MdePkg/Include/IndustryStandard/MemoryMappedConfigurationSpaceAccessTable.h

   1 /** @file
   2   ACPI memory mapped configuration space access table definition, defined at
   3   in the PCI Firmware Specification, version 3.0.
   4   Specification is available at http://www.pcisig.com.
   5
   6   Copyright (c) 2007 - 2008, Intel Corporation
   7   All rights reserved. This program and the accompanying materials
   8   are licensed and made available under the terms and conditions of the BSD License
   9   which accompanies this distribution.  The full text of the license may be found at
  10   http://opensource.org/licenses/bsd-license.php
  11
  12   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14 **/
  15
  16 #ifndef _MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_H_
  17 #define _MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_H_
  18
  19 ///
  20 /// Memory Mapped Configuration Space Access Table (MCFG)
  21 /// This table is a basic description table header followed by
  22 /// a number of base address allocation structures.
  23 ///
  24 typedef struct {
  25   UINT64  BaseAddress;
  26   UINT16  PciSegmentGroupNumber;
  27   UINT8   StartBusNumber;
  28   UINT8   EndBusNumber;
  29   UINT32  Reserved;
  30 } EFI_ACPI_MEMORY_MAPPED_ENHANCED_CONFIGURATION_SPACE_BASE_ADDRESS_ALLOCATION_STRUCTURE;
  31
  32 ///
  33 /// MCFG Table header definition.  The rest of the table
  34 /// must be defined in a platform specific manner.
  35 ///
  36 typedef struct {
  37   EFI_ACPI_DESCRIPTION_HEADER                       Header;
  38   UINT64                                            Reserved;
  39 } EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_BASE_ADDRESS_TABLE_HEADER;
  40
  41 ///
  42 /// MCFG Revision (defined in spec)
  43 ///
  44 #define EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_REVISION  0x01
  45
  46 #endif