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, 2011-2012 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_USING_IDEVARS_IN_CSBP_AND_JUMP_IF DEVICE_SERIAL_PORT, .FinalizeDptForSerialPortDevice |
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51 | jmp IdeDPT_Finalize |
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52 | .FinalizeDptForSerialPortDevice: |
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53 | jmp SerialDPT_Finalize |
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54 | |
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55 | %else ; IDE |
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56 | Device_FinalizeDPT EQU IdeDPT_Finalize |
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57 | %endif |
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58 | |
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59 | |
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60 | ;-------------------------------------------------------------------- |
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61 | ; Device_ResetMasterAndSlaveController |
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62 | ; Parameters: |
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63 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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64 | ; Returns: |
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65 | ; AH: INT 13h Error Code |
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66 | ; CF: Cleared if success, Set if error |
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67 | ; Corrupts registers: |
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68 | ; AL, BX, CX, DX |
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69 | ;-------------------------------------------------------------------- |
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70 | %ifdef MODULE_SERIAL ; IDE + Serial |
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71 | Device_ResetMasterAndSlaveController: |
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72 | TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE ReturnSuccessForSerialPort |
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73 | jmp IdeCommand_ResetMasterAndSlaveController |
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74 | |
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75 | %else ; IDE |
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76 | Device_ResetMasterAndSlaveController EQU IdeCommand_ResetMasterAndSlaveController |
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77 | %endif |
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78 | |
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79 | |
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80 | ;-------------------------------------------------------------------- |
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81 | ; Device_IdentifyToBufferInESSIwithDriveSelectByteInBH |
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82 | ; Parameters: |
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83 | ; BH: Drive Select byte for Drive and Head Select Register |
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84 | ; DS: Segment to RAMVARS |
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85 | ; ES:SI: Ptr to normalized buffer to receive 512-byte IDE Information |
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86 | ; CS:BP: Ptr to IDEVARS |
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87 | ; Returns: |
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88 | ; AH: INT 13h Error Code |
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89 | ; CF: Cleared if success, Set if error |
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90 | ; Corrupts registers: |
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91 | ; AL, BL, CX, DX, SI, DI, ES |
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92 | ;-------------------------------------------------------------------- |
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93 | %ifdef MODULE_SERIAL ; IDE + Serial |
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94 | Device_IdentifyToBufferInESSIwithDriveSelectByteInBH: |
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95 | CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF DEVICE_SERIAL_PORT, .IdentifyDriveFromSerialPort |
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96 | jmp IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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97 | .IdentifyDriveFromSerialPort: |
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98 | jmp SerialCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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99 | |
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100 | %else ; IDE |
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101 | Device_IdentifyToBufferInESSIwithDriveSelectByteInBH EQU IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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102 | %endif |
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103 | |
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104 | |
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105 | ;-------------------------------------------------------------------- |
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106 | ; Device_OutputCommandWithParameters |
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107 | ; Parameters: |
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108 | ; BH: Default system timer ticks for timeout (can be ignored) |
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109 | ; BL: IDE Status Register bit to poll after command |
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110 | ; ES:SI: Ptr to normalized buffer (for data transfer commands) |
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111 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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112 | ; SS:BP: Ptr to IDEPACK |
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113 | ; Returns: |
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114 | ; AH: INT 13h Error Code |
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115 | ; CX: Number of successfully transferred sectors (for transfer commands) |
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116 | ; CF: Cleared if success, Set if error |
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117 | ; Corrupts registers: |
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118 | ; AL, BX, (CX), DX, (ES:SI for data transfer commands) |
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119 | ;-------------------------------------------------------------------- |
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120 | %ifdef MODULE_SERIAL ; IDE + Serial |
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121 | ALIGN JUMP_ALIGN |
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122 | Device_OutputCommandWithParameters: |
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123 | TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE .OutputCommandToSerialPort |
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124 | jmp IdeCommand_OutputWithParameters |
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125 | |
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126 | ALIGN JUMP_ALIGN |
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127 | .OutputCommandToSerialPort: |
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128 | jmp SerialCommand_OutputWithParameters |
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129 | |
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130 | %else ; IDE |
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131 | Device_OutputCommandWithParameters EQU IdeCommand_OutputWithParameters |
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132 | %endif |
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133 | |
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134 | |
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135 | ;-------------------------------------------------------------------- |
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136 | ; Device_SelectDrive |
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137 | ; Parameters: |
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138 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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139 | ; SS:BP: Ptr to IDEPACK |
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140 | ; Returns: |
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141 | ; AH: INT 13h Error Code |
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142 | ; CF: Cleared if success, Set if error |
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143 | ; Corrupts registers: |
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144 | ; AL, BX, CX, DX |
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145 | ;-------------------------------------------------------------------- |
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146 | %ifdef MODULE_SERIAL ; IDE + Serial |
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147 | Device_SelectDrive: |
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148 | TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE ReturnSuccessForSerialPort |
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149 | jmp IdeCommand_SelectDrive |
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150 | |
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151 | %else ; IDE |
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152 | Device_SelectDrive EQU IdeCommand_SelectDrive |
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153 | %endif |
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154 | |
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155 | |
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156 | %ifdef MODULE_SERIAL |
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157 | ALIGN JUMP_ALIGN |
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158 | ReturnSuccessForSerialPort: |
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159 | xor ax, ax |
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160 | ret |
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161 | %endif |
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