BlockIo.h

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#ifndef __BLOCK_IO_H__
#define __BLOCK_IO_H__
 
#define EFI_BLOCK_IO_PROTOCOL_GUID \
  { \
    0x964e5b21, 0x6459, 0x11d2, {0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \
  }
 
typedef struct _EFI_BLOCK_IO_PROTOCOL EFI_BLOCK_IO_PROTOCOL;
 
#define BLOCK_IO_PROTOCOL  EFI_BLOCK_IO_PROTOCOL_GUID
 
typedef EFI_BLOCK_IO_PROTOCOL EFI_BLOCK_IO;
 
typedef
EFI_STATUS
(EFIAPI *EFI_BLOCK_RESET)(
  IN EFI_BLOCK_IO_PROTOCOL          *This,
  IN BOOLEAN                        ExtendedVerification
  );
 
typedef
EFI_STATUS
(EFIAPI *EFI_BLOCK_READ)(
  IN EFI_BLOCK_IO_PROTOCOL          *This,
  IN UINT32                         MediaId,
  IN EFI_LBA                        Lba,
  IN UINTN                          BufferSize,
  OUT VOID                          *Buffer
  );
 
typedef
EFI_STATUS
(EFIAPI *EFI_BLOCK_WRITE)(
  IN EFI_BLOCK_IO_PROTOCOL          *This,
  IN UINT32                         MediaId,
  IN EFI_LBA                        Lba,
  IN UINTN                          BufferSize,
  IN VOID                           *Buffer
  );
 
typedef
EFI_STATUS
(EFIAPI *EFI_BLOCK_FLUSH)(
  IN EFI_BLOCK_IO_PROTOCOL  *This
  );
 
typedef struct {
  UINT32     MediaId;
 
  BOOLEAN    RemovableMedia;
 
  BOOLEAN    MediaPresent;
 
  BOOLEAN    LogicalPartition;
 
  BOOLEAN    ReadOnly;
 
  BOOLEAN    WriteCaching;
 
  UINT32     BlockSize;
 
  UINT32     IoAlign;
 
  EFI_LBA    LastBlock;
 
  EFI_LBA    LowestAlignedLba;
 
  UINT32     LogicalBlocksPerPhysicalBlock;
 
  UINT32     OptimalTransferLengthGranularity;
} EFI_BLOCK_IO_MEDIA;
 
#define EFI_BLOCK_IO_PROTOCOL_REVISION   0x00010000
#define EFI_BLOCK_IO_PROTOCOL_REVISION2  0x00020001
#define EFI_BLOCK_IO_PROTOCOL_REVISION3  0x0002001F
 
#define EFI_BLOCK_IO_INTERFACE_REVISION  EFI_BLOCK_IO_PROTOCOL_REVISION
 
struct _EFI_BLOCK_IO_PROTOCOL {
  UINT64                Revision;
  EFI_BLOCK_IO_MEDIA    *Media;
 
  EFI_BLOCK_RESET       Reset;
  EFI_BLOCK_READ        ReadBlocks;
  EFI_BLOCK_WRITE       WriteBlocks;
  EFI_BLOCK_FLUSH       FlushBlocks;
};
 
extern EFI_GUID  gEfiBlockIoProtocolGuid;
 
#endif