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Kyungmin Parkd7e8ce12007-09-10 17:15:14 +09001/*
2 * linux/include/linux/mtd/onenand.h
3 *
4 * Copyright (C) 2005-2007 Samsung Electronics
5 * Kyungmin Park <kyungmin.park@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#ifndef __LINUX_MTD_ONENAND_H
13#define __LINUX_MTD_ONENAND_H
14
15#include <linux/mtd/onenand_regs.h>
16
17/* Note: The header order is impoertant */
18#include <onenand_uboot.h>
19
Kyungmin Parkd438d502008-08-13 09:11:02 +090020#include <linux/mtd/compat.h>
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090021#include <linux/mtd/bbm.h>
22
Amul Kumar Sahacacbe912009-11-06 17:15:31 +053023#define MAX_DIES 2
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090024#define MAX_BUFFERRAM 2
Amul Kumar Sahacacbe912009-11-06 17:15:31 +053025#define MAX_ONENAND_PAGESIZE (4096 + 128)
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090026
27/* Scan and identify a OneNAND device */
28extern int onenand_scan (struct mtd_info *mtd, int max_chips);
29/* Free resources held by the OneNAND device */
30extern void onenand_release (struct mtd_info *mtd);
31
32/**
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090033 * struct onenand_bufferram - OneNAND BufferRAM Data
Kyungmin Parkef0921d2008-11-04 09:24:07 +090034 * @param blockpage block & page address in BufferRAM
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090035 */
36struct onenand_bufferram {
Kyungmin Parkef0921d2008-11-04 09:24:07 +090037 int blockpage;
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090038};
39
40/**
41 * struct onenand_chip - OneNAND Private Flash Chip Data
42 * @param base [BOARDSPECIFIC] address to access OneNAND
Amul Kumar Sahacacbe912009-11-06 17:15:31 +053043 * @dies: [INTERN][FLEXONENAND] number of dies on chip
44 * @boundary: [INTERN][FLEXONENAND] Boundary of the dies
45 * @diesize: [INTERN][FLEXONENAND] Size of the dies
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090046 * @param chipsize [INTERN] the size of one chip for multichip arrays
47 * @param device_id [INTERN] device ID
48 * @param verstion_id [INTERN] version ID
Amul Kumar Sahacacbe912009-11-06 17:15:31 +053049 * @technology [INTERN] describes the internal NAND array technology such as SLC or MLC.
50 * @density_mask: [INTERN] chip density, used for DDP devices
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090051 * @param options [BOARDSPECIFIC] various chip options. They can partly be set to inform onenand_scan about
52 * @param erase_shift [INTERN] number of address bits in a block
53 * @param page_shift [INTERN] number of address bits in a page
54 * @param ppb_shift [INTERN] number of address bits in a pages per block
55 * @param page_mask [INTERN] a page per block mask
Scott Woodc45912d2008-10-24 16:20:43 -050056 * @param writesize [INTERN] a real page size
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090057 * @param bufferam_index [INTERN] BufferRAM index
58 * @param bufferam [INTERN] BufferRAM info
59 * @param readw [REPLACEABLE] hardware specific function for read short
60 * @param writew [REPLACEABLE] hardware specific function for write short
61 * @param command [REPLACEABLE] hardware specific function for writing commands to the chip
62 * @param wait [REPLACEABLE] hardware specific function for wait on ready
63 * @param read_bufferram [REPLACEABLE] hardware specific function for BufferRAM Area
64 * @param write_bufferram [REPLACEABLE] hardware specific function for BufferRAM Area
65 * @param chip_lock [INTERN] spinlock used to protect access to this structure and the chip
66 * @param wq [INTERN] wait queue to sleep on if a OneNAND operation is in progress
67 * @param state [INTERN] the current state of the OneNAND device
68 * @param autooob [REPLACEABLE] the default (auto)placement scheme
69 * @param priv [OPTIONAL] pointer to private chip date
70 */
71struct onenand_chip {
72 void __iomem *base;
Amul Kumar Sahacacbe912009-11-06 17:15:31 +053073 unsigned int dies;
74 unsigned int boundary[MAX_DIES];
75 unsigned int diesize[MAX_DIES];
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090076 unsigned int chipsize;
77 unsigned int device_id;
Kyungmin Parkef0921d2008-11-04 09:24:07 +090078 unsigned int version_id;
Amul Kumar Sahacacbe912009-11-06 17:15:31 +053079 unsigned int technology;
Kyungmin Parkef0921d2008-11-04 09:24:07 +090080 unsigned int density_mask;
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090081 unsigned int options;
82
83 unsigned int erase_shift;
84 unsigned int page_shift;
85 unsigned int ppb_shift; /* Pages per block shift */
86 unsigned int page_mask;
Kyungmin Parkbfd7f382008-08-19 08:42:53 +090087 unsigned int writesize;
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090088
89 unsigned int bufferram_index;
90 struct onenand_bufferram bufferram[MAX_BUFFERRAM];
91
Kyungmin Parkef0921d2008-11-04 09:24:07 +090092 int (*command) (struct mtd_info *mtd, int cmd, loff_t address,
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090093 size_t len);
Kyungmin Parkef0921d2008-11-04 09:24:07 +090094 int (*wait) (struct mtd_info *mtd, int state);
95 int (*bbt_wait) (struct mtd_info *mtd, int state);
Kyungmin Parkce3277a2009-07-21 11:58:04 +090096 void (*unlock_all)(struct mtd_info *mtd);
Kyungmin Parkef0921d2008-11-04 09:24:07 +090097 int (*read_bufferram) (struct mtd_info *mtd, loff_t addr, int area,
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090098 unsigned char *buffer, int offset, size_t count);
Kyungmin Parkef0921d2008-11-04 09:24:07 +090099 int (*write_bufferram) (struct mtd_info *mtd, loff_t addr, int area,
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +0900100 const unsigned char *buffer, int offset,
101 size_t count);
Kyungmin Parkef0921d2008-11-04 09:24:07 +0900102 unsigned short (*read_word) (void __iomem *addr);
103 void (*write_word) (unsigned short value, void __iomem *addr);
104 void (*mmcontrol) (struct mtd_info *mtd, int sync_read);
Kyungmin Parkd438d502008-08-13 09:11:02 +0900105 int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
106 int (*scan_bbt)(struct mtd_info *mtd);
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +0900107
Kyungmin Parkef0921d2008-11-04 09:24:07 +0900108 unsigned char *main_buf;
109 unsigned char *spare_buf;
110#ifdef DONT_USE_UBOOT
111 spinlock_t chip_lock;
112 wait_queue_head_t wq;
113#endif
Kyungmin Parkd438d502008-08-13 09:11:02 +0900114 int state;
Kyungmin Parkef0921d2008-11-04 09:24:07 +0900115 unsigned char *page_buf;
116 unsigned char *oob_buf;
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +0900117
118 struct nand_oobinfo *autooob;
Stefan Roese1ae39862008-12-02 11:06:47 +0100119 int subpagesize;
Kyungmin Parkef0921d2008-11-04 09:24:07 +0900120 struct nand_ecclayout *ecclayout;
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +0900121
122 void *bbm;
123
124 void *priv;
125};
126
Kyungmin Parkbfd7f382008-08-19 08:42:53 +0900127/*
128 * Helper macros
129 */
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +0900130#define ONENAND_CURRENT_BUFFERRAM(this) (this->bufferram_index)
131#define ONENAND_NEXT_BUFFERRAM(this) (this->bufferram_index ^ 1)
132#define ONENAND_SET_NEXT_BUFFERRAM(this) (this->bufferram_index ^= 1)
Kyungmin Parkbfd7f382008-08-19 08:42:53 +0900133#define ONENAND_SET_PREV_BUFFERRAM(this) (this->bufferram_index ^= 1)
134#define ONENAND_SET_BUFFERRAM0(this) (this->bufferram_index = 0)
135#define ONENAND_SET_BUFFERRAM1(this) (this->bufferram_index = 1)
136
Amul Kumar Sahacacbe912009-11-06 17:15:31 +0530137#define FLEXONENAND(this) (this->device_id & DEVICE_IS_FLEXONENAND)
138#define ONENAND_IS_MLC(this) (this->technology & ONENAND_TECHNOLOGY_IS_MLC)
Kyungmin Parkbfd7f382008-08-19 08:42:53 +0900139#define ONENAND_IS_DDP(this) \
140 (this->device_id & ONENAND_DEVICE_IS_DDP)
141
142#define ONENAND_IS_2PLANE(this) (0)
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +0900143
144/*
145 * Options bits
146 */
Kyungmin Parkef0921d2008-11-04 09:24:07 +0900147#define ONENAND_HAS_CONT_LOCK (0x0001)
148#define ONENAND_HAS_UNLOCK_ALL (0x0002)
149#define ONENAND_HAS_2PLANE (0x0004)
Minkyu Kang4678d672009-10-01 17:20:08 +0900150#define ONENAND_RUNTIME_BADBLOCK_CHECK (0x0200)
Kyungmin Parkbfd7f382008-08-19 08:42:53 +0900151#define ONENAND_PAGEBUF_ALLOC (0x1000)
152#define ONENAND_OOBBUF_ALLOC (0x2000)
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +0900153
154/*
155 * OneNAND Flash Manufacturer ID Codes
156 */
Enric Balletbo i Serra456be172010-10-11 21:48:03 +0200157#define ONENAND_MFR_NUMONYX 0x20
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +0900158#define ONENAND_MFR_SAMSUNG 0xec
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +0900159
160/**
161 * struct nand_manufacturers - NAND Flash Manufacturer ID Structure
162 * @param name: Manufacturer name
163 * @param id: manufacturer ID code of device.
164*/
165struct onenand_manufacturers {
166 int id;
167 char *name;
168};
169
Kyungmin Parkbfd7f382008-08-19 08:42:53 +0900170int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
171 struct mtd_oob_ops *ops);
172
Amul Kumar Sahacacbe912009-11-06 17:15:31 +0530173unsigned int onenand_block(struct onenand_chip *this, loff_t addr);
174int flexonenand_region(struct mtd_info *mtd, loff_t addr);
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +0900175#endif /* __LINUX_MTD_ONENAND_H */