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

	structure definition file for Solaris 2.0 driver
	for Sbus hardcopy boards



	BETA release	20 October, 1992

*/


	/************************************************************************
	*									*
	*	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 hardcopy interface products.  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 ihcp_regs {			/* hardcopy working registers	*/
	u_char	Ihcp_lf ;		/* latched functions 		*/
	u_char	ihcp_unused0 ;		/* pad to next reg		*/
	u_char	ihcp_unused1 ;
	u_char	ihcp_unused2 ;
	u_char	ihcp_unused3[12] ;	/* 16 byte offset between regs	*/
	u_char	Ihcp_is_do ;		/* interface status/data out	*/
	u_char	ihcp_unused4 ;
	u_char	ihcp_unused5 ;
	u_char	ihcp_unused6 ;
	u_char	ihcp_unused7[12] ;
	u_char	Ihcp_ds_co ;		/* device status/command out	*/
	u_char	ihcp_unused8 ;
	u_char	ihcp_unused9 ;
	u_char	ihcp_unused10 ;	
	u_char	ihcp_unused11[12] ;
	u_char	Ihcp_ri ;		/* reset interrupt flag		*/
	u_char	ihcp_unused12 ;
	u_char	ihcp_unused13 ;
	u_char	ihcp_unused14 ;
	u_char	ihcp_unused15[12] ;
	u_char	Ihcp_sa ;		/* software ack			*/
	u_char	ihcp_unused16 ;
	u_char	ihcp_unused17 ;
	u_char	ihcp_unused18 ;
	u_char	ihcp_unused19[12] ;
	u_char	Ihcp_mc ;		/* master clear board		*/
	u_char	ihcp_unused20 ;
	u_char	ihcp_unused21 ;
	u_char	ihcp_unused22 ;
	u_char	ihcp_unused23[12] ;
	u_char	Ihcp_test0 ;		/* factory use !!!		*/
	u_char	ihcp_unused24 ;
	u_char	ihcp_unused25 ;
	u_char	ihcp_unused26 ;
	u_char	ihcp_unused27[12] ;
	u_char	Ihcp_test1 ;		/* more factory use. more !!!	*/
	u_char	ihcp_unused28 ;
	u_char	ihcp_unused29 ;
	u_char	ihcp_unused30 ;
	u_char	ihcp_unused31[12] ;	/* pad to 128 bytes.		*/
} ;


struct ihcp_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 ;		/* points to DMA control regs	*/
	struct ihcp_regs	*ihcp_regs_p ;		/* points to working regs	*/
	struct buf		*buf_p ;		/* will point at buffer in use	*/
	u_char			unit_open ;		/* 1 = open			*/
	u_char			open_inhibit ;		/* 1 = open not allowed		*/
	u_char			mode ;			/* copy of print/plot mode	*/
	u_char			spare_0 ;		/* alignment byte		*/
	volatile u_int		unit_flags ;		/* our flag bits here		*/
	u_int			dma_time ;		/* dma timeout # in secs	*/
	u_int			fifo_time ;		/* empty and <1/2 full #	*/
	int			saved_instance ;	/* for future ref & error logging */
	} ;