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This header was renamed to rawnand.h in Linux. The following is the corresponding commit in Linux. commit d4092d76a4a4e57b65910899948a83cc8646c5a5 Author: Boris Brezillon <boris.brezillon@free-electrons.com> Date: Fri Aug 4 17:29:10 2017 +0200 mtd: nand: Rename nand.h into rawnand.h We are planning to share more code between different NAND based devices (SPI NAND, OneNAND and raw NANDs), but before doing that we need to move the existing include/linux/mtd/nand.h file into include/linux/mtd/rawnand.h so we can later create a nand.h header containing all common structure and function prototypes. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
166 lines
4.1 KiB
C
166 lines
4.1 KiB
C
/*
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* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
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*
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* Copyright (C) 2002-2007 Aleph One Ltd.
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* for Toby Churchill Ltd and Brightstar Engineering
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*
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* Created by Charles Manning <charles@aleph1.co.uk>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/* XXX U-BOOT XXX */
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#include <common.h>
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#include "yportenv.h"
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#include "yaffs_mtdif.h"
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#include <linux/mtd/mtd.h>
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#include <linux/types.h>
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#include <linux/time.h>
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#include <linux/mtd/rawnand.h>
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static inline void translate_spare2oob(const struct yaffs_spare *spare, u8 *oob)
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{
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oob[0] = spare->tb0;
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oob[1] = spare->tb1;
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oob[2] = spare->tb2;
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oob[3] = spare->tb3;
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oob[4] = spare->tb4;
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oob[5] = spare->tb5 & 0x3f;
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oob[5] |= spare->block_status == 'Y' ? 0 : 0x80;
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oob[5] |= spare->page_status == 0 ? 0 : 0x40;
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oob[6] = spare->tb6;
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oob[7] = spare->tb7;
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}
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static inline void translate_oob2spare(struct yaffs_spare *spare, u8 *oob)
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{
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struct yaffs_nand_spare *nspare = (struct yaffs_nand_spare *)spare;
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spare->tb0 = oob[0];
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spare->tb1 = oob[1];
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spare->tb2 = oob[2];
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spare->tb3 = oob[3];
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spare->tb4 = oob[4];
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spare->tb5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f;
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spare->block_status = oob[5] & 0x80 ? 0xff : 'Y';
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spare->page_status = oob[5] & 0x40 ? 0xff : 0;
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spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff;
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spare->tb6 = oob[6];
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spare->tb7 = oob[7];
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spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff;
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nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */
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}
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int nandmtd_WriteChunkToNAND(struct yaffs_dev *dev, int chunkInNAND,
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const u8 *data, const struct yaffs_spare *spare)
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{
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struct mtd_info *mtd = (struct mtd_info *)(dev->driver_context);
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struct mtd_oob_ops ops;
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size_t dummy;
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int retval = 0;
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loff_t addr = ((loff_t) chunkInNAND) * dev->data_bytes_per_chunk;
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u8 spareAsBytes[8]; /* OOB */
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if (data && !spare)
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retval = mtd_write(mtd, addr, dev->data_bytes_per_chunk,
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&dummy, data);
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else if (spare) {
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if (dev->param.use_nand_ecc) {
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translate_spare2oob(spare, spareAsBytes);
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ops.mode = MTD_OPS_AUTO_OOB;
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ops.ooblen = 8; /* temp hack */
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} else {
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ops.mode = MTD_OPS_RAW;
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ops.ooblen = YAFFS_BYTES_PER_SPARE;
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}
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ops.len = data ? dev->data_bytes_per_chunk : ops.ooblen;
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ops.datbuf = (u8 *)data;
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ops.ooboffs = 0;
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ops.oobbuf = spareAsBytes;
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retval = mtd_write_oob(mtd, addr, &ops);
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}
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if (retval == 0)
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return YAFFS_OK;
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else
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return YAFFS_FAIL;
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}
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int nandmtd_ReadChunkFromNAND(struct yaffs_dev *dev, int chunkInNAND, u8 *data,
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struct yaffs_spare *spare)
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{
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struct mtd_info *mtd = (struct mtd_info *)(dev->driver_context);
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struct mtd_oob_ops ops;
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size_t dummy;
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int retval = 0;
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loff_t addr = ((loff_t) chunkInNAND) * dev->data_bytes_per_chunk;
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u8 spareAsBytes[8]; /* OOB */
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if (data && !spare)
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retval = mtd_read(mtd, addr, dev->data_bytes_per_chunk,
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&dummy, data);
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else if (spare) {
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if (dev->param.use_nand_ecc) {
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ops.mode = MTD_OPS_AUTO_OOB;
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ops.ooblen = 8; /* temp hack */
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} else {
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ops.mode = MTD_OPS_RAW;
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ops.ooblen = YAFFS_BYTES_PER_SPARE;
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}
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ops.len = data ? dev->data_bytes_per_chunk : ops.ooblen;
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ops.datbuf = data;
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ops.ooboffs = 0;
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ops.oobbuf = spareAsBytes;
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retval = mtd_read_oob(mtd, addr, &ops);
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if (dev->param.use_nand_ecc)
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translate_oob2spare(spare, spareAsBytes);
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}
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if (retval == 0)
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return YAFFS_OK;
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else
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return YAFFS_FAIL;
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}
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int nandmtd_EraseBlockInNAND(struct yaffs_dev *dev, int blockNumber)
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{
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struct mtd_info *mtd = (struct mtd_info *)(dev->driver_context);
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__u32 addr =
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((loff_t) blockNumber) * dev->data_bytes_per_chunk
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* dev->param.chunks_per_block;
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struct erase_info ei;
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int retval = 0;
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ei.mtd = mtd;
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ei.addr = addr;
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ei.len = dev->data_bytes_per_chunk * dev->param.chunks_per_block;
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ei.time = 1000;
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ei.retries = 2;
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ei.callback = NULL;
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ei.priv = (u_long) dev;
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/* Todo finish off the ei if required */
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retval = mtd_erase(mtd, &ei);
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if (retval == 0)
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return YAFFS_OK;
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else
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return YAFFS_FAIL;
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}
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int nandmtd_InitialiseNAND(struct yaffs_dev *dev)
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{
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return YAFFS_OK;
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}
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