/** @file
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Copyright (c) 2018 - 2021, 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 <PiDxe.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/SmmServicesTableLib.h>
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#include <Protocol/SiliconRegAccess.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiLib.h>
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USRA_PROTOCOL *mPciUsra = NULL;
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/**
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The constructor function initialize UsraProtocol.
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@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
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**/
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EFI_STATUS
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EFIAPI
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SmmMmPciLibConstructor (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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if (mPciUsra == NULL)
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{
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//
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// USRA protocol need to be installed before the module access USRA.
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//
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Status = gSmst->SmmLocateProtocol (&gUsraProtocolGuid, NULL, (VOID **) &mPciUsra);
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ASSERT_EFI_ERROR (Status);
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ASSERT (mPciUsra != NULL);
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}
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return EFI_SUCCESS;
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}
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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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USRA_ADDRESS Address;
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USRA_PCIE_ADDRESS(Address, UsraWidth32, Bus, Device, Function, 0);
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return mPciUsra->GetRegAddr (&Address);
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}
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/**
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This procedure will get PCIE address
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@param[in] Seg Pcie Segment Number
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@param[in] Bus Pcie Bus Number
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@param[in] Device Pcie Device Number
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@param[in] Function Pcie Function Number
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@retval PCIE address
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**/
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UINTN
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MmPciAddress(
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IN UINT32 Seg,
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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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IN UINT32 Register
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)
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{
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USRA_ADDRESS Address;
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USRA_PCIE_SEG_ADDRESS(Address, UsraWidth32, Seg, Bus, Device, Function, Register);
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return mPciUsra->GetRegAddr (&Address);
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}
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