39 lines
986 B
C
39 lines
986 B
C
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/** @file
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The protocol provides support to allocate, free, map and umap a DMA buffer
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for bus master (e.g PciHostBridge). When SEV is enabled, the DMA operations
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must be performed on unencrypted buffer hence protocol clear the encryption
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bit from the DMA buffer.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2017, AMD Inc. All rights reserved.<BR>
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(C) Copyright 2017 Hewlett Packard Enterprise Development LP<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _AMD_SEV_IOMMU_H_
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#define _AMD_SEV_IOMMU_H_
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#include <Protocol/IoMmu.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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#include <Library/MemEncryptSevLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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/**
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Install IOMMU protocol to provide the DMA support for PciHostBridge and
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MemEncryptSevLib.
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**/
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EFI_STATUS
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EFIAPI
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AmdSevInstallIoMmuProtocol (
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VOID
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);
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#endif
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