mirror of
https://github.com/smaeul/u-boot.git
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7b15e2bb9b
This lets us use it in more places than just mtd code. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
181 lines
6.1 KiB
C
181 lines
6.1 KiB
C
/*
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* linux/include/linux/mtd/onenand.h
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*
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* Copyright (C) 2005-2007 Samsung Electronics
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* Kyungmin Park <kyungmin.park@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __LINUX_MTD_ONENAND_H
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#define __LINUX_MTD_ONENAND_H
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#include <linux/mtd/onenand_regs.h>
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/* Note: The header order is impoertant */
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#include <onenand_uboot.h>
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#include <linux/compat.h>
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#include <linux/mtd/bbm.h>
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#define MAX_DIES 2
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#define MAX_BUFFERRAM 2
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#define MAX_ONENAND_PAGESIZE (4096 + 128)
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/* Scan and identify a OneNAND device */
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extern int onenand_scan (struct mtd_info *mtd, int max_chips);
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/* Free resources held by the OneNAND device */
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extern void onenand_release (struct mtd_info *mtd);
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/**
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* struct onenand_bufferram - OneNAND BufferRAM Data
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* @param blockpage block & page address in BufferRAM
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*/
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struct onenand_bufferram {
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int blockpage;
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};
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/**
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* struct onenand_chip - OneNAND Private Flash Chip Data
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* @param base [BOARDSPECIFIC] address to access OneNAND
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* @dies: [INTERN][FLEXONENAND] number of dies on chip
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* @boundary: [INTERN][FLEXONENAND] Boundary of the dies
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* @diesize: [INTERN][FLEXONENAND] Size of the dies
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* @param chipsize [INTERN] the size of one chip for multichip arrays
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* @param device_id [INTERN] device ID
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* @param verstion_id [INTERN] version ID
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* @technology [INTERN] describes the internal NAND array technology such as SLC or MLC.
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* @density_mask: [INTERN] chip density, used for DDP devices
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* @param options [BOARDSPECIFIC] various chip options. They can partly be set to inform onenand_scan about
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* @param erase_shift [INTERN] number of address bits in a block
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* @param page_shift [INTERN] number of address bits in a page
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* @param ppb_shift [INTERN] number of address bits in a pages per block
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* @param page_mask [INTERN] a page per block mask
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* @param writesize [INTERN] a real page size
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* @param bufferam_index [INTERN] BufferRAM index
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* @param bufferam [INTERN] BufferRAM info
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* @param readw [REPLACEABLE] hardware specific function for read short
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* @param writew [REPLACEABLE] hardware specific function for write short
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* @param command [REPLACEABLE] hardware specific function for writing commands to the chip
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* @param wait [REPLACEABLE] hardware specific function for wait on ready
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* @param read_bufferram [REPLACEABLE] hardware specific function for BufferRAM Area
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* @param write_bufferram [REPLACEABLE] hardware specific function for BufferRAM Area
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* @param chip_lock [INTERN] spinlock used to protect access to this structure and the chip
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* @param wq [INTERN] wait queue to sleep on if a OneNAND operation is in progress
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* @param state [INTERN] the current state of the OneNAND device
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* @param autooob [REPLACEABLE] the default (auto)placement scheme
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* @param priv [OPTIONAL] pointer to private chip date
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*/
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struct onenand_chip {
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void __iomem *base;
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unsigned int dies;
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unsigned int boundary[MAX_DIES];
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unsigned int diesize[MAX_DIES];
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unsigned int chipsize;
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unsigned int device_id;
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unsigned int version_id;
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unsigned int technology;
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unsigned int density_mask;
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unsigned int options;
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unsigned int erase_shift;
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unsigned int page_shift;
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unsigned int ppb_shift; /* Pages per block shift */
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unsigned int page_mask;
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unsigned int writesize;
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unsigned int bufferram_index;
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struct onenand_bufferram bufferram[MAX_BUFFERRAM];
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int (*command) (struct mtd_info *mtd, int cmd, loff_t address,
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size_t len);
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int (*wait) (struct mtd_info *mtd, int state);
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int (*bbt_wait) (struct mtd_info *mtd, int state);
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void (*unlock_all)(struct mtd_info *mtd);
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int (*read_bufferram) (struct mtd_info *mtd, loff_t addr, int area,
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unsigned char *buffer, int offset, size_t count);
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int (*write_bufferram) (struct mtd_info *mtd, loff_t addr, int area,
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const unsigned char *buffer, int offset,
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size_t count);
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unsigned short (*read_word) (void __iomem *addr);
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void (*write_word) (unsigned short value, void __iomem *addr);
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int (*chip_probe)(struct mtd_info *mtd);
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void (*mmcontrol) (struct mtd_info *mtd, int sync_read);
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int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
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int (*scan_bbt)(struct mtd_info *mtd);
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unsigned char *main_buf;
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unsigned char *spare_buf;
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#ifdef DONT_USE_UBOOT
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spinlock_t chip_lock;
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wait_queue_head_t wq;
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#endif
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int state;
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unsigned char *page_buf;
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unsigned char *oob_buf;
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struct nand_oobinfo *autooob;
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int subpagesize;
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struct nand_ecclayout *ecclayout;
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void *bbm;
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void *priv;
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};
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/*
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* Helper macros
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*/
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#define ONENAND_CURRENT_BUFFERRAM(this) (this->bufferram_index)
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#define ONENAND_NEXT_BUFFERRAM(this) (this->bufferram_index ^ 1)
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#define ONENAND_SET_NEXT_BUFFERRAM(this) (this->bufferram_index ^= 1)
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#define ONENAND_SET_PREV_BUFFERRAM(this) (this->bufferram_index ^= 1)
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#define ONENAND_SET_BUFFERRAM0(this) (this->bufferram_index = 0)
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#define ONENAND_SET_BUFFERRAM1(this) (this->bufferram_index = 1)
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#define FLEXONENAND(this) (this->device_id & DEVICE_IS_FLEXONENAND)
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#define ONENAND_IS_MLC(this) (this->technology & ONENAND_TECHNOLOGY_IS_MLC)
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#define ONENAND_IS_DDP(this) \
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(this->device_id & ONENAND_DEVICE_IS_DDP)
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#define ONENAND_IS_4KB_PAGE(this) \
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(this->options & ONENAND_HAS_4KB_PAGE)
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#define ONENAND_IS_2PLANE(this) (0)
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/*
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* Options bits
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*/
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#define ONENAND_HAS_CONT_LOCK (0x0001)
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#define ONENAND_HAS_UNLOCK_ALL (0x0002)
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#define ONENAND_HAS_2PLANE (0x0004)
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#define ONENAND_HAS_4KB_PAGE (0x0008)
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#define ONENAND_RUNTIME_BADBLOCK_CHECK (0x0200)
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#define ONENAND_PAGEBUF_ALLOC (0x1000)
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#define ONENAND_OOBBUF_ALLOC (0x2000)
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/*
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* OneNAND Flash Manufacturer ID Codes
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*/
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#define ONENAND_MFR_NUMONYX 0x20
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#define ONENAND_MFR_SAMSUNG 0xec
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/**
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* struct nand_manufacturers - NAND Flash Manufacturer ID Structure
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* @param name: Manufacturer name
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* @param id: manufacturer ID code of device.
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*/
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struct onenand_manufacturers {
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int id;
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char *name;
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};
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int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
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struct mtd_oob_ops *ops);
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unsigned int onenand_block(struct onenand_chip *this, loff_t addr);
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int flexonenand_region(struct mtd_info *mtd, loff_t addr);
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#endif /* __LINUX_MTD_ONENAND_H */
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