/** @file\r
\r
- Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
\r
EDKII_PLATFORM_VTD_POLICY_PROTOCOL *mPlatformVTdPolicy;\r
\r
+VTD_ACCESS_REQUEST *mAccessRequest = NULL;\r
+UINTN mAccessRequestCount = 0;\r
+UINTN mAccessRequestMaxCount = 0;\r
+\r
+/**\r
+ Append VTd Access Request to global.\r
+\r
+ @param[in] Segment The Segment used to identify a VTd engine.\r
+ @param[in] SourceId The SourceId used to identify a VTd engine and table entry.\r
+ @param[in] BaseAddress The base of device memory address to be used as the DMA memory.\r
+ @param[in] Length The length of device memory address to be used as the DMA memory.\r
+ @param[in] IoMmuAccess The IOMMU access.\r
+\r
+ @retval EFI_SUCCESS The IoMmuAccess is set for the memory range specified by BaseAddress and Length.\r
+ @retval EFI_INVALID_PARAMETER BaseAddress is not IoMmu Page size aligned.\r
+ @retval EFI_INVALID_PARAMETER Length is not IoMmu Page size aligned.\r
+ @retval EFI_INVALID_PARAMETER Length is 0.\r
+ @retval EFI_INVALID_PARAMETER IoMmuAccess specified an illegal combination of access.\r
+ @retval EFI_UNSUPPORTED The bit mask of IoMmuAccess is not supported by the IOMMU.\r
+ @retval EFI_UNSUPPORTED The IOMMU does not support the memory range specified by BaseAddress and Length.\r
+ @retval EFI_OUT_OF_RESOURCES There are not enough resources available to modify the IOMMU access.\r
+ @retval EFI_DEVICE_ERROR The IOMMU device reported an error while attempting the operation.\r
+\r
+**/\r
+EFI_STATUS\r
+RequestAccessAttribute (\r
+ IN UINT16 Segment,\r
+ IN VTD_SOURCE_ID SourceId,\r
+ IN UINT64 BaseAddress,\r
+ IN UINT64 Length,\r
+ IN UINT64 IoMmuAccess\r
+ )\r
+{\r
+ VTD_ACCESS_REQUEST *NewAccessRequest;\r
+ UINTN Index;\r
+\r
+ //\r
+ // Optimization for memory.\r
+ //\r
+ // If the last record is to IoMmuAccess=0,\r
+ // Check previous records and remove the matched entry.\r
+ //\r
+ if (IoMmuAccess == 0) {\r
+ for (Index = 0; Index < mAccessRequestCount; Index++) {\r
+ if ((mAccessRequest[Index].Segment == Segment) &&\r
+ (mAccessRequest[Index].SourceId.Uint16 == SourceId.Uint16) &&\r
+ (mAccessRequest[Index].BaseAddress == BaseAddress) &&\r
+ (mAccessRequest[Index].Length == Length) &&\r
+ (mAccessRequest[Index].IoMmuAccess != 0)) {\r
+ //\r
+ // Remove this record [Index].\r
+ // No need to add the new record.\r
+ //\r
+ if (Index != mAccessRequestCount - 1) {\r
+ CopyMem (\r
+ &mAccessRequest[Index],\r
+ &mAccessRequest[Index + 1],\r
+ sizeof (VTD_ACCESS_REQUEST) * (mAccessRequestCount - 1 - Index)\r
+ );\r
+ }\r
+ ZeroMem (&mAccessRequest[mAccessRequestCount - 1], sizeof(VTD_ACCESS_REQUEST));\r
+ mAccessRequestCount--;\r
+ return EFI_SUCCESS;\r
+ }\r
+ }\r
+ }\r
+\r
+ if (mAccessRequestCount >= mAccessRequestMaxCount) {\r
+ NewAccessRequest = AllocateZeroPool (sizeof(*NewAccessRequest) * (mAccessRequestMaxCount + MAX_VTD_ACCESS_REQUEST));\r
+ if (NewAccessRequest == NULL) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+ mAccessRequestMaxCount += MAX_VTD_ACCESS_REQUEST;\r
+ if (mAccessRequest != NULL) {\r
+ CopyMem (NewAccessRequest, mAccessRequest, sizeof(*NewAccessRequest) * mAccessRequestCount);\r
+ FreePool (mAccessRequest);\r
+ }\r
+ mAccessRequest = NewAccessRequest;\r
+ }\r
+\r
+ ASSERT (mAccessRequestCount < mAccessRequestMaxCount);\r
+\r
+ mAccessRequest[mAccessRequestCount].Segment = Segment;\r
+ mAccessRequest[mAccessRequestCount].SourceId = SourceId;\r
+ mAccessRequest[mAccessRequestCount].BaseAddress = BaseAddress;\r
+ mAccessRequest[mAccessRequestCount].Length = Length;\r
+ mAccessRequest[mAccessRequestCount].IoMmuAccess = IoMmuAccess;\r
+\r
+ mAccessRequestCount++;\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Process Access Requests from before DMAR table is installed.\r
+\r
+**/\r
+VOID\r
+ProcessRequestedAccessAttribute (\r
+ VOID\r
+ )\r
+{\r
+ UINTN Index;\r
+ EFI_STATUS Status;\r
+\r
+ DEBUG ((DEBUG_INFO, "ProcessRequestedAccessAttribute ...\n"));\r
+\r
+ for (Index = 0; Index < mAccessRequestCount; Index++) {\r
+ DEBUG ((\r
+ DEBUG_INFO,\r
+ "PCI(S%x.B%x.D%x.F%x) ",\r
+ mAccessRequest[Index].Segment,\r
+ mAccessRequest[Index].SourceId.Bits.Bus,\r
+ mAccessRequest[Index].SourceId.Bits.Device,\r
+ mAccessRequest[Index].SourceId.Bits.Function\r
+ ));\r
+ DEBUG ((\r
+ DEBUG_INFO,\r
+ "(0x%lx~0x%lx) - %lx\n",\r
+ mAccessRequest[Index].BaseAddress,\r
+ mAccessRequest[Index].Length,\r
+ mAccessRequest[Index].IoMmuAccess\r
+ ));\r
+ Status = SetAccessAttribute (\r
+ mAccessRequest[Index].Segment,\r
+ mAccessRequest[Index].SourceId,\r
+ mAccessRequest[Index].BaseAddress,\r
+ mAccessRequest[Index].Length,\r
+ mAccessRequest[Index].IoMmuAccess\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((DEBUG_ERROR, "SetAccessAttribute %r: ", Status));\r
+ }\r
+ }\r
+\r
+ if (mAccessRequest != NULL) {\r
+ FreePool (mAccessRequest);\r
+ }\r
+ mAccessRequest = NULL;\r
+ mAccessRequestCount = 0;\r
+ mAccessRequestMaxCount = 0;\r
+\r
+ DEBUG ((DEBUG_INFO, "ProcessRequestedAccessAttribute Done\n"));\r
+}\r
+\r
/**\r
return the UEFI memory information.\r
\r
\r
ParseDmarAcpiTableRmrr ();\r
\r
+ ProcessRequestedAccessAttribute ();\r
+\r
for (Index = 0; Index < mVtdUnitNumber; Index++) {\r
DEBUG ((DEBUG_INFO,"VTD Unit %d (Segment: %04x)\n", Index, mVtdUnitInformation[Index].Segment));\r
if (mVtdUnitInformation[Index].ExtRootEntryTable != NULL) {\r
\r
Status = GetDmarAcpiTable ();\r
if (EFI_ERROR (Status)) {\r
+ if (Status == EFI_ALREADY_STARTED) {\r
+ gBS->CloseEvent (Event);\r
+ }\r
return;\r
}\r
SetupVtd ();\r
EFI_STATUS Status;\r
EFI_EVENT ExitBootServicesEvent;\r
EFI_EVENT LegacyBootEvent;\r
- EFI_EVENT Event;\r
+ EFI_EVENT EventAcpi10;\r
+ EFI_EVENT EventAcpi20;\r
\r
Status = gBS->CreateEventEx (\r
EVT_NOTIFY_SIGNAL,\r
- TPL_CALLBACK,\r
+ VTD_TPL_LEVEL,\r
AcpiNotificationFunc,\r
NULL,\r
&gEfiAcpi10TableGuid,\r
- &Event\r
+ &EventAcpi10\r
);\r
ASSERT_EFI_ERROR (Status);\r
\r
Status = gBS->CreateEventEx (\r
EVT_NOTIFY_SIGNAL,\r
- TPL_CALLBACK,\r
+ VTD_TPL_LEVEL,\r
AcpiNotificationFunc,\r
NULL,\r
&gEfiAcpi20TableGuid,\r
- &Event\r
+ &EventAcpi20\r
);\r
ASSERT_EFI_ERROR (Status);\r
\r
+ //\r
+ // Signal the events initially for the case\r
+ // that DMAR table has been installed.\r
+ //\r
+ gBS->SignalEvent (EventAcpi20);\r
+ gBS->SignalEvent (EventAcpi10);\r
+\r
Status = gBS->CreateEventEx (\r
EVT_NOTIFY_SIGNAL,\r
TPL_CALLBACK,\r
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