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/** @file
Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef __PCIE_MMCFG_H__
#define __PCIE_MMCFG_H__
#include <UsraAccessApi.h>
//////////////////////////////////////////////////////////////////////////
//
// PCIE MMCFG Table definition
// This table was based on PCI Firmwar Spec Rev 3.1
//
//////////////////////////////////////////////////////////////////////////
typedef struct
{
UINT8 Signature[4]; ///< “MCFG”. Signature For this Table
UINT32 Length; ///< Length, in bytes, include base address allocation structures.
UINT8 Revision; ///< "1"
UINT8 SegMax; ///< The Maximum number of Segments
UINT16 ValidSegMap; ///< Valid Segment Bit Map, LSB Bit0 for Seg0, bit1 for seg1 ...
UINT8 Reserved[4]; ///< Reserved
} PCIE_MMCFG_HEADER_TYPE;
typedef struct
{
UINT32 BaseAddressL; ///< Processor-relative Base Address (Lower 32-bit) for the Enhanced Configuration Access Mechanism
UINT32 BaseAddressH; ///< Processor-relative Base Address (Upper 32-bit) for the Enhanced Configuration Access Mechanism
UINT16 Segment; ///< PCI Segment Group Number. Default is 0.
UINT8 StartBus; ///< Start PCI Bus number decoded by the host bridge
UINT8 EndBus; ///< End PCI Bus number decoded by the host bridge
UINT8 Reserved[4]; ///< Reserved
} PCIE_MMCFG_BASE_ADDRESS_TYPE;
typedef struct
{
PCIE_MMCFG_HEADER_TYPE Header; ///< The header of MMCFG Table
PCIE_MMCFG_BASE_ADDRESS_TYPE MmcfgBase[1]; ///< First Arrary of base address allocation structures.
} PCIE_MMCFG_TABLE_TYPE;
/**
This Lib is used for platfor to set platform specific Pcie MMCFG Table
@param MmcfgTable: A pointer of the MMCFG Table structure for PCIE_MMCFG_TABLE_TYPE type.
@param NumOfSeg: Sumber of Segments in the table.
@retval <>NULL The function completed successfully.
@retval NULL Returen Error
**/
UINTN
EFIAPI
SetPcieSegMmcfgTable (
IN PCIE_MMCFG_TABLE_TYPE *MmcfgTable,
IN UINT32 NumOfSeg
);
#endif
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