OvmfPkg/Include/Protocol/BlockMmio.h

   1 /** @file
   2   Block IO (memory mapped)
   3
   4   Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #ifndef __BLOCK_MMIO_H__
  16 #define __BLOCK_MMIO_H__
  17
  18 #include <Protocol/BlockIo.h>
  19
  20 #define BLOCK_MMIO_PROTOCOL_GUID \
  21   { \
  22     0x6b558ce3, 0x69e5, 0x4c67, {0xa6, 0x34, 0xf7, 0xfe, 0x72, 0xad, 0xbe, 0x84 } \
  23   }
  24
  25 typedef struct _BLOCK_MMIO_PROTOCOL  BLOCK_MMIO_PROTOCOL;
  26
  27
  28 ///
  29 ///  This protocol provides control over block devices.
  30 ///
  31 struct _BLOCK_MMIO_PROTOCOL {
  32   ///
  33   /// The revision to which the block IO interface adheres. All future
  34   /// revisions must be backwards compatible. If a future version is not
  35   /// back wards compatible, it is not the same GUID.
  36   ///
  37   UINT64                Revision;
  38   ///
  39   /// Pointer to the EFI_BLOCK_IO_MEDIA data for this device.
  40   ///
  41   EFI_BLOCK_IO_MEDIA    *Media;
  42
  43   EFI_PHYSICAL_ADDRESS  BaseAddress;
  44
  45 };
  46
  47 extern EFI_GUID gBlockMmioProtocolGuid;
  48
  49 #endif
  50