/* Linux driver for Disk-On-Chip 2000       *//* (c) 1999 Machine Vision Holdings, Inc.   *//* Author: David Woodhouse <dwmw2@mvhi.com> *//* $Id: doc2000.h,v 1.15 2001/09/19 00:22:15 dwmw2 Exp $ */#ifndef __MTD_DOC2000_H__#define __MTD_DOC2000_H__struct DiskOnChip;#include <linux/mtd/nftl.h>#define DoC_Sig1 0#define DoC_Sig2 1#define DoC_ChipID		0x1000#define DoC_DOCStatus		0x1001#define DoC_DOCControl		0x1002#define DoC_FloorSelect		0x1003#define DoC_CDSNControl		0x1004#define DoC_CDSNDeviceSelect 	0x1005#define DoC_ECCConf 		0x1006#define DoC_2k_ECCStatus	0x1007#define DoC_CDSNSlowIO		0x100d#define DoC_ECCSyndrome0	0x1010#define DoC_ECCSyndrome1	0x1011#define DoC_ECCSyndrome2	0x1012#define DoC_ECCSyndrome3	0x1013#define DoC_ECCSyndrome4	0x1014#define DoC_ECCSyndrome5	0x1015#define DoC_AliasResolution 	0x101b#define DoC_ConfigInput		0x101c#define DoC_ReadPipeInit 	0x101d#define DoC_WritePipeTerm 	0x101e#define DoC_LastDataRead 	0x101f#define DoC_NOP 		0x1020#define DoC_Mil_CDSN_IO 	0x0800#define DoC_2k_CDSN_IO 		0x1800#define ReadDOC_(adr, reg)      ((volatile unsigned char)(*(volatile __u8 *)(((unsigned long)adr)+((reg)))))#define WriteDOC_(d, adr, reg)  do{ *(volatile __u8 *)(((unsigned long)adr)+((reg))) = (__u8)d; eieio();} while(0)#define DOC_IOREMAP_LEN		0x4000/* These are provided to directly use the DoC_xxx defines */#define ReadDOC(adr, reg)      ReadDOC_(adr,DoC_##reg)#define WriteDOC(d, adr, reg)  WriteDOC_(d,adr,DoC_##reg)#define DOC_MODE_RESET 		0#define DOC_MODE_NORMAL 	1#define DOC_MODE_RESERVED1 	2#define DOC_MODE_RESERVED2 	3#define DOC_MODE_MDWREN 	4#define DOC_MODE_CLR_ERR 	0x80#define DOC_ChipID_UNKNOWN 	0x00#define DOC_ChipID_Doc2k 	0x20#define DOC_ChipID_DocMil 	0x30#define CDSN_CTRL_FR_B 		0x80#define CDSN_CTRL_ECC_IO 	0x20#define CDSN_CTRL_FLASH_IO 	0x10#define CDSN_CTRL_WP 		0x08#define CDSN_CTRL_ALE 		0x04#define CDSN_CTRL_CLE 		0x02#define CDSN_CTRL_CE 		0x01#define DOC_ECC_RESET 		0#define DOC_ECC_ERROR 		0x80#define DOC_ECC_RW 		0x20#define DOC_ECC__EN 		0x08#define DOC_TOGGLE_BIT 		0x04#define DOC_ECC_RESV 		0x02#define DOC_ECC_IGNORE		0x01/* We have to also set the reserved bit 1 for enable */#define DOC_ECC_EN (DOC_ECC__EN | DOC_ECC_RESV)#define DOC_ECC_DIS (DOC_ECC_RESV)#define MAX_FLOORS 4#define MAX_CHIPS 4#define MAX_FLOORS_MIL 4#define MAX_CHIPS_MIL 1#define ADDR_COLUMN 1#define ADDR_PAGE 2#define ADDR_COLUMN_PAGE 3struct Nand {	char floor, chip;	unsigned long curadr;	unsigned char curmode;	/* Also some erase/write/pipeline info when we get that far */};struct DiskOnChip {	unsigned long physadr;	unsigned long virtadr;	unsigned long totlen;	char* name;	char ChipID; /* Type of DiskOnChip */	int ioreg;	char* chips_name;	unsigned long mfr; /* Flash IDs - only one type of flash per device */	unsigned long id;	int chipshift;	char page256;	char pageadrlen;	unsigned long erasesize;	int curfloor;	int curchip;	int numchips;	struct Nand *chips;	int nftl_found;	struct NFTLrecord nftl;};#define SECTORSIZE 512/* Return codes from doc_write(), doc_read(), and doc_erase(). */#define DOC_OK		0#define DOC_EIO		1#define DOC_EINVAL	2#define DOC_EECC	3#define DOC_ETIMEOUT	4/* * Function Prototypes */int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]);int doc_rw(struct DiskOnChip* this, int cmd, loff_t from, size_t len,	   size_t *retlen, u_char *buf);int doc_read_ecc(struct DiskOnChip* this, loff_t from, size_t len,		 size_t *retlen, u_char *buf, u_char *eccbuf);int doc_write_ecc(struct DiskOnChip* this, loff_t to, size_t len,		  size_t *retlen, const u_char *buf, u_char *eccbuf);int doc_read_oob(struct DiskOnChip* this, loff_t ofs, size_t len,		 size_t *retlen, u_char *buf);int doc_write_oob(struct DiskOnChip* this, loff_t ofs, size_t len,		  size_t *retlen, const u_char *buf);int doc_erase (struct DiskOnChip* this, loff_t ofs, size_t len);void doc_probe(unsigned long physadr);void doc_print(struct DiskOnChip*);/* * 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/* * 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;	int bus16;};#endif /* __MTD_DOC2000_H__ */