[150] | 1 | ; Project name : XTIDE Universal BIOS |
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| 2 | ; Description : IDE Device Command functions. |
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| 3 | |
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[376] | 4 | ; |
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[445] | 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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[445] | 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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| 16 | ; GNU General Public License for more details. |
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[445] | 17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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| 18 | ; |
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[376] | 19 | |
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[150] | 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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[507] | 24 | ; IdeCommand_ResetMasterAndSlaveController |
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| 25 | ; Parameters: |
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| 26 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 27 | ; Returns: |
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| 28 | ; AH: INT 13h Error Code |
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| 29 | ; CF: Cleared if success, Set if error |
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| 30 | ; Corrupts registers: |
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| 31 | ; AL, BX, CX, DX |
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| 32 | ;-------------------------------------------------------------------- |
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| 33 | IdeCommand_ResetMasterAndSlaveController: |
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| 34 | ; HSR0: Set_SRST |
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| 35 | call AccessDPT_GetDeviceControlByteToAL |
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| 36 | or al, FLG_DEVCONTROL_SRST | FLG_DEVCONTROL_nIEN ; Set Reset bit |
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| 37 | OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER DEVICE_CONTROL_REGISTER_out |
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| 38 | mov ax, HSR0_RESET_WAIT_US |
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| 39 | call Timer_DelayMicrosecondsFromAX |
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| 40 | |
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| 41 | ; HSR1: Clear_wait |
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| 42 | call AccessDPT_GetDeviceControlByteToAL |
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| 43 | or al, FLG_DEVCONTROL_nIEN |
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| 44 | and al, ~FLG_DEVCONTROL_SRST ; Clear reset bit |
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| 45 | OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER DEVICE_CONTROL_REGISTER_out |
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| 46 | mov ax, HSR1_RESET_WAIT_US |
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| 47 | call Timer_DelayMicrosecondsFromAX |
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| 48 | |
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| 49 | ; HSR2: Check_status |
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| 50 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_MAXIMUM, FLG_STATUS_BSY) |
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| 51 | jmp IdeWait_PollStatusFlagInBLwithTimeoutInBH |
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| 52 | |
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| 53 | |
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| 54 | ;-------------------------------------------------------------------- |
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[150] | 55 | ; IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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| 56 | ; Parameters: |
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| 57 | ; BH: Drive Select byte for Drive and Head Select Register |
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[473] | 58 | ; DX: Autodetected port for XT-CF |
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[150] | 59 | ; DS: Segment to RAMVARS |
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| 60 | ; ES:SI: Ptr to buffer to receive 512-byte IDE Information |
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| 61 | ; CS:BP: Ptr to IDEVARS |
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| 62 | ; Returns: |
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| 63 | ; AH: INT 13h Error Code |
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| 64 | ; CF: Cleared if success, Set if error |
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| 65 | ; Corrupts registers: |
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[443] | 66 | ; AL, BX, CX, DX, SI, DI, ES |
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[150] | 67 | ;-------------------------------------------------------------------- |
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[400] | 68 | IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH: |
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[150] | 69 | ; Create fake DPT to be able to use Device.asm functions |
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| 70 | call FindDPT_ForNewDriveToDSDI |
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[158] | 71 | eMOVZX ax, bh |
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[150] | 72 | mov [di+DPT.wFlags], ax |
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[473] | 73 | call CreateDPT_StoreIdevarsOffsetAndBasePortFromCSBPtoDPTinDSDI |
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| 74 | call IdeDPT_StoreDeviceTypeToDPTinDSDIfromIdevarsInCSBP |
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[365] | 75 | mov BYTE [di+DPT_ATA.bBlockSize], 1 ; Block = 1 sector |
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[150] | 76 | |
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[443] | 77 | ; Wait until drive motors have reached full speed |
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[473] | 78 | cmp bp, BYTE ROMVARS.ideVars0 ; First controller? |
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[150] | 79 | jne SHORT .SkipLongWaitSinceDriveIsNotPrimaryMaster |
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[473] | 80 | test bh, FLG_DRVNHEAD_DRV ; Wait already done for Master |
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[150] | 81 | jnz SHORT .SkipLongWaitSinceDriveIsNotPrimaryMaster |
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[507] | 82 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_MOTOR_STARTUP, FLG_STATUS_DRDY) |
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| 83 | call IdeWait_PollStatusFlagInBLwithTimeoutInBH |
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[150] | 84 | .SkipLongWaitSinceDriveIsNotPrimaryMaster: |
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| 85 | |
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| 86 | ; Create IDEPACK without INTPACK |
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| 87 | push bp |
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| 88 | call Idepack_FakeToSSBP |
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| 89 | |
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[493] | 90 | %ifdef MODULE_8BIT_IDE_ADVANCED |
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[480] | 91 | ; Enable 8-bit PIO mode for 8-bit ATA and XT-CF |
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| 92 | push si |
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| 93 | call AH9h_Enable8bitModeForDevice8bitAta |
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[473] | 94 | xor al, al ; XTCF_8BIT_PIO_MODE |
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[480] | 95 | call AH9h_SetModeFromALtoXTCF |
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[443] | 96 | pop si |
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[493] | 97 | %endif ; MODULE_8BIT_IDE_ADVANCED |
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[437] | 98 | |
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[150] | 99 | ; Prepare to output Identify Device command |
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| 100 | mov dl, 1 ; Sector count (required by IdeTransfer.asm) |
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| 101 | mov al, COMMAND_IDENTIFY_DEVICE |
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[411] | 102 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRQ, FLG_STATUS_DRQ) |
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[150] | 103 | call Idepack_StoreNonExtParametersAndIssueCommandFromAL |
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| 104 | |
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| 105 | ; Clean stack and return |
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[439] | 106 | .FailedToSet8bitMode: |
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[443] | 107 | lea sp, [bp+SIZE_OF_IDEPACK_WITHOUT_INTPACK] ; This assumes BP hasn't changed between Idepack_FakeToSSBP and here |
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[150] | 108 | pop bp |
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| 109 | ret |
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| 110 | |
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| 111 | |
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| 112 | ;-------------------------------------------------------------------- |
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| 113 | ; IdeCommand_OutputWithParameters |
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| 114 | ; Parameters: |
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| 115 | ; BH: System timer ticks for timeout |
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| 116 | ; BL: IDE Status Register bit to poll after command |
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| 117 | ; ES:SI: Ptr to buffer (for data transfer commands) |
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| 118 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 119 | ; SS:BP: Ptr to IDEPACK |
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| 120 | ; Returns: |
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| 121 | ; AH: INT 13h Error Code |
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[249] | 122 | ; CX: Number of successfully transferred sectors (for transfer commands) |
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[150] | 123 | ; CF: Cleared if success, Set if error |
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| 124 | ; Corrupts registers: |
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[249] | 125 | ; AL, BX, (CX), DX, (ES:SI for data transfer commands) |
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[150] | 126 | ;-------------------------------------------------------------------- |
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| 127 | ALIGN JUMP_ALIGN |
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[400] | 128 | IdeCommand_OutputWithParameters: |
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[158] | 129 | push bx ; Store status register bits to poll |
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[150] | 130 | |
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| 131 | ; Select Master or Slave drive and output head number or LBA28 top bits |
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[400] | 132 | call IdeCommand_SelectDrive |
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[150] | 133 | jc SHORT .DriveNotReady |
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| 134 | |
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| 135 | ; Output Device Control Byte to enable or disable interrupts |
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| 136 | mov al, [bp+IDEPACK.bDeviceControl] |
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[400] | 137 | %ifdef MODULE_IRQ |
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[158] | 138 | test al, FLG_DEVCONTROL_nIEN ; Interrupts disabled? |
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[152] | 139 | jnz SHORT .DoNotSetInterruptInServiceFlag |
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[158] | 140 | |
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| 141 | ; Clear Task Flag and set Interrupt In-Service Flag |
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| 142 | or BYTE [di+DPT.bFlagsHigh], FLGH_DPT_INTERRUPT_IN_SERVICE |
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[152] | 143 | push ds |
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[158] | 144 | LOAD_BDA_SEGMENT_TO ds, dx, ! ; Also zero DX |
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| 145 | mov [BDA.bHDTaskFlg], dl |
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[152] | 146 | pop ds |
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| 147 | .DoNotSetInterruptInServiceFlag: |
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[266] | 148 | %endif |
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[267] | 149 | OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER DEVICE_CONTROL_REGISTER_out |
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[150] | 150 | |
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| 151 | ; Output Feature Number |
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| 152 | mov al, [bp+IDEPACK.bFeatures] |
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[267] | 153 | OUTPUT_AL_TO_IDE_REGISTER FEATURES_REGISTER_out |
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[150] | 154 | |
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| 155 | ; Output Sector Address High (only used by LBA48) |
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[285] | 156 | %ifdef MODULE_EBIOS |
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[294] | 157 | eMOVZX ax, [bp+IDEPACK.bLbaLowExt] ; Zero sector count |
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[150] | 158 | mov cx, [bp+IDEPACK.wLbaMiddleAndHighExt] |
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[400] | 159 | call OutputSectorCountAndAddress |
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[285] | 160 | %endif |
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[150] | 161 | |
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| 162 | ; Output Sector Address Low |
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| 163 | mov ax, [bp+IDEPACK.wSectorCountAndLbaLow] |
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| 164 | mov cx, [bp+IDEPACK.wLbaMiddleAndHigh] |
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[400] | 165 | call OutputSectorCountAndAddress |
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[150] | 166 | |
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| 167 | ; Output command |
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| 168 | mov al, [bp+IDEPACK.bCommand] |
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[267] | 169 | OUTPUT_AL_TO_IDE_REGISTER COMMAND_REGISTER_out |
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[150] | 170 | |
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| 171 | ; Wait until command completed |
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[400] | 172 | pop bx ; Pop status and timeout for polling |
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| 173 | cmp bl, FLG_STATUS_DRQ ; Data transfer started? |
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| 174 | jne SHORT .WaitUntilNonTransferCommandCompletes |
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[493] | 175 | %ifdef MODULE_8BIT_IDE_ADVANCED |
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[480] | 176 | cmp BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_MEMMAP |
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[536] | 177 | jae SHORT JrIdeTransfer_StartWithCommandInAL ; DEVICE_8BIT_XTCF_MEMMAP, DEVICE_8BIT_JRIDE_ISA or DEVICE_8BIT_ADP50L |
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[480] | 178 | %endif |
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[474] | 179 | jmp IdeTransfer_StartWithCommandInAL |
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[400] | 180 | |
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| 181 | .WaitUntilNonTransferCommandCompletes: |
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| 182 | %ifdef MODULE_IRQ |
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[150] | 183 | test BYTE [bp+IDEPACK.bDeviceControl], FLG_DEVCONTROL_nIEN |
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[400] | 184 | jz SHORT .PollStatusFlagInsteadOfWaitIrq |
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| 185 | jmp IdeWait_IRQorStatusFlagInBLwithTimeoutInBH |
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| 186 | .PollStatusFlagInsteadOfWaitIrq: |
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| 187 | %endif |
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| 188 | jmp IdeWait_PollStatusFlagInBLwithTimeoutInBH |
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[150] | 189 | |
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| 190 | .DriveNotReady: |
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| 191 | pop bx ; Clean stack |
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| 192 | ret |
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| 193 | |
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| 194 | |
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| 195 | ;-------------------------------------------------------------------- |
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| 196 | ; IdeCommand_SelectDrive |
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| 197 | ; Parameters: |
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| 198 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 199 | ; SS:BP: Ptr to IDEPACK |
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| 200 | ; Returns: |
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| 201 | ; AH: INT 13h Error Code |
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| 202 | ; CF: Cleared if success, Set if error |
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| 203 | ; Corrupts registers: |
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| 204 | ; AL, BX, CX, DX |
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| 205 | ;-------------------------------------------------------------------- |
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| 206 | ALIGN JUMP_ALIGN |
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[400] | 207 | IdeCommand_SelectDrive: |
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[444] | 208 | ; We use different timeout value when detecting drives. |
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| 209 | ; This prevents unnecessary long delays when drive is not present. |
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[473] | 210 | mov cx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRDY, FLG_STATUS_DRDY) |
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[444] | 211 | cmp WORD [RAMVARS.wDrvDetectSignature], RAMVARS_DRV_DETECT_SIGNATURE |
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[473] | 212 | eCMOVE ch, TIMEOUT_SELECT_DRIVE_DURING_DRIVE_DETECTION |
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[408] | 213 | |
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[150] | 214 | ; Select Master or Slave Drive |
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| 215 | mov al, [bp+IDEPACK.bDrvAndHead] |
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[267] | 216 | OUTPUT_AL_TO_IDE_REGISTER DRIVE_AND_HEAD_SELECT_REGISTER |
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[473] | 217 | mov bx, cx |
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[400] | 218 | call IdeWait_PollStatusFlagInBLwithTimeoutInBH |
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[150] | 219 | |
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[281] | 220 | ; Ignore errors from IDE Error Register (set by previous command) |
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[285] | 221 | cmp ah, RET_HD_TIMEOUT |
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| 222 | je SHORT .FailedToSelectDrive |
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| 223 | xor ax, ax ; Always success unless timeout |
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| 224 | ret |
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| 225 | .FailedToSelectDrive: |
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[281] | 226 | stc |
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[279] | 227 | ret |
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[150] | 228 | |
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[279] | 229 | |
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[150] | 230 | ;-------------------------------------------------------------------- |
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| 231 | ; OutputSectorCountAndAddress |
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| 232 | ; Parameters: |
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| 233 | ; AH: LBA low bits (Sector Number) |
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| 234 | ; AL: Sector Count |
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| 235 | ; CL: LBA middle bits (Cylinder Number low) |
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| 236 | ; CH: LBA high bits (Cylinder Number high) |
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| 237 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 238 | ; Returns: |
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| 239 | ; Nothing |
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| 240 | ; Corrupts registers: |
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| 241 | ; AL, BX, DX |
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| 242 | ;-------------------------------------------------------------------- |
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| 243 | ALIGN JUMP_ALIGN |
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[400] | 244 | OutputSectorCountAndAddress: |
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[267] | 245 | OUTPUT_AL_TO_IDE_REGISTER SECTOR_COUNT_REGISTER |
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[150] | 246 | |
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| 247 | mov al, ah |
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[267] | 248 | OUTPUT_AL_TO_IDE_REGISTER LBA_LOW_REGISTER |
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[150] | 249 | |
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| 250 | mov al, cl |
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[267] | 251 | OUTPUT_AL_TO_IDE_REGISTER LBA_MIDDLE_REGISTER |
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[150] | 252 | |
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| 253 | mov al, ch |
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[473] | 254 | OUTPUT_AL_TO_IDE_REGISTER LBA_HIGH_REGISTER |
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| 255 | ret |
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