include/linux/mtd/nftl.h

   1 /*
   2  * $Id: nftl.h,v 1.16 2004/06/30 14:49:00 dbrown Exp $
   3  *
   4  * (C) 1999-2003 David Woodhouse <dwmw2@infradead.org>
   5  */
   6
   7 #ifndef __MTD_NFTL_H__
   8 #define __MTD_NFTL_H__
   9
  10 #include <linux/mtd/mtd.h>
  11 #include <linux/mtd/blktrans.h>
  12
  13 #include <mtd/nftl-user.h>
  14
  15 /* these info are used in ReplUnitTable */
  16 #define BLOCK_NIL          0xffff /* last block of a chain */
  17 #define BLOCK_FREE         0xfffe /* free block */
  18 #define BLOCK_NOTEXPLORED  0xfffd /* non explored block, only used during mounting */
  19 #define BLOCK_RESERVED     0xfffc /* bios block or bad block */
  20
  21 struct NFTLrecord {
  22         struct mtd_blktrans_dev mbd;
  23         __u16 MediaUnit, SpareMediaUnit;
  24         __u32 EraseSize;
  25         struct NFTLMediaHeader MediaHdr;
  26         int usecount;
  27         unsigned char heads;
  28         unsigned char sectors;
  29         unsigned short cylinders;
  30         __u16 numvunits;
  31         __u16 lastEUN;                  /* should be suppressed */
  32         __u16 numfreeEUNs;
  33         __u16 LastFreeEUN;              /* To speed up finding a free EUN */
  34         int head,sect,cyl;
  35         __u16 *EUNtable;                /* [numvunits]: First EUN for each virtual unit  */
  36         __u16 *ReplUnitTable;           /* [numEUNs]: ReplUnitNumber for each */
  37         unsigned int nb_blocks;         /* number of physical blocks */
  38         unsigned int nb_boot_blocks;    /* number of blocks used by the bios */
  39         struct erase_info instr;
  40         struct nand_ecclayout oobinfo;
  41 };
  42
  43 int NFTL_mount(struct NFTLrecord *s);
  44 int NFTL_formatblock(struct NFTLrecord *s, int block);
  45
  46 #ifndef NFTL_MAJOR
  47 #define NFTL_MAJOR 93
  48 #endif
  49
  50 #define MAX_NFTLS 16
  51 #define MAX_SECTORS_PER_UNIT 64
  52 #define NFTL_PARTN_BITS 4
  53
  54 #endif /* __MTD_NFTL_H__ */