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