/*********************************************************************
 *
 * msnd.h
 *
 * Turtle Beach MultiSound Sound Card Driver for Linux
 *
 * Some parts of this header file were derived from the Turtle Beach
 * MultiSound Driver Development Kit.
 *
 * Copyright (C) 1998 Andrew Veliath
 * Copyright (C) 1993 Turtle Beach Systems, Inc.
 *
 * 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.
 *
 * $Id: msnd.h,v 1.33 1998/11/05 20:26:18 andrewtv Exp $
 *
 ********************************************************************/
#ifndef __MSND_H
#define __MSND_H

#define VERSION			"0.8.2.2"

#define DEFSAMPLERATE		DSP_DEFAULT_SPEED
#define DEFSAMPLESIZE		AFMT_U8
#define DEFCHANNELS		1

#define DEFFIFOSIZE		128

#define SNDCARD_MSND		38

#define SRAM_BANK_SIZE		0x8000
#define SRAM_CNTL_START		0x7F00

#define DSP_BASE_ADDR		0x4000
#define DSP_BANK_BASE		0x4000

#define	HP_ICR			0x00
#define	HP_CVR			0x01
#define	HP_ISR			0x02
#define	HP_IVR			0x03
#define HP_NU			0x04
#define HP_INFO			0x04
#define	HP_TXH			0x05
#define	HP_RXH			0x05
#define	HP_TXM			0x06
#define	HP_RXM			0x06
#define	HP_TXL			0x07
#define	HP_RXL			0x07

#define HP_ICR_DEF		0x00
#define HP_CVR_DEF		0x12
#define HP_ISR_DEF		0x06
#define HP_IVR_DEF		0x0f
#define HP_NU_DEF		0x00

#define	HP_IRQM			0x09

#define	HPR_BLRC		0x08
#define	HPR_SPR1		0x09
#define	HPR_SPR2		0x0A
#define	HPR_TCL0		0x0B
#define	HPR_TCL1		0x0C
#define	HPR_TCL2		0x0D
#define	HPR_TCL3		0x0E
#define	HPR_TCL4		0x0F

#define	HPICR_INIT		0x80
#define HPICR_HM1		0x40
#define HPICR_HM0		0x20
#define HPICR_HF1		0x10
#define HPICR_HF0		0x08
#define	HPICR_TREQ		0x02
#define	HPICR_RREQ		0x01

#define HPCVR_HC		0x80

#define	HPISR_HREQ		0x80
#define HPISR_DMA		0x40
#define HPISR_HF3		0x10
#define HPISR_HF2		0x08
#define	HPISR_TRDY		0x04
#define	HPISR_TXDE		0x02
#define	HPISR_RXDF		0x01

#define	HPIO_290		0
#define	HPIO_260		1
#define	HPIO_250		2
#define	HPIO_240		3
#define	HPIO_230		4
#define	HPIO_220		5
#define	HPIO_210		6
#define	HPIO_3E0		7

#define	HPMEM_NONE		0
#define	HPMEM_B000		1
#define	HPMEM_C800		2
#define	HPMEM_D000		3
#define	HPMEM_D400		4
#define	HPMEM_D800		5
#define	HPMEM_E000		6
#define	HPMEM_E800		7

#define	HPIRQ_NONE		0
#define HPIRQ_5			1
#define HPIRQ_7			2
#define HPIRQ_9			3
#define HPIRQ_10		4
#define HPIRQ_11		5
#define HPIRQ_12		6
#define HPIRQ_15		7

#define	HIMT_PLAY_DONE		0x00
#define	HIMT_RECORD_DONE	0x01
#define	HIMT_MIDI_EOS		0x02
#define	HIMT_MIDI_OUT		0x03

#define	HIMT_MIDI_IN_UCHAR	0x0E
#define	HIMT_DSP		0x0F

#define	HDEX_BASE	       	0x92
#define	HDEX_PLAY_START		(0 + HDEX_BASE)
#define	HDEX_PLAY_STOP		(1 + HDEX_BASE)
#define	HDEX_PLAY_PAUSE		(2 + HDEX_BASE)
#define	HDEX_PLAY_RESUME	(3 + HDEX_BASE)
#define	HDEX_RECORD_START	(4 + HDEX_BASE)
#define	HDEX_RECORD_STOP	(5 + HDEX_BASE)
#define	HDEX_MIDI_IN_START 	(6 + HDEX_BASE)
#define	HDEX_MIDI_IN_STOP	(7 + HDEX_BASE)
#define	HDEX_MIDI_OUT_START	(8 + HDEX_BASE)
#define	HDEX_MIDI_OUT_STOP	(9 + HDEX_BASE)
#define	HDEX_AUX_REQ		(10 + HDEX_BASE)

#define HIWORD(l)		((WORD)((((DWORD)(l)) >> 16) & 0xFFFF))
#define LOWORD(l)		((WORD)(DWORD)(l))
#define HIBYTE(w)		((BYTE)(((WORD)(w) >> 8) & 0xFF))
#define LOBYTE(w)		((BYTE)(w))
#define MAKELONG(low,hi)	((long)(((WORD)(low))|(((DWORD)((WORD)(hi)))<<16)))
#define MAKEWORD(low,hi)	((WORD)(((BYTE)(low))|(((WORD)((BYTE)(hi)))<<8)))

#define PCTODSP_OFFSET(w)	(USHORT)((w)/2)
#define PCTODSP_BASED(w)	(USHORT)(((w)/2) + DSP_BASE_ADDR)
#define DSPTOPC_BASED(w)	(((w) - DSP_BASE_ADDR) * 2)

#ifdef SLOWIO
#  undef outb
#  undef inb
#  define outb			outb_p
#  define inb			inb_p
#endif

#ifdef LINUX20
#  define __initfunc(f)				f
#  define __initdata				/* nothing */
#  define spin_lock_irqsave(junk,flags)		do { save_flags(flags); cli(); } while (0)
#  define spin_unlock_irqrestore(junk,flags)	do { restore_flags(flags); } while (0)
#endif

/* JobQueueStruct */
#define JQS_wStart		0x00
#define JQS_wSize		0x02
#define JQS_wHead		0x04
#define JQS_wTail		0x06
#define JQS__size		0x08

/* DAQueueDataStruct */
#define DAQDS_wStart		0x00
#define DAQDS_wSize		0x02
#define DAQDS_wFormat		0x04
#define DAQDS_wSampleSize	0x06
#define DAQDS_wChannels		0x08
#define DAQDS_wSampleRate	0x0A
#define DAQDS_wIntMsg		0x0C
#define DAQDS_wFlags		0x0E
#define DAQDS__size		0x10

typedef u8			BYTE;
typedef u16			USHORT;
typedef u16			WORD;
typedef u32			DWORD;
typedef volatile BYTE *		LPDAQD;

/* Generic FIFO */
typedef struct {
	size_t n, len;
	char *data;
	int head, tail;
} msnd_fifo;

typedef struct multisound_dev {
	/* Linux device info */
	char *name;
	int dsp_minor, mixer_minor;

	/* Hardware resources */
	int io, numio;
	int memid, irqid;
	int irq, irq_ref;
	unsigned char info;
	volatile BYTE *base;

	/* Motorola 56k DSP SMA */
	volatile BYTE *SMA;
	volatile BYTE *DAPQ, *DARQ, *MODQ, *MIDQ, *DSPQ;
	volatile WORD *pwDSPQData, *pwMIDQData, *pwMODQData;

	/* State variables */
	enum { msndClassic, msndPinnacle } type;
	mode_t mode;
	unsigned long flags;
#define F_RESETTING			0
#define F_HAVEDIGITAL			1
#define F_AUDIO_WRITE_INUSE		2
#define F_WRITING			3
#define F_WRITEBLOCK			4
#define F_WRITEFLUSH			5
#define F_AUDIO_READ_INUSE		6
#define F_READING			7
#define F_READBLOCK			8
#define F_EXT_MIDI_INUSE		9
#define F_INT_MIDI_INUSE		10
#define F_DISABLE_WRITE_NDELAY		11
	struct wait_queue *writeblock, *readblock;
	struct wait_queue *writeflush;
#ifndef LINUX20
	spinlock_t lock;
#endif
	int nresets;
	unsigned long recsrc;
	int left_levels[16];
	int right_levels[16];
	int mixer_mod_count;
	int calibrate_signal;
	int play_sample_size, play_sample_rate, play_channels;
	int play_ndelay;
	int rec_sample_size, rec_sample_rate, rec_channels;
	int rec_ndelay;
	BYTE bCurrentMidiPatch;
	void (*inc_ref)(void);
	void (*dec_ref)(void);

	/* Digital audio FIFOs */
	msnd_fifo DAPF, DARF;
	int fifosize;
	int last_playbank, last_recbank;

	/* MIDI in callback */
	void (*midi_in_interrupt)(struct multisound_dev *);
} multisound_dev_t;

#ifndef mdelay
#  define mdelay(a)		udelay((a) * 1000)
#endif

int				msnd_register(multisound_dev_t *dev);
void				msnd_unregister(multisound_dev_t *dev);
int				msnd_get_num_devs(void);
multisound_dev_t *		msnd_get_dev(int i);

void				msnd_fifo_init(msnd_fifo *f);
void				msnd_fifo_free(msnd_fifo *f);
int				msnd_fifo_alloc(msnd_fifo *f, size_t n);
void				msnd_fifo_make_empty(msnd_fifo *f);
int				msnd_fifo_write(msnd_fifo *f, const char *buf, size_t len, int user);
int				msnd_fifo_read(msnd_fifo *f, char *buf, size_t len, int user);

int				msnd_wait_TXDE(multisound_dev_t *dev);
int				msnd_wait_HC0(multisound_dev_t *dev);
int				msnd_send_dsp_cmd(multisound_dev_t *dev, BYTE cmd);
int				msnd_send_word(multisound_dev_t *dev, unsigned char high,
					       unsigned char mid, unsigned char low);
int				msnd_upload_host(multisound_dev_t *dev, char *bin, int len);
int				msnd_enable_irq(multisound_dev_t *dev);
int				msnd_disable_irq(multisound_dev_t *dev);

#endif /* __MSND_H */