| 1 | /* $NetBSD: disk.h,v 1.67 2016/04/27 02:19:12 christos Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1996, 1997, 2004 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, |
| 9 | * NASA Ames Research Center. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 22 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 24 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 30 | * POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | /* |
| 34 | * Copyright (c) 1992, 1993 |
| 35 | * The Regents of the University of California. All rights reserved. |
| 36 | * |
| 37 | * This software was developed by the Computer Systems Engineering group |
| 38 | * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and |
| 39 | * contributed to Berkeley. |
| 40 | * |
| 41 | * All advertising materials mentioning features or use of this software |
| 42 | * must display the following acknowledgement: |
| 43 | * This product includes software developed by the University of |
| 44 | * California, Lawrence Berkeley Laboratories. |
| 45 | * |
| 46 | * Redistribution and use in source and binary forms, with or without |
| 47 | * modification, are permitted provided that the following conditions |
| 48 | * are met: |
| 49 | * 1. Redistributions of source code must retain the above copyright |
| 50 | * notice, this list of conditions and the following disclaimer. |
| 51 | * 2. Redistributions in binary form must reproduce the above copyright |
| 52 | * notice, this list of conditions and the following disclaimer in the |
| 53 | * documentation and/or other materials provided with the distribution. |
| 54 | * 3. Neither the name of the University nor the names of its contributors |
| 55 | * may be used to endorse or promote products derived from this software |
| 56 | * without specific prior written permission. |
| 57 | * |
| 58 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 59 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 60 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 61 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 62 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 63 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 64 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 65 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 66 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 67 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 68 | * SUCH DAMAGE. |
| 69 | * |
| 70 | * from: Header: disk.h,v 1.5 92/11/19 04:33:03 torek Exp (LBL) |
| 71 | * |
| 72 | * @(#)disk.h 8.2 (Berkeley) 1/9/95 |
| 73 | */ |
| 74 | |
| 75 | #ifndef _SYS_DISK_H_ |
| 76 | #define _SYS_DISK_H_ |
| 77 | |
| 78 | /* |
| 79 | * Disk device structures. |
| 80 | */ |
| 81 | |
| 82 | #ifdef _KERNEL |
| 83 | #include <sys/device.h> |
| 84 | #endif |
| 85 | #include <sys/dkio.h> |
| 86 | #include <sys/time.h> |
| 87 | #include <sys/queue.h> |
| 88 | #include <sys/mutex.h> |
| 89 | #include <sys/iostat.h> |
| 90 | |
| 91 | #include <prop/proplib.h> |
| 92 | |
| 93 | struct buf; |
| 94 | struct disk; |
| 95 | struct disklabel; |
| 96 | struct cpu_disklabel; |
| 97 | struct lwp; |
| 98 | struct vnode; |
| 99 | |
| 100 | /* |
| 101 | * Disk information dictionary. |
| 102 | * |
| 103 | * This contains general infomation for disk devices. |
| 104 | * |
| 105 | * <dict> |
| 106 | * <key>type</key> |
| 107 | * <string>...</string> |
| 108 | * <key>geometry</key> |
| 109 | * <dict> |
| 110 | * <!-- See below for disk geometry dictionary |
| 111 | * contents. --> |
| 112 | * </dict> |
| 113 | * |
| 114 | * <!-- optional information --> |
| 115 | * <key>rpm</key> |
| 116 | * <integer>...</integer> |
| 117 | * <key>sector-interleave</key> |
| 118 | * <integer>...</integer> |
| 119 | * <key>track-skew</key> |
| 120 | * <integer>...</integer> |
| 121 | * <key>cylinder-skew</key> |
| 122 | * <integer>...</integer> |
| 123 | * <key>head-switch-usecs</key> |
| 124 | * <integer>...</integer> |
| 125 | * <key>track-seek-usecs</key> |
| 126 | * <integer>...</integer> |
| 127 | * <key>removable</key> |
| 128 | * <false/> |
| 129 | * <key>ecc</key> |
| 130 | * <false/> |
| 131 | * <key>bad-sector-forwarding</key> |
| 132 | * <true/> |
| 133 | * <key>ramdisk</key> |
| 134 | * <false/> |
| 135 | * <key>back-to-back-transfers</key> |
| 136 | * <true/> |
| 137 | * |
| 138 | * <!-- additional information for SMD drives --> |
| 139 | * <key>smd-skip-sectoring</key> |
| 140 | * <false/> |
| 141 | * <!-- XXX better names for these properties --> |
| 142 | * <key>smd-mindist</key> |
| 143 | * <integer>...</integer> |
| 144 | * <key>smd-maxdist</key> |
| 145 | * <integer>...</integer> |
| 146 | * <key>smd-sdist</key> |
| 147 | * <integer>...</integer> |
| 148 | * |
| 149 | * <!-- additional information for ST506 drives --> |
| 150 | * <!-- XXX better names for these properties --> |
| 151 | * <key>st506-precompcyl</key> |
| 152 | * <integer>...</integer> |
| 153 | * <key>st506-gap3</key> |
| 154 | * <integer>...</integer> |
| 155 | * |
| 156 | * <!-- additional information for ATA drives --> |
| 157 | * <!-- XXX --> |
| 158 | * |
| 159 | * <!-- additional information for SCSI drives --> |
| 160 | * <!-- XXX --> |
| 161 | * </dict> |
| 162 | */ |
| 163 | |
| 164 | /* |
| 165 | * dkwedge_info: |
| 166 | * |
| 167 | * Information needed to configure (or query configuration of) a |
| 168 | * disk wedge. |
| 169 | */ |
| 170 | struct dkwedge_info { |
| 171 | char dkw_devname[16];/* device-style name (e.g. "dk0") */ |
| 172 | uint8_t dkw_wname[128]; /* wedge name (Unicode, UTF-8) */ |
| 173 | char dkw_parent[16]; /* parent disk device name */ |
| 174 | daddr_t dkw_offset; /* LBA offset of wedge in parent */ |
| 175 | uint64_t dkw_size; /* size of wedge in blocks */ |
| 176 | char dkw_ptype[32]; /* partition type string */ |
| 177 | }; |
| 178 | |
| 179 | /* |
| 180 | * dkwedge_list: |
| 181 | * |
| 182 | * Structure used to query a list of wedges. |
| 183 | */ |
| 184 | struct dkwedge_list { |
| 185 | void *dkwl_buf; /* storage for dkwedge_info array */ |
| 186 | size_t dkwl_bufsize; /* size of that buffer */ |
| 187 | u_int dkwl_nwedges; /* total number of wedges */ |
| 188 | u_int dkwl_ncopied; /* number actually copied */ |
| 189 | }; |
| 190 | |
| 191 | #ifdef _KERNEL |
| 192 | /* |
| 193 | * dkwedge_discovery_method: |
| 194 | * |
| 195 | * Structure used to describe partition map parsing schemes |
| 196 | * used for wedge autodiscovery. |
| 197 | */ |
| 198 | struct dkwedge_discovery_method { |
| 199 | /* link in wedge driver's list */ |
| 200 | LIST_ENTRY(dkwedge_discovery_method) ddm_list; |
| 201 | const char *ddm_name; /* name of this method */ |
| 202 | int ddm_priority; /* search priority */ |
| 203 | int (*ddm_discover)(struct disk *, struct vnode *); |
| 204 | }; |
| 205 | |
| 206 | #define DKWEDGE_DISCOVERY_METHOD_DECL(name, prio, discover) \ |
| 207 | static struct dkwedge_discovery_method name ## _ddm = { \ |
| 208 | { NULL, NULL }, \ |
| 209 | #name, \ |
| 210 | prio, \ |
| 211 | discover \ |
| 212 | }; \ |
| 213 | __link_set_add_data(dkwedge_methods, name ## _ddm) |
| 214 | #endif /* _KERNEL */ |
| 215 | |
| 216 | /* Some common partition types */ |
| 217 | #define DKW_PTYPE_UNKNOWN "" |
| 218 | #define DKW_PTYPE_UNUSED "unused" |
| 219 | #define DKW_PTYPE_SWAP "swap" |
| 220 | #define DKW_PTYPE_V6 "v6" |
| 221 | #define DKW_PTYPE_V7 "v7" |
| 222 | #define DKW_PTYPE_SYSV "sysv" |
| 223 | #define DKW_PTYPE_V71K "v71k" |
| 224 | #define DKW_PTYPE_V8 "v8" |
| 225 | #define DKW_PTYPE_FFS "ffs" |
| 226 | #define DKW_PTYPE_FAT "msdos" |
| 227 | #define DKW_PTYPE_LFS "lfs" |
| 228 | #define DKW_PTYPE_OTHER "other" |
| 229 | #define DKW_PTYPE_HPFS "hpfs" |
| 230 | #define DKW_PTYPE_ISO9660 "cd9660" |
| 231 | #define DKW_PTYPE_BOOT "boot" |
| 232 | #define DKW_PTYPE_AMIGADOS "ados" |
| 233 | #define DKW_PTYPE_HFS "hfs" |
| 234 | #define DKW_PTYPE_FILECORE "filecore" |
| 235 | #define DKW_PTYPE_EXT2FS "ext2fs" |
| 236 | #define DKW_PTYPE_NTFS "ntfs" |
| 237 | #define DKW_PTYPE_RAIDFRAME "raidframe" |
| 238 | #define DKW_PTYPE_CCD "ccd" |
| 239 | #define DKW_PTYPE_JFS2 "jfs2" |
| 240 | #define DKW_PTYPE_APPLEUFS "appleufs" |
| 241 | #define DKW_PTYPE_VINUM "vinum" |
| 242 | #define DKW_PTYPE_UDF "udf" |
| 243 | #define DKW_PTYPE_APPLEHFS "hfs" |
| 244 | #define DKW_PTYPE_SYSVBFS "sysvbfs" |
| 245 | #define DKW_PTYPE_EFS "efs" |
| 246 | #define DKW_PTYPE_NILFS "nilfs" |
| 247 | #define DKW_PTYPE_CGD "cgd" |
| 248 | #define DKW_PTYPE_MINIXFS3 "minixfs3" |
| 249 | |
| 250 | /* |
| 251 | * Ensure each symbol used in FSTYPE_DEFN in <sys/disklabel.h> |
| 252 | * has a corresponding DKW_PTYPE_* definition. |
| 253 | */ |
| 254 | #define DKW_PTYPE_MSDOS DKW_PTYPE_FAT |
| 255 | #define DKW_PTYPE_BSDFFS DKW_PTYPE_FFS |
| 256 | #define DKW_PTYPE_BSDLFS DKW_PTYPE_LFS |
| 257 | #define DKW_PTYPE_ADOS DKW_PTYPE_AMIGADOS |
| 258 | #define DKW_PTYPE_EX2FS DKW_PTYPE_EXT2FS |
| 259 | #define DKW_PTYPE_RAID DKW_PTYPE_RAIDFRAME |
| 260 | |
| 261 | /* |
| 262 | * Disk geometry dictionary. |
| 263 | * |
| 264 | * NOTE: Not all geometry information is relevant for every kind of disk. |
| 265 | * |
| 266 | * <dict> |
| 267 | * <key>sectors-per-unit</key> |
| 268 | * <integer>...</integer> |
| 269 | * <key>sector-size</key> |
| 270 | * <integer>...</integer> |
| 271 | * <key>sectors-per-track</key> |
| 272 | * <integer>...</integer> |
| 273 | * <key>tracks-per-cylinder</key> |
| 274 | * <integer>...</integer> |
| 275 | * <key>cylinders-per-unit</key> |
| 276 | * <integer>...</integer> |
| 277 | * <key>physical-cylinders-per-unit</key> |
| 278 | * <integer>...</integer> |
| 279 | * <key>spare-sectors-per-track</key> |
| 280 | * <integer>...</integer> |
| 281 | * <key>spare-sectors-per-cylinder</key> |
| 282 | * <integer>...</integer> |
| 283 | * <key>alternative-cylinders</key> |
| 284 | * <integer>...</integer> |
| 285 | * </dict> |
| 286 | * NOTE: Not all geometry information is relevant for every kind of disk. |
| 287 | */ |
| 288 | |
| 289 | struct disk_geom { |
| 290 | int64_t dg_secperunit; /* # of data sectors per unit */ |
| 291 | uint32_t dg_secsize; /* # of bytes per sector */ |
| 292 | uint32_t dg_nsectors; /* # of data sectors per track */ |
| 293 | uint32_t dg_ntracks; /* # of tracks per cylinder */ |
| 294 | uint32_t dg_ncylinders; /* # of data cylinders per unit */ |
| 295 | uint32_t dg_secpercyl; /* # of data sectors per cylinder */ |
| 296 | uint32_t dg_pcylinders; /* # of physical cylinders per unit */ |
| 297 | |
| 298 | /* |
| 299 | * Spares (bad sector replacements) below are not counted in |
| 300 | * dg_nsectors or dg_secpercyl. Spare sectors are assumed to |
| 301 | * be physical sectors which occupy space at the end of each |
| 302 | * track and/or cylinder. |
| 303 | */ |
| 304 | uint32_t dg_sparespertrack; |
| 305 | uint32_t dg_sparespercyl; |
| 306 | /* |
| 307 | * Alternative cylinders include maintenance, replacement, |
| 308 | * configuration description areas, etc. |
| 309 | */ |
| 310 | uint32_t dg_acylinders; |
| 311 | }; |
| 312 | |
| 313 | /* |
| 314 | * Disk partition dictionary. |
| 315 | * |
| 316 | * A partition is represented as a dictionary containing generic partition |
| 317 | * properties (such as starting block and block count), as well as information |
| 318 | * that is specific to individual partition map formats. |
| 319 | * |
| 320 | * <dict> |
| 321 | * <key>start-block</key> |
| 322 | * <integer>...</integer> |
| 323 | * <key>block-count</key> |
| 324 | * <integer>...</integer> |
| 325 | * <!-- DKW_PTYPE strings ("" or missing if unknown) --> |
| 326 | * <key>type</type> |
| 327 | * <string>...</string> |
| 328 | * <!-- optional --> |
| 329 | * <key>name</key> |
| 330 | * <string>...</string> |
| 331 | * |
| 332 | * <!-- these are valid for GPT partition maps --> |
| 333 | * <key>gpt-type-guid</key> |
| 334 | * <string>...</string> |
| 335 | * <key>gpt-partition-guid</key> |
| 336 | * <string>...</string> |
| 337 | * <key>gpt-platform-required</key> |
| 338 | * <false/> |
| 339 | * |
| 340 | * <!-- these are valid for 4.4BSD partition maps --> |
| 341 | * <key>bsd44-partition-type</key> |
| 342 | * <integer>...</integer> |
| 343 | * <key>bsd44-fs-fragment-size</key> |
| 344 | * <integer>...</integer> |
| 345 | * <key>bsd44-iso9660-session-offset</key> |
| 346 | * <integer>...</integer> |
| 347 | * <key>bsd44-ffs-cylinders-per-group</key> |
| 348 | * <integer>...</integer> |
| 349 | * <key>bsd44-lfs-segment-shift</key> |
| 350 | * <integer>...</integer> |
| 351 | * |
| 352 | * <!-- these are valid for NeXT partition maps --> |
| 353 | * <key>next-block-size</key> |
| 354 | * <integer>...</integer> |
| 355 | * <key>next-fs-fragment-size</key> |
| 356 | * <integer>...</integer> |
| 357 | * <key>next-fs-optimization</key> |
| 358 | * <string>...</string> <!-- "space" or "time" --> |
| 359 | * <key>next-fs-cylinders-per-group</key> |
| 360 | * <integer>...</integer> |
| 361 | * <key>next-bytes-per-inode-density</key> |
| 362 | * <integer>...</integer> |
| 363 | * <key>next-minfree-percentage</key> |
| 364 | * <integer>...</integer> |
| 365 | * <key>next-run-newfs-during-init</key> |
| 366 | * <false/> |
| 367 | * <key>next-mount-point</key> |
| 368 | * <string>...</string> |
| 369 | * <key>next-automount</key> |
| 370 | * <true/> |
| 371 | * <key>next-partition-type</key> |
| 372 | * <string>...</string> |
| 373 | * |
| 374 | * <!-- these are valid for MBR partition maps --> |
| 375 | * <key>mbr-start-head</key> |
| 376 | * <integer>...</integer> |
| 377 | * <key>mbr-start-sector</key> |
| 378 | * <integer>...</integer> |
| 379 | * <key>mbr-start-cylinder</key> |
| 380 | * <integer>...</integer> |
| 381 | * <key>mbr-partition-type</key> |
| 382 | * <integer>...</integer> |
| 383 | * <key>mbr-end-head</key> |
| 384 | * <integer>...</integer> |
| 385 | * <key>mbr-end-sector</key> |
| 386 | * <integer>...</integer> |
| 387 | * <key>mbr-end-cylinder</key> |
| 388 | * <integer>...</integer> |
| 389 | * <key>mbr-active-partition</key> |
| 390 | * <false/> |
| 391 | * |
| 392 | * <!-- these are valid for Apple partition maps --> |
| 393 | * <key>apple-partition-type</key> |
| 394 | * <string>...</string> |
| 395 | * <!-- XXX What else do we need? wrstuden? --> |
| 396 | * |
| 397 | * <!-- these are valid for RISCiX partition maps --> |
| 398 | * <key>riscix-partition-type</key> |
| 399 | * <integer>...</integer> |
| 400 | * |
| 401 | * <!-- these are valid for MIPS/SGI partition maps --> |
| 402 | * <key>mips-partition-type</key> |
| 403 | * <integer>...</integer> |
| 404 | * |
| 405 | * <!-- SunOS 4 partition maps have no specific |
| 406 | * additional information. Note, however, |
| 407 | * that SunOS 4 partitions must begin on |
| 408 | * cylinder boundaries. --> |
| 409 | * |
| 410 | * <!-- XXX Need Amiga partition map info --> |
| 411 | * |
| 412 | * <!-- these are valid for VTOC partition maps --> |
| 413 | * <key>vtoc-tag</key> |
| 414 | * <integer>...</integer> |
| 415 | * <key>vtoc-unmount</key> |
| 416 | * <false/> |
| 417 | * <key>vtoc-read-only</key> |
| 418 | * <false/> |
| 419 | * <!-- XXX is this really part of the partition info? --> |
| 420 | * <key>vtoc-timestamp</key> |
| 421 | * <integer>...</integer> |
| 422 | * |
| 423 | * <!-- mvme68k partition maps use 4.4BSD partition |
| 424 | * info stuffed into two different areas of the |
| 425 | * disk information label recognized by BUG. --> |
| 426 | * |
| 427 | * <!-- XXX What else? --> |
| 428 | * </dict> |
| 429 | */ |
| 430 | |
| 431 | struct disk { |
| 432 | TAILQ_ENTRY(disk) dk_link; /* link in global disklist */ |
| 433 | const char *dk_name; /* disk name */ |
| 434 | prop_dictionary_t dk_info; /* reference to disk-info dictionary */ |
| 435 | struct disk_geom dk_geom; /* cooked version of dk_info */ |
| 436 | int dk_bopenmask; /* block devices open */ |
| 437 | int dk_copenmask; /* character devices open */ |
| 438 | int dk_openmask; /* composite (bopen|copen) */ |
| 439 | int dk_state; /* label state ### */ |
| 440 | int dk_blkshift; /* shift to convert DEV_BSIZE to blks */ |
| 441 | int dk_byteshift; /* shift to convert bytes to blks */ |
| 442 | |
| 443 | /* |
| 444 | * Metrics data; note that some metrics may have no meaning |
| 445 | * on certain types of disks. |
| 446 | */ |
| 447 | struct io_stats *dk_stats; |
| 448 | |
| 449 | const struct dkdriver *dk_driver; /* pointer to driver */ |
| 450 | |
| 451 | /* |
| 452 | * Information required to be the parent of a disk wedge. |
| 453 | */ |
| 454 | kmutex_t dk_rawlock; /* lock on these fields */ |
| 455 | u_int dk_rawopens; /* # of openes of rawvp */ |
| 456 | struct vnode *dk_rawvp; /* vnode for the RAW_PART bdev */ |
| 457 | |
| 458 | kmutex_t dk_openlock; /* lock on these and openmask */ |
| 459 | u_int dk_nwedges; /* # of configured wedges */ |
| 460 | /* all wedges on this disk */ |
| 461 | LIST_HEAD(, dkwedge_softc) dk_wedges; |
| 462 | |
| 463 | /* |
| 464 | * Disk label information. Storage for the in-core disk label |
| 465 | * must be dynamically allocated, otherwise the size of this |
| 466 | * structure becomes machine-dependent. |
| 467 | */ |
| 468 | daddr_t dk_labelsector; /* sector containing label */ |
| 469 | struct disklabel *dk_label; /* label */ |
| 470 | struct cpu_disklabel *dk_cpulabel; |
| 471 | }; |
| 472 | |
| 473 | #ifdef _KERNEL |
| 474 | struct dkdriver { |
| 475 | void (*d_strategy)(struct buf *); |
| 476 | void (*d_minphys)(struct buf *); |
| 477 | int (*d_open)(dev_t, int, int, struct lwp *); |
| 478 | int (*d_close)(dev_t, int, int, struct lwp *); |
| 479 | int (*d_diskstart)(device_t, struct buf *); |
| 480 | void (*d_iosize)(device_t, int *); |
| 481 | int (*d_dumpblocks)(device_t, void *, daddr_t, int); |
| 482 | int (*d_lastclose)(device_t); |
| 483 | int (*d_discard)(device_t, off_t, off_t); |
| 484 | }; |
| 485 | #endif |
| 486 | |
| 487 | /* states */ |
| 488 | #define DK_CLOSED 0 /* drive is closed */ |
| 489 | #define DK_WANTOPEN 1 /* drive being opened */ |
| 490 | #define DK_WANTOPENRAW 2 /* drive being opened */ |
| 491 | #define DK_RDLABEL 3 /* label being read */ |
| 492 | #define DK_OPEN 4 /* label read, drive open */ |
| 493 | #define DK_OPENRAW 5 /* open without label */ |
| 494 | |
| 495 | /* |
| 496 | * Bad sector lists per fixed disk |
| 497 | */ |
| 498 | struct disk_badsectors { |
| 499 | SLIST_ENTRY(disk_badsectors) dbs_next; |
| 500 | daddr_t dbs_min; /* min. sector number */ |
| 501 | daddr_t dbs_max; /* max. sector number */ |
| 502 | struct timeval dbs_failedat; /* first failure at */ |
| 503 | }; |
| 504 | |
| 505 | struct disk_badsecinfo { |
| 506 | uint32_t dbsi_bufsize; /* size of region pointed to */ |
| 507 | uint32_t dbsi_skip; /* how many to skip past */ |
| 508 | uint32_t dbsi_copied; /* how many got copied back */ |
| 509 | uint32_t dbsi_left; /* remaining to copy */ |
| 510 | void * dbsi_buffer; /* region to copy disk_badsectors to */ |
| 511 | }; |
| 512 | |
| 513 | #define DK_STRATEGYNAMELEN 32 |
| 514 | struct disk_strategy { |
| 515 | char dks_name[DK_STRATEGYNAMELEN]; /* name of strategy */ |
| 516 | char *dks_param; /* notyet; should be NULL */ |
| 517 | size_t dks_paramlen; /* notyet; should be 0 */ |
| 518 | }; |
| 519 | |
| 520 | #define DK_BSIZE2BLKSHIFT(b) ((ffs((b) / DEV_BSIZE)) - 1) |
| 521 | #define DK_BSIZE2BYTESHIFT(b) (ffs((b)) - 1) |
| 522 | #define DK_DEV_BSIZE_OK(b) \ |
| 523 | ((b) >= DEV_BSIZE && ((b) & ((b) - 1)) == 0 && (b) <= MAXPHYS) |
| 524 | |
| 525 | #ifdef _KERNEL |
| 526 | extern int disk_count; /* number of disks in global disklist */ |
| 527 | |
| 528 | struct proc; |
| 529 | |
| 530 | void disk_attach(struct disk *); |
| 531 | int disk_begindetach(struct disk *, int (*)(device_t), device_t, int); |
| 532 | void disk_detach(struct disk *); |
| 533 | void disk_init(struct disk *, const char *, const struct dkdriver *); |
| 534 | void disk_destroy(struct disk *); |
| 535 | void disk_busy(struct disk *); |
| 536 | void disk_unbusy(struct disk *, long, int); |
| 537 | bool disk_isbusy(struct disk *); |
| 538 | struct disk *disk_find(const char *); |
| 539 | int disk_ioctl(struct disk *, dev_t, u_long, void *, int, struct lwp *); |
| 540 | void disk_set_info(device_t, struct disk *, const char *); |
| 541 | |
| 542 | void dkwedge_init(void); |
| 543 | int dkwedge_add(struct dkwedge_info *); |
| 544 | int dkwedge_del(struct dkwedge_info *); |
| 545 | void dkwedge_delall(struct disk *); |
| 546 | int dkwedge_list(struct disk *, struct dkwedge_list *, struct lwp *); |
| 547 | void dkwedge_discover(struct disk *); |
| 548 | int dkwedge_read(struct disk *, struct vnode *, daddr_t, void *, size_t); |
| 549 | device_t dkwedge_find_by_wname(const char *); |
| 550 | device_t dkwedge_find_by_parent(const char *, size_t *); |
| 551 | const char *dkwedge_get_parent_name(dev_t); |
| 552 | void dkwedge_print_wnames(void); |
| 553 | device_t dkwedge_find_partition(device_t, daddr_t, uint64_t); |
| 554 | |
| 555 | #endif |
| 556 | |
| 557 | #endif /* _SYS_DISK_H_ */ |
| 558 | |