EdkModulePkg/Universal/Disk/Partition/Dxe/Partition.h

/*++

Copyright (c) 2006, Intel Corporation                                                         
All rights reserved. This program and the accompanying materials                          
are licensed and made available under the terms and conditions of the BSD License         
which accompanies this distribution.  The full text of the license may be found at        
http://opensource.org/licenses/bsd-license.php                                            
                                                                                          
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             

Module Name:

  Partition.h
  
Abstract:

  Partition driver that produces logical BlockIo devices from a physical 
  BlockIo device. The logical BlockIo devices are based on the format
  of the raw block devices media. Currently "El Torito CD-ROM", Legacy 
  MBR, and GPT partition schemes are supported.

Revision History

--*/

#ifndef __PARTITION_H__
#define __PARTITION_H__



//
// Partition private data
//
#define PARTITION_PRIVATE_DATA_SIGNATURE  EFI_SIGNATURE_32 ('P', 'a', 'r', 't')
typedef struct {
  UINT64                    Signature;

  EFI_HANDLE                Handle;
  EFI_DEVICE_PATH_PROTOCOL  *DevicePath;
  EFI_BLOCK_IO_PROTOCOL     BlockIo;
  EFI_BLOCK_IO_MEDIA        Media;

  EFI_DISK_IO_PROTOCOL      *DiskIo;
  EFI_BLOCK_IO_PROTOCOL     *ParentBlockIo;
  UINT64                    Start;
  UINT64                    End;
  UINT32                    BlockSize;

  EFI_GUID                  *EspGuid;

} PARTITION_PRIVATE_DATA;

#define PARTITION_DEVICE_FROM_BLOCK_IO_THIS(a)  CR (a, PARTITION_PRIVATE_DATA, BlockIo, PARTITION_PRIVATE_DATA_SIGNATURE)

//
// Global Variables
//
extern EFI_DRIVER_BINDING_PROTOCOL  gPartitionDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL  gPartitionComponentName;

//
// Extract INT32 from char array
//
#define UNPACK_INT32(a) (INT32)( (((UINT8 *) a)[0] <<  0) |    \
                                 (((UINT8 *) a)[1] <<  8) |    \
                                 (((UINT8 *) a)[2] << 16) |    \
                                 (((UINT8 *) a)[3] << 24) )

//
// Extract UINT32 from char array
//
#define UNPACK_UINT32(a) (UINT32)( (((UINT8 *) a)[0] <<  0) |    \
                                   (((UINT8 *) a)[1] <<  8) |    \
                                   (((UINT8 *) a)[2] << 16) |    \
                                   (((UINT8 *) a)[3] << 24) )

EFI_STATUS
PartitionInstallChildHandle (
  IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN  EFI_HANDLE                   ParentHandle,
  IN  EFI_DISK_IO_PROTOCOL         *ParentDiskIo,
  IN  EFI_BLOCK_IO_PROTOCOL        *ParentBlockIo,
  IN  EFI_DEVICE_PATH_PROTOCOL     *ParentDevicePath,
  IN  EFI_DEVICE_PATH_PROTOCOL     *DevicePathNode,
  IN  UINT64                       Start,
  IN  UINT64                       End,
  IN  UINT32                       BlockSize,
  IN  BOOLEAN                      InstallEspGuid
  )
;

BOOLEAN
PartitionInstallGptChildHandles (
  IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN  EFI_HANDLE                   Handle,
  IN  EFI_DISK_IO_PROTOCOL         *DiskIo,
  IN  EFI_BLOCK_IO_PROTOCOL        *BlockIo,
  IN  EFI_DEVICE_PATH_PROTOCOL     *DevicePath
  )
;

BOOLEAN
PartitionInstallElToritoChildHandles (
  IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN  EFI_HANDLE                   Handle,
  IN  EFI_DISK_IO_PROTOCOL         *DiskIo,
  IN  EFI_BLOCK_IO_PROTOCOL        *BlockIo,
  IN  EFI_DEVICE_PATH_PROTOCOL     *DevicePath
  )
;

BOOLEAN
PartitionInstallMbrChildHandles (
  IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN  EFI_HANDLE                   Handle,
  IN  EFI_DISK_IO_PROTOCOL         *DiskIo,
  IN  EFI_BLOCK_IO_PROTOCOL        *BlockIo,
  IN  EFI_DEVICE_PATH_PROTOCOL     *DevicePath
  )
;

#endif