f02c531967
We notice that there is real usage in PEI to show the graphic out. As such we need report RMRR table in PEI to let VTdPmrPei driver skip the IGD UMA region. Now the VTD_INFO PPI uses the same DMAR data structure. Cc: Star Zeng <star.zeng@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Jiewen Yao <jiewen.yao@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com>
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/** @file
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The definition for VTD information PPI.
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This is a lightweight VTd information report in PEI phase.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __VTD_INFO_PPI_H__
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#define __VTD_INFO_PPI_H__
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#include <IndustryStandard/DmaRemappingReportingTable.h>
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#define EDKII_VTD_INFO_PPI_GUID \
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{ \
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0x8a59fcb3, 0xf191, 0x400c, { 0x97, 0x67, 0x67, 0xaf, 0x2b, 0x25, 0x68, 0x4a } \
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}
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//
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// VTD info PPI just use same data structure as DMAR table.
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//
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// The reported information must include what is needed in PEI phase, e.g.
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// the VTd engine (such as DRHD)
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// the reserved DMA address in PEI for eary graphic (such as RMRR for graphic UMA)
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//
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// The reported information can be and might be a subset of full DMAR table, e.g.
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// if some data is not avaiable (such as ANDD),
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// if some data is not needed (such as RMRR for legacy USB).
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//
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typedef EFI_ACPI_DMAR_HEADER EDKII_VTD_INFO_PPI;
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extern EFI_GUID gEdkiiVTdInfoPpiGuid;
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#endif
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