| 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 | ; Section containing code
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| 5 | SECTION .text
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| 6 |
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| 7 | ;--------------------------------------------------------------------
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| 8 | ; IdeDPT_Finalize
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| 9 | ; Parameters:
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| 10 | ; DS:DI: Ptr to Disk Parameter Table
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| 11 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 12 | ; CS:BP: Ptr to IDEVARS for the controller
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| 13 | ; Returns:
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| 14 | ; CF: Clear, IDE interface only supports hard disks
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| 15 | ; Corrupts registers:
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| 16 | ; AX, BX, CX, DX
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| 17 | ;--------------------------------------------------------------------
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| 18 | IdeDPT_Finalize:
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| 19 |
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| 20 | ;--------------------------------------------------------------------
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| 21 | ; .StoreBlockMode
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| 22 | ; Parameters:
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| 23 | ; DS:DI: Ptr to Disk Parameter Table
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| 24 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 25 | ; CS:BP: Ptr to IDEVARS for the controller
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| 26 | ; Returns:
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| 27 | ; Nothing
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| 28 | ; Corrupts registers:
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| 29 | ; AX
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| 30 | ;--------------------------------------------------------------------
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| 31 | .StoreBlockMode:
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| 32 | mov al, 1 ; Block mode will be enabled on AH=9h
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| 33 | mov ah, [es:si+ATA1.bBlckSize] ; Max block size in sectors
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| 34 | mov [di+DPT_ATA.wSetAndMaxBlock], ax
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| 35 |
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| 36 | %ifdef MODULE_ADVANCED_ATA
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| 37 | ;--------------------------------------------------------------------
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| 38 | ; .StoreDeviceType
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| 39 | ; Parameters:
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| 40 | ; DS:DI: Ptr to Disk Parameter Table
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| 41 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 42 | ; CS:BP: Ptr to IDEVARS for the controller
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| 43 | ; Returns:
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| 44 | ; Nothing
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| 45 | ; Corrupts registers:
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| 46 | ; Nothing
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| 47 | ;--------------------------------------------------------------------
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| 48 | .StoreDeviceType:
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| 49 | call IdeDPT_StoreDeviceTypeFromIdevarsInCSBPtoDPTinDSDI
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| 50 |
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| 51 | ;--------------------------------------------------------------------
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| 52 | ; .StorePioModeAndTimings
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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 | ; AX, BX, CX
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| 61 | ;--------------------------------------------------------------------
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| 62 | .StorePioMode:
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| 63 | call AtaID_GetMaxPioModeToAXandMinCycleTimeToCX
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| 64 | mov [di+DPT_ADVANCED_ATA.wMinPioCycleTime], cx
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| 65 | mov [di+DPT_ADVANCED_ATA.bPioMode], al
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| 66 | or [di+DPT.bFlagsHigh], ah
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| 67 |
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| 68 | ;--------------------------------------------------------------------
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| 69 | ; .DetectAdvancedIdeController
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| 70 | ; Parameters:
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| 71 | ; DS:DI: Ptr to Disk Parameter Table
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| 72 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 73 | ; CS:BP: Ptr to IDEVARS for the controller
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| 74 | ; Returns:
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| 75 | ; Nothing
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| 76 | ; Corrupts registers:
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| 77 | ; AX, BX, CX, DX
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| 78 | ;--------------------------------------------------------------------
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| 79 | .DetectAdvancedIdeController:
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| 80 | call AccessDPT_GetIdeBasePortToBX
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| 81 | call AdvAtaInit_DetectControllerForIdeBaseInBX
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| 82 | mov [di+DPT_ADVANCED_ATA.wControllerID], ax ; Store zero if none detected
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| 83 | mov [di+DPT_ADVANCED_ATA.wControllerBasePort], dx
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| 84 | jnc SHORT .NoAdvancedControllerDetected
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| 85 |
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| 86 | ; Use highest common PIO mode from controller and drive.
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| 87 | ; Many VLB controllers support PIO modes up to 2.
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| 88 | call AdvAtaInit_GetControllerMaxPioModeToAL
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| 89 | jnc SHORT .ChangeTo32bitDevice
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| 90 | and BYTE [di+DPT.bFlagsHigh], ~FLGH_DPT_IORDY ; No IORDY supported if need to limit
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| 91 | MIN_U [di+DPT_ADVANCED_ATA.bPioMode], al
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| 92 |
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| 93 | ; We have detected 32-bit controller so change Device Type since
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| 94 | ; it might have been set to 16-bit on IDEVARS
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| 95 | .ChangeTo32bitDevice:
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| 96 | mov BYTE [di+DPT_ADVANCED_ATA.bDevice], DEVICE_32BIT_ATA
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| 97 |
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| 98 | .NoAdvancedControllerDetected:
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| 99 |
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| 100 | %endif ; MODULE_ADVANCED_ATA
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| 101 |
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| 102 | ;--------------------------------------------------------------------
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| 103 | ; IdeDPT_StoreReversedAddressLinesFlagIfNecessary
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| 104 | ; Parameters:
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| 105 | ; DS:DI: Ptr to Disk Parameter Table
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| 106 | ; CS:BP: Ptr to IDEVARS for the controller
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| 107 | ; Returns:
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| 108 | ; CF: Always clear
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| 109 | ; Corrupts registers:
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| 110 | ; Nothing
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| 111 | ;--------------------------------------------------------------------
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| 112 | IdeDPT_StoreReversedAddressLinesFlagIfNecessary:
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| 113 | cmp BYTE [cs:bp+IDEVARS.bDevice], DEVICE_XTIDE_REV2
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| 114 | je SHORT .SetFlagForSwappedA0andA3
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| 115 | cmp BYTE [cs:bp+IDEVARS.bDevice], DEVICE_FAST_XTIDE
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| 116 | jne SHORT .EndDPT
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| 117 | .SetFlagForSwappedA0andA3:
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| 118 | or BYTE [di+DPT.bFlagsHigh], FLGH_DPT_REVERSED_A0_AND_A3
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| 119 | .EndDPT:
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| 120 | clc
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| 121 | ret
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| 122 |
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| 123 |
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| 124 | %ifdef MODULE_ADVANCED_ATA
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| 125 | ;--------------------------------------------------------------------
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| 126 | ; IdeDPT_StoreDeviceTypeFromIdevarsInCSBPtoDPTinDSDI
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| 127 | ; Parameters:
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| 128 | ; DS:DI: Ptr to Disk Parameter Table
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| 129 | ; CS:BP: Ptr to IDEVARS for the controller
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| 130 | ; Returns:
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| 131 | ; Nothing
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| 132 | ; Corrupts registers:
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| 133 | ; AL
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| 134 | ;--------------------------------------------------------------------
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| 135 | IdeDPT_StoreDeviceTypeFromIdevarsInCSBPtoDPTinDSDI:
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| 136 | mov al, [cs:bp+IDEVARS.bDevice]
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| 137 | mov [di+DPT_ADVANCED_ATA.bDevice], al
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| 138 | ret
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| 139 |
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| 140 | %endif
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