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 - 2018, Intel Corporation. All rights reserved.<BR>
   7   SPDX-License-Identifier: BSD-2-Clause-Patent
   8 **/
   9
  10 #ifndef _MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_H_
  11 #define _MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_H_
  12
  13 #include <IndustryStandard/Acpi.h>
  14
  15 //
  16 // Ensure proper structure formats
  17 //
  18 #pragma pack(1)
  19
  20 ///
  21 /// Memory Mapped Configuration Space Access Table (MCFG)
  22 /// This table is a basic description table header followed by
  23 /// a number of base address allocation structures.
  24 ///
  25 typedef struct {
  26   UINT64    BaseAddress;
  27   UINT16    PciSegmentGroupNumber;
  28   UINT8     StartBusNumber;
  29   UINT8     EndBusNumber;
  30   UINT32    Reserved;
  31 } EFI_ACPI_MEMORY_MAPPED_ENHANCED_CONFIGURATION_SPACE_BASE_ADDRESS_ALLOCATION_STRUCTURE;
  32
  33 ///
  34 /// MCFG Table header definition.  The rest of the table
  35 /// must be defined in a platform specific manner.
  36 ///
  37 typedef struct {
  38   EFI_ACPI_DESCRIPTION_HEADER    Header;
  39   UINT64                         Reserved;
  40 } EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_BASE_ADDRESS_TABLE_HEADER;
  41
  42 ///
  43 /// MCFG Revision (defined in spec)
  44 ///
  45 #define EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_REVISION  0x01
  46
  47 #pragma pack()
  48
  49 #endif