freeldr/freeldr/disk.h

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 1999, 2000, 2001  Brian Palmer  <brianp@sginet.com>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20 #ifndef __DISK_H
  21 #define __DISK_H
  22
  23
  24 typedef struct _GEOMETRY
  25 {
  26         ULONG   Cylinders;
  27         ULONG   Heads;
  28         ULONG   Sectors;
  29         ULONG   BytesPerSector;
  30
  31 } GEOMETRY, *PGEOMETRY;
  32
  33 ///////////////////////////////////////////////////////////////////////////////////////
  34 //
  35 // BIOS Disk Functions
  36 //
  37 ///////////////////////////////////////////////////////////////////////////////////////
  38 int             biosdisk(int cmd, int drive, int head, int track, int sector, int nsects, void *buffer); // Implemented in asmcode.S
  39
  40 BOOL    BiosInt13Read(ULONG Drive, ULONG Head, ULONG Track, ULONG Sector, ULONG SectorCount, PVOID Buffer); // Implemented in asmcode.S
  41 BOOL    BiosInt13ReadExtended(ULONG Drive, ULONG Sector, ULONG SectorCount, PVOID Buffer); // Implemented in asmcode.S
  42 BOOL    BiosInt13ExtensionsSupported(ULONG Drive);
  43
  44 void    stop_floppy(void);                      // Implemented in asmcode.S
  45 int             get_heads(int drive);           // Implemented in asmcode.S
  46 int             get_cylinders(int drive);       // Implemented in asmcode.S
  47 int             get_sectors(int drive);         // Implemented in asmcode.S
  48
  49 ///////////////////////////////////////////////////////////////////////////////////////
  50 //
  51 // FreeLoader Disk Functions
  52 //
  53 ///////////////////////////////////////////////////////////////////////////////////////
  54 VOID    DiskError(PUCHAR ErrorString);
  55 BOOL    DiskGetDriveGeometry(ULONG DriveNumber, PGEOMETRY DriveGeometry);
  56 BOOL    DiskSetDriveGeometry(ULONG DriveNumber, ULONG Cylinders, ULONG Heads, ULONG Sectors, ULONG BytesPerSector);
  57 BOOL    DiskReadMultipleLogicalSectors(ULONG DriveNumber, ULONG SectorNumber, ULONG SectorCount, PVOID Buffer);
  58 BOOL    DiskReadLogicalSector(ULONG DriveNumber, ULONG SectorNumber, PVOID Buffer);
  59
  60 #endif  // defined __DISK_H