[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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[526] | 6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team. |
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[376] | 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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[410] | 24 | ; STORE_ERROR_FLAG_TO_DPT |
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| 25 | ; Parameters: |
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| 26 | ; %1: Error flag to set |
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| 27 | ; AH: BIOS Error Code |
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| 28 | ; DS:DI: Ptr to DPT |
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| 29 | ; CF: Set if error code in AH |
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| 30 | ; Returns: |
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| 31 | ; CF: Clear if no error |
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| 32 | ; Set if error flag was set |
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| 33 | ; Corrupts registers: |
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| 34 | ; Nothing |
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| 35 | ;-------------------------------------------------------------------- |
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| 36 | %macro STORE_ERROR_FLAG_TO_DPT 1 |
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| 37 | mov al, %1 |
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| 38 | call SetErrorFlagFromALwithErrorCodeInAH |
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| 39 | %endmacro |
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| 40 | |
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| 41 | |
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| 42 | ;-------------------------------------------------------------------- |
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[3] | 43 | ; Int 13h function AH=9h, Initialize Drive Parameters. |
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| 44 | ; |
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| 45 | ; AH9h_HandlerForInitializeDriveParameters |
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| 46 | ; Parameters: |
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[148] | 47 | ; DL: Translated Drive number |
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| 48 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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[150] | 49 | ; SS:BP: Ptr to IDEPACK |
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| 50 | ; Returns with INTPACK: |
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[3] | 51 | ; AH: Int 13h return status |
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[294] | 52 | ; CF: 0 if successful, 1 if error |
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[3] | 53 | ;-------------------------------------------------------------------- |
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| 54 | AH9h_HandlerForInitializeDriveParameters: |
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[84] | 55 | %ifndef USE_186 |
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[3] | 56 | call AH9h_InitializeDriveForUse |
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[148] | 57 | jmp Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
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[84] | 58 | %else |
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[148] | 59 | push Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
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[162] | 60 | ; Fall to AH9h_InitializeDriveForUse |
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[84] | 61 | %endif |
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[3] | 62 | |
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| 63 | |
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| 64 | ;-------------------------------------------------------------------- |
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[399] | 65 | ; Initialize drive to be ready for use. |
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[3] | 66 | ; |
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| 67 | ; AH9h_InitializeDriveForUse |
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| 68 | ; Parameters: |
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[148] | 69 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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[150] | 70 | ; SS:BP: Ptr to IDEPACK |
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[3] | 71 | ; Returns: |
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| 72 | ; AH: Int 13h return status |
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[294] | 73 | ; CF: 0 if successful, 1 if error |
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[3] | 74 | ; Corrupts registers: |
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[521] | 75 | ; AL, CX |
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[3] | 76 | ;-------------------------------------------------------------------- |
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| 77 | AH9h_InitializeDriveForUse: |
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[410] | 78 | xor ax, ax ; Clear AH to assume no errors |
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[3] | 79 | |
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[400] | 80 | %ifdef MODULE_ADVANCED_ATA |
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[399] | 81 | ; Clear Initialization Error flags from DPT |
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[422] | 82 | mov [di+DPT.bInitError], al |
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[400] | 83 | %endif |
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[399] | 84 | |
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[258] | 85 | %ifdef MODULE_SERIAL |
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[399] | 86 | ; No need to do this for serial devices |
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| 87 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE ; Clears CF |
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| 88 | jz SHORT .ContinueInitialization |
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| 89 | ret ; With AH and CF cleared |
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[410] | 90 | .ContinueInitialization: |
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[258] | 91 | %endif |
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[294] | 92 | |
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[399] | 93 | push es |
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| 94 | push si |
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[521] | 95 | push dx |
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| 96 | push bx |
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[399] | 97 | |
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[410] | 98 | |
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[399] | 99 | ;;; SelectDrive |
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[3] | 100 | ; Try to select drive and wait until ready |
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[542] | 101 | call AccessDPT_GetDriveSelectByteToAL |
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[150] | 102 | mov [bp+IDEPACK.bDrvAndHead], al |
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| 103 | call Device_SelectDrive |
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[410] | 104 | STORE_ERROR_FLAG_TO_DPT FLG_INITERROR_FAILED_TO_SELECT_DRIVE |
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[505] | 105 | %ifdef USE_386 |
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| 106 | jc .ReturnWithErrorCodeInAH |
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| 107 | %else |
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[410] | 108 | jnc SHORT .ContinueInitializationSinceDriveSelectedSuccesfully |
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| 109 | jmp .ReturnWithErrorCodeInAH |
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| 110 | .ContinueInitializationSinceDriveSelectedSuccesfully: |
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[505] | 111 | %endif |
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[399] | 112 | |
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[3] | 113 | |
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[473] | 114 | ;;; Set XT-CF mode |
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[493] | 115 | %ifdef MODULE_8BIT_IDE_ADVANCED |
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[473] | 116 | call AccessDPT_GetIdevarsToCSBX |
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| 117 | mov al, [cs:bx+IDEVARS.bXTCFcontrolRegister] |
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[480] | 118 | call AH9h_SetModeFromALtoXTCF |
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[473] | 119 | STORE_ERROR_FLAG_TO_DPT FLG_INITERROR_FAILED_TO_SET_XTCF_MODE |
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| 120 | .DoNotSetXTCFmode: |
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[493] | 121 | %endif ; MODULE_8BIT_IDE_ADVANCED |
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[473] | 122 | |
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[493] | 123 | %ifdef MODULE_8BIT_IDE |
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[480] | 124 | ;;; Set 8-bit PIO mode |
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| 125 | call AH9h_Enable8bitModeForDevice8bitAta |
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| 126 | STORE_ERROR_FLAG_TO_DPT FLG_INITERROR_FAILED_TO_SET_8BIT_MODE |
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| 127 | .DoNotSet8bitMode: |
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| 128 | %endif ; MODULE_8BIT_IDE |
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| 129 | |
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| 130 | |
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[399] | 131 | ;;; InitializeDeviceParameters |
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[157] | 132 | ; Initialize Logical Sectors per Track and Max Head number |
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[542] | 133 | mov ax, [di+DPT.wPchsHeadsAndSectors] |
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[421] | 134 | dec ax ; Max Head number |
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[542] | 135 | xchg ah, al |
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| 136 | mov dl, al ; Sectors per track |
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[150] | 137 | mov al, COMMAND_INITIALIZE_DEVICE_PARAMETERS |
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| 138 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_BSY, FLG_STATUS_BSY) |
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[399] | 139 | call Idepack_StoreNonExtParametersAndIssueCommandFromAL |
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[410] | 140 | STORE_ERROR_FLAG_TO_DPT FLG_INITERROR_FAILED_TO_INITIALIZE_CHS_PARAMETERS |
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[399] | 141 | .SkipInitializeDeviceParameters: |
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[3] | 142 | |
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[410] | 143 | |
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[399] | 144 | ;;; SetWriteCache |
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| 145 | ; Enable or Disable Write Cache |
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[276] | 146 | call AccessDPT_GetPointerToDRVPARAMStoCSBX |
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| 147 | mov bl, [cs:bx+DRVPARAMS.wFlags] |
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[399] | 148 | push bx ; Save .wFlags for later use in InitializeBlockMode |
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[276] | 149 | and bx, BYTE MASK_DRVPARAMS_WRITECACHE |
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[399] | 150 | jz SHORT .SkipSetWriteCache ; DEFAULT_WRITE_CACHE |
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[276] | 151 | mov si, [cs:bx+.rgbWriteCacheCommands] |
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[399] | 152 | call AH23h_SetControllerFeatures |
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[410] | 153 | STORE_ERROR_FLAG_TO_DPT FLG_INITERROR_FAILED_TO_SET_WRITE_CACHE |
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[399] | 154 | .SkipSetWriteCache: |
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[276] | 155 | |
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[410] | 156 | |
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[399] | 157 | ;;; RecalibrateDrive |
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| 158 | ; Recalibrate drive by seeking to cylinder 0 |
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| 159 | call AH11h_RecalibrateDrive |
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[410] | 160 | STORE_ERROR_FLAG_TO_DPT FLG_INITERROR_FAILED_TO_RECALIBRATE_DRIVE |
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[276] | 161 | |
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[399] | 162 | |
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| 163 | ;;; InitializeBlockMode |
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| 164 | ; Initialize block mode transfers |
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| 165 | pop ax ; Restore .wFlags saved in SetWriteCache |
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| 166 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_BLOCK_MODE_SUPPORTED |
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| 167 | jz SHORT .BlockModeNotSupportedOrDisabled |
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| 168 | test al, FLG_DRVPARAMS_BLOCKMODE |
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| 169 | jz SHORT .BlockModeNotSupportedOrDisabled |
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| 170 | |
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| 171 | ; Try block sizes until we find largest possible supported by drive |
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| 172 | mov bl, 128 |
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| 173 | .TryNextBlockSize: |
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| 174 | mov al, bl |
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| 175 | call AH24h_SetBlockSize ; Stores block size to DPT |
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| 176 | jnc SHORT .SupportedBlockSizeFound |
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| 177 | shr bl, 1 |
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| 178 | jnc SHORT .TryNextBlockSize |
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[410] | 179 | STORE_ERROR_FLAG_TO_DPT FLG_INITERROR_FAILED_TO_SET_BLOCK_MODE |
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[399] | 180 | .BlockModeNotSupportedOrDisabled: |
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| 181 | .SupportedBlockSizeFound: |
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| 182 | |
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[410] | 183 | |
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[363] | 184 | %ifdef MODULE_ADVANCED_ATA |
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[399] | 185 | ;;; InitializePioMode |
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| 186 | ; Initialize fastest supported PIO mode |
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[364] | 187 | mov dl, PIO_DEFAULT_MODE_DISABLE_IORDY |
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| 188 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_IORDY |
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| 189 | jz SHORT .IordyNotSupported |
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| 190 | |
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| 191 | ; Advanced PIO mode 3 and above |
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| 192 | mov dl, [di+DPT_ADVANCED_ATA.bPioMode] |
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| 193 | or dl, PIO_FLOW_CONTROL_MODE_xxx |
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| 194 | |
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| 195 | .IordyNotSupported: |
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[363] | 196 | mov si, FEATURE_SET_TRANSFER_MODE |
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[399] | 197 | call AH23h_SetControllerFeatures |
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[410] | 198 | STORE_ERROR_FLAG_TO_DPT FLG_INITERROR_FAILED_TO_SET_PIO_MODE |
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[399] | 199 | %endif ; MODULE_ADVANCED_ATA |
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[363] | 200 | |
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[410] | 201 | |
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[399] | 202 | %ifdef MODULE_FEATURE_SETS |
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| 203 | ;;; InitStandbyTimer |
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| 204 | ; Initialize the standby timer (if supported) |
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| 205 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_POWER_MANAGEMENT_SUPPORTED |
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[410] | 206 | jz SHORT .NoPowerManagementSupport |
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[363] | 207 | |
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[399] | 208 | mov al, COMMAND_IDLE |
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| 209 | mov dl, [cs:ROMVARS.bIdleTimeout] |
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| 210 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_BSY, FLG_STATUS_BSY) |
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| 211 | call Idepack_StoreNonExtParametersAndIssueCommandFromAL |
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[410] | 212 | STORE_ERROR_FLAG_TO_DPT FLG_INITERROR_FAILED_TO_INITIALIZE_STANDBY_TIMER |
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[399] | 213 | .NoPowerManagementSupport: |
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| 214 | %endif ; MODULE_FEATURE_SETS |
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| 215 | |
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[410] | 216 | |
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[399] | 217 | ; There might have been several errors so just return one error code for them all |
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[410] | 218 | .ReturnWithErrorCodeInAH: |
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[400] | 219 | %ifdef MODULE_ADVANCED_ATA |
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[422] | 220 | mov ah, [di+DPT.bInitError] |
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[399] | 221 | test ah, ah ; Clears CF |
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[410] | 222 | jz SHORT .ReturnWithSuccess |
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[399] | 223 | mov ah, RET_HD_RESETFAIL |
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| 224 | stc |
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[410] | 225 | .ReturnWithSuccess: |
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[400] | 226 | %endif |
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[399] | 227 | |
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[521] | 228 | pop bx |
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| 229 | pop dx |
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[399] | 230 | pop si |
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| 231 | pop es |
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[363] | 232 | ret |
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| 233 | |
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| 234 | |
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[410] | 235 | .rgbWriteCacheCommands: |
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| 236 | db 0 ; DEFAULT_WRITE_CACHE |
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| 237 | db FEATURE_DISABLE_WRITE_CACHE ; DISABLE_WRITE_CACHE |
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| 238 | db FEATURE_ENABLE_WRITE_CACHE ; ENABLE_WRITE_CACHE |
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| 239 | |
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| 240 | |
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| 241 | |
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[363] | 242 | ;-------------------------------------------------------------------- |
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[410] | 243 | ; SetErrorFlagFromALwithErrorCodeInAH |
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[363] | 244 | ; Parameters: |
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| 245 | ; AH: BIOS Error Code |
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| 246 | ; AL: Error flag to set |
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| 247 | ; DS:DI: Ptr to DPT |
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[410] | 248 | ; CF: Set if error code in AH |
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| 249 | ; Clear if AH = 0 |
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[363] | 250 | ; Returns: |
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| 251 | ; CF: Clear if no error |
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| 252 | ; Set if error flag was set |
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| 253 | ; Corrupts registers: |
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[370] | 254 | ; Nothing |
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[363] | 255 | ;-------------------------------------------------------------------- |
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[410] | 256 | IgnoreInvalidCommandError: |
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[399] | 257 | xor ah, ah ; Clears CF |
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[410] | 258 | SetErrorFlagFromALwithErrorCodeInAH: |
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[365] | 259 | jnc SHORT .NoErrorFlagToSet |
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[363] | 260 | cmp ah, RET_HD_INVALID |
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[410] | 261 | jbe SHORT IgnoreInvalidCommandError |
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[363] | 262 | |
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[422] | 263 | or [di+DPT.bInitError], al |
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[363] | 264 | stc |
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[365] | 265 | .NoErrorFlagToSet: |
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[3] | 266 | ret |
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[480] | 267 | |
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| 268 | |
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[493] | 269 | %ifdef MODULE_8BIT_IDE_ADVANCED |
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[480] | 270 | ;-------------------------------------------------------------------- |
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| 271 | ; AH9h_SetModeFromALtoXTCF |
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| 272 | ; Parameters: |
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| 273 | ; AL: XT-CF Mode to set |
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| 274 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 275 | ; SS:BP: Ptr to IDEPACK |
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| 276 | ; Returns: |
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| 277 | ; AH: Int 13h return status |
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| 278 | ; CF: Clear if successful or device is not XT-CF |
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| 279 | ; Set if failed to set mode for XT-CF |
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| 280 | ; Corrupts registers: |
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| 281 | ; AL, BX, CX, DX, SI |
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| 282 | ;-------------------------------------------------------------------- |
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| 283 | AH9h_SetModeFromALtoXTCF: |
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| 284 | call AccessDPT_IsThisDeviceXTCF |
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| 285 | jne SHORT IgnoreInvalidCommandError |
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| 286 | jmp AH1Eh_ChangeXTCFmodeBasedOnControlRegisterInAL |
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[493] | 287 | %endif ; MODULE_8BIT_IDE_ADVANCED |
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[480] | 288 | |
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[493] | 289 | %ifdef MODULE_8BIT_IDE |
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[480] | 290 | ;-------------------------------------------------------------------- |
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| 291 | ; AH9h_Enable8bitModeForDevice8bitAta |
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| 292 | ; Parameters: |
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| 293 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 294 | ; SS:BP: Ptr to IDEPACK |
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| 295 | ; Returns: |
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| 296 | ; AH: Int 13h return status |
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| 297 | ; CF: Clear if successful or device is not DEVICE_8BIT_ATA |
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| 298 | ; Set if failed to set 8-bit mode for DEVICE_8BIT_ATA |
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| 299 | ; Corrupts registers: |
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| 300 | ; AL, BX, CX, DX, SI |
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| 301 | ;-------------------------------------------------------------------- |
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| 302 | AH9h_Enable8bitModeForDevice8bitAta: |
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| 303 | cmp BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_ATA |
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| 304 | jne SHORT IgnoreInvalidCommandError |
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| 305 | jmp AH23h_Enable8bitPioMode |
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[493] | 306 | %endif |
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