/*	$NetBSD: sdvar.h,v 1.6 1998/08/15 01:10:54 thorpej Exp $	*/

/*
 * Copyright (c) 1994, 1995, 1997 Charles M. Hannum.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Charles M. Hannum.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Originally written by Julian Elischer (julian@dialix.oz.au)
 * for TRW Financial Systems for use under the MACH(2.5) operating system.
 *
 * TRW Financial Systems, in accordance with their agreement with Carnegie
 * Mellon University, makes this software available to CMU to distribute
 * or use in any manner that they see fit as long as this message is kept with
 * the software. For this reason TFS also grants any other persons or
 * organisations permission to use or modify this software.
 *
 * TFS supplies this software to be publicly redistributed
 * on the understanding that TFS is not responsible for the correct
 * functioning of this software in any circumstances.
 *
 * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992
 */

#define	SDRETRIES	4

struct sd_ops;

struct sd_softc {
	struct device sc_dev;
	struct disk sc_dk;

	int flags;
#define	SDF_LOCKED	0x01
#define	SDF_WANTED	0x02
#define	SDF_WLABEL	0x04		/* label is writable */
#define	SDF_LABELLING	0x08		/* writing label */
#define	SDF_ANCIENT	0x10		/* disk is ancient; for minphys */
#define	SDF_DIRTY	0x20		/* disk is dirty; needs cache flush */
#define	SDF_FLUSHING	0x40		/* flushing, for sddone() */
	struct scsipi_link *sc_link;	/* contains our targ, lun, etc. */
	struct disk_parms {
		u_long	heads;		/* number of heads */
		u_long	cyls;		/* number of cylinders */
		u_long	sectors;	/* number of sectors/track */
		u_long	blksize;	/* number of bytes/sector */
		u_long	disksize;	/* total number sectors */
		u_long	rot_rate;	/* rotational rate, in RPM */
	} params;
	struct buf buf_queue;
	u_int8_t type;
	char name[16]; /* product name, for default disklabel */
	const struct sd_ops *sc_ops;	/* our bus-dependent ops vector */

	void *sc_sdhook;		/* our shutdown hook */

#if NRND > 0
	rndsource_element_t rnd_source;
#endif
};

struct sd_ops {
	int	(*sdo_get_parms) __P((struct sd_softc *, struct disk_parms *,
		    int));
	void	(*sdo_flush) __P((struct sd_softc *, int));
};
#define	SDGP_RESULT_OK		0	/* paramters obtained */
#define	SDGP_RESULT_OFFLINE	1	/* no media, or otherwise losing */
#define	SDGP_RESULT_UNFORMATTED	2	/* unformatted media (max params) */

void sdattach __P((struct device *, struct sd_softc *, struct scsipi_link *,
    const struct sd_ops *));