/** @file
|
VT-d policy definitions.
|
|
Copyright (c) 2019 Intel Corporation. All rights reserved. <BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
**/
|
|
#ifndef _VTD_CONFIG_H_
|
#define _VTD_CONFIG_H_
|
|
#pragma pack(push, 1)
|
|
#define VTD_CONFIG_REVISION 2
|
|
/**
|
The data elements should be initialized by a Platform Module.
|
The data structure is for VT-d driver initialization\n
|
<b>Revision 1</b>:
|
- Initial version.
|
<b>Revision 2</b>:
|
- Add DMA_CONTROL_GUARANTEE bit in the DMAR table
|
**/
|
typedef struct {
|
CONFIG_BLOCK_HEADER Header; ///< Offset 0-27 Config Block Header
|
/**
|
Offset 28:0 :
|
VT-D Support can be verified by reading CAP ID register as expalined in BIOS Spec.
|
This policy is for debug purpose only.
|
If VT-D is not supported, all other policies in this config block will be ignored.
|
<b>0 = To use Vt-d</b>;
|
1 = Avoids programming Vtd bars, Vtd overrides and DMAR table.
|
**/
|
UINT32 VtdDisable : 1;
|
UINT32 X2ApicOptOut : 1; ///< Offset 28:1 :This field is used to enable the X2APIC_OPT_OUT bit in the DMAR table. 1=Enable/Set and <b>0=Disable/Clear</b>
|
UINT32 DmaControlGuarantee : 1; ///< Offset 28:2 :This field is used to enable the DMA_CONTROL_GUARANTEE bit in the DMAR table. 1=Enable/Set and <b>0=Disable/Clear</b>
|
UINT32 RsvdBits0 : 29; ///< Offset 28:3 :Reserved bits for future use
|
UINT32 BaseAddress[SA_VTD_ENGINE_NUMBER]; ///< Offset 32: This field is used to describe the base addresses for VT-d function: <b>BaseAddress[0]=0xFED90000, BaseAddress[1]=0xFED92000, BaseAddress[2]=0xFED91000 </b>
|
} VTD_CONFIG;
|
#pragma pack(pop)
|
|
#endif // _VTD_CONFIG_H_
|
