LXR uboot/fs/yaffs2/yaffs

   1/*
   2 * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
   3 *
   4 * Copyright (C) 2002-2011 Aleph One Ltd.
   5 *   for Toby Churchill Ltd and Brightstar Engineering
   6 *
   7 * Created by Charles Manning <charles@aleph1.co.uk>
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU Lesser General Public License version 2.1 as
  11 * published by the Free Software Foundation.
  12 *
  13 * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
  14 */
  15
  16
  17#ifndef __YNANDIF_H__
  18#define __YNANDIF_H__
  19
  20#include "yaffs_guts.h"
  21
  22struct ynandif_Geometry {
  23        unsigned start_block;
  24        unsigned end_block;
  25        unsigned dataSize;
  26        unsigned spareSize;
  27        unsigned pagesPerBlock;
  28        unsigned hasECC;
  29        unsigned inband_tags;
  30        unsigned useYaffs2;
  31
  32        int (*initialise)(struct yaffs_dev *dev);
  33        int (*deinitialise)(struct yaffs_dev *dev);
  34
  35        int (*readChunk) (struct yaffs_dev *dev,
  36                                          unsigned pageId,
  37                                          unsigned char *data,
  38                                          unsigned dataLength,
  39                                          unsigned char *spare,
  40                                          unsigned spareLength,
  41                                          int *eccStatus);
  42        /* ECC status is set to 0 for OK, 1 for fixed, -1 for unfixed. */
  43
  44        int (*writeChunk)(struct yaffs_dev *dev,
  45                                          unsigned pageId,
  46                                          const unsigned char *data,
  47                                          unsigned dataLength,
  48                                          const unsigned char *spare,
  49                                          unsigned spareLength);
  50
  51        int (*eraseBlock)(struct yaffs_dev *dev, unsigned blockId);
  52
  53        int (*checkBlockOk)(struct yaffs_dev *dev, unsigned blockId);
  54        int (*markBlockBad)(struct yaffs_dev *dev, unsigned blockId);
  55
  56        void *privateData;
  57
  58};
  59
  60struct yaffs_dev *
  61        yaffs_add_dev_from_geometry(const YCHAR *name,
  62                                        const struct ynandif_Geometry *geometry);
  63
  64
  65#endif
  66