sys/dev/sun/disklabel.h

   1 /*      $NetBSD: disklabel.h,v 1.2.46.3 2004/09/21 13:33:27 skrll 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 #define SUN_DKMAGIC     55998
  48
  49 /* These are the guys that Sun's dkinfo needs... */
  50 #define DKIOCGGEOM      _IOR('d', 2, struct sun_dkgeom) /* geometry info */
  51 #define DKIOCINFO       _IOR('d', 8, struct sun_dkctlr) /* controller info */
  52 #define DKIOCGPART      _IOR('d', 4, struct sun_dkpart) /* partition info */
  53
  54 /* geometry info */
  55 struct sun_dkgeom {
  56         u_short sdkc_ncylinders;        /* data cylinders */
  57         u_short sdkc_acylinders;        /* alternate cylinders */
  58         u_short sdkc_xxx1;
  59         u_short sdkc_ntracks;           /* tracks per cylinder */
  60         u_short sdkc_xxx2;
  61         u_short sdkc_nsectors;          /* sectors per track */
  62         u_short sdkc_interleave;        /* interleave factor */
  63         u_short sdkc_xxx3;
  64         u_short sdkc_xxx4;
  65         u_short sdkc_sparespercyl;      /* spare sectors per cylinder */
  66         u_short sdkc_rpm;               /* rotational speed */
  67         u_short sdkc_pcylinders;        /* physical cylinders */
  68         u_short sdkc_xxx5[7];
  69 };
  70
  71 /* controller info */
  72 struct sun_dkctlr {
  73         int     sdkc_addr;              /* controller address */
  74         short   sdkc_unit;              /* unit (slave) address */
  75         short   sdkc_type;              /* controller type */
  76         short   sdkc_flags;             /* flags */
  77 };
  78
  79 /* partition info */
  80 struct sun_dkpart {
  81         int     sdkp_cyloffset;         /* starting cylinder */
  82         int     sdkp_nsectors;          /* number of sectors */
  83 };
  84
  85 struct sun_disklabel {                  /* total size = 512 bytes */
  86         char    sl_text[128];
  87         char    sl_xxx1[292];
  88 #define sl_bsdlabel     sl_xxx1         /* Embedded NetBSD label */
  89         u_short sl_rpm;                 /* rotational speed */
  90         u_short sl_pcylinders;          /* number of physical cyls */
  91 #define sl_pcyl  sl_pcylinders          /* XXX: old sun3 */
  92         u_short sl_sparespercyl;        /* spare sectors per cylinder */
  93         char    sl_xxx3[4];
  94         u_short sl_interleave;          /* interleave factor */
  95         u_short sl_ncylinders;          /* data cylinders */
  96         u_short sl_acylinders;          /* alternate cylinders */
  97         u_short sl_ntracks;             /* tracks per cylinder */
  98         u_short sl_nsectors;            /* sectors per track */
  99         char    sl_xxx4[4];
 100         struct sun_dkpart sl_part[8];   /* partition layout */
 101         u_short sl_magic;               /* == SUN_DKMAGIC */
 102         u_short sl_cksum;               /* xor checksum of all shorts */
 103 };
 104
 105 #define SUN_LABELOFFSET 128             /* XXX we don't use this */