/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support
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 * Copyright (c) 2012, Atmel Corporation
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/**
 * \page spare_nand_page NandSpareScheme
 * 
 * \section Purpose 
 * 
 * NandSpareScheme layer is used to do Nandflash device's spare area operations. It is called by 
 * upper layer drivers, such as \ref skip_nand_page layer. 
 * 
 * \section Usage 
 * 
 * -# NandSpareScheme_WriteBadBlockMarker() is used to mark a badblock marker inside a spare 
 *     area. 
 * -# NandSpareScheme_ReadBadBlockMarker() is used to readout the marker. 
 * -# NandSpareScheme_ReadEcc() is used to read out ecc from spare area using the provided 
 *      spare scheme. 
 * -# NandSpareScheme_WriteEcc() is used to write ecc to spare area using the provided
 *      spare scheme. 
 * -# NandSpareScheme_ReadExtra() is used to read extra bytes from spare area using the provided 
 *      spare scheme. 
 * -# NandSpareScheme_WriteExtra() is used to write extra bytes to spare area using the provided 
 *      spare scheme. 
 */

#ifndef NANDSPARESCHEME_H
#define NANDSPARESCHEME_H

/*------------------------------------------------------------------------------ */
/*         Headers                                                               */
/*------------------------------------------------------------------------------ */

#include "NandCommon.h"

/*------------------------------------------------------------------------------ */
/*         Types                                                                 */
/*------------------------------------------------------------------------------ */

struct NandSpareScheme {

    uint8_t badBlockMarkerPosition;
    uint8_t numEccBytes;
    uint8_t eccBytesPositions[NandCommon_MAXSPAREECCBYTES];
    uint8_t numExtraBytes;
    uint8_t extraBytesPositions[NandCommon_MAXSPAREEXTRABYTES];
};

/*------------------------------------------------------------------------------ */
/*         Exported variables                                                    */
/*------------------------------------------------------------------------------ */

extern const struct NandSpareScheme nandSpareScheme256;
extern const struct NandSpareScheme nandSpareScheme512;
extern const struct NandSpareScheme nandSpareScheme2048;
extern const struct NandSpareScheme nandSpareScheme4096;

/*------------------------------------------------------------------------------ */
/*         Exported functions                                                    */
/*------------------------------------------------------------------------------ */

extern void NandSpareScheme_ReadBadBlockMarker(
    const struct NandSpareScheme *scheme,
    const uint8_t *spare,
    uint8_t *marker);

extern void NandSpareScheme_WriteBadBlockMarker(
    const struct NandSpareScheme *scheme,
    uint8_t *spare,
    uint8_t marker);

extern void NandSpareScheme_ReadEcc(
    const struct NandSpareScheme *scheme,
    const uint8_t *spare,
    uint8_t *ecc);

extern void NandSpareScheme_WriteEcc(
    const struct NandSpareScheme *scheme,
    uint8_t *spare,
    const uint8_t *ecc);

extern void NandSpareScheme_ReadExtra(
    const struct NandSpareScheme *scheme,
    const uint8_t *spare,
    void *extra,
    uint8_t size,
    uint8_t offset);

extern void NandSpareScheme_WriteExtra(
    const struct NandSpareScheme *scheme,
    uint8_t *spare,
    const void *extra,
    uint8_t size,
    uint8_t offset);

extern uint8_t NandSpareScheme_build4096(
    struct NandSpareScheme *scheme,
    uint16_t spareSize,
    uint8_t eccOffset);

#endif /*#ifndef NANDSPARESCHEME_H */

