#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 "pcm.h"
#include "rawmidi.h"
#include "timer.h"
#include "seq_midi_emul.h"
#include "seq_device.h"
#include <asm/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, struct snd_pcm ** rpcm);

#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, struct snd_rawmidi **rrawmidi);

/* 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 */