[148] | 1 | ; Project name : XTIDE Universal BIOS |
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[3] | 2 | ; Description : Int 13h function AH=9h, Initialize Drive Parameters. |
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| 3 | |
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[376] | 4 | ; |
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[399] | 5 | ; XTIDE Universal BIOS and Associated Tools |
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[376] | 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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[399] | 12 | ; |
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[376] | 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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[399] | 16 | ; GNU General Public License for more details. |
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[376] | 17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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[399] | 18 | ; |
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[376] | 19 | |
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[3] | 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 | ; Int 13h function AH=9h, Initialize Drive Parameters. |
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| 25 | ; |
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| 26 | ; AH9h_HandlerForInitializeDriveParameters |
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| 27 | ; Parameters: |
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[148] | 28 | ; DL: Translated Drive number |
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| 29 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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[150] | 30 | ; SS:BP: Ptr to IDEPACK |
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| 31 | ; Returns with INTPACK: |
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[3] | 32 | ; AH: Int 13h return status |
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[294] | 33 | ; CF: 0 if successful, 1 if error |
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[3] | 34 | ;-------------------------------------------------------------------- |
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| 35 | AH9h_HandlerForInitializeDriveParameters: |
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[84] | 36 | %ifndef USE_186 |
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[3] | 37 | call AH9h_InitializeDriveForUse |
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[148] | 38 | jmp Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
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[84] | 39 | %else |
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[148] | 40 | push Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
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[162] | 41 | ; Fall to AH9h_InitializeDriveForUse |
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[84] | 42 | %endif |
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[3] | 43 | |
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| 44 | |
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| 45 | ;-------------------------------------------------------------------- |
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[399] | 46 | ; Initialize drive to be ready for use. |
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[3] | 47 | ; |
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| 48 | ; AH9h_InitializeDriveForUse |
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| 49 | ; Parameters: |
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[148] | 50 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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[150] | 51 | ; SS:BP: Ptr to IDEPACK |
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[3] | 52 | ; Returns: |
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| 53 | ; AH: Int 13h return status |
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[294] | 54 | ; CF: 0 if successful, 1 if error |
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[3] | 55 | ; Corrupts registers: |
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[363] | 56 | ; AL, BX, CX, DX |
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[3] | 57 | ;-------------------------------------------------------------------- |
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| 58 | AH9h_InitializeDriveForUse: |
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[399] | 59 | xor ax, ax |
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[3] | 60 | |
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[400] | 61 | %ifdef MODULE_ADVANCED_ATA |
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[399] | 62 | ; Clear Initialization Error flags from DPT |
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[400] | 63 | mov [di+DPT_ADVANCED_ATA.bInitError], al |
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| 64 | %endif |
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[399] | 65 | |
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[258] | 66 | %ifdef MODULE_SERIAL |
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[399] | 67 | ; No need to do this for serial devices |
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| 68 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE ; Clears CF |
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| 69 | jz SHORT .ContinueInitialization |
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| 70 | ret ; With AH and CF cleared |
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| 71 | .ContinueInitialization: |
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[258] | 72 | %endif |
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[294] | 73 | |
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[399] | 74 | push es |
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| 75 | push si |
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| 76 | |
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| 77 | ;;; SelectDrive |
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[3] | 78 | ; Try to select drive and wait until ready |
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[150] | 79 | call AccessDPT_GetDriveSelectByteToAL |
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| 80 | mov [bp+IDEPACK.bDrvAndHead], al |
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| 81 | call Device_SelectDrive |
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[399] | 82 | |
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[400] | 83 | %ifdef MODULE_ADVANCED_ATA |
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[365] | 84 | mov al, FLG_INITERROR_FAILED_TO_SELECT_DRIVE |
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[399] | 85 | call .SetErrorFlagFromALwithErrorCodeInAH |
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[400] | 86 | %endif |
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[399] | 87 | jc .ReturnWithErrorCodeInAH |
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[3] | 88 | |
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[399] | 89 | ;;; InitializeDeviceParameters |
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[3] | 90 | ; Initialize CHS parameters if LBA is not used |
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[399] | 91 | test BYTE [di+DPT.bFlagsLow], FLG_DRVNHEAD_LBA |
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| 92 | jnz SHORT .SkipInitializeDeviceParameters ; No need to initialize CHS parameters if LBA mode enabled |
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[3] | 93 | |
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[157] | 94 | ; Initialize Logical Sectors per Track and Max Head number |
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[227] | 95 | mov ah, [di+DPT.bPchsHeads] |
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[150] | 96 | dec ah ; Max Head number |
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[227] | 97 | mov dl, [di+DPT.bPchsSectors] ; Sectors per Track |
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[150] | 98 | mov al, COMMAND_INITIALIZE_DEVICE_PARAMETERS |
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| 99 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_BSY, FLG_STATUS_BSY) |
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[399] | 100 | call Idepack_StoreNonExtParametersAndIssueCommandFromAL |
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[3] | 101 | |
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[400] | 102 | %ifdef MODULE_ADVANCED_ATA |
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[399] | 103 | mov al, FLG_INITERROR_FAILED_TO_INITIALIZE_CHS_PARAMETERS |
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| 104 | call .SetErrorFlagFromALwithErrorCodeInAH |
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[400] | 105 | %endif |
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[399] | 106 | .SkipInitializeDeviceParameters: |
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[3] | 107 | |
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[399] | 108 | ;;; SetWriteCache |
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| 109 | ; Enable or Disable Write Cache |
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[276] | 110 | call AccessDPT_GetPointerToDRVPARAMStoCSBX |
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| 111 | mov bl, [cs:bx+DRVPARAMS.wFlags] |
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[399] | 112 | push bx ; Save .wFlags for later use in InitializeBlockMode |
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[276] | 113 | and bx, BYTE MASK_DRVPARAMS_WRITECACHE |
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[399] | 114 | jz SHORT .SkipSetWriteCache ; DEFAULT_WRITE_CACHE |
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[276] | 115 | mov si, [cs:bx+.rgbWriteCacheCommands] |
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[399] | 116 | call AH23h_SetControllerFeatures |
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[276] | 117 | |
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[400] | 118 | %ifdef MODULE_ADVANCED_ATA |
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[399] | 119 | mov al, FLG_INITERROR_FAILED_TO_SET_WRITE_CACHE |
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| 120 | call .SetErrorFlagFromALwithErrorCodeInAH |
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[400] | 121 | %endif |
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[399] | 122 | .SkipSetWriteCache: |
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[276] | 123 | |
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[399] | 124 | ;;; RecalibrateDrive |
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| 125 | ; Recalibrate drive by seeking to cylinder 0 |
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| 126 | call AH11h_RecalibrateDrive |
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[276] | 127 | |
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[400] | 128 | %ifdef MODULE_ADVANCED_ATA |
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[399] | 129 | mov al, FLG_INITERROR_FAILED_TO_RECALIBRATE_DRIVE |
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| 130 | call .SetErrorFlagFromALwithErrorCodeInAH |
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[400] | 131 | %endif |
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[399] | 132 | |
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| 133 | ;;; InitializeBlockMode |
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| 134 | ; Initialize block mode transfers |
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| 135 | pop ax ; Restore .wFlags saved in SetWriteCache |
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| 136 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_BLOCK_MODE_SUPPORTED |
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| 137 | jz SHORT .BlockModeNotSupportedOrDisabled |
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| 138 | test al, FLG_DRVPARAMS_BLOCKMODE |
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| 139 | jz SHORT .BlockModeNotSupportedOrDisabled |
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| 140 | |
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| 141 | ; Try block sizes until we find largest possible supported by drive |
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| 142 | mov bl, 128 |
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| 143 | .TryNextBlockSize: |
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| 144 | mov al, bl |
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| 145 | call AH24h_SetBlockSize ; Stores block size to DPT |
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| 146 | jnc SHORT .SupportedBlockSizeFound |
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| 147 | shr bl, 1 |
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| 148 | jnc SHORT .TryNextBlockSize |
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| 149 | |
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[400] | 150 | %ifdef MODULE_ADVANCED_ATA |
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[399] | 151 | mov al, FLG_INITERROR_FAILED_TO_SET_BLOCK_MODE |
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| 152 | call .SetErrorFlagFromALwithErrorCodeInAH |
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[400] | 153 | %endif |
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[399] | 154 | .BlockModeNotSupportedOrDisabled: |
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| 155 | .SupportedBlockSizeFound: |
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| 156 | |
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[363] | 157 | %ifdef MODULE_ADVANCED_ATA |
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[399] | 158 | ;;; InitializePioMode |
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| 159 | ; Initialize fastest supported PIO mode |
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[364] | 160 | mov dl, PIO_DEFAULT_MODE_DISABLE_IORDY |
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| 161 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_IORDY |
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| 162 | jz SHORT .IordyNotSupported |
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| 163 | |
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| 164 | ; Advanced PIO mode 3 and above |
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| 165 | mov dl, [di+DPT_ADVANCED_ATA.bPioMode] |
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| 166 | or dl, PIO_FLOW_CONTROL_MODE_xxx |
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| 167 | |
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| 168 | .IordyNotSupported: |
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[363] | 169 | mov si, FEATURE_SET_TRANSFER_MODE |
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[399] | 170 | call AH23h_SetControllerFeatures |
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[363] | 171 | |
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[399] | 172 | mov al, FLG_INITERROR_FAILED_TO_SET_PIO_MODE |
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| 173 | call .SetErrorFlagFromALwithErrorCodeInAH |
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| 174 | %endif ; MODULE_ADVANCED_ATA |
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[363] | 175 | |
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[399] | 176 | %ifdef MODULE_FEATURE_SETS |
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| 177 | ;;; InitStandbyTimer |
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| 178 | ; Initialize the standby timer (if supported) |
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| 179 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_POWER_MANAGEMENT_SUPPORTED |
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| 180 | jz .NoPowerManagementSupport |
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[363] | 181 | |
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[399] | 182 | mov al, COMMAND_IDLE |
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| 183 | mov dl, [cs:ROMVARS.bIdleTimeout] |
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| 184 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_BSY, FLG_STATUS_BSY) |
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| 185 | call Idepack_StoreNonExtParametersAndIssueCommandFromAL |
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| 186 | |
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[400] | 187 | %ifdef MODULE_ADVANCED_ATA |
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[399] | 188 | mov al, FLG_INITERROR_FAILED_TO_INITIALIZE_STANDBY_TIMER |
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| 189 | call .SetErrorFlagFromALwithErrorCodeInAH |
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[400] | 190 | %endif |
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[399] | 191 | .NoPowerManagementSupport: |
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| 192 | %endif ; MODULE_FEATURE_SETS |
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| 193 | |
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| 194 | ; There might have been several errors so just return one error code for them all |
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[400] | 195 | %ifdef MODULE_ADVANCED_ATA |
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| 196 | mov ah, [di+DPT_ADVANCED_ATA.bInitError] |
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[399] | 197 | test ah, ah ; Clears CF |
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| 198 | jz SHORT .ReturnWithErrorCodeInAH |
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| 199 | mov ah, RET_HD_RESETFAIL |
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| 200 | stc |
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[400] | 201 | %endif |
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[399] | 202 | |
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| 203 | .ReturnWithErrorCodeInAH: |
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| 204 | pop si |
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| 205 | pop es |
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[363] | 206 | ret |
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| 207 | |
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| 208 | |
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[400] | 209 | %ifdef MODULE_ADVANCED_ATA |
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[363] | 210 | ;-------------------------------------------------------------------- |
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[399] | 211 | ; .SetErrorFlagFromALwithErrorCodeInAH |
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[363] | 212 | ; Parameters: |
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| 213 | ; AH: BIOS Error Code |
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| 214 | ; AL: Error flag to set |
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| 215 | ; DS:DI: Ptr to DPT |
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| 216 | ; Returns: |
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| 217 | ; CF: Clear if no error |
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| 218 | ; Set if error flag was set |
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| 219 | ; Corrupts registers: |
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[370] | 220 | ; Nothing |
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[363] | 221 | ;-------------------------------------------------------------------- |
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[399] | 222 | .IgnoreInvalidCommandError: |
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| 223 | xor ah, ah ; Clears CF |
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| 224 | |
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| 225 | .SetErrorFlagFromALwithErrorCodeInAH: |
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[365] | 226 | jnc SHORT .NoErrorFlagToSet |
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[363] | 227 | cmp ah, RET_HD_INVALID |
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| 228 | jbe SHORT .IgnoreInvalidCommandError |
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| 229 | |
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[400] | 230 | or [di+DPT_ADVANCED_ATA.bInitError], al |
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[363] | 231 | stc |
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[365] | 232 | .NoErrorFlagToSet: |
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[3] | 233 | ret |
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[399] | 234 | |
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[400] | 235 | %endif |
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[399] | 236 | |
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[400] | 237 | |
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[399] | 238 | .rgbWriteCacheCommands: |
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| 239 | db 0 ; DEFAULT_WRITE_CACHE |
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| 240 | db FEATURE_DISABLE_WRITE_CACHE ; DISABLE_WRITE_CACHE |
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| 241 | db FEATURE_ENABLE_WRITE_CACHE ; ENABLE_WRITE_CACHE |
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