| 1 | ; Project name : XTIDE Universal BIOS
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| 2 | ; Description : Sets IDE Device specific parameters to DPT.
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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, 2011-2012 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 | ; Section containing code
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| 21 | SECTION .text
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| 22 |
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| 23 | ;--------------------------------------------------------------------
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| 24 | ; IdeDPT_Finalize
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| 25 | ; Parameters:
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| 26 | ; DS:DI: Ptr to Disk Parameter Table
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| 27 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 28 | ; CS:BP: Ptr to IDEVARS for the controller
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| 29 | ; Returns:
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| 30 | ; CF: Clear, IDE interface only supports hard disks
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| 31 | ; Corrupts registers:
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| 32 | ; AX, BX, CX, DX
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| 33 | ;--------------------------------------------------------------------
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| 34 | IdeDPT_Finalize:
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| 35 |
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| 36 | ;--------------------------------------------------------------------
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| 37 | ; .StoreBlockMode
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| 38 | ; Parameters:
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| 39 | ; DS:DI: Ptr to Disk Parameter Table
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| 40 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 41 | ; CS:BP: Ptr to IDEVARS for the controller
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| 42 | ; Returns:
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| 43 | ; Nothing
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| 44 | ; Corrupts registers:
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| 45 | ; AX
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| 46 | ;--------------------------------------------------------------------
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| 47 | .StoreBlockMode:
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| 48 | mov BYTE [di+DPT_ATA.bBlockSize], 1
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| 49 |
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| 50 | %ifdef MODULE_ADVANCED_ATA
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| 51 | ;--------------------------------------------------------------------
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| 52 | ; .StoreDeviceType
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| 53 | ; Parameters:
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| 54 | ; DS:DI: Ptr to Disk Parameter Table
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| 55 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 56 | ; CS:BP: Ptr to IDEVARS for the controller
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| 57 | ; Returns:
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| 58 | ; Nothing
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| 59 | ; Corrupts registers:
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| 60 | ; Nothing
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| 61 | ;--------------------------------------------------------------------
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| 62 | .StoreDeviceType:
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| 63 | call IdeDPT_StoreDeviceTypeFromIdevarsInCSBPtoDPTinDSDI
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| 64 |
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| 65 | ;--------------------------------------------------------------------
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| 66 | ; .StorePioModeAndTimings
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| 67 | ; Parameters:
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| 68 | ; DS:DI: Ptr to Disk Parameter Table
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| 69 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 70 | ; CS:BP: Ptr to IDEVARS for the controller
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| 71 | ; Returns:
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| 72 | ; Nothing
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| 73 | ; Corrupts registers:
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| 74 | ; AX, BX, CX
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| 75 | ;--------------------------------------------------------------------
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| 76 | .StorePioMode:
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| 77 | call AtaID_GetMaxPioModeToAXandMinCycleTimeToCX
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| 78 | mov [di+DPT_ADVANCED_ATA.wMinPioCycleTime], cx
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| 79 | mov [di+DPT_ADVANCED_ATA.bPioMode], al
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| 80 | or [di+DPT.bFlagsHigh], ah
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| 81 |
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| 82 | ;--------------------------------------------------------------------
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| 83 | ; .DetectAdvancedIdeController
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| 84 | ; Parameters:
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| 85 | ; DS:DI: Ptr to Disk Parameter Table
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| 86 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 87 | ; CS:BP: Ptr to IDEVARS for the controller
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| 88 | ; Returns:
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| 89 | ; Nothing
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| 90 | ; Corrupts registers:
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| 91 | ; AX, BX, CX, DX
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| 92 | ;--------------------------------------------------------------------
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| 93 | .DetectAdvancedIdeController:
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| 94 | call AccessDPT_GetIdeBasePortToBX
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| 95 | call AdvAtaInit_DetectControllerForIdeBaseInBX
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| 96 | mov [di+DPT_ADVANCED_ATA.wControllerID], ax ; Store zero if none detected
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| 97 | mov [di+DPT_ADVANCED_ATA.wControllerBasePort], dx
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| 98 | jnc SHORT .NoAdvancedControllerDetected
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| 99 |
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| 100 | ; Use highest common PIO mode from controller and drive.
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| 101 | ; Many VLB controllers support PIO modes up to 2.
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| 102 | call AdvAtaInit_GetControllerMaxPioModeToAL
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| 103 | jnc SHORT .ChangeTo32bitDevice
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| 104 | and BYTE [di+DPT.bFlagsHigh], ~FLGH_DPT_IORDY ; No IORDY supported if need to limit
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| 105 | MIN_U [di+DPT_ADVANCED_ATA.bPioMode], al
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| 106 |
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| 107 | ; We have detected 32-bit controller so change Device Type since
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| 108 | ; it might have been set to 16-bit on IDEVARS
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| 109 | .ChangeTo32bitDevice:
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| 110 | mov BYTE [di+DPT_ADVANCED_ATA.bDevice], DEVICE_32BIT_ATA
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| 111 |
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| 112 | .NoAdvancedControllerDetected:
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| 113 |
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| 114 | %endif ; MODULE_ADVANCED_ATA
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| 115 |
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| 116 | ;--------------------------------------------------------------------
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| 117 | ; IdeDPT_StoreReversedAddressLinesFlagIfNecessary
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| 118 | ; Parameters:
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| 119 | ; DS:DI: Ptr to Disk Parameter Table
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| 120 | ; CS:BP: Ptr to IDEVARS for the controller
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| 121 | ; Returns:
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| 122 | ; CF: Always clear
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| 123 | ; Corrupts registers:
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| 124 | ; Nothing
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| 125 | ;--------------------------------------------------------------------
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| 126 | IdeDPT_StoreReversedAddressLinesFlagIfNecessary:
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| 127 | cmp BYTE [cs:bp+IDEVARS.bDevice], DEVICE_XTIDE_REV2
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| 128 | je SHORT .SetFlagForSwappedA0andA3
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| 129 | cmp BYTE [cs:bp+IDEVARS.bDevice], DEVICE_FAST_XTIDE
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| 130 | jne SHORT .EndDPT
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| 131 | .SetFlagForSwappedA0andA3:
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| 132 | or BYTE [di+DPT.bFlagsHigh], FLGH_DPT_REVERSED_A0_AND_A3
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| 133 | .EndDPT:
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| 134 | clc
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| 135 | ret
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| 136 |
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| 137 |
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| 138 | %ifdef MODULE_ADVANCED_ATA
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| 139 | ;--------------------------------------------------------------------
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| 140 | ; IdeDPT_StoreDeviceTypeFromIdevarsInCSBPtoDPTinDSDI
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| 141 | ; Parameters:
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| 142 | ; DS:DI: Ptr to Disk Parameter Table
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| 143 | ; CS:BP: Ptr to IDEVARS for the controller
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| 144 | ; Returns:
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| 145 | ; Nothing
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| 146 | ; Corrupts registers:
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| 147 | ; AL
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| 148 | ;--------------------------------------------------------------------
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| 149 | IdeDPT_StoreDeviceTypeFromIdevarsInCSBPtoDPTinDSDI:
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| 150 | mov al, [cs:bp+IDEVARS.bDevice]
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| 151 | mov [di+DPT_ADVANCED_ATA.bDevice], al
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| 152 | ret
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| 153 |
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| 154 | %endif
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