BaseTools/Source/C/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) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
   7
   8   SPDX-License-Identifier: BSD-2-Clause-Patent
   9
  10 **/
  11
  12 #ifndef _MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_H_
  13 #define _MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_H_
  14
  15 //
  16 // Ensure proper structure formats
  17 //
  18 #pragma pack(1)
  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 Revision (defined in spec)
  34 //
  35 #define EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_REVISION  0x01
  36
  37 #pragma pack()
  38
  39 #endif