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IntelSiliconPkg/VTdInfoPpi: Let it follow DMAR table. 

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>
This commit is contained in:
Jiewen Yao 2017-09-15 11:33:42 +08:00
parent 83a457840e
commit f02c531967
1 changed files with 14 additions and 11 deletions
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25
IntelSiliconPkg/Include/Ppi/VtdInfo.h
View File

@ -17,22 +17,25 @@
#ifndef __VTD_INFO_PPI_H__
#define __VTD_INFO_PPI_H__
#include <IndustryStandard/DmaRemappingReportingTable.h>
#define EDKII_VTD_INFO_PPI_GUID \
{ \
0x8a59fcb3, 0xf191, 0x400c, { 0x97, 0x67, 0x67, 0xaf, 0x2b, 0x25, 0x68, 0x4a } \
}
typedef struct _EDKII_VTD_INFO_PPI EDKII_VTD_INFO_PPI;
#define EDKII_VTD_INFO_PPI_REVISION 0x00010000
struct _EDKII_VTD_INFO_PPI {
UINT64 Revision;
UINT8 HostAddressWidth;
UINT8 Reserved[3];
UINT32 VTdEngineCount;
UINT64 VTdEngineAddress[1];
};
//
// VTD info PPI just use same data structure as DMAR table.
//
// The reported information must include what is needed in PEI phase, e.g.
// the VTd engine (such as DRHD)
// the reserved DMA address in PEI for eary graphic (such as RMRR for graphic UMA)
//
// The reported information can be and might be a subset of full DMAR table, e.g.
// if some data is not avaiable (such as ANDD),
// if some data is not needed (such as RMRR for legacy USB).
//
typedef EFI_ACPI_DMAR_HEADER EDKII_VTD_INFO_PPI;
extern EFI_GUID gEdkiiVTdInfoPpiGuid;