#ifndef __GUS_H
#define __GUS_H

/*
 *  Global structures used for GUS part of ALSA driver
 *  Copyright (c) by Jaroslav Kysela <perex@suse.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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include "pcm1.h"
#include "mixer.h"
#include "midi.h"
#include "timer.h"
#include "seq_midi_emul.h"
#include "ainstr_iw.h"

/* IO ports */

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

#define SND_g_u_s_MIDICTRL		(0x320-0x220)
#define SND_g_u_s_MIDISTAT		(0x320-0x220)
#define SND_g_u_s_MIDIDATA		(0x321-0x220)

#define SND_g_u_s_GF1PAGE		(0x322-0x220)
#define SND_g_u_s_GF1REGSEL		(0x323-0x220)
#define SND_g_u_s_GF1DATALOW		(0x324-0x220)
#define SND_g_u_s_GF1DATAHIGH		(0x325-0x220)
#define SND_g_u_s_IRQSTAT		(0x226-0x220)
#define SND_g_u_s_TIMERCNTRL		(0x228-0x220)
#define SND_g_u_s_TIMERDATA		(0x229-0x220)
#define SND_g_u_s_DRAM			(0x327-0x220)
#define SND_g_u_s_MIXCNTRLREG		(0x220-0x220)
#define SND_g_u_s_IRQDMACNTRLREG	(0x22b-0x220)
#define SND_g_u_s_REGCNTRLS		(0x22f-0x220)
#define SND_g_u_s_BOARDVERSION		(0x726-0x220)
#define SND_g_u_s_MIXCNTRLPORT		(0x726-0x220)
#define SND_g_u_s_IVER			(0x325-0x220)
#define SND_g_u_s_MIXDATAPORT		(0x326-0x220)
#define SND_g_u_s_MAXCNTRLPORT		(0x326-0x220)

/* GF1 registers */

/* global registers */
#define SND_GF1_GB_ACTIVE_VOICES		0x0e
#define SND_GF1_GB_VOICES_IRQ			0x0f
#define SND_GF1_GB_GLOBAL_MODE			0x19
#define SND_GF1_GW_LFO_BASE			0x1a
#define SND_GF1_GB_VOICES_IRQ_READ		0x1f
#define SND_GF1_GB_DRAM_DMA_CONTROL		0x41
#define SND_GF1_GW_DRAM_DMA_LOW			0x42
#define SND_GF1_GW_DRAM_IO_LOW			0x43
#define SND_GF1_GB_DRAM_IO_HIGH			0x44
#define SND_GF1_GB_SOUND_BLASTER_CONTROL	0x45
#define SND_GF1_GB_ADLIB_TIMER_1		0x46
#define SND_GF1_GB_ADLIB_TIMER_2		0x47
#define SND_GF1_GB_RECORD_RATE			0x48
#define SND_GF1_GB_REC_DMA_CONTROL		0x49
#define SND_GF1_GB_JOYSTICK_DAC_LEVEL		0x4b
#define SND_GF1_GB_RESET			0x4c
#define SND_GF1_GB_DRAM_DMA_HIGH		0x50
#define SND_GF1_GW_DRAM_IO16			0x51
#define SND_GF1_GW_MEMORY_CONFIG		0x52
#define SND_GF1_GB_MEMORY_CONTROL		0x53
#define SND_GF1_GW_FIFO_RECORD_BASE_ADDR	0x54
#define SND_GF1_GW_FIFO_PLAY_BASE_ADDR		0x55
#define SND_GF1_GW_FIFO_SIZE			0x56
#define SND_GF1_GW_INTERLEAVE			0x57
#define SND_GF1_GB_COMPATIBILITY		0x59
#define SND_GF1_GB_DECODE_CONTROL		0x5a
#define SND_GF1_GB_VERSION_NUMBER		0x5b
#define SND_GF1_GB_MPU401_CONTROL_A		0x5c
#define SND_GF1_GB_MPU401_CONTROL_B		0x5d
#define SND_GF1_GB_EMULATION_IRQ		0x60
/* voice specific registers */
#define SND_GF1_VB_ADDRESS_CONTROL		0x00
#define SND_GF1_VW_FREQUENCY			0x01
#define SND_GF1_VW_START_HIGH			0x02
#define SND_GF1_VW_START_LOW			0x03
#define SND_GF1_VA_START			SND_GF1_VW_START_HIGH
#define SND_GF1_VW_END_HIGH			0x04
#define SND_GF1_VW_END_LOW			0x05
#define SND_GF1_VA_END				SND_GF1_VW_END_HIGH
#define SND_GF1_VB_VOLUME_RATE			0x06
#define SND_GF1_VB_VOLUME_START			0x07
#define SND_GF1_VB_VOLUME_END			0x08
#define SND_GF1_VW_VOLUME			0x09
#define SND_GF1_VW_CURRENT_HIGH			0x0a
#define SND_GF1_VW_CURRENT_LOW			0x0b
#define SND_GF1_VA_CURRENT			SND_GF1_VW_CURRENT_HIGH
#define SND_GF1_VB_PAN				0x0c
#define SND_GF1_VW_OFFSET_RIGHT			0x0c
#define SND_GF1_VB_VOLUME_CONTROL		0x0d
#define SND_GF1_VB_UPPER_ADDRESS		0x10
#define SND_GF1_VW_EFFECT_HIGH			0x11
#define SND_GF1_VW_EFFECT_LOW			0x12
#define SND_GF1_VA_EFFECT			SND_GF1_VW_EFFECT_HIGH
#define SND_GF1_VW_OFFSET_LEFT			0x13
#define SND_GF1_VB_ACCUMULATOR			0x14
#define SND_GF1_VB_MODE				0x15
#define SND_GF1_VW_EFFECT_VOLUME		0x16
#define SND_GF1_VB_FREQUENCY_LFO		0x17
#define SND_GF1_VB_VOLUME_LFO			0x18
#define SND_GF1_VW_OFFSET_RIGHT_FINAL		0x1b
#define SND_GF1_VW_OFFSET_LEFT_FINAL		0x1c
#define SND_GF1_VW_EFFECT_VOLUME_FINAL		0x1d

/* ICS registers */

#define SND_ICS_MIC_DEV		0
#define SND_ICS_LINE_DEV	1
#define SND_ICS_CD_DEV		2
#define SND_ICS_GF1_DEV		3
#define SND_ICS_NONE_DEV	4
#define SND_ICS_MASTER_DEV	5

/* LFO */

#define SND_LFO_TREMOLO		0
#define SND_LFO_VIBRATO		1

/* misc */

#define SND_GF1_DMA_UNSIGNED	0x80
#define SND_GF1_DMA_16BIT	0x40
#define SND_GF1_DMA_IRQ		0x20
#define SND_GF1_DMA_WIDTH16	0x04
#define SND_GF1_DMA_READ	0x02	/* read from GUS's DRAM */
#define SND_GF1_DMA_ENABLE	0x01

/* ramp ranges */

#define SND_GF1_ATTEN(x)	(snd_gf1_atten_table[x])
#define SND_GF1_VOLUME(x)	(snd_gf1_atten_table[x] << 1)
#define SND_GF1_MIN_VOLUME	1800
#define SND_GF1_MAX_VOLUME	4095
#define SND_GF1_MIN_OFFSET	(SND_GF1_MIN_VOLUME>>4)
#define SND_GF1_MAX_OFFSET	255
#define SND_GF1_MAX_TDEPTH	90

/* defines for memory manager */

#define SND_GF1_MEM_BLOCK_16BIT		0x0001

#define SND_GF1_MEM_OWNER_DRIVER	0x0001
#define SND_GF1_MEM_OWNER_WAVE_SIMPLE	0x0002
#define SND_GF1_MEM_OWNER_WAVE_GF1	0x0003
#define SND_GF1_MEM_OWNER_WAVE_IWFFFF	0x0004

/* modes */

#define SND_GF1_MODE_ENGINE		0x0001
#define SND_GF1_MODE_TIMER		0x0002
#define SND_GF1_MODE_PCM_PLAY		0x0004
#define SND_GF1_MODE_PCM_RECORD		0x0008
#define SND_GF1_MODE_PCM		0x000c

/* indexs for voice_ranges array */

#define SND_GF1_VOICE_RANGES		3
#define SND_GF1_VOICE_RANGE_SYNTH	0
#define SND_GF1_VOICE_RANGE_PCM		1
#define SND_GF1_VOICE_RANGE_EFFECT	2

/* constants for interrupt handlers */

#define SND_GF1_HANDLER_MIDI_OUT	0x00010000
#define SND_GF1_HANDLER_MIDI_IN		0x00020000
#define SND_GF1_HANDLER_TIMER1		0x00040000
#define SND_GF1_HANDLER_TIMER2		0x00080000
#define SND_GF1_HANDLER_RANGE		0x00100000
#define SND_GF1_HANDLER_DMA_WRITE	0x00200000
#define SND_GF1_HANDLER_DMA_READ	0x00400000
#define SND_GF1_HANDLER_ALL		(0xffff0000&~SND_GF1_HANDLER_RANGE)

/* constants for DMA flags */

#define SND_GF1_DMA_TRIGGER		1
#define SND_GF1_DMA_SLEEP		2

/* --- */

struct snd_stru_gus_card;
typedef struct snd_stru_gus_card snd_gus_card_t;

/* GF1 specific structure */

typedef struct snd_stru_gf1_bank_info {
	unsigned int address;
	unsigned int size;
} snd_gf1_bank_info_t;

typedef struct snd_stru_gf1_mem_block {
	unsigned short flags;	/* flags - SND_GF1_MEM_BLOCK_XXXX */
	unsigned short owner;	/* owner - SND_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_stru_gf1_mem_block *next;
	struct snd_stru_gf1_mem_block *prev;
} snd_gf1_mem_block_t;

typedef struct snd_stru_gf1_mem {
	snd_gf1_bank_info_t banks_8[4];
	snd_gf1_bank_info_t banks_16[4];
	snd_gf1_mem_block_t *first;
	snd_gf1_mem_block_t *last;
	snd_info_entry_t *info_entry;
	snd_mutex_define(memory);
} snd_gf1_mem_t;

typedef struct snd_gf1_dma_block {
	void *buffer;		/* buffer in computer's RAM */
	unsigned int addr;	/* address in onboard memory */
	unsigned int count;	/* count in bytes */
	unsigned int cmd;	/* DMA command (format) */
} snd_gf1_dma_block_t;

typedef struct {
	snd_midi_channel_set_t * chset;
	snd_gus_card_t * gus;
	int mode;		/* operation mode */
	int client;		/* sequencer client number */
} snd_gus_port_t;

struct snd_stru_gf1 {

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

	unsigned short port;		/* port of GF1 chip */
	snd_irq_t * irqptr;		/* IRQ pointer */
	snd_dma_t * dma1ptr;		/* DMA1 pointer */
	snd_dma_t * dma2ptr;		/* DMA2 pointer */
	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 */

	snd_gf1_mem_t mem_alloc;
	snd_info_entry_t *ram_entries[4];
	snd_info_entry_t *rom_entries[4];

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

	unsigned int default_voice_address;

	unsigned short playback_freq;	/* GF1 playback (mixing) frequency */
	unsigned short mode;		/* see to SND_GF1_MODE_XXXX */

	unsigned char *lfos;

	/* special interrupt handlers / callbacks */

	struct SND_STRU_GF1_VOICE_RANGE {
		unsigned short rvoices;		/* requested voices */
		unsigned short voices;		/* total voices for this range */
		unsigned short min, max;	/* minimal & maximal voice */
#ifdef CONFIG_SND_INTERRUPTS_PROFILE
		unsigned int interrupt_stat_wave;
		unsigned int interrupt_stat_volume;
#endif
		void (*interrupt_handler_wave) (snd_gus_card_t * gus, int voice);
		void (*interrupt_handler_volume) (snd_gus_card_t * gus, int voice);
		void (*voices_change_start) (snd_gus_card_t * gus);
		void (*voices_change_stop) (snd_gus_card_t * gus);
		void (*volume_change) (snd_gus_card_t * gus);
	} voice_ranges[SND_GF1_VOICE_RANGES];

	/* interrupt handlers */

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

	/* synthesizer */

	int seq_client;
	snd_gus_port_t seq_ports[4];
	snd_seq_kinstr_list_t *ilist;
	snd_iwffff_ops_t iwffff_ops;

	/* timer */

	unsigned short timer_enabled;
	snd_timer_t *timer1;
	snd_timer_t *timer2;

	/* midi */

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

	/* dma operations */

	unsigned int dma_flags;
	unsigned int dma_shared;
	snd_gf1_dma_block_t *dma_data;
	unsigned int dma_blocks;
	unsigned int dma_used;
	unsigned int dma_head;
	unsigned int dma_tail;

	/* pcm */

	unsigned char *pcm_buffer;
	unsigned int pcm_memory;
	unsigned short pcm_pflags;
	unsigned int pcm_pos;
	unsigned char pcm_voice_ctrl, pcm_ramp_ctrl;
	unsigned int pcm_bpos;
	unsigned int pcm_blocks;
	unsigned int pcm_block_size;
	unsigned int pcm_mmap_mask;
	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_volume[32];
	unsigned char pcm_pan[32];
	unsigned char pcm_rcntrl_reg;
};

/* main structure for GUS card */

struct snd_stru_gus_card {
	snd_card_t *card;

	unsigned int 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 */
	 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_stru_gf1 gf1;	/* gf1 specific variables */
	snd_pcm_t *pcm;
	snd_rawmidi_t *midi_uart;

	snd_spin_define(reg);
	snd_spin_define(active_voice);
	snd_spin_define(playback);
	snd_spin_define(dma);
	snd_spin_define(pcm_volume_level);
	snd_spin_define(uart_cmd);
	snd_spin_define(neutral);
	snd_mutex_define(dma);
	snd_mutex_define(register);
	snd_sleep_define(neutral);
	snd_sleep_define(clear);
};

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

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

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

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

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

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

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

extern void snd_gf1_delay(snd_gus_card_t * gus);

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

extern void snd_gf1_write8(snd_gus_card_t * gus, unsigned char reg, unsigned char data);
extern unsigned char snd_gf1_look8(snd_gus_card_t * gus, unsigned char reg);
extern inline unsigned char snd_gf1_read8(snd_gus_card_t * gus, unsigned char reg)
{
	return snd_gf1_look8(gus, reg | 0x80);
}
extern void snd_gf1_write16(snd_gus_card_t * gus, unsigned char reg, unsigned int data);
extern unsigned short snd_gf1_look16(snd_gus_card_t * gus, unsigned char reg);
extern inline unsigned short snd_gf1_read16(snd_gus_card_t * gus, unsigned char reg)
{
	return snd_gf1_look16(gus, reg | 0x80);
}
extern void snd_gf1_adlib_write(snd_gus_card_t * gus, unsigned char reg, unsigned char data);
extern void snd_gf1_dram_addr(snd_gus_card_t * gus, unsigned int addr);
extern void snd_gf1_poke(snd_gus_card_t * gus, unsigned int addr, unsigned char data);
extern unsigned char snd_gf1_peek(snd_gus_card_t * gus, unsigned int addr);
extern void snd_gf1_pokew(snd_gus_card_t * gus, unsigned int addr, unsigned short data);
extern unsigned short snd_gf1_peekw(snd_gus_card_t * gus, unsigned int addr);
extern void snd_gf1_dram_setmem(snd_gus_card_t * gus, unsigned int addr, unsigned short value, unsigned int count);
extern void snd_gf1_write_addr(snd_gus_card_t * gus, unsigned char reg, unsigned int addr, short w_16bit);
extern unsigned int snd_gf1_read_addr(snd_gus_card_t * gus, unsigned char reg, short w_16bit);
extern void snd_gf1_i_ctrl_stop(snd_gus_card_t * gus, unsigned char reg);
extern void snd_gf1_i_write8(snd_gus_card_t * gus, unsigned char reg, unsigned char data);
extern unsigned char snd_gf1_i_look8(snd_gus_card_t * gus, unsigned char reg);
extern void snd_gf1_i_write16(snd_gus_card_t * gus, unsigned char reg, unsigned int data);
extern inline unsigned char snd_gf1_i_read8(snd_gus_card_t * gus, unsigned char reg)
{
	return snd_gf1_i_look8(gus, reg | 0x80);
}
extern unsigned short snd_gf1_i_look16(snd_gus_card_t * gus, unsigned char reg);
extern inline unsigned short snd_gf1_i_read16(snd_gus_card_t * gus, unsigned char reg)
{
	return snd_gf1_i_look16(gus, reg | 0x80);
}
extern void snd_gf1_i_adlib_write(snd_gus_card_t * gus, unsigned char reg, unsigned char data);
extern void snd_gf1_i_write_addr(snd_gus_card_t * gus, unsigned char reg, unsigned int addr, short w_16bit);
extern unsigned int snd_gf1_i_read_addr(snd_gus_card_t * gus, unsigned char reg, short w_16bit);

extern void snd_gf1_reselect_active_voices(snd_gus_card_t * gus);

/* gus_lfo.c */

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

/* gus_mem.c */

void snd_gf1_mem_lock(snd_gf1_mem_t * alloc, int xup);
int snd_gf1_mem_xfree(snd_gf1_mem_t * alloc, snd_gf1_mem_block_t * block);
snd_gf1_mem_block_t *snd_gf1_mem_look(snd_gf1_mem_t * alloc,
				      unsigned int address);
snd_gf1_mem_block_t *snd_gf1_mem_share(snd_gf1_mem_t * alloc,
				       unsigned int *share_id);
snd_gf1_mem_block_t *snd_gf1_mem_alloc(snd_gf1_mem_t * alloc, int owner,
				       char *name, int size, int w_16,
				       int align, unsigned int *share_id);
int snd_gf1_mem_free(snd_gf1_mem_t * alloc, unsigned int address);
int snd_gf1_mem_free_owner(snd_gf1_mem_t * alloc, int owner);
int snd_gf1_mem_init(snd_gus_card_t * gus);
int snd_gf1_mem_done(snd_gus_card_t * gus);

/* gus_mem_proc.c */

int snd_gf1_mem_proc_init(snd_gus_card_t * gus);
int snd_gf1_mem_proc_done(snd_gus_card_t * gus);

/* gus_dma.c */

void snd_gf1_dma_program(snd_gus_card_t * gus, unsigned int addr,
			 const void *buf, unsigned int count,
			 unsigned int cmd);
void snd_gf1_dma_ack(snd_gus_card_t * gus);
int snd_gf1_dma_init(snd_gus_card_t * gus);
int snd_gf1_dma_done(snd_gus_card_t * gus);
int snd_gf1_dma_transfer_block(snd_gus_card_t * gus,
			       unsigned int addr,
			       void *buffer,
			       unsigned int count,
			       unsigned int cmd);

/* gus_volume.c */

unsigned short snd_gf1_lvol_to_gvol_raw(unsigned int vol);
unsigned int snd_gf1_gvol_to_lvol_raw(unsigned short gf1_vol);
unsigned int snd_gf1_calc_ramp_rate(snd_gus_card_t * gus,
				    unsigned short start,
				    unsigned short end,
				    unsigned int us);
unsigned short snd_gf1_translate_freq(snd_gus_card_t * gus, unsigned int freq2);
unsigned short snd_gf1_compute_pitchbend(unsigned short pitchbend, unsigned short sens);
unsigned short snd_gf1_compute_freq(unsigned int freq,
				    unsigned int rate,
				    unsigned short mix_rate);

/* gus_reset.c */

void snd_gf1_set_default_handlers(snd_gus_card_t * gus, unsigned int what);
void snd_gf1_smart_stop_voice(snd_gus_card_t * gus, unsigned short voice);
void snd_gf1_stop_voice(snd_gus_card_t * gus, unsigned short voice);
void snd_gf1_clear_voices(snd_gus_card_t * gus, unsigned short v_min, unsigned short v_max);
void snd_gf1_stop_voices(snd_gus_card_t * gus, unsigned short v_min, unsigned short v_max);
int snd_gf1_start(snd_gus_card_t * gus);
int snd_gf1_stop(snd_gus_card_t * gus);
void snd_gf1_open(snd_gus_card_t * gus, unsigned short mode);
void snd_gf1_close(snd_gus_card_t * gus, unsigned short mode);

/* gus_mixer.c */

snd_kmixer_t *snd_gf1_new_mixer(snd_gus_card_t * gus);

/* gus_pcm.c */

snd_pcm_t *snd_gf1_pcm_new_device(snd_gus_card_t * gus, snd_kmixer_t * mixer,
				  snd_kmixer_element_t * parent, int pcm_dev);

#ifdef CONFIG_SND_DEBUG
extern void snd_gf1_print_voice_registers(snd_gus_card_t * gus);
extern void snd_gf1_print_global_registers(snd_gus_card_t * gus);
extern void snd_gf1_print_setup_registers(snd_gus_card_t * gus);
extern void snd_gf1_peek_print_block(snd_gus_card_t * gus, unsigned int addr, int count, int w_16bit);
#endif

/* gus.c */

void snd_gus_use_inc(snd_gus_card_t * gus);
void snd_gus_use_dec(snd_gus_card_t * gus);
snd_gus_card_t *snd_gus_new_card(snd_card_t * card,
				 unsigned short port,
				 snd_irq_t * irqnum,
				 snd_dma_t * dma1num,
				 snd_dma_t * dma2num,
				 int timer_dev);
int snd_gus_set_port(snd_gus_card_t * card, unsigned short port);
int snd_gus_detect_memory(snd_gus_card_t * gus);
int snd_gus_init_dma_irq(snd_gus_card_t * gus, int latches);
void snd_gus_init_control(snd_gus_card_t * gus);
#ifdef CONFIG_SND_SEQUENCER
int snd_gus_attach_synthesizer(snd_gus_card_t * gus);
int snd_gus_detach_synthesizer(snd_gus_card_t * gus);
#endif
int snd_gus_check_version(snd_gus_card_t * gus);

/* gus_irq.c */

void snd_gus_interrupt(snd_gus_card_t * gus, unsigned char status);

/* gus_uart.c */

snd_rawmidi_t *snd_gf1_rawmidi_new_device(snd_gus_card_t * gus);

#if 0
extern void snd_engine_instrument_register(unsigned short mode,
		struct SND_STRU_INSTRUMENT_VOICE_COMMANDS *voice_cmds,
		struct SND_STRU_INSTRUMENT_NOTE_COMMANDS *note_cmds,
	      	struct SND_STRU_INSTRUMENT_CHANNEL_COMMANDS *channel_cmds);
extern int snd_engine_instrument_register_ask(unsigned short mode);
#endif

/* gus_intr.c */
#ifdef CONFIG_SND_SEQUENCER
int snd_gus_iwffff_put_sample(void *private_data, iwffff_wave_t *wave,
			      char *data, long len, int atomic);
int snd_gus_iwffff_get_sample(void *private_data, iwffff_wave_t *wave,
			      char *data, long len, int atomic);
int snd_gus_iwffff_remove_sample(void *private_data, iwffff_wave_t *wave,
				 int atomic);
#endif

/* gus_dram.c */
#ifdef CONFIG_SND_SEQUENCER
int snd_gus_dram_write(snd_gus_card_t *gus, char *ptr,
		       unsigned int addr, unsigned int size);
int snd_gus_dram_read(snd_gus_card_t *gus, char *ptr,
		      unsigned int addr, unsigned int size, int rom);
#endif

#endif				/* __GUS_H */
