diff options
Diffstat (limited to 'fs/yaffs2/patches/yaffs_mtdif2.c')
| -rw-r--r-- | fs/yaffs2/patches/yaffs_mtdif2.c | 258 |
1 files changed, 0 insertions, 258 deletions
diff --git a/fs/yaffs2/patches/yaffs_mtdif2.c b/fs/yaffs2/patches/yaffs_mtdif2.c deleted file mode 100644 index df5753b..0000000 --- a/fs/yaffs2/patches/yaffs_mtdif2.c +++ /dev/null @@ -1,258 +0,0 @@ -/* - * YAFFS: Yet another FFS. A NAND-flash specific file system. - * - * Copyright (C) 2002 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -/* mtd interface for YAFFS2 */ - -const char *yaffs_mtdif2_c_version = - "$Id: yaffs_mtdif2.c,v 1.2 2007/03/07 08:05:58 colin Exp $"; - -#include "yportenv.h" - - -#include "yaffs_mtdif2.h" - -#include "linux/mtd/mtd.h" -#include "linux/types.h" -#include "linux/time.h" - -#include "yaffs_packedtags2.h" - - -void nandmtd2_pt2buf(yaffs_Device *dev, yaffs_PackedTags2 *pt, int is_raw) -{ - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); - __u8 *ptab = (__u8 *)pt; /* packed tags as bytes */ - - int i, j = 0, k, n; - - /* Pack buffer with 0xff */ - for (i = 0; i < mtd->oobsize; i++) - dev->spareBuffer[i] = 0xff; - - if(!is_raw){ - memcpy(dev->spareBuffer,pt,sizeof(yaffs_PackedTags2)); - } else { - j = 0; - k = mtd->oobinfo.oobfree[j][0]; - n = mtd->oobinfo.oobfree[j][1]; - - if (n == 0) { - T(YAFFS_TRACE_ERROR, (TSTR("No OOB space for tags" TENDSTR))); - YBUG(); - } - - for (i = 0; i < sizeof(yaffs_PackedTags2); i++) { - if (n == 0) { - j++; - k = mtd->oobinfo.oobfree[j][0]; - n = mtd->oobinfo.oobfree[j][1]; - if (n == 0) { - T(YAFFS_TRACE_ERROR, (TSTR("No OOB space for tags" TENDSTR))); - YBUG(); - } - } - dev->spareBuffer[k] = ptab[i]; - k++; - n--; - } - } - -} - -void nandmtd2_buf2pt(yaffs_Device *dev, yaffs_PackedTags2 *pt, int is_raw) -{ - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); - int i, j = 0, k, n; - __u8 *ptab = (__u8 *)pt; /* packed tags as bytes */ - - - if (!is_raw) { - - memcpy(pt,dev->spareBuffer,sizeof(yaffs_PackedTags2)); - } else { - j = 0; - k = mtd->oobinfo.oobfree[j][0]; - n = mtd->oobinfo.oobfree[j][1]; - - if (n == 0) { - T(YAFFS_TRACE_ERROR, (TSTR("No space in OOB for tags" TENDSTR))); - YBUG(); - } - - for (i = 0; i < sizeof(yaffs_PackedTags2); i++) { - if (n == 0) { - j++; - k = mtd->oobinfo.oobfree[j][0]; - n = mtd->oobinfo.oobfree[j][1]; - if (n == 0) { - T(YAFFS_TRACE_ERROR, (TSTR("No space in OOB for tags" TENDSTR))); - YBUG(); - } - } - ptab[i] = dev->spareBuffer[k]; - k++; - n--; - } - } - -} - -int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND, - const __u8 * data, - const yaffs_ExtendedTags * tags) -{ - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); - size_t dummy; - int retval = 0; - - loff_t addr = ((loff_t) chunkInNAND) * dev->nBytesPerChunk; - - yaffs_PackedTags2 pt; - - T(YAFFS_TRACE_MTD, - (TSTR - ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p" - TENDSTR), chunkInNAND, data, tags)); - - if (tags) { - yaffs_PackTags2(&pt, tags); - } - - if (data && tags) { - nandmtd2_pt2buf(dev, &pt, 0); - retval = - mtd->write_ecc(mtd, addr, dev->nBytesPerChunk, - &dummy, data, dev->spareBuffer, - NULL); - - } else { - - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("Write chunk with null tags or data!" TENDSTR))); - YBUG(); - } - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; -} - -int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, - __u8 * data, yaffs_ExtendedTags * tags) -{ - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); - size_t dummy; - int retval = 0; - - loff_t addr = ((loff_t) chunkInNAND) * dev->nBytesPerChunk; - - yaffs_PackedTags2 pt; - - T(YAFFS_TRACE_MTD, - (TSTR - ("nandmtd2_ReadChunkWithTagsToNAND chunk %d data %p tags %p" - TENDSTR), chunkInNAND, data, tags)); - - if (0 && data && tags) { - retval = - mtd->read_ecc(mtd, addr, dev->nBytesPerChunk, - &dummy, data, dev->spareBuffer, - NULL); - nandmtd2_buf2pt(dev, &pt, 0); - } else { - if (data) - retval = - mtd->read(mtd, addr, dev->nBytesPerChunk, &dummy, - data); - if (tags) { - retval = - mtd->read_oob(mtd, addr, mtd->oobsize, &dummy, - dev->spareBuffer); - nandmtd2_buf2pt(dev, &pt, 1); - } - } - - if (tags) - yaffs_UnpackTags2(tags, &pt); - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; -} - -int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) -{ - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); - int retval; - T(YAFFS_TRACE_MTD, - (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), blockNo)); - - retval = - mtd->block_markbad(mtd, - blockNo * dev->nChunksPerBlock * - dev->nBytesPerChunk); - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; - -} - -int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, - yaffs_BlockState * state, int *sequenceNumber) -{ - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); - int retval; - - T(YAFFS_TRACE_MTD, - (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), blockNo)); - retval = - mtd->block_isbad(mtd, - blockNo * dev->nChunksPerBlock * - dev->nBytesPerChunk); - - if (retval) { - T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR))); - - *state = YAFFS_BLOCK_STATE_DEAD; - *sequenceNumber = 0; - } else { - yaffs_ExtendedTags t; - nandmtd2_ReadChunkWithTagsFromNAND(dev, - blockNo * - dev->nChunksPerBlock, NULL, - &t); - - if (t.chunkUsed) { - *sequenceNumber = t.sequenceNumber; - *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; - } else { - *sequenceNumber = 0; - *state = YAFFS_BLOCK_STATE_EMPTY; - } - - T(YAFFS_TRACE_MTD, - (TSTR("block is OK seq %d state %d" TENDSTR), *sequenceNumber, - *state)); - } - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; -} - |