| /* |
| * 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 |
| |
| |
| |
| #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 { |
| uint64_t dkl_cylno; /* starting cylinder */ |
| uint64_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; /* permission 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 */ |