1 | ; Project name : XTIDE Universal BIOS |
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2 | ; Description : Command and port direction functions for different device types. |
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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 | %macro TEST_USIGN_DPT_AND_JUMP_IF_SERIAL_DEVICE 1 |
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9 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE |
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10 | jnz SHORT %1 |
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11 | %endmacro |
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12 | |
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13 | %macro CMP_USING_DPT_AND_JUMP_IF_JRIDE_DEVICE 1 |
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14 | xchg ax, bx |
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15 | eMOVZX bx, [di+DPT.bIdevarsOffset] |
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16 | cmp BYTE [cs:bx+IDEVARS.bDevice], DEVICE_JRIDE_ISA |
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17 | xchg bx, ax ; Restore BX |
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18 | je SHORT %1 |
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19 | %endmacro |
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20 | |
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21 | %macro CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF 2 |
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22 | cmp BYTE [cs:bp+IDEVARS.bDevice], %1 |
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23 | je SHORT %2 |
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24 | %endmacro |
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25 | |
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26 | |
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27 | |
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28 | ;-------------------------------------------------------------------- |
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29 | ; Device_FinalizeDPT |
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30 | ; Parameters: |
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31 | ; DS:DI: Ptr to Disk Parameter Table |
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32 | ; ES:SI: Ptr to 512-byte ATA information read from the drive |
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33 | ; CS:BP: Ptr to IDEVARS for the controller |
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34 | ; Returns: |
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35 | ; Nothing |
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36 | ; Corrupts registers: |
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37 | ; AX, BX, CX, DX |
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38 | ;-------------------------------------------------------------------- |
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39 | %ifdef MODULE_SERIAL |
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40 | Device_FinalizeDPT: |
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41 | ; needs to check IDEVARS vs. checking the DPT as the serial bit in the DPT is set in the Finalize routine |
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42 | CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF DEVICE_SERIAL_PORT, .FinalizeDptForSerialPortDevice |
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43 | jmp IdeDPT_Finalize |
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44 | .FinalizeDptForSerialPortDevice: |
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45 | jmp SerialDPT_Finalize |
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46 | |
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47 | %else ; IDE or JR-IDE/ISA |
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48 | Device_FinalizeDPT EQU IdeDPT_Finalize |
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49 | %endif |
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50 | |
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51 | |
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52 | ;-------------------------------------------------------------------- |
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53 | ; Device_ResetMasterAndSlaveController |
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54 | ; Parameters: |
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55 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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56 | ; Returns: |
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57 | ; AH: INT 13h Error Code |
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58 | ; CF: Cleared if success, Set if error |
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59 | ; Corrupts registers: |
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60 | ; AL, BX, CX, DX |
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61 | ;-------------------------------------------------------------------- |
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62 | %ifdef MODULE_JRIDE |
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63 | %ifdef MODULE_SERIAL ; IDE + JR-IDE/ISA + Serial |
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64 | Device_ResetMasterAndSlaveController: |
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65 | TEST_USIGN_DPT_AND_JUMP_IF_SERIAL_DEVICE ReturnSuccessForSerialPort |
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66 | CMP_USING_DPT_AND_JUMP_IF_JRIDE_DEVICE .ResetJrIDE |
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67 | jmp IdeCommand_ResetMasterAndSlaveController |
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68 | |
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69 | %else ; IDE + JR-IDE/ISA |
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70 | Device_ResetMasterAndSlaveController: |
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71 | CMP_USING_DPT_AND_JUMP_IF_JRIDE_DEVICE .ResetJrIDE |
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72 | jmp IdeCommand_ResetMasterAndSlaveController |
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73 | %endif |
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74 | |
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75 | %elifdef MODULE_SERIAL ; IDE + Serial |
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76 | Device_ResetMasterAndSlaveController: |
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77 | TEST_USIGN_DPT_AND_JUMP_IF_SERIAL_DEVICE ReturnSuccessForSerialPort |
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78 | jmp IdeCommand_ResetMasterAndSlaveController |
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79 | |
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80 | %else ; IDE |
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81 | Device_ResetMasterAndSlaveController EQU IdeCommand_ResetMasterAndSlaveController |
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82 | %endif |
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83 | |
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84 | %ifdef MODULE_JRIDE |
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85 | .ResetJrIDE: |
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86 | jmp MemIdeCommand_ResetMasterAndSlaveController |
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87 | %endif |
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88 | |
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89 | |
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90 | ;-------------------------------------------------------------------- |
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91 | ; Device_IdentifyToBufferInESSIwithDriveSelectByteInBH |
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92 | ; Parameters: |
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93 | ; BH: Drive Select byte for Drive and Head Select Register |
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94 | ; DS: Segment to RAMVARS |
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95 | ; ES:SI: Ptr to normalized buffer to receive 512-byte IDE Information |
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96 | ; CS:BP: Ptr to IDEVARS |
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97 | ; Returns: |
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98 | ; AH: INT 13h Error Code |
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99 | ; CF: Cleared if success, Set if error |
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100 | ; Corrupts registers: |
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101 | ; AL, BL, CX, DX, SI, DI, ES |
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102 | ;-------------------------------------------------------------------- |
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103 | %ifdef MODULE_JRIDE |
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104 | %ifdef MODULE_SERIAL ; IDE + JR-IDE/ISA + Serial |
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105 | Device_IdentifyToBufferInESSIwithDriveSelectByteInBH: |
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106 | CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF DEVICE_SERIAL_PORT, .IdentifyDriveFromSerialPort |
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107 | CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF DEVICE_JRIDE_ISA, .IdentifyDriveFromJrIde |
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108 | jmp IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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109 | |
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110 | %else ; IDE + JR-IDE/ISA |
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111 | Device_IdentifyToBufferInESSIwithDriveSelectByteInBH: |
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112 | CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF DEVICE_JRIDE_ISA, .IdentifyDriveFromJrIde |
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113 | jmp IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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114 | %endif |
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115 | |
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116 | %elifdef MODULE_SERIAL ; IDE + Serial |
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117 | Device_IdentifyToBufferInESSIwithDriveSelectByteInBH: |
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118 | CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF DEVICE_SERIAL_PORT, .IdentifyDriveFromSerialPort |
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119 | jmp IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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120 | |
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121 | %else ; IDE |
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122 | Device_IdentifyToBufferInESSIwithDriveSelectByteInBH EQU IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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123 | %endif |
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124 | |
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125 | %ifdef MODULE_JRIDE |
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126 | .IdentifyDriveFromJrIde: |
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127 | jmp MemIdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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128 | %endif |
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129 | |
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130 | %ifdef MODULE_SERIAL |
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131 | .IdentifyDriveFromSerialPort: |
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132 | jmp SerialCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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133 | %endif |
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134 | |
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135 | |
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136 | ;-------------------------------------------------------------------- |
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137 | ; Device_OutputCommandWithParameters |
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138 | ; Parameters: |
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139 | ; BH: Default system timer ticks for timeout (can be ignored) |
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140 | ; BL: IDE Status Register bit to poll after command |
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141 | ; ES:SI: Ptr to normalized buffer (for data transfer commands) |
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142 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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143 | ; SS:BP: Ptr to IDEPACK |
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144 | ; Returns: |
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145 | ; AH: INT 13h Error Code |
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146 | ; CX: Number of successfully transferred sectors (for transfer commands) |
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147 | ; CF: Cleared if success, Set if error |
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148 | ; Corrupts registers: |
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149 | ; AL, BX, (CX), DX, (ES:SI for data transfer commands) |
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150 | ;-------------------------------------------------------------------- |
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151 | %ifdef MODULE_JRIDE |
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152 | %ifdef MODULE_SERIAL ; IDE + JR-IDE/ISA + Serial |
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153 | Device_OutputCommandWithParameters: |
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154 | TEST_USIGN_DPT_AND_JUMP_IF_SERIAL_DEVICE .OutputCommandToSerialPort |
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155 | CMP_USING_DPT_AND_JUMP_IF_JRIDE_DEVICE .OutputCommandToJrIDE |
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156 | jmp IdeCommand_OutputWithParameters |
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157 | |
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158 | %else ; IDE + JR-IDE/ISA |
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159 | Device_OutputCommandWithParameters: |
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160 | CMP_USING_DPT_AND_JUMP_IF_JRIDE_DEVICE .OutputCommandToJrIDE |
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161 | jmp IdeCommand_OutputWithParameters |
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162 | %endif |
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163 | |
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164 | %elifdef MODULE_SERIAL ; IDE + Serial |
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165 | Device_OutputCommandWithParameters: |
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166 | TEST_USIGN_DPT_AND_JUMP_IF_SERIAL_DEVICE .OutputCommandToSerialPort |
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167 | jmp IdeCommand_OutputWithParameters |
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168 | |
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169 | %else ; IDE |
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170 | Device_OutputCommandWithParameters EQU IdeCommand_OutputWithParameters |
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171 | %endif |
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172 | |
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173 | %ifdef MODULE_JRIDE |
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174 | ALIGN JUMP_ALIGN |
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175 | .OutputCommandToJrIDE: |
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176 | jmp MemIdeCommand_OutputWithParameters |
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177 | %endif |
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178 | |
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179 | %ifdef MODULE_SERIAL |
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180 | ALIGN JUMP_ALIGN |
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181 | .OutputCommandToSerialPort: |
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182 | jmp SerialCommand_OutputWithParameters |
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183 | %endif |
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184 | |
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185 | |
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186 | ;-------------------------------------------------------------------- |
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187 | ; Device_SelectDrive |
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188 | ; Parameters: |
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189 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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190 | ; SS:BP: Ptr to IDEPACK |
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191 | ; Returns: |
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192 | ; AH: INT 13h Error Code |
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193 | ; CF: Cleared if success, Set if error |
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194 | ; Corrupts registers: |
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195 | ; AL, BX, CX, DX |
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196 | ;-------------------------------------------------------------------- |
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197 | %ifdef MODULE_JRIDE |
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198 | %ifdef MODULE_SERIAL ; IDE + JR-IDE/ISA + Serial |
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199 | Device_SelectDrive: |
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200 | TEST_USIGN_DPT_AND_JUMP_IF_SERIAL_DEVICE ReturnSuccessForSerialPort |
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201 | CMP_USING_DPT_AND_JUMP_IF_JRIDE_DEVICE .SelectJrIdeDrive |
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202 | jmp IdeCommand_SelectDrive |
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203 | |
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204 | %else ; IDE + JR-IDE/ISA |
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205 | Device_SelectDrive: |
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206 | CMP_USING_DPT_AND_JUMP_IF_JRIDE_DEVICE .SelectJrIdeDrive |
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207 | jmp IdeCommand_SelectDrive |
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208 | %endif |
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209 | |
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210 | %elifdef MODULE_SERIAL ; IDE + Serial |
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211 | Device_SelectDrive: |
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212 | TEST_USIGN_DPT_AND_JUMP_IF_SERIAL_DEVICE ReturnSuccessForSerialPort |
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213 | jmp IdeCommand_SelectDrive |
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214 | |
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215 | %else ; IDE |
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216 | Device_SelectDrive EQU IdeCommand_SelectDrive |
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217 | %endif |
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218 | |
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219 | %ifdef MODULE_JRIDE |
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220 | ALIGN JUMP_ALIGN |
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221 | .SelectJrIdeDrive: |
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222 | jmp MemIdeCommand_SelectDrive |
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223 | %endif |
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224 | |
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225 | %ifdef MODULE_SERIAL |
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226 | ALIGN JUMP_ALIGN |
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227 | ReturnSuccessForSerialPort: |
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228 | xor ax, ax |
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229 | ret |
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230 | %endif |
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