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