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 draft version 0.5.
   4   Specification is available at http://www.pcisig.com.
   5
   6   Copyright (c) 2007, 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 // Ensure proper structure formats
  21 //
  22 #pragma pack(1)
  23 //
  24 // Memory Mapped Configuration Space Access Table (MCFG)
  25 // This table is a basic description table header followed by
  26 // a number of base address allocation structures.
  27 //
  28 typedef struct {
  29   UINT64  BaseAddress;
  30   UINT16  PciSegmentGroupNumber;
  31   UINT8   StartBusNumber;
  32   UINT8   EndBusNumber;
  33   UINT32  Reserved;
  34 } EFI_ACPI_MEMORY_MAPPED_ENHANCED_CONFIGURATION_SPACE_BASE_ADDRESS_ALLOCATION_STRUCTURE;
  35 //
  36 // MCFG Table header definition.  The rest of the table
  37 // must be defined in a platform specific manner.
  38 //
  39 typedef struct {
  40   EFI_ACPI_DESCRIPTION_HEADER                       Header;
  41   UINT64                                            Reserved;
  42 } EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_BASE_ADDRESS_TABLE_HEADER;
  43 //
  44 // MCFG Revision (defined in spec)
  45 //
  46 #define EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_REVISION  0x01
  47
  48 #pragma pack()
  49
  50 #endif