| [150] | 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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| [160] | 12 | ; CS:BP: Ptr to IDEVARS for the controller
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| [150] | 13 | ; Returns:
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| [258] | 14 | ; CF: Clear, IDE interface only supports hard disks
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| [150] | 15 | ; Corrupts registers:
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| [363] | 16 | ; AX, BX, CX, DX
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| [150] | 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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| [160] | 25 | ; CS:BP: Ptr to IDEVARS for the controller
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| [150] | 26 | ; Returns:
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| 27 | ; Nothing
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| 28 | ; Corrupts registers:
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| [242] | 29 | ; AX
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| [150] | 30 | ;--------------------------------------------------------------------
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| 31 | .StoreBlockMode:
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| [365] | 32 | mov BYTE [di+DPT_ATA.bBlockSize], 1
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| [150] | 33 |
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| [363] | 34 | %ifdef MODULE_ADVANCED_ATA
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| [160] | 35 | ;--------------------------------------------------------------------
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| [363] | 36 | ; .StoreDeviceType
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| 37 | ; Parameters:
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| 38 | ; DS:DI: Ptr to Disk Parameter Table
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| 39 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 40 | ; CS:BP: Ptr to IDEVARS for the controller
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| 41 | ; Returns:
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| 42 | ; Nothing
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| 43 | ; Corrupts registers:
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| 44 | ; Nothing
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| 45 | ;--------------------------------------------------------------------
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| 46 | .StoreDeviceType:
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| 47 | call IdeDPT_StoreDeviceTypeFromIdevarsInCSBPtoDPTinDSDI
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| 48 |
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| 49 | ;--------------------------------------------------------------------
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| 50 | ; .StorePioModeAndTimings
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| 51 | ; Parameters:
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| 52 | ; DS:DI: Ptr to Disk Parameter Table
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| 53 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 54 | ; CS:BP: Ptr to IDEVARS for the controller
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| 55 | ; Returns:
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| 56 | ; Nothing
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| 57 | ; Corrupts registers:
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| [364] | 58 | ; AX, BX, CX
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| [363] | 59 | ;--------------------------------------------------------------------
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| 60 | .StorePioMode:
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| [364] | 61 | call AtaID_GetMaxPioModeToAXandMinCycleTimeToCX
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| 62 | mov [di+DPT_ADVANCED_ATA.wMinPioCycleTime], cx
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| 63 | mov [di+DPT_ADVANCED_ATA.bPioMode], al
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| 64 | or [di+DPT.bFlagsHigh], ah
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| [363] | 65 |
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| 66 | ;--------------------------------------------------------------------
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| 67 | ; .DetectAdvancedIdeController
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| 68 | ; Parameters:
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| 69 | ; DS:DI: Ptr to Disk Parameter Table
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| 70 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 71 | ; CS:BP: Ptr to IDEVARS for the controller
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| 72 | ; Returns:
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| 73 | ; Nothing
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| 74 | ; Corrupts registers:
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| 75 | ; AX, BX, CX, DX
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| 76 | ;--------------------------------------------------------------------
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| 77 | .DetectAdvancedIdeController:
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| [364] | 78 | call AccessDPT_GetIdeBasePortToBX
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| 79 | call AdvAtaInit_DetectControllerForIdeBaseInBX
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| [363] | 80 | mov [di+DPT_ADVANCED_ATA.wControllerID], ax ; Store zero if none detected
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| [364] | 81 | mov [di+DPT_ADVANCED_ATA.wControllerBasePort], dx
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| [363] | 82 | jnc SHORT .NoAdvancedControllerDetected
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| 83 |
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| 84 | ; Use highest common PIO mode from controller and drive.
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| 85 | ; Many VLB controllers support PIO modes up to 2.
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| 86 | call AdvAtaInit_GetControllerMaxPioModeToAL
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| 87 | jnc SHORT .ChangeTo32bitDevice
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| [364] | 88 | and BYTE [di+DPT.bFlagsHigh], ~FLGH_DPT_IORDY ; No IORDY supported if need to limit
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| 89 | MIN_U [di+DPT_ADVANCED_ATA.bPioMode], al
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| [363] | 90 |
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| 91 | ; We have detected 32-bit controller so change Device Type since
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| 92 | ; it might have been set to 16-bit on IDEVARS
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| 93 | .ChangeTo32bitDevice:
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| [364] | 94 | mov BYTE [di+DPT_ADVANCED_ATA.bDevice], DEVICE_32BIT_ATA
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| [363] | 95 |
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| 96 | .NoAdvancedControllerDetected:
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| 97 |
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| 98 | %endif ; MODULE_ADVANCED_ATA
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| 99 |
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| 100 | ;--------------------------------------------------------------------
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| [160] | 101 | ; IdeDPT_StoreReversedAddressLinesFlagIfNecessary
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| 102 | ; Parameters:
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| 103 | ; DS:DI: Ptr to Disk Parameter Table
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| 104 | ; CS:BP: Ptr to IDEVARS for the controller
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| 105 | ; Returns:
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| [363] | 106 | ; CF: Always clear
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| [160] | 107 | ; Corrupts registers:
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| 108 | ; Nothing
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| 109 | ;--------------------------------------------------------------------
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| 110 | IdeDPT_StoreReversedAddressLinesFlagIfNecessary:
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| [361] | 111 | cmp BYTE [cs:bp+IDEVARS.bDevice], DEVICE_XTIDE_REV2
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| 112 | je SHORT .SetFlagForSwappedA0andA3
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| 113 | cmp BYTE [cs:bp+IDEVARS.bDevice], DEVICE_FAST_XTIDE
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| [160] | 114 | jne SHORT .EndDPT
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| [361] | 115 | .SetFlagForSwappedA0andA3:
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| [160] | 116 | or BYTE [di+DPT.bFlagsHigh], FLGH_DPT_REVERSED_A0_AND_A3
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| [150] | 117 | .EndDPT:
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| [258] | 118 | clc
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| [150] | 119 | ret
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| [363] | 120 |
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| 121 |
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| 122 | %ifdef MODULE_ADVANCED_ATA
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| 123 | ;--------------------------------------------------------------------
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| 124 | ; IdeDPT_StoreDeviceTypeFromIdevarsInCSBPtoDPTinDSDI
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| 125 | ; Parameters:
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| 126 | ; DS:DI: Ptr to Disk Parameter Table
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| 127 | ; CS:BP: Ptr to IDEVARS for the controller
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| 128 | ; Returns:
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| 129 | ; Nothing
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| 130 | ; Corrupts registers:
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| 131 | ; AL
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| 132 | ;--------------------------------------------------------------------
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| 133 | IdeDPT_StoreDeviceTypeFromIdevarsInCSBPtoDPTinDSDI:
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| 134 | mov al, [cs:bp+IDEVARS.bDevice]
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| [364] | 135 | mov [di+DPT_ADVANCED_ATA.bDevice], al
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| [363] | 136 | ret
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| [364] | 137 |
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| [363] | 138 | %endif
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