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2fc000d756
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.
217 lines
5.5 KiB
C
217 lines
5.5 KiB
C
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/* Linux driver for Disk-On-Chip 2000 */
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/* (c) 1999 Machine Vision Holdings, Inc. */
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/* Author: David Woodhouse <dwmw2@mvhi.com> */
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/* $Id: doc2000.h,v 1.15 2001/09/19 00:22:15 dwmw2 Exp $ */
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#ifndef __MTD_DOC2000_H__
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#define __MTD_DOC2000_H__
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struct DiskOnChip;
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#include <linux/mtd/nftl.h>
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#define DoC_Sig1 0
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#define DoC_Sig2 1
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#define DoC_ChipID 0x1000
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#define DoC_DOCStatus 0x1001
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#define DoC_DOCControl 0x1002
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#define DoC_FloorSelect 0x1003
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#define DoC_CDSNControl 0x1004
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#define DoC_CDSNDeviceSelect 0x1005
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#define DoC_ECCConf 0x1006
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#define DoC_2k_ECCStatus 0x1007
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#define DoC_CDSNSlowIO 0x100d
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#define DoC_ECCSyndrome0 0x1010
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#define DoC_ECCSyndrome1 0x1011
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#define DoC_ECCSyndrome2 0x1012
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#define DoC_ECCSyndrome3 0x1013
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#define DoC_ECCSyndrome4 0x1014
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#define DoC_ECCSyndrome5 0x1015
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#define DoC_AliasResolution 0x101b
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#define DoC_ConfigInput 0x101c
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#define DoC_ReadPipeInit 0x101d
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#define DoC_WritePipeTerm 0x101e
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#define DoC_LastDataRead 0x101f
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#define DoC_NOP 0x1020
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#define DoC_Mil_CDSN_IO 0x0800
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#define DoC_2k_CDSN_IO 0x1800
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#define ReadDOC_(adr, reg) ((volatile unsigned char)(*(volatile __u8 *)(((unsigned long)adr)+((reg)))))
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#define WriteDOC_(d, adr, reg) do{ *(volatile __u8 *)(((unsigned long)adr)+((reg))) = (__u8)d; eieio();} while(0)
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#define DOC_IOREMAP_LEN 0x4000
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/* These are provided to directly use the DoC_xxx defines */
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#define ReadDOC(adr, reg) ReadDOC_(adr,DoC_##reg)
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#define WriteDOC(d, adr, reg) WriteDOC_(d,adr,DoC_##reg)
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#define DOC_MODE_RESET 0
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#define DOC_MODE_NORMAL 1
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#define DOC_MODE_RESERVED1 2
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#define DOC_MODE_RESERVED2 3
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#define DOC_MODE_MDWREN 4
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#define DOC_MODE_CLR_ERR 0x80
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#define DOC_ChipID_UNKNOWN 0x00
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#define DOC_ChipID_Doc2k 0x20
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#define DOC_ChipID_DocMil 0x30
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#define CDSN_CTRL_FR_B 0x80
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#define CDSN_CTRL_ECC_IO 0x20
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#define CDSN_CTRL_FLASH_IO 0x10
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#define CDSN_CTRL_WP 0x08
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#define CDSN_CTRL_ALE 0x04
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#define CDSN_CTRL_CLE 0x02
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#define CDSN_CTRL_CE 0x01
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#define DOC_ECC_RESET 0
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#define DOC_ECC_ERROR 0x80
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#define DOC_ECC_RW 0x20
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#define DOC_ECC__EN 0x08
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#define DOC_TOGGLE_BIT 0x04
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#define DOC_ECC_RESV 0x02
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#define DOC_ECC_IGNORE 0x01
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/* We have to also set the reserved bit 1 for enable */
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#define DOC_ECC_EN (DOC_ECC__EN | DOC_ECC_RESV)
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#define DOC_ECC_DIS (DOC_ECC_RESV)
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#define MAX_FLOORS 4
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#define MAX_CHIPS 4
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#define MAX_FLOORS_MIL 4
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#define MAX_CHIPS_MIL 1
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#define ADDR_COLUMN 1
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#define ADDR_PAGE 2
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#define ADDR_COLUMN_PAGE 3
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struct Nand {
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char floor, chip;
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unsigned long curadr;
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unsigned char curmode;
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/* Also some erase/write/pipeline info when we get that far */
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};
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struct DiskOnChip {
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unsigned long physadr;
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unsigned long virtadr;
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unsigned long totlen;
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char* name;
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char ChipID; /* Type of DiskOnChip */
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int ioreg;
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char* chips_name;
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unsigned long mfr; /* Flash IDs - only one type of flash per device */
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unsigned long id;
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int chipshift;
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char page256;
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char pageadrlen;
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unsigned long erasesize;
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int curfloor;
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int curchip;
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int numchips;
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struct Nand *chips;
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int nftl_found;
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struct NFTLrecord nftl;
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};
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#define SECTORSIZE 512
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/* Return codes from doc_write(), doc_read(), and doc_erase().
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*/
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#define DOC_OK 0
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#define DOC_EIO 1
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#define DOC_EINVAL 2
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#define DOC_EECC 3
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#define DOC_ETIMEOUT 4
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/*
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* Function Prototypes
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*/
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int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]);
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int doc_rw(struct DiskOnChip* this, int cmd, loff_t from, size_t len,
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size_t *retlen, u_char *buf);
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int doc_read_ecc(struct DiskOnChip* this, loff_t from, size_t len,
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size_t *retlen, u_char *buf, u_char *eccbuf);
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int doc_write_ecc(struct DiskOnChip* this, loff_t to, size_t len,
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size_t *retlen, const u_char *buf, u_char *eccbuf);
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int doc_read_oob(struct DiskOnChip* this, loff_t ofs, size_t len,
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size_t *retlen, u_char *buf);
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int doc_write_oob(struct DiskOnChip* this, loff_t ofs, size_t len,
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size_t *retlen, const u_char *buf);
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int doc_erase (struct DiskOnChip* this, loff_t ofs, size_t len);
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void doc_probe(unsigned long physadr);
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void doc_print(struct DiskOnChip*);
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/*
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* Standard NAND flash commands
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*/
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#define NAND_CMD_READ0 0
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#define NAND_CMD_READ1 1
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#define NAND_CMD_PAGEPROG 0x10
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#define NAND_CMD_READOOB 0x50
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#define NAND_CMD_ERASE1 0x60
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#define NAND_CMD_STATUS 0x70
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#define NAND_CMD_SEQIN 0x80
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#define NAND_CMD_READID 0x90
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#define NAND_CMD_ERASE2 0xd0
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#define NAND_CMD_RESET 0xff
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/*
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* NAND Flash Manufacturer ID Codes
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*/
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#define NAND_MFR_TOSHIBA 0x98
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#define NAND_MFR_SAMSUNG 0xec
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/*
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* NAND Flash Device ID Structure
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*
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* Structure overview:
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*
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* name - Complete name of device
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*
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* manufacture_id - manufacturer ID code of device.
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*
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* model_id - model ID code of device.
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*
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* chipshift - total number of address bits for the device which
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* is used to calculate address offsets and the total
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* number of bytes the device is capable of.
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*
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* page256 - denotes if flash device has 256 byte pages or not.
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*
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* pageadrlen - number of bytes minus one needed to hold the
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* complete address into the flash array. Keep in
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* mind that when a read or write is done to a
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* specific address, the address is input serially
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* 8 bits at a time. This structure member is used
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* by the read/write routines as a loop index for
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* shifting the address out 8 bits at a time.
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*
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* erasesize - size of an erase block in the flash device.
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*/
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struct nand_flash_dev {
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char * name;
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int manufacture_id;
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int model_id;
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int chipshift;
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char page256;
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char pageadrlen;
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unsigned long erasesize;
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int bus16;
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};
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#endif /* __MTD_DOC2000_H__ */
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