BlockIo.h

Go to the documentation of this file.

#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