/* * vivi/include/nand.h: * * Based on linux/include/linux/mtd/nand.h * * $Id: nand.h,v 1.1 2002/08/08 11:48:42 nandy Exp $ * * 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. * *  Info: *   Contains standard defines and IDs for NAND flash devices * *  Changelog: *   01-31-2000 DMW     Created *   09-18-2000 SJH     Moved structure out of the Disk-On-Chip drivers *			so it can be used by other NAND flash device *			drivers. I also changed the copyright since none *			of the original contents of this file are specific *			to DoC devices. David can whack me with a baseball *			bat later if I did something naughty. *   10-11-2000 SJH     Added private NAND flash structure for driver *   10-24-2000 SJH     Added prototype for 'nand_scan' function *   10-29-2001 TG	changed nand_chip structure to support  *			hardwarespecific function for accessing control lines *   02-21-2002 TG	added support for different read/write adress and *			ready/busy line access function *   02-26-2002 TG	added chip_delay to nand_chip structure to optimize *			command delay times for different chips */#ifndef __VIVI_MTD_NAND_H#define __VIVI_MTD_NAND_H#include "config.h"/* * Searches for a NAND device */extern int nand_scan (struct mtd_info *mtd);extern int smc_scan (struct mtd_info *mtd);/* * Constants for hardware specific CLE/ALE/NCE function*/#define NAND_CTL_SETNCE 	1#define NAND_CTL_CLRNCE		2#define NAND_CTL_SETCLE		3#define NAND_CTL_CLRCLE		4#define NAND_CTL_SETALE		5#define NAND_CTL_CLRALE		6#define NAND_CTL_DAT_IN         7#define NAND_CTL_DAT_OUT        8#define SMC_OOB_USER           0#define SMC_OOB_DAT_FLAG       4#define SMC_OOB_BLK_FLAG       5#define SMC_OOB_ADDR1          6#define SMC_OOB_ECC2           8#define SMC_OOB_ADDR2          11#define SMC_OOB_ECC1           13#define SMC_OOB_SIZE           16#define SMC_STAT_WRITE_ERR     0x01    /* 1: Error in Program/Erase */#define SMC_STAT_READY         0x40    /* 0: Busy, 1: Ready */#define SMC_STAT_NOT_WP        0x80    /* 0: Protected, 1: Not */#define SMC_OOB256_SIZE        8#define SMC_OOB256_ECC1        (SMC_OOB_ECC1 - SMC_OOB256_SIZE)#define SMC_OOB256_ECC2        (SMC_OOB_ECC2 - SMC_OOB256_SIZE)struct nand_smc_dev {	unsigned long CpV;      /* Cylinder/Volume */	unsigned long HpC;      /* Head/Cylinder */	unsigned long SpH;      /* Sector/Head */	unsigned long allS;     /* Number of Sectors */	unsigned long szS;      /* Sector Size */	unsigned long PBpV;     /* Number of Physical Blocks in Volume */	unsigned long LBpV;     /* Number of Logical Blocks in Volume */	unsigned long SpB;      /* Sector/Block */	unsigned long PpB;      /* Page/Block */	unsigned long szP;      /* Page Size */};/* * Standard NAND flash commands */#define NAND_CMD_READ0		0#define NAND_CMD_READ1		1#define NAND_CMD_PAGEPROG	0x10#define NAND_CMD_READOOB	0x50#define NAND_CMD_ERASE1		0x60#define NAND_CMD_STATUS		0x70#define NAND_CMD_SEQIN		0x80#define NAND_CMD_READID		0x90#define NAND_CMD_ERASE2		0xd0#define NAND_CMD_RESET		0xff/* * Below status is not used in the vivi. */#if 0	/* * Enumeration for NAND flash chip state */typedef enum {	FL_READY,	FL_READING,	FL_WRITING,	FL_ERASING,	FL_SYNCING} nand_state_t;#endif/* * NAND Private Flash Chip Data * * Structure overview: * *  IO_ADDR_R - address to read the 8 I/O lines of the flash device  * *  IO_ADDR_W - address to write the 8 I/O lines of the flash device  * *  hwcontrol - hardwarespecific function for accesing control-lines * *  dev_ready - hardwarespecific function for accesing device ready/busy line * *  chip_lock - spinlock used to protect access to this structure * *  wq - wait queue to sleep on if a NAND operation is in progress * *  state - give the current state of the NAND device * *  page_shift - number of address bits in a page (column address bits) * *  data_buf - data buffer passed to/from MTD user modules * *  data_cache - data cache for redundant page access and shadow for *		 ECC failure * *  ecc_code_buf - used only for holding calculated or read ECCs for *                 a page read or written when ECC is in use * *  reserved - padding to make structure fall on word boundary if *             when ECC is in use */struct nand_chip {#ifdef CONFIG_MTD_NANDY	void (*hwcontrol)(int cmd);	void (*write_cmd)(u_char val);	void (*write_addr)(u_char val);	u_char (*read_data)(void);	void (*write_data)(u_char val);	void (*wait_for_ready)(void);	/*spinlock_t chip_lock;*/	/*wait_queue_head_t wq;*/	/*nand_state_t state;*/	int page_shift;	u_char *data_buf;	u_char *data_cache;	int	cache_page;	struct nand_smc_dev *dev;	u_char spare[SMC_OOB_SIZE];#else	/* CONFIG_MTD_NANDY */	unsigned long IO_ADDR_R;	unsigned long IO_ADDR_W;	void (*hwcontrol)(int cmd);	int (*dev_ready)(void);	int chip_delay;	/*spinlock_t chip_lock;*/	/*wait_queue_head_t wq;*/	/*nand_state_t state;*/	int page_shift;	u_char *data_buf;	u_char *data_cache;	int	cache_page;#ifdef CONFIG_MTD_NAND_ECC	u_char ecc_code_buf[6];	u_char reserved[2];#endif#endif	/* CONFIG_MTD_NANDY */};/* * NAND Flash Manufacturer ID Codes */#define NAND_MFR_TOSHIBA	0x98#define NAND_MFR_SAMSUNG	0xec/* * NAND Flash Device ID Structure * * Structure overview: * *  name - Complete name of device * *  manufacture_id - manufacturer ID code of device. * *  model_id - model ID code of device. * *  chipshift - total number of address bits for the device which *              is used to calculate address offsets and the total *              number of bytes the device is capable of. * *  page256 - denotes if flash device has 256 byte pages or not. * *  pageadrlen - number of bytes minus one needed to hold the *               complete address into the flash array. Keep in *               mind that when a read or write is done to a *               specific address, the address is input serially *               8 bits at a time. This structure member is used *               by the read/write routines as a loop index for *               shifting the address out 8 bits at a time. * *  erasesize - size of an erase block in the flash device. */struct nand_flash_dev {	char * name;	int manufacture_id;	int model_id;	int chipshift;	char page256;	char pageadrlen;	unsigned long erasesize;};#endif /* __VIVI_MTD_NAND_H */