http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/mtd/onenand.h

/* * linux/include/linux/mtd/onenand.h * * Copyright (C) 2005 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/mtd/onenand_regs.h> #include <linux/mtd/bbm.h> #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); /** * onenand_state_t - chip states * Enumeration for OneNAND flash chip state */ typedef enum { FL_READY, FL_READING, FL_WRITING, FL_ERASING, FL_SYNCING, FL_UNLOCKING, FL_LOCKING, FL_PM_SUSPENDED, } onenand_state_t; /** * struct onenand_bufferram - OneNAND BufferRAM Data * @param block block address in BufferRAM * @param page page address in BufferRAM * @param valid valid flag */ struct onenand_bufferram { int block; int page; int valid; }; /** * struct onenand_chip - OneNAND Private Flash Chip Data * @param base [BOARDSPECIFIC] address to access OneNAND * @param chipsize [INTERN] the size of one chip for multichip arrays * @param device_id [INTERN] device ID * @param verstion_id [INTERN] version ID * @param options [BOARDSPECIFIC] various chip options. They can partly be set to inform onenand_scan about * @param erase_shift [INTERN] number of address bits in a block * @param page_shift [INTERN] number of address bits in a page * @param ppb_shift [INTERN] number of address bits in a pages per block * @param page_mask [INTERN] a page per block mask * @param bufferam_index [INTERN] BufferRAM index * @param bufferam [INTERN] BufferRAM info * @param readw [REPLACEABLE] hardware specific function for read short * @param writew [REPLACEABLE] hardware specific function for write short * @param command [REPLACEABLE] hardware specific function for writing commands to the chip * @param wait [REPLACEABLE] hardware specific function for wait on ready * @param read_bufferram [REPLACEABLE] hardware specific function for BufferRAM Area * @param write_bufferram [REPLACEABLE] hardware specific function for BufferRAM Area * @param read_word [REPLACEABLE] hardware specific function for read register of OneNAND * @param write_word [REPLACEABLE] hardware specific function for write register of OneNAND * @param scan_bbt [REPLACEALBE] hardware specific function for scaning Bad block Table * @param chip_lock [INTERN] spinlock used to protect access to this structure and the chip * @param wq [INTERN] wait queue to sleep on if a OneNAND operation is in progress * @param state [INTERN] the current state of the OneNAND device * @param autooob [REPLACEABLE] the default (auto)placement scheme * @param bbm [REPLACEABLE] pointer to Bad Block Management * @param priv [OPTIONAL] pointer to private chip date */ struct onenand_chip { void __iomem *base; unsigned int chipsize; unsigned int device_id; unsigned int density_mask; unsigned int options; unsigned int erase_shift; unsigned int page_shift; unsigned int ppb_shift; /* Pages per block shift */ unsigned int page_mask; 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 (*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 (*block_markbad)(struct mtd_info *mtd, loff_t ofs); int (*scan_bbt)(struct mtd_info *mtd); spinlock_t chip_lock; wait_queue_head_t wq; onenand_state_t state; unsigned char *page_buf; struct nand_oobinfo *autooob; void *bbm; void *priv; }; /* * Helper macros */ #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_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)) /* * Options bits */ #define ONENAND_CONT_LOCK (0x0001) #define ONENAND_PAGEBUF_ALLOC (0x1000) /* * OneNAND Flash Manufacturer ID Codes */ #define ONENAND_MFR_SAMSUNG 0xec /** * struct nand_manufacturers - NAND Flash Manufacturer ID Structure * @param name: Manufacturer name * @param id: manufacturer ID code of device. */ struct onenand_manufacturers { int id; char *name; }; #endif /* __LINUX_MTD_ONENAND_H */