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1 | /** @file\r |
2 | \r | |
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3 | The protocol provides support to allocate, free, map and umap a DMA buffer\r |
4 | for bus master (e.g PciHostBridge). When SEV is enabled, the DMA operations\r | |
5 | must be performed on unencrypted buffer hence protocol clear the encryption\r | |
6 | bit from the DMA buffer.\r | |
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7 | \r |
8 | Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>\r | |
9 | Copyright (c) 2017, AMD Inc. All rights reserved.<BR>\r | |
8dccfa6d | 10 | (C) Copyright 2017 Hewlett Packard Enterprise Development LP<BR>\r |
b26f0cf9 | 11 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
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12 | \r |
13 | **/\r | |
14 | \r | |
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15 | #ifndef _AMD_SEV_IOMMU_H_\r |
16 | #define _AMD_SEV_IOMMU_H_\r | |
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17 | \r |
18 | #include <Protocol/IoMmu.h>\r | |
19 | \r | |
20 | #include <Library/BaseLib.h>\r | |
f9d129e6 | 21 | #include <Library/BaseMemoryLib.h>\r |
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22 | #include <Library/DebugLib.h>\r |
23 | #include <Library/MemEncryptSevLib.h>\r | |
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24 | #include <Library/MemoryAllocationLib.h>\r |
25 | #include <Library/UefiBootServicesTableLib.h>\r | |
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26 | \r |
27 | /**\r | |
28 | Install IOMMU protocol to provide the DMA support for PciHostBridge and\r | |
29 | MemEncryptSevLib.\r | |
30 | \r | |
31 | **/\r | |
db125079 | 32 | EFI_STATUS\r |
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33 | EFIAPI\r |
34 | AmdSevInstallIoMmuProtocol (\r | |
35 | VOID\r | |
36 | );\r | |
37 | \r | |
38 | #endif\r |