Tiberiu Chibici
caa7718af9
==================================================== Mainly changed: HAL.FSs + Updated 'mount' call in floppy driver, now done after controller is initialized + Added 'detect' function for FAT file systems + Implemented 'initdr' driver, however still bugged + Improved logger
93 lines
3.2 KiB
C
93 lines
3.2 KiB
C
/*
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* floppy.h
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*
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* Created on: Aug 20, 2011
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* Author: Tiberiu
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*/
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#ifndef FLOPPY_H_
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#define FLOPPY_H_
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#include <types.h>
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enum FloppyRegisters
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{
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FloppyRegisterStatusA = 0x3F0, // read-only
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FloppyRegisterStatusB = 0x3F1, // read-only
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FloppyRegisterDigitalOutput = 0x3F2,
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FloppyRegisterTapeDrive = 0x3F3,
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FloppyRegisterMainStatus = 0x3F4, // read-only
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FloppyRegisterDatarateSelect = 0x3F4, // write-only
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FloppyRegisterFIFO = 0x3F5,
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FloppyRegisterDigitalInput = 0x3F7, // read-only
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FloppyRegisterConfigurationControl = 0x3F7 // write-only
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};
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enum FloppyCommands
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{
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FloppyCommandReadTrack = 2, // generates IRQ6
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FloppyCommandSpecify = 3, // * set drive parameters
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FloppyCommandSenseDriveStatus = 4,
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FloppyCommandWriteData = 5, // * write to the disk
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FloppyCommandReadData = 6, // * read from the disk
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FloppyCommandRecalibrate = 7, // * seek to cylinder 0
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FloppyCommandSenseInterrupt = 8, // * ack IRQ6, get status of last command
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FloppyCommandWriteDeletedData = 9,
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FloppyCommandReadID = 10, // generates IRQ6
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FloppyCommandReadDeletedData = 12,
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FloppyCommandFormatTrack = 13, // *
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FloppyCommandSeek = 15, // * seek both heads to cylinder X
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FloppyCommandVersion = 16, // * used during initialization, once
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FloppyCommandScanEqual = 17,
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FloppyCommandPerpendicularMode = 18, // * used during initialization, once, maybe
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FloppyCommandConfigure = 19, // * set controller parameters
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FloppyCommandLock = 20, // * protect controller params from a reset
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FloppyCommandVerify = 22,
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FloppyCommandScanLowOrEqual = 25,
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FloppyCommandScanHighOrEqual = 29,
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FloppyModeMultitrack = 0x80,
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FloppyModeMagneticEncoding = 0x40, // always set for read/write/verify/format
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FloppyModeSkip = 0x20
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};
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enum FloppyMSRMasks
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{
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FloppyMsrRQM = 0x80,
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FloppyMsrDIO = 0x40,
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FloppyMsrNDMA = 0x20,
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FloppyMsrBusy = 0x10
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};
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typedef struct {
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uint32 Size, SectorsPerTrack, Heads, Tracks;
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uint8 Gap, DataRate, Spec1, SRT, HLT, HUT;
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uint32 Spinup, Spindown, InterruptTimeout;
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string Name;
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} FloppyType;
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extern void FloppyInitialize();
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extern void FloppyIrqHandler(_RegsStack32 *r);
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extern void FloppyWaitIrq();
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extern void FloppyInitDma();
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extern void FloppyReset();
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extern void FloppyConfigure();
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extern void FloppySendCommand (uint8 command);
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extern uint8 FloppyReadData ();
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extern void FloppySenseInterrupt(uint8 *st0, uint8 *cyl);
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extern void FloppySpecify (uint8 fd);
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extern void FloppyMotor (uint8 fd_number, uint8 status);
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extern void FloppySelectDrive(uint8 number);
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extern void FloppyRecalibrate(uint8 fd_number);
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extern void FloppyRW(uint8 isWrite, uint8 fd_number, uint8 head, uint8 cylinder, uint8 sector);
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extern uint32 FloppyRead(uint8 drive, uint32 lba);
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extern uint32 FloppyWrite(uint8 drive, uint32 lba);
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extern uint32 Floppy0ReadRoutine (uint32 offset, void* buffer);
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extern uint32 Floppy1ReadRoutine (uint32 offset, void* buffer);
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extern uint32 Floppy0WriteRoutine (uint32 offset, void* buffer);
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extern uint32 Floppy1WriteRoutine (uint32 offset, void* buffer);
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#endif /* FLOPPY_H_ */
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