1
2
3
4
5
6
7
8
9
10
11
12#ifndef __LINUX_MTD_ONENAND_H
13#define __LINUX_MTD_ONENAND_H
14
15#include <linux/spinlock.h>
16#include <linux/completion.h>
17#include <linux/mtd/flashchip.h>
18#include <linux/mtd/onenand_regs.h>
19#include <linux/mtd/bbm.h>
20
21#define MAX_DIES 2
22#define MAX_BUFFERRAM 2
23
24
25extern int onenand_scan(struct mtd_info *mtd, int max_chips);
26
27extern void onenand_release(struct mtd_info *mtd);
28
29
30
31
32
33struct onenand_bufferram {
34 int blockpage;
35};
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86struct onenand_chip {
87 void __iomem *base;
88 unsigned dies;
89 unsigned boundary[MAX_DIES];
90 loff_t diesize[MAX_DIES];
91 unsigned int chipsize;
92 unsigned int device_id;
93 unsigned int version_id;
94 unsigned int technology;
95 unsigned int density_mask;
96 unsigned int options;
97
98 unsigned int erase_shift;
99 unsigned int page_shift;
100 unsigned int page_mask;
101 unsigned int writesize;
102
103 unsigned int bufferram_index;
104 struct onenand_bufferram bufferram[MAX_BUFFERRAM];
105
106 int (*command)(struct mtd_info *mtd, int cmd, loff_t address, size_t len);
107 int (*wait)(struct mtd_info *mtd, int state);
108 int (*bbt_wait)(struct mtd_info *mtd, int state);
109 void (*unlock_all)(struct mtd_info *mtd);
110 int (*read_bufferram)(struct mtd_info *mtd, int area,
111 unsigned char *buffer, int offset, size_t count);
112 int (*write_bufferram)(struct mtd_info *mtd, int area,
113 const unsigned char *buffer, int offset, size_t count);
114 unsigned short (*read_word)(void __iomem *addr);
115 void (*write_word)(unsigned short value, void __iomem *addr);
116 void (*mmcontrol)(struct mtd_info *mtd, int sync_read);
117 int (*chip_probe)(struct mtd_info *mtd);
118 int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
119 int (*scan_bbt)(struct mtd_info *mtd);
120 int (*enable)(struct mtd_info *mtd);
121 int (*disable)(struct mtd_info *mtd);
122
123 struct completion complete;
124 int irq;
125
126 spinlock_t chip_lock;
127 wait_queue_head_t wq;
128 flstate_t state;
129 unsigned char *page_buf;
130 unsigned char *oob_buf;
131#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
132 unsigned char *verify_buf;
133#endif
134
135 int subpagesize;
136
137 void *bbm;
138
139 void *priv;
140
141
142
143
144
145
146
147 unsigned int ongoing;
148};
149
150
151
152
153#define ONENAND_PAGES_PER_BLOCK (1<<6)
154
155#define ONENAND_CURRENT_BUFFERRAM(this) (this->bufferram_index)
156#define ONENAND_NEXT_BUFFERRAM(this) (this->bufferram_index ^ 1)
157#define ONENAND_SET_NEXT_BUFFERRAM(this) (this->bufferram_index ^= 1)
158#define ONENAND_SET_PREV_BUFFERRAM(this) (this->bufferram_index ^= 1)
159#define ONENAND_SET_BUFFERRAM0(this) (this->bufferram_index = 0)
160#define ONENAND_SET_BUFFERRAM1(this) (this->bufferram_index = 1)
161
162#define FLEXONENAND(this) \
163 (this->device_id & DEVICE_IS_FLEXONENAND)
164#define ONENAND_GET_SYS_CFG1(this) \
165 (this->read_word(this->base + ONENAND_REG_SYS_CFG1))
166#define ONENAND_SET_SYS_CFG1(v, this) \
167 (this->write_word(v, this->base + ONENAND_REG_SYS_CFG1))
168
169#define ONENAND_IS_DDP(this) \
170 (this->device_id & ONENAND_DEVICE_IS_DDP)
171
172#define ONENAND_IS_MLC(this) \
173 (this->technology & ONENAND_TECHNOLOGY_IS_MLC)
174
175#ifdef CONFIG_MTD_ONENAND_2X_PROGRAM
176#define ONENAND_IS_2PLANE(this) \
177 (this->options & ONENAND_HAS_2PLANE)
178#else
179#define ONENAND_IS_2PLANE(this) (0)
180#endif
181
182#define ONENAND_IS_CACHE_PROGRAM(this) \
183 (this->options & ONENAND_HAS_CACHE_PROGRAM)
184
185#define ONENAND_IS_NOP_1(this) \
186 (this->options & ONENAND_HAS_NOP_1)
187
188
189#define ONENAND_CHECK_BYTE_ACCESS(addr) (addr & 0x1)
190
191
192
193
194#define ONENAND_HAS_CONT_LOCK (0x0001)
195#define ONENAND_HAS_UNLOCK_ALL (0x0002)
196#define ONENAND_HAS_2PLANE (0x0004)
197#define ONENAND_HAS_4KB_PAGE (0x0008)
198#define ONENAND_HAS_CACHE_PROGRAM (0x0010)
199#define ONENAND_HAS_NOP_1 (0x0020)
200#define ONENAND_SKIP_UNLOCK_CHECK (0x0100)
201#define ONENAND_PAGEBUF_ALLOC (0x1000)
202#define ONENAND_OOBBUF_ALLOC (0x2000)
203#define ONENAND_SKIP_INITIAL_UNLOCKING (0x4000)
204
205#define ONENAND_IS_4KB_PAGE(this) \
206 (this->options & ONENAND_HAS_4KB_PAGE)
207
208
209
210
211#define ONENAND_MFR_SAMSUNG 0xec
212#define ONENAND_MFR_NUMONYX 0x20
213
214
215
216
217
218
219struct onenand_manufacturers {
220 int id;
221 char *name;
222};
223
224int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
225 struct mtd_oob_ops *ops);
226unsigned onenand_block(struct onenand_chip *this, loff_t addr);
227loff_t onenand_addr(struct onenand_chip *this, int block);
228int flexonenand_region(struct mtd_info *mtd, loff_t addr);
229
230struct mtd_partition;
231
232struct onenand_platform_data {
233 void (*mmcontrol)(struct mtd_info *mtd, int sync_read);
234 int (*read_bufferram)(struct mtd_info *mtd, int area,
235 unsigned char *buffer, int offset, size_t count);
236 struct mtd_partition *parts;
237 unsigned int nr_parts;
238};
239
240#endif
241