1 /* $NetBSD: disklabel.h,v 1.1 2000/05/25 22:11:59 is Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Christian E. Hopps 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Christian E. Hopps. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 #ifndef _MACHINE_DISKLABEL_H_ 33 #define _MACHINE_DISKLABEL_H_ 34 35 #define LABELSECTOR 0 /* sector containing label */ 36 #define LABELOFFSET 64 /* offset of label in sector */ 37 #define MAXPARTITIONS 16 /* number of partitions */ 38 #define RAW_PART 2 /* raw partition: xx?c */ 39 40 /* 41 * describes ados Rigid Disk Blocks 42 * which are used to partition a drive 43 */ 44 #define RDBNULL ((u_long)0xffffffff) 45 46 /* 47 * you will find rdblock somewhere in [0, RDBMAXBLOCKS) 48 */ 49 #define RDB_MAXBLOCKS 16 50 51 struct rdblock { 52 u_long id; /* 'RDSK' */ 53 u_long nsumlong; /* number of longs in check sum */ 54 u_long chksum; /* simple additive with wrap checksum */ 55 u_long hostid; /* scsi target of host */ 56 u_long nbytes; /* size of disk blocks */ 57 u_long flags; 58 u_long badbhead; /* linked list of badblocks */ 59 u_long partbhead; /* linked list of partblocks */ 60 u_long fsbhead; /* " " of fsblocks */ 61 u_long driveinit; 62 u_long resv1[6]; /* RDBNULL */ 63 u_long ncylinders; /* number of cylinders on drive */ 64 u_long nsectors; /* number of sectors per track */ 65 u_long nheads; /* number of tracks per cylinder */ 66 u_long interleave; 67 u_long park; /* only used with st506 i.e. not */ 68 u_long resv2[3]; 69 u_long wprecomp; /* start cyl for write precomp */ 70 u_long reducedwrite; /* start cyl for reduced write current */ 71 u_long steprate; /* driver step rate in ?s */ 72 u_long resv3[5]; 73 u_long rdblowb; /* lowblock of range for rdb's */ 74 u_long rdbhighb; /* high block of range for rdb's */ 75 u_long lowcyl; /* low cylinder of partition area */ 76 u_long highcyl; /* upper cylinder of partition area */ 77 u_long secpercyl; /* number of sectors per cylinder */ 78 u_long parkseconds; /* zero if no park needed */ 79 u_long resv4[2]; 80 char diskvendor[8]; /* inquiry stuff */ 81 char diskproduct[16]; /* inquiry stuff */ 82 char diskrevision[4]; /* inquiry stuff */ 83 char contvendor[8]; /* inquiry stuff */ 84 char contproduct[16]; /* inquiry stuff */ 85 char contrevision[4]; /* inquiry stuff */ 86 #if never_use_secsize 87 u_long resv5[0]; 88 #endif 89 }; 90 91 92 #define RDBF_LAST 0x1 /* last drive available */ 93 #define RDBF_LASTLUN 0x2 /* last LUN available */ 94 #define RDBF_LASTUNIT 0x4 /* last target available */ 95 #define RDBF_NORESELECT 0x8 /* do not use reselect */ 96 #define RDBF_DISKID 0x10 /* disk id is valid ?? */ 97 #define RDBF_CTRLID 0x20 /* ctrl id is valid ?? */ 98 #define RDBF_SYNC 0x40 /* drive supports SCSI synchronous mode */ 99 100 struct ados_environ { 101 u_long tabsize; /* 0: environ table size */ 102 u_long sizeblock; /* 1: n long words in a block */ 103 u_long secorg; /* 2: not used must be zero */ 104 u_long numheads; /* 3: number of surfaces */ 105 u_long secperblk; /* 4: must be 1 */ 106 u_long secpertrk; /* 5: blocks per track */ 107 u_long resvblocks; /* 6: reserved blocks at start */ 108 u_long prefac; /* 7: must be 0 */ 109 u_long interleave; /* 8: normally 1 */ 110 u_long lowcyl; /* 9: low cylinder of partition */ 111 u_long highcyl; /* 10: upper cylinder of partition */ 112 u_long numbufs; /* 11: ados: number of buffers */ 113 u_long membuftype; /* 12: ados: type of bufmem */ 114 u_long maxtrans; /* 13: maxtrans the ctrlr supports */ 115 u_long mask; /* 14: mask for valid address */ 116 u_long bootpri; /* 15: boot priority for autoboot */ 117 u_long dostype; /* 16: filesystem type */ 118 u_long baud; /* 17: serial handler baud rate */ 119 u_long control; /* 18: control word for fs */ 120 u_long bootblocks; /* 19: blocks containing boot code */ 121 u_long fsize; /* 20: file system block size */ 122 u_long frag; /* 21: allowable frags per block */ 123 u_long cpg; /* 22: cylinders per group */ 124 }; 125 126 struct partblock { 127 u_long id; /* 'PART' */ 128 u_long nsumlong; /* number of longs in check sum */ 129 u_long chksum; /* simple additive with wrap checksum */ 130 u_long hostid; /* scsi target of host */ 131 u_long next; /* next in chain */ 132 u_long flags; /* see below */ 133 u_long resv1[3]; 134 u_char partname[32]; /* (BCPL) part name (may not be unique) */ 135 u_long resv2[15]; 136 struct ados_environ e; 137 #if never_use_secsize 138 u_long extra[9]; /* 8 for extra added to environ */ 139 #endif 140 }; 141 142 #define PBF_BOOTABLE 0x1 /* partition is bootable */ 143 #define PBF_NOMOUNT 0x2 /* partition should be mounted */ 144 145 struct badblock { 146 u_long id; /* 'BADB' */ 147 u_long nsumlong; /* number of longs in check sum */ 148 u_long chksum; /* simple additive with wrap checksum */ 149 u_long hostid; /* scsi target of host */ 150 u_long next; /* next in chain */ 151 u_long resv; 152 struct badblockent { 153 u_long badblock; 154 u_long goodblock; 155 } badtab[0]; /* 61 for secsize == 512 */ 156 }; 157 158 struct fsblock { 159 u_long id; /* 'FSHD' */ 160 u_long nsumlong; /* number of longs in check sum */ 161 u_long chksum; /* simple additive with wrap checksum */ 162 u_long hostid; /* scsi target of host */ 163 u_long next; /* next in chain */ 164 u_long flags; 165 u_long resv1[2]; 166 u_long dostype; /* this is a file system for this type */ 167 u_long version; /* version of this fs */ 168 u_long patchflags; /* describes which functions to replace */ 169 u_long type; /* zero */ 170 u_long task; /* zero */ 171 u_long lock; /* zero */ 172 u_long handler; /* zero */ 173 u_long stacksize; /* to use when loading handler */ 174 u_long priority; /* to run the fs at. */ 175 u_long startup; /* zero */ 176 u_long lsegblocks; /* linked list of lsegblocks of fs code */ 177 u_long globalvec; /* bcpl vector not used mostly */ 178 #if never_use_secsize 179 u_long resv2[44]; 180 #endif 181 }; 182 183 struct lsegblock { 184 u_long id; /* 'LSEG' */ 185 u_long nsumlong; /* number of longs in check sum */ 186 u_long chksum; /* simple additive with wrap checksum */ 187 u_long hostid; /* scsi target of host */ 188 u_long next; /* next in chain */ 189 u_long loaddata[0]; /* load segment data, 123 for secsize == 512 */ 190 }; 191 192 #define RDBLOCK_ID 0x5244534b /* 'RDSK' */ 193 #define PARTBLOCK_ID 0x50415254 /* 'PART' */ 194 #define BADBLOCK_ID 0x42414442 /* 'BADB' */ 195 #define FSBLOCK_ID 0x46534844 /* 'FSHD' */ 196 #define LSEGBLOCK_ID 0x4c534547 /* 'LSEG' */ 197 198 struct cpu_disklabel { 199 u_long rdblock; /* may be RDBNULL which invalidates */ 200 u_long pblist[MAXPARTITIONS]; /* partblock number (RDB list order) */ 201 int pbindex[MAXPARTITIONS]; /* index of pblock (partition order) */ 202 int valid; /* essential that this is valid */ 203 }; 204 205 #endif /* _MACHINE_DISKLABEL_H_ */ 206