/** @file
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Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __PCIE_MMCFG_H__
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#define __PCIE_MMCFG_H__
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#include <UsraAccessApi.h>
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//////////////////////////////////////////////////////////////////////////
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//
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// PCIE MMCFG Table definition
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// This table was based on PCI Firmwar Spec Rev 3.1
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//
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//////////////////////////////////////////////////////////////////////////
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typedef struct
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{
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UINT8 Signature[4]; ///< �MCFG�. Signature For this Table
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UINT32 Length; ///< Length, in bytes, include base address allocation structures.
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UINT8 Revision; ///< "1"
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UINT8 SegMax; ///< The Maximum number of Segments
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UINT16 ValidSegMap; ///< Valid Segment Bit Map, LSB Bit0 for Seg0, bit1 for seg1 ...
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UINT8 Reserved[4]; ///< Reserved
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} PCIE_MMCFG_HEADER_TYPE;
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typedef struct
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{
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UINT32 BaseAddressL; ///< Processor-relative Base Address (Lower 32-bit) for the Enhanced Configuration Access Mechanism
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UINT32 BaseAddressH; ///< Processor-relative Base Address (Upper 32-bit) for the Enhanced Configuration Access Mechanism
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UINT16 Segment; ///< PCI Segment Group Number. Default is 0.
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UINT8 StartBus; ///< Start PCI Bus number decoded by the host bridge
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UINT8 EndBus; ///< End PCI Bus number decoded by the host bridge
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UINT8 Reserved[4]; ///< Reserved
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} PCIE_MMCFG_BASE_ADDRESS_TYPE;
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typedef struct
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{
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PCIE_MMCFG_HEADER_TYPE Header; ///< The header of MMCFG Table
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PCIE_MMCFG_BASE_ADDRESS_TYPE MmcfgBase[1]; ///< First Arrary of base address allocation structures.
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} PCIE_MMCFG_TABLE_TYPE;
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/**
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This Lib is used for platfor to set platform specific Pcie MMCFG Table
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@param MmcfgTable: A pointer of the MMCFG Table structure for PCIE_MMCFG_TABLE_TYPE type.
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@param NumOfSeg: Sumber of Segments in the table.
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@retval <>NULL The function completed successfully.
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@retval NULL Returen Error
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**/
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UINTN
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EFIAPI
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SetPcieSegMmcfgTable (
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IN PCIE_MMCFG_TABLE_TYPE *MmcfgTable,
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IN UINT32 NumOfSeg
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);
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#endif
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