IntelSiliconPkg: Add VTd driver.

[mirror_edk2.git] / IntelSiliconPkg / IntelVTdDxe / TranslationTableEx.c

/** @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