/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
/* mtd interface for YAFFS2 */
-const char *yaffs_mtdif2_c_version =
- "$Id: yaffs_mtdif2.c,v 1.18 2007-12-12 18:08:15 colin Exp $";
-
#include "yportenv.h"
-
+#include "yaffs_trace.h"
#include "yaffs_mtdif2.h"
#include "yaffs_packedtags2.h"
-int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
- const __u8 * data,
- const yaffs_ExtendedTags * tags)
+#include "yaffs_linux.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_dev_t *dev, int nand_chunk,
+ const __u8 *data,
+ const yaffs_ext_tags *tags)
{
- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
-#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+#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;
+ int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt);
+ void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t : (void *)&pt;
+
T(YAFFS_TRACE_MTD,
(TSTR
("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p"
- TENDSTR), chunkInNAND, data, tags));
+ TENDSTR), nand_chunk, data, tags));
-#if (MTD_VERSION_CODE > MTD_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) nand_chunk) * dev->param.total_bytes_per_chunk;
+
+ /* 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->param.inband_tags) {
+ yaffs_PackedTags2TagsPart *pt2tp;
+ pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->data_bytes_per_chunk);
+ yaffs_PackTags2TagsPart(pt2tp, tags);
} else
- BUG(); /* both tags and data should always be present */
-#else
- if (tags) {
- yaffs_PackTags2(&pt, tags);
- }
+ yaffs_PackTags2(&pt, tags, !dev->param.no_tags_ecc);
- 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->param.inband_tags) ? 0 : packed_tags_size;
+ ops.len = dev->param.total_bytes_per_chunk;
+ ops.ooboffs = 0;
+ ops.datbuf = (__u8 *)data;
+ ops.oobbuf = (dev->param.inband_tags) ? NULL : packed_tags_ptr;
+ retval = mtd->write_oob(mtd, addr, &ops);
+#else
+ if (!dev->param.inband_tags) {
+ retval =
+ mtd->write_ecc(mtd, addr, dev->data_bytes_per_chunk,
+ &dummy, data, (__u8 *) packed_tags_ptr, NULL);
+ } else {
+ retval =
+ mtd->write(mtd, addr, dev->param.total_bytes_per_chunk, &dummy,
+ data);
}
#endif
return YAFFS_FAIL;
}
-int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
- __u8 * data, yaffs_ExtendedTags * tags)
+int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk,
+ __u8 *data, yaffs_ext_tags *tags)
{
- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
-#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+#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) nand_chunk) * dev->param.total_bytes_per_chunk;
yaffs_PackedTags2 pt;
+ int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt);
+ void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t: (void *)&pt;
+
T(YAFFS_TRACE_MTD,
(TSTR
("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p"
- TENDSTR), chunkInNAND, data, tags));
+ TENDSTR), nand_chunk, data, tags));
+
+ if (dev->param.inband_tags) {
-#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
- if (data && !tags)
- retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk,
+ if (!data) {
+ localData = 1;
+ data = yaffs_get_temp_buffer(dev, __LINE__);
+ }
+
+
+ }
+
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ if (dev->param.inband_tags || (data && !tags))
+ retval = mtd->read(mtd, addr, dev->param.total_bytes_per_chunk,
&dummy, data);
else if (tags) {
ops.mode = MTD_OOB_AUTO;
- ops.ooblen = sizeof(pt);
- ops.len = data ? dev->nDataBytesPerChunk : sizeof(pt);
+ ops.ooblen = packed_tags_size;
+ ops.len = data ? dev->data_bytes_per_chunk : packed_tags_size;
ops.ooboffs = 0;
ops.datbuf = data;
- ops.oobbuf = dev->spareBuffer;
+ ops.oobbuf = yaffs_dev_to_lc(dev)->spareBuffer;
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->param.inband_tags && data && tags) {
+
+ retval = mtd->read_ecc(mtd, addr, dev->data_bytes_per_chunk,
&dummy, data, dev->spareBuffer,
NULL);
- }
} else {
if (data)
retval =
- mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy,
+ mtd->read(mtd, addr, dev->data_bytes_per_chunk, &dummy,
data);
- if (tags)
+ if (!dev->param.inband_tags && 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(tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR)
- tags->eccResult = YAFFS_ECC_RESULT_UNFIXED;
+ if (dev->param.inband_tags) {
+ if (tags) {
+ yaffs_PackedTags2TagsPart *pt2tp;
+ pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->data_bytes_per_chunk];
+ yaffs_unpack_tags2tags_part(tags, pt2tp);
+ }
+ } else {
+ if (tags) {
+ memcpy(packed_tags_ptr, yaffs_dev_to_lc(dev)->spareBuffer, packed_tags_size);
+ yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc);
+ }
+ }
+
+ if (localData)
+ yaffs_release_temp_buffer(dev, data, __LINE__);
+ if (tags && retval == -EBADMSG && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) {
+ tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED;
+ dev->n_ecc_unfixed++;
+ }
+ if(tags && retval == -EUCLEAN && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) {
+ tags->ecc_result = YAFFS_ECC_RESULT_FIXED;
+ dev->n_ecc_fixed++;
+ }
if (retval == 0)
return YAFFS_OK;
else
return YAFFS_FAIL;
}
-int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
+int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no)
{
- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
int retval;
T(YAFFS_TRACE_MTD,
- (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), blockNo));
+ (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), block_no));
retval =
mtd->block_markbad(mtd,
- blockNo * dev->nChunksPerBlock *
- dev->nDataBytesPerChunk);
+ block_no * dev->param.chunks_per_block *
+ dev->param.total_bytes_per_chunk);
if (retval == 0)
return YAFFS_OK;
}
-int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
- yaffs_BlockState * state, int *sequenceNumber)
+int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
+ yaffs_block_state_t *state, __u32 *seq_number)
{
- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
int retval;
T(YAFFS_TRACE_MTD,
- (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), blockNo));
+ (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), block_no));
retval =
mtd->block_isbad(mtd,
- blockNo * dev->nChunksPerBlock *
- dev->nDataBytesPerChunk);
+ block_no * dev->param.chunks_per_block *
+ dev->param.total_bytes_per_chunk);
if (retval) {
T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR)));
*state = YAFFS_BLOCK_STATE_DEAD;
- *sequenceNumber = 0;
+ *seq_number = 0;
} else {
- yaffs_ExtendedTags t;
+ yaffs_ext_tags t;
nandmtd2_ReadChunkWithTagsFromNAND(dev,
- blockNo *
- dev->nChunksPerBlock, NULL,
+ block_no *
+ dev->param.chunks_per_block, NULL,
&t);
- if (t.chunkUsed) {
- *sequenceNumber = t.sequenceNumber;
+ if (t.chunk_used) {
+ *seq_number = t.seq_number;
*state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
} else {
- *sequenceNumber = 0;
+ *seq_number = 0;
*state = YAFFS_BLOCK_STATE_EMPTY;
}
}
T(YAFFS_TRACE_MTD,
- (TSTR("block is bad seq %d state %d" TENDSTR), *sequenceNumber,
+ (TSTR("block is bad seq %d state %d" TENDSTR), *seq_number,
*state));
if (retval == 0)