sound/oss/dev_table.h - kernel/msm-4.9 - Gitiles

 /*
  *	dev_table.h
  *
  *	Global definitions for 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.
  */


 #ifndef _DEV_TABLE_H_
 #define _DEV_TABLE_H_

 #include <linux/spinlock.h>
 /*
  * Sound card numbers 27 to 999. (1 to 26 are defined in soundcard.h)
  * Numbers 1000 to N are reserved for driver's internal use.
  */

 #define SNDCARD_DESKPROXL		27	/* Compaq Deskpro XL */
 #define SNDCARD_VIDC			28	/* ARMs VIDC */
 #define SNDCARD_SBPNP			29
 #define SNDCARD_SOFTOSS			36
 #define SNDCARD_VMIDI			37
 #define SNDCARD_OPL3SA1			38	/* Note: clash in msnd.h */
 #define SNDCARD_OPL3SA1_SB		39
 #define SNDCARD_OPL3SA1_MPU		40
 #define SNDCARD_WAVEFRONT               41
 #define SNDCARD_OPL3SA2                 42
 #define SNDCARD_OPL3SA2_MPU             43
 #define SNDCARD_WAVEARTIST              44	/* Waveartist */
 #define SNDCARD_OPL3SA2_MSS             45	/* Originally missed */
 #define SNDCARD_AD1816                  88

 /*
  *	NOTE! 	NOTE!	NOTE!	NOTE!
  *
  *	If you modify this file, please check the dev_table.c also.
  *
  *	NOTE! 	NOTE!	NOTE!	NOTE!
  */

 struct driver_info
 {
 	char *driver_id;
 	int card_subtype;	/* Driver specific. Usually 0 */
 	int card_type;		/*	From soundcard.h	*/
 	char *name;
 	void (*attach) (struct address_info *hw_config);
 	int (*probe) (struct address_info *hw_config);
 	void (*unload) (struct address_info *hw_config);
 };

 struct card_info
 {
 	int card_type;	/* Link (search key) to the driver list */
 	struct address_info config;
 	int enabled;
 	void *for_driver_use;
 };


 /*
  * Device specific parameters (used only by dmabuf.c)
  */
 #define MAX_SUB_BUFFERS		(32*MAX_REALTIME_FACTOR)

 #define DMODE_NONE		0
 #define DMODE_OUTPUT		PCM_ENABLE_OUTPUT
 #define DMODE_INPUT		PCM_ENABLE_INPUT

 struct dma_buffparms
 {
 	int      dma_mode;	/* DMODE_INPUT, DMODE_OUTPUT or DMODE_NONE */
 	int	 closing;

 	/*
  	 * Pointers to raw buffers
  	 */

   	char     *raw_buf;
     	unsigned long   raw_buf_phys;
 	int buffsize;

      	/*
          * Device state tables
          */

 	unsigned long flags;
 #define DMA_BUSY	0x00000001
 #define DMA_RESTART	0x00000002
 #define DMA_ACTIVE	0x00000004
 #define DMA_STARTED	0x00000008
 #define DMA_EMPTY	0x00000010
 #define DMA_ALLOC_DONE	0x00000020
 #define DMA_SYNCING	0x00000040
 #define DMA_DIRTY	0x00000080
 #define DMA_POST	0x00000100
 #define DMA_NODMA	0x00000200
 #define DMA_NOTIMEOUT	0x00000400

 	int      open_mode;

 	/*
 	 * Queue parameters.
 	 */
 	int      qlen;
 	int      qhead;
 	int      qtail;
 	spinlock_t lock;

 	int	 cfrag;	/* Current incomplete fragment (write) */

 	int      nbufs;
 	int      counts[MAX_SUB_BUFFERS];
 	int      subdivision;

 	int      fragment_size;
         int	 needs_reorg;
 	int	 max_fragments;

 	int	 bytes_in_use;

 	int	 underrun_count;
 	unsigned long	 byte_counter;
 	unsigned long	 user_counter;
 	unsigned long	 max_byte_counter;
 	int	 data_rate; /* Bytes/second */

 	int	 mapping_flags;
 #define			DMA_MAP_MAPPED		0x00000001
 	char	neutral_byte;
 	int	dma;		/* DMA channel */

 	int     applic_profile;	/* Application profile (APF_*) */
 	/* Interrupt callback stuff */
 	void (*audio_callback) (int dev, int parm);
 	int callback_parm;

 	int	 buf_flags[MAX_SUB_BUFFERS];
 #define		 BUFF_EOF		0x00000001 /* Increment eof count */
 #define		 BUFF_DIRTY		0x00000002 /* Buffer written */
 };

 /*
  * Structure for use with various microcontrollers and DSP processors
  * in the recent sound cards.
  */
 typedef struct coproc_operations
 {
 	char name[64];
 	struct module *owner;
 	int (*open) (void *devc, int sub_device);
 	void (*close) (void *devc, int sub_device);
 	int (*ioctl) (void *devc, unsigned int cmd, void __user * arg, int local);
 	void (*reset) (void *devc);

 	void *devc;		/* Driver specific info */
 } coproc_operations;

 struct audio_driver
 {
 	struct module *owner;
 	int (*open) (int dev, int mode);
 	void (*close) (int dev);
 	void (*output_block) (int dev, unsigned long buf,
 			      int count, int intrflag);
 	void (*start_input) (int dev, unsigned long buf,
 			     int count, int intrflag);
 	int (*ioctl) (int dev, unsigned int cmd, void __user * arg);
 	int (*prepare_for_input) (int dev, int bufsize, int nbufs);
 	int (*prepare_for_output) (int dev, int bufsize, int nbufs);
 	void (*halt_io) (int dev);
 	int (*local_qlen)(int dev);
 	void (*copy_user) (int dev,
 			char *localbuf, int localoffs,
                         const char __user *userbuf, int useroffs,
                         int max_in, int max_out,
                         int *used, int *returned,
                         int len);
 	void (*halt_input) (int dev);
 	void (*halt_output) (int dev);
 	void (*trigger) (int dev, int bits);
 	int (*set_speed)(int dev, int speed);
 	unsigned int (*set_bits)(int dev, unsigned int bits);
 	short (*set_channels)(int dev, short channels);
 	void (*postprocess_write)(int dev); 	/* Device spesific postprocessing for written data */
 	void (*preprocess_read)(int dev); 	/* Device spesific preprocessing for read data */
 	void (*mmap)(int dev);
 };

 struct audio_operations
 {
         char name[128];
 	int flags;
 #define NOTHING_SPECIAL 	0x00
 #define NEEDS_RESTART		0x01
 #define DMA_AUTOMODE		0x02
 #define DMA_DUPLEX		0x04
 #define DMA_PSEUDO_AUTOMODE	0x08
 #define DMA_HARDSTOP		0x10
 #define DMA_EXACT		0x40
 #define DMA_NORESET		0x80
 	int  format_mask;	/* Bitmask for supported audio formats */
 	void *devc;		/* Driver specific info */
 	struct audio_driver *d;
 	void *portc;		/* Driver specific info */
 	struct dma_buffparms *dmap_in, *dmap_out;
 	struct coproc_operations *coproc;
 	int mixer_dev;
 	int enable_bits;
  	int open_mode;
 	int go;
 	int min_fragment;	/* 0 == unlimited */
 	int max_fragment;	/* 0 == unlimited */
 	int parent_dev;		/* 0 -> no parent, 1 to n -> parent=parent_dev+1 */

 	/* fields formerly in dmabuf.c */
 	wait_queue_head_t in_sleeper;
 	wait_queue_head_t out_sleeper;
 	wait_queue_head_t poll_sleeper;

 	/* fields formerly in audio.c */
 	int audio_mode;

 #define		AM_NONE		0
 #define		AM_WRITE	OPEN_WRITE
 #define 	AM_READ		OPEN_READ

 	int local_format;
 	int audio_format;
 	int local_conversion;
 #define CNV_MU_LAW	0x00000001

 	/* large structures at the end to keep offsets small */
 	struct dma_buffparms dmaps[2];
 };

 int *load_mixer_volumes(char *name, int *levels, int present);

 struct mixer_operations
 {
 	struct module *owner;
 	char id[16];
 	char name[64];
 	int (*ioctl) (int dev, unsigned int cmd, void __user * arg);

 	void *devc;
 	int modify_counter;
 };

 struct synth_operations
 {
 	struct module *owner;
 	char *id;	/* Unique identifier (ASCII) max 29 char */
 	struct synth_info *info;
 	int midi_dev;
 	int synth_type;
 	int synth_subtype;

 	int (*open) (int dev, int mode);
 	void (*close) (int dev);
 	int (*ioctl) (int dev, unsigned int cmd, void __user * arg);
 	int (*kill_note) (int dev, int voice, int note, int velocity);
 	int (*start_note) (int dev, int voice, int note, int velocity);
 	int (*set_instr) (int dev, int voice, int instr);
 	void (*reset) (int dev);
 	void (*hw_control) (int dev, unsigned char *event);
 	int (*load_patch) (int dev, int format, const char __user *addr,
 	     int offs, int count, int pmgr_flag);
 	void (*aftertouch) (int dev, int voice, int pressure);
 	void (*controller) (int dev, int voice, int ctrl_num, int value);
 	void (*panning) (int dev, int voice, int value);
 	void (*volume_method) (int dev, int mode);
 	void (*bender) (int dev, int chn, int value);
 	int (*alloc_voice) (int dev, int chn, int note, struct voice_alloc_info *alloc);
 	void (*setup_voice) (int dev, int voice, int chn);
 	int (*send_sysex)(int dev, unsigned char *bytes, int len);

  	struct voice_alloc_info alloc;
  	struct channel_info chn_info[16];
 	int emulation;
 #define	EMU_GM			1	/* General MIDI */
 #define	EMU_XG			2	/* Yamaha XG */
 #define MAX_SYSEX_BUF	64
 	unsigned char sysex_buf[MAX_SYSEX_BUF];
 	int sysex_ptr;
 };

 struct midi_input_info
 {
 	/* MIDI input scanner variables */
 #define MI_MAX	10
 	volatile int             m_busy;
     	unsigned char   m_buf[MI_MAX];
 	unsigned char	m_prev_status;	/* For running status */
     	int             m_ptr;
 #define MST_INIT			0
 #define MST_DATA			1
 #define MST_SYSEX			2
     	int             m_state;
     	int             m_left;
 };

 struct midi_operations
 {
 	struct module *owner;
 	struct midi_info info;
 	struct synth_operations *converter;
 	struct midi_input_info in_info;
 	int (*open) (int dev, int mode,
 		void (*inputintr)(int dev, unsigned char data),
 		void (*outputintr)(int dev)
 		);
 	void (*close) (int dev);
 	int (*ioctl) (int dev, unsigned int cmd, void __user * arg);
 	int (*outputc) (int dev, unsigned char data);
 	int (*start_read) (int dev);
 	int (*end_read) (int dev);
 	void (*kick)(int dev);
 	int (*command) (int dev, unsigned char *data);
 	int (*buffer_status) (int dev);
 	int (*prefix_cmd) (int dev, unsigned char status);
 	struct coproc_operations *coproc;
 	void *devc;
 };

 struct sound_lowlev_timer
 {
 	int dev;
 	int priority;
 	unsigned int (*tmr_start)(int dev, unsigned int usecs);
 	void (*tmr_disable)(int dev);
 	void (*tmr_restart)(int dev);
 };

 struct sound_timer_operations
 {
 	struct module *owner;
 	struct sound_timer_info info;
 	int priority;
 	int devlink;
 	int (*open)(int dev, int mode);
 	void (*close)(int dev);
 	int (*event)(int dev, unsigned char *ev);
 	unsigned long (*get_time)(int dev);
 	int (*ioctl) (int dev, unsigned int cmd, void __user * arg);
 	void (*arm_timer)(int dev, long time);
 };

 extern struct sound_timer_operations default_sound_timer;

 extern struct audio_operations *audio_devs[MAX_AUDIO_DEV];
 extern int num_audiodevs;
 extern struct mixer_operations *mixer_devs[MAX_MIXER_DEV];
 extern int num_mixers;
 extern struct synth_operations *synth_devs[MAX_SYNTH_DEV+MAX_MIDI_DEV];
 extern int num_synths;
 extern struct midi_operations *midi_devs[MAX_MIDI_DEV];
 extern int num_midis;
 extern struct sound_timer_operations * sound_timer_devs[MAX_TIMER_DEV];
 extern int num_sound_timers;

 extern int sound_map_buffer (int dev, struct dma_buffparms *dmap, buffmem_desc *info);
 void sound_timer_init (struct sound_lowlev_timer *t, char *name);
 void sound_dma_intr (int dev, struct dma_buffparms *dmap, int chan);

 #define AUDIO_DRIVER_VERSION	2
 #define MIXER_DRIVER_VERSION	2
 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);
 int sound_install_mixer(int vers, char *name, struct mixer_operations *driver,
 			int driver_size, void *devc);

 void sound_unload_audiodev(int dev);
 void sound_unload_mixerdev(int dev);
 void sound_unload_mididev(int dev);
 void sound_unload_synthdev(int dev);
 void sound_unload_timerdev(int dev);
 int sound_alloc_mixerdev(void);
 int sound_alloc_timerdev(void);
 int sound_alloc_synthdev(void);
 int sound_alloc_mididev(void);
 #endif	/* _DEV_TABLE_H_ */
	/*
	* dev_table.h
	*
	* Global definitions for 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.
	*/


	#ifndef _DEV_TABLE_H_
	#define _DEV_TABLE_H_

	#include <linux/spinlock.h>
	/*
	* Sound card numbers 27 to 999. (1 to 26 are defined in soundcard.h)
	* Numbers 1000 to N are reserved for driver's internal use.
	*/

	#define SNDCARD_DESKPROXL 27 /* Compaq Deskpro XL */
	#define SNDCARD_VIDC 28 /* ARMs VIDC */
	#define SNDCARD_SBPNP 29
	#define SNDCARD_SOFTOSS 36
	#define SNDCARD_VMIDI 37
	#define SNDCARD_OPL3SA1 38 /* Note: clash in msnd.h */
	#define SNDCARD_OPL3SA1_SB 39
	#define SNDCARD_OPL3SA1_MPU 40
	#define SNDCARD_WAVEFRONT 41
	#define SNDCARD_OPL3SA2 42
	#define SNDCARD_OPL3SA2_MPU 43
	#define SNDCARD_WAVEARTIST 44 /* Waveartist */
	#define SNDCARD_OPL3SA2_MSS 45 /* Originally missed */
	#define SNDCARD_AD1816 88

	/*
	* NOTE! NOTE! NOTE! NOTE!
	*
	* If you modify this file, please check the dev_table.c also.
	*
	* NOTE! NOTE! NOTE! NOTE!
	*/

	struct driver_info
	{
	char *driver_id;
	int card_subtype; /* Driver specific. Usually 0 */
	int card_type; /* From soundcard.h */
	char *name;
	void (attach) (struct address_info hw_config);
	int (probe) (struct address_info hw_config);
	void (unload) (struct address_info hw_config);
	};

	struct card_info
	{
	int card_type; /* Link (search key) to the driver list */
	struct address_info config;
	int enabled;
	void *for_driver_use;
	};


	/*
	* Device specific parameters (used only by dmabuf.c)
	*/
	#define MAX_SUB_BUFFERS (32*MAX_REALTIME_FACTOR)

	#define DMODE_NONE 0
	#define DMODE_OUTPUT PCM_ENABLE_OUTPUT
	#define DMODE_INPUT PCM_ENABLE_INPUT

	struct dma_buffparms
	{
	int dma_mode; /* DMODE_INPUT, DMODE_OUTPUT or DMODE_NONE */
	int closing;

	/*
	* Pointers to raw buffers
	*/

	char *raw_buf;
	unsigned long raw_buf_phys;
	int buffsize;

	/*
	* Device state tables
	*/

	unsigned long flags;
	#define DMA_BUSY 0x00000001
	#define DMA_RESTART 0x00000002
	#define DMA_ACTIVE 0x00000004
	#define DMA_STARTED 0x00000008
	#define DMA_EMPTY 0x00000010
	#define DMA_ALLOC_DONE 0x00000020
	#define DMA_SYNCING 0x00000040
	#define DMA_DIRTY 0x00000080
	#define DMA_POST 0x00000100
	#define DMA_NODMA 0x00000200
	#define DMA_NOTIMEOUT 0x00000400

	int open_mode;

	/*
	* Queue parameters.
	*/
	int qlen;
	int qhead;
	int qtail;
	spinlock_t lock;

	int cfrag; /* Current incomplete fragment (write) */

	int nbufs;
	int counts[MAX_SUB_BUFFERS];
	int subdivision;

	int fragment_size;
	int needs_reorg;
	int max_fragments;

	int bytes_in_use;

	int underrun_count;
	unsigned long byte_counter;
	unsigned long user_counter;
	unsigned long max_byte_counter;
	int data_rate; /* Bytes/second */

	int mapping_flags;
	#define DMA_MAP_MAPPED 0x00000001
	char neutral_byte;
	int dma; /* DMA channel */

	int applic_profile; /* Application profile (APF_) /
	/* Interrupt callback stuff */
	void (*audio_callback) (int dev, int parm);
	int callback_parm;

	int buf_flags[MAX_SUB_BUFFERS];
	#define BUFF_EOF 0x00000001 /* Increment eof count */
	#define BUFF_DIRTY 0x00000002 /* Buffer written */
	};

	/*
	* Structure for use with various microcontrollers and DSP processors
	* in the recent sound cards.
	*/
	typedef struct coproc_operations
	{
	char name[64];
	struct module *owner;
	int (open) (void devc, int sub_device);
	void (close) (void devc, int sub_device);
	int (ioctl) (void devc, unsigned int cmd, void __user * arg, int local);
	void (reset) (void devc);

	void devc; / Driver specific info */
	} coproc_operations;

	struct audio_driver
	{
	struct module *owner;
	int (*open) (int dev, int mode);
	void (*close) (int dev);
	void (*output_block) (int dev, unsigned long buf,
	int count, int intrflag);
	void (*start_input) (int dev, unsigned long buf,
	int count, int intrflag);
	int (ioctl) (int dev, unsigned int cmd, void __user arg);
	int (*prepare_for_input) (int dev, int bufsize, int nbufs);
	int (*prepare_for_output) (int dev, int bufsize, int nbufs);
	void (*halt_io) (int dev);
	int (*local_qlen)(int dev);
	void (*copy_user) (int dev,
	char *localbuf, int localoffs,
	const char __user *userbuf, int useroffs,
	int max_in, int max_out,
	int used, int returned,
	int len);
	void (*halt_input) (int dev);
	void (*halt_output) (int dev);
	void (*trigger) (int dev, int bits);
	int (*set_speed)(int dev, int speed);
	unsigned int (*set_bits)(int dev, unsigned int bits);
	short (*set_channels)(int dev, short channels);
	void (postprocess_write)(int dev); / Device spesific postprocessing for written data */
	void (preprocess_read)(int dev); / Device spesific preprocessing for read data */
	void (*mmap)(int dev);
	};

	struct audio_operations
	{
	char name[128];
	int flags;
	#define NOTHING_SPECIAL 0x00
	#define NEEDS_RESTART 0x01
	#define DMA_AUTOMODE 0x02
	#define DMA_DUPLEX 0x04
	#define DMA_PSEUDO_AUTOMODE 0x08
	#define DMA_HARDSTOP 0x10
	#define DMA_EXACT 0x40
	#define DMA_NORESET 0x80
	int format_mask; /* Bitmask for supported audio formats */
	void devc; / Driver specific info */
	struct audio_driver *d;
	void portc; / Driver specific info */
	struct dma_buffparms dmap_in, dmap_out;
	struct coproc_operations *coproc;
	int mixer_dev;
	int enable_bits;
	int open_mode;
	int go;
	int min_fragment; /* 0 == unlimited */
	int max_fragment; /* 0 == unlimited */
	int parent_dev; /* 0 -> no parent, 1 to n -> parent=parent_dev+1 */

	/* fields formerly in dmabuf.c */
	wait_queue_head_t in_sleeper;
	wait_queue_head_t out_sleeper;
	wait_queue_head_t poll_sleeper;

	/* fields formerly in audio.c */
	int audio_mode;

	#define AM_NONE 0
	#define AM_WRITE OPEN_WRITE
	#define AM_READ OPEN_READ

	int local_format;
	int audio_format;
	int local_conversion;
	#define CNV_MU_LAW 0x00000001

	/* large structures at the end to keep offsets small */
	struct dma_buffparms dmaps[2];
	};

	int load_mixer_volumes(char name, int *levels, int present);

	struct mixer_operations
	{
	struct module *owner;
	char id[16];
	char name[64];
	int (ioctl) (int dev, unsigned int cmd, void __user arg);

	void *devc;
	int modify_counter;
	};

	struct synth_operations
	{
	struct module *owner;
	char id; / Unique identifier (ASCII) max 29 char */
	struct synth_info *info;
	int midi_dev;
	int synth_type;
	int synth_subtype;

	int (*open) (int dev, int mode);
	void (*close) (int dev);
	int (ioctl) (int dev, unsigned int cmd, void __user arg);
	int (*kill_note) (int dev, int voice, int note, int velocity);
	int (*start_note) (int dev, int voice, int note, int velocity);
	int (*set_instr) (int dev, int voice, int instr);
	void (*reset) (int dev);
	void (hw_control) (int dev, unsigned char event);
	int (load_patch) (int dev, int format, const char __user addr,
	int offs, int count, int pmgr_flag);
	void (*aftertouch) (int dev, int voice, int pressure);
	void (*controller) (int dev, int voice, int ctrl_num, int value);
	void (*panning) (int dev, int voice, int value);
	void (*volume_method) (int dev, int mode);
	void (*bender) (int dev, int chn, int value);
	int (alloc_voice) (int dev, int chn, int note, struct voice_alloc_info alloc);
	void (*setup_voice) (int dev, int voice, int chn);
	int (send_sysex)(int dev, unsigned char bytes, int len);

	struct voice_alloc_info alloc;
	struct channel_info chn_info[16];
	int emulation;
	#define EMU_GM 1 /* General MIDI */
	#define EMU_XG 2 /* Yamaha XG */
	#define MAX_SYSEX_BUF 64
	unsigned char sysex_buf[MAX_SYSEX_BUF];
	int sysex_ptr;
	};

	struct midi_input_info
	{
	/* MIDI input scanner variables */
	#define MI_MAX 10
	volatile int m_busy;
	unsigned char m_buf[MI_MAX];
	unsigned char m_prev_status; /* For running status */
	int m_ptr;
	#define MST_INIT 0
	#define MST_DATA 1
	#define MST_SYSEX 2
	int m_state;
	int m_left;
	};

	struct midi_operations
	{
	struct module *owner;
	struct midi_info info;
	struct synth_operations *converter;
	struct midi_input_info in_info;
	int (*open) (int dev, int mode,
	void (*inputintr)(int dev, unsigned char data),
	void (*outputintr)(int dev)
	);
	void (*close) (int dev);
	int (ioctl) (int dev, unsigned int cmd, void __user arg);
	int (*outputc) (int dev, unsigned char data);
	int (*start_read) (int dev);
	int (*end_read) (int dev);
	void (*kick)(int dev);
	int (command) (int dev, unsigned char data);
	int (*buffer_status) (int dev);
	int (*prefix_cmd) (int dev, unsigned char status);
	struct coproc_operations *coproc;
	void *devc;
	};

	struct sound_lowlev_timer
	{
	int dev;
	int priority;
	unsigned int (*tmr_start)(int dev, unsigned int usecs);
	void (*tmr_disable)(int dev);
	void (*tmr_restart)(int dev);
	};

	struct sound_timer_operations
	{
	struct module *owner;
	struct sound_timer_info info;
	int priority;
	int devlink;
	int (*open)(int dev, int mode);
	void (*close)(int dev);
	int (event)(int dev, unsigned char ev);
	unsigned long (*get_time)(int dev);
	int (ioctl) (int dev, unsigned int cmd, void __user arg);
	void (*arm_timer)(int dev, long time);
	};

	extern struct sound_timer_operations default_sound_timer;

	extern struct audio_operations *audio_devs[MAX_AUDIO_DEV];
	extern int num_audiodevs;
	extern struct mixer_operations *mixer_devs[MAX_MIXER_DEV];
	extern int num_mixers;
	extern struct synth_operations *synth_devs[MAX_SYNTH_DEV+MAX_MIDI_DEV];
	extern int num_synths;
	extern struct midi_operations *midi_devs[MAX_MIDI_DEV];
	extern int num_midis;
	extern struct sound_timer_operations * sound_timer_devs[MAX_TIMER_DEV];
	extern int num_sound_timers;

	extern int sound_map_buffer (int dev, struct dma_buffparms dmap, buffmem_desc info);
	void sound_timer_init (struct sound_lowlev_timer t, char name);
	void sound_dma_intr (int dev, struct dma_buffparms *dmap, int chan);

	#define AUDIO_DRIVER_VERSION 2
	#define MIXER_DRIVER_VERSION 2
	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);
	int sound_install_mixer(int vers, char name, struct mixer_operations driver,
	int driver_size, void *devc);

	void sound_unload_audiodev(int dev);
	void sound_unload_mixerdev(int dev);
	void sound_unload_mididev(int dev);
	void sound_unload_synthdev(int dev);
	void sound_unload_timerdev(int dev);
	int sound_alloc_mixerdev(void);
	int sound_alloc_timerdev(void);
	int sound_alloc_synthdev(void);
	int sound_alloc_mididev(void);
	#endif /* _DEV_TABLE_H_ */