u-boot/include/linux/mtd/doc2000.h
Marian Balakowicz 2fc000d756 Remove dependencies between DoC code and old legacy NAND driver.
Necessary defines and data structures were copied to DoC specific files
so that legacy NAND code could be entirely removed from u-boot tree
in the near future.
2006-04-05 20:46:41 +02:00

216 lines
5.5 KiB
C

/* 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 3
struct 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__ */