MdePkg/Include/IndustryStandard/MemoryMappedConfigurationSpaceAccessTable.h

/** @file
  ACPI memory mapped configuration space access table definition, defined at
  in the PCI Firmware Specification, version 3.0.
  Specification is available at http://www.pcisig.com.

  Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent
**/

#ifndef _MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_H_
#define _MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_H_

#include <IndustryStandard/Acpi.h>

//
// Ensure proper structure formats
//
#pragma pack(1)

///
/// Memory Mapped Configuration Space Access Table (MCFG)
/// This table is a basic description table header followed by
/// a number of base address allocation structures.
///
typedef struct {
  UINT64    BaseAddress;
  UINT16    PciSegmentGroupNumber;
  UINT8     StartBusNumber;
  UINT8     EndBusNumber;
  UINT32    Reserved;
} EFI_ACPI_MEMORY_MAPPED_ENHANCED_CONFIGURATION_SPACE_BASE_ADDRESS_ALLOCATION_STRUCTURE;

///
/// MCFG Table header definition.  The rest of the table
/// must be defined in a platform specific manner.
///
typedef struct {
  EFI_ACPI_DESCRIPTION_HEADER    Header;
  UINT64                         Reserved;
} EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_BASE_ADDRESS_TABLE_HEADER;

///
/// MCFG Revision (defined in spec)
///
#define EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_REVISION  0x01

#pragma pack()

#endif