1 /**************************************************************************/ 2 /* */ 3 /* Copyright (c) Microsoft Corporation. All rights reserved. */ 4 /* */ 5 /* This software is licensed under the Microsoft Software License */ 6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */ 7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ 8 /* and in the root directory of this software. */ 9 /* */ 10 /**************************************************************************/ 11 12 13 /**************************************************************************/ 14 /**************************************************************************/ 15 /** */ 16 /** USBX Component */ 17 /** */ 18 /** Storage Class */ 19 /** */ 20 /**************************************************************************/ 21 /**************************************************************************/ 22 23 24 /* Include necessary system files. */ 25 26 #define UX_SOURCE_CODE 27 28 #include "ux_api.h" 29 #include "ux_host_class_storage.h" 30 #include "ux_host_stack.h" 31 32 33 #if defined(UX_HOST_CLASS_STORAGE_NO_FILEX) 34 /**************************************************************************/ 35 /* */ 36 /* FUNCTION RELEASE */ 37 /* */ 38 /* _ux_host_class_storage_media_lock PORTABLE C */ 39 /* 6.1.10 */ 40 /* AUTHOR */ 41 /* */ 42 /* Chaoqiong Xiao, Microsoft Corporation */ 43 /* */ 44 /* DESCRIPTION */ 45 /* */ 46 /* This function lock storage and select storage media for read/write. */ 47 /* */ 48 /* INPUT */ 49 /* */ 50 /* storage_media Pointer to storage media to */ 51 /* select */ 52 /* wait Wait option */ 53 /* */ 54 /* OUTPUT */ 55 /* */ 56 /* Completion Status */ 57 /* */ 58 /* CALLS */ 59 /* */ 60 /* */ 61 /* CALLED BY */ 62 /* */ 63 /* Storage Class */ 64 /* */ 65 /* RELEASE HISTORY */ 66 /* */ 67 /* DATE NAME DESCRIPTION */ 68 /* */ 69 /* 09-30-2020 Chaoqiong Xiao Initial Version 6.1 */ 70 /* 01-31-2022 Chaoqiong Xiao Modified comment(s), */ 71 /* added standalone support, */ 72 /* resulting in version 6.1.10 */ 73 /* */ 74 /**************************************************************************/ _ux_host_class_storage_media_lock(UX_HOST_CLASS_STORAGE_MEDIA * storage_media,ULONG wait)75UINT _ux_host_class_storage_media_lock(UX_HOST_CLASS_STORAGE_MEDIA *storage_media, ULONG wait) 76 { 77 #if !defined(UX_HOST_CLASS_STORAGE_NO_FILEX) 78 UX_PARAMETER_NOT_USED(storage_media); 79 UX_PARAMETER_NOT_USED(wait); 80 return(UX_FUNCTION_NOT_SUPPORTED); 81 #else 82 83 UX_HOST_CLASS_STORAGE *storage; 84 UINT status; 85 86 87 /* Get storage instance. */ 88 storage = storage_media -> ux_host_class_storage_media_storage; 89 if (storage == UX_NULL) 90 return(UX_ERROR); 91 92 /* Protect thread reentry to this instance. */ 93 status = _ux_host_class_storage_lock(storage, wait); 94 if (status != UX_SUCCESS) 95 return(status); 96 97 /* Select the media if success. */ 98 storage -> ux_host_class_storage_lun = storage_media -> ux_host_class_storage_media_lun; 99 storage -> ux_host_class_storage_sector_size = storage_media -> ux_host_class_storage_media_sector_size; 100 storage -> ux_host_class_storage_last_sector_number = storage_media -> ux_host_class_storage_media_number_sectors - 1; 101 102 /* Return success. */ 103 return(UX_SUCCESS); 104 #endif 105 } 106 #endif 107
