| 1 | ; Project name : XTIDE Universal BIOS |
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| 2 | ; Description : Macros for memory mapped ATA controllers. |
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| 3 | |
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| 4 | %ifndef MEM_MAPPED_IDE_INC |
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| 5 | %define MEM_MAPPED_IDE_INC |
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| 6 | |
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| 7 | JRIDE_SECTOR_ACCESS_WINDOW_OFFSET EQU 3C00h ; 512 byte IDE Sector Access Window |
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| 8 | JRIDE_COMMAND_BLOCK_REGISTER_WINDOW_OFFSET EQU 3E00h ; 8 byte CS0 IDE Register Window |
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| 9 | JRIDE_CONTROL_BLOCK_REGISTER_WINDOW_OFFSET EQU 3E08h ; 8 byte CS1 IDE Register Window |
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| 10 | JRIDE_SECTOR_ACCESS_WINDOW_SIZE EQU 512 ; 512 bytes |
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| 11 | |
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| 12 | |
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| 13 | |
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| 14 | ;-------------------------------------------------------------------- |
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| 15 | ; OUTPUT_AL_TO_IDE_REGISTER_IN_DL |
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| 16 | ; JUMP_TO_OUTPUT_AL_TO_IDE_REGISTER_IN_DL |
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| 17 | ; OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER_IN_DL |
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| 18 | ; Parameters: |
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| 19 | ; AL: Byte to output |
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| 20 | ; %1: IDE Register (OUTPUT_AL_TO_IDE_REGISTER) |
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| 21 | ; IDE Control Block Register (OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER) |
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| 22 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 23 | ; Returns: |
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| 24 | ; Nothing |
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| 25 | ; Corrupts registers: |
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| 26 | ; BX, DX |
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| 27 | ;-------------------------------------------------------------------- |
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| 28 | %unmacro OUTPUT_AL_TO_IDE_REGISTER 1 |
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| 29 | %macro OUTPUT_AL_TO_IDE_REGISTER 1 |
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| 30 | mov [cs:JRIDE_COMMAND_BLOCK_REGISTER_WINDOW_OFFSET+%1], al |
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| 31 | %endmacro |
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| 32 | |
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| 33 | %unmacro JUMP_TO_OUTPUT_AL_TO_IDE_REGISTER 1 |
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| 34 | %macro JUMP_TO_OUTPUT_AL_TO_IDE_REGISTER 1 |
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| 35 | OUTPUT_AL_TO_IDE_REGISTER %1 |
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| 36 | ret |
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| 37 | %endmacro |
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| 38 | |
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| 39 | %unmacro OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER 1 |
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| 40 | %macro OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER 1 |
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| 41 | mov [cs:JRIDE_CONTROL_BLOCK_REGISTER_WINDOW_OFFSET+%1], al |
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| 42 | %endmacro |
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| 43 | |
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| 44 | |
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| 45 | ;-------------------------------------------------------------------- |
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| 46 | ; INPUT_TO_AL_FROM_IDE_REGISTER |
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| 47 | ; JUMP_TO_INPUT_TO_AL_FROM_IDE_REGISTER |
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| 48 | ; Parameters: |
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| 49 | ; %1: IDE Register |
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| 50 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 51 | ; Returns: |
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| 52 | ; AL: Inputted byte |
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| 53 | ; Corrupts registers: |
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| 54 | ; BX, DX |
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| 55 | ;-------------------------------------------------------------------- |
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| 56 | %unmacro INPUT_TO_AL_FROM_IDE_REGISTER 1 |
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| 57 | %macro INPUT_TO_AL_FROM_IDE_REGISTER 1 |
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| 58 | mov al, [cs:JRIDE_COMMAND_BLOCK_REGISTER_WINDOW_OFFSET+%1] |
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| 59 | %endmacro |
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| 60 | |
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| 61 | %unmacro JUMP_TO_INPUT_TO_AL_FROM_IDE_REGISTER 1 |
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| 62 | %macro JUMP_TO_INPUT_TO_AL_FROM_IDE_REGISTER 1 |
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| 63 | INPUT_TO_AL_FROM_IDE_REGISTER %1 |
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| 64 | ret |
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| 65 | %endmacro |
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| 66 | |
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| 67 | |
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| 68 | %endif ; MEM_MAPPED_IDE_INC |
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