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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