1/*	$NetBSD: disklabel.h,v 1.6 2015/09/26 03:31:52 christos Exp $ */
  2
  3/*
  4 * Copyright (c) 1992, 1993
  5 *	The Regents of the University of California.  All rights reserved.
  6 *
  7 * This software was developed by the Computer Systems Engineering group
  8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
  9 * contributed to Berkeley.
 10 *
 11 * All advertising materials mentioning features or use of this software
 12 * must display the following acknowledgement:
 13 *	This product includes software developed by the University of
 14 *	California, Lawrence Berkeley Laboratory.
 15 *
 16 * Redistribution and use in source and binary forms, with or without
 17 * modification, are permitted provided that the following conditions
 18 * are met:
 19 * 1. Redistributions of source code must retain the above copyright
 20 *    notice, this list of conditions and the following disclaimer.
 21 * 2. Redistributions in binary form must reproduce the above copyright
 22 *    notice, this list of conditions and the following disclaimer in the
 23 *    documentation and/or other materials provided with the distribution.
 24 * 3. Neither the name of the University nor the names of its contributors
 25 *    may be used to endorse or promote products derived from this software
 26 *    without specific prior written permission.
 27 *
 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 31 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 38 * SUCH DAMAGE.
 39 *
 40 *	@(#)sun_disklabel.h	8.1 (Berkeley) 6/11/93
 41 */
 42
 43/*
 44 * SunOS disk label layout (only relevant portions discovered here).
 45 */
 46
 47#include <sys/ioccom.h>
 48
 49#define	SUN_DKMAGIC	55998
 50
 51/* These are the guys that Sun's dkinfo needs... */
 52#define SUN_DKIOCGGEOM	_IOR('d', 2, struct sun_dkgeom)	/* geometry info */
 53#define SUN_DKIOCINFO	_IOR('d', 8, struct sun_dkctlr)	/* controller info */
 54#define SUN_DKIOCGPART	_IOR('d', 4, struct sun_dkpart)	/* partition info */
 55
 56/* geometry info */
 57struct sun_dkgeom {
 58	u_short	sdkc_ncylinders;	/* data cylinders */
 59	u_short	sdkc_acylinders;	/* alternate cylinders */
 60	u_short	sdkc_xxx1;
 61	u_short	sdkc_ntracks;		/* tracks per cylinder */
 62	u_short	sdkc_xxx2;
 63	u_short	sdkc_nsectors;		/* sectors per track */
 64	u_short	sdkc_interleave;	/* interleave factor */
 65	u_short	sdkc_xxx3;
 66	u_short	sdkc_xxx4;
 67	u_short	sdkc_sparespercyl;	/* spare sectors per cylinder */
 68	u_short	sdkc_rpm;		/* rotational speed */
 69	u_short	sdkc_pcylinders;	/* physical cylinders */
 70	u_short	sdkc_xxx5[7];
 71};
 72
 73/* controller info */
 74struct sun_dkctlr {
 75	int	sdkc_addr;		/* controller address */
 76	short	sdkc_unit;		/* unit (slave) address */
 77	short	sdkc_type;		/* controller type */
 78	short	sdkc_flags;		/* flags */
 79};
 80
 81/* partition info */
 82struct sun_dkpart {
 83	int	sdkp_cyloffset;		/* starting cylinder */
 84	int	sdkp_nsectors;		/* number of sectors */
 85};
 86
 87struct sun_disklabel {			/* total size = 512 bytes */
 88	char	sl_text[128];
 89	char	sl_xxx1[292];
 90#define sl_bsdlabel	sl_xxx1		/* Embedded NetBSD label */
 91	u_short sl_rpm;			/* rotational speed */
 92	u_short	sl_pcylinders;		/* number of physical cyls */
 93#define	sl_pcyl	 sl_pcylinders		/* XXX: old sun3 */
 94	u_short sl_sparespercyl;	/* spare sectors per cylinder */
 95	char	sl_xxx3[4];
 96	u_short sl_interleave;		/* interleave factor */
 97	u_short	sl_ncylinders;		/* data cylinders */
 98	u_short	sl_acylinders;		/* alternate cylinders */
 99	u_short	sl_ntracks;		/* tracks per cylinder */
100	u_short	sl_nsectors;		/* sectors per track */
101	char	sl_xxx4[4];
102	struct sun_dkpart sl_part[8];	/* partition layout */
103	u_short	sl_magic;		/* == SUN_DKMAGIC */
104	u_short	sl_cksum;		/* xor checksum of all shorts */
105};
106
107#define SUN_LABELOFFSET	128		/* XXX we don't use this */