--- /dev/null
+/** @file\r
+\r
+ Copyright (c) 2017, 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
+ http://opensource.org/licenses/bsd-license.php.\r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#include "DmaProtection.h"\r
+\r
+/**\r
+ Create extended context entry.\r
+\r
+ @param[in] VtdIndex The index of the VTd engine.\r
+\r
+ @retval EFI_SUCCESS The extended context entry is created.\r
+ @retval EFI_OUT_OF_RESOURCE No enough resource to create extended context entry.\r
+**/\r
+EFI_STATUS\r
+CreateExtContextEntry (\r
+ IN UINTN VtdIndex\r
+ )\r
+{\r
+ UINTN Index;\r
+ VOID *Buffer;\r
+ UINTN RootPages;\r
+ UINTN ContextPages;\r
+ VTD_EXT_ROOT_ENTRY *ExtRootEntry;\r
+ VTD_EXT_CONTEXT_ENTRY *ExtContextEntryTable;\r
+ VTD_EXT_CONTEXT_ENTRY *ExtContextEntry;\r
+ VTD_SOURCE_ID *PciDescriptor;\r
+ VTD_SOURCE_ID SourceId;\r
+ UINTN MaxBusNumber;\r
+ UINTN EntryTablePages;\r
+\r
+ MaxBusNumber = 0;\r
+ for (Index = 0; Index < mVtdUnitInformation[VtdIndex].PciDeviceInfo.PciDescriptorNumber; Index++) {\r
+ PciDescriptor = &mVtdUnitInformation[VtdIndex].PciDeviceInfo.PciDescriptors[Index];\r
+ if (PciDescriptor->Bits.Bus > MaxBusNumber) {\r
+ MaxBusNumber = PciDescriptor->Bits.Bus;\r
+ }\r
+ }\r
+ DEBUG ((DEBUG_INFO," MaxBusNumber - 0x%x\n", MaxBusNumber));\r
+\r
+ RootPages = EFI_SIZE_TO_PAGES (sizeof (VTD_EXT_ROOT_ENTRY) * VTD_ROOT_ENTRY_NUMBER);\r
+ ContextPages = EFI_SIZE_TO_PAGES (sizeof (VTD_EXT_CONTEXT_ENTRY) * VTD_CONTEXT_ENTRY_NUMBER);\r
+ EntryTablePages = RootPages + ContextPages * (MaxBusNumber + 1);\r
+ Buffer = AllocateZeroPages (EntryTablePages);\r
+ if (Buffer == NULL) {\r
+ DEBUG ((DEBUG_INFO,"Could not Alloc Root Entry Table.. \n"));\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+ mVtdUnitInformation[VtdIndex].ExtRootEntryTable = (VTD_EXT_ROOT_ENTRY *)Buffer;\r
+ Buffer = (UINT8 *)Buffer + EFI_PAGES_TO_SIZE (RootPages);\r
+\r
+ for (Index = 0; Index < mVtdUnitInformation[VtdIndex].PciDeviceInfo.PciDescriptorNumber; Index++) {\r
+ PciDescriptor = &mVtdUnitInformation[VtdIndex].PciDeviceInfo.PciDescriptors[Index];\r
+\r
+ SourceId.Bits.Bus = PciDescriptor->Bits.Bus;\r
+ SourceId.Bits.Device = PciDescriptor->Bits.Device;\r
+ SourceId.Bits.Function = PciDescriptor->Bits.Function;\r
+\r
+ ExtRootEntry = &mVtdUnitInformation[VtdIndex].ExtRootEntryTable[SourceId.Index.RootIndex];\r
+ if (ExtRootEntry->Bits.LowerPresent == 0) {\r
+ ExtRootEntry->Bits.LowerContextTablePointer = RShiftU64 ((UINT64)(UINTN)Buffer, 12);\r
+ ExtRootEntry->Bits.LowerPresent = 1;\r
+ ExtRootEntry->Bits.UpperContextTablePointer = RShiftU64 ((UINT64)(UINTN)Buffer, 12) + 1;\r
+ ExtRootEntry->Bits.UpperPresent = 1;\r
+ Buffer = (UINT8 *)Buffer + EFI_PAGES_TO_SIZE (ContextPages);\r
+ }\r
+\r
+ ExtContextEntryTable = (VTD_EXT_CONTEXT_ENTRY *)(UINTN)LShiftU64(ExtRootEntry->Bits.LowerContextTablePointer, 12) ;\r
+ ExtContextEntry = &ExtContextEntryTable[SourceId.Index.ContextIndex];\r
+ ExtContextEntry->Bits.TranslationType = 0;\r
+ ExtContextEntry->Bits.FaultProcessingDisable = 0;\r
+ ExtContextEntry->Bits.Present = 0;\r
+\r
+ DEBUG ((DEBUG_INFO,"DOMAIN: S%04x, B%02x D%02x F%02x\n", mVtdUnitInformation[VtdIndex].Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function));\r
+\r
+ switch (mVtdUnitInformation[VtdIndex].CapReg.Bits.SAGAW) {\r
+ case BIT1:\r
+ ExtContextEntry->Bits.AddressWidth = 0x1;\r
+ break;\r
+ case BIT2:\r
+ ExtContextEntry->Bits.AddressWidth = 0x2;\r
+ break;\r
+ }\r
+ }\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Dump DMAR extended context entry table.\r
+\r
+ @param[in] ExtRootEntry DMAR extended root entry.\r
+**/\r
+VOID\r
+DumpDmarExtContextEntryTable (\r
+ IN VTD_EXT_ROOT_ENTRY *ExtRootEntry\r
+ )\r
+{\r
+ UINTN Index;\r
+ UINTN Index2;\r
+ VTD_EXT_CONTEXT_ENTRY *ExtContextEntry;\r
+\r
+ DEBUG ((DEBUG_INFO,"=========================\n"));\r
+ DEBUG ((DEBUG_INFO,"DMAR ExtContext Entry Table:\n"));\r
+\r
+ DEBUG ((DEBUG_INFO,"ExtRootEntry Address - 0x%x\n", ExtRootEntry));\r
+\r
+ for (Index = 0; Index < VTD_ROOT_ENTRY_NUMBER; Index++) {\r
+ if ((ExtRootEntry[Index].Uint128.Uint64Lo != 0) || (ExtRootEntry[Index].Uint128.Uint64Hi != 0)) {\r
+ DEBUG ((DEBUG_INFO," ExtRootEntry(0x%02x) B%02x - 0x%016lx %016lx\n",\r
+ Index, Index, ExtRootEntry[Index].Uint128.Uint64Hi, ExtRootEntry[Index].Uint128.Uint64Lo));\r
+ }\r
+ if (ExtRootEntry[Index].Bits.LowerPresent == 0) {\r
+ continue;\r
+ }\r
+ ExtContextEntry = (VTD_EXT_CONTEXT_ENTRY *)(UINTN)LShiftU64 (ExtRootEntry[Index].Bits.LowerContextTablePointer, 12);\r
+ for (Index2 = 0; Index2 < VTD_CONTEXT_ENTRY_NUMBER/2; Index2++) {\r
+ if ((ExtContextEntry[Index2].Uint256.Uint64_1 != 0) || (ExtContextEntry[Index2].Uint256.Uint64_2 != 0) ||\r
+ (ExtContextEntry[Index2].Uint256.Uint64_3 != 0) || (ExtContextEntry[Index2].Uint256.Uint64_4 != 0)) {\r
+ DEBUG ((DEBUG_INFO," ExtContextEntryLower(0x%02x) D%02xF%02x - 0x%016lx %016lx %016lx %016lx\n",\r
+ Index2, Index2 >> 3, Index2 & 0x7, ExtContextEntry[Index2].Uint256.Uint64_4, ExtContextEntry[Index2].Uint256.Uint64_3, ExtContextEntry[Index2].Uint256.Uint64_2, ExtContextEntry[Index2].Uint256.Uint64_1));\r
+ }\r
+ if (ExtContextEntry[Index2].Bits.Present == 0) {\r
+ continue;\r
+ }\r
+ }\r
+\r
+ if (ExtRootEntry[Index].Bits.UpperPresent == 0) {\r
+ continue;\r
+ }\r
+ ExtContextEntry = (VTD_EXT_CONTEXT_ENTRY *)(UINTN)LShiftU64 (ExtRootEntry[Index].Bits.UpperContextTablePointer, 12);\r
+ for (Index2 = 0; Index2 < VTD_CONTEXT_ENTRY_NUMBER/2; Index2++) {\r
+ if ((ExtContextEntry[Index2].Uint256.Uint64_1 != 0) || (ExtContextEntry[Index2].Uint256.Uint64_2 != 0) ||\r
+ (ExtContextEntry[Index2].Uint256.Uint64_3 != 0) || (ExtContextEntry[Index2].Uint256.Uint64_4 != 0)) {\r
+ DEBUG ((DEBUG_INFO," ExtContextEntryUpper(0x%02x) D%02xF%02x - 0x%016lx %016lx %016lx %016lx\n",\r
+ Index2, (Index2 + 128) >> 3, (Index2 + 128) & 0x7, ExtContextEntry[Index2].Uint256.Uint64_4, ExtContextEntry[Index2].Uint256.Uint64_3, ExtContextEntry[Index2].Uint256.Uint64_2, ExtContextEntry[Index2].Uint256.Uint64_1));\r
+ }\r
+ if (ExtContextEntry[Index2].Bits.Present == 0) {\r
+ continue;\r
+ }\r
+ }\r
+ }\r
+ DEBUG ((DEBUG_INFO,"=========================\n"));\r
+}\r
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