318 lines
8.6 KiB
C
318 lines
8.6 KiB
C
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#pragma pack(1)
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#if defined(NEC_98)
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#define MAX_FLOPPY_TYPE 7
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#else // !NEC_98
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#define MAX_FLOPPY_TYPE 5
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#endif // !NEC_98
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typedef struct A_DISKIO {
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DWORD StartSector;
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WORD Sectors;
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WORD BufferOff;
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WORD BufferSeg;
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} DISKIO, * PDISKIO;
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// Bios Parameter Block (BPB)
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typedef struct A_BPB {
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WORD SectorSize; // sector size in bytes
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BYTE ClusterSize; // cluster size in sectors
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WORD ReservedSectors; // number of reserved sectors
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BYTE FATs; // number of FATs
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WORD RootDirs; // number of root directory entries
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WORD Sectors; // number of sectors
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BYTE MediaID; // media descriptor
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WORD FATSize; // FAT size in sectors
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WORD TrackSize; // track size in sectors;
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WORD Heads; // number of heads
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DWORD HiddenSectors; // number of hidden sectors
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DWORD BigSectors; // number of sectors for big media
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} BPB, *PBPB;
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typedef struct A_DPB {
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BYTE DriveNum; // driver numer, 0 - A, 1 -B and so on
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BYTE Unit; // unit number of DPB in the driver
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WORD SectorSize; // sector size in bytes
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BYTE ClusterMask; // cluster mask
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BYTE ClusterShift; // cluster shift count
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WORD FATSector; // starting sector of FAT
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BYTE FATs; // number of FAT
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WORD RootDirs; // number of root directory entries
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WORD FirstDataSector; // first sector for the first cluster
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WORD MaxCluster; // number of cluster + 1
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WORD FATSize; // FAT size in sectors
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WORD DirSector; // starting sector of directory
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DWORD DriveAddr; // address of the corresponding driver
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BYTE MediaID; // media ID
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BYTE FirstAccess; // 0xFF if this DPB is first accessed
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struct A_DPB * Next; // next DPB
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WORD FreeCluster; // cluster # of the last allocated
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WORD FreeClusters; // number of free clusters, 0xFFFF
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// if unknown
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} DPB, * PDPB;
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typedef struct A_DEVICEPARAMETERS {
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BYTE Functions;
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BYTE DeviceType;
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WORD DeviceAttrs;
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WORD Cylinders;
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BYTE MediaType;
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BPB bpb;
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} DEVICEPARAMETERS, *PDEVICE_PARAMETERS;
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#define LABEL_LENGTH 11
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#define FILESYSTYPE_LENGTH 8
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typedef struct _DISK_LABEL {
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CHAR Name[LABEL_LENGTH];
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} DISK_LABEL, *PDISK_LABEL;
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typedef struct _FILESYSTYPE {
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CHAR Name[FILESYSTYPE_LENGTH];
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} FILESYSTYPE, * PFILESYSTYPE;
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// Functions for Get Device Parameters
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#define BUILD_DEVICE_BPB 0x01
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// Functions for Set Device Parameters
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#define INSTALL_FAKE_BPB 0x01
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#define ONLY_SET_TRACKLAYOUT 0x02
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#define TRACK_LAYOUT_IS_GOOD 0x04
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// Functions for Format Track
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#define STATUS_FOR_FORMAT 0x01
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// error code from format status call
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#define FORMAT_NO_ROM_SUPPORTED 0x01
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#define FORMAT_COMB_NOT_SUPPORTED 0x02
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// read and write block
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typedef struct _RWBLOCK {
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BYTE Functions;
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WORD Head;
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WORD Cylinder;
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WORD StartSector;
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WORD Sectors;
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WORD BufferOff;
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WORD BufferSeg;
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} RW_BLOCK, *PRW_BLOCK;
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// format and verify track block
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typedef struct _FMT_BLOCK{
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BYTE Functions;
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WORD Head;
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WORD Cylinder;
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} FMT_BLOCK, *PFMT_BLOCK;
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// media id block
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typedef struct _MID {
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WORD InfoLevel;
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DWORD SerialNum;
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DISK_LABEL Label;
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FILESYSTYPE FileSysType;
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} MID, *PMID;
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// access flage
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typedef struct _ACCESSCTRL {
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BYTE Functions;
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BYTE AccessFlag;
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} ACCESSCTRL, * PACCESSCTRL;
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// bit definitions for flags
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// definitions for misc flags
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#define NON_REMOVABLE 0x01
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#define HAS_CHANGELINE 0x02
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#define RETURN_FAKE_BPB 0x04
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#define GOOD_TRACKLAYOUT 0x08
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#define MULTI_OWNER 0x10
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#define PHYS_OWNER 0x20
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#define MEDIA_CHANGED 0x40
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#define CHANGED_BY_FORMAT 0x100
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#define UNFORMATTED_MEDIA 0x200
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#define FIRSTACCESS 0x8000
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#define EXT_BOOTSECT_SIG 0x29
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typedef struct _BOOTSECTOR {
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BYTE Jump;
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BYTE Target[2];
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BYTE OemName[8];
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BPB bpb;
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BYTE DriveNum;
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BYTE Reserved;
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BYTE ExtBootSig;
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DWORD SerialNum;
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DISK_LABEL Label;
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FILESYSTYPE FileSysType;
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} BOOTSECTOR, * PBOOTSECTOR;
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// Bios Data Structure (BDS)
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typedef struct A_BDS {
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struct A_BDS *Next; //pointer to next bds
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BYTE DrivePhys; //physical drive number, 0 based
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BYTE DriveLog; //logical drive number, 0 based
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BPB bpb;
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BYTE FatSize;
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WORD OpenCount;
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BYTE MediaType;
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WORD Flags;
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WORD Cylinders;
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BPB rbpb;
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BYTE LastTrack;
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DWORD Time;
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DWORD SerialNum;
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DISK_LABEL Label;
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FILESYSTYPE FileSysType;
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BYTE FormFactor;
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// the fllowing fields are dedicated for the drive itself
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WORD DriveType;
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WORD Sectors;
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HANDLE fd;
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DWORD TotalSectors;
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} BDS, *PBDS;
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#pragma pack()
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// drive type
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#define DRIVETYPE_NULL 0
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#define DRIVETYPE_360 1
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#define DRIVETYPE_12M 2
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#define DRIVETYPE_720 3
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#define DRIVETYPE_144 4
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#define DRIVETYPE_288 5
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#define DRIVETYPE_FDISK 0xff
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// FORM FACTOR
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#define FF_360 0
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#define FF_120 1
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#define FF_720 2
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#define FF_FDISK 5
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#define FF_144 7
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#define FF_288 9
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#if defined(NEC_98)
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#define FF_125 4
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#define FF_640 2
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#endif // NEC_98
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#define DOS_DIR_ENTRY_LENGTH 32
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#define DOS_DIR_ENTRY_LENGTH_SHIFT_COUNT 5
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// bios diskette i/o functions
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#define DISKIO_RESET 0
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#define DISKIO_GETSTATUS 1
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#define DISKIO_READ 2
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#define DISKIO_WRITE 3
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#define DISKIO_VERIFY 4
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#define DISKIO_FORMAT 5
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#define DISKIO_GETPARAMS 8
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#define DISKIO_DRIVETYPE 0x15
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#define DISKIO_DISKCHANGE 0x16
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#define DISKIO_SETTYPE 0x17
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#define DISKIO_SETMEDIA 0x18
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#define DISKIO_INVALID 0xff
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// Block device generic IOCTL(RAWIO) subfunction code
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#define IOCTL_SETDPM 0x40
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#define IOCTL_WRITETRACK 0x41
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#define IOCTL_FORMATTRACK 0x42
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#define IOCTL_SETMEDIA 0x46
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#define IOCTL_SETACCESS 0x47
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#define IOCTL_GETDPM 0x60
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#define IOCTL_READTRACK 0x61
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#define IOCTL_VERIFYTRACK 0x62
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#define IOCTL_GETMEDIA 0x66
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#define IOCTL_GETACCESS 0x67
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#define IOCTL_SENSEMEDIA 0x68
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#define IOCTL_GENERIC_MIN IOCTL_SETDPM
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#define IOCTL_GENERIC_MAX IOCTL_SENSEMEDIA
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// dos error code
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#define DOS_WRITE_PROTECTION 0
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#define DOS_UNKNOWN_UNIT 1
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#define DOS_DRIVE_NOT_READY 2
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#define DOS_CRC_ERROR 4
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#define DOS_SEEK_ERROR 6
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#define DOS_UNKNOWN_MEDIA 7
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#define DOS_SECTOR_NOT_FOUND 8
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#define DOS_WRITE_FAULT 10
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#define DOS_READ_FAULT 11
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#define DOS_GEN_FAILURE 12
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#define DOS_INVALID_MEDIA_CHANGE 15
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//BIOS disk io error code
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#define BIOS_INVALID_FUNCTION 0x01
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#define BIOS_BAD_ADDRESS_MARK 0x02
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#define BIOS_WRITE_PROTECTED 0x03
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#define BIOS_BAD_SECTOR 0x04
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#define BIOS_DISK_CHANGED 0x05
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#define BIOS_DMA_OVERRUN 0x06
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#define BIOS_DMA_BOUNDARY 0x08
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#define BIOS_NO_MEDIA 0x0C
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#define BIOS_CRC_ERROR 0x10
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#define BIOS_FDC_ERROR 0x20
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#define BIOS_SEEK_ERROR 0x40
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#define BIOS_TIME_OUT 0x80
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// dos disk generic io control error code
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#define DOS_INVALID_FUNCTION 1
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#define DOS_FILE_NOT_FOUND 2
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#define DOS_ACCESS_DENIED 5
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#define BIOS_DISKCHANGED 6
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#if defined(NEC_98)
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#define BYTES_PER_SECTOR 1024
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#else // !NEC_98
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#define BYTES_PER_SECTOR 512
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#endif // !NEC_98
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VOID demDasdInit(VOID);
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VOID demFloppyInit(VOID);
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VOID demFdiskInit(VOID);
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VOID demAbsReadWrite(BOOL IsWrite);
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DWORD demDasdRead(PBDS pbds, DWORD StartSector, DWORD Sectors,
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WORD BufferOff, WORD BufferSeg);
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DWORD demDasdWrite(PBDS pbds, DWORD StartSector, DWORD Sectors,
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WORD BufferOff, WORD BufferSeg);
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BOOL demDasdFormat(PBDS pbds, DWORD Head, DWORD Cylinder, MEDIA_TYPE * Media);
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BOOL demDasdVerify(PBDS pbds, DWORD Cylinder, DWORD Head);
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PBDS demGetBDS(BYTE Drive);
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BOOL demGetBPB(PBDS pbds);
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WORD demWinErrorToDosError(DWORD LastError);
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VOID diskette_io(VOID);
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DWORD BiosErrorToNTError(BYTE BiosError);
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DWORD demBiosDiskIoRW(PBDS pbds, DWORD StartSector, DWORD Sectors,
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WORD BufferOff, WORD BufferSeg, BOOL IsWrite);
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VOID sas_loadw(DWORD, WORD *);
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// imported from host floppy support module
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BOOL nt_floppy_close(BYTE drive);
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ULONG nt_floppy_read(BYTE drive, ULONG offset, ULONG size, PBYTE buffer);
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ULONG nt_floppy_write(BYTE drive, ULONG offset, ULONG size, PBYTE buffer);
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ULONG nt_floppy_format(BYTE drive, WORD cylinder, WORD head, MEDIA_TYPE media);
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BOOL nt_floppy_media_check(BYTE drive);
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MEDIA_TYPE nt_floppy_get_media_type(BYTE Drive, WORD Cylinders, WORD Sectors, WORD Heads);
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BOOL nt_floppy_verify(BYTE drive, DWORD offset, DWORD size);
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BOOL nt_fdisk_init(BYTE drive, PBPB bpb, PDISK_GEOMETRY disk_geometry);
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ULONG nt_fdisk_read(BYTE drive, PLARGE_INTEGER offset, ULONG size, PBYTE buffer);
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ULONG nt_fdisk_write(BYTE drive,PLARGE_INTEGER offset, ULONG size, PBYTE buffer);
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BOOL nt_fdisk_verify(BYTE drive, PLARGE_INTEGER offset, ULONG size);
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BOOL nt_fdisk_close(BYTE drive);
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extern PBDS demBDS;
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extern BYTE NumberOfFloppy, NumberOfFdisk;
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#if defined(NEC_98)
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BOOL demIsDriveFloppy(BYTE DriveLog); // defined in demdasd.c
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#else // !NEC_98
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#define demIsDriveFloppy(DriveLog) (DriveLog < NumberOfFloppy)
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#endif // !NEC_98
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