| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Linux driver for NAND NV Flash Translation Layer |
| 3 | * Copyright (C) 2016, ZIXC Corporation. |
| 4 | */ |
| 5 | |
| 6 | |
| 7 | #ifndef __MTD_NV_FTL_H__ |
| 8 | #define __MTD_NV_FTL_H__ |
| 9 | |
| 10 | #include <linux/mtd/mtd.h> |
| 11 | #include <linux/mtd/zftl_ecc.h> |
| 12 | |
| 13 | |
| 14 | |
| 15 | /* error define */ |
| 16 | #define CAN_NOT_FIND_FREE_BLOCK 5 /* ÕÒ²»µ½¿ÕÏп飬½¨ÒéÔö¼ÓZFTL·ÖÇøµÄ´óС */ |
| 17 | #define NAND_READ_WRITE_ERROR 6 |
| 18 | |
| 19 | /* |
| 20 | * zftl partition |
| 21 | */ |
| 22 | |
| 23 | |
| 24 | /* these info are used in blockRepTable */ |
| 25 | #define BLOCK_NIL 0xFFFF /* ´Ë¿éûÓÐÓ³Éä¹Øϵ */ |
| 26 | |
| 27 | |
| 28 | /* these info are used in BlockTable */ |
| 29 | #define BLOCK_FREE 0x00 |
| 30 | #define BLOCK_USED 0x55 |
| 31 | #define BLOCK_BAD 0xAA |
| 32 | #define BLOCK_DIRTY 0x11 |
| 33 | |
| 34 | |
| 35 | struct ZFTLrecord { |
| 36 | nand_info_t *nand; |
| 37 | unsigned char *blockbuf; /* ¿é»º´æ */ |
| 38 | unsigned char *oobbuf; /* OOB»º´æ */ |
| 39 | unsigned char *blockTable; |
| 40 | unsigned short *blockRepTable; |
| 41 | unsigned short *versionTable; /* Ö»ÓÃÔÚ¿ª»ú¹ÒÔصÄʱºò */ |
| 42 | uint32_t erasesize; |
| 43 | uint32_t writesize; |
| 44 | unsigned int erasesize_shift; |
| 45 | unsigned int writesize_shift; |
| 46 | uint32_t oobsize; |
| 47 | uint32_t firstBlock; /* µÚÒ»¿éµÄ¿éºÅ */ |
| 48 | uint32_t numBlocks; /* ×ܵĿéÊý */ |
| 49 | uint32_t lastFreeBlock; |
| 50 | }; |
| 51 | |
| 52 | struct zftl_oob { |
| 53 | __u8 head[CONFIG_ZFLT_HEAD_BYTE]; /* zftlÍ· */ |
| 54 | __u8 used; |
| 55 | __u8 version; |
| 56 | __u16 logicBlockID; /* ·ÖÇøÄÚµÄÆ«ÒÆ¿éºÅ */ |
| 57 | }__attribute__((packed)); |
| 58 | |
| 59 | |
| 60 | |
| 61 | |
| 62 | struct zftl_packed_tags { |
| 63 | struct zftl_oob t; |
| 64 | struct zftl_ecc_other ecc; |
| 65 | }; |
| 66 | |
| 67 | |
| 68 | void * zftl_get_ZFTLrecord(uint32_t offset); |
| 69 | int zftl_write(struct ZFTLrecord *zftl, uint32_t to, uint32_t len, u_char *buf); |
| 70 | int zftl_read(struct ZFTLrecord *zftl, uint32_t from, uint32_t len, u_char *buffer); |
| 71 | |
| 72 | #endif /* __MTD_NFTL_H__ */ |