| /** @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> | |
| This program and the accompanying materials are licensed and made available | |
| under the terms and conditions of the BSD License which accompanies this | |
| distribution. The full text of the license may be found at | |
| http://opensource.org/licenses/bsd-license.php | |
| THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
| WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| **/ | |
| #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/MemoryAllocationLib.h> | |
| #include <Library/UefiBootServicesTableLib.h> | |
| /** | |
| Install IOMMU protocol to provide the DMA support for PciHostBridge and | |
| MemEncryptSevLib. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| AmdSevInstallIoMmuProtocol ( | |
| VOID | |
| ); | |
| #endif |