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Upstream-Status: Backport
diff -urN yaffs2.orig/yaffs_mtdif2.c yaffs2/yaffs_mtdif2.c
--- yaffs2.orig/yaffs_mtdif2.c 2005-12-07 14:00:38.000000000 -0800
+++ yaffs2/yaffs_mtdif2.c 2006-02-10 17:13:58.000000000 -0800
@@ -29,6 +29,130 @@
#include "yaffs_packedtags2.h"
+#define PT2_BYTES 25
+
+void nandmtd2_pt2buf(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 pt2_byte_buf[PT2_BYTES];
+
+ /* Pack buffer with 0xff */
+ for (i = 0; i < mtd->oobsize; i++)
+ dev->spareBuffer[i] = 0xff;
+
+ if (!is_raw) {
+ *((unsigned int *) &dev->spareBuffer[0]) = pt->t.sequenceNumber;
+ *((unsigned int *) &dev->spareBuffer[4]) = pt->t.objectId;
+ *((unsigned int *) &dev->spareBuffer[8]) = pt->t.chunkId;
+ *((unsigned int *) &dev->spareBuffer[12]) = pt->t.byteCount;
+ dev->spareBuffer[16] = pt->ecc.colParity;
+ dev->spareBuffer[17] = pt->ecc.lineParity & 0xff;
+ dev->spareBuffer[18] = (pt->ecc.lineParity >> 8) & 0xff;
+ dev->spareBuffer[19] = (pt->ecc.lineParity >> 16) & 0xff;
+ dev->spareBuffer[20] = (pt->ecc.lineParity >> 24) & 0xff;
+ dev->spareBuffer[21] = pt->ecc.lineParityPrime & 0xff;
+ dev->spareBuffer[22] = (pt->ecc.lineParityPrime >> 8) & 0xff;
+ dev->spareBuffer[23] = (pt->ecc.lineParityPrime >> 16) & 0xff;
+ dev->spareBuffer[24] = (pt->ecc.lineParityPrime >> 24) & 0xff;
+ } else {
+ *((unsigned int *) &pt2_byte_buf[0]) = pt->t.sequenceNumber;
+ *((unsigned int *) &pt2_byte_buf[4]) = pt->t.objectId;
+ *((unsigned int *) &pt2_byte_buf[8]) = pt->t.chunkId;
+ *((unsigned int *) &pt2_byte_buf[12]) = pt->t.byteCount;
+ pt2_byte_buf[16] = pt->ecc.colParity;
+ pt2_byte_buf[17] = pt->ecc.lineParity & 0xff;
+ pt2_byte_buf[18] = (pt->ecc.lineParity >> 8) & 0xff;
+ pt2_byte_buf[19] = (pt->ecc.lineParity >> 16) & 0xff;
+ pt2_byte_buf[20] = (pt->ecc.lineParity >> 24) & 0xff;
+ pt2_byte_buf[21] = pt->ecc.lineParityPrime & 0xff;
+ pt2_byte_buf[22] = (pt->ecc.lineParityPrime >> 8) & 0xff;
+ pt2_byte_buf[23] = (pt->ecc.lineParityPrime >> 16) & 0xff;
+ pt2_byte_buf[24] = (pt->ecc.lineParityPrime >> 24) & 0xff;
+
+ 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 < PT2_BYTES; 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++] = pt2_byte_buf[i];
+ 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 pt2_byte_buf[PT2_BYTES];
+
+
+ if (!is_raw) {
+ pt->t.sequenceNumber = *((unsigned int *) &dev->spareBuffer[0]);
+ pt->t.objectId = *((unsigned int *) &dev->spareBuffer[4]);
+ pt->t.chunkId = *((unsigned int *) &dev->spareBuffer[8]);
+ pt->t.byteCount = *((unsigned int *) &dev->spareBuffer[12]);
+ pt->ecc.colParity = dev->spareBuffer[16];
+ pt->ecc.lineParity = (dev->spareBuffer[17] & 0x000000ff) |
+ ((dev->spareBuffer[18] << 8) & 0x0000ff00) |
+ ((dev->spareBuffer[19] << 16) & 0x00ff0000) |
+ ((dev->spareBuffer[20] << 24) & 0xff000000);
+ pt->ecc.lineParityPrime = (dev->spareBuffer[21] & 0x000000ff) |
+ ((dev->spareBuffer[22] << 8) & 0x0000ff00) |
+ ((dev->spareBuffer[23] << 16) & 0x00ff0000) |
+ ((dev->spareBuffer[24] << 24) & 0xff000000);
+ } else {
+ 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 < PT2_BYTES; 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();
+ }
+ }
+ pt2_byte_buf[i] = dev->spareBuffer[k++];
+ n--;
+ }
+ pt->t.sequenceNumber = *((unsigned int *) &pt2_byte_buf[0]);
+ pt->t.objectId = *((unsigned int *) &pt2_byte_buf[4]);
+ pt->t.chunkId = *((unsigned int *) &pt2_byte_buf[8]);
+ pt->t.byteCount = *((unsigned int *) &pt2_byte_buf[12]);
+ pt->ecc.colParity = pt2_byte_buf[16];
+ pt->ecc.lineParity = (pt2_byte_buf[17] & 0x000000ff) |
+ ((pt2_byte_buf[18] << 8) & 0x0000ff00) |
+ ((pt2_byte_buf[19] << 16) & 0x00ff0000) |
+ ((pt2_byte_buf[20] << 24) & 0xff000000);
+ pt->ecc.lineParityPrime = (pt2_byte_buf[21] & 0x000000ff) |
+ ((pt2_byte_buf[22] << 8) & 0x0000ff00) |
+ ((pt2_byte_buf[23] << 16) & 0x00ff0000) |
+ ((pt2_byte_buf[24] << 24) & 0xff000000);
+ }
+}
+
int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
const __u8 * data,
const yaffs_ExtendedTags * tags)
@@ -51,24 +175,22 @@
}
if (data && tags) {
- if (dev->useNANDECC)
- retval =
- mtd->write_ecc(mtd, addr, dev->nBytesPerChunk,
- &dummy, data, (__u8 *) & pt, NULL);
- else
+ nandmtd2_pt2buf(dev, &pt, 0);
retval =
mtd->write_ecc(mtd, addr, dev->nBytesPerChunk,
- &dummy, data, (__u8 *) & pt, NULL);
+ &dummy, data, dev->spareBuffer,
+ NULL);
} else {
if (data)
retval =
mtd->write(mtd, addr, dev->nBytesPerChunk, &dummy,
data);
- if (tags)
+ if (tags) {
+ nandmtd2_pt2buf(dev, &pt, 1);
retval =
mtd->write_oob(mtd, addr, mtd->oobsize, &dummy,
- (__u8 *) & pt);
-
+ dev->spareBuffer);
+ }
}
if (retval == 0)
@@ -94,30 +216,24 @@
TENDSTR), chunkInNAND, data, tags));
if (data && tags) {
- if (dev->useNANDECC) {
retval =
mtd->read_ecc(mtd, addr, dev->nBytesPerChunk,
&dummy, data, dev->spareBuffer,
NULL);
- } else {
- 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)
+ if (tags) {
retval =
mtd->read_oob(mtd, addr, mtd->oobsize, &dummy,
dev->spareBuffer);
+ nandmtd2_buf2pt(dev, &pt, 1);
+ }
}
- memcpy(&pt, dev->spareBuffer, sizeof(pt));
-
if (tags)
yaffs_UnpackTags2(tags, &pt);
@@ -178,10 +294,11 @@
*sequenceNumber = 0;
*state = YAFFS_BLOCK_STATE_EMPTY;
}
+
+ T(YAFFS_TRACE_MTD,
+ (TSTR("block is OK seq %d state %d" TENDSTR), *sequenceNumber,
+ *state));
}
- T(YAFFS_TRACE_MTD,
- (TSTR("block is bad seq %d state %d" TENDSTR), *sequenceNumber,
- *state));
if (retval == 0)
return YAFFS_OK;
|
