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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1990-2002 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_DKLABEL_H
#define _SYS_DKLABEL_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/isa_defs.h>
#include <sys/types32.h>
#include <sys/isa_defs.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Miscellaneous defines
*/
#define DKL_MAGIC 0xDABE /* magic number */
#define FKL_MAGIC 0xff /* magic number for DOS floppies */
#if defined(_SUNOS_VTOC_16)
#define NDKMAP 16 /* # of logical partitions */
#define DK_LABEL_LOC 1 /* location of disk label */
#elif defined(_SUNOS_VTOC_8)
#define NDKMAP 8 /* # of logical partitions */
#define DK_LABEL_LOC 0 /* location of disk label */
#else
#error "No VTOC format defined."
#endif
#define LEN_DKL_ASCII 128 /* length of dkl_asciilabel */
#define LEN_DKL_VVOL 8 /* length of v_volume */
#define DK_LABEL_SIZE 512 /* size of disk label */
#define DK_MAX_BLOCKS 0x7fffffff /* max # of blocks handled */
/*
* Reserve two cylinders on SCSI disks.
* One is for the backup disk label and the other is for the deviceid.
*
* IPI disks only reserve one cylinder, but they will go away soon.
* CDROMs do not reserve any cylinders.
*/
#define DK_ACYL 2
/*
* Format of a Sun disk label.
* Resides in cylinder 0, head 0, sector 0.
*
* sizeof (struct dk_label) should be 512 (the current sector size),
* but should the sector size increase, this structure should remain
* at the beginning of the sector.
*/
/*
* partition headers: section 1
* Returned in struct dk_allmap by ioctl DKIOC[SG]APART (dkio(7I))
*/
struct dk_map {
daddr_t dkl_cylno; /* starting cylinder */
daddr_t dkl_nblk; /* number of blocks; if == 0, */
/* partition is undefined */
};
/*
* partition headers: section 1
* Fixed size for on-disk dk_label
*/
struct dk_map32 {
daddr32_t dkl_cylno; /* starting cylinder */
daddr32_t dkl_nblk; /* number of blocks; if == 0, */
/* partition is undefined */
};
/*
* partition headers: section 2,
* brought over from AT&T SVr4 vtoc structure.
*/
struct dk_map2 {
uint16_t p_tag; /* ID tag of partition */
uint16_t p_flag; /* permission flag */
};
struct dkl_partition {
uint16_t p_tag; /* ID tag of partition */
uint16_t p_flag; /* permision flags */
daddr32_t p_start; /* start sector no of partition */
int32_t p_size; /* # of blocks in partition */
};
/*
* VTOC inclusions from AT&T SVr4
* Fixed sized types for on-disk VTOC
*/
struct dk_vtoc {
#if defined(_SUNOS_VTOC_16)
uint32_t v_bootinfo[3]; /* info for mboot (unsupported) */
uint32_t v_sanity; /* to verify vtoc sanity */
uint32_t v_version; /* layout version */
char v_volume[LEN_DKL_VVOL]; /* volume name */
uint16_t v_sectorsz; /* sector size in bytes */
uint16_t v_nparts; /* number of partitions */
uint32_t v_reserved[10]; /* free space */
struct dkl_partition v_part[NDKMAP]; /* partition headers */
time32_t timestamp[NDKMAP]; /* partition timestamp (unsupported) */
char v_asciilabel[LEN_DKL_ASCII]; /* for compatibility */
#elif defined(_SUNOS_VTOC_8)
uint32_t v_version; /* layout version */
char v_volume[LEN_DKL_VVOL]; /* volume name */
uint16_t v_nparts; /* number of partitions */
struct dk_map2 v_part[NDKMAP]; /* partition hdrs, sec 2 */
uint32_t v_bootinfo[3]; /* info needed by mboot */
uint32_t v_sanity; /* to verify vtoc sanity */
uint32_t v_reserved[10]; /* free space */
time32_t v_timestamp[NDKMAP]; /* partition timestamp */
#else
#error "No VTOC format defined."
#endif
};
/*
* define the amount of disk label padding needed to make
* the entire structure occupy 512 bytes.
*/
#if defined(_SUNOS_VTOC_16)
#define LEN_DKL_PAD (DK_LABEL_SIZE - \
((sizeof (struct dk_vtoc) + \
(4 * sizeof (uint32_t)) + \
(12 * sizeof (uint16_t)) + \
(2 * (sizeof (uint16_t))))))
#elif defined(_SUNOS_VTOC_8)
#define LEN_DKL_PAD (DK_LABEL_SIZE \
- ((LEN_DKL_ASCII) + \
(sizeof (struct dk_vtoc)) + \
(sizeof (struct dk_map32) * NDKMAP) + \
(14 * (sizeof (uint16_t))) + \
(2 * (sizeof (uint16_t)))))
#else
#error "No VTOC format defined."
#endif
struct dk_label {
#if defined(_SUNOS_VTOC_16)
struct dk_vtoc dkl_vtoc; /* vtoc inclusions from AT&T SVr4 */
uint32_t dkl_pcyl; /* # of physical cylinders */
uint32_t dkl_ncyl; /* # of data cylinders */
uint16_t dkl_acyl; /* # of alternate cylinders */
uint16_t dkl_bcyl; /* cyl offset (for fixed head area) */
uint32_t dkl_nhead; /* # of heads */
uint32_t dkl_nsect; /* # of data sectors per track */
uint16_t dkl_intrlv; /* interleave factor */
uint16_t dkl_skew; /* skew factor */
uint16_t dkl_apc; /* alternates per cyl (SCSI only) */
uint16_t dkl_rpm; /* revolutions per minute */
uint16_t dkl_write_reinstruct; /* # sectors to skip, writes */
uint16_t dkl_read_reinstruct; /* # sectors to skip, reads */
uint16_t dkl_extra[4]; /* for compatible expansion */
char dkl_pad[LEN_DKL_PAD]; /* unused part of 512 bytes */
#elif defined(_SUNOS_VTOC_8)
char dkl_asciilabel[LEN_DKL_ASCII]; /* for compatibility */
struct dk_vtoc dkl_vtoc; /* vtoc inclusions from AT&T SVr4 */
uint16_t dkl_write_reinstruct; /* # sectors to skip, writes */
uint16_t dkl_read_reinstruct; /* # sectors to skip, reads */
char dkl_pad[LEN_DKL_PAD]; /* unused part of 512 bytes */
uint16_t dkl_rpm; /* rotations per minute */
uint16_t dkl_pcyl; /* # physical cylinders */
uint16_t dkl_apc; /* alternates per cylinder */
uint16_t dkl_obs1; /* obsolete */
uint16_t dkl_obs2; /* obsolete */
uint16_t dkl_intrlv; /* interleave factor */
uint16_t dkl_ncyl; /* # of data cylinders */
uint16_t dkl_acyl; /* # of alternate cylinders */
uint16_t dkl_nhead; /* # of heads in this partition */
uint16_t dkl_nsect; /* # of 512 byte sectors per track */
uint16_t dkl_obs3; /* obsolete */
uint16_t dkl_obs4; /* obsolete */
struct dk_map32 dkl_map[NDKMAP]; /* logical partition headers */
#else
#error "No VTOC format defined."
#endif
uint16_t dkl_magic; /* identifies this label format */
uint16_t dkl_cksum; /* xor checksum of sector */
};
#if defined(_SUNOS_VTOC_16)
#define dkl_asciilabel dkl_vtoc.v_asciilabel
#define v_timestamp timestamp
#elif defined(_SUNOS_VTOC_8)
/*
* These defines are for historic compatibility with old drivers.
*/
#define dkl_gap1 dkl_obs1 /* used to be gap1 */
#define dkl_gap2 dkl_obs2 /* used to be gap2 */
#define dkl_bhead dkl_obs3 /* used to be label head offset */
#define dkl_ppart dkl_obs4 /* used to by physical partition */
#else
#error "No VTOC format defined."
#endif
struct fk_label { /* DOS floppy label */
uchar_t fkl_type;
uchar_t fkl_magich;
uchar_t fkl_magicl;
uchar_t filler;
};
/*
* Layout of stored fabricated device id (on-disk)
*/
#define DK_DEVID_BLKSIZE (512)
#define DK_DEVID_SIZE (DK_DEVID_BLKSIZE - ((sizeof (uchar_t) * 7)))
#define DK_DEVID_REV_MSB (0)
#define DK_DEVID_REV_LSB (1)
struct dk_devid {
uchar_t dkd_rev_hi; /* revision (MSB) */
uchar_t dkd_rev_lo; /* revision (LSB) */
uchar_t dkd_flags; /* flags (not used yet) */
uchar_t dkd_devid[DK_DEVID_SIZE]; /* devid stored here */
uchar_t dkd_checksum3; /* checksum (MSB) */
uchar_t dkd_checksum2;
uchar_t dkd_checksum1;
uchar_t dkd_checksum0; /* checksum (LSB) */
};
#define DKD_GETCHKSUM(dkd) ((dkd)->dkd_checksum3 << 24) + \
((dkd)->dkd_checksum2 << 16) + \
((dkd)->dkd_checksum1 << 8) + \
((dkd)->dkd_checksum0)
#define DKD_FORMCHKSUM(c, dkd) (dkd)->dkd_checksum3 = hibyte(hiword((c))); \
(dkd)->dkd_checksum2 = lobyte(hiword((c))); \
(dkd)->dkd_checksum1 = hibyte(loword((c))); \
(dkd)->dkd_checksum0 = lobyte(loword((c)));
#ifdef __cplusplus
}
#endif
#endif /* _SYS_DKLABEL_H */
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