xref: /openbmc/linux/include/uapi/mtd/nftl-user.h (revision e2be04c7)
1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2 /*
3  * Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
18  *
19  */
20 
21 #ifndef __MTD_NFTL_USER_H__
22 #define __MTD_NFTL_USER_H__
23 
24 #include <linux/types.h>
25 
26 /* Block Control Information */
27 
28 struct nftl_bci {
29 	unsigned char ECCSig[6];
30 	__u8 Status;
31 	__u8 Status1;
32 }__attribute__((packed));
33 
34 /* Unit Control Information */
35 
36 struct nftl_uci0 {
37 	__u16 VirtUnitNum;
38 	__u16 ReplUnitNum;
39 	__u16 SpareVirtUnitNum;
40 	__u16 SpareReplUnitNum;
41 } __attribute__((packed));
42 
43 struct nftl_uci1 {
44 	__u32 WearInfo;
45 	__u16 EraseMark;
46 	__u16 EraseMark1;
47 } __attribute__((packed));
48 
49 struct nftl_uci2 {
50         __u16 FoldMark;
51         __u16 FoldMark1;
52 	__u32 unused;
53 } __attribute__((packed));
54 
55 union nftl_uci {
56 	struct nftl_uci0 a;
57 	struct nftl_uci1 b;
58 	struct nftl_uci2 c;
59 };
60 
61 struct nftl_oob {
62 	struct nftl_bci b;
63 	union nftl_uci u;
64 };
65 
66 /* NFTL Media Header */
67 
68 struct NFTLMediaHeader {
69 	char DataOrgID[6];
70 	__u16 NumEraseUnits;
71 	__u16 FirstPhysicalEUN;
72 	__u32 FormattedSize;
73 	unsigned char UnitSizeFactor;
74 } __attribute__((packed));
75 
76 #define MAX_ERASE_ZONES (8192 - 512)
77 
78 #define ERASE_MARK 0x3c69
79 #define SECTOR_FREE 0xff
80 #define SECTOR_USED 0x55
81 #define SECTOR_IGNORE 0x11
82 #define SECTOR_DELETED 0x00
83 
84 #define FOLD_MARK_IN_PROGRESS 0x5555
85 
86 #define ZONE_GOOD 0xff
87 #define ZONE_BAD_ORIGINAL 0
88 #define ZONE_BAD_MARKED 7
89 
90 
91 #endif /* __MTD_NFTL_USER_H__ */
92