61 lines
3.0 KiB
C
61 lines
3.0 KiB
C
/** @file
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The GUID definition for Vtd Data Hob
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@copyright
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INTEL CONFIDENTIAL
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Copyright 2019 Intel Corporation.
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The source code contained or described herein and all documents related to the
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source code ("Material") are owned by Intel Corporation or its suppliers or
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licensors. Title to the Material remains with Intel Corporation or its suppliers
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and licensors. The Material may contain trade secrets and proprietary and
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confidential information of Intel Corporation and its suppliers and licensors,
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and is protected by worldwide copyright and trade secret laws and treaty
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provisions. No part of the Material may be used, copied, reproduced, modified,
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published, uploaded, posted, transmitted, distributed, or disclosed in any way
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without Intel's prior express written permission.
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No license under any patent, copyright, trade secret or other intellectual
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property right is granted to or conferred upon you by disclosure or delivery
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of the Materials, either expressly, by implication, inducement, estoppel or
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otherwise. Any license under such intellectual property rights must be
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express and approved by Intel in writing.
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Unless otherwise agreed by Intel in writing, you may not remove or alter
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this notice or any other notice embedded in Materials by Intel or
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Intel's suppliers or licensors in any way.
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This file contains an 'Intel Peripheral Driver' and is uniquely identified as
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"Intel Reference Module" and is licensed for Intel CPUs and chipsets under
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the terms of your license agreement with Intel or your vendor. This file may
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be modified by the user, subject to additional terms of the license agreement.
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@par Specification Reference:
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**/
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#ifndef _VTD_DATA_HOB_H_
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#define _VTD_DATA_HOB_H_
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#include <Library/VtdInfoLib.h>
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#include <Base.h>
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extern EFI_GUID gVtdDataHobGuid;
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#pragma pack (push,1)
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///
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/// The data elements should be initialized by a Platform Module.
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/// The data structure is for VT-d driver initialization
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///
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typedef struct {
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EFI_HOB_GUID_TYPE EfiHobGuidType; ///< GUID Hob type structure for gVtdDataHobGuid
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BOOLEAN VtdDisable; ///< 1 = Avoids programming Vtd bars, Vtd overrides and DMAR table
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UINT32 BaseAddress[VTD_ENGINE_NUMBER]; ///< This field is used to describe the base addresses for VT-d function
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BOOLEAN X2ApicOptOut; ///< This field is used to enable the X2APIC_OPT_OUT bit in the DMAR table. <b>1=Enable/Set</b> and 0=Disable/Clear
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BOOLEAN DmaControlGuarantee; ///< This field is used to enable the DMA_CONTROL_GUARANTEE bit in the DMAR table. <b>1=Enable/Set</b> and 0=Disable/Clear
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BOOLEAN InterruptRemappingSupport; ///< This field is used to indicate Interrupt Remapping supported or not
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UINT32 DmaBufferBase; ///< Iommu PEI DMA buffer base in low memory region, in Mbytes units
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} VTD_DATA_HOB;
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#pragma pack (pop)
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#endif
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