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 0x00020031
 
#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