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Autodocs Include classes clib datatypes devices audio.h / .i bootblock.h / .i cd.h / .i clipboard.h / .i console.h / .i conunit.h / .i gameport.h / .i hardblocks.h / .i input.h / .i inputevent.h / .i keyboard.h / .i keymap.h / .i narrator.h / .i parallel.h / .i printer.h / .i prtbase.h / .i prtgfx.h / .i scsidisk.h / .i serial.h / .i timer.h / .i trackdisk.h / .i diskfont dos exec gadgets graphics hardware images intuition libraries pragma pragmas prefs proto reaction resources rexx utility workbench GuruMeditation | #ifndef DEVICES_HARDBLOCKS_H #define DEVICES_HARDBLOCKS_H /* ** $VER: hardblocks.h 44.2 (20.10.1999) ** Includes Release 45.1 ** ** File System identifier blocks for hard disks ** ** (C) Copyright 1988-2001 Amiga, Inc. ** (C) Copyright 1999 Joanne Dow licensed to Amiga, Inc. ** All Rights Reserved */ /* Changes ** Expanded envec ** Added storage for driveinit name up to 31 letters. ** Added storage for filesysten name up to 83 letters. **/ #ifndef EXEC_TYPES_H #include <exec/types.h> #endif /* EXEC_TYPES_H */ /*-------------------------------------------------------------------- * * This file describes blocks of data that exist on a hard disk * to describe that disk. They are not generically accessable to * the user as they do not appear on any DOS drive. The blocks * are tagged with a unique identifier, checksummed, and linked * together. The root of these blocks is the RigidDiskBlock. * * The RigidDiskBlock must exist on the disk within the first * RDB_LOCATION_LIMIT blocks. This inhibits the use of the zero * cylinder in an AmigaDOS partition: although it is strictly * possible to store the RigidDiskBlock data in the reserved * area of a partition, this practice is discouraged since the * reserved blocks of a partition are overwritten by "Format", * "Install", "DiskCopy", etc. The recommended disk layout, * then, is to use the first cylinder(s) to store all the drive * data specified by these blocks: i.e. partition descriptions, * file system load images, drive bad block maps, spare blocks, * etc. * * Though all descriptions in this file contemplate 512 blocks * per track this desecription works functionally with any block * size. The LSEG blocks should make most efficient use of the * disk block size possible, for example. While this specification * can support 256 byte sectors that is deprecated at this time. * * This version adds some modest storage spaces for inserting * the actual source filename for files installed on the RDBs * as either DriveInit code or Filesystem code. This makes * creating a mountfile suitable for use with the "C:Mount" * command that can be used for manually mounting the disk if * ever required. * *------------------------------------------------------------------*/ /* * NOTE * optional block addresses below contain $ffffffff to indicate * a NULL address, as zero is a valid address */ struct RigidDiskBlock { ULONG rdb_ID; /* 4 character identifier */ ULONG rdb_SummedLongs; /* size of this checksummed structure */ LONG rdb_ChkSum; /* block checksum (longword sum to zero) */ ULONG rdb_HostID; /* SCSI Target ID of host */ ULONG rdb_BlockBytes; /* size of disk blocks */ ULONG rdb_Flags; /* see below for defines */ /* block list heads */ ULONG rdb_BadBlockList; /* optional bad block list */ ULONG rdb_PartitionList; /* optional first partition block */ ULONG rdb_FileSysHeaderList; /* optional file system header block */ ULONG rdb_DriveInit; /* optional drive-specific init code */ /* DriveInit(lun,rdb,ior): "C" stk & d0/a0/a1 */ ULONG rdb_Reserved1[6]; /* set to $ffffffff */ /* physical drive characteristics */ ULONG rdb_Cylinders; /* number of drive cylinders */ ULONG rdb_Sectors; /* sectors per track */ ULONG rdb_Heads; /* number of drive heads */ ULONG rdb_Interleave; /* interleave */ ULONG rdb_Park; /* landing zone cylinder */ ULONG rdb_Reserved2[3]; ULONG rdb_WritePreComp; /* starting cylinder: write precompensation */ ULONG rdb_ReducedWrite; /* starting cylinder: reduced write current */ ULONG rdb_StepRate; /* drive step rate */ ULONG rdb_Reserved3[5]; /* logical drive characteristics */ ULONG rdb_RDBBlocksLo; /* low block of range reserved for hardblocks */ ULONG rdb_RDBBlocksHi; /* high block of range for these hardblocks */ ULONG rdb_LoCylinder; /* low cylinder of partitionable disk area */ ULONG rdb_HiCylinder; /* high cylinder of partitionable data area */ ULONG rdb_CylBlocks; /* number of blocks available per cylinder */ ULONG rdb_AutoParkSeconds; /* zero for no auto park */ ULONG rdb_HighRDSKBlock; /* highest block used by RDSK */ /* (not including replacement bad blocks) */ ULONG rdb_Reserved4; /* drive identification */ char rdb_DiskVendor[8]; char rdb_DiskProduct[16]; char rdb_DiskRevision[4]; char rdb_ControllerVendor[8]; char rdb_ControllerProduct[16]; char rdb_ControllerRevision[4]; char rdb_DriveInitName[40]; // jdow: Filename for driveinit source // jdow: as a terminated string. }; #define IDNAME_RIGIDDISK 0x5244534B /* 'RDSK' */ #define RDB_LOCATION_LIMIT 16 #define RDBFB_LAST 0 /* no disks exist to be configured after */ #define RDBFF_LAST 0x01L /* this one on this controller */ #define RDBFB_LASTLUN 1 /* no LUNs exist to be configured greater */ #define RDBFF_LASTLUN 0x02L /* than this one at this SCSI Target ID */ #define RDBFB_LASTTID 2 /* no Target IDs exist to be configured */ #define RDBFF_LASTTID 0x04L /* greater than this one on this SCSI bus */ #define RDBFB_NORESELECT 3 /* don't bother trying to perform reselection */ #define RDBFF_NORESELECT 0x08L /* when talking to this drive */ #define RDBFB_DISKID 4 /* rdb_Disk... identification valid */ #define RDBFF_DISKID 0x10L #define RDBFB_CTRLRID 5 /* rdb_Controller... identification valid */ #define RDBFF_CTRLRID 0x20L /* added 7/20/89 by commodore: */ #define RDBFB_SYNCH 6 /* drive supports scsi synchronous mode */ #define RDBFF_SYNCH 0x40L /* CAN BE DANGEROUS TO USE IF IT DOESN'T! */ /*------------------------------------------------------------------*/ struct BadBlockEntry { ULONG bbe_BadBlock; /* block number of bad block */ ULONG bbe_GoodBlock; /* block number of replacement block */ }; struct BadBlockBlock { ULONG bbb_ID; /* 4 character identifier */ ULONG bbb_SummedLongs; /* size of this checksummed structure */ LONG bbb_ChkSum; /* block checksum (longword sum to zero) */ ULONG bbb_HostID; /* SCSI Target ID of host */ ULONG bbb_Next; /* block number of the next BadBlockBlock */ ULONG bbb_Reserved; struct BadBlockEntry bbb_BlockPairs[61]; /* bad block entry pairs */ /* note [61] assumes 512 byte blocks */ }; #define IDNAME_BADBLOCK 0x42414442 /* 'BADB' */ /*------------------------------------------------------------------*/ struct PartitionBlock { ULONG pb_ID; /* 4 character identifier */ ULONG pb_SummedLongs; /* size of this checksummed structure */ LONG pb_ChkSum; /* block checksum (longword sum to zero) */ ULONG pb_HostID; /* SCSI Target ID of host */ ULONG pb_Next; /* block number of the next PartitionBlock */ ULONG pb_Flags; /* see below for defines */ ULONG pb_Reserved1[2]; ULONG pb_DevFlags; /* preferred flags for OpenDevice */ UBYTE pb_DriveName[32]; /* preferred DOS device name: BSTR form */ /* (not used if this name is in use) */ ULONG pb_Reserved2[15]; /* filler to 32 longwords */ ULONG pb_Environment[20]; /* environment vector for this partition */ ULONG pb_EReserved[12]; /* reserved for future environment vector */ }; #define IDNAME_PARTITION 0x50415254 /* 'PART' */ #define PBFB_BOOTABLE 0 /* this partition is intended to be bootable */ #define PBFF_BOOTABLE 1L /* (expected directories and files exist) */ #define PBFB_NOMOUNT 1 /* do not mount this partition (e.g. manually */ #define PBFF_NOMOUNT 2L /* mounted, but space reserved here) */ /*------------------------------------------------------------------*/ struct FileSysHeaderBlock { ULONG fhb_ID; /* 4 character identifier */ ULONG fhb_SummedLongs; /* size of this checksummed structure */ LONG fhb_ChkSum; /* block checksum (longword sum to zero) */ ULONG fhb_HostID; /* SCSI Target ID of host */ ULONG fhb_Next; /* block number of next FileSysHeaderBlock */ ULONG fhb_Flags; /* see below for defines */ ULONG fhb_Reserved1[2]; ULONG fhb_DosType; /* file system description: match this with */ /* partition environment's DE_DOSTYPE entry */ ULONG fhb_Version; /* release version of this code */ ULONG fhb_PatchFlags; /* bits set for those of the following that */ /* need to be substituted into a standard */ /* device node for this file system: e.g. */ /* 0x180 to substitute SegList & GlobalVec */ ULONG fhb_Type; /* device node type: zero */ ULONG fhb_Task; /* standard dos "task" field: zero */ ULONG fhb_Lock; /* not used for devices: zero */ ULONG fhb_Handler; /* filename to loadseg: zero placeholder */ ULONG fhb_StackSize; /* stacksize to use when starting task */ LONG fhb_Priority; /* task priority when starting task */ LONG fhb_Startup; /* startup msg: zero placeholder */ LONG fhb_SegListBlocks; /* first of linked list of LoadSegBlocks: */ /* note that this entry requires some */ /* processing before substitution */ LONG fhb_GlobalVec; /* BCPL global vector when starting task */ ULONG fhb_Reserved2[23]; /* (those reserved by PatchFlags) */ char fhb_FileSysName[84]; /* File system file name as loaded. */ }; #define IDNAME_FILESYSHEADER 0x46534844 /* 'FSHD' */ /*------------------------------------------------------------------*/ struct LoadSegBlock { ULONG lsb_ID; /* 4 character identifier */ ULONG lsb_SummedLongs; /* size of this checksummed structure */ LONG lsb_ChkSum; /* block checksum (longword sum to zero) */ ULONG lsb_HostID; /* SCSI Target ID of host */ ULONG lsb_Next; /* block number of the next LoadSegBlock */ ULONG lsb_LoadData[123]; /* data for "loadseg" */ /* note [123] assumes 512 byte blocks */ }; #define IDNAME_LOADSEG 0x4C534547 /* 'LSEG' */ #endif /* DEVICES_HARDBLOCKS_H */ Comments |
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