[J-u-boot.git] / fs / yaffs2 / yaffs_nandif.h

/*
 * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
 *
 * Copyright (C) 2002-2011 Aleph One Ltd.
 *   for Toby Churchill Ltd and Brightstar Engineering
 *
 * Created by Charles Manning <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 2.1 as
 * published by the Free Software Foundation.
 *
 * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
 */


#ifndef __YNANDIF_H__
#define __YNANDIF_H__

#include "yaffs_guts.h"

struct ynandif_Geometry {
	unsigned start_block;
	unsigned end_block;
	unsigned dataSize;
	unsigned spareSize;
	unsigned pagesPerBlock;
	unsigned hasECC;
	unsigned inband_tags;
	unsigned useYaffs2;

	int (*initialise)(struct yaffs_dev *dev);
	int (*deinitialise)(struct yaffs_dev *dev);

	int (*readChunk) (struct yaffs_dev *dev,
					  unsigned pageId,
					  unsigned char *data,
					  unsigned dataLength,
					  unsigned char *spare,
					  unsigned spareLength,
					  int *eccStatus);
	/* ECC status is set to 0 for OK, 1 for fixed, -1 for unfixed. */

	int (*writeChunk)(struct yaffs_dev *dev,
					  unsigned pageId,
					  const unsigned char *data,
					  unsigned dataLength,
					  const unsigned char *spare,
					  unsigned spareLength);

	int (*eraseBlock)(struct yaffs_dev *dev, unsigned blockId);

	int (*checkBlockOk)(struct yaffs_dev *dev, unsigned blockId);
	int (*markBlockBad)(struct yaffs_dev *dev, unsigned blockId);

	void *privateData;

};

struct yaffs_dev *
	yaffs_add_dev_from_geometry(const YCHAR *name,
					const struct ynandif_Geometry *geometry);


#endif
Commit	Line	Data
753ac610 CM	1	/*
	2	* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
	3	*
	4	* Copyright (C) 2002-2011 Aleph One Ltd.
	5	* for Toby Churchill Ltd and Brightstar Engineering
	6	*
	7	* Created by Charles Manning <[email protected]>
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU Lesser General Public License version 2.1 as
	11	* published by the Free Software Foundation.
	12	*
	13	* Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
	14	*/
	15
	16
	17	#ifndef __YNANDIF_H__
	18	#define __YNANDIF_H__
	19
	20	#include "yaffs_guts.h"
	21
	22	struct ynandif_Geometry {
	23	unsigned start_block;
	24	unsigned end_block;
	25	unsigned dataSize;
	26	unsigned spareSize;
	27	unsigned pagesPerBlock;
	28	unsigned hasECC;
	29	unsigned inband_tags;
	30	unsigned useYaffs2;
	31
	32	int (initialise)(struct yaffs_dev dev);
	33	int (deinitialise)(struct yaffs_dev dev);
	34
	35	int (readChunk) (struct yaffs_dev dev,
	36	unsigned pageId,
	37	unsigned char *data,
	38	unsigned dataLength,
	39	unsigned char *spare,
	40	unsigned spareLength,
	41	int *eccStatus);
	42	/* ECC status is set to 0 for OK, 1 for fixed, -1 for unfixed. */
	43
	44	int (writeChunk)(struct yaffs_dev dev,
	45	unsigned pageId,
	46	const unsigned char *data,
	47	unsigned dataLength,
	48	const unsigned char *spare,
	49	unsigned spareLength);
	50
	51	int (eraseBlock)(struct yaffs_dev dev, unsigned blockId);
	52
	53	int (checkBlockOk)(struct yaffs_dev dev, unsigned blockId);
	54	int (markBlockBad)(struct yaffs_dev dev, unsigned blockId);
	55
	56	void *privateData;
	57
	58	};
	59
	60	struct yaffs_dev *
	61	yaffs_add_dev_from_geometry(const YCHAR *name,
	62	const struct ynandif_Geometry *geometry);
	63
	64
65	#endif