[150] | 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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[376] | 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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[150] | 20 | ; Section containing code |
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| 21 | SECTION .text |
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| 22 | |
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[238] | 23 | |
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[294] | 24 | %macro TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE 1 |
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[238] | 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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[150] | 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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[160] | 41 | ; CS:BP: Ptr to IDEVARS for the controller |
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[150] | 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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[400] | 47 | %ifdef MODULE_SERIAL ; IDE + Serial |
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[150] | 48 | Device_FinalizeDPT: |
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[258] | 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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[400] | 50 | CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF DEVICE_SERIAL_PORT, .FinalizeDptForSerialPortDevice |
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[150] | 51 | jmp IdeDPT_Finalize |
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[294] | 52 | .FinalizeDptForSerialPortDevice: |
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[181] | 53 | jmp SerialDPT_Finalize |
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[238] | 54 | |
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[400] | 55 | %else ; IDE |
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| 56 | Device_FinalizeDPT EQU IdeDPT_Finalize |
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[175] | 57 | %endif |
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[150] | 58 | |
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[181] | 59 | |
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[150] | 60 | ;-------------------------------------------------------------------- |
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| 61 | ; Device_IdentifyToBufferInESSIwithDriveSelectByteInBH |
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| 62 | ; Parameters: |
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| 63 | ; BH: Drive Select byte for Drive and Head Select Register |
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[473] | 64 | ; DX: Autodetected port (for devices that support autodetection) |
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[150] | 65 | ; DS: Segment to RAMVARS |
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[480] | 66 | ; ES:SI: Ptr to buffer to receive 512-byte IDE Information |
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[150] | 67 | ; CS:BP: Ptr to IDEVARS |
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| 68 | ; Returns: |
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| 69 | ; AH: INT 13h Error Code |
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| 70 | ; CF: Cleared if success, Set if error |
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| 71 | ; Corrupts registers: |
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[443] | 72 | ; AL, BX, CX, DX, SI, DI, ES |
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[150] | 73 | ;-------------------------------------------------------------------- |
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[400] | 74 | %ifdef MODULE_SERIAL ; IDE + Serial |
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[150] | 75 | Device_IdentifyToBufferInESSIwithDriveSelectByteInBH: |
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[400] | 76 | CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF DEVICE_SERIAL_PORT, .IdentifyDriveFromSerialPort |
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[150] | 77 | jmp IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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| 78 | .IdentifyDriveFromSerialPort: |
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| 79 | jmp SerialCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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[400] | 80 | |
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| 81 | %else ; IDE |
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| 82 | Device_IdentifyToBufferInESSIwithDriveSelectByteInBH EQU IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH |
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[175] | 83 | %endif |
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[150] | 84 | |
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[181] | 85 | |
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[150] | 86 | ;-------------------------------------------------------------------- |
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| 87 | ; Device_OutputCommandWithParameters |
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| 88 | ; Parameters: |
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| 89 | ; BH: Default system timer ticks for timeout (can be ignored) |
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| 90 | ; BL: IDE Status Register bit to poll after command |
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[480] | 91 | ; ES:SI: Ptr to buffer (for data transfer commands) |
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[150] | 92 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 93 | ; SS:BP: Ptr to IDEPACK |
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| 94 | ; Returns: |
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| 95 | ; AH: INT 13h Error Code |
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[249] | 96 | ; CX: Number of successfully transferred sectors (for transfer commands) |
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[150] | 97 | ; CF: Cleared if success, Set if error |
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| 98 | ; Corrupts registers: |
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[249] | 99 | ; AL, BX, (CX), DX, (ES:SI for data transfer commands) |
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[150] | 100 | ;-------------------------------------------------------------------- |
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[400] | 101 | %ifdef MODULE_SERIAL ; IDE + Serial |
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| 102 | ALIGN JUMP_ALIGN |
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[150] | 103 | Device_OutputCommandWithParameters: |
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[294] | 104 | TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE .OutputCommandToSerialPort |
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[150] | 105 | jmp IdeCommand_OutputWithParameters |
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[181] | 106 | |
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[150] | 107 | ALIGN JUMP_ALIGN |
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| 108 | .OutputCommandToSerialPort: |
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| 109 | jmp SerialCommand_OutputWithParameters |
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[400] | 110 | |
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| 111 | %else ; IDE |
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| 112 | Device_OutputCommandWithParameters EQU IdeCommand_OutputWithParameters |
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[175] | 113 | %endif |
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[150] | 114 | |
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[181] | 115 | |
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[150] | 116 | ;-------------------------------------------------------------------- |
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| 117 | ; Device_SelectDrive |
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| 118 | ; Parameters: |
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| 119 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 120 | ; SS:BP: Ptr to IDEPACK |
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| 121 | ; Returns: |
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| 122 | ; AH: INT 13h Error Code |
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| 123 | ; CF: Cleared if success, Set if error |
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| 124 | ; Corrupts registers: |
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| 125 | ; AL, BX, CX, DX |
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| 126 | ;-------------------------------------------------------------------- |
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[400] | 127 | %ifdef MODULE_SERIAL ; IDE + Serial |
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[150] | 128 | Device_SelectDrive: |
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[400] | 129 | TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE ReturnSuccessForSerialPort |
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[150] | 130 | jmp IdeCommand_SelectDrive |
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[181] | 131 | |
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[400] | 132 | %else ; IDE |
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| 133 | Device_SelectDrive EQU IdeCommand_SelectDrive |
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[238] | 134 | %endif |
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| 135 | |
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| 136 | |
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| 137 | %ifdef MODULE_SERIAL |
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| 138 | ALIGN JUMP_ALIGN |
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[150] | 139 | ReturnSuccessForSerialPort: |
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| 140 | xor ax, ax |
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| 141 | ret |
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[175] | 142 | %endif |
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