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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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/** LevelX Component */ |
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/** */ |
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/** NAND 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_nand_flash_block_data_move PORTABLE C */ |
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/* 6.2.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* Xiuwen Cai, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function finds a block with less erase count and copies pages */ |
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/* into new block. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* nand_flash NAND flash instance */ |
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/* new_block New block number */ |
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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_nand_flash_mapped_block_list_get Get mapped block index */ |
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/* _lx_nand_flash_block_find Find the mapped block */ |
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/* _lx_nand_flash_data_page_copy Copy data pages */ |
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/* _lx_nand_flash_free_block_list_add Add free block to list */ |
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/* _lx_nand_flash_block_status_set Set block status */ |
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/* _lx_nand_flash_block_mapping_set Set block mapping */ |
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/* _lx_nand_flash_mapped_block_list_add Add mapped block to list */ |
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/* _lx_nand_flash_driver_block_erase Erase block */ |
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/* _lx_nand_flash_erase_count_set Set erase count */ |
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/* _lx_nand_flash_free_block_list_add Add free block to list */ |
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/* _lx_nand_flash_system_error Internal system error handler */ |
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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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/* */ |
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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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/* 03-08-2023 Xiuwen Cai Initial Version 6.2.1 */ |
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/* */ |
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/**************************************************************************/ |
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UINT _lx_nand_flash_block_data_move(LX_NAND_FLASH *nand_flash, ULONG new_block) |
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{ |
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UINT status; |
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ULONG block; |
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USHORT block_status; |
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USHORT new_block_status; |
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ULONG block_mapping_index; |
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/* Get the mapped address to move the data. */ |
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status = _lx_nand_flash_mapped_block_list_get(nand_flash, &block_mapping_index); |
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if (status) |
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{ |
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/* Return an error. */ |
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return(LX_ERROR); |
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} |
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/* Find the block number to be moved. */ |
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status = _lx_nand_flash_block_find(nand_flash, block_mapping_index * nand_flash -> lx_nand_flash_pages_per_block, &block, &block_status); |
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/* Check the status. */ |
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if (status) |
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{ |
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/* Return an error. */ |
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return(LX_ERROR); |
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} |
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/* Set new block status to allocated for now. */ |
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new_block_status = LX_NAND_BLOCK_STATUS_ALLOCATED; |
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/* Copy data from old block to new block. */ |
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status = _lx_nand_flash_data_page_copy(nand_flash, block_mapping_index * nand_flash -> lx_nand_flash_pages_per_block, block, block_status, new_block, &new_block_status, nand_flash -> lx_nand_flash_pages_per_block); |
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/* Check the status. */ |
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if (status) |
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{ |
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/* Call system error handler. */ |
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_lx_nand_flash_system_error(nand_flash, status, new_block, 0); |
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/* Return an error. */ |
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return(LX_ERROR); |
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} |
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/* Check if no page was written. */ |
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if ((new_block_status & LX_NAND_BLOCK_STATUS_PAGE_NUMBER_MASK) == 0) |
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{ |
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/* Mark the new block as free. */ |
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new_block_status = LX_NAND_BLOCK_STATUS_FREE; |
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/* Add the new block to free list. */ |
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_lx_nand_flash_free_block_list_add(nand_flash, new_block); |
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} |
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/* Set the block status for the new block. */ |
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status = _lx_nand_flash_block_status_set(nand_flash, new_block, new_block_status); |
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/* Check for an error from flash driver. */ |
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if (status) |
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{ |
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/* Call system error handler. */ |
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_lx_nand_flash_system_error(nand_flash, status, new_block, 0); |
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/* Return an error. */ |
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return(LX_ERROR); |
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} |
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/* Check if the block is actually mapped. */ |
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if (new_block_status == LX_NAND_BLOCK_STATUS_FREE) |
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{ |
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/* Unmap the block. */ |
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new_block = LX_NAND_BLOCK_UNMAPPED; |
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} |
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/* Update block mapping. */ |
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_lx_nand_flash_block_mapping_set(nand_flash, block_mapping_index * nand_flash -> lx_nand_flash_pages_per_block, new_block); |
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/* Check if the block is actually mapped. */ |
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if (new_block != LX_NAND_BLOCK_UNMAPPED) |
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{ |
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/* Add the block to mapped list. */ |
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_lx_nand_flash_mapped_block_list_add(nand_flash, block_mapping_index); |
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} |
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/* Erase the old block. */ |
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status = _lx_nand_flash_driver_block_erase(nand_flash, block, nand_flash -> lx_nand_flash_base_erase_count + nand_flash -> lx_nand_flash_erase_count_table[block] + 1); |
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/* Check for an error from flash driver. */ |
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if (status) |
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{ |
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/* Call system error handler. */ |
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_lx_nand_flash_system_error(nand_flash, status, block, 0); |
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/* Return an error. */ |
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return(LX_ERROR); |
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} |
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/* Update the erase count for the erased block. */ |
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status = _lx_nand_flash_erase_count_set(nand_flash, block, (UCHAR)(nand_flash -> lx_nand_flash_erase_count_table[block] + 1)); |
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/* Check for an error from flash driver. */ |
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if (status) |
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{ |
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/* Call system error handler. */ |
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_lx_nand_flash_system_error(nand_flash, status, block, 0); |
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/* Return an error. */ |
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return(LX_ERROR); |
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} |
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/* Set the block status to free. */ |
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status = _lx_nand_flash_block_status_set(nand_flash, block, LX_NAND_BLOCK_STATUS_FREE); |
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/* Check for an error from flash driver. */ |
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if (status) |
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{ |
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/* Call system error handler. */ |
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_lx_nand_flash_system_error(nand_flash, status, block, 0); |
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/* Return an error. */ |
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return(LX_ERROR); |
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} |
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/* Add the block to free block list. */ |
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status = _lx_nand_flash_free_block_list_add(nand_flash, block); |
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/* Return status. */ |
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return(status); |
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} |
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