cdvar.h

MIPS处理器的bootloader,龙芯就是用的修改过的PMON2

/*	$OpenBSD: cdvar.h,v 1.1 1999/07/20 06:21:59 csapuntz Exp $	*/
/*	$NetBSD: cdvar.h,v 1.10 1999/02/02 13:02:49 bouyer Exp $	*/

/*
 * Copyright (c) 1997 Manuel Bouyer.  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.
 */

#define	CDRETRIES	4

struct cd_ops;

struct cd_softc {
	struct device sc_dev;
	struct disk sc_dk;

	int flags;
#define	CDF_LOCKED	0x01
#define	CDF_WANTED	0x02
#define	CDF_WLABEL	0x04		/* label is writable */
#define	CDF_LABELLING	0x08		/* writing label */
#define	CDF_ANCIENT	0x10		/* disk is ancient; for minphys */
#ifdef CDDA
#define CDF_CDDA        0x20             
#endif
	struct scsi_link *sc_link;	/* contains our targ, lun, etc. */
	struct cd_parms {
		int blksize;
		u_long disksize;	/* total number sectors */
	} params;
#ifdef CDDA
	struct cd_parms orig_params;    /* filled in when CD-DA mode starts */
#endif
	struct buf buf_queue;
	char name[16]; /* product name, for default disklabel */
	const struct cd_ops *sc_ops;	/* our bus-dependent ops vector */

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

struct cd_ops {
	int	(*cdo_setchan) __P((struct cd_softc *, int, int, int, int,
		    int));
	int	(*cdo_getvol) __P((struct cd_softc *, struct ioc_vol *, int));
	int	(*cdo_setvol) __P((struct cd_softc *, const struct ioc_vol *,
		    int));
	int	(*cdo_set_pa_immed) __P((struct cd_softc *, int));
	int	(*cdo_load_unload) __P((struct cd_softc *, int, int));
};