175 lines
6.8 KiB
C
175 lines
6.8 KiB
C
/** @file
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Component Name functions implementation for XenBus Bus driver.
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Copyright (C) 2014, Citrix Ltd.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "XenBusDxe.h"
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///
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/// Component Name Protocol instance
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///
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GLOBAL_REMOVE_IF_UNREFERENCED
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EFI_COMPONENT_NAME_PROTOCOL gXenBusDxeComponentName = {
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(EFI_COMPONENT_NAME_GET_DRIVER_NAME) XenBusDxeComponentNameGetDriverName,
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(EFI_COMPONENT_NAME_GET_CONTROLLER_NAME)XenBusDxeComponentNameGetControllerName,
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"eng"
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};
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///
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/// Component Name 2 Protocol instance
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///
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GLOBAL_REMOVE_IF_UNREFERENCED
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EFI_COMPONENT_NAME2_PROTOCOL gXenBusDxeComponentName2 = {
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XenBusDxeComponentNameGetDriverName,
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XenBusDxeComponentNameGetControllerName,
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"en"
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};
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///
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/// Table of driver names
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///
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GLOBAL_REMOVE_IF_UNREFERENCED
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EFI_UNICODE_STRING_TABLE mXenBusDxeDriverNameTable[] = {
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{ "eng;en", (CHAR16 *)L"XenBus Bus Driver" },
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{ NULL, NULL }
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};
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///
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/// Table of controller names
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///
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GLOBAL_REMOVE_IF_UNREFERENCED
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EFI_UNICODE_STRING_TABLE mXenBusDxeControllerNameTable[] = {
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{ "eng;en", (CHAR16 *)L"XenBus Controller" },
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{ NULL, NULL }
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};
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/**
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Retrieves a Unicode string that is the user-readable name of the EFI Driver.
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@param This A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
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@param Language A pointer to a three-character ISO 639-2 language identifier.
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This is the language of the driver name that that the caller
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is requesting, and it must match one of the languages specified
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in SupportedLanguages. The number of languages supported by a
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driver is up to the driver writer.
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@param DriverName A pointer to the Unicode string to return. This Unicode string
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is the name of the driver specified by This in the language
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specified by Language.
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@retval EFI_SUCCESS The Unicode string for the Driver specified by This
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and the language specified by Language was returned
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in DriverName.
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@retval EFI_INVALID_PARAMETER Language is NULL.
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@retval EFI_INVALID_PARAMETER DriverName is NULL.
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@retval EFI_UNSUPPORTED The driver specified by This does not support the
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language specified by Language.
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**/
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EFI_STATUS
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EFIAPI
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XenBusDxeComponentNameGetDriverName (
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IN EFI_COMPONENT_NAME2_PROTOCOL *This,
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IN CHAR8 *Language,
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OUT CHAR16 **DriverName
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)
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{
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return LookupUnicodeString2 (
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Language,
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This->SupportedLanguages,
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mXenBusDxeDriverNameTable,
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DriverName,
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(BOOLEAN)(This != &gXenBusDxeComponentName2)
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);
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}
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/**
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Retrieves a Unicode string that is the user readable name of the controller
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that is being managed by an EFI Driver.
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@param This A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
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@param ControllerHandle The handle of a controller that the driver specified by
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This is managing. This handle specifies the controller
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whose name is to be returned.
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@param ChildHandle The handle of the child controller to retrieve the name
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of. This is an optional parameter that may be NULL. It
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will be NULL for device drivers. It will also be NULL
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for a bus drivers that wish to retrieve the name of the
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bus controller. It will not be NULL for a bus driver
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that wishes to retrieve the name of a child controller.
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@param Language A pointer to a three character ISO 639-2 language
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identifier. This is the language of the controller name
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that the caller is requesting, and it must match one
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of the languages specified in SupportedLanguages. The
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number of languages supported by a driver is up to the
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driver writer.
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@param ControllerName A pointer to the Unicode string to return. This Unicode
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string is the name of the controller specified by
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ControllerHandle and ChildHandle in the language specified
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by Language, from the point of view of the driver specified
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by This.
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@retval EFI_SUCCESS The Unicode string for the user-readable name in the
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language specified by Language for the driver
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specified by This was returned in DriverName.
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@retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
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@retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid EFI_HANDLE.
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@retval EFI_INVALID_PARAMETER Language is NULL.
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@retval EFI_INVALID_PARAMETER ControllerName is NULL.
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@retval EFI_UNSUPPORTED The driver specified by This is not currently managing
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the controller specified by ControllerHandle and
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ChildHandle.
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@retval EFI_UNSUPPORTED The driver specified by This does not support the
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language specified by Language.
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**/
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EFI_STATUS
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EFIAPI
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XenBusDxeComponentNameGetControllerName (
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IN EFI_COMPONENT_NAME2_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_HANDLE ChildHandle OPTIONAL,
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IN CHAR8 *Language,
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OUT CHAR16 **ControllerName
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)
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{
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EFI_STATUS Status;
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if (ChildHandle != NULL) {
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// TODO Get controller name for a child.
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return EFI_UNSUPPORTED;
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}
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//
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// Make sure this driver is currently managing ControllerHandle
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//
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Status = EfiTestManagedDevice (
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ControllerHandle,
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gXenBusDxeDriverBinding.DriverBindingHandle,
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&gXenIoProtocolGuid
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Lookup name of controller specified by ControllerHandle
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//
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return LookupUnicodeString2 (
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Language,
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This->SupportedLanguages,
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mXenBusDxeControllerNameTable,
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ControllerName,
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(BOOLEAN)(This != &gXenBusDxeComponentName2)
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);
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}
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