X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=yaffs_mtdif2.c;h=0b3c921ada0ae99ca9a56883dea4b5d3897a1f0f;hp=7985f1ed03be7f268c8486b917a5099dcd9f6555;hb=d8ff7698762028c417be5dbc102fe882be0f99c5;hpb=6f1de4473200f31d1ca1cf4672baf7afcdec2db0 diff --git a/yaffs_mtdif2.c b/yaffs_mtdif2.c index 7985f1e..0b3c921 100644 --- a/yaffs_mtdif2.c +++ b/yaffs_mtdif2.c @@ -9,13 +9,12 @@ * 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 1.16 2007-02-12 16:55:26 wookey Exp $"; + "$Id: yaffs_mtdif2.c,v 1.21 2008-07-23 03:35:12 charles Exp $"; #include "yportenv.h" @@ -28,19 +27,23 @@ const char *yaffs_mtdif2_c_version = #include "yaffs_packedtags2.h" +/* 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; @@ -48,47 +51,42 @@ int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND, (TSTR ("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); + 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 */ - - 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); - } else - BUG(); /* both tags and data should always be present */ -#else - if (tags) { yaffs_PackTags2(&pt, tags); - } + +#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); - 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 (!dev->inbandTags) { + 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); - + retval = + mtd->write(mtd, addr, dev->totalBytesPerChunk, &dummy, + data); } #endif @@ -102,11 +100,12 @@ 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; @@ -116,10 +115,21 @@ int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, (TSTR ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p" TENDSTR), chunkInNAND, data, tags)); + + if(dev->inbandTags){ + + if(!data) { + localData = 1; + data = yaffs_GetTempBuffer(dev,__LINE__); + } + + + } + #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) - if (data && !tags) - retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk, + if (dev->inbandTags || (data && !tags)) + retval = mtd->read(mtd, addr, dev->totalBytesPerChunk, &dummy, data); else if (tags) { ops.mode = MTD_OOB_AUTO; @@ -131,38 +141,43 @@ 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(localData) + yaffs_ReleaseTempBuffer(dev,data,__LINE__); if(tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR) - tags->eccResult = YAFFS_ECC_RESULT_UNFIXED; - + tags->eccResult = YAFFS_ECC_RESULT_UNFIXED; if (retval == 0) return YAFFS_OK; else @@ -189,7 +204,7 @@ 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;