include/linux/mtd/inftl.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *      inftl.h -- defines to support the Inverse NAND Flash Translation Layer
   4  *
   5  *      (C) Copyright 2002, Greg Ungerer (gerg@snapgear.com)
   6  */
   7
   8 #ifndef __MTD_INFTL_H__
   9 #define __MTD_INFTL_H__
  10
  11 #ifndef __KERNEL__
  12 #error This is a kernel header. Perhaps include nftl-user.h instead?
  13 #endif
  14
  15 #include <linux/mtd/blktrans.h>
  16 #include <linux/mtd/mtd.h>
  17 #include <linux/mtd/nftl.h>
  18
  19 #include <mtd/inftl-user.h>
  20
  21 #ifndef INFTL_MAJOR
  22 #define INFTL_MAJOR 96
  23 #endif
  24 #define INFTL_PARTN_BITS 4
  25
  26 #ifdef __KERNEL__
  27
  28 struct INFTLrecord {
  29         struct mtd_blktrans_dev mbd;
  30         __u16 MediaUnit;
  31         __u32 EraseSize;
  32         struct INFTLMediaHeader MediaHdr;
  33         int usecount;
  34         unsigned char heads;
  35         unsigned char sectors;
  36         unsigned short cylinders;
  37         __u16 numvunits;
  38         __u16 firstEUN;
  39         __u16 lastEUN;
  40         __u16 numfreeEUNs;
  41         __u16 LastFreeEUN;              /* To speed up finding a free EUN */
  42         int head,sect,cyl;
  43         __u16 *PUtable;                 /* Physical Unit Table */
  44         __u16 *VUtable;                 /* Virtual Unit Table */
  45         unsigned int nb_blocks;         /* number of physical blocks */
  46         unsigned int nb_boot_blocks;    /* number of blocks used by the bios */
  47         struct erase_info instr;
  48 };
  49
  50 int INFTL_mount(struct INFTLrecord *s);
  51 int INFTL_formatblock(struct INFTLrecord *s, int block);
  52
  53 void INFTL_dumptables(struct INFTLrecord *s);
  54 void INFTL_dumpVUchains(struct INFTLrecord *s);
  55
  56 int inftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
  57                    size_t *retlen, uint8_t *buf);
  58 int inftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
  59                     size_t *retlen, uint8_t *buf);
  60
  61 #endif /* __KERNEL__ */
  62
  63 #endif /* __MTD_INFTL_H__ */