#ifndef	_IDR_VAR_H
#define	_IDR_VAR_H
#endif



/*
	IKON Corporation 2617 Western Ave. Seattle, WA 98121	(206) 728-6465

	Structure definition file for Solaris 2.0 driver for Sbus DR11-W emulator
	Model 10103


	21 October, 1992	BETA release
*/



	/************************************************************************
	*									*
	*	This driver is provided at no charge to IKON's customers	*
	*	in the hope that it will assist them in understanding and	*
	*	using IKON's Sbus DR11-W emulator (Model 10103).  This code	*
	*	is intended to be a working and (relatively!) bug free driver	*
	*	when running on the machine and OS rev available to IKON.	*
	*	IKON will attempt to keep this code running on current OS and	*
	*	hardware from SUN - and others - but does not guarantee this.	*
	*	The user is encouraged to contact IKON with comments,		*
	*	suggestions, and BUG REPORTS.					*
	************************************************************************/




/*================ DATA STRUCTURES   ===================================*/
struct dmaio_regs {
	u_long	Dmacsr ;	 /* control and status register */
	u_long	Dmaar ;	 /* address register */
	u_long	Dmabcr ;	 /* byte count register */
	u_long	dma_unused ;    /* unused register */
};

/* THERE IS PROBABLY A MORE ELEGANT WAY TO ACCOMPLISH THE FOLLOWING - 
   BUT RATHER THAN WORRY ABOUT ALIGNMENT - WE WILL DO IT THE HARD WAY	*/

struct idr_regs {			/* DR11 working registers	*/
	u_char	Idr_mode ;		/* mode register 		*/
	u_char	idr_unused0 ;		/* pad to next reg		*/
	u_char	idr_unused1 ;
	u_char	idr_unused2 ;
	u_char	idr_unused3[12] ;	/* 16 byte offset between regs	*/
	u_char	Idr_latch ;		/* latched functions		*/
	u_char	idr_unused4 ;
	u_char	idr_unused5 ;
	u_char	idr_unused6 ;
	u_char	idr_unused7[12] ;
	u_char	Idr_p_stat ;		/* w=pulses, r=status/flags	*/
	u_char	idr_unused8 ;
	u_char	idr_unused9 ;
	u_char	idr_unused10 ;	
	u_char	idr_unused11[12] ;
	u_char	Idr_dhi ;		/* data, high byte		*/
	u_char	idr_unused12 ;
	u_char	idr_unused13 ;
	u_char	idr_unused14 ;
	u_char	idr_unused15[12] ;
	u_char	Idr_dlow ;		/* data, low byte		*/
	u_char	idr_unused16 ;
	u_char	idr_unused17 ;
	u_char	idr_unused18 ;
	u_char	idr_unused19[12] ;
	u_char	Idr_rhi ;		/* high 4 bits of range		*/
	u_char	idr_unused20 ;
	u_char	idr_unused21 ;
	u_char	idr_unused22 ;
	u_char	idr_unused23[12] ;
	u_char	Idr_rmid ;		/* mid 8 bits of range		*/
	u_char	idr_unused24 ;
	u_char	idr_unused25 ;
	u_char	idr_unused26 ;
	u_char	idr_unused27[12] ;
	u_char	Idr_rlow ;		/* low 8 bits of range		*/
	u_char	idr_unused28 ;
	u_char	idr_unused29 ;
	u_char	idr_unused30 ;
	u_char	idr_unused31[12] ;	/* pad to 128 bytes.		*/
} ;

struct idr_unit {
	dev_info_t	  	*dip ;			/* devinfo pointer		*/
	kmutex_t		mutex ;			/* mutex lock for this instance	*/
	kcondvar_t		cv ;			/* conditional var for this inst*/
	ddi_iblock_cookie_t	iblock_cookie ;		/* for mutexes			*/
	struct dmaio_regs	*dma_regs_p ;		/* device control regs		*/
	struct idr_regs		*idr_regs_p ;		/* points to working regs	*/
	struct buf		*buf_p ;		/* will point at buffer in use	*/
	u_int			unit_open ;		/* 1 = open			*/
	volatile u_int		unit_flags ;		/* our flag bits here		*/
	u_int			dma_time ;		/* dma timeout # in secs	*/
	u_int			attn_time ;		/* attention wait timeout #	*/	
	u_int			rdy_time ;		/* ready wait timeout #		*/
	u_int			range_resid ;		/* remaining count to xfer	*/
							/* may be used for multi-dma	*/
							/* per dr11 blocks (unused?)	*/
	u_int			read_fcn ;		/* use at read start		*/
	u_int			write_fcn ;		/* use at write start		*/
	u_int			read_pulse ;		/* pulse at read start		*/
	u_int			write_pulse ;		/* pulse at write start		*/
	} ;