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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_find 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 attempts to find the mapped block for the logical */ |
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/* sector in the mapping table. */ |
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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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/* logical_sector Logical sector number */ |
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/* superceded_check Check for page being */ |
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/* superceded (can happen if */ |
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/* on interruptions of page */ |
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/* write) */ |
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/* block Destination for block */ |
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/* page Destination for page */ |
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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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/* None */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Internal LevelX */ |
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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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86624 |
UINT _lx_nand_flash_block_find(LX_NAND_FLASH *nand_flash, ULONG logical_sector, ULONG *block, USHORT *block_status) |
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{ |
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UINT block_mapping_index; |
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USHORT block_number; |
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/* Get the mapping index from logic sector address. */ |
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86624 |
block_mapping_index = logical_sector / nand_flash -> lx_nand_flash_pages_per_block; |
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/* Check the address range. */ |
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✗✓ |
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if (block_mapping_index > nand_flash -> lx_nand_flash_block_mapping_table_size / sizeof(*nand_flash -> lx_nand_flash_block_mapping_table)) |
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{ |
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/* Out of range, return an error. */ |
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return(LX_ERROR); |
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} |
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/* Get the block number from mapping table. */ |
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86624 |
block_number = nand_flash -> lx_nand_flash_block_mapping_table[block_mapping_index]; |
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/* Check if it is mapped. */ |
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✓✓ |
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if (block_number != LX_NAND_BLOCK_UNMAPPED) |
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{ |
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/* Return the block status. */ |
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37812 |
*block_status = nand_flash -> lx_nand_flash_block_status_table[block_number]; |
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} |
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/* Return the block number. */ |
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*block = (ULONG)block_number; |
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/* Return successful completion. */ |
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return(LX_SUCCESS); |
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} |
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