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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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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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/** Device Stack */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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#define UX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "ux_api.h" |
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#include "ux_device_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_device_stack_uninitialize PORTABLE C */ |
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/* 6.3.0 */ |
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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 uninitializes the generic portion of the device side */ |
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/* of USBX. */ |
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/* */ |
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/* INPUT */ |
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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_utility_memory_free Free */ |
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/* _ux_utility_semaphore_delete Delete semaphore */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */ |
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/* 09-30-2020 Chaoqiong Xiao Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* 04-02-2021 Chaoqiong Xiao Modified comment(s), */ |
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/* fixed uninitialize in case */ |
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/* there is no EP except EP0, */ |
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/* resulting in version 6.1.6 */ |
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/* 01-31-2022 Chaoqiong Xiao Modified comment(s), */ |
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/* added standalone support, */ |
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/* resulting in version 6.1.10 */ |
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/* 10-31-2023 Chaoqiong Xiao Modified comment(s), */ |
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/* added a new mode to manage */ |
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/* endpoint buffer in classes, */ |
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/* resulting in version 6.3.0 */ |
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/* */ |
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/**************************************************************************/ |
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UINT _ux_device_stack_uninitialize(VOID) |
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{ |
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UX_SLAVE_DEVICE *device; |
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UX_SLAVE_ENDPOINT *endpoints_pool; |
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UX_SLAVE_TRANSFER *transfer_request; |
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ULONG endpoints_found; |
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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_DEVICE_STACK_INITIALIZE, 0, 0, 0, 0, UX_TRACE_DEVICE_STACK_EVENTS, 0, 0) |
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/* Get the pointer to the device. */ |
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device = &_ux_system_slave -> ux_system_slave_device; |
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/* Free class memory. */ |
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_ux_utility_memory_free(_ux_system_slave -> ux_system_slave_class_array); |
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/* Allocate some memory for the Control Endpoint. First get the address of the transfer request for the |
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control endpoint. */ |
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transfer_request = &device -> ux_slave_device_control_endpoint.ux_slave_endpoint_transfer_request; |
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/* Free memory for the control endpoint buffer. */ |
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_ux_utility_memory_free(transfer_request -> ux_slave_transfer_request_data_pointer); |
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/* Get the number of endpoints found in the device framework. */ |
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endpoints_found = device -> ux_slave_device_endpoints_pool_number; |
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/* Get the endpoint pool address in the device container. */ |
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endpoints_pool = device -> ux_slave_device_endpoints_pool; |
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/* Parse all endpoints and fee memory and semaphore. */ |
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✓✓ |
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while (endpoints_found-- != 0) |
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{ |
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#if UX_DEVICE_ENDPOINT_BUFFER_OWNER == 0 |
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/* Free the memory for endpoint data pointer. */ |
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_ux_utility_memory_free(endpoints_pool -> ux_slave_endpoint_transfer_request.ux_slave_transfer_request_data_pointer); |
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#endif |
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/* Remove the TX semaphore for the endpoint. */ |
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_ux_device_semaphore_delete(&endpoints_pool -> ux_slave_endpoint_transfer_request.ux_slave_transfer_request_semaphore); |
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/* Next endpoint. */ |
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endpoints_pool++; |
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} |
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/* Free the endpoint pool address in the device container. */ |
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✓✓ |
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if (device -> ux_slave_device_endpoints_pool) |
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_ux_utility_memory_free(device -> ux_slave_device_endpoints_pool); |
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/* Free memory for interface pool. */ |
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_ux_utility_memory_free(device -> ux_slave_device_interfaces_pool); |
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/* Return successful completion. */ |
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return(UX_SUCCESS); |
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} |
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