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authorjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-06-06 12:52:39 +0000
committerjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-06-06 12:52:39 +0000
commitda7797b2ca558347d2f6862ede2ca96a1fee20ce (patch)
tree4de5c4b7528ff05a6f76ba33d18ea2fa8edf543a /target/linux/generic-2.6/files-2.6.26/fs/yaffs2/yaffs_mtdif2.c
parent70cc333f243e759bd07a83d22a42757dfec6dabc (diff)
[kernel] generic-2.6: sync yaffs code with the official CVS tree
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11378 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic-2.6/files-2.6.26/fs/yaffs2/yaffs_mtdif2.c')
-rw-r--r--target/linux/generic-2.6/files-2.6.26/fs/yaffs2/yaffs_mtdif2.c134
1 files changed, 75 insertions, 59 deletions
diff --git a/target/linux/generic-2.6/files-2.6.26/fs/yaffs2/yaffs_mtdif2.c b/target/linux/generic-2.6/files-2.6.26/fs/yaffs2/yaffs_mtdif2.c
index cdad0734b..3768b9b07 100644
--- a/target/linux/generic-2.6/files-2.6.26/fs/yaffs2/yaffs_mtdif2.c
+++ b/target/linux/generic-2.6/files-2.6.26/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 1.20 2008-05-05 07:58:58 charles Exp $";
#include "yportenv.h"
@@ -27,19 +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;
@@ -47,47 +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
@@ -101,11 +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;
@@ -115,10 +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;
@@ -130,38 +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