C++ LookupUnicodeString2函数代码示例

//.........这里部分代码省略.........
                                child controller.

  @param[in]  Language          A pointer to a Null-terminated ASCII string
                                array indicating the language.  This is the
                                language of the driver name that the caller is
                                requesting, and it must match one of the
                                languages specified in SupportedLanguages. The
                                number of languages supported by a driver is up
                                to the driver writer. Language is specified in
                                RFC 4646 or ISO 639-2 language code format.

  @param[out]  ControllerName   A pointer to the Unicode string to return.
                                This Unicode string is the name of the
                                controller specified by ControllerHandle and
                                ChildHandle in the language specified by
                                Language from the point of view of the driver
                                specified by This.

  @retval EFI_SUCCESS           The Unicode string for the user readable name in
                                the language specified by Language for the
                                driver specified by This was returned in
                                DriverName.

  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.

  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
                                EFI_HANDLE.

  @retval EFI_INVALID_PARAMETER Language is NULL.

  @retval EFI_INVALID_PARAMETER ControllerName is NULL.

  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
                                managing the controller specified by
                                ControllerHandle and ChildHandle.

  @retval EFI_UNSUPPORTED       The driver specified by This does not support
                                the language specified by Language.

**/
EFI_STATUS
EFIAPI
PxeBcComponentNameGetControllerName (
  IN  EFI_COMPONENT_NAME_PROTOCOL  * This,
  IN  EFI_HANDLE                   ControllerHandle,
  IN  EFI_HANDLE                   ChildHandle        OPTIONAL,
  IN  CHAR8                        *Language,
  OUT CHAR16                       **ControllerName
  )
{
  EFI_PXE_BASE_CODE_PROTOCOL  *PxeBc;
  EFI_HANDLE                  NicHandle;
  EFI_STATUS                  Status;

  if (ControllerHandle == NULL || ChildHandle != NULL) {
    return EFI_UNSUPPORTED;
  }

  NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiArpProtocolGuid);
  if (NicHandle == NULL) {
    NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiDhcp4ProtocolGuid);

    if (NicHandle == NULL) {
      NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiIp4ProtocolGuid);

      if (NicHandle == NULL) {
        NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiUdp4ProtocolGuid);

        if (NicHandle == NULL) {
          NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiMtftp4ProtocolGuid);

          if (NicHandle == NULL) {
            return EFI_UNSUPPORTED;
          }
        }
      }
    }
  }

  Status = gBS->OpenProtocol (
                  NicHandle,
                  &gEfiPxeBaseCodeProtocolGuid,
                  (VOID **) &PxeBc,
                  NULL,
                  NULL,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );

  if (EFI_ERROR (Status)) {
    return Status;
  }

  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           mPxeBcControllerNameTable,
           ControllerName,
           (BOOLEAN)(This == &gPxeBcComponentName)
           );
}

//.........这里部分代码省略.........
                                driver that wishes to retrieve the name of a
                                child controller.

  @param  Language              A pointer to a Null-terminated ASCII string
                                array indicating the language.  This is the
                                language of the driver name that the caller is
                                requesting, and it must match one of the
                                languages specified in SupportedLanguages. The
                                number of languages supported by a driver is up
                                to the driver writer. Language is specified in
                                RFC 4646 or ISO 639-2 language code format.

  @param  ControllerName        A pointer to the Unicode string to return.
                                This Unicode string is the name of the
                                controller specified by ControllerHandle and
                                ChildHandle in the language specified by
                                Language from the point of view of the driver
                                specified by This.

  @retval EFI_SUCCESS           The Unicode string for the user readable name in
                                the language specified by Language for the
                                driver specified by This was returned in
                                DriverName.

  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.

  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
                                EFI_HANDLE.

  @retval EFI_INVALID_PARAMETER Language is NULL.

  @retval EFI_INVALID_PARAMETER ControllerName is NULL.

  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
                                managing the controller specified by
                                ControllerHandle and ChildHandle.

  @retval EFI_UNSUPPORTED       The driver specified by This does not support
                                the language specified by Language.

**/
EFI_STATUS
EFIAPI
ScsiDiskComponentNameGetControllerName (
  IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
  IN  EFI_HANDLE                                      ControllerHandle,
  IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
  IN  CHAR8                                           *Language,
  OUT CHAR16                                          **ControllerName
  )
{
  EFI_STATUS            Status;
  SCSI_DISK_DEV         *ScsiDiskDevice;
  EFI_BLOCK_IO_PROTOCOL *BlockIo;

  //
  // This is a device driver, so ChildHandle must be NULL.
  //
  if (ChildHandle != NULL) {
    return EFI_UNSUPPORTED;
  }

  //
  // Make sure this driver is currently managing ControllerHandle
  //
  Status = EfiTestManagedDevice (
             ControllerHandle,
             gScsiDiskDriverBinding.DriverBindingHandle,
             &gEfiScsiIoProtocolGuid
             );
  if (EFI_ERROR (Status)) {
    return Status;
  }
  //
  // Get the device context
  //
  Status = gBS->OpenProtocol (
                  ControllerHandle,
                  &gEfiBlockIoProtocolGuid,
                  (VOID **) &BlockIo,
                  gScsiDiskDriverBinding.DriverBindingHandle,
                  ControllerHandle,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );

  if (EFI_ERROR (Status)) {
    return Status;
  }

  ScsiDiskDevice = SCSI_DISK_DEV_FROM_BLKIO (BlockIo);

  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           ScsiDiskDevice->ControllerNameTable,
           ControllerName,
           (BOOLEAN)(This == &gScsiDiskComponentName)
           );

}

//.........这里部分代码省略.........
                                driver that wishes to retrieve the name of a
                                child controller.

  @param  Language[in]          A pointer to a Null-terminated ASCII string
                                array indicating the language.  This is the
                                language of the driver name that the caller is
                                requesting, and it must match one of the
                                languages specified in SupportedLanguages. The
                                number of languages supported by a driver is up
                                to the driver writer. Language is specified in
                                RFC 4646 or ISO 639-2 language code format.

  @param  ControllerName[out]   A pointer to the Unicode string to return.
                                This Unicode string is the name of the
                                controller specified by ControllerHandle and
                                ChildHandle in the language specified by
                                Language from the point of view of the driver
                                specified by This.

  @retval EFI_SUCCESS           The Unicode string for the user readable name in
                                the language specified by Language for the
                                driver specified by This was returned in
                                DriverName.

  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.

  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
                                EFI_HANDLE.

  @retval EFI_INVALID_PARAMETER Language is NULL.

  @retval EFI_INVALID_PARAMETER ControllerName is NULL.

  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
                                managing the controller specified by
                                ControllerHandle and ChildHandle.

  @retval EFI_UNSUPPORTED       The driver specified by This does not support
                                the language specified by Language.

**/
EFI_STATUS
EFIAPI
SimpleNetworkComponentNameGetControllerName (
  IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
  IN  EFI_HANDLE                                      ControllerHandle,
  IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
  IN  CHAR8                                           *Language,
  OUT CHAR16                                          **ControllerName
  )
{
  EFI_STATUS                    Status;
  EFI_SIMPLE_NETWORK_PROTOCOL   *Snp;
  
  if (ChildHandle != NULL) {
    return EFI_UNSUPPORTED;
  }

  //
  // Make sure this driver is currently managing ControllHandle
  //
  Status = EfiTestManagedDevice (
             ControllerHandle,
             gSimpleNetworkDriverBinding.DriverBindingHandle,
             &gEfiSimpleNetworkProtocolGuid
             );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  // 
  // Retrieve an instance of a produced protocol from ControllerHandle
  // 
  Status = gBS->OpenProtocol (
                  ControllerHandle,
                  &gEfiSimpleNetworkProtocolGuid,
                  (VOID **)&Snp,
                  NULL,
                  NULL,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );
  if (EFI_ERROR (Status)) {
    return Status;
  }
  //
  // Update the component name for this child handle.
  //
  Status = UpdateName (Snp);
  if (EFI_ERROR (Status)) {
    return Status;
  }

  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           gSimpleNetworkControllerNameTable,
           ControllerName,
           (BOOLEAN)(This == &gSimpleNetworkComponentName)
           );
}

//.........这里部分代码省略.........
                                controller.  It will not be NULL for a bus
                                driver that wishes to retrieve the name of a
                                child controller.

  @param  Language[in]          A pointer to a Null-terminated ASCII string
                                array indicating the language.  This is the
                                language of the driver name that the caller is
                                requesting, and it must match one of the
                                languages specified in SupportedLanguages. The
                                number of languages supported by a driver is up
                                to the driver writer. Language is specified in
                                RFC 4646 or ISO 639-2 language code format.

  @param  ControllerName[out]   A pointer to the Unicode string to return.
                                This Unicode string is the name of the
                                controller specified by ControllerHandle and
                                ChildHandle in the language specified by
                                Language from the point of view of the driver
                                specified by This.

  @retval EFI_SUCCESS           The Unicode string for the user readable name in
                                the language specified by Language for the
                                driver specified by This was returned in
                                DriverName.

  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.

  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
                                EFI_HANDLE.

  @retval EFI_INVALID_PARAMETER Language is NULL.

  @retval EFI_INVALID_PARAMETER ControllerName is NULL.

  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
                                managing the controller specified by
                                ControllerHandle and ChildHandle.

  @retval EFI_UNSUPPORTED       The driver specified by This does not support
                                the language specified by Language.

**/
EFI_STATUS
EFIAPI
IsaSerialComponentNameGetControllerName (
  IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
  IN  EFI_HANDLE                                      ControllerHandle,
  IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
  IN  CHAR8                                           *Language,
  OUT CHAR16                                          **ControllerName
  )
{
  EFI_STATUS              Status;
  EFI_SERIAL_IO_PROTOCOL  *SerialIo;
  SERIAL_DEV              *SerialDevice;

  //
  // This is a device driver, so ChildHandle must be NULL.
  //
  if (ChildHandle != NULL) {
    return EFI_UNSUPPORTED;
  }
  //
  // Make sure this driver is currently managing ControllerHandle
  //
  Status = EfiTestManagedDevice (
             ControllerHandle,
             gSerialControllerDriver.DriverBindingHandle,
             &gEfiIsaIoProtocolGuid
             );
  if (EFI_ERROR (Status)) {
    return Status;
  }
  //
  // Get the Block I/O Protocol on Controller
  //
  Status = gBS->OpenProtocol (
                  ControllerHandle,
                  &gEfiSerialIoProtocolGuid,
                  (VOID **) &SerialIo,
                  gSerialControllerDriver.DriverBindingHandle,
                  ControllerHandle,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );
  if (EFI_ERROR (Status)) {
    return Status;
  }
  //
  // Get the Serial Controller's Device structure
  //
  SerialDevice = SERIAL_DEV_FROM_THIS (SerialIo);

  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           SerialDevice->ControllerNameTable,
           ControllerName,
           (BOOLEAN)(This == &gIsaSerialComponentName)
           );
}

//.........这里部分代码省略.........
                                that wish to retrieve the name of the bus
                                controller.  It will not be NULL for a bus
                                driver that wishes to retrieve the name of a
                                child controller.

  @param  Language[in]          A pointer to a Null-terminated ASCII string
                                array indicating the language.  This is the
                                language of the driver name that the caller is
                                requesting, and it must match one of the
                                languages specified in SupportedLanguages. The
                                number of languages supported by a driver is up
                                to the driver writer. Language is specified in
                                RFC 4646 or ISO 639-2 language code format.

  @param  ControllerName[out]   A pointer to the Unicode string to return.
                                This Unicode string is the name of the
                                controller specified by ControllerHandle and
                                ChildHandle in the language specified by
                                Language from the point of view of the driver
                                specified by This.

  @retval EFI_SUCCESS           The Unicode string for the user readable name in
                                the language specified by Language for the
                                driver specified by This was returned in
                                DriverName.

  @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.

  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
                                EFI_HANDLE.

  @retval EFI_INVALID_PARAMETER Language is NULL.

  @retval EFI_INVALID_PARAMETER ControllerName is NULL.

  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
                                managing the controller specified by
                                ControllerHandle and ChildHandle.

  @retval EFI_UNSUPPORTED       The driver specified by This does not support
                                the language specified by Language.

**/
EFI_STATUS
EFIAPI
EmuGopComponentNameGetControllerName (
  IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
  IN  EFI_HANDLE                                      ControllerHandle,
  IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
  IN  CHAR8                                           *Language,
  OUT CHAR16                                          **ControllerName
  )
{
  EFI_STATUS                    Status;
  EFI_GRAPHICS_OUTPUT_PROTOCOL  *GraphicsOutput;
  GOP_PRIVATE_DATA              *Private;

  //
  // This is a device driver, so ChildHandle must be NULL.
  //
  if (ChildHandle != NULL) {
    return EFI_UNSUPPORTED;
  }

  //
  // Make sure this driver is currently managing ControllerHandle
  //
  Status = EfiTestManagedDevice (
             ControllerHandle,
             gEmuGopDriverBinding.DriverBindingHandle,
             &gEmuIoThunkProtocolGuid
             );
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }
  //
  // Get our context back
  //
  Status = gBS->OpenProtocol (
                  ControllerHandle,
                  &gEfiGraphicsOutputProtocolGuid,
                  (VOID **)&GraphicsOutput,
                  gEmuGopDriverBinding.DriverBindingHandle,
                  ControllerHandle,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  Private = GOP_PRIVATE_DATA_FROM_THIS (GraphicsOutput);

  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           Private->ControllerNameTable,
           ControllerName,
           (BOOLEAN)(This == &gEmuGopComponentName)
           );
}

//.........这里部分代码省略.........
                                drivers.  It will also be NULL for a bus drivers
                                that wish to retrieve the name of the bus
                                controller.  It will not be NULL for a bus
                                driver that wishes to retrieve the name of a
                                child controller.

  @param  Language[in]          A pointer to a Null-terminated ASCII string
                                array indicating the language.  This is the
                                language of the driver name that the caller is
                                requesting, and it must match one of the
                                languages specified in SupportedLanguages. The
                                number of languages supported by a driver is up
                                to the driver writer. Language is specified in
                                RFC 4646 or ISO 639-2 language code format.

  @param  ControllerName[out]   A pointer to the Unicode string to return.
                                This Unicode string is the name of the
                                controller specified by ControllerHandle and
                                ChildHandle in the language specified by
                                Language from the point of view of the driver
                                specified by This.

  @retval EFI_SUCCESS           The Unicode string for the user readable name in
                                the language specified by Language for the
                                driver specified by This was returned in
                                DriverName.

  @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.

  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
                                EFI_HANDLE.

  @retval EFI_INVALID_PARAMETER Language is NULL.

  @retval EFI_INVALID_PARAMETER ControllerName is NULL.

  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
                                managing the controller specified by
                                ControllerHandle and ChildHandle.

  @retval EFI_UNSUPPORTED       The driver specified by This does not support
                                the language specified by Language.

**/
EFI_STATUS
EFIAPI
WinNtBlockIoComponentNameGetControllerName (
  IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
  IN  EFI_HANDLE                                      ControllerHandle,
  IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
  IN  CHAR8                                           *Language,
  OUT CHAR16                                          **ControllerName
  )
{
  EFI_STATUS              Status;
  EFI_BLOCK_IO_PROTOCOL   *BlockIo;
  WIN_NT_BLOCK_IO_PRIVATE *Private;

  //
  // This is a device driver, so ChildHandle must be NULL.
  //
  if (ChildHandle != NULL) {
    return EFI_UNSUPPORTED;
  }
  //
  // Make sure this driver is currently managing ControllerHandle
  //
  Status = EfiTestManagedDevice (
             ControllerHandle,
             gWinNtBlockIoDriverBinding.DriverBindingHandle,
             &gEfiWinNtIoProtocolGuid
             );
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }
  //
  // Get our context back
  //
  Status = gBS->OpenProtocol (
                  ControllerHandle,
                  &gEfiBlockIoProtocolGuid,
                  (VOID **) &BlockIo,
                  gWinNtBlockIoDriverBinding.DriverBindingHandle,
                  ControllerHandle,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  Private = WIN_NT_BLOCK_IO_PRIVATE_DATA_FROM_THIS (BlockIo);

  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           Private->ControllerNameTable,
           ControllerName,
           (BOOLEAN)(This == &gWinNtBlockIoComponentName)
           );
}

//.........这里部分代码省略.........
                                may be NULL.  It will be NULL for device
                                drivers.  It will also be NULL for a bus drivers
                                that wish to retrieve the name of the bus
                                controller.  It will not be NULL for a bus
                                driver that wishes to retrieve the name of a
                                child controller.

  @param[in]  Language          A pointer to a Null-terminated ASCII string
                                array indicating the language.  This is the
                                language of the driver name that the caller is
                                requesting, and it must match one of the
                                languages specified in SupportedLanguages. The
                                number of languages supported by a driver is up
                                to the driver writer. Language is specified in
                                RFC 4646 or ISO 639-2 language code format.

  @param[out]  ControllerName   A pointer to the Unicode string to return.
                                This Unicode string is the name of the
                                controller specified by ControllerHandle and
                                ChildHandle in the language specified by
                                Language from the point of view of the driver
                                specified by This.

  @retval EFI_SUCCESS           The Unicode string for the user readable name in
                                the language specified by Language for the
                                driver specified by This was returned in
                                DriverName.

  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.

  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
                                EFI_HANDLE.

  @retval EFI_INVALID_PARAMETER Language is NULL.

  @retval EFI_INVALID_PARAMETER ControllerName is NULL.

  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
                                managing the controller specified by
                                ControllerHandle and ChildHandle.

  @retval EFI_UNSUPPORTED       The driver specified by This does not support
                                the language specified by Language.

**/
EFI_STATUS
EFIAPI
ArpComponentNameGetControllerName (
  IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
  IN  EFI_HANDLE                                      ControllerHandle,
  IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
  IN  CHAR8                                           *Language,
  OUT CHAR16                                          **ControllerName
  )
{
  EFI_STATUS                    Status;
  EFI_ARP_PROTOCOL              *Arp;

  //
  // Only provide names for child handles.
  //
  if (ChildHandle == NULL) {
    return EFI_UNSUPPORTED;
  }

  //
  // Make sure this driver produced ChildHandle
  //
  Status = EfiTestChildHandle (
             ControllerHandle,
             ChildHandle,
             &gEfiManagedNetworkProtocolGuid
             );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  //
  // Retrieve an instance of a produced protocol from ChildHandle
  //
  Status = gBS->OpenProtocol (
                  ChildHandle,
                  &gEfiArpProtocolGuid,
                 (VOID **)&Arp,
                  NULL,
                  NULL,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           mArpControllerNameTable,
           ControllerName,
           (BOOLEAN)(This == &gArpComponentName)
           );
}

EFI_STATUS EFIAPI SampleComponentNameGetControllerName(IN EFI_COMPONENT_NAME_PROTOCOL *This, IN EFI_HANDLE ControllerHandle,
	IN EFI_HANDLE ChildHandle OPTIONAL, IN CHAR8 *Language, OUT CHAR16 **ControllerName) {
	if (ChildHandle != NULL)
		return EFI_UNSUPPORTED;

	EFI_STATUS efiStatus = EfiTestManagedDevice(ControllerHandle, gDriverBindingProtocol.DriverBindingHandle, &gEfiPciIoProtocolGuid);
	if (EFI_ERROR(efiStatus))
		return efiStatus;

	return LookupUnicodeString2(Language, This->SupportedLanguages, gDeviceNameTable, ControllerName, This == &gComponentNameProtocol);
}

//.........这里部分代码省略.........
  @param  ChildHandle[in]       The handle of the child controller to retrieve
                                the name of.  This is an optional parameter that
                                may be NULL.  It will be NULL for device
                                drivers.  It will also be NULL for a bus drivers
                                that wish to retrieve the name of the bus
                                controller.  It will not be NULL for a bus
                                driver that wishes to retrieve the name of a
                                child controller.

  @param  Language[in]          A pointer to a Null-terminated ASCII string
                                array indicating the language.  This is the
                                language of the driver name that the caller is
                                requesting, and it must match one of the
                                languages specified in SupportedLanguages. The
                                number of languages supported by a driver is up
                                to the driver writer. Language is specified in
                                RFC 4646 or ISO 639-2 language code format.

  @param  ControllerName[out]   A pointer to the Unicode string to return.
                                This Unicode string is the name of the
                                controller specified by ControllerHandle and
                                ChildHandle in the language specified by
                                Language from the point of view of the driver
                                specified by This.

  @retval EFI_SUCCESS           The Unicode string for the user readable name in
                                the language specified by Language for the
                                driver specified by This was returned in
                                DriverName.

  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.

  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
                                EFI_HANDLE.

  @retval EFI_INVALID_PARAMETER Language is NULL.

  @retval EFI_INVALID_PARAMETER ControllerName is NULL.

  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
                                managing the controller specified by
                                ControllerHandle and ChildHandle.

  @retval EFI_UNSUPPORTED       The driver specified by This does not support
                                the language specified by Language.

**/
EFI_STATUS
EFIAPI
Ps2MouseComponentNameGetControllerName (
    IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
    IN  EFI_HANDLE                                      ControllerHandle,
    IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
    IN  CHAR8                                           *Language,
    OUT CHAR16                                          **ControllerName
)
{
    EFI_STATUS                                  Status;
    EFI_SIMPLE_POINTER_PROTOCOL                 *SimplePointerProtocol;
    PS2_MOUSE_DEV                               *MouseDev;

    //
    // This is a device driver, so ChildHandle must be NULL.
    //
    if (ChildHandle != NULL) {
        return EFI_UNSUPPORTED;
    }
    //
    // Check Controller's handle
    //
    Status = EfiTestManagedDevice (ControllerHandle, gPS2MouseDriver.DriverBindingHandle, &gEfiSioProtocolGuid);

    if (EFI_ERROR (Status)) {
        return Status;
    }
    //
    // Get the device context
    //
    Status = gBS->OpenProtocol (
                 ControllerHandle,
                 &gEfiSimplePointerProtocolGuid,
                 (VOID **) &SimplePointerProtocol,
                 gPS2MouseDriver.DriverBindingHandle,
                 ControllerHandle,
                 EFI_OPEN_PROTOCOL_GET_PROTOCOL
             );
    if (EFI_ERROR (Status)) {
        return Status;
    }

    MouseDev = PS2_MOUSE_DEV_FROM_THIS (SimplePointerProtocol);

    return LookupUnicodeString2 (
               Language,
               This->SupportedLanguages,
               MouseDev->ControllerNameTable,
               ControllerName,
               (BOOLEAN)(This == &gPs2MouseComponentName)
           );
}

//.........这里部分代码省略.........

  @param  ChildHandle[in]       The handle of the child controller to retrieve
                                the name of.  This is an optional parameter that
                                may be NULL.  It will be NULL for device
                                drivers.  It will also be NULL for a bus drivers
                                that wish to retrieve the name of the bus
                                controller.  It will not be NULL for a bus
                                driver that wishes to retrieve the name of a
                                child controller.

  @param  Language[in]          A pointer to a Null-terminated ASCII string
                                array indicating the language.  This is the
                                language of the driver name that the caller is
                                requesting, and it must match one of the
                                languages specified in SupportedLanguages. The
                                number of languages supported by a driver is up
                                to the driver writer. Language is specified in
                                RFC 4646 or ISO 639-2 language code format.

  @param  ControllerName[out]   A pointer to the Unicode string to return.
                                This Unicode string is the name of the
                                controller specified by ControllerHandle and
                                ChildHandle in the language specified by
                                Language from the point of view of the driver
                                specified by This.

  @retval EFI_SUCCESS           The Unicode string for the user readable name in
                                the language specified by Language for the
                                driver specified by This was returned in
                                DriverName.

  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.

  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
                                EFI_HANDLE.

  @retval EFI_INVALID_PARAMETER Language is NULL.

  @retval EFI_INVALID_PARAMETER ControllerName is NULL.

  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
                                managing the controller specified by
                                ControllerHandle and ChildHandle.

  @retval EFI_UNSUPPORTED       The driver specified by This does not support
                                the language specified by Language.

**/
EFI_STATUS
EFIAPI
UndiComponentNameGetControllerName (
  IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
  IN  EFI_HANDLE                                      ControllerHandle,
  IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
  IN  CHAR8                                           *Language,
  OUT CHAR16                                          **ControllerName
  )
{
  EFI_STATUS                                Status;
  EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL *Nii;

  if (ChildHandle != NULL) {
    return EFI_UNSUPPORTED;
  }

  //
  // Make sure this driver is currently managing ControllHandle
  //
  Status = EfiTestManagedDevice (
             ControllerHandle,
             gUndiDriverBinding.DriverBindingHandle,
             &gEfiPciIoProtocolGuid
             );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  //
  // Retrieve an instance of a produced protocol from ControllerHandle
  //
  Status = gBS->OpenProtocol (
                   ControllerHandle,
                   &gEfiNetworkInterfaceIdentifierProtocolGuid_31,
                  (VOID **)&Nii,
                   NULL,
                   NULL,
                   EFI_OPEN_PROTOCOL_GET_PROTOCOL
                   );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           mUndiControllerNameTable,
           ControllerName,
           (BOOLEAN)(This == &gUndiComponentName)
           );
}

/**
    Return a human readable unicode string that identifies this driver

    @param  This            Pointer to this CompnentName protocol instance
    @param  Language        Pointer to an ascii string representing the language
                            to return the driver name in
    @param  DriverName      Pointer to fill out with the driver name string

    @retval EFI_INVALID_PARAMETER The Language string or the Driver name pointers are null
    @retval EFI_UNSUPPORTED       No driver string exists in the passed language string

**/
EFI_STATUS
EFIAPI
GraphicsOutputRotateComponentNameGetDriverName
(
    IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
    IN  CHAR8                        *Language,
    OUT CHAR16                       **DriverName)
{
    return LookupUnicodeString2(  Language,
                                  This->SupportedLanguages,
                                  mGraphicsOutputRotateDriverNameTable,
                                  DriverName,
                                  (BOOLEAN)(This == &gGraphicsOutputRotateComponentName));
}

//.........这里部分代码省略.........
                                specified by This is managing.  This handle
                                specifies the controller whose name is to be
                                returned.

  @param[in]  ChildHandle       The handle of the child controller to retrieve
                                the name of.  This is an optional parameter that
                                may be NULL.  It will be NULL for device
                                drivers.  It will also be NULL for a bus drivers
                                that wish to retrieve the name of the bus
                                controller.  It will not be NULL for a bus
                                driver that wishes to retrieve the name of a
                                child controller.

  @param[in]  Language          A pointer to a Null-terminated ASCII string
                                array indicating the language.  This is the
                                language of the driver name that the caller is
                                requesting, and it must match one of the
                                languages specified in SupportedLanguages. The
                                number of languages supported by a driver is up
                                to the driver writer. Language is specified in
                                RFC 4646 or ISO 639-2 language code format.

  @param[out]  ControllerName   A pointer to the Unicode string to return.
                                This Unicode string is the name of the
                                controller specified by ControllerHandle and
                                ChildHandle in the language specified by
                                Language from the point of view of the driver
                                specified by This.

  @retval EFI_SUCCESS           The Unicode string for the user-readable name in
                                the language specified by Language for the
                                driver specified by This was returned in
                                DriverName.

  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.

  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
                                EFI_HANDLE.

  @retval EFI_INVALID_PARAMETER Language is NULL.

  @retval EFI_INVALID_PARAMETER ControllerName is NULL.

  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
                                managing the controller specified by
                                ControllerHandle and ChildHandle.

  @retval EFI_UNSUPPORTED       The driver specified by This does not support
                                the language specified by Language.

**/
EFI_STATUS
EFIAPI
PxeBcComponentNameGetControllerName (
  IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  IN  EFI_HANDLE                   ControllerHandle,
  IN  EFI_HANDLE                   ChildHandle        OPTIONAL,
  IN  CHAR8                        *Language,
  OUT CHAR16                       **ControllerName
  )
{
  EFI_STATUS                      Status;
  EFI_HANDLE                      NicHandle;
  PXEBC_PRIVATE_PROTOCOL          *Id;

  if (ControllerHandle == NULL || ChildHandle != NULL) {
    return EFI_UNSUPPORTED;
  }

  NicHandle = PxeBcGetNicByIp4Children (ControllerHandle);
  if (NicHandle == NULL) {
    NicHandle = PxeBcGetNicByIp6Children (ControllerHandle);
    if (NicHandle == NULL) {
      return EFI_UNSUPPORTED;
    }
  }

  //
  // Try to retrieve the private data by PxeBcPrivate protocol.
  //
  Status = gBS->OpenProtocol (
                  NicHandle,
                  &gEfiCallerIdGuid,
                  (VOID **) &Id,
                  NULL,
                  NULL,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           mPxeBcControllerNameTable,
           ControllerName,
           (BOOLEAN)(This == &gPxeBcComponentName)
           );
}

/**
  Retrieves a Unicode string that is the user readable name of the driver.

  This function retrieves the user readable name of a driver in the form of a
  Unicode string. If the driver specified by This has a user readable name in
  the language specified by Language, then a pointer to the driver name is
  returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
  by This does not support the language specified by Language,
  then EFI_UNSUPPORTED is returned.

  @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
                                EFI_COMPONENT_NAME_PROTOCOL instance.

  @param  Language[in]          A pointer to a Null-terminated ASCII string
                                array indicating the language. This is the
                                language of the driver name that the caller is
                                requesting, and it must match one of the
                                languages specified in SupportedLanguages. The
                                number of languages supported by a driver is up
                                to the driver writer. Language is specified
                                in RFC 4646 or ISO 639-2 language code format.

  @param  DriverName[out]       A pointer to the Unicode string to return.
                                This Unicode string is the name of the
                                driver specified by This in the language
                                specified by Language.

  @retval EFI_SUCCESS           The Unicode string for the Driver specified by
                                This and the language specified by Language was
                                returned in DriverName.

  @retval EFI_INVALID_PARAMETER Language is NULL.

  @retval EFI_INVALID_PARAMETER DriverName is NULL.

  @retval EFI_UNSUPPORTED       The driver specified by This does not support
                                the language specified by Language.

**/
STATIC
EFI_STATUS
EFIAPI
NetsecGetDriverName (
  IN  EFI_COMPONENT_NAME2_PROTOCOL  *This,
  IN  CHAR8                         *Language,
  OUT CHAR16                        **DriverName
  )
{
  return LookupUnicodeString2 (Language,
                               This->SupportedLanguages,
                               mNetsecDriverNameTable,
                               DriverName,
                               FALSE);
}

EFI_STATUS
EFIAPI
VirtioPciGetDriverName (
  IN  EFI_COMPONENT_NAME_PROTOCOL *This,
  IN  CHAR8                       *Language,
  OUT CHAR16                      **DriverName
  )
{
  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           mDriverNameTable,
           DriverName,
           (BOOLEAN)(This == &gComponentName) // Iso639Language
           );
}

/**
  Retrieves a Unicode string that is the user readable name of the driver.

  This function retrieves the user readable name of a driver in the form of a
  Unicode string. If the driver specified by This has a user readable name in
  the language specified by Language, then a pointer to the driver name is
  returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
  by This does not support the language specified by Language,
  then EFI_UNSUPPORTED is returned.

  @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
                                EFI_COMPONENT_NAME_PROTOCOL instance.

  @param  Language[in]          A pointer to a Null-terminated ASCII string
                                array indicating the language. This is the
                                language of the driver name that the caller is
                                requesting, and it must match one of the
                                languages specified in SupportedLanguages. The
                                number of languages supported by a driver is up
                                to the driver writer. Language is specified
                                in RFC 4646 or ISO 639-2 language code format.

  @param  DriverName[out]       A pointer to the Unicode string to return.
                                This Unicode string is the name of the
                                driver specified by This in the language
                                specified by Language.

  @retval EFI_SUCCESS           The Unicode string for the Driver specified by
                                This and the language specified by Language was
                                returned in DriverName.

  @retval EFI_INVALID_PARAMETER Language is NULL.

  @retval EFI_INVALID_PARAMETER DriverName is NULL.

  @retval EFI_UNSUPPORTED       The driver specified by This does not support
                                the language specified by Language.

**/
EFI_STATUS
EFIAPI
I2cHostComponentNameGetDriverName (
  IN  EFI_COMPONENT_NAME2_PROTOCOL  *This,
  IN  CHAR8                        *Language,
  OUT CHAR16                       **DriverName
  )
{
  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           mI2cHostDriverNameTable,
           DriverName,
           (BOOLEAN)(This != &gI2cHostComponentName2)
           );
}