/** Retrieves a Unicode string that is the user readable name of the controller that is being managed by a driver. This function retrieves the user readable name of the controller specified by ControllerHandle and ChildHandle 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 controller name is returned in ControllerName, and EFI_SUCCESS is returned. If the driver specified by This is not currently managing the controller specified by ControllerHandle and ChildHandle, then EFI_UNSUPPORTED 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 ControllerHandle[in] 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[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 SdDxeComponentNameGetControllerName ( 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; SD_DEVICE *Device; EFI_UNICODE_STRING_TABLE *ControllerNameTable; // // Make sure this driver is currently managing ControllHandle // Status = EfiTestManagedDevice ( ControllerHandle, gSdDxeDriverBinding.DriverBindingHandle, &gEfiSdMmcPassThruProtocolGuid ); if (EFI_ERROR (Status)) { return Status; } ControllerNameTable = mSdDxeControllerNameTable; if (ChildHandle != NULL) { Status = EfiTestChildHandle ( ControllerHandle, ChildHandle, &gEfiSdMmcPassThruProtocolGuid ); if (EFI_ERROR (Status)) { return Status; } // // Get the child context // Status = gBS->OpenProtocol ( ChildHandle, &gEfiBlockIoProtocolGuid, (VOID **) &BlockIo, gSdDxeDriverBinding.DriverBindingHandle, ChildHandle, EFI_OPEN_PROTOCOL_GET_PROTOCOL ); if (EFI_ERROR (Status)) { return EFI_UNSUPPORTED; } Device = SD_DEVICE_DATA_FROM_BLKIO (BlockIo); ControllerNameTable = Device->ControllerNameTable; } return LookupUnicodeString2 ( Language, This->SupportedLanguages, ControllerNameTable, ControllerName, (BOOLEAN)(This == &gSdDxeComponentName) ); }
/** Stops a device controller or a bus controller. The Stop() function is designed to be invoked from the EFI boot service DisconnectController(). As a result, much of the error checking on the parameters to Stop() has been moved into this common boot service. It is legal to call Stop() from other locations, but the following calling restrictions must be followed or the system behavior will not be deterministic. 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this same driver's Start() function. 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid EFI_HANDLE. In addition, all of these handles must have been created in this driver's Start() function, and the Start() function must have called OpenProtocol() on ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER. @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. @param[in] ControllerHandle A handle to the device being stopped. The handle must support a bus specific I/O protocol for the driver to use to stop the device. @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer. @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL if NumberOfChildren is 0. @retval EFI_SUCCESS The device was stopped. @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error. **/ EFI_STATUS EFIAPI SdDxeDriverBindingStop ( IN EFI_DRIVER_BINDING_PROTOCOL *This, IN EFI_HANDLE Controller, IN UINTN NumberOfChildren, IN EFI_HANDLE *ChildHandleBuffer ) { EFI_STATUS Status; BOOLEAN AllChildrenStopped; UINTN Index; SD_DRIVER_PRIVATE_DATA *Private; SD_DEVICE *Device; EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru; EFI_BLOCK_IO2_PROTOCOL *BlockIo2; EFI_BLOCK_IO_PROTOCOL *BlockIo; LIST_ENTRY *Link; LIST_ENTRY *NextLink; SD_REQUEST *Request; EFI_TPL OldTpl; if (NumberOfChildren == 0) { Status = gBS->OpenProtocol ( Controller, &gEfiCallerIdGuid, (VOID **) &Private, This->DriverBindingHandle, Controller, EFI_OPEN_PROTOCOL_GET_PROTOCOL ); if (EFI_ERROR (Status)) { return EFI_DEVICE_ERROR; } gBS->UninstallProtocolInterface ( Controller, &gEfiCallerIdGuid, Private ); gBS->CloseProtocol ( Controller, &gEfiSdMmcPassThruProtocolGuid, This->DriverBindingHandle, Controller ); FreePool (Private); return EFI_SUCCESS; } AllChildrenStopped = TRUE; for (Index = 0; Index < NumberOfChildren; Index++) { BlockIo = NULL; BlockIo2 = NULL; Status = gBS->OpenProtocol ( ChildHandleBuffer[Index], &gEfiBlockIoProtocolGuid, (VOID **) &BlockIo, This->DriverBindingHandle, Controller, EFI_OPEN_PROTOCOL_GET_PROTOCOL ); if (EFI_ERROR (Status)) { Status = gBS->OpenProtocol ( ChildHandleBuffer[Index], &gEfiBlockIo2ProtocolGuid, (VOID **) &BlockIo2, This->DriverBindingHandle, Controller, EFI_OPEN_PROTOCOL_GET_PROTOCOL ); if (EFI_ERROR (Status)) { AllChildrenStopped = FALSE; continue; } } if (BlockIo != NULL) { Device = SD_DEVICE_DATA_FROM_BLKIO (BlockIo); } else { ASSERT (BlockIo2 != NULL); Device = SD_DEVICE_DATA_FROM_BLKIO2 (BlockIo2); } // // Free all on-going async tasks. // OldTpl = gBS->RaiseTPL (TPL_NOTIFY); for (Link = GetFirstNode (&Device->Queue); !IsNull (&Device->Queue, Link); Link = NextLink) { NextLink = GetNextNode (&Device->Queue, Link); RemoveEntryList (Link); Request = SD_REQUEST_FROM_LINK (Link); gBS->CloseEvent (Request->Event); Request->Token->TransactionStatus = EFI_ABORTED; if (Request->IsEnd) { gBS->SignalEvent (Request->Token->Event); } FreePool (Request); } gBS->RestoreTPL (OldTpl); // // Close the child handle // Status = gBS->CloseProtocol ( Controller, &gEfiSdMmcPassThruProtocolGuid, This->DriverBindingHandle, ChildHandleBuffer[Index] ); Status = gBS->UninstallMultipleProtocolInterfaces ( ChildHandleBuffer[Index], &gEfiDevicePathProtocolGuid, Device->DevicePath, &gEfiBlockIoProtocolGuid, &Device->BlockIo, &gEfiBlockIo2ProtocolGuid, &Device->BlockIo2, &gEfiEraseBlockProtocolGuid, &Device->EraseBlock, &gEfiDiskInfoProtocolGuid, &Device->DiskInfo, NULL ); if (EFI_ERROR (Status)) { AllChildrenStopped = FALSE; gBS->OpenProtocol ( Controller, &gEfiSdMmcPassThruProtocolGuid, (VOID **)&PassThru, This->DriverBindingHandle, ChildHandleBuffer[Index], EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER ); } else { FreePool (Device->DevicePath); FreeUnicodeStringTable (Device->ControllerNameTable); FreePool (Device); } } if (!AllChildrenStopped) { return EFI_DEVICE_ERROR; } return EFI_SUCCESS; }