diff options
author | Gabor Juhos <juhosg@openwrt.org> | 2012-10-30 14:58:13 +0000 |
---|---|---|
committer | Gabor Juhos <juhosg@openwrt.org> | 2012-10-30 14:58:13 +0000 |
commit | 029a10f4cb5ae60cd0a649d750182ec8b7bbb84f (patch) | |
tree | 0a4bed19ae252dbcaf22aa2e7b188a9126cca9d2 /target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c | |
parent | 1369cbd8deead254ffe388d9ec835b358d9c3f01 (diff) | |
download | upstream-029a10f4cb5ae60cd0a649d750182ec8b7bbb84f.tar.gz upstream-029a10f4cb5ae60cd0a649d750182ec8b7bbb84f.tar.bz2 upstream-029a10f4cb5ae60cd0a649d750182ec8b7bbb84f.zip |
generic: fold yaffs_cvs_2009_04_24 patch to generic/files
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34012 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c')
-rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c | 148 |
1 files changed, 81 insertions, 67 deletions
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c index cdad0734bf..77504babb7 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c @@ -14,7 +14,7 @@ /* mtd interface for YAFFS2 */ const char *yaffs_mtdif2_c_version = - "$Id: yaffs_mtdif2.c,v 1.17 2007-02-14 01:09:06 wookey Exp $"; + "$Id: yaffs_mtdif2.c,v 1.23 2009-03-06 17:20:53 wookey Exp $"; #include "yportenv.h" @@ -27,19 +27,23 @@ const char *yaffs_mtdif2_c_version = #include "yaffs_packedtags2.h" -int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND, - const __u8 * data, - const yaffs_ExtendedTags * tags) +/* NB For use with inband tags.... + * We assume that the data buffer is of size totalBytersPerChunk so that we can also + * use it to load the tags. + */ +int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, + const __u8 *data, + const yaffs_ExtendedTags *tags) { struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) struct mtd_oob_ops ops; #else size_t dummy; #endif int retval = 0; - loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; + loff_t addr; yaffs_PackedTags2 pt; @@ -48,46 +52,40 @@ int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND, ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p" TENDSTR), chunkInNAND, data, tags)); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) - if (tags) - yaffs_PackTags2(&pt, tags); - else - BUG(); /* both tags and data should always be present */ - if (data) { - ops.mode = MTD_OOB_AUTO; - ops.ooblen = sizeof(pt); - ops.len = dev->nDataBytesPerChunk; - ops.ooboffs = 0; - ops.datbuf = (__u8 *)data; - ops.oobbuf = (void *)&pt; - retval = mtd->write_oob(mtd, addr, &ops); + addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk; + + /* For yaffs2 writing there must be both data and tags. + * If we're using inband tags, then the tags are stuffed into + * the end of the data buffer. + */ + if (!data || !tags) + BUG(); + else if (dev->inbandTags) { + yaffs_PackedTags2TagsPart *pt2tp; + pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->nDataBytesPerChunk); + yaffs_PackTags2TagsPart(pt2tp, tags); } else - BUG(); /* both tags and data should always be present */ -#else - if (tags) { yaffs_PackTags2(&pt, tags); - } - if (data && tags) { - if (dev->useNANDECC) - retval = - mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, - &dummy, data, (__u8 *) & pt, NULL); - else - retval = - mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, - &dummy, data, (__u8 *) & pt, NULL); - } else { - if (data) - retval = - mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy, - data); - if (tags) - retval = - mtd->write_oob(mtd, addr, mtd->oobsize, &dummy, - (__u8 *) & pt); +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) + ops.mode = MTD_OOB_AUTO; + ops.ooblen = (dev->inbandTags) ? 0 : sizeof(pt); + ops.len = dev->totalBytesPerChunk; + ops.ooboffs = 0; + ops.datbuf = (__u8 *)data; + ops.oobbuf = (dev->inbandTags) ? NULL : (void *)&pt; + retval = mtd->write_oob(mtd, addr, &ops); +#else + if (!dev->inbandTags) { + retval = + mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, + &dummy, data, (__u8 *) &pt, NULL); + } else { + retval = + mtd->write(mtd, addr, dev->totalBytesPerChunk, &dummy, + data); } #endif @@ -97,17 +95,18 @@ int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND, return YAFFS_FAIL; } -int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, - __u8 * data, yaffs_ExtendedTags * tags) +int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, + __u8 *data, yaffs_ExtendedTags *tags) { struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) struct mtd_oob_ops ops; #endif size_t dummy; int retval = 0; + int localData = 0; - loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; + loff_t addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk; yaffs_PackedTags2 pt; @@ -116,9 +115,20 @@ int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p" TENDSTR), chunkInNAND, data, tags)); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) - if (data && !tags) - retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk, + if (dev->inbandTags) { + + if (!data) { + localData = 1; + data = yaffs_GetTempBuffer(dev, __LINE__); + } + + + } + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) + if (dev->inbandTags || (data && !tags)) + retval = mtd->read(mtd, addr, dev->totalBytesPerChunk, &dummy, data); else if (tags) { ops.mode = MTD_OOB_AUTO; @@ -130,38 +140,42 @@ int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, retval = mtd->read_oob(mtd, addr, &ops); } #else - if (data && tags) { - if (dev->useNANDECC) { - retval = - mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, - &dummy, data, dev->spareBuffer, - NULL); - } else { - retval = - mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, + if (!dev->inbandTags && data && tags) { + + retval = mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, &dummy, data, dev->spareBuffer, NULL); - } } else { if (data) retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, data); - if (tags) + if (!dev->inbandTags && tags) retval = mtd->read_oob(mtd, addr, mtd->oobsize, &dummy, dev->spareBuffer); } #endif - memcpy(&pt, dev->spareBuffer, sizeof(pt)); - if (tags) - yaffs_UnpackTags2(tags, &pt); + if (dev->inbandTags) { + if (tags) { + yaffs_PackedTags2TagsPart *pt2tp; + pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->nDataBytesPerChunk]; + yaffs_UnpackTags2TagsPart(tags, pt2tp); + } + } else { + if (tags) { + memcpy(&pt, dev->spareBuffer, sizeof(pt)); + yaffs_UnpackTags2(tags, &pt); + } + } - if(tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR) - tags->eccResult = YAFFS_ECC_RESULT_UNFIXED; + if (localData) + yaffs_ReleaseTempBuffer(dev, data, __LINE__); + if (tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR) + tags->eccResult = YAFFS_ECC_RESULT_UNFIXED; if (retval == 0) return YAFFS_OK; else @@ -178,7 +192,7 @@ int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) retval = mtd->block_markbad(mtd, blockNo * dev->nChunksPerBlock * - dev->nDataBytesPerChunk); + dev->totalBytesPerChunk); if (retval == 0) return YAFFS_OK; @@ -188,7 +202,7 @@ int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) } int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, - yaffs_BlockState * state, int *sequenceNumber) + yaffs_BlockState *state, __u32 *sequenceNumber) { struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); int retval; @@ -198,7 +212,7 @@ int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, retval = mtd->block_isbad(mtd, blockNo * dev->nChunksPerBlock * - dev->nDataBytesPerChunk); + dev->totalBytesPerChunk); if (retval) { T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR))); |