linux/include/mtd/nftl-user.h
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   1/*
   2 * Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org>
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License as published by
   6 * the Free Software Foundation; either version 2 of the License, or
   7 * (at your option) any later version.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write to the Free Software
  16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 *
  18 */
  19
  20#ifndef __MTD_NFTL_USER_H__
  21#define __MTD_NFTL_USER_H__
  22
  23#include <linux/types.h>
  24
  25/* Block Control Information */
  26
  27struct nftl_bci {
  28        unsigned char ECCSig[6];
  29        __u8 Status;
  30        __u8 Status1;
  31}__attribute__((packed));
  32
  33/* Unit Control Information */
  34
  35struct nftl_uci0 {
  36        __u16 VirtUnitNum;
  37        __u16 ReplUnitNum;
  38        __u16 SpareVirtUnitNum;
  39        __u16 SpareReplUnitNum;
  40} __attribute__((packed));
  41
  42struct nftl_uci1 {
  43        __u32 WearInfo;
  44        __u16 EraseMark;
  45        __u16 EraseMark1;
  46} __attribute__((packed));
  47
  48struct nftl_uci2 {
  49        __u16 FoldMark;
  50        __u16 FoldMark1;
  51        __u32 unused;
  52} __attribute__((packed));
  53
  54union nftl_uci {
  55        struct nftl_uci0 a;
  56        struct nftl_uci1 b;
  57        struct nftl_uci2 c;
  58};
  59
  60struct nftl_oob {
  61        struct nftl_bci b;
  62        union nftl_uci u;
  63};
  64
  65/* NFTL Media Header */
  66
  67struct NFTLMediaHeader {
  68        char DataOrgID[6];
  69        __u16 NumEraseUnits;
  70        __u16 FirstPhysicalEUN;
  71        __u32 FormattedSize;
  72        unsigned char UnitSizeFactor;
  73} __attribute__((packed));
  74
  75#define MAX_ERASE_ZONES (8192 - 512)
  76
  77#define ERASE_MARK 0x3c69
  78#define SECTOR_FREE 0xff
  79#define SECTOR_USED 0x55
  80#define SECTOR_IGNORE 0x11
  81#define SECTOR_DELETED 0x00
  82
  83#define FOLD_MARK_IN_PROGRESS 0x5555
  84
  85#define ZONE_GOOD 0xff
  86#define ZONE_BAD_ORIGINAL 0
  87#define ZONE_BAD_MARKED 7
  88
  89
  90#endif /* __MTD_NFTL_USER_H__ */
  91
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