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/*
* inftl.h -- defines to support the Inverse NAND Flash Translation Layer
*
* (C) Copyright 2002, Greg Ungerer (gerg@snapgear.com)
*
* $Id: inftl.h,v 1.1 2004-01-28 15:30:49 giacomo Exp $
*/
#ifndef __MTD_INFTL_H__
#define __MTD_INFTL_H__
#include <linux/mtd/blktrans.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nftl.h>
#define OSAK_VERSION 0x5120
#define PERCENTUSED 98
#define SECTORSIZE 512
#ifndef INFTL_MAJOR
#define INFTL_MAJOR 93 /* FIXME */
#endif
#define INFTL_PARTN_BITS 4
/* Block Control Information */
struct inftl_bci {
__u8 ECCsig[6];
__u8 Status;
__u8 Status1;
} __attribute__((packed));
struct inftl_unithead1 {
__u16 virtualUnitNo;
__u16 prevUnitNo;
__u8 ANAC;
__u8 NACs;
__u8 parityPerField;
__u8 discarded;
} __attribute__((packed));
struct inftl_unithead2 {
__u8 parityPerField;
__u8 ANAC;
__u16 prevUnitNo;
__u16 virtualUnitNo;
__u8 NACs;
__u8 discarded;
} __attribute__((packed));
struct inftl_unittail {
__u8 Reserved[4];
__u16 EraseMark;
__u16 EraseMark1;
} __attribute__((packed));
union inftl_uci {
struct inftl_unithead1 a;
struct inftl_unithead2 b;
struct inftl_unittail c;
};
struct inftl_oob {
struct inftl_bci b;
union inftl_uci u;
};
/* INFTL Media Header */
struct INFTLPartition {
__u32 virtualUnits;
__u32 firstUnit;
__u32 lastUnit;
__u32 flags;
__u32 spareUnits;
__u32 Reserved0;
__u32 Reserved1;
} __attribute__((packed));
struct INFTLMediaHeader {
char bootRecordID[8];
__u32 NoOfBootImageBlocks;
__u32 NoOfBinaryPartitions;
__u32 NoOfBDTLPartitions;
__u32 BlockMultiplierBits;
__u32 FormatFlags;
__u32 OsakVersion;
__u32 PercentUsed;
struct INFTLPartition Partitions[4];
} __attribute__((packed));
/* Partition flag types */
#define INFTL_BINARY 0x20000000
#define INFTL_BDTL 0x40000000
#define INFTL_LAST 0x80000000
#ifdef __KERNEL__
struct INFTLrecord {
struct mtd_blktrans_dev mbd;
__u16 MediaUnit, SpareMediaUnit;
__u32 EraseSize;
struct INFTLMediaHeader MediaHdr;
int usecount;
unsigned char heads;
unsigned char sectors;
unsigned short cylinders;
__u16 numvunits;
__u16 firstEUN;
__u16 lastEUN;
__u16 numfreeEUNs;
__u16 LastFreeEUN; /* To speed up finding a free EUN */
int head,sect,cyl;
__u16 *PUtable; /* Physical Unit Table */
__u16 *VUtable; /* Virtual Unit Table */
unsigned int nb_blocks; /* number of physical blocks */
unsigned int nb_boot_blocks; /* number of blocks used by the bios */
struct erase_info instr;
};
int INFTL_mount(struct INFTLrecord *s);
int INFTL_formatblock(struct INFTLrecord *s, int block);
#endif /* __KERNEL__ */
#endif /* __MTD_INFTL_H__ */