1 /*************************************************************************** 2 * Copyright (c) 2024 Microsoft Corporation 3 * 4 * This program and the accompanying materials are made available under the 5 * terms of the MIT License which is available at 6 * https://opensource.org/licenses/MIT. 7 * 8 * SPDX-License-Identifier: MIT 9 **************************************************************************/ 10 11 12 /**************************************************************************/ 13 /**************************************************************************/ 14 /** */ 15 /** USBX Component */ 16 /** */ 17 /** Device Storage Class */ 18 /** */ 19 /**************************************************************************/ 20 /**************************************************************************/ 21 22 #define UX_SOURCE_CODE 23 24 25 /* Include necessary system files. */ 26 27 #include "ux_api.h" 28 #include "ux_device_class_storage.h" 29 #include "ux_device_stack.h" 30 31 32 /**************************************************************************/ 33 /* */ 34 /* FUNCTION RELEASE */ 35 /* */ 36 /* _ux_device_class_storage_uninitialize PORTABLE C */ 37 /* 6.3.0 */ 38 /* AUTHOR */ 39 /* */ 40 /* Chaoqiong Xiao, Microsoft Corporation */ 41 /* */ 42 /* DESCRIPTION */ 43 /* */ 44 /* This function deinitializes the USB storage device. */ 45 /* */ 46 /* INPUT */ 47 /* */ 48 /* command Pointer to storage command */ 49 /* */ 50 /* OUTPUT */ 51 /* */ 52 /* Completion Status */ 53 /* */ 54 /* CALLS */ 55 /* */ 56 /* _ux_utility_memory_free Free memory */ 57 /* _ux_device_thread_delete Delete thread */ 58 /* */ 59 /* CALLED BY */ 60 /* */ 61 /* Device Storage Class */ 62 /* */ 63 /* RELEASE HISTORY */ 64 /* */ 65 /* DATE NAME DESCRIPTION */ 66 /* */ 67 /* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */ 68 /* 09-30-2020 Chaoqiong Xiao Modified comment(s), */ 69 /* resulting in version 6.1 */ 70 /* 01-31-2022 Chaoqiong Xiao Modified comment(s), */ 71 /* added standalone support, */ 72 /* resulting in version 6.1.10 */ 73 /* 07-29-2022 Chaoqiong Xiao Modified comment(s), */ 74 /* fixed parameter/variable */ 75 /* names conflict C++ keyword, */ 76 /* resulting in version 6.1.12 */ 77 /* 10-31-2023 Chaoqiong Xiao Modified comment(s), */ 78 /* added a new mode to manage */ 79 /* endpoint buffer in classes, */ 80 /* resulting in version 6.3.0 */ 81 /* */ 82 /**************************************************************************/ _ux_device_class_storage_uninitialize(UX_SLAVE_CLASS_COMMAND * command)83UINT _ux_device_class_storage_uninitialize(UX_SLAVE_CLASS_COMMAND *command) 84 { 85 86 UX_SLAVE_CLASS_STORAGE *storage; 87 UX_SLAVE_CLASS *class_ptr; 88 89 /* Get the class container. */ 90 class_ptr = command -> ux_slave_class_command_class_ptr; 91 92 /* Get the class instance in the container. */ 93 storage = (UX_SLAVE_CLASS_STORAGE *) class_ptr -> ux_slave_class_instance; 94 95 /* Sanity check. */ 96 if (storage != UX_NULL) 97 { 98 99 /* Remove STORAGE thread. */ 100 _ux_device_thread_delete(&class_ptr -> ux_slave_class_thread); 101 102 #if !(defined(UX_DEVICE_STANDALONE) || defined(UX_STANDALONE)) 103 /* Remove the thread used by STORAGE. */ 104 _ux_utility_memory_free(class_ptr -> ux_slave_class_thread_stack); 105 #endif 106 107 #if UX_DEVICE_ENDPOINT_BUFFER_OWNER == 1 108 _ux_utility_memory_free(storage -> ux_device_class_storage_endpoint_buffer); 109 #endif 110 111 /* Free the resources. */ 112 _ux_utility_memory_free(storage); 113 } 114 115 /* Return completion status. */ 116 return(UX_SUCCESS); 117 } 118 119
