215 lines
7.8 KiB
C
215 lines
7.8 KiB
C
/*
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* Copyright (c) 1994 Christian E. Hopps
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christian E. Hopps.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: disklabel.h,v 1.2 1994/07/04 19:39:59 chopps Exp $
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*/
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#ifndef _MACHINE_DISKLABEL_H_
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#define _MACHINE_DISKLABEL_H_
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#ifndef MAXPARTITIONS
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#define MAXPARTITIONS 16
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#endif
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#define RAW_PART 2 /* Xd0c is raw part. */
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/*
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* used to encode disk minor numbers
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* this should probably be moved to sys/disklabel.h
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*/
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#define DISKUNIT(dev) (minor(dev) / MAXPARTITIONS)
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#define DISKPART(dev) (minor(dev) % MAXPARTITIONS)
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#define MAKEDISKDEV(maj, unit, part) \
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(makedev((maj), ((unit) * MAXPARTITIONS) + (part)))
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/*
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* describes ados Rigid Disk Blocks
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* which are used to partition a drive
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*/
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#define RDBNULL ((u_long)0xffffffff)
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/*
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* you will find rdblock somewhere in [0, RDBMAXBLOCKS)
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*/
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#define RDB_MAXBLOCKS 16
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struct rdblock {
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u_long id; /* 'RDSK' */
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u_long nsumlong; /* number of longs in check sum */
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u_long chksum; /* simple additive with wrap checksum */
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u_long hostid; /* scsi target of host */
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u_long nbytes; /* size of disk blocks */
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u_long flags;
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u_long badbhead; /* linked list of badblocks */
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u_long partbhead; /* linked list of partblocks */
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u_long fsbhead; /* " " of fsblocks */
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u_long driveinit;
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u_long resv1[6]; /* RDBNULL */
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u_long ncylinders; /* number of cylinders on drive */
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u_long nsectors; /* number of sectors per track */
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u_long nheads; /* number of tracks per cylinder */
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u_long interleave;
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u_long park; /* only used with st506 i.e. not */
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u_long resv2[3];
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u_long wprecomp; /* start cyl for write precomp */
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u_long reducedwrite; /* start cyl for reduced write current */
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u_long steprate; /* driver step rate in ?s */
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u_long resv3[5];
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u_long rdblowb; /* lowblock of range for rdb's */
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u_long rdbhighb; /* high block of range for rdb's */
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u_long lowcyl; /* low cylinder of partition area */
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u_long highcyl; /* upper cylinder of partition area */
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u_long secpercyl; /* number of sectors per cylinder */
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u_long parkseconds; /* zero if no park needed */
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u_long resv4[2];
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char diskvendor[8]; /* inquiry stuff */
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char diskproduct[16]; /* inquiry stuff */
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char diskrevision[4]; /* inquiry stuff */
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char contvendor[8]; /* inquiry stuff */
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char contproduct[16]; /* inquiry stuff */
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char contrevision[4]; /* inquiry stuff */
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#if never_use_secsize
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u_long resv5[0];
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#endif
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};
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#define RDBF_LAST 0x1 /* last drive available */
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#define RDBF_LASTLUN 0x2 /* last LUN available */
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#define RDBF_LASTUNIT 0x4 /* last target available */
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#define RDBF_NORESELECT 0x8 /* do not use reselect */
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#define RDBF_DISKID 0x10 /* disk id is valid ?? */
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#define RDBF_CTRLID 0x20 /* ctrl id is valid ?? */
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struct ados_environ {
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u_long tabsize; /* 0: environ table size */
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u_long sizeblock; /* 1: n long words in a block */
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u_long secorg; /* 2: not used must be zero */
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u_long numheads; /* 3: number of surfaces */
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u_long secperblk; /* 4: must be 1 */
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u_long secpertrk; /* 5: blocks per track */
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u_long resvblocks; /* 6: reserved blocks at start */
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u_long prefac; /* 7: must be 0 */
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u_long interleave; /* 8: normally 1 */
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u_long lowcyl; /* 9: low cylinder of partition */
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u_long highcyl; /* 10: upper cylinder of partition */
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u_long numbufs; /* 11: ados: number of buffers */
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u_long membuftype; /* 12: ados: type of bufmem */
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u_long maxtrans; /* 13: maxtrans the ctrlr supports */
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u_long mask; /* 14: mask for valid address */
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u_long bootpri; /* 15: boot priority for autoboot */
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u_long dostype; /* 16: filesystem type */
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u_long baud; /* 17: serial handler baud rate */
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u_long control; /* 18: control word for fs */
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u_long bootblocks; /* 19: blocks containing boot code */
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u_long fsize; /* 20: file system block size */
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u_long frag; /* 21: allowable frags per block */
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u_long cpg; /* 22: cylinders per group */
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};
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struct partblock {
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u_long id; /* 'PART' */
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u_long nsumlong; /* number of longs in check sum */
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u_long chksum; /* simple additive with wrap checksum */
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u_long hostid; /* scsi target of host */
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u_long next; /* next in chain */
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u_long flags; /* see below */
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u_long resv1[3];
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u_char partname[32]; /* (BCPL) part name (may not be unique) */
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u_long resv2[15];
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struct ados_environ e;
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#if never_use_secsize
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u_long extra[9]; /* 8 for extra added to environ */
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#endif
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};
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#define PBF_BOOTABLE 0x1 /* partition is bootable */
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#define PBF_NOMOUNT 0x2 /* partition should be mounted */
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struct badblock {
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u_long id; /* 'BADB' */
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u_long nsumlong; /* number of longs in check sum */
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u_long chksum; /* simple additive with wrap checksum */
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u_long hostid; /* scsi target of host */
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u_long next; /* next in chain */
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u_long resv;
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struct badblockent {
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u_long badblock;
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u_long goodblock;
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} badtab[0]; /* 61 for secsize == 512 */
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};
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struct fsblock {
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u_long id; /* 'FSHD' */
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u_long nsumlong; /* number of longs in check sum */
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u_long chksum; /* simple additive with wrap checksum */
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u_long hostid; /* scsi target of host */
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u_long next; /* next in chain */
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u_long flags;
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u_long resv1[2];
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u_long dostype; /* this is a file system for this type */
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u_long version; /* version of this fs */
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u_long patchflags; /* describes which functions to replace */
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u_long type; /* zero */
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u_long task; /* zero */
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u_long lock; /* zero */
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u_long handler; /* zero */
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u_long stacksize; /* to use when loading handler */
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u_long priority; /* to run the fs at. */
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u_long startup; /* zero */
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u_long lsegblocks; /* linked list of lsegblocks of fs code */
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u_long globalvec; /* bcpl vector not used mostly */
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#if never_use_secsize
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u_long resv2[44];
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#endif
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};
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struct lsegblock {
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u_long id; /* 'LSEG' */
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u_long nsumlong; /* number of longs in check sum */
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u_long chksum; /* simple additive with wrap checksum */
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u_long hostid; /* scsi target of host */
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u_long next; /* next in chain */
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u_long loaddata[0]; /* load segment data, 123 for secsize == 512 */
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};
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#define RDBLOCK_ID 0x5244534b /* 'RDSK' */
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#define PARTBLOCK_ID 0x50415254 /* 'PART' */
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#define BADBLOCK_ID 0x42414442 /* 'BADB' */
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#define FSBLOCK_ID 0x46534844 /* 'FSHD' */
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#define LSEGBLOCK_ID 0x4c534547 /* 'LSEG' */
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struct cpu_disklabel {
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u_long rdblock; /* may be RDBNULL which invalidates */
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u_long pblist[MAXPARTITIONS]; /* partblock number (RDB list order) */
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char pbindex[MAXPARTITIONS]; /* index of pblock (partition order) */
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int valid; /* essential that this is valid */
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};
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#endif /* _MACHINE_DISKLABEL_H_ */
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