| 1 | ; Project name : XTIDE Universal BIOS
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| 2 | ; Description : Equates used in Enhanced INT 13h functions (EBIOS).
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| 3 |
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| 4 | ;
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| 5 | ; XTIDE Universal BIOS and Associated Tools
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| 6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
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| 7 | ;
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| 8 | ; This program is free software; you can redistribute it and/or modify
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| 9 | ; it under the terms of the GNU General Public License as published by
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| 10 | ; the Free Software Foundation; either version 2 of the License, or
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| 11 | ; (at your option) any later version.
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| 12 | ;
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| 13 | ; This program is distributed in the hope that it will be useful,
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| 14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | ; GNU General Public License for more details.
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| 17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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| 18 | ;
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| 19 |
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| 20 | %ifndef EBIOS_INC
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| 21 | %define EBIOS_INC
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| 22 |
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| 23 | ; EBIOS specification returned by INT 13h, AH=41h
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| 24 |
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| 25 | EDD_V1_1 EQU 21h ; 21h = EDD version 1.1
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| 26 | EBIOS_VERSION EQU EDD_V1_1
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| 27 |
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| 28 | ; Support bits returned by INT 13h, AH=41h
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| 29 | ENHANCED_DRIVE_ACCESS_SUPPORT EQU (1<<0) ; 41h, 42h, 43h 44h, 47h and 48h are available
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| 30 | DRIVE_LOCKING_AND_EJECTING_SUPPORT EQU (1<<1) ; 41h, 45h, 46h, 48h, 49h are available and INT 15h, AH=52h
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| 31 | ENHANCED_DISK_DRIVE_SUPPORT EQU (1<<2) ; 41h, 48h, 4Eh are available (EDD)
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| 32 |
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| 33 |
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| 34 | ; Extended Drive Information returned by AH=48h
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| 35 | struc EDRIVE_INFO
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| 36 | .wSize resb 2 ; 0, Size of this buffer, at least 26
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| 37 | .wFlags resb 2 ; 2, Information flags
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| 38 | .dwCylinders resb 4 ; 4, Total number of addressable cylinders
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| 39 | .dwHeads resb 4 ; 8, Total number of addressable heads
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| 40 | .dwSectorsPerTrack resb 4 ; 12, Number of sectors per track
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| 41 | .qwTotalSectors resb 8 ; 16, Total number of addressable sectors
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| 42 | .wSectorSize resb 2 ; 24, Number of bytes per sector
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| 43 | .fpDPTE resb 4 ; 26, Optional pointer to Device Parameter Table Extension
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| 44 | endstruc
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| 45 |
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| 46 | MINIMUM_EDRIVEINFO_SIZE EQU 26 ; 26 bytes does not include EDD pointer
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| 47 | EDRIVEINFO_SIZE_WITH_DPTE EQU EDRIVE_INFO_size
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| 48 |
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| 49 | ; Flags for EDRIVE_INFO.wFlags
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| 50 | FLG_DMA_BOUNDARY_ERRORS_HANDLED_BY_BIOS EQU (1<<0)
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| 51 | FLG_CHS_INFORMATION_IS_VALID EQU (1<<1)
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| 52 | FLG_REMOVABLE_DRIVE EQU (1<<2)
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| 53 | FLG_WRITE_WITH_VERIFY_SUPPORTED EQU (1<<3)
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| 54 | FLG_CHANGE_LINE_SUPPORT EQU (1<<4) ; Removable media only
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| 55 | FLG_LOCKABLE EQU (1<<5) ; Removable media only
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| 56 | FLG_NO_MEDIA_PRESENT_AND_CHS_SET_TO_MAX EQU (1<<6) ; Removable media only
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| 57 |
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| 58 |
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| 59 | ; Device Parameter Table Extension
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| 60 | struc DPTE
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| 61 | .wBasePort resb 2 ; 0, Command Block Base Port Address
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| 62 | .wControlBlockPort resb 2 ; 2, Control Block Base Port Address
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| 63 | .bDrvnhead resb 1 ; 4, Drive and Head Select Register upper nibble
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| 64 | .bBiosVendor resb 1 ; 5, BIOS Vendor Specific
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| 65 | .bIRQ resb 1 ; 6, IRQ for this device
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| 66 | .bBlockSize resb 1 ; 7, Current block size in sectors
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| 67 | .bDmaChannelAndType resb 1 ; 8, DMA information
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| 68 | .bPioMode resb 1 ; 9, PIO mode
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| 69 | .wFlags resb 2 ; 10, BIOS selected hardware specific option flags
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| 70 | .wReserved resb 2 ; 12, Reserved. Must be zero.
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| 71 | .bRevision resb 1 ; 14, Revision level of this table (11h)
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| 72 | .bChecksum resb 1 ; 15, Checksum, 2's complement of the sum of bytes 0-14
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| 73 | endstruc
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| 74 |
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| 75 | ; Flags for DPTE.wFlags
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| 76 | FLG_FAST_PIO_ENABLED EQU (1<<0) ; Set is using PIO mode 1 or above (DPTE.bPioMode is valid when set)
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| 77 | FLG_DMA_ENABLED EQU (1<<1) ; Set if DMA enabled (DPTE.bDmaChannelAndType is valid when set)
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| 78 | FLG_BLOCK_MODE_ENABLED EQU (1<<2) ; Set if Block Mode transfers are enabled (DPTE.bBlockSize is valid when set)
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| 79 | FLG_CHS_TRANSLATION_ENABLED EQU (1<<3) ; Set for drives with more than 1024 cylinders
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| 80 | FLG_LBA_TRANSLATION_ENABLED EQU (1<<4) ; Set when LBA addersses from DAP are passed directly to the drive
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| 81 | FLG_REMOVABLE_MEDIA EQU (1<<5)
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| 82 | FLG_ATAPI_DEVICE EQU (1<<6)
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| 83 | FLG_32BIT_XFER_MODE EQU (1<<7) ; Set when using 32-bit data transfers
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| 84 | FLG_ATAPI_USES_IRQ EQU (1<<8) ; ATAPI Device uses IRQ for data transfers
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| 85 | ; L-CHS translation type for old INT 13h (when FLG_CHS_TRANSLATION_ENABLED is set)
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| 86 | MASK_CHS_TRANSLATION_TYPE EQU (3<<TRANSLATION_TYPE_FIELD_POSITION)
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| 87 | TRANSLATION_TYPE_FIELD_POSITION EQU 9
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| 88 | BIT_SHIFT_TRANSLATION EQU 0 ; LARGE
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| 89 | LBA_ASSISTED_TRANSLATION EQU 1 ; Assisted LBA
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| 90 | ; 2 = reserved
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| 91 | VENDOR_SPECIFIC_TRANSLATION EQU 3
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| 92 |
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| 93 |
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| 94 | DPTE_REVISION EQU 11h
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| 95 |
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| 96 |
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| 97 | ; Disk Address Packet for read, write and verify functions
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| 98 | struc DAP
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| 99 | .bSize resb 1 ; 0, Size of this packet in bytes
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| 100 | .bReservedAt1 resb 1 ; 1, Currently unused, must be zero
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| 101 | .wSectorCount resb 2 ; 2, Number of sectors to process (0...127)
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| 102 | .dwMemoryAddress:
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| 103 | .wOffset resb 2 ; 4, Memory offset for transfer
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| 104 | .wSegment resb 2 ; 6, Memory segment for transfer
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| 105 | .qwLBA resb 8 ; 8, Starting sector for transfer
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| 106 | endstruc
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| 107 |
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| 108 | MINIMUM_DAP_SIZE EQU 16
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| 109 |
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| 110 |
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| 111 | %endif ; EBIOS_INC
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