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

   1 /*++
   2
   3 Copyright (c) 2006, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14   Partition.h
  15
  16 Abstract:
  17
  18   Partition driver that produces logical BlockIo devices from a physical
  19   BlockIo device. The logical BlockIo devices are based on the format
  20   of the raw block devices media. Currently "El Torito CD-ROM", Legacy
  21   MBR, and GPT partition schemes are supported.
  22
  23 Revision History
  24
  25 --*/
  26
  27 #ifndef __PARTITION_H__
  28 #define __PARTITION_H__
  29
  30
  31
  32 //
  33 // Partition private data
  34 //
  35 #define PARTITION_PRIVATE_DATA_SIGNATURE  EFI_SIGNATURE_32 ('P', 'a', 'r', 't')
  36 typedef struct {
  37   UINT64                    Signature;
  38
  39   EFI_HANDLE                Handle;
  40   EFI_DEVICE_PATH_PROTOCOL  *DevicePath;
  41   EFI_BLOCK_IO_PROTOCOL     BlockIo;
  42   EFI_BLOCK_IO_MEDIA        Media;
  43
  44   EFI_DISK_IO_PROTOCOL      *DiskIo;
  45   EFI_BLOCK_IO_PROTOCOL     *ParentBlockIo;
  46   UINT64                    Start;
  47   UINT64                    End;
  48   UINT32                    BlockSize;
  49
  50   EFI_GUID                  *EspGuid;
  51
  52 } PARTITION_PRIVATE_DATA;
  53
  54 #define PARTITION_DEVICE_FROM_BLOCK_IO_THIS(a)  CR (a, PARTITION_PRIVATE_DATA, BlockIo, PARTITION_PRIVATE_DATA_SIGNATURE)
  55
  56 //
  57 // Global Variables
  58 //
  59 extern EFI_DRIVER_BINDING_PROTOCOL  gPartitionDriverBinding;
  60 extern EFI_COMPONENT_NAME_PROTOCOL  gPartitionComponentName;
  61
  62 //
  63 // Extract INT32 from char array
  64 //
  65 #define UNPACK_INT32(a) (INT32)( (((UINT8 *) a)[0] <<  0) |    \
  66                                  (((UINT8 *) a)[1] <<  8) |    \
  67                                  (((UINT8 *) a)[2] << 16) |    \
  68                                  (((UINT8 *) a)[3] << 24) )
  69
  70 //
  71 // Extract UINT32 from char array
  72 //
  73 #define UNPACK_UINT32(a) (UINT32)( (((UINT8 *) a)[0] <<  0) |    \
  74                                    (((UINT8 *) a)[1] <<  8) |    \
  75                                    (((UINT8 *) a)[2] << 16) |    \
  76                                    (((UINT8 *) a)[3] << 24) )
  77
  78 EFI_STATUS
  79 PartitionInstallChildHandle (
  80   IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
  81   IN  EFI_HANDLE                   ParentHandle,
  82   IN  EFI_DISK_IO_PROTOCOL         *ParentDiskIo,
  83   IN  EFI_BLOCK_IO_PROTOCOL        *ParentBlockIo,
  84   IN  EFI_DEVICE_PATH_PROTOCOL     *ParentDevicePath,
  85   IN  EFI_DEVICE_PATH_PROTOCOL     *DevicePathNode,
  86   IN  UINT64                       Start,
  87   IN  UINT64                       End,
  88   IN  UINT32                       BlockSize,
  89   IN  BOOLEAN                      InstallEspGuid
  90   )
  91 ;
  92
  93 BOOLEAN
  94 PartitionInstallGptChildHandles (
  95   IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
  96   IN  EFI_HANDLE                   Handle,
  97   IN  EFI_DISK_IO_PROTOCOL         *DiskIo,
  98   IN  EFI_BLOCK_IO_PROTOCOL        *BlockIo,
  99   IN  EFI_DEVICE_PATH_PROTOCOL     *DevicePath
 100   )
 101 ;
 102
 103 BOOLEAN
 104 PartitionInstallElToritoChildHandles (
 105   IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
 106   IN  EFI_HANDLE                   Handle,
 107   IN  EFI_DISK_IO_PROTOCOL         *DiskIo,
 108   IN  EFI_BLOCK_IO_PROTOCOL        *BlockIo,
 109   IN  EFI_DEVICE_PATH_PROTOCOL     *DevicePath
 110   )
 111 ;
 112
 113 BOOLEAN
 114 PartitionInstallMbrChildHandles (
 115   IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
 116   IN  EFI_HANDLE                   Handle,
 117   IN  EFI_DISK_IO_PROTOCOL         *DiskIo,
 118   IN  EFI_BLOCK_IO_PROTOCOL        *BlockIo,
 119   IN  EFI_DEVICE_PATH_PROTOCOL     *DevicePath
 120   )
 121 ;
 122
 123 #endif