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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
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25extern int onenand_scan(struct mtd_info *mtd, int max_chips);
26
27extern void onenand_release(struct mtd_info *mtd);
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33struct onenand_bufferram {
34 int blockpage;
35};
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87struct onenand_chip {
88 void __iomem *base;
89 unsigned dies;
90 unsigned boundary[MAX_DIES];
91 loff_t diesize[MAX_DIES];
92 unsigned int chipsize;
93 unsigned int device_id;
94 unsigned int version_id;
95 unsigned int technology;
96 unsigned int density_mask;
97 unsigned int options;
98
99 unsigned int erase_shift;
100 unsigned int page_shift;
101 unsigned int page_mask;
102 unsigned int writesize;
103
104 unsigned int bufferram_index;
105 struct onenand_bufferram bufferram[MAX_BUFFERRAM];
106
107 int (*command)(struct mtd_info *mtd, int cmd, loff_t address, size_t len);
108 int (*wait)(struct mtd_info *mtd, int state);
109 int (*bbt_wait)(struct mtd_info *mtd, int state);
110 void (*unlock_all)(struct mtd_info *mtd);
111 int (*read_bufferram)(struct mtd_info *mtd, int area,
112 unsigned char *buffer, int offset, size_t count);
113 int (*write_bufferram)(struct mtd_info *mtd, int area,
114 const unsigned char *buffer, int offset, size_t count);
115 unsigned short (*read_word)(void __iomem *addr);
116 void (*write_word)(unsigned short value, void __iomem *addr);
117 void (*mmcontrol)(struct mtd_info *mtd, int sync_read);
118 int (*chip_probe)(struct mtd_info *mtd);
119 int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
120 int (*scan_bbt)(struct mtd_info *mtd);
121 int (*enable)(struct mtd_info *mtd);
122 int (*disable)(struct mtd_info *mtd);
123
124 struct completion complete;
125 int irq;
126
127 spinlock_t chip_lock;
128 wait_queue_head_t wq;
129 flstate_t state;
130 unsigned char *page_buf;
131 unsigned char *oob_buf;
132#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
133 unsigned char *verify_buf;
134#endif
135
136 int subpagesize;
137 struct nand_ecclayout *ecclayout;
138
139 void *bbm;
140
141 void *priv;
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149 unsigned int ongoing;
150};
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154
155#define ONENAND_PAGES_PER_BLOCK (1<<6)
156
157#define ONENAND_CURRENT_BUFFERRAM(this) (this->bufferram_index)
158#define ONENAND_NEXT_BUFFERRAM(this) (this->bufferram_index ^ 1)
159#define ONENAND_SET_NEXT_BUFFERRAM(this) (this->bufferram_index ^= 1)
160#define ONENAND_SET_PREV_BUFFERRAM(this) (this->bufferram_index ^= 1)
161#define ONENAND_SET_BUFFERRAM0(this) (this->bufferram_index = 0)
162#define ONENAND_SET_BUFFERRAM1(this) (this->bufferram_index = 1)
163
164#define FLEXONENAND(this) \
165 (this->device_id & DEVICE_IS_FLEXONENAND)
166#define ONENAND_GET_SYS_CFG1(this) \
167 (this->read_word(this->base + ONENAND_REG_SYS_CFG1))
168#define ONENAND_SET_SYS_CFG1(v, this) \
169 (this->write_word(v, this->base + ONENAND_REG_SYS_CFG1))
170
171#define ONENAND_IS_DDP(this) \
172 (this->device_id & ONENAND_DEVICE_IS_DDP)
173
174#define ONENAND_IS_MLC(this) \
175 (this->technology & ONENAND_TECHNOLOGY_IS_MLC)
176
177#ifdef CONFIG_MTD_ONENAND_2X_PROGRAM
178#define ONENAND_IS_2PLANE(this) \
179 (this->options & ONENAND_HAS_2PLANE)
180#else
181#define ONENAND_IS_2PLANE(this) (0)
182#endif
183
184#define ONENAND_IS_CACHE_PROGRAM(this) \
185 (this->options & ONENAND_HAS_CACHE_PROGRAM)
186
187#define ONENAND_IS_NOP_1(this) \
188 (this->options & ONENAND_HAS_NOP_1)
189
190
191#define ONENAND_CHECK_BYTE_ACCESS(addr) (addr & 0x1)
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196#define ONENAND_HAS_CONT_LOCK (0x0001)
197#define ONENAND_HAS_UNLOCK_ALL (0x0002)
198#define ONENAND_HAS_2PLANE (0x0004)
199#define ONENAND_HAS_4KB_PAGE (0x0008)
200#define ONENAND_HAS_CACHE_PROGRAM (0x0010)
201#define ONENAND_HAS_NOP_1 (0x0020)
202#define ONENAND_SKIP_UNLOCK_CHECK (0x0100)
203#define ONENAND_PAGEBUF_ALLOC (0x1000)
204#define ONENAND_OOBBUF_ALLOC (0x2000)
205#define ONENAND_SKIP_INITIAL_UNLOCKING (0x4000)
206
207#define ONENAND_IS_4KB_PAGE(this) \
208 (this->options & ONENAND_HAS_4KB_PAGE)
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212
213#define ONENAND_MFR_SAMSUNG 0xec
214#define ONENAND_MFR_NUMONYX 0x20
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221struct onenand_manufacturers {
222 int id;
223 char *name;
224};
225
226int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
227 struct mtd_oob_ops *ops);
228unsigned onenand_block(struct onenand_chip *this, loff_t addr);
229loff_t onenand_addr(struct onenand_chip *this, int block);
230int flexonenand_region(struct mtd_info *mtd, loff_t addr);
231
232struct mtd_partition;
233
234struct onenand_platform_data {
235 void (*mmcontrol)(struct mtd_info *mtd, int sync_read);
236 int (*read_bufferram)(struct mtd_info *mtd, int area,
237 unsigned char *buffer, int offset, size_t count);
238 struct mtd_partition *parts;
239 unsigned int nr_parts;
240};
241
242#endif
243