Update MTD to that of Linux 2.6.22.1
[kernel/u-boot.git] / include / nand.h
1 /*
2  * (C) Copyright 2005
3  * 2N Telekomunikace, a.s. <www.2n.cz>
4  * Ladislav Michl <michl@2n.cz>
5  *
6  * See file CREDITS for list of people who contributed to this
7  * project.
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * version 2 as published by the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23
24 #ifndef _NAND_H_
25 #define _NAND_H_
26
27 extern void nand_init(void);
28
29 #ifndef CFG_NAND_LEGACY
30 #include <linux/mtd/compat.h>
31 #include <linux/mtd/mtd.h>
32 #include <linux/mtd/nand.h>
33
34 typedef struct mtd_info nand_info_t;
35
36 extern int nand_curr_device;
37 extern nand_info_t nand_info[];
38
39 static inline int nand_read(nand_info_t *info, off_t ofs, size_t *len, u_char *buf)
40 {
41         return info->read(info, ofs, *len, (size_t *)len, buf);
42 }
43
44 static inline int nand_write(nand_info_t *info, off_t ofs, size_t *len, u_char *buf)
45 {
46         return info->write(info, ofs, *len, (size_t *)len, buf);
47 }
48
49 static inline int nand_block_isbad(nand_info_t *info, off_t ofs)
50 {
51         return info->block_isbad(info, ofs);
52 }
53
54 static inline int nand_erase(nand_info_t *info, off_t off, size_t size)
55 {
56         struct erase_info instr;
57
58         instr.mtd = info;
59         instr.addr = off;
60         instr.len = size;
61         instr.callback = 0;
62
63         return info->erase(info, &instr);
64 }
65
66
67 /*****************************************************************************
68  * declarations from nand_util.c
69  ****************************************************************************/
70
71 struct nand_write_options {
72         u_char *buffer;         /* memory block containing image to write */
73         ulong length;           /* number of bytes to write */
74         ulong offset;           /* start address in NAND */
75         int quiet;              /* don't display progress messages */
76         int autoplace;          /* if true use auto oob layout */
77         int forcejffs2;         /* force jffs2 oob layout */
78         int forceyaffs;         /* force yaffs oob layout */
79         int noecc;              /* write without ecc */
80         int writeoob;           /* image contains oob data */
81         int pad;                /* pad to page size */
82         int blockalign;         /* 1|2|4 set multiple of eraseblocks
83                                  * to align to */
84 };
85
86 typedef struct nand_write_options nand_write_options_t;
87 typedef struct mtd_oob_ops mtd_oob_ops_t;
88
89 struct nand_read_options {
90         u_char *buffer;         /* memory block in which read image is written*/
91         ulong length;           /* number of bytes to read */
92         ulong offset;           /* start address in NAND */
93         int quiet;              /* don't display progress messages */
94         int readoob;            /* put oob data in image */
95 };
96
97 typedef struct nand_read_options nand_read_options_t;
98
99 struct nand_erase_options {
100         ulong length;           /* number of bytes to erase */
101         ulong offset;           /* first address in NAND to erase */
102         int quiet;              /* don't display progress messages */
103         int jffs2;              /* if true: format for jffs2 usage
104                                  * (write appropriate cleanmarker blocks) */
105         int scrub;              /* if true, really clean NAND by erasing
106                                  * bad blocks (UNSAFE) */
107 };
108
109 typedef struct nand_erase_options nand_erase_options_t;
110
111 int nand_write_opts(nand_info_t *mtd, loff_t to, mtd_oob_ops_t *ops);
112
113 int nand_read_opts(nand_info_t *meminfo, const nand_read_options_t *opts);
114 int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts);
115
116 #define NAND_LOCK_STATUS_TIGHT  0x01
117 #define NAND_LOCK_STATUS_LOCK   0x02
118 #define NAND_LOCK_STATUS_UNLOCK 0x04
119
120 int nand_lock( nand_info_t *meminfo, int tight );
121 int nand_unlock( nand_info_t *meminfo, ulong start, ulong length );
122 int nand_get_lock_status(nand_info_t *meminfo, ulong offset);
123
124 #ifdef CFG_NAND_SELECT_DEVICE
125 void board_nand_select_device(struct nand_chip *nand, int chip);
126 #endif
127
128 #endif /* !CFG_NAND_LEGACY */
129 #endif