diff options
author | wdenk <wdenk> | 2002-01-26 00:07:42 +0000 |
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committer | wdenk <wdenk> | 2002-01-26 00:07:42 +0000 |
commit | a1e329b41b473ab0b95ccad26147d404b1ac25b0 (patch) | |
tree | dd8da607d0b64deaa09b16d935be78ca7eee086b /include/linux | |
parent | 2496efde2453c0fc51c962dfe60dd740ba4268bf (diff) |
Initial revision
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/mtd/nftl.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/include/linux/mtd/nftl.h b/include/linux/mtd/nftl.h new file mode 100644 index 00000000000..5023a9fb1f0 --- /dev/null +++ b/include/linux/mtd/nftl.h @@ -0,0 +1,105 @@ + +/* Defines for NAND Flash Translation Layer */ +/* (c) 1999 Machine Vision Holdings, Inc. */ +/* Author: David Woodhouse <dwmw2@mvhi.com> */ +/* $Id: nftl.h,v 1.10 2000/12/29 00:25:38 dwmw2 Exp $ */ + +#ifndef __MTD_NFTL_H__ +#define __MTD_NFTL_H__ + +/* Block Control Information */ + +struct nftl_bci { + unsigned char ECCSig[6]; + __u8 Status; + __u8 Status1; +}__attribute__((packed)); + +/* Unit Control Information */ + +struct nftl_uci0 { + __u16 VirtUnitNum; + __u16 ReplUnitNum; + __u16 SpareVirtUnitNum; + __u16 SpareReplUnitNum; +} __attribute__((packed)); + +struct nftl_uci1 { + __u32 WearInfo; + __u16 EraseMark; + __u16 EraseMark1; +} __attribute__((packed)); + +struct nftl_uci2 { + __u16 FoldMark; + __u16 FoldMark1; + __u32 unused; +} __attribute__((packed)); + +union nftl_uci { + struct nftl_uci0 a; + struct nftl_uci1 b; + struct nftl_uci2 c; +}; + +struct nftl_oob { + struct nftl_bci b; + union nftl_uci u; +}; + +/* NFTL Media Header */ + +struct NFTLMediaHeader { + char DataOrgID[6]; + __u16 NumEraseUnits; + __u16 FirstPhysicalEUN; + __u32 FormattedSize; + unsigned char UnitSizeFactor; +} __attribute__((packed)); + +#define MAX_ERASE_ZONES (8192 - 512) + +#define ERASE_MARK 0x3c69 +#define SECTOR_FREE 0xff +#define SECTOR_USED 0x55 +#define SECTOR_IGNORE 0x11 +#define SECTOR_DELETED 0x00 + +#define FOLD_MARK_IN_PROGRESS 0x5555 + +#define ZONE_GOOD 0xff +#define ZONE_BAD_ORIGINAL 0 +#define ZONE_BAD_MARKED 7 + +/* these info are used in ReplUnitTable */ +#define BLOCK_NIL 0xffff /* last block of a chain */ +#define BLOCK_FREE 0xfffe /* free block */ +#define BLOCK_NOTEXPLORED 0xfffd /* non explored block, only used during mounting */ +#define BLOCK_RESERVED 0xfffc /* bios block or bad block */ + +struct NFTLrecord { + struct DiskOnChip *mtd; + __u16 MediaUnit, SpareMediaUnit; + __u32 EraseSize; + struct NFTLMediaHeader MediaHdr; + int usecount; + unsigned char heads; + unsigned char sectors; + unsigned short cylinders; + __u16 numvunits; + __u16 lastEUN; /* should be suppressed */ + __u16 numfreeEUNs; + __u16 LastFreeEUN; /* To speed up finding a free EUN */ + __u32 long nr_sects; + int head,sect,cyl; + __u16 *EUNtable; /* [numvunits]: First EUN for each virtual unit */ + __u16 *ReplUnitTable; /* [numEUNs]: ReplUnitNumber for each */ + unsigned int nb_blocks; /* number of physical blocks */ + unsigned int nb_boot_blocks; /* number of blocks used by the bios */ +}; + +#define MAX_NFTLS 16 +#define MAX_SECTORS_PER_UNIT 32 +#define NFTL_PARTN_BITS 4 + +#endif /* __MTD_NFTL_H__ */ |