/** @file
  UEFI Component Name 2 Protocol as defined in the UEFI 2.1 specification.
  This protocol is used to retrieve user readable names of drivers
  and controllers managed by UEFI Drivers.

  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef __EFI_COMPONENT_NAME2_H__
#define __EFI_COMPONENT_NAME2_H__

///
/// Global ID for the Component Name Protocol
///
#define EFI_COMPONENT_NAME2_PROTOCOL_GUID \
  {0x6a7a5cff, 0xe8d9, 0x4f70, { 0xba, 0xda, 0x75, 0xab, 0x30, 0x25, 0xce, 0x14 } }

typedef struct _EFI_COMPONENT_NAME2_PROTOCOL EFI_COMPONENT_NAME2_PROTOCOL;

/**
  Retrieves a string that is the user readable name of
  the EFI Driver.

  @param  This       A pointer to the
                     EFI_COMPONENT_NAME2_PROTOCOL instance.

  @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 language code
                     format.

  @param  DriverName A pointer to the string to return.
                     This string is the name of the
                     driver specified by This in the language
                     specified by Language.

  @retval EFI_SUCCESS           The 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.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_COMPONENT_NAME2_GET_DRIVER_NAME)(
  IN EFI_COMPONENT_NAME2_PROTOCOL          *This,
  IN  CHAR8                                *Language,
  OUT CHAR16                               **DriverName
  );

/**
  Retrieves a string that is the user readable name of
  the controller that is being managed by an EFI Driver.

  @param  This             A pointer to the
                           EFI_COMPONENT_NAME2_PROTOCOL instance.

  @param  ControllerHandle The handle of a controller that the
                           driver specified by This is managing.
                           This handle specifies the controller
                           whose name is to be returned.

  @param  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 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         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 language code
                           format.

  @param  ControllerName   A pointer to the string to return.
                           This 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 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.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME)(
  IN EFI_COMPONENT_NAME2_PROTOCOL *This,
  IN  EFI_HANDLE                  ControllerHandle,
  IN  EFI_HANDLE                  ChildHandle        OPTIONAL,
  IN  CHAR8                       *Language,
  OUT CHAR16                      **ControllerName
  );

///
/// This protocol is used to retrieve user readable names of drivers
/// and controllers managed by UEFI Drivers.
///
struct _EFI_COMPONENT_NAME2_PROTOCOL {
  EFI_COMPONENT_NAME2_GET_DRIVER_NAME        GetDriverName;
  EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME    GetControllerName;

  ///
  /// A Null-terminated ASCII string array that contains one or more
  /// supported language codes. This is the list of language codes that
  /// this protocol supports. The number of languages supported by a
  /// driver is up to the driver writer. SupportedLanguages is
  /// specified in RFC 4646 format.
  ///
  CHAR8    *SupportedLanguages;
};

extern EFI_GUID  gEfiComponentName2ProtocolGuid;

#endif