| 1 | ; Project name : XTIDE Universal BIOS
|
|---|
| 2 | ; Description : IDE Device Command functions.
|
|---|
| 3 |
|
|---|
| 4 | ;
|
|---|
| 5 | ; XTIDE Universal BIOS and Associated Tools
|
|---|
| 6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
|
|---|
| 7 | ;
|
|---|
| 8 | ; This program is free software; you can redistribute it and/or modify
|
|---|
| 9 | ; it under the terms of the GNU General Public License as published by
|
|---|
| 10 | ; the Free Software Foundation; either version 2 of the License, or
|
|---|
| 11 | ; (at your option) any later version.
|
|---|
| 12 | ;
|
|---|
| 13 | ; This program is distributed in the hope that it will be useful,
|
|---|
| 14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 16 | ; GNU General Public License for more details.
|
|---|
| 17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
|
|---|
| 18 | ;
|
|---|
| 19 |
|
|---|
| 20 | ; Section containing code
|
|---|
| 21 | SECTION .text
|
|---|
| 22 |
|
|---|
| 23 | ;--------------------------------------------------------------------
|
|---|
| 24 | ; IdeCommand_ResetMasterAndSlaveController
|
|---|
| 25 | ; Parameters:
|
|---|
| 26 | ; DS:DI: Ptr to DPT (in RAMVARS segment)
|
|---|
| 27 | ; Returns:
|
|---|
| 28 | ; AH: INT 13h Error Code
|
|---|
| 29 | ; CF: Cleared if success, Set if error
|
|---|
| 30 | ; Corrupts registers:
|
|---|
| 31 | ; AL, BX, CX, DX
|
|---|
| 32 | ;--------------------------------------------------------------------
|
|---|
| 33 | IdeCommand_ResetMasterAndSlaveController:
|
|---|
| 34 | ; HSR0: Set_SRST
|
|---|
| 35 | call AccessDPT_GetDeviceControlByteToAL
|
|---|
| 36 | or al, FLG_DEVCONTROL_SRST | FLG_DEVCONTROL_nIEN ; Set Reset bit
|
|---|
| 37 | OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER DEVICE_CONTROL_REGISTER_out
|
|---|
| 38 | mov ax, HSR0_RESET_WAIT_US
|
|---|
| 39 | call Timer_DelayMicrosecondsFromAX
|
|---|
| 40 |
|
|---|
| 41 | ; HSR1: Clear_wait
|
|---|
| 42 | call AccessDPT_GetDeviceControlByteToAL
|
|---|
| 43 | or al, FLG_DEVCONTROL_nIEN
|
|---|
| 44 | and al, ~FLG_DEVCONTROL_SRST ; Clear reset bit
|
|---|
| 45 | OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER DEVICE_CONTROL_REGISTER_out
|
|---|
| 46 | mov ax, HSR1_RESET_WAIT_US
|
|---|
| 47 | call Timer_DelayMicrosecondsFromAX
|
|---|
| 48 |
|
|---|
| 49 | ; HSR2: Check_status
|
|---|
| 50 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_MAXIMUM, FLG_STATUS_BSY)
|
|---|
| 51 | jmp IdeWait_PollStatusFlagInBLwithTimeoutInBH
|
|---|
| 52 |
|
|---|
| 53 |
|
|---|
| 54 | ;--------------------------------------------------------------------
|
|---|
| 55 | ; IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH
|
|---|
| 56 | ; Parameters:
|
|---|
| 57 | ; BH: Drive Select byte for Drive and Head Select Register
|
|---|
| 58 | ; DX: Autodetected port for XT-CF
|
|---|
| 59 | ; DS: Segment to RAMVARS
|
|---|
| 60 | ; ES:SI: Ptr to buffer to receive 512-byte IDE Information
|
|---|
| 61 | ; CS:BP: Ptr to IDEVARS
|
|---|
| 62 | ; Returns:
|
|---|
| 63 | ; AH: INT 13h Error Code
|
|---|
| 64 | ; CF: Cleared if success, Set if error
|
|---|
| 65 | ; Corrupts registers:
|
|---|
| 66 | ; AL, BX, CX, DX, SI, DI, ES
|
|---|
| 67 | ;--------------------------------------------------------------------
|
|---|
| 68 | IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH:
|
|---|
| 69 | ; Create fake DPT to be able to use Device.asm functions
|
|---|
| 70 | call FindDPT_ForNewDriveToDSDI
|
|---|
| 71 | eMOVZX ax, bh
|
|---|
| 72 | mov [di+DPT.wFlags], ax
|
|---|
| 73 | call CreateDPT_StoreIdevarsOffsetAndBasePortFromCSBPtoDPTinDSDI
|
|---|
| 74 | call IdeDPT_StoreDeviceTypeToDPTinDSDIfromIdevarsInCSBP
|
|---|
| 75 | mov BYTE [di+DPT_ATA.bBlockSize], 1 ; Block = 1 sector
|
|---|
| 76 |
|
|---|
| 77 | ; Wait until drive motors have reached full speed
|
|---|
| 78 | cmp bp, BYTE ROMVARS.ideVars0 ; First controller?
|
|---|
| 79 | jne SHORT .SkipLongWaitSinceDriveIsNotPrimaryMaster
|
|---|
| 80 | test bh, FLG_DRVNHEAD_DRV ; Wait already done for Master
|
|---|
| 81 | jnz SHORT .SkipLongWaitSinceDriveIsNotPrimaryMaster
|
|---|
| 82 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_MOTOR_STARTUP, FLG_STATUS_BSY)
|
|---|
| 83 | call IdeWait_PollStatusFlagInBLwithTimeoutInBH
|
|---|
| 84 | .SkipLongWaitSinceDriveIsNotPrimaryMaster:
|
|---|
| 85 |
|
|---|
| 86 | ; Create IDEPACK without INTPACK
|
|---|
| 87 | push bp
|
|---|
| 88 | call Idepack_FakeToSSBP
|
|---|
| 89 |
|
|---|
| 90 | %ifdef MODULE_8BIT_IDE
|
|---|
| 91 | push si
|
|---|
| 92 |
|
|---|
| 93 | ; Enable 8-bit PIO for DEVICE_8BIT_ATA (no need to verify device type here)
|
|---|
| 94 | call AH9h_Enable8bitModeForDevice8bitAta
|
|---|
| 95 |
|
|---|
| 96 | ; Set XT-CF mode. No need to check here if device is XT-CF or not.
|
|---|
| 97 | %ifdef MODULE_8BIT_IDE_ADVANCED
|
|---|
| 98 | call AH1Eh_GetCurrentXTCFmodeToAX ; Reads from DPT_ATA.bDevice that we just stored
|
|---|
| 99 | call AH9h_SetModeFromALtoXTCF ; Enables/disables 8-bit mode when necessary
|
|---|
| 100 | %endif ; MODULE_8BIT_IDE_ADVANCED
|
|---|
| 101 | pop si
|
|---|
| 102 | %endif ; MODULE_8BIT_IDE
|
|---|
| 103 |
|
|---|
| 104 | ; Prepare to output Identify Device command
|
|---|
| 105 | mov dl, 1 ; Sector count (required by IdeTransfer.asm)
|
|---|
| 106 | mov al, COMMAND_IDENTIFY_DEVICE
|
|---|
| 107 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRQ, FLG_STATUS_DRQ)
|
|---|
| 108 | call Idepack_StoreNonExtParametersAndIssueCommandFromAL
|
|---|
| 109 |
|
|---|
| 110 | ; Clean stack and return
|
|---|
| 111 | lea sp, [bp+SIZE_OF_IDEPACK_WITHOUT_INTPACK] ; This assumes BP hasn't changed between Idepack_FakeToSSBP and here
|
|---|
| 112 | pop bp
|
|---|
| 113 | ret
|
|---|
| 114 |
|
|---|
| 115 |
|
|---|
| 116 | ;--------------------------------------------------------------------
|
|---|
| 117 | ; IdeCommand_OutputWithParameters
|
|---|
| 118 | ; Parameters:
|
|---|
| 119 | ; BH: System timer ticks for timeout
|
|---|
| 120 | ; BL: IDE Status Register bit to poll after command
|
|---|
| 121 | ; ES:SI: Ptr to buffer (for data transfer commands)
|
|---|
| 122 | ; DS:DI: Ptr to DPT (in RAMVARS segment)
|
|---|
| 123 | ; SS:BP: Ptr to IDEPACK
|
|---|
| 124 | ; Returns:
|
|---|
| 125 | ; AH: INT 13h Error Code
|
|---|
| 126 | ; CX: Number of successfully transferred sectors (for transfer commands)
|
|---|
| 127 | ; CF: Cleared if success, Set if error
|
|---|
| 128 | ; Corrupts registers:
|
|---|
| 129 | ; AL, BX, (CX), DX, (ES:SI for data transfer commands)
|
|---|
| 130 | ;--------------------------------------------------------------------
|
|---|
| 131 | ALIGN JUMP_ALIGN
|
|---|
| 132 | IdeCommand_OutputWithParameters:
|
|---|
| 133 | push bx ; Store status register bits to poll
|
|---|
| 134 |
|
|---|
| 135 | ; Select Master or Slave drive and output head number or LBA28 top bits
|
|---|
| 136 | call IdeCommand_SelectDrive
|
|---|
| 137 | jc SHORT .DriveNotReady
|
|---|
| 138 |
|
|---|
| 139 | ; Output Device Control Byte to enable or disable interrupts
|
|---|
| 140 | mov al, [bp+IDEPACK.bDeviceControl]
|
|---|
| 141 | %ifdef MODULE_IRQ
|
|---|
| 142 | test al, FLG_DEVCONTROL_nIEN ; Interrupts disabled?
|
|---|
| 143 | jnz SHORT .DoNotSetInterruptInServiceFlag
|
|---|
| 144 |
|
|---|
| 145 | ; Clear Task Flag and set Interrupt In-Service Flag
|
|---|
| 146 | push ds
|
|---|
| 147 | LOAD_BDA_SEGMENT_TO ds, dx
|
|---|
| 148 | mov BYTE [BDA.bHDTaskFlg], 1 ; Will be adjusted to zero later
|
|---|
| 149 | pop ds
|
|---|
| 150 | .DoNotSetInterruptInServiceFlag:
|
|---|
| 151 | %endif
|
|---|
| 152 | OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER DEVICE_CONTROL_REGISTER_out
|
|---|
| 153 |
|
|---|
| 154 | ; Output Feature Number
|
|---|
| 155 | mov al, [bp+IDEPACK.bFeatures]
|
|---|
| 156 | OUTPUT_AL_TO_IDE_REGISTER FEATURES_REGISTER_out
|
|---|
| 157 |
|
|---|
| 158 | ; Output Sector Address High (only used by LBA48)
|
|---|
| 159 | %ifdef MODULE_EBIOS
|
|---|
| 160 | eMOVZX ax, [bp+IDEPACK.bLbaLowExt] ; Zero sector count
|
|---|
| 161 | mov cx, [bp+IDEPACK.wLbaMiddleAndHighExt]
|
|---|
| 162 | call OutputSectorCountAndAddress
|
|---|
| 163 | %endif
|
|---|
| 164 |
|
|---|
| 165 | ; Output Sector Address Low
|
|---|
| 166 | mov ax, [bp+IDEPACK.wSectorCountAndLbaLow]
|
|---|
| 167 | mov cx, [bp+IDEPACK.wLbaMiddleAndHigh]
|
|---|
| 168 | call OutputSectorCountAndAddress
|
|---|
| 169 |
|
|---|
| 170 | ; Output command
|
|---|
| 171 | mov al, [bp+IDEPACK.bCommand]
|
|---|
| 172 | OUTPUT_AL_TO_IDE_REGISTER COMMAND_REGISTER_out
|
|---|
| 173 |
|
|---|
| 174 | ; Wait until command completed
|
|---|
| 175 | pop bx ; Pop status and timeout for polling
|
|---|
| 176 | cmp bl, FLG_STATUS_DRQ ; Data transfer started?
|
|---|
| 177 | jne SHORT .WaitUntilNonTransferCommandCompletes
|
|---|
| 178 | %ifdef MODULE_8BIT_IDE_ADVANCED
|
|---|
| 179 | cmp BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_JRIDE_ISA
|
|---|
| 180 | jae SHORT JrIdeTransfer_StartWithCommandInAL ; DEVICE_8BIT_JRIDE_ISA or DEVICE_8BIT_ADP50L
|
|---|
| 181 | %endif
|
|---|
| 182 | jmp IdeTransfer_StartWithCommandInAL
|
|---|
| 183 |
|
|---|
| 184 | .WaitUntilNonTransferCommandCompletes:
|
|---|
| 185 | %ifdef MODULE_IRQ
|
|---|
| 186 | test BYTE [bp+IDEPACK.bDeviceControl], FLG_DEVCONTROL_nIEN
|
|---|
| 187 | jz SHORT .PollStatusFlagInsteadOfWaitIrq
|
|---|
| 188 | jmp IdeWait_IRQorStatusFlagInBLwithTimeoutInBH
|
|---|
| 189 | .PollStatusFlagInsteadOfWaitIrq:
|
|---|
| 190 | %endif
|
|---|
| 191 | jmp IdeWait_PollStatusFlagInBLwithTimeoutInBH
|
|---|
| 192 |
|
|---|
| 193 | .DriveNotReady:
|
|---|
| 194 | pop bx ; Clean stack
|
|---|
| 195 | ret
|
|---|
| 196 |
|
|---|
| 197 |
|
|---|
| 198 | ;--------------------------------------------------------------------
|
|---|
| 199 | ; IdeCommand_SelectDrive
|
|---|
| 200 | ; Parameters:
|
|---|
| 201 | ; DS:DI: Ptr to DPT (in RAMVARS segment)
|
|---|
| 202 | ; SS:BP: Ptr to IDEPACK
|
|---|
| 203 | ; Returns:
|
|---|
| 204 | ; AH: INT 13h Error Code
|
|---|
| 205 | ; CF: Cleared if success, Set if error
|
|---|
| 206 | ; Corrupts registers:
|
|---|
| 207 | ; AL, BX, CX, DX
|
|---|
| 208 | ;--------------------------------------------------------------------
|
|---|
| 209 | ALIGN JUMP_ALIGN
|
|---|
| 210 | IdeCommand_SelectDrive:
|
|---|
| 211 | ; We use different timeout value when detecting drives.
|
|---|
| 212 | ; This prevents unnecessary long delays when drive is not present.
|
|---|
| 213 | mov cx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRDY, FLG_STATUS_DRDY)
|
|---|
| 214 | cmp WORD [RAMVARS.wDrvDetectSignature], RAMVARS_DRV_DETECT_SIGNATURE
|
|---|
| 215 | eCMOVE ch, TIMEOUT_SELECT_DRIVE_DURING_DRIVE_DETECTION
|
|---|
| 216 |
|
|---|
| 217 | ; Select Master or Slave Drive
|
|---|
| 218 | mov al, [bp+IDEPACK.bDrvAndHead]
|
|---|
| 219 | OUTPUT_AL_TO_IDE_REGISTER DRIVE_AND_HEAD_SELECT_REGISTER
|
|---|
| 220 | mov bx, cx
|
|---|
| 221 | call IdeWait_PollStatusFlagInBLwithTimeoutInBH
|
|---|
| 222 |
|
|---|
| 223 | ; Ignore errors from IDE Error Register (set by previous command)
|
|---|
| 224 | cmp ah, RET_HD_TIMEOUT
|
|---|
| 225 | je SHORT .FailedToSelectDrive
|
|---|
| 226 | xor ax, ax ; Always success unless timeout
|
|---|
| 227 | ret
|
|---|
| 228 | .FailedToSelectDrive:
|
|---|
| 229 | stc
|
|---|
| 230 | ret
|
|---|
| 231 |
|
|---|
| 232 |
|
|---|
| 233 | ;--------------------------------------------------------------------
|
|---|
| 234 | ; OutputSectorCountAndAddress
|
|---|
| 235 | ; Parameters:
|
|---|
| 236 | ; AH: LBA low bits (Sector Number)
|
|---|
| 237 | ; AL: Sector Count
|
|---|
| 238 | ; CL: LBA middle bits (Cylinder Number low)
|
|---|
| 239 | ; CH: LBA high bits (Cylinder Number high)
|
|---|
| 240 | ; DS:DI: Ptr to DPT (in RAMVARS segment)
|
|---|
| 241 | ; Returns:
|
|---|
| 242 | ; Nothing
|
|---|
| 243 | ; Corrupts registers:
|
|---|
| 244 | ; AL, BX, DX
|
|---|
| 245 | ;--------------------------------------------------------------------
|
|---|
| 246 | ALIGN JUMP_ALIGN
|
|---|
| 247 | OutputSectorCountAndAddress:
|
|---|
| 248 | OUTPUT_AL_TO_IDE_REGISTER SECTOR_COUNT_REGISTER
|
|---|
| 249 |
|
|---|
| 250 | mov al, ah
|
|---|
| 251 | OUTPUT_AL_TO_IDE_REGISTER LBA_LOW_REGISTER
|
|---|
| 252 |
|
|---|
| 253 | mov al, cl
|
|---|
| 254 | OUTPUT_AL_TO_IDE_REGISTER LBA_MIDDLE_REGISTER
|
|---|
| 255 |
|
|---|
| 256 | mov al, ch
|
|---|
| 257 | OUTPUT_AL_TO_IDE_REGISTER LBA_HIGH_REGISTER
|
|---|
| 258 | ret
|
|---|
