diff options
Diffstat (limited to 'IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h')
| -rw-r--r-- | IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h index bc14ff9a66..767531e4a9 100644 --- a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h +++ b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h @@ -1,6 +1,6 @@ /** @file
- Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -84,6 +84,21 @@ typedef struct { PCI_DEVICE_INFORMATION PciDeviceInfo;
} VTD_UNIT_INFORMATION;
+//
+// This is the initial max ACCESS request.
+// The number may be enlarged later.
+//
+#define MAX_VTD_ACCESS_REQUEST 0x100
+
+typedef struct {
+ UINT16 Segment;
+ VTD_SOURCE_ID SourceId;
+ UINT64 BaseAddress;
+ UINT64 Length;
+ UINT64 IoMmuAccess;
+} VTD_ACCESS_REQUEST;
+
+
/**
The scan bus callback function.
@@ -561,4 +576,33 @@ GetPciBusDeviceFunction ( OUT UINT8 *Function
);
+/**
+ Append VTd Access Request to global.
+
+ @param[in] Segment The Segment used to identify a VTd engine.
+ @param[in] SourceId The SourceId used to identify a VTd engine and table entry.
+ @param[in] BaseAddress The base of device memory address to be used as the DMA memory.
+ @param[in] Length The length of device memory address to be used as the DMA memory.
+ @param[in] IoMmuAccess The IOMMU access.
+
+ @retval EFI_SUCCESS The IoMmuAccess is set for the memory range specified by BaseAddress and Length.
+ @retval EFI_INVALID_PARAMETER BaseAddress is not IoMmu Page size aligned.
+ @retval EFI_INVALID_PARAMETER Length is not IoMmu Page size aligned.
+ @retval EFI_INVALID_PARAMETER Length is 0.
+ @retval EFI_INVALID_PARAMETER IoMmuAccess specified an illegal combination of access.
+ @retval EFI_UNSUPPORTED The bit mask of IoMmuAccess is not supported by the IOMMU.
+ @retval EFI_UNSUPPORTED The IOMMU does not support the memory range specified by BaseAddress and Length.
+ @retval EFI_OUT_OF_RESOURCES There are not enough resources available to modify the IOMMU access.
+ @retval EFI_DEVICE_ERROR The IOMMU device reported an error while attempting the operation.
+
+**/
+EFI_STATUS
+RequestAccessAttribute (
+ IN UINT16 Segment,
+ IN VTD_SOURCE_ID SourceId,
+ IN UINT64 BaseAddress,
+ IN UINT64 Length,
+ IN UINT64 IoMmuAccess
+ );
+
#endif
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