/** @file
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This file contains routines that get PCI Express Address
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Copyright (c) 2017 - 2019, 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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#include <Library/BaseLib.h>
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#include <Library/PcdLib.h>
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#include <Library/DebugLib.h>
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/**
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This procedure will get PCIE address
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@param[in] Bus Pci Bus Number
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@param[in] Device Pci Device Number
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@param[in] Function Pci Function Number
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@retval PCIE address
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**/
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UINTN
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MmPciBase (
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IN UINT32 Bus,
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IN UINT32 Device,
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IN UINT32 Function
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)
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{
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ASSERT ((Bus <= 0xFF) && (Device <= 0x1F) && (Function <= 0x7));
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#ifdef FSP_FLAG
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return ((UINTN) PcdGet64 (PcdSiPciExpressBaseAddress) + (UINTN) (Bus << 20) + (UINTN) (Device << 15) + (UINTN) (Function << 12));
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#else
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return ((UINTN) PcdGet64 (PcdPciExpressBaseAddress) + (UINTN) (Bus << 20) + (UINTN) (Device << 15) + (UINTN) (Function << 12));
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#endif
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}
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