner - SNDRV_GF1_MEM_OWNER_XXXX */
	unsigned int share;	/* share count */
	unsigned int share_id[4]; /* share ID */
	unsigned int ptr;
	unsigned int size;
	char *name;
	struct snd_gf1_mem_block *next;
	struct snd_gf1_mem_block *prev;
};

struct snd_gf1_mem {
	struct snd_gf1_bank_info banks_8[4];
	struct snd_gf1_bank_info banks_16[4];
	struct snd_gf1_mem_block *first;
	struct snd_gf1_mem_block *last;
	struct mutex memory_mutex;
};

struct snd_gf1_dma_block {
	void *buffer;		/* buffer in computer's RAM */
	unsigned long buf_addr;	/* buffer address */
	unsigned int addr;	/* address in onboard memory */
	unsigned int count;	/* count in bytes */
	unsigned int cmd;	/* DMA command (format) */
	void (*ack)(struct snd_gus_card * gus, void *private_data);
	void *private_data;
	struct snd_gf1_dma_block *next;
};

struct snd_gus_port {
	struct snd_midi_channel_set * chset;
	struct snd_gus_card * gus;
	int mode;		/* operation mode */
	int client;		/* sequencer client number */
	int port;		/* sequencer port number */
	unsigned int midi_has_voices: 1;
};

struct snd_gus_voice;

#define SNDRV_GF1_VOICE_TYPE_PCM	0
#define SNDRV_GF1_VOICE_TYPE_SYNTH 	1
#define SNDRV_GF1_VOICE_TYPE_MIDI	2

#define SNDRV_GF1_VFLG_RUNNING		(1<<0)
#define SNDRV_GF1_VFLG_EFFECT_TIMER1	(1<<1)
#define SNDRV_GF1_VFLG_PAN		(1<<2)

enum snd_gus_volume_state {
	VENV_BEFORE,
	VENV_ATTACK,
	VENV_SUSTAIN,
	VENV_RELEASE,
	VENV_DONE,
	VENV_VOLUME
};

struct snd_gus_voice {
	int number;
	unsigned int use: 1,
	    pcm: 1,
	    synth:1,
	    midi: 1;
	unsigned int flags;
	unsigned char client;
	unsigned char port;
	unsigned char index;
	unsigned char pad;
	
#ifdef CONFIG_SND_DEBUG
	unsigned int interrupt_stat_wave;
	unsigned int interrupt_stat_volume;
#endif
	void (*handler_wave) (struct snd_gus_card * gus, struct snd_gus_voice * voice);
	void (*handler_volume) (struct snd_gus_card * gus, struct snd_gus_voice * voice);
	void (*handler_effect) (struct snd_gus_card * gus, struct snd_gus_voice * voice);
	void (*volume_change) (struct snd_gus_card * gus);

	struct snd_gus_sample_ops *sample_ops;

	/* running status / registers */

	unsigned short fc_register;
	unsigned short fc_lfo;
	unsigned short gf1_volume;
	unsigned char control;
	unsigned char mode;
	unsigned char gf1_pan;
	unsigned char effect_accumulator;
	unsigned char volume_control;
	unsigned char venv_value_next;
	enum snd_gus_volume_state venv_state;
	enum snd_gus_volume_state venv_state_prev;
	unsigned short vlo;
	unsigned short vro;
	unsigned short gf1_effect_volume;
	
	/* --- */

	void *private_data;
	void (*private_free)(struct snd_gus_voice *voice);
};

struct snd_gf1 {

	unsigned int enh_mode:1,	/* enhanced mode (GFA1) */
		     hw_lfo:1,		/* use hardware LFO */
		     sw_lfo:1,		/* use software LFO */
		     effect:1;		/* use effect voices */

	unsigned long port;		/* port of GF1 chip */
	struct resource *res_port1;
	struct resource *res_port2;
	int irq;			/* IRQ number */
	int dma1;			/* DMA1 number */
	int dma2;			/* DMA2 number */
	unsigned int memory;		/* GUS's DRAM size in bytes */
	unsigned int rom_memory;	/* GUS's ROM size in bytes */
	unsigned int rom_present;	/* bitmask */
	unsigned int rom_banks;		/* GUS's ROM banks */

	struct snd_gf1_mem mem_alloc;

	/* registers */
	unsigned short reg_page;
	unsigned short reg_regsel;
	unsigned short reg_data8;
	unsigned short reg_data16;
	unsigned short reg_irqstat;
	unsigned short reg_dram;
	unsigned short reg_timerctrl;
	unsigned short reg_timerdata;
	unsigned char ics_regs[6][2];
	/* --------- */

	unsigned char active_voices;	/* active voices */
	unsigned char active_voice;	/* selected voice (GF1PAGE register) */

	struct snd_gus_voice voices[32];	/* GF1 voices */

	unsigned int default_voice_address;

	unsigned short playback_freq;	/* GF1 playback (mixing) frequency */
	unsigned short mode;		/* see to SNDRV_GF1_MODE_XXXX */
	unsigned char volume_ramp;
	unsigned char smooth_pan;
	unsigned char full_range_pan;
	unsigned char pad0;

	unsigned char *lfos;

	/* interrupt handlers */

	void (*interrupt_handler_midi_out) (struct snd_gus_card * gus);
	void (*interrupt_handler_midi_in) (struct snd_gus_card * gus);
	void (*interrupt_handler_timer1) (struct snd_gus_card * gus);
	void (*interrupt_handler_timer2) (struct snd_gus_card * gus);
	void (*interrupt_handler_dma_write) (struct snd_gus_card * gus);
	void (*interrupt_handler_dma_read) (struct snd_gus_card * gus);

#ifdef CONFIG_SND_DEBUG
	unsigned int interrupt_stat_midi_out;
	unsigned int interrupt_stat_midi_in;
	unsigned int interrupt_stat_timer1;
	unsigned int interrupt_stat_timer2;
	unsigned int interrupt_stat_dma_write;
	unsigned int interrupt_stat_dma_read;
	unsigned int interrupt_stat_voice_lost;
#endif

	/* synthesizer */

	int seq_client;
	struct snd_gus_port seq_ports[4];

	/* timer */

	unsigned short timer_enabled;
	struct snd_timer *timer1;
	struct snd_timer *timer2;

	/* midi */

	unsigned short uart_cmd;
	unsigned int uart_framing;
	unsigned int uart_overrun;

	/* dma operations */

	unsigned int dma_flags;
	unsigned int dma_shared;
	struct snd_gf1_dma_block *dma_data_pcm;
	struct snd_gf1_dma_block *dma_data_pcm_last;
	struct snd_gf1_dma_block *dma_data_synth;
	struct snd_gf1_dma_block *dma_data_synth_last;
	void (*dma_ack)(struct snd_gus_card * gus, void *private_data);
	void *dma_private_data;

	/* pcm */
	int pcm_channels;
	int pcm_alloc_voices;
        unsigned short pcm_volume_level_left;
	unsigned short pcm_volume_level_right;
	unsigned short pcm_volume_level_left1;
	unsigned short pcm_volume_level_right1;
                                
	unsigned char pcm_rcntrl_reg;
	unsigned char pad_end;
};

/* main structure for GUS card */

struct snd_gus_card {
	struct snd_card *card;

	unsigned int
	 initialized: 1,		/* resources were initialized */
	 equal_irq:1,			/* GF1 and CODEC shares IRQ (GUS MAX only) */
	 equal_dma:1,			/* if dma channels are equal (not valid for daughter board) */
	 ics_flag:1,			/* have we ICS mixer chip */
	 ics_flipped:1,			/* ICS mixer have flipped some channels? */
	 codec_flag:1,			/* have we CODEC chip? */
	 max_flag:1,			/* have we GUS MAX card? */
	 max_ctrl_flag:1,		/* have we original GUS MAX card? */
	 daughter_flag:1,		/* have we daughter board? */
	 interwave:1,			/* hey - we have InterWave card */
	 ess_flag:1,			/* ESS chip found... GUS Extreme */
	 ace_flag:1,			/* GUS ACE detected */
	 uart_enable:1;			/* enable MIDI UART */
	unsigned short revision;	/* revision of chip */
	unsigned short max_cntrl_val;	/* GUS MAX control value */
	unsigned short mix_cntrl_reg;	/* mixer control register */
	unsigned short joystick_dac;	/* joystick DAC level */
	int timer_dev;			/* timer device */

	struct snd_gf1 gf1;	/* gf1 specific variables */
	struct snd_pcm *pcm;
	struct snd_pcm_substream *pcm_cap_substream;
	unsigned int c_dma_size;
	unsigned int c_period_size;
	unsigned int c_pos;

	struct snd_rawmidi *midi_uart;
	struct snd_rawmidi_substream *midi_substream_output;
	struct snd_rawmidi_substream *midi_substream_input;

	spinlock_t reg_lock;
	spinlock_t voice_alloc;
	spinlock_t active_voice_lock;
	spinlock_t event_lock;
	spinlock_t dma_lock;
	spinlock_t pcm_volume_level_lock;
	spinlock_t uart_cmd_lock;
	struct mutex dma_mutex;
	struct mutex register_mutex;
};

/* I/O functions for GF1/InterWave chip - gus_io.c */

static inline void snd_gf1_select_voice(struct snd_gus_card * gus, int voice)
{
	unsigned long flags;

	spin_lock_irqsave(&gus->active_voice_lock, flags);
	if (voice != gus->gf1.active_voice) {
		gus->gf1.active_voice = voice;
		outb(voice, GUSP(gus, GF1PAGE));
	}
	spin_unlock_irqrestore(&gus->active_voice_lock, flags);
}

static inline void snd_gf1_uart_cmd(struct snd_gus_card * gus, unsigned char b)
{
	outb(gus->gf1.uart_cmd = b, GUSP(gus, MIDICTRL));
}

static inline unsigned char snd_gf1_uart_stat(struct snd_gus_card * gus)
{
	return inb(GUSP(gus, MIDISTAT));
}

static inline void snd_gf1_uart_put(struct snd_gus_card * gus, unsigned char b)
{
	outb(b, GUSP(gus, MIDIDATA));
}

static inline unsigned char snd_gf1_uart_get(struct snd_gus_card * gus)
{
	return inb(GUSP(gus, MIDIDATA));
}

extern void snd_gf1_delay(struct snd_gus_card * gus);

extern void snd_gf1_ctrl_stop(struct snd_gus_card * gus, unsigned char reg);

extern void snd_gf1_write8(struct snd_gus_card * gus, unsigned char reg, unsigned char data);
extern unsigned char snd_gf1_look8(struct snd_gus_card * gus, unsigned char reg);
static inline unsigned char snd_gf1_read8(struct snd_gus_card * gus, unsigned char reg)
{
	return snd_gf1_look8(gus, reg | 0x80);
}
extern void snd_gf1_write16(struct snd_gus_card * gus, unsigned char reg, unsigned int data);
extern unsigned short snd_gf1_look16(struct snd_gus_card * gus, unsigned char reg);
static inline unsigned short snd_gf1_read16(struct snd_gus_card * gus, unsigned char reg)
{
	return snd_gf1_look16(gus, reg | 0x80);
}
extern void snd_gf1_adlib_write(struct snd_gus_card * gus, unsigned char reg, unsigned char data);
extern void snd_gf1_dram_addr(struct snd_gus_card * gus, unsigned int addr);
extern void snd_gf1_poke(struct snd_gus_card * gus, unsigned int addr, unsigned char data);
extern unsigned char snd_gf1_peek(struct snd_gus_card * gus, unsigned int addr);
extern void snd_gf1_write_addr(struct snd_gus_card * gus, unsigned char reg, unsigned int addr, short w_16bit);
extern unsigned int snd_gf1_read_addr(struct snd_gus_card * gus, unsigned char reg, short w_16bit);
extern void snd_gf1_i_ctrl_stop(struct snd_gus_card * gus, unsigned char reg);
extern void snd_gf1_i_write8(struct snd_gus_card * gus, unsigned char reg, unsigned char data);
extern unsigned char snd_gf1_i_look8(struct snd_gus_card * gus, unsigned char reg);
extern void snd_gf1_i_write16(struct snd_gus_card * gus, unsigned char reg, unsigned int data);
static inline unsigned char snd_gf1_i_read8(struct snd_gus_card * gus, unsigned char reg)
{
	return snd_gf1_i_look8(gus, reg | 0x80);
}
extern unsigned short snd_gf1_i_look16(struct snd_gus_card * gus, unsigned char reg);
static inline unsigned short snd_gf1_i_read16(struct snd_gus_card * gus, unsigned char reg)
{
	return snd_gf1_i_look16(gus, reg | 0x80);
}

extern void snd_gf1_select_active_voices(struct snd_gus_card * gus);

/* gus_lfo.c */

struct _SND_IW_LFO_PROGRAM {
	unsigned short freq_and_control;
	unsigned char depth_final;
	unsigned char depth_inc;
	unsigned short twave;
	unsigned short depth;
};

#if 0
extern irqreturn_t snd_gf1_lfo_effect_interrupt(struct snd_gus_card * gus, snd_gf1_voice_t * voice);
#endif
extern void snd_gf1_lfo_init(struct snd_gus_card * gus);
extern void snd_gf1_lfo_done(struct snd_gus_card * gus);
extern void snd_gf1_lfo_program(struct snd_gus_card * gus, int voice, int lfo_type, struct _SND_IW_LFO_PROGRAM *program);
extern void snd_gf1_lfo_enable(struct snd_gus_card * gus, int voice, int lfo_type);
extern void snd_gf1_lfo_disable(struct snd_gus_card * gus, int voice, int lfo_type);
extern void snd_gf1_lfo_change_freq(struct snd_gus_card * gus, int voice, int lfo_type, int freq);
extern void snd_gf1_lfo_change_depth(struct snd_gus_card * gus, int voice, int lfo_type, int depth);
extern void snd_gf1_lfo_setup(struct snd_gus_card * gus, int voice, int lfo_type, int freq, int current_depth, int depth, int sweep, int shape);
extern void snd_gf1_lfo_shutdown(struct snd_gus_card * gus, int voice, int lfo_type);
#if 0
extern void snd_gf1_lfo_command(struct snd_gus_card * gus, int voice, unsigned char *command);
#endif

/* gus_mem.c */

void snd_gf1_mem_lock(struct snd_gf1_mem * alloc, int xup);
int snd_gf1_mem_xfree(struct snd_gf1_mem * alloc, struct snd_gf1_mem_block * block);
struct snd_gf1_mem_block *snd_gf1_mem_alloc(struct snd_gf1_mem * alloc, int owner,
				       char *name, int size, int w_16,
				       int align, unsigned int *share_id);
int snd_gf1_mem_free(struct snd_gf1_mem * alloc, unsigned int address);
int snd_gf1_mem_free_owner(struct snd_gf1_mem * alloc, int owner);
int snd_gf1_mem_init(struct snd_gus_card * gus);
int snd_gf1_mem_done(struct snd_gus_card * gus);

/* gus_mem_proc.c */

int snd_gf1_mem_proc_init(struct snd_gus_card * gus);

/* gus_dma.c */

int snd_gf1_dma_init(struct snd_gus_card * gus);
int snd_gf1_dma_done(struct snd_gus_card * gus);
int snd_gf1_dma_transfer_block(struct snd_gus_card * gus,
			       struct snd_gf1_dma_block * block,
			       int atomic,
			       int synth);

/* gus_volume.c */

unsigned short snd_gf1_lvol_to_gvol_raw(unsigned int vol);
unsigned short snd_gf1_translate_freq(struct snd_gus_card * gus, unsigned int freq2);

/* gus_reset.c */

void snd_gf1_set_default_handlers(struct snd_gus_card * gus, unsigned int what);
void snd_gf1_smart_stop_voice(struct snd_gus_card * gus, unsigned short voice);
void snd_gf1_stop_voice(struct snd_gus_card * gus, unsigned short voice);
void snd_gf1_stop_voices(struct snd_gus_card * gus, unsigned short v_min, unsigned short v_max);
struct snd_gus_voice *snd_gf1_alloc_voice(struct snd_gus_card * gus, int type, int client, int port);
void snd_gf1_free_voice(struct snd_gus_card * gus, struct snd_gus_voice *voice);
int snd_gf1_start(struct snd_gus_card * gus);
int snd_gf1_stop(struct snd_gus_card * gus);

/* gus_mixer.c */

int snd_gf1_new_mixer(struct snd_gus_card * gus);

/* gus_pcm.c */

int snd_gf1_pcm_new(struct snd_gus_card *gus, int pcm_dev, int control_index);

#ifdef CONFIG_SND_DEBUG
extern void snd_gf1_print_voice_registers(struct snd_gus_card * gus);
#endif

/* gus.c */

int snd_gus_use_inc(struct snd_gus_card * gus);
void snd_gus_use_dec(struct snd_gus_card * gus);
int snd_gus_create(struct snd_card *card,
		   unsigned long port,
		   int irq, int dma1, int dma2,
		   int timer_dev,
		   int voices,
		   int pcm_channels,
		   int effect,
		   struct snd_gus_card ** rgus);
int snd_gus_initialize(struct snd_gus_card * gus);

/* gus_irq.c */

irqreturn_t snd_gus_interrupt(int irq, void *dev_id);
#ifdef CONFIG_SND_DEBUG
void snd_gus_irq_profile_init(struct snd_gus_card *gus);
#endif

/* gus_uart.c */

int snd_gf1_rawmidi_new(struct snd_gus_card *gus, int device);

/* gus_dram.c */
int snd_gus_dram_write(struct snd_gus_card *gus, char __user *ptr,
		       unsigned int addr, unsigned int size);
int snd_gus_dram_read(struct snd_gus_card *gus, char __user *ptr,
		      unsigned int addr, unsigned int size, int rom);

#endif /* __SOUND_GUS_H */