1 /** @file
2   The definition for VTD Null Root Entry Table PPI.
3 
4   This is a lightweight VTd null root entry table report in PEI phase.
5 
6   Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
7   SPDX-License-Identifier: BSD-2-Clause-Patent
8 
9 **/
10 
11 #ifndef __VTD_NULL_ROOT_ENTRY_TABLE_PPI_H__
12 #define __VTD_NULL_ROOT_ENTRY_TABLE_PPI_H__
13 
14 #define EDKII_VTD_NULL_ROOT_ENTRY_TABLE_PPI_GUID \
15     { \
16       0x3de0593f, 0x6e3e, 0x4542, { 0xa1, 0xcb, 0xcb, 0xb2, 0xdb, 0xeb, 0xd8, 0xff } \
17     }
18 
19 //
20 // Null root entry table address is a fixed silicon reserved address,
21 //   which is used to block the DMA transfer.
22 //
23 typedef UINT64  EDKII_VTD_NULL_ROOT_ENTRY_TABLE_PPI;
24 
25 extern EFI_GUID gEdkiiVTdNullRootEntryTableGuid;
26 
27 #endif
28 
29