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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
165 lines
4.1 KiB
C
165 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.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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