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 | ; |
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5 | ; XTIDE Universal BIOS and Associated Tools |
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6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team. |
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7 | ; |
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8 | ; This program is free software; you can redistribute it and/or modify |
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9 | ; it under the terms of the GNU General Public License as published by |
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10 | ; the Free Software Foundation; either version 2 of the License, or |
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11 | ; (at your option) any later version. |
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12 | ; |
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13 | ; This program is distributed in the hope that it will be useful, |
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14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | ; GNU General Public License for more details. |
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17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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18 | ; |
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19 | |
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20 | ; Section containing code |
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21 | SECTION .text |
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22 | |
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23 | |
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24 | %macro TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE 1 |
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25 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE |
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26 | jnz SHORT %1 |
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27 | %endmacro |
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28 | |
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29 | %macro CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF 2 |
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30 | cmp BYTE [cs:bp+IDEVARS.bDevice], %1 |
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31 | je SHORT %2 |
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32 | %endmacro |
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33 | |
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34 | |
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35 | |
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36 | ;-------------------------------------------------------------------- |
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37 | ; Device_FinalizeDPT |
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38 | ; Parameters: |
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39 | ; DS:DI: Ptr to Disk Parameter Table |
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40 | ; ES:SI: Ptr to 512-byte ATA information read from the drive |
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41 | ; CS:BP: Ptr to IDEVARS for the controller |
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42 | ; Returns: |
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43 | ; Nothing |
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44 | ; Corrupts registers: |
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45 | ; AX, BX, CX, DX |
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46 | ;-------------------------------------------------------------------- |
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47 | %ifdef MODULE_SERIAL ; IDE + Serial |
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48 | Device_FinalizeDPT: |
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49 | ; 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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50 | cmp BYTE [cs:bp+IDEVARS.bDevice], DEVICE_SERIAL_PORT |
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51 | %ifdef USE_386 |
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52 | jne IdeDPT_Finalize |
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53 | jmp SerialDPT_Finalize |
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54 | %else |
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55 | je SHORT .FinalizeDptForSerialPortDevice |
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56 | jmp IdeDPT_Finalize |
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57 | .FinalizeDptForSerialPortDevice: |
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58 | jmp SerialDPT_Finalize |
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59 | %endif |
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60 | |
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61 | %else ; IDE |
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62 | Device_FinalizeDPT EQU IdeDPT_Finalize |
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63 | %endif |
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64 | |
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65 | |
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66 | ;-------------------------------------------------------------------- |
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67 | ; Device_ResetMasterAndSlaveController |
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68 | ; Parameters: |
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69 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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70 | ; Returns: |
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71 | ; AH: INT 13h Error Code |
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72 | ; CF: Cleared if success, Set if error |
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73 | ; Corrupts registers: |
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74 | ; AL, BX, CX, DX |
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75 | ;-------------------------------------------------------------------- |
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76 | %ifdef MODULE_SERIAL ; IDE + Serial |
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77 | Device_ResetMasterAndSlaveController: |
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78 | TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE ReturnSuccessForSerialPort |
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79 | jmp IdeCommand_ResetMasterAndSlaveController |
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80 | |
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81 | %else ; IDE |
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82 | Device_ResetMasterAndSlaveController EQU IdeCommand_ResetMasterAndSlaveController |
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83 | %endif |
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84 | |
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85 | |
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86 | ;-------------------------------------------------------------------- |
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87 | ; Device_IdentifyToBufferInESSIwithDriveSelectByteInBH |
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88 | ; Parameters: |
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89 | ; BH: Drive Select byte for Drive and Head Select Register |
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90 | ; CX: XUB_INT13h_SIGNATURE to ignore illegal ATA-ID values, otherwise |
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91 | ; correct them (only used if NOT build with NO_ATAID_CORRECTION) |
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92 | ; DX: Autodetected port (for devices that support autodetection) |
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93 | ; DS: Segment to RAMVARS |
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94 | ; ES:SI: Ptr to buffer to receive 512-byte IDE Information |
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95 | ; CS:BP: Ptr to IDEVARS |
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96 | ; Returns: |
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97 | ; AH: INT 13h Error Code |
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98 | ; CF: Cleared if success, Set if error |
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99 | ; Corrupts registers: |
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100 | ; AL, BX, CX, DX, SI, DI, ES |
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101 | ;-------------------------------------------------------------------- |
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102 | Device_IdentifyToBufferInESSIwithDriveSelectByteInBH: |
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103 | %ifndef NO_ATAID_CORRECTION |
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104 | cmp cx, XUB_INT13h_SIGNATURE |
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105 | je SHORT .DoNotFixAtaInformation |
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106 | push es |
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107 | push si |
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108 | ePUSH_T cx, AtaID_PopESSIandFixIllegalValuesFromESSI ; Here we modify ATA information if necessary |
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109 | .DoNotFixAtaInformation: |
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110 | %endif |
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111 | |
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112 | %ifdef MODULE_SERIAL ; IDE + Serial |
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113 | cmp BYTE [cs:bp+IDEVARS.bDevice], DEVICE_SERIAL_PORT |
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114 | %ifdef USE_386 |
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115 | jne IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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116 | jmp SerialCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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117 | %else |
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118 | je SHORT .IdentifyDriveFromSerialPort |
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119 | jmp IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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120 | .IdentifyDriveFromSerialPort: |
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121 | jmp SerialCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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122 | %endif |
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123 | |
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124 | %else ; IDE |
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125 | jmp IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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126 | %endif |
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127 | |
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128 | |
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129 | ;-------------------------------------------------------------------- |
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130 | ; Device_OutputCommandWithParameters |
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131 | ; Parameters: |
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132 | ; BH: Default system timer ticks for timeout (can be ignored) |
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133 | ; BL: IDE Status Register bit to poll after command |
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134 | ; ES:SI: Ptr to buffer (for data transfer commands) |
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135 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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136 | ; SS:BP: Ptr to IDEPACK |
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137 | ; Returns: |
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138 | ; AH: INT 13h Error Code |
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139 | ; CX: Number of successfully transferred sectors (for transfer commands) |
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140 | ; CF: Cleared if success, Set if error |
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141 | ; Corrupts registers: |
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142 | ; AL, BX, (CX), DX, (ES:SI for data transfer commands) |
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143 | ;-------------------------------------------------------------------- |
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144 | %ifdef MODULE_SERIAL ; IDE + Serial |
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145 | ALIGN JUMP_ALIGN |
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146 | Device_OutputCommandWithParameters: |
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147 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE |
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148 | %ifdef USE_386 |
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149 | jz IdeCommand_OutputWithParameters |
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150 | jmp SerialCommand_OutputWithParameters |
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151 | %else |
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152 | jnz SHORT .OutputCommandToSerialPort |
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153 | jmp IdeCommand_OutputWithParameters |
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154 | |
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155 | ALIGN JUMP_ALIGN |
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156 | .OutputCommandToSerialPort: |
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157 | jmp SerialCommand_OutputWithParameters |
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158 | %endif |
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159 | |
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160 | %else ; IDE |
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161 | Device_OutputCommandWithParameters EQU IdeCommand_OutputWithParameters |
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162 | %endif |
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163 | |
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164 | |
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165 | ;-------------------------------------------------------------------- |
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166 | ; Device_ReadLBAlowRegisterToAL |
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167 | ; Returns LBA low register / Sector number register contents. |
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168 | ; Note that this returns valid value only after transfer command (read/write/verify) |
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169 | ; has stopped to an error. Do not call this otherwise. |
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170 | ; Parameters: |
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171 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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172 | ; Returns: |
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173 | ; AL: Byte read from the device register |
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174 | ; Corrupts registers: |
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175 | ; BX, DX |
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176 | ;-------------------------------------------------------------------- |
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177 | ;%ifdef MODULE_SERIAL ; IDE + Serial |
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178 | ;ALIGN JUMP_ALIGN |
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179 | ;Device_ReadLBAlowRegisterToAL: |
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180 | ; test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE |
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181 | ;%ifdef USE_386 |
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182 | ; jz IdeCommand_ReadLBAlowRegisterToAL |
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183 | ; jmp SerialCommand_ReadLBAlowRegisterToAL |
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184 | ;%else |
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185 | ; jnz SHORT .ReadFromSerialPort |
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186 | ; jmp IdeCommand_ReadLBAlowRegisterToAL |
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187 | |
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188 | ;ALIGN JUMP_ALIGN |
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189 | ;.ReadFromSerialPort: |
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190 | ; jmp SerialCommand_ReadLBAlowRegisterToAL |
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191 | ;%endif |
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192 | |
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193 | ;%else ; IDE only |
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194 | Device_ReadLBAlowRegisterToAL EQU IdeCommand_ReadLBAlowRegisterToAL |
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195 | ;%endif |
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196 | ; TODO: For now we simply assume serial device do not produce verify errors |
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197 | |
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198 | |
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199 | ;-------------------------------------------------------------------- |
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200 | ; Device_SelectDrive |
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201 | ; Parameters: |
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202 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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203 | ; SS:BP: Ptr to IDEPACK |
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204 | ; Returns: |
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205 | ; AH: INT 13h Error Code |
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206 | ; CF: Cleared if success, Set if error |
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207 | ; Corrupts registers: |
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208 | ; AL, BX, CX, DX |
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209 | ;-------------------------------------------------------------------- |
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210 | %ifdef MODULE_SERIAL ; IDE + Serial |
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211 | Device_SelectDrive: |
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212 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE |
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213 | %ifndef USE_386 |
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214 | jnz SHORT ReturnSuccessForSerialPort |
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215 | jmp IdeCommand_SelectDrive |
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216 | %else |
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217 | jz IdeCommand_SelectDrive |
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218 | ; Fall to ReturnSuccessForSerialPort |
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219 | %endif |
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220 | |
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221 | %else ; IDE |
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222 | Device_SelectDrive EQU IdeCommand_SelectDrive |
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223 | %endif |
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224 | |
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225 | |
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226 | %ifdef MODULE_SERIAL |
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227 | ALIGN JUMP_ALIGN |
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228 | ReturnSuccessForSerialPort: |
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229 | xor ax, ax |
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230 | ret |
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231 | %endif |
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