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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 423 | giacomo | 1 | /* |
| 2 | * $Id: nftl.h,v 1.1 2004-01-28 15:30:50 giacomo Exp $ |
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| 3 | * |
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| 4 | * (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> |
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| 5 | */ |
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| 6 | |||
| 7 | #ifndef __MTD_NFTL_H__ |
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| 8 | #define __MTD_NFTL_H__ |
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| 9 | |||
| 10 | #include <linux/mtd/mtd.h> |
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| 11 | #include <linux/mtd/blktrans.h> |
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| 12 | |||
| 13 | /* Block Control Information */ |
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| 14 | |||
| 15 | struct nftl_bci { |
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| 16 | unsigned char ECCSig[6]; |
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| 17 | __u8 Status; |
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| 18 | __u8 Status1; |
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| 19 | }__attribute__((packed)); |
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| 20 | |||
| 21 | /* Unit Control Information */ |
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| 22 | |||
| 23 | struct nftl_uci0 { |
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| 24 | __u16 VirtUnitNum; |
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| 25 | __u16 ReplUnitNum; |
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| 26 | __u16 SpareVirtUnitNum; |
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| 27 | __u16 SpareReplUnitNum; |
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| 28 | } __attribute__((packed)); |
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| 29 | |||
| 30 | struct nftl_uci1 { |
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| 31 | __u32 WearInfo; |
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| 32 | __u16 EraseMark; |
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| 33 | __u16 EraseMark1; |
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| 34 | } __attribute__((packed)); |
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| 35 | |||
| 36 | struct nftl_uci2 { |
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| 37 | __u16 FoldMark; |
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| 38 | __u16 FoldMark1; |
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| 39 | __u32 unused; |
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| 40 | } __attribute__((packed)); |
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| 41 | |||
| 42 | union nftl_uci { |
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| 43 | struct nftl_uci0 a; |
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| 44 | struct nftl_uci1 b; |
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| 45 | struct nftl_uci2 c; |
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| 46 | }; |
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| 47 | |||
| 48 | struct nftl_oob { |
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| 49 | struct nftl_bci b; |
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| 50 | union nftl_uci u; |
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| 51 | }; |
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| 52 | |||
| 53 | /* NFTL Media Header */ |
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| 54 | |||
| 55 | struct NFTLMediaHeader { |
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| 56 | char DataOrgID[6]; |
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| 57 | __u16 NumEraseUnits; |
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| 58 | __u16 FirstPhysicalEUN; |
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| 59 | __u32 FormattedSize; |
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| 60 | unsigned char UnitSizeFactor; |
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| 61 | } __attribute__((packed)); |
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| 62 | |||
| 63 | #define MAX_ERASE_ZONES (8192 - 512) |
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| 64 | |||
| 65 | #define ERASE_MARK 0x3c69 |
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| 66 | #define SECTOR_FREE 0xff |
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| 67 | #define SECTOR_USED 0x55 |
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| 68 | #define SECTOR_IGNORE 0x11 |
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| 69 | #define SECTOR_DELETED 0x00 |
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| 70 | |||
| 71 | #define FOLD_MARK_IN_PROGRESS 0x5555 |
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| 72 | |||
| 73 | #define ZONE_GOOD 0xff |
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| 74 | #define ZONE_BAD_ORIGINAL 0 |
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| 75 | #define ZONE_BAD_MARKED 7 |
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| 76 | |||
| 77 | #ifdef __KERNEL__ |
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| 78 | |||
| 79 | /* these info are used in ReplUnitTable */ |
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| 80 | #define BLOCK_NIL 0xffff /* last block of a chain */ |
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| 81 | #define BLOCK_FREE 0xfffe /* free block */ |
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| 82 | #define BLOCK_NOTEXPLORED 0xfffd /* non explored block, only used during mounting */ |
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| 83 | #define BLOCK_RESERVED 0xfffc /* bios block or bad block */ |
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| 84 | |||
| 85 | struct NFTLrecord { |
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| 86 | struct mtd_blktrans_dev mbd; |
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| 87 | __u16 MediaUnit, SpareMediaUnit; |
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| 88 | __u32 EraseSize; |
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| 89 | struct NFTLMediaHeader MediaHdr; |
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| 90 | int usecount; |
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| 91 | unsigned char heads; |
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| 92 | unsigned char sectors; |
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| 93 | unsigned short cylinders; |
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| 94 | __u16 numvunits; |
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| 95 | __u16 lastEUN; /* should be suppressed */ |
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| 96 | __u16 numfreeEUNs; |
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| 97 | __u16 LastFreeEUN; /* To speed up finding a free EUN */ |
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| 98 | int head,sect,cyl; |
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| 99 | __u16 *EUNtable; /* [numvunits]: First EUN for each virtual unit */ |
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| 100 | __u16 *ReplUnitTable; /* [numEUNs]: ReplUnitNumber for each */ |
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| 101 | unsigned int nb_blocks; /* number of physical blocks */ |
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| 102 | unsigned int nb_boot_blocks; /* number of blocks used by the bios */ |
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| 103 | struct erase_info instr; |
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| 104 | }; |
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| 105 | |||
| 106 | int NFTL_mount(struct NFTLrecord *s); |
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| 107 | int NFTL_formatblock(struct NFTLrecord *s, int block); |
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| 108 | |||
| 109 | #ifndef NFTL_MAJOR |
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| 110 | #define NFTL_MAJOR 93 |
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| 111 | #endif |
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| 112 | |||
| 113 | #define MAX_NFTLS 16 |
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| 114 | #define MAX_SECTORS_PER_UNIT 64 |
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| 115 | #define NFTL_PARTN_BITS 4 |
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| 116 | |||
| 117 | #endif /* __KERNEL__ */ |
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| 118 | |||
| 119 | #endif /* __MTD_NFTL_H__ */ |