xref: /openbmc/linux/include/uapi/mtd/nftl-user.h (revision 2c684d89)
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__ */
91