diff options
| -rw-r--r-- | IntelSiliconPkg/Include/Ppi/VtdInfo.h | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/IntelSiliconPkg/Include/Ppi/VtdInfo.h b/IntelSiliconPkg/Include/Ppi/VtdInfo.h index e8be63f3b6..cf85d18981 100644 --- a/IntelSiliconPkg/Include/Ppi/VtdInfo.h +++ b/IntelSiliconPkg/Include/Ppi/VtdInfo.h @@ -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;
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