C++ (Cpp) ParseDmarAcpiTableDrhd Examples

Example #1

File: IntelVTdPmrPei.c Project: mdaniel/virtualbox-org-svn-vbox-trunk

/**
  Initializes the Intel VTd Info.

  @retval EFI_SUCCESS            Usb bot driver is successfully initialized.
  @retval EFI_OUT_OF_RESOURCES   Can't initialize the driver.

**/
EFI_STATUS
InitVTdInfo (
  VOID
  )
{
  EFI_STATUS                  Status;
  EFI_ACPI_DMAR_HEADER        *AcpiDmarTable;
  VOID                        *Hob;

  Status = PeiServicesLocatePpi (
             &gEdkiiVTdInfoPpiGuid,
             0,
             NULL,
             (VOID **)&AcpiDmarTable
             );
  ASSERT_EFI_ERROR(Status);

  DumpAcpiDMAR (AcpiDmarTable);

  //
  // Clear old VTdInfo Hob.
  //
  Hob = GetFirstGuidHob (&mVTdInfoGuid);
  if (Hob != NULL) {
    ZeroMem (&((EFI_HOB_GUID_TYPE *)Hob)->Name, sizeof(EFI_GUID));
  }

  //
  // Get DMAR information to local VTdInfo
  //
  Status = ParseDmarAcpiTableDrhd (AcpiDmarTable);
  if (EFI_ERROR(Status)) {
    return Status;
  }

  //
  // NOTE: Do not parse RMRR here, because RMRR may cause PMR programming.
  //

  return EFI_SUCCESS;
}

Example #2

File: DmaProtection.c Project: shijunjing/edk2

/**
  Setup VTd engine.
**/
VOID
SetupVtd (
  VOID
  )
{
  EFI_STATUS      Status;
  VOID            *PciEnumerationComplete;
  UINTN           Index;
  UINT64          Below4GMemoryLimit;
  UINT64          Above4GMemoryLimit;

  //
  // PCI Enumeration must be done
  //
  Status = gBS->LocateProtocol (
                  &gEfiPciEnumerationCompleteProtocolGuid,
                  NULL,
                  &PciEnumerationComplete
                  );
  ASSERT_EFI_ERROR (Status);

  ReturnUefiMemoryMap (&Below4GMemoryLimit, &Above4GMemoryLimit);
  Below4GMemoryLimit = ALIGN_VALUE_UP(Below4GMemoryLimit, SIZE_256MB);
  DEBUG ((DEBUG_INFO, " Adjusted Below4GMemoryLimit: 0x%016lx\n", Below4GMemoryLimit));

  mBelow4GMemoryLimit = Below4GMemoryLimit;
  mAbove4GMemoryLimit = Above4GMemoryLimit;

  //
  // 1. setup
  //
  DEBUG ((DEBUG_INFO, "ParseDmarAcpiTable\n"));
  Status = ParseDmarAcpiTableDrhd ();
  if (EFI_ERROR (Status)) {
    return;
  }
  DEBUG ((DEBUG_INFO, "PrepareVtdConfig\n"));
  PrepareVtdConfig ();

  //
  // 2. initialization
  //
  DEBUG ((DEBUG_INFO, "SetupTranslationTable\n"));
  Status = SetupTranslationTable ();
  if (EFI_ERROR (Status)) {
    return;
  }

  InitializePlatformVTdPolicy ();

  ParseDmarAcpiTableRmrr ();

  if ((PcdGet8 (PcdVTdPolicyPropertyMask) & BIT2) == 0) {
    //
    // Support IOMMU access attribute request recording before DMAR table is installed.
    // Here is to process the requests.
    //
    ProcessRequestedAccessAttribute ();
  }

  for (Index = 0; Index < mVtdUnitNumber; Index++) {
    DEBUG ((DEBUG_INFO,"VTD Unit %d (Segment: %04x)\n", Index, mVtdUnitInformation[Index].Segment));
    if (mVtdUnitInformation[Index].ExtRootEntryTable != NULL) {
      DumpDmarExtContextEntryTable (mVtdUnitInformation[Index].ExtRootEntryTable);
    }
    if (mVtdUnitInformation[Index].RootEntryTable != NULL) {
      DumpDmarContextEntryTable (mVtdUnitInformation[Index].RootEntryTable);
    }
  }

  //
  // 3. enable
  //
  DEBUG ((DEBUG_INFO, "EnableDmar\n"));
  Status = EnableDmar ();
  if (EFI_ERROR (Status)) {
    return;
  }
  DEBUG ((DEBUG_INFO, "DumpVtdRegs\n"));
  DumpVtdRegsAll ();
}