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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* Copyright (c) 2026-present Eclipse ThreadX contributors |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** USBX Component */ |
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/** */ |
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/** Storage Class */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/* Include necessary system files. */ |
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#define UX_SOURCE_CODE |
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#include "ux_api.h" |
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#include "ux_host_class_storage.h" |
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#include "ux_host_stack.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _ux_host_class_storage_deactivate PORTABLE C */ |
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/* 6.1.10 */ |
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/* AUTHOR */ |
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/* */ |
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/* Chaoqiong Xiao, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function is called when this instance of the storage device */ |
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/* has been removed from the bus either directly or indirectly. The */ |
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/* bulk in\out pipes will be destroyed and the instanced removed. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* command Pointer to class command */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* Completion Status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* ux_media_close Close media */ |
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/* _ux_host_stack_endpoint_transfer_abort Abort transfer request */ |
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/* _ux_host_stack_class_instance_destroy Destroy class instance */ |
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/* _ux_utility_memory_free Free memory block */ |
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/* _ux_host_semaphore_get Get protection semaphore */ |
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/* _ux_host_semaphore_delete Delete protection semaphore */ |
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/* _ux_utility_thread_schedule_other Schedule other threads */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Storage Class */ |
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/* */ |
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/**************************************************************************/ |
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UINT _ux_host_class_storage_deactivate(UX_HOST_CLASS_COMMAND *command) |
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{ |
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UINT status; |
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UX_HOST_CLASS_STORAGE *storage; |
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UX_HOST_CLASS_STORAGE_MEDIA *storage_media; |
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UX_HOST_CLASS *class_inst; |
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UINT inst_index; |
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#if !defined(UX_HOST_CLASS_STORAGE_NO_FILEX) |
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UX_MEDIA *media; |
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VOID *memory; |
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#endif |
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/* Get the instance for this class. */ |
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storage = (UX_HOST_CLASS_STORAGE *) command -> ux_host_class_command_instance; |
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/* We need the class container. */ |
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class_inst = storage -> ux_host_class_storage_class; |
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/* Point the media structure to the first media in the container. */ |
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storage_media = (UX_HOST_CLASS_STORAGE_MEDIA *) class_inst -> ux_host_class_media; |
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/* The storage device is being shut down. */ |
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storage -> ux_host_class_storage_state = UX_HOST_CLASS_INSTANCE_SHUTDOWN; |
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/* We come to this point when the device has been extracted. So there may have been a transaction |
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being scheduled. We make sure the transaction has been completed by the controller driver. |
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When the device is extracted, the controller tries multiple times the transaction and retires it |
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with a DEVICE_NOT_RESPONDING error code. |
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First we take care of endpoint OUT. */ |
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/* We need to abort transactions on the bulk pipes. */ |
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✓✗ |
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if (storage -> ux_host_class_storage_bulk_out_endpoint != UX_NULL) |
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_ux_host_stack_endpoint_transfer_abort(storage -> ux_host_class_storage_bulk_out_endpoint); |
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/* Then endpoint IN. */ |
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✓✗ |
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if (storage -> ux_host_class_storage_bulk_in_endpoint != UX_NULL) |
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_ux_host_stack_endpoint_transfer_abort(storage -> ux_host_class_storage_bulk_in_endpoint); |
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#ifdef UX_HOST_CLASS_STORAGE_INCLUDE_LEGACY_PROTOCOL_SUPPORT |
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/* Was the protocol CBI ? */ |
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if (storage -> ux_host_class_storage_interface -> ux_interface_descriptor.bInterfaceProtocol == UX_HOST_CLASS_STORAGE_PROTOCOL_CBI) |
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{ |
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/* Was there an interrupt endpoint? */ |
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if (storage -> ux_host_class_storage_interrupt_endpoint != UX_NULL) |
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{ |
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/* Abort the data transfer on the interrupt endpoint. */ |
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_ux_host_stack_endpoint_transfer_abort(storage -> ux_host_class_storage_interrupt_endpoint); |
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/* Free the memory that was used by the interrupt endpoint. */ |
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if (storage -> ux_host_class_storage_interrupt_endpoint -> ux_endpoint_transfer_request.ux_transfer_request_data_pointer != UX_NULL) |
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_ux_utility_memory_free(storage -> ux_host_class_storage_interrupt_endpoint -> ux_endpoint_transfer_request.ux_transfer_request_data_pointer); |
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} |
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} |
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#endif |
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/* The enumeration thread needs to sleep a while to allow the application or the class that may be using |
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endpoints to exit properly. */ |
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_ux_host_thread_schedule_other(UX_THREAD_PRIORITY_ENUM); |
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/* Inform UX_MEDIA (default FileX) of the deactivation of all Media attached to this instance. */ |
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✓✓ |
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for (inst_index = 0; inst_index < UX_HOST_CLASS_STORAGE_MAX_MEDIA; inst_index++) |
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{ |
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#if !defined(UX_HOST_CLASS_STORAGE_NO_FILEX) |
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/* Get the UX_MEDIA (default FileX) attached to this media. */ |
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media = &storage_media -> ux_host_class_storage_media; |
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/* Check if the media belongs to the device being removed. */ |
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✓✓ |
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if (((UX_HOST_CLASS_STORAGE *) ux_media_driver_info_get(media)) == storage) |
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{ |
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/* Check if the media was properly opened. */ |
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✓✓ |
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if (storage_media -> ux_host_class_storage_media_status == UX_HOST_CLASS_STORAGE_MEDIA_MOUNTED) |
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{ |
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/* We preserve the memory used by this media. */ |
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memory = storage_media -> ux_host_class_storage_media_memory; |
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/* Ask UX_MEDIA (default FileX) to unmount the partition. */ |
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ux_media_close(media); |
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/* This device is now unmounted. */ |
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storage_media -> ux_host_class_storage_media_status = UX_HOST_CLASS_STORAGE_MEDIA_UNMOUNTED; |
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/* Reset the media ID. */ |
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ux_media_id_set(media, 0); |
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/* Free the memory block used for data transfer on behalf of UX_MEDIA (default FileX). */ |
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_ux_utility_memory_free(memory); |
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} |
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} |
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#else |
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/* Check if the media is for this storage. */ |
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if (storage_media -> ux_host_class_storage_media_status == UX_USED && |
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storage_media -> ux_host_class_storage_media_storage == storage) |
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{ |
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/* Free the storage media. */ |
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storage_media -> ux_host_class_storage_media_status = UX_UNUSED; |
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/* Invoke callback for media removal. */ |
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if (_ux_system_host -> ux_system_host_change_function != UX_NULL) |
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{ |
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/* Call system change function. */ |
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_ux_system_host -> ux_system_host_change_function(UX_STORAGE_MEDIA_REMOVAL, |
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storage -> ux_host_class_storage_class, (VOID *) storage_media); |
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} |
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} |
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#endif |
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/* Move to next entry in the media array. */ |
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storage_media++; |
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} |
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/* Protect thread reentry to this instance. */ |
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status = _ux_host_semaphore_get(&storage -> ux_host_class_storage_semaphore, UX_WAIT_FOREVER); |
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UX_PARAMETER_NOT_USED(status); |
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/* Destroy the instance. */ |
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_ux_host_stack_class_instance_destroy(storage -> ux_host_class_storage_class, (VOID *) storage); |
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/* Destroy the protection semaphore. */ |
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_ux_host_semaphore_delete(&storage -> ux_host_class_storage_semaphore); |
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/* Before we free the device resources, we need to inform the application |
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that the device is removed. */ |
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✓✓ |
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if (_ux_system_host -> ux_system_host_change_function != UX_NULL) |
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{ |
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/* Inform the application the device is removed. */ |
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_ux_system_host -> ux_system_host_change_function(UX_DEVICE_REMOVAL, storage -> ux_host_class_storage_class, (VOID *) storage); |
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} |
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/* If trace is enabled, insert this event into the trace buffer. */ |
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UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_STORAGE_DEACTIVATE, storage, 0, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) |
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/* If trace is enabled, register this object. */ |
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UX_TRACE_OBJECT_UNREGISTER(storage); |
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/* Free the storage instance memory. */ |
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_ux_utility_memory_free(storage); |
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/* Return successful completion. */ |
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return(UX_SUCCESS); |
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} |
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