1 /* 2 * Copyright 1991-1998 by Open Software Foundation, Inc. 3 * All Rights Reserved 4 * 5 * Permission to use, copy, modify, and distribute this software and 6 * its documentation for any purpose and without fee is hereby granted, 7 * provided that the above copyright notice appears in all copies and 8 * that both the copyright notice and this permission notice appear in 9 * supporting documentation. 10 * 11 * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 12 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 13 * FOR A PARTICULAR PURPOSE. 14 * 15 * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR 16 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 17 * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, 18 * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION 19 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 */ 21 /* 22 * MkLinux 23 */ 24 /* CMU_HIST */ 25 /* 26 * Revision 2.3.4.2 92/04/30 11:49:19 bernadat 27 * Changes from TRUNK: 28 * We add one more partition so that we can point to the "whole" 29 * disk. It is at slot MAXPARTITIONS. 30 * [92/04/01 rvb] 31 * 32 * Revision 2.3.4.1 92/02/18 18:39:17 jeffreyh 33 * Increase number of disk partitions to 16 to be compatible with 2.5 34 * [92/02/08 bernadat] 35 * 36 * Revision 2.3 91/05/14 15:43:50 mrt 37 * Correcting copyright 38 * 39 * Revision 2.2 91/05/13 06:02:21 af 40 * Created, starting from Reno's disklabel.h (copyright included). 41 * [91/05/03 af] 42 * 43 */ 44 /* CMU_ENDHIST */ 45 /* 46 * Mach Operating System 47 * Copyright (c) 1991,1990,1989 Carnegie Mellon University 48 * All Rights Reserved. 49 * 50 * Permission to use, copy, modify and distribute this software and its 51 * documentation is hereby granted, provided that both the copyright 52 * notice and this permission notice appear in all copies of the 53 * software, derivative works or modified versions, and any portions 54 * thereof, and that both notices appear in supporting documentation. 55 * 56 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 57 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 58 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 59 * 60 * Carnegie Mellon requests users of this software to return to 61 * 62 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 63 * School of Computer Science 64 * Carnegie Mellon University 65 * Pittsburgh PA 15213-3890 66 * 67 * any improvements or extensions that they make and grant Carnegie Mellon 68 * the rights to redistribute these changes. 69 */ 70 /* 71 */ 72 /* 73 * Copyright (c) 1987, 1988 Regents of the University of California. 74 * All rights reserved. 75 * 76 * Redistribution and use in source and binary forms are permitted 77 * provided that the above copyright notice and this paragraph are 78 * duplicated in all such forms and that any documentation, 79 * advertising materials, and other materials related to such 80 * distribution and use acknowledge that the software was developed 81 * by the University of California, Berkeley. The name of the 82 * University may not be used to endorse or promote products derived 83 * from this software without specific prior written permission. 84 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 85 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 86 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 87 * 88 * @(#)disklabel.h 7.10 (Berkeley) 6/27/88 89 */ 90 91 #ifndef _DISK_STATUS_H_ 92 #define _DISK_STATUS_H_ 93 94 #include <device/ds_status.h> 95 96 /* 97 * Each disk has a label which includes information about the hardware 98 * disk geometry, filesystem partitions, and drive specific information. 99 * The label is in block 0 or 1, possibly offset from the beginning 100 * to leave room for a bootstrap, etc. 101 */ 102 103 #ifdef hp_pa 104 105 #ifndef LABELSECTOR 106 #define LABELSECTOR 2 /* sector containing label */ 107 #endif 108 #define LABELOFFSET 0 /* offset of label in sector */ 109 110 #else /* hp_pa */ 111 112 #define LABELSECTOR 0 /* sector containing label */ 113 #define LABELOFFSET 64 /* offset of label in sector */ 114 115 #endif /* hp_pa */ 116 117 #define DISKMAGIC ((uint32) 0x82564557U) /* The disk magic number */ 118 119 #ifndef MAXPARTITIONS 120 #ifdef hp_pa 121 #define MAXPARTITIONS 8 122 #else 123 #define MAXPARTITIONS 16 124 #define PARTITIONS (MAXPARTITIONS + 1) 125 #endif 126 #endif 127 128 #ifndef PARTITIONS 129 #define PARTITIONS MAXPARTITIONS 130 #endif 131 132 #ifndef LOCORE 133 struct disklabel { 134 uint32 d_magic; /* the magic number */ 135 short d_type; /* drive type */ 136 short d_subtype; /* controller/d_type specific */ 137 char d_typename[16]; /* type name, e.g. "eagle" */ 138 /* 139 * d_packname contains the pack identifier and is returned when 140 * the disklabel is read off the disk or in-core copy. 141 * d_boot0 and d_boot1 are the (optional) names of the 142 * primary (block 0) and secondary (block 1-15) bootstraps 143 * as found in /usr/mdec. These are returned when using 144 * getdiskbyname(3) to retrieve the values from /etc/disktab. 145 */ 146 #if defined(MACH_KERNEL) || defined(STANDALONE) 147 char d_packname[16]; /* pack identifier */ 148 #else 149 union { 150 char un_d_packname[16]; /* pack identifier */ 151 struct { 152 char *un_d_boot0; /* primary bootstrap name */ 153 char *un_d_boot1; /* secondary bootstrap name */ 154 } un_b; 155 } d_un; 156 #define d_packname d_un.un_d_packname 157 #define d_boot0 d_un.un_b.un_d_boot0 158 #define d_boot1 d_un.un_b.un_d_boot1 159 #endif /* ! MACH_KERNEL or STANDALONE */ 160 /* disk geometry: */ 161 uint32 d_secsize; /* # of bytes per sector */ 162 uint32 d_nsectors; /* # of data sectors per track */ 163 uint32 d_ntracks; /* # of tracks per cylinder */ 164 uint32 d_ncylinders; /* # of data cylinders per unit */ 165 uint32 d_secpercyl; /* # of data sectors per cylinder */ 166 uint32 d_secperunit; /* # of data sectors per unit */ 167 /* 168 * Spares (bad sector replacements) below 169 * are not counted in d_nsectors or d_secpercyl. 170 * Spare sectors are assumed to be physical sectors 171 * which occupy space at the end of each track and/or cylinder. 172 */ 173 unsigned short d_sparespertrack; /* # of spare sectors per track */ 174 unsigned short d_sparespercyl; /* # of spare sectors per cylinder */ 175 /* 176 * Alternate cylinders include maintenance, replacement, 177 * configuration description areas, etc. 178 */ 179 uint32 d_acylinders; /* # of alt. cylinders per unit */ 180 181 /* hardware characteristics: */ 182 /* 183 * d_interleave, d_trackskew and d_cylskew describe perturbations 184 * in the media format used to compensate for a slow controller. 185 * Interleave is physical sector interleave, set up by the formatter 186 * or controller when formatting. When interleaving is in use, 187 * logically adjacent sectors are not physically contiguous, 188 * but instead are separated by some number of sectors. 189 * It is specified as the ratio of physical sectors traversed 190 * per logical sector. Thus an interleave of 1:1 implies contiguous 191 * layout, while 2:1 implies that logical sector 0 is separated 192 * by one sector from logical sector 1. 193 * d_trackskew is the offset of sector 0 on track N 194 * relative to sector 0 on track N-1 on the same cylinder. 195 * Finally, d_cylskew is the offset of sector 0 on cylinder N 196 * relative to sector 0 on cylinder N-1. 197 */ 198 unsigned short d_rpm; /* rotational speed */ 199 unsigned short d_interleave; /* hardware sector interleave */ 200 unsigned short d_trackskew; /* sector 0 skew, per track */ 201 unsigned short d_cylskew; /* sector 0 skew, per cylinder */ 202 uint32 d_headswitch; /* head switch time, usec */ 203 uint32 d_trkseek; /* track-to-track seek, usec */ 204 uint32 d_flags; /* generic flags */ 205 #define NDDATA 5 206 uint32 d_drivedata[NDDATA]; /* drive-type specific information */ 207 #define NSPARE 5 208 uint32 d_spare[NSPARE]; /* reserved for future use */ 209 uint32 d_magic2; /* the magic number (again) */ 210 unsigned short d_checksum; /* xor of data incl. partitions */ 211 212 /* filesystem and partition information: */ 213 unsigned short d_npartitions; /* number of partitions in following */ 214 uint32 d_bbsize; /* size of boot area at sn0, bytes */ 215 uint32 d_sbsize; /* max size of fs superblock, bytes */ 216 struct label_partition { /* the partition table */ 217 uint32 p_size; /* number of sectors in partition */ 218 uint32 p_offset; /* starting sector */ 219 uint32 p_fsize; /* filesystem basic fragment size */ 220 unsigned char p_fstype; /* filesystem type, see below */ 221 unsigned char p_frag; /* filesystem fragments per block */ 222 unsigned short p_cpg; /* filesystem cylinders per group */ 223 } d_partitions[PARTITIONS]; /* actually may be more */ 224 225 #if defined(__alpha) && defined(MACH_KERNEL) 226 /* 227 * Disgusting hack. If this structure contains a pointer, 228 * as it does for non-kernel, then the compiler rounds 229 * the size to make it pointer-sized properly (arrays of..). 230 * But if I define the pointer for the kernel then instances 231 * of this structure better be aligned otherwise picking 232 * up a short might be done by too-smart compilers (GCC) with 233 * a load-long instruction expecting the short to be aligned. 234 */ 235 int32 bugfix; 236 #endif 237 }; 238 #else /* LOCORE */ 239 /* 240 * offsets for asm boot files. 241 */ 242 .set d_secsize,40 243 .set d_nsectors,44 244 .set d_ntracks,48 245 .set d_ncylinders,52 246 .set d_secpercyl,56 247 .set d_secperunit,60 248 .set d_end_,276 /* size of disk label */ 249 #endif /* LOCORE */ 250 251 /* d_type values: */ 252 #define DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */ 253 #define DTYPE_MSCP 2 /* MSCP */ 254 #define DTYPE_DEC 3 /* other DEC (rk, rl) */ 255 #define DTYPE_SCSI 4 /* SCSI */ 256 #define DTYPE_ESDI 5 /* ESDI interface */ 257 #define DTYPE_ST506 6 /* ST506 etc. */ 258 #define DTYPE_IPI 7 /* IPI */ 259 #define DTYPE_FLOPPY 10 /* floppy */ 260 261 #ifdef DKTYPENAMES 262 static char *dktypenames[] = { 263 "unknown", 264 "SMD", 265 "MSCP", 266 "old DEC", 267 "SCSI", 268 "ESDI", 269 "type 6", 270 "IPI", 271 "type 8", 272 "type 9", 273 "floppy", 274 0 275 }; 276 #define DKMAXTYPES (sizeof(dktypenames) / sizeof(dktypenames[0]) - 1) 277 #endif 278 279 /* 280 * Filesystem type and version. 281 * Used to interpret other filesystem-specific 282 * per-partition information. 283 */ 284 #define FS_UNUSED 0 /* unused */ 285 #define FS_SWAP 1 /* swap */ 286 #define FS_V6 2 /* Sixth Edition */ 287 #define FS_V7 3 /* Seventh Edition */ 288 #define FS_SYSV 4 /* System V */ 289 #define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */ 290 #define FS_V8 6 /* Eighth Edition, 4K blocks */ 291 #define FS_BSDFFS 7 /* 4.2BSD fast file system */ 292 #define FS_LVM 8 /* Partition in use by LVM */ 293 294 #define FS_VENDOR1 16 /* Reserved for vendor use */ 295 #define FS_VENDOR2 17 /* Reserved for vendor use */ 296 #define FS_VENDOR3 18 /* Reserved for vendor use */ 297 #define FS_VENDOR4 19 /* Reserved for vendor use */ 298 #define FS_VENDOR5 20 /* Reserved for vendor use */ 299 #define FS_VENDOR6 21 /* Reserved for vendor use */ 300 #define FS_VENDOR7 22 /* Reserved for vendor use */ 301 #define FS_VENDOR8 23 /* Reserved for vendor use */ 302 #define FS_VENDOR9 24 /* Reserved for vendor use */ 303 #define FS_VENDOR10 25 /* Reserved for vendor use */ 304 #define FS_VENDOR11 26 /* Reserved for vendor use */ 305 #define FS_VENDOR12 27 /* Reserved for vendor use */ 306 #define FS_VENDOR13 28 /* Reserved for vendor use */ 307 #define FS_VENDOR14 29 /* Reserved for vendor use */ 308 #define FS_VENDOR15 30 /* Reserved for vendor use */ 309 #define FS_VENDOR16 31 /* Reserved for vendor use */ 310 311 #ifdef DKTYPENAMES 312 static char *fstypenames[] = { 313 "unused", 314 "swap", 315 "Version 6", 316 "Version 7", 317 "System V", 318 "4.1BSD", 319 "Eighth Edition", 320 "4.2BSD", 321 "LVM", 322 "???", 323 "???", 324 "???", 325 "???", 326 "???", 327 "???", 328 "???", 329 "vendor 1", 330 "vendor 2", 331 "vendor 3", 332 "vendor 4", 333 "vendor 5", 334 "vendor 6", 335 "vendor 7", 336 "vendor 8", 337 "vendor 9", 338 "vendor 10", 339 "vendor 11", 340 "vendor 12", 341 "vendor 13", 342 "vendor 14", 343 "vendor 15", 344 "vendor 16", 345 0 346 }; 347 #define FSMAXTYPES (sizeof(fstypenames) / sizeof(fstypenames[0]) - 1) 348 #endif 349 350 /* 351 * flags shared by various drives: 352 */ 353 #define D_REMOVABLE 0x01 /* removable media */ 354 #define D_ECC 0x02 /* supports ECC */ 355 #define D_BADSECT 0x04 /* supports bad sector forw. */ 356 #define D_RAMDISK 0x08 /* disk emulator */ 357 #define D_CHAIN 0x10 /* can do back-back transfers */ 358 359 /* 360 * Drive data for SMD. 361 */ 362 #define d_smdflags d_drivedata[0] 363 #define D_SSE 0x1 /* supports skip sectoring */ 364 #define d_mindist d_drivedata[1] 365 #define d_maxdist d_drivedata[2] 366 #define d_sdist d_drivedata[3] 367 368 /* 369 * Drive data for ST506. 370 */ 371 #define d_precompcyl d_drivedata[0] 372 #define d_gap3 d_drivedata[1] /* used only when formatting */ 373 374 /* 375 * IBM controller info (d_precompcyl used, too) 376 */ 377 #define d_step d_drivedata[2] 378 379 #ifndef LOCORE 380 /* 381 * Structure used to perform a format 382 * or other raw operation, returning data 383 * and/or register values. 384 * Register identification and format 385 * are device- and driver-dependent. 386 */ 387 struct format_op { 388 char *df_buf; 389 int df_count; /* value-result */ 390 daddr_t df_startblk; 391 int df_reg[8]; /* result */ 392 }; 393 394 /* 395 * Structure used internally to retrieve 396 * information about a partition on a disk. 397 */ 398 struct partinfo { 399 struct disklabel *disklab; 400 struct label_partition *part; 401 }; 402 403 /* 404 * Disk-specific ioctls. 405 */ 406 /* get and set disklabel; DIOCGPART used internally */ 407 #define DIOCGDINFO _IOR('d', 101, struct disklabel)/* get */ 408 #define DIOCSDINFO _IOW('d', 102, struct disklabel)/* set */ 409 #define DIOCWDINFO _IOW('d', 103, struct disklabel)/* set, update disk */ 410 #define DIOCGPART _IOW('d', 104, struct partinfo) /* get partition */ 411 412 /* do format operation, read or write */ 413 #define DIOCRFORMAT _IOWR('d', 105, struct format_op) 414 #define DIOCWFORMAT _IOWR('d', 106, struct format_op) 415 416 #define DIOCSSTEP _IOW('d', 107, int) /* set step rate */ 417 #define DIOCSRETRIES _IOW('d', 108, int) /* set # of retries */ 418 #define DIOCWLABEL _IOW('d', 109, int) /* write en/disable label */ 419 420 #define DIOCSBAD _IOW('d', 110, struct dkbad) /* set kernel dkbad */ 421 422 /* 423 * These are really generic SCSI ioctls and structures 424 * but will probably be used with disks most often 425 */ 426 /* 427 * Structure used to perform SCSI pass-through commands 428 */ 429 struct scsi_io { 430 #define SCSI_CDB_LENGTH 12 431 unsigned char cdb[SCSI_CDB_LENGTH]; 432 unsigned long cmd_count; 433 #define SCSI_NONE (0 << 0) 434 #define MEM_TO_SCSI (1 << 0) 435 #define SCSI_TO_MEM (1 << 1) 436 unsigned long direction; 437 #define SCSI_GOOD 0x00 438 #define SCSI_CHECK_CONDITION 0x01 439 #define SCSI_CONDITION_MET 0x02 440 #define SCSI_BUSY 0x03 441 #define SCSI_INTERMEDIATE 0x04 442 #define SCSI_INTERMEDIATE_CONDITION_MET 0x05 443 #define SCSI_RESERVATION_CONFLICT 0x06 444 #define SCSI_COMMAND_TERMINATED 0x07 445 #define SCSI_QUEUE_FULL 0x08 446 unsigned long status; 447 unsigned long buf_len; 448 #define SCSI_BUF_MAX (2 * 1024) 449 unsigned char scsi_buff[SCSI_BUF_MAX]; 450 }; 451 452 /* SCSI pass-through command */ 453 #define DIOCSCSI _IOWR('d', 111, struct scsi_io) 454 455 /* 456 * Structure used to get SCSI device physical information 457 */ 458 struct scsi_phys { 459 unsigned long slot; 460 unsigned char controller; 461 unsigned char target_id; 462 unsigned char lun; 463 }; 464 465 /* Get SCSI device physical information */ 466 #define DIOCGPHYS _IOR('d', 112, struct scsi_phys) 467 /* Just get partition information. Used interally in unix server. */ 468 #define DIOCGPINFO _IOR('d', 113, struct label_partition) 469 /* Get the mach record size. */ 470 #define DIOMRINFO _IOR('d', 114, int) 471 472 #endif /* LOCORE */ 473 474 #endif /* _DISK_STATUS_H_ */ 475