include/mtd/nftl-user.h

   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
  27 struct nftl_bci {
  28         unsigned char ECCSig[6];
  29         __u8 Status;
  30         __u8 Status1;
  31 }__attribute__((packed));
  32
  33 /* Unit Control Information */
  34
  35 struct nftl_uci0 {
  36         __u16 VirtUnitNum;
  37         __u16 ReplUnitNum;
  38         __u16 SpareVirtUnitNum;
  39         __u16 SpareReplUnitNum;
  40 } __attribute__((packed));
  41
  42 struct nftl_uci1 {
  43         __u32 WearInfo;
  44         __u16 EraseMark;
  45         __u16 EraseMark1;
  46 } __attribute__((packed));
  47
  48 struct nftl_uci2 {
  49         __u16 FoldMark;
  50         __u16 FoldMark1;
  51         __u32 unused;
  52 } __attribute__((packed));
  53
  54 union nftl_uci {
  55         struct nftl_uci0 a;
  56         struct nftl_uci1 b;
  57         struct nftl_uci2 c;
  58 };
  59
  60 struct nftl_oob {
  61         struct nftl_bci b;
  62         union nftl_uci u;
  63 };
  64
  65 /* NFTL Media Header */
  66
  67 struct 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__ */