1 /** @file 2 VT-d policy definitions. 3 4 Copyright (c) 2021, Intel Corporation. All rights reserved.<BR> 5 SPDX-License-Identifier: BSD-2-Clause-Patent 6 **/ 7 #ifndef _VTD_CONFIG_H_ 8 #define _VTD_CONFIG_H_ 9 10 #include <Library/VtdInfoLib.h> 11 #pragma pack(push, 1) 12 13 #define VTD_CONFIG_REVISION 1 14 #define VTD_DXE_CONFIG_REVISION 2 15 16 /** 17 The data elements should be initialized by a Platform Module. 18 The data structure is for VT-d driver initialization\n 19 <b>Revision 1</b>: 20 - Initial version. 21 **/ 22 typedef struct { 23 CONFIG_BLOCK_HEADER Header; ///< Offset 0-27 Config Block Header 24 /** 25 Offset 28: 26 VT-D Support can be verified by reading CAP ID register as expalined in BIOS Spec. 27 This policy is for debug purpose only. 28 If VT-D is not supported, all other policies in this config block will be ignored. 29 <b>0 = To use Vt-d</b>; 30 1 = Avoids programming Vtd bars, Vtd overrides and DMAR table. 31 **/ 32 UINT8 VtdDisable; 33 UINT8 X2ApicOptOut; ///< Offset 29 :This field is used to enable the X2APIC_OPT_OUT bit in the DMAR table. 1=Enable/Set and <b>0=Disable/Clear</b> 34 UINT8 DmaControlGuarantee; ///< Offset 30 :This field is used to enable the DMA_CONTROL_GUARANTEE bit in the DMAR table. 1=Enable/Set and <b>0=Disable/Clear</b> 35 UINT8 VtdIgdEnable; ///< Offset 31 :This field is used to enable the VtdIgdEnable Policy. 1=Enable/Set and <b>0=Disable/Clear</b> 36 UINT8 VtdIpuEnable; ///< Offset 32 :This field is used to enable the VtdIpuEnable Policy. 1=Enable/Set and <b>0=Disable/Clear</b> 37 UINT8 VtdIopEnable; ///< Offset 33 :This field is used to enable the VtdIopEnable Policy. 1=Enable/Set and <b>0=Disable/Clear</b> 38 UINT8 VtdItbtEnable; ///< Offset 34 :This field is used to enable the VtdItbtEnable Policy. 1=Enable/Set and <b>0=Disable/Clear</b> 39 UINT8 PreBootDmaMask; ///< Offset 35 :Convey PcdVTdPolicyPropertyMask value from EDK2 IntelSiliconPkg 40 /** 41 Offset 36: 42 This field is used to describe the base addresses for VT-d function:\n 43 VTD BAR for Gfx if IGfx is supported : <b>BaseAddress[0]=0xFED90000,\n 44 VTD BAR for IPU if IPU is supporrted : BaseAddress[1]=0xFED92000,\n 45 VTD BAR for other DMA Agents (except Igfx and IPU) : BaseAddress[2]=0xFED91000,\n 46 VTD BAR for iTBT if iTBT is supported : BaseAddress[3]=0xFED84000, BaseAddress[4]=0xFED85000, BaseAddress[5]=0xFED86000,BaseAddress[6]=0xFED87000</b> 47 **/ 48 UINT32 BaseAddress[VTD_ENGINE_NUMBER]; 49 UINT32 DmaBufferSize; ///< Offset 64 :Protect Memory Region (PMR) DMA buffer size 50 51 52 } VTD_CONFIG; 53 54 /** 55 The data structure is for VT-d driver initialization in DXE\n 56 <b>Revision 1</b>: 57 - Initial version. 58 **/ 59 typedef struct { 60 CONFIG_BLOCK_HEADER Header; ///< Offset 0-27 Config Block Header 61 } VTD_DXE_CONFIG; 62 #pragma pack(pop) 63 64 #endif // _VTD_CONFIG_H_ 65