CcIoMmu.h File Reference

#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>

Go to the source code of this file.

Functions
EFI_STATUS EFIAPI	InstallIoMmuProtocol (VOID)

Detailed Description

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.
Copyright (c) 2017, AMD Inc. All rights reserved.
(C) Copyright 2017 Hewlett Packard Enterprise Development LP
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file CcIoMmu.h.

Function Documentation

InstallIoMmuProtocol()

EFI_STATUS EFIAPI InstallIoMmuProtocol

(

VOID

)

Install IOMMU protocol to provide the DMA support for PciHostBridge.

Initialize Iommu Protocol.

Definition at line 929 of file CcIoMmu.c.