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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 423 | giacomo | 1 | /* |
| 2 | * inftl.h -- defines to support the Inverse NAND Flash Translation Layer |
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| 3 | * |
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| 4 | * (C) Copyright 2002, Greg Ungerer (gerg@snapgear.com) |
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| 5 | * |
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| 6 | * $Id: inftl.h,v 1.1 2004-01-28 15:30:49 giacomo Exp $ |
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| 7 | */ |
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| 8 | |||
| 9 | #ifndef __MTD_INFTL_H__ |
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| 10 | #define __MTD_INFTL_H__ |
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| 11 | |||
| 12 | #include <linux/mtd/blktrans.h> |
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| 13 | #include <linux/mtd/mtd.h> |
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| 14 | #include <linux/mtd/nftl.h> |
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| 15 | |||
| 16 | #define OSAK_VERSION 0x5120 |
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| 17 | #define PERCENTUSED 98 |
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| 18 | |||
| 19 | #define SECTORSIZE 512 |
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| 20 | |||
| 21 | #ifndef INFTL_MAJOR |
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| 22 | #define INFTL_MAJOR 93 /* FIXME */ |
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| 23 | #endif |
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| 24 | #define INFTL_PARTN_BITS 4 |
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| 25 | |||
| 26 | /* Block Control Information */ |
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| 27 | |||
| 28 | struct inftl_bci { |
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| 29 | __u8 ECCsig[6]; |
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| 30 | __u8 Status; |
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| 31 | __u8 Status1; |
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| 32 | } __attribute__((packed)); |
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| 33 | |||
| 34 | struct inftl_unithead1 { |
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| 35 | __u16 virtualUnitNo; |
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| 36 | __u16 prevUnitNo; |
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| 37 | __u8 ANAC; |
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| 38 | __u8 NACs; |
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| 39 | __u8 parityPerField; |
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| 40 | __u8 discarded; |
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| 41 | } __attribute__((packed)); |
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| 42 | |||
| 43 | struct inftl_unithead2 { |
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| 44 | __u8 parityPerField; |
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| 45 | __u8 ANAC; |
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| 46 | __u16 prevUnitNo; |
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| 47 | __u16 virtualUnitNo; |
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| 48 | __u8 NACs; |
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| 49 | __u8 discarded; |
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| 50 | } __attribute__((packed)); |
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| 51 | |||
| 52 | struct inftl_unittail { |
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| 53 | __u8 Reserved[4]; |
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| 54 | __u16 EraseMark; |
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| 55 | __u16 EraseMark1; |
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| 56 | } __attribute__((packed)); |
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| 57 | |||
| 58 | union inftl_uci { |
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| 59 | struct inftl_unithead1 a; |
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| 60 | struct inftl_unithead2 b; |
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| 61 | struct inftl_unittail c; |
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| 62 | }; |
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| 63 | |||
| 64 | struct inftl_oob { |
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| 65 | struct inftl_bci b; |
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| 66 | union inftl_uci u; |
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| 67 | }; |
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| 68 | |||
| 69 | |||
| 70 | /* INFTL Media Header */ |
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| 71 | |||
| 72 | struct INFTLPartition { |
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| 73 | __u32 virtualUnits; |
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| 74 | __u32 firstUnit; |
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| 75 | __u32 lastUnit; |
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| 76 | __u32 flags; |
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| 77 | __u32 spareUnits; |
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| 78 | __u32 Reserved0; |
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| 79 | __u32 Reserved1; |
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| 80 | } __attribute__((packed)); |
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| 81 | |||
| 82 | struct INFTLMediaHeader { |
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| 83 | char bootRecordID[8]; |
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| 84 | __u32 NoOfBootImageBlocks; |
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| 85 | __u32 NoOfBinaryPartitions; |
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| 86 | __u32 NoOfBDTLPartitions; |
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| 87 | __u32 BlockMultiplierBits; |
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| 88 | __u32 FormatFlags; |
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| 89 | __u32 OsakVersion; |
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| 90 | __u32 PercentUsed; |
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| 91 | struct INFTLPartition Partitions[4]; |
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| 92 | } __attribute__((packed)); |
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| 93 | |||
| 94 | /* Partition flag types */ |
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| 95 | #define INFTL_BINARY 0x20000000 |
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| 96 | #define INFTL_BDTL 0x40000000 |
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| 97 | #define INFTL_LAST 0x80000000 |
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| 98 | |||
| 99 | |||
| 100 | #ifdef __KERNEL__ |
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| 101 | |||
| 102 | struct INFTLrecord { |
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| 103 | struct mtd_blktrans_dev mbd; |
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| 104 | __u16 MediaUnit, SpareMediaUnit; |
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| 105 | __u32 EraseSize; |
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| 106 | struct INFTLMediaHeader MediaHdr; |
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| 107 | int usecount; |
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| 108 | unsigned char heads; |
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| 109 | unsigned char sectors; |
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| 110 | unsigned short cylinders; |
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| 111 | __u16 numvunits; |
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| 112 | __u16 firstEUN; |
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| 113 | __u16 lastEUN; |
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| 114 | __u16 numfreeEUNs; |
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| 115 | __u16 LastFreeEUN; /* To speed up finding a free EUN */ |
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| 116 | int head,sect,cyl; |
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| 117 | __u16 *PUtable; /* Physical Unit Table */ |
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| 118 | __u16 *VUtable; /* Virtual Unit Table */ |
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| 119 | unsigned int nb_blocks; /* number of physical blocks */ |
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| 120 | unsigned int nb_boot_blocks; /* number of blocks used by the bios */ |
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| 121 | struct erase_info instr; |
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| 122 | }; |
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| 123 | |||
| 124 | int INFTL_mount(struct INFTLrecord *s); |
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| 125 | int INFTL_formatblock(struct INFTLrecord *s, int block); |
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| 126 | |||
| 127 | #endif /* __KERNEL__ */ |
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| 128 | |||
| 129 | #endif /* __MTD_INFTL_H__ */ |