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 /** LevelX Component */ 17 /** */ 18 /** NOR Flash */ 19 /** */ 20 /**************************************************************************/ 21 /**************************************************************************/ 22 23 #define LX_SOURCE_CODE 24 25 26 /* Disable ThreadX error checking. */ 27 28 #ifndef LX_DISABLE_ERROR_CHECKING 29 #define LX_DISABLE_ERROR_CHECKING 30 #endif 31 32 33 /* Include necessary system files. */ 34 35 #include "lx_api.h" 36 37 38 /**************************************************************************/ 39 /* */ 40 /* FUNCTION RELEASE */ 41 /* */ 42 /* _lx_nor_flash_partial_defragment PORTABLE C */ 43 /* 6.1.7 */ 44 /* AUTHOR */ 45 /* */ 46 /* William E. Lamie, Microsoft Corporation */ 47 /* */ 48 /* DESCRIPTION */ 49 /* */ 50 /* This function defragments the NOR flash up to the specified */ 51 /* number of blocks. . */ 52 /* */ 53 /* INPUT */ 54 /* */ 55 /* nor_flash NOR flash instance */ 56 /* max_blocks Maximum number of blocks to */ 57 /* defragment */ 58 /* */ 59 /* OUTPUT */ 60 /* */ 61 /* return status */ 62 /* */ 63 /* CALLS */ 64 /* */ 65 /* _lx_nor_flash_block_reclaim Reclaim a NOR flash block */ 66 /* tx_mutex_get Get thread protection */ 67 /* tx_mutex_put Release thread protection */ 68 /* */ 69 /* CALLED BY */ 70 /* */ 71 /* Application Code */ 72 /* Internal LevelX */ 73 /* */ 74 /* RELEASE HISTORY */ 75 /* */ 76 /* DATE NAME DESCRIPTION */ 77 /* */ 78 /* 05-19-2020 William E. Lamie Initial Version 6.0 */ 79 /* 09-30-2020 William E. Lamie Modified comment(s), */ 80 /* resulting in version 6.1 */ 81 /* 06-02-2021 Bhupendra Naphade Modified comment(s), */ 82 /* resulting in version 6.1.7 */ 83 /* */ 84 /**************************************************************************/ _lx_nor_flash_partial_defragment(LX_NOR_FLASH * nor_flash,UINT max_blocks)85UINT _lx_nor_flash_partial_defragment(LX_NOR_FLASH *nor_flash, UINT max_blocks) 86 { 87 88 ULONG i; 89 90 91 #ifdef LX_THREAD_SAFE_ENABLE 92 93 /* Obtain the thread safe mutex. */ 94 tx_mutex_get(&nor_flash -> lx_nor_flash_mutex, TX_WAIT_FOREVER); 95 #endif 96 97 /* Determine if the maximum number of blocks exceeds the total blocks in this flash instance. */ 98 if (max_blocks >= nor_flash -> lx_nor_flash_total_blocks) 99 { 100 101 /* Adjust the maximum to the total number of blocks. */ 102 max_blocks = nor_flash -> lx_nor_flash_total_blocks; 103 } 104 105 /* Loop for max number of blocks, while there are obsolete count. */ 106 for (i = 0; i < max_blocks; i++) 107 { 108 109 /* Determine if there is any more defragment work. */ 110 if (nor_flash -> lx_nor_flash_obsolete_physical_sectors == 0) 111 break; 112 113 /* Call the block reclaim function to defragment. */ 114 _lx_nor_flash_block_reclaim(nor_flash); 115 } 116 117 #ifdef LX_THREAD_SAFE_ENABLE 118 119 /* Release the thread safe mutex. */ 120 tx_mutex_put(&nor_flash -> lx_nor_flash_mutex); 121 #endif 122 123 /* Return successful completion. */ 124 return(LX_SUCCESS); 125 } 126 127 128
