241 lines
7.9 KiB
C
241 lines
7.9 KiB
C
|
/*
|
||
|
|
* linux/include/linux/mtd/onenand.h
|
||
|
|
*
|
||
|
|
* Copyright © 2005-2009 Samsung Electronics
|
||
|
|
* Kyungmin Park <kyungmin.park@samsung.com>
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __LINUX_MTD_ONENAND_H
|
||
|
|
#define __LINUX_MTD_ONENAND_H
|
||
|
|
|
||
|
|
#include <linux/spinlock.h>
|
||
|
|
#include <linux/completion.h>
|
||
|
|
#include <linux/mtd/flashchip.h>
|
||
|
|
#include <linux/mtd/onenand_regs.h>
|
||
|
|
#include <linux/mtd/bbm.h>
|
||
|
|
|
||
|
|
#define MAX_DIES 2
|
||
|
|
#define MAX_BUFFERRAM 2
|
||
|
|
|
||
|
|
/* Scan and identify a OneNAND device */
|
||
|
|
extern int onenand_scan(struct mtd_info *mtd, int max_chips);
|
||
|
|
/* Free resources held by the OneNAND device */
|
||
|
|
extern void onenand_release(struct mtd_info *mtd);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct onenand_bufferram - OneNAND BufferRAM Data
|
||
|
|
* @blockpage: block & page address in BufferRAM
|
||
|
|
*/
|
||
|
|
struct onenand_bufferram {
|
||
|
|
int blockpage;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct onenand_chip - OneNAND Private Flash Chip Data
|
||
|
|
* @base: [BOARDSPECIFIC] address to access OneNAND
|
||
|
|
* @dies: [INTERN][FLEX-ONENAND] number of dies on chip
|
||
|
|
* @boundary: [INTERN][FLEX-ONENAND] Boundary of the dies
|
||
|
|
* @diesize: [INTERN][FLEX-ONENAND] Size of the dies
|
||
|
|
* @chipsize: [INTERN] the size of one chip for multichip arrays
|
||
|
|
* FIXME For Flex-OneNAND, chipsize holds maximum possible
|
||
|
|
* device size ie when all blocks are considered MLC
|
||
|
|
* @device_id: [INTERN] device ID
|
||
|
|
* @density_mask: chip density, used for DDP devices
|
||
|
|
* @verstion_id: [INTERN] version ID
|
||
|
|
* @options: [BOARDSPECIFIC] various chip options. They can
|
||
|
|
* partly be set to inform onenand_scan about
|
||
|
|
* @erase_shift: [INTERN] number of address bits in a block
|
||
|
|
* @page_shift: [INTERN] number of address bits in a page
|
||
|
|
* @page_mask: [INTERN] a page per block mask
|
||
|
|
* @writesize: [INTERN] a real page size
|
||
|
|
* @bufferram_index: [INTERN] BufferRAM index
|
||
|
|
* @bufferram: [INTERN] BufferRAM info
|
||
|
|
* @readw: [REPLACEABLE] hardware specific function for read short
|
||
|
|
* @writew: [REPLACEABLE] hardware specific function for write short
|
||
|
|
* @command: [REPLACEABLE] hardware specific function for writing
|
||
|
|
* commands to the chip
|
||
|
|
* @wait: [REPLACEABLE] hardware specific function for wait on ready
|
||
|
|
* @bbt_wait: [REPLACEABLE] hardware specific function for bbt wait on ready
|
||
|
|
* @unlock_all: [REPLACEABLE] hardware specific function for unlock all
|
||
|
|
* @read_bufferram: [REPLACEABLE] hardware specific function for BufferRAM Area
|
||
|
|
* @write_bufferram: [REPLACEABLE] hardware specific function for BufferRAM Area
|
||
|
|
* @read_word: [REPLACEABLE] hardware specific function for read
|
||
|
|
* register of OneNAND
|
||
|
|
* @write_word: [REPLACEABLE] hardware specific function for write
|
||
|
|
* register of OneNAND
|
||
|
|
* @mmcontrol: sync burst read function
|
||
|
|
* @chip_probe: [REPLACEABLE] hardware specific function for chip probe
|
||
|
|
* @block_markbad: function to mark a block as bad
|
||
|
|
* @scan_bbt: [REPLACEALBE] hardware specific function for scanning
|
||
|
|
* Bad block Table
|
||
|
|
* @chip_lock: [INTERN] spinlock used to protect access to this
|
||
|
|
* structure and the chip
|
||
|
|
* @wq: [INTERN] wait queue to sleep on if a OneNAND
|
||
|
|
* operation is in progress
|
||
|
|
* @state: [INTERN] the current state of the OneNAND device
|
||
|
|
* @page_buf: [INTERN] page main data buffer
|
||
|
|
* @oob_buf: [INTERN] page oob data buffer
|
||
|
|
* @subpagesize: [INTERN] holds the subpagesize
|
||
|
|
* @bbm: [REPLACEABLE] pointer to Bad Block Management
|
||
|
|
* @priv: [OPTIONAL] pointer to private chip date
|
||
|
|
*/
|
||
|
|
struct onenand_chip {
|
||
|
|
void __iomem *base;
|
||
|
|
unsigned dies;
|
||
|
|
unsigned boundary[MAX_DIES];
|
||
|
|
loff_t diesize[MAX_DIES];
|
||
|
|
unsigned int chipsize;
|
||
|
|
unsigned int device_id;
|
||
|
|
unsigned int version_id;
|
||
|
|
unsigned int technology;
|
||
|
|
unsigned int density_mask;
|
||
|
|
unsigned int options;
|
||
|
|
|
||
|
|
unsigned int erase_shift;
|
||
|
|
unsigned int page_shift;
|
||
|
|
unsigned int page_mask;
|
||
|
|
unsigned int writesize;
|
||
|
|
|
||
|
|
unsigned int bufferram_index;
|
||
|
|
struct onenand_bufferram bufferram[MAX_BUFFERRAM];
|
||
|
|
|
||
|
|
int (*command)(struct mtd_info *mtd, int cmd, loff_t address, size_t len);
|
||
|
|
int (*wait)(struct mtd_info *mtd, int state);
|
||
|
|
int (*bbt_wait)(struct mtd_info *mtd, int state);
|
||
|
|
void (*unlock_all)(struct mtd_info *mtd);
|
||
|
|
int (*read_bufferram)(struct mtd_info *mtd, int area,
|
||
|
|
unsigned char *buffer, int offset, size_t count);
|
||
|
|
int (*write_bufferram)(struct mtd_info *mtd, int area,
|
||
|
|
const unsigned char *buffer, int offset, size_t count);
|
||
|
|
unsigned short (*read_word)(void __iomem *addr);
|
||
|
|
void (*write_word)(unsigned short value, void __iomem *addr);
|
||
|
|
void (*mmcontrol)(struct mtd_info *mtd, int sync_read);
|
||
|
|
int (*chip_probe)(struct mtd_info *mtd);
|
||
|
|
int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
|
||
|
|
int (*scan_bbt)(struct mtd_info *mtd);
|
||
|
|
int (*enable)(struct mtd_info *mtd);
|
||
|
|
int (*disable)(struct mtd_info *mtd);
|
||
|
|
|
||
|
|
struct completion complete;
|
||
|
|
int irq;
|
||
|
|
|
||
|
|
spinlock_t chip_lock;
|
||
|
|
wait_queue_head_t wq;
|
||
|
|
flstate_t state;
|
||
|
|
unsigned char *page_buf;
|
||
|
|
unsigned char *oob_buf;
|
||
|
|
#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
|
||
|
|
unsigned char *verify_buf;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int subpagesize;
|
||
|
|
|
||
|
|
void *bbm;
|
||
|
|
|
||
|
|
void *priv;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Shows that the current operation is composed
|
||
|
|
* of sequence of commands. For example, cache program.
|
||
|
|
* Such command status OnGo bit is checked at the end of
|
||
|
|
* sequence.
|
||
|
|
*/
|
||
|
|
unsigned int ongoing;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Helper macros
|
||
|
|
*/
|
||
|
|
#define ONENAND_PAGES_PER_BLOCK (1<<6)
|
||
|
|
|
||
|
|
#define ONENAND_CURRENT_BUFFERRAM(this) (this->bufferram_index)
|
||
|
|
#define ONENAND_NEXT_BUFFERRAM(this) (this->bufferram_index ^ 1)
|
||
|
|
#define ONENAND_SET_NEXT_BUFFERRAM(this) (this->bufferram_index ^= 1)
|
||
|
|
#define ONENAND_SET_PREV_BUFFERRAM(this) (this->bufferram_index ^= 1)
|
||
|
|
#define ONENAND_SET_BUFFERRAM0(this) (this->bufferram_index = 0)
|
||
|
|
#define ONENAND_SET_BUFFERRAM1(this) (this->bufferram_index = 1)
|
||
|
|
|
||
|
|
#define FLEXONENAND(this) \
|
||
|
|
(this->device_id & DEVICE_IS_FLEXONENAND)
|
||
|
|
#define ONENAND_GET_SYS_CFG1(this) \
|
||
|
|
(this->read_word(this->base + ONENAND_REG_SYS_CFG1))
|
||
|
|
#define ONENAND_SET_SYS_CFG1(v, this) \
|
||
|
|
(this->write_word(v, this->base + ONENAND_REG_SYS_CFG1))
|
||
|
|
|
||
|
|
#define ONENAND_IS_DDP(this) \
|
||
|
|
(this->device_id & ONENAND_DEVICE_IS_DDP)
|
||
|
|
|
||
|
|
#define ONENAND_IS_MLC(this) \
|
||
|
|
(this->technology & ONENAND_TECHNOLOGY_IS_MLC)
|
||
|
|
|
||
|
|
#ifdef CONFIG_MTD_ONENAND_2X_PROGRAM
|
||
|
|
#define ONENAND_IS_2PLANE(this) \
|
||
|
|
(this->options & ONENAND_HAS_2PLANE)
|
||
|
|
#else
|
||
|
|
#define ONENAND_IS_2PLANE(this) (0)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define ONENAND_IS_CACHE_PROGRAM(this) \
|
||
|
|
(this->options & ONENAND_HAS_CACHE_PROGRAM)
|
||
|
|
|
||
|
|
#define ONENAND_IS_NOP_1(this) \
|
||
|
|
(this->options & ONENAND_HAS_NOP_1)
|
||
|
|
|
||
|
|
/* Check byte access in OneNAND */
|
||
|
|
#define ONENAND_CHECK_BYTE_ACCESS(addr) (addr & 0x1)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Options bits
|
||
|
|
*/
|
||
|
|
#define ONENAND_HAS_CONT_LOCK (0x0001)
|
||
|
|
#define ONENAND_HAS_UNLOCK_ALL (0x0002)
|
||
|
|
#define ONENAND_HAS_2PLANE (0x0004)
|
||
|
|
#define ONENAND_HAS_4KB_PAGE (0x0008)
|
||
|
|
#define ONENAND_HAS_CACHE_PROGRAM (0x0010)
|
||
|
|
#define ONENAND_HAS_NOP_1 (0x0020)
|
||
|
|
#define ONENAND_SKIP_UNLOCK_CHECK (0x0100)
|
||
|
|
#define ONENAND_PAGEBUF_ALLOC (0x1000)
|
||
|
|
#define ONENAND_OOBBUF_ALLOC (0x2000)
|
||
|
|
#define ONENAND_SKIP_INITIAL_UNLOCKING (0x4000)
|
||
|
|
|
||
|
|
#define ONENAND_IS_4KB_PAGE(this) \
|
||
|
|
(this->options & ONENAND_HAS_4KB_PAGE)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* OneNAND Flash Manufacturer ID Codes
|
||
|
|
*/
|
||
|
|
#define ONENAND_MFR_SAMSUNG 0xec
|
||
|
|
#define ONENAND_MFR_NUMONYX 0x20
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct onenand_manufacturers - NAND Flash Manufacturer ID Structure
|
||
|
|
* @name: Manufacturer name
|
||
|
|
* @id: manufacturer ID code of device.
|
||
|
|
*/
|
||
|
|
struct onenand_manufacturers {
|
||
|
|
int id;
|
||
|
|
char *name;
|
||
|
|
};
|
||
|
|
|
||
|
|
int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
|
||
|
|
struct mtd_oob_ops *ops);
|
||
|
|
unsigned onenand_block(struct onenand_chip *this, loff_t addr);
|
||
|
|
loff_t onenand_addr(struct onenand_chip *this, int block);
|
||
|
|
int flexonenand_region(struct mtd_info *mtd, loff_t addr);
|
||
|
|
|
||
|
|
struct mtd_partition;
|
||
|
|
|
||
|
|
struct onenand_platform_data {
|
||
|
|
void (*mmcontrol)(struct mtd_info *mtd, int sync_read);
|
||
|
|
int (*read_bufferram)(struct mtd_info *mtd, int area,
|
||
|
|
unsigned char *buffer, int offset, size_t count);
|
||
|
|
struct mtd_partition *parts;
|
||
|
|
unsigned int nr_parts;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* __LINUX_MTD_ONENAND_H */
|