/***********************************************************************
 * file: ss_dc.h
 * part#:
 * internal sequence#:
 *
 *	**************************************************************
 *	*     "(c)Copyright Hewlett-Packard Company, 1984.*  All     *
 *	*    rights are reserved.  Copying or other reproduction     *
 *	*    of this program except for archival purposes is         *
 *	*    prohibited without the prior written consent of         *
 *	*    Hewlett-Packard Company."				     *
 *	**************************************************************
 *
 *		Pisces Q-DOS project
 *		Andy Rood  Kernel project lead
 *		Bob Cline  Kernel project engineer
 *		-----------------------------------------------------
 *		initial					1/84   rcc
 *		removed mount strat			7/84	rcc
 */
/**********************************************************************
 * ss_dc.h
 *	This header file contains all the global definition stuff
 *	needed by the ss_dc.c disk driver.  All nifty, handy data
 *	structures and constants are here.
 *********************************************************************/


#define SS_ON 1			/* handy on/off indicators */
#define SS_OFF 0
#define SS_RETRY 5		/* number of error retries on reads and 
				   writes. */
#define SS_FORMCHK 0xFF		/* byte sent to determine if a device 
				   understands the set format command */
#define SS_FORM512 0x02		/* byte to set 512 byte sector size with
				   the set format command */



/*
 * handy structure to package up the important information of a disk
 * transfer
 */

struct ss_xfer {
	dev_t dev;		/* device number */
	unsigned char 	haddr,	/* hpib address */
	    		unit,	/* unit number */
			volume,	/* volume number */
	    		inst;	/* mount instance */
	unsigned int length;	/* number of bytes to transfer */
	unsigned int sector;	/* absolute sector address of the transfer */
	int error;		/* error resulting from transfer */
};

/*
 * handy structure that defines the fields retrieved from an SS-80
 * describe command.	See ss80 manual for a detailed description
 * of the contents of each field.
 */

struct ss_describe_info
	{
	unsigned short cunitmask;
	unsigned short crate;
	unsigned char ctype;

	unsigned char utype;
	unsigned char udev[3];
	unsigned short ubsize;
	unsigned char ubufsize;
	unsigned char uburstsize;
	unsigned short ublocktime;
	unsigned short ulongrate;
	unsigned short uretrytime;
	unsigned short umaxaccess;
	unsigned char umaxinter;
	unsigned char ufixedvol;
	unsigned char uremovevol;

	unsigned char vmaxcyl[3];
	unsigned char vmaxhead;
	unsigned short vmaxsect;
	unsigned short vsvahigh2;
	unsigned int vmaxsva;
	unsigned char vmaxinter;

	};