lx_nand_flash_free_block_list_add.c
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|---|---|---|---|
| 1 | /*************************************************************************** | ||
| 2 | * Copyright (c) 2024 Microsoft Corporation | ||
| 3 | * Copyright (c) 2026-present Eclipse ThreadX contributors | ||
| 4 | * | ||
| 5 | * This program and the accompanying materials are made available under the | ||
| 6 | * terms of the MIT License which is available at | ||
| 7 | * https://opensource.org/licenses/MIT. | ||
| 8 | * | ||
| 9 | * SPDX-License-Identifier: MIT | ||
| 10 | **************************************************************************/ | ||
| 11 | |||
| 12 | |||
| 13 | /**************************************************************************/ | ||
| 14 | /**************************************************************************/ | ||
| 15 | /** */ | ||
| 16 | /** LevelX Component */ | ||
| 17 | /** */ | ||
| 18 | /** NAND 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_nand_flash_free_block_list_add PORTABLE C */ | ||
| 43 | /* 6.2.1 */ | ||
| 44 | /* AUTHOR */ | ||
| 45 | /* */ | ||
| 46 | /* Xiuwen Cai, Microsoft Corporation */ | ||
| 47 | /* */ | ||
| 48 | /* DESCRIPTION */ | ||
| 49 | /* */ | ||
| 50 | /* This function adds a block to free block list. */ | ||
| 51 | /* */ | ||
| 52 | /* INPUT */ | ||
| 53 | /* */ | ||
| 54 | /* nand_flash NAND flash instance */ | ||
| 55 | /* block Block number */ | ||
| 56 | /* */ | ||
| 57 | /* OUTPUT */ | ||
| 58 | /* */ | ||
| 59 | /* return status */ | ||
| 60 | /* */ | ||
| 61 | /* CALLS */ | ||
| 62 | /* */ | ||
| 63 | /* None */ | ||
| 64 | /* */ | ||
| 65 | /* CALLED BY */ | ||
| 66 | /* */ | ||
| 67 | /* Internal LevelX */ | ||
| 68 | /* */ | ||
| 69 | /**************************************************************************/ | ||
| 70 | 65110 | UINT _lx_nand_flash_free_block_list_add(LX_NAND_FLASH* nand_flash, ULONG block) | |
| 71 | { | ||
| 72 | |||
| 73 | ULONG insert_position; | ||
| 74 | INT search_position; | ||
| 75 | UCHAR new_block_erase_count; | ||
| 76 | |||
| 77 | |||
| 78 | /* Get insert position for the free block list. */ | ||
| 79 | 65110 | insert_position = nand_flash -> lx_nand_flash_free_block_list_tail; | |
| 80 | |||
| 81 | /* Check if the list if full. */ | ||
| 82 |
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65110 | if (insert_position > nand_flash -> lx_nand_flash_mapped_block_list_head) |
| 83 | { | ||
| 84 | |||
| 85 | /* Return an error. */ | ||
| 86 | ✗ | return(LX_ERROR); | |
| 87 | } | ||
| 88 | |||
| 89 | /* Get the erase count. */ | ||
| 90 | 65110 | new_block_erase_count = nand_flash -> lx_nand_flash_erase_count_table[block]; | |
| 91 | |||
| 92 | /* Add one block to the free list. */ | ||
| 93 | 65110 | nand_flash -> lx_nand_flash_free_block_list_tail++; | |
| 94 | |||
| 95 | /* Initialize the search pointer. */ | ||
| 96 | 65110 | search_position = (INT)insert_position - 1; | |
| 97 | |||
| 98 | /* Loop to search the insert position by block erase count. */ | ||
| 99 |
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7642420 | while ((search_position >= 0) && |
| 100 |
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7642330 | (nand_flash -> lx_nand_flash_erase_count_table[nand_flash -> lx_nand_flash_block_list[search_position]] < new_block_erase_count)) |
| 101 | { | ||
| 102 | |||
| 103 | /* Move the item in the list. */ | ||
| 104 | 7577310 | nand_flash -> lx_nand_flash_block_list[insert_position] = nand_flash -> lx_nand_flash_block_list[search_position]; | |
| 105 | 7577310 | search_position--; | |
| 106 | 7577310 | insert_position--; | |
| 107 | } | ||
| 108 | |||
| 109 | /* Insert the new block to the list. */ | ||
| 110 | 65110 | nand_flash -> lx_nand_flash_block_list[insert_position] = (USHORT)block; | |
| 111 | |||
| 112 | /* Return successful completion. */ | ||
| 113 | 65110 | return(LX_SUCCESS); | |
| 114 | } | ||
| 115 | |||
| 116 |