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 | ; Device_FinalizeDPT |
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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 | ; Nothing |
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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 | %ifdef MODULE_SERIAL |
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19 | Device_FinalizeDPT: |
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20 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE |
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21 | jnz SHORT .FinalizeDptForSerialPortDevice |
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22 | jmp IdeDPT_Finalize |
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23 | |
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24 | .FinalizeDptForSerialPortDevice: |
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25 | jmp SerialDPT_Finalize |
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26 | %else |
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27 | Device_FinalizeDPT EQU IdeDPT_Finalize |
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28 | %endif |
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29 | |
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30 | |
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31 | ;-------------------------------------------------------------------- |
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32 | ; Device_ResetMasterAndSlaveController |
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33 | ; Parameters: |
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34 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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35 | ; Returns: |
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36 | ; AH: INT 13h Error Code |
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37 | ; CF: Cleared if success, Set if error |
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38 | ; Corrupts registers: |
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39 | ; AL, BX, CX, DX |
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40 | ;-------------------------------------------------------------------- |
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41 | %ifdef MODULE_SERIAL |
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42 | Device_ResetMasterAndSlaveController: |
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43 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE |
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44 | jnz SHORT ReturnSuccessForSerialPort |
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45 | jmp IdeCommand_ResetMasterAndSlaveController |
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46 | %else |
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47 | Device_ResetMasterAndSlaveController EQU IdeCommand_ResetMasterAndSlaveController |
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48 | %endif |
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49 | |
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50 | |
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51 | ;-------------------------------------------------------------------- |
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52 | ; Device_IdentifyToBufferInESSIwithDriveSelectByteInBH |
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53 | ; Parameters: |
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54 | ; BH: Drive Select byte for Drive and Head Select Register |
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55 | ; DS: Segment to RAMVARS |
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56 | ; ES:SI: Ptr to buffer to receive 512-byte IDE Information |
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57 | ; CS:BP: Ptr to IDEVARS |
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58 | ; Returns: |
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59 | ; AH: INT 13h Error Code |
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60 | ; CF: Cleared if success, Set if error |
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61 | ; Corrupts registers: |
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62 | ; AL, BL, CX, DX, SI, DI, ES |
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63 | ;-------------------------------------------------------------------- |
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64 | %ifdef MODULE_SERIAL |
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65 | Device_IdentifyToBufferInESSIwithDriveSelectByteInBH: |
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66 | cmp BYTE [cs:bp+IDEVARS.bDevice], DEVICE_SERIAL_PORT |
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67 | je SHORT .IdentifyDriveFromSerialPort |
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68 | jmp IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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69 | |
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70 | .IdentifyDriveFromSerialPort: |
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71 | jmp SerialCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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72 | %else |
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73 | Device_IdentifyToBufferInESSIwithDriveSelectByteInBH EQU IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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74 | %endif |
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75 | |
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76 | |
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77 | ;-------------------------------------------------------------------- |
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78 | ; Device_OutputCommandWithParameters |
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79 | ; Parameters: |
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80 | ; BH: Default system timer ticks for timeout (can be ignored) |
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81 | ; BL: IDE Status Register bit to poll after command |
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82 | ; ES:SI: Ptr to buffer (for data transfer commands) |
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83 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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84 | ; SS:BP: Ptr to IDEPACK |
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85 | ; Returns: |
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86 | ; AH: INT 13h Error Code |
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87 | ; CF: Cleared if success, Set if error |
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88 | ; Corrupts registers: |
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89 | ; AL, BX, CX, DX, (ES:SI for data transfer commands) |
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90 | ;-------------------------------------------------------------------- |
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91 | %ifdef MODULE_SERIAL |
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92 | ALIGN JUMP_ALIGN |
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93 | Device_OutputCommandWithParameters: |
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94 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE |
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95 | jnz SHORT .OutputCommandToSerialPort |
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96 | jmp IdeCommand_OutputWithParameters |
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97 | |
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98 | ALIGN JUMP_ALIGN |
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99 | .OutputCommandToSerialPort: |
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100 | jmp SerialCommand_OutputWithParameters |
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101 | %else |
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102 | Device_OutputCommandWithParameters EQU IdeCommand_OutputWithParameters |
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103 | %endif |
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104 | |
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105 | |
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106 | ;-------------------------------------------------------------------- |
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107 | ; Device_SelectDrive |
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108 | ; Parameters: |
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109 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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110 | ; SS:BP: Ptr to IDEPACK |
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111 | ; Returns: |
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112 | ; AH: INT 13h Error Code |
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113 | ; CF: Cleared if success, Set if error |
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114 | ; Corrupts registers: |
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115 | ; AL, BX, CX, DX |
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116 | ;-------------------------------------------------------------------- |
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117 | %ifdef MODULE_SERIAL |
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118 | ALIGN JUMP_ALIGN |
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119 | Device_SelectDrive: |
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120 | test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE |
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121 | jnz SHORT ReturnSuccessForSerialPort |
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122 | jmp IdeCommand_SelectDrive |
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123 | |
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124 | ReturnSuccessForSerialPort: |
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125 | xor ax, ax |
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126 | ret |
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127 | %else |
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128 | Device_SelectDrive EQU IdeCommand_SelectDrive |
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129 | %endif |
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130 | |
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