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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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/** LevelX Component */ |
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/** */ |
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/** NOR Flash */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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#define LX_SOURCE_CODE |
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/* Disable ThreadX error checking. */ |
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#ifndef LX_DISABLE_ERROR_CHECKING |
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#define LX_DISABLE_ERROR_CHECKING |
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#endif |
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/* Include necessary system files. */ |
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#include "lx_api.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _lx_nor_flash_partial_defragment PORTABLE C */ |
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/* 6.1.7 */ |
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/* AUTHOR */ |
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/* */ |
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/* William E. Lamie, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function defragments the NOR flash up to the specified */ |
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/* number of blocks. . */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* nor_flash NOR flash instance */ |
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/* max_blocks Maximum number of blocks to */ |
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/* defragment */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* return status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _lx_nor_flash_block_reclaim Reclaim a NOR flash block */ |
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/* tx_mutex_get Get thread protection */ |
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/* tx_mutex_put Release thread protection */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application Code */ |
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/* Internal LevelX */ |
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/* */ |
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/**************************************************************************/ |
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UINT _lx_nor_flash_partial_defragment(LX_NOR_FLASH *nor_flash, UINT max_blocks) |
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{ |
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ULONG i; |
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#ifdef LX_THREAD_SAFE_ENABLE |
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/* Obtain the thread safe mutex. */ |
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tx_mutex_get(&nor_flash -> lx_nor_flash_mutex, TX_WAIT_FOREVER); |
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#endif |
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/* Determine if the maximum number of blocks exceeds the total blocks in this flash instance. */ |
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if (max_blocks >= nor_flash -> lx_nor_flash_total_blocks) |
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{ |
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/* Adjust the maximum to the total number of blocks. */ |
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max_blocks = nor_flash -> lx_nor_flash_total_blocks; |
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} |
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/* Loop for max number of blocks, while there are obsolete count. */ |
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for (i = 0; i < max_blocks; i++) |
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{ |
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/* Determine if there is any more defragment work. */ |
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if (nor_flash -> lx_nor_flash_obsolete_physical_sectors == 0) |
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break; |
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/* Call the block reclaim function to defragment. */ |
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_lx_nor_flash_block_reclaim(nor_flash); |
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} |
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#ifdef LX_THREAD_SAFE_ENABLE |
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/* Release the thread safe mutex. */ |
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tx_mutex_put(&nor_flash -> lx_nor_flash_mutex); |
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#endif |
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/* Return successful completion. */ |
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return(LX_SUCCESS); |
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} |
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