summaryrefslogtreecommitdiff
path: root/fs/yaffs2/patches
diff options
context:
space:
mode:
Diffstat (limited to 'fs/yaffs2/patches')
-rw-r--r--fs/yaffs2/patches/README.txt6
-rw-r--r--fs/yaffs2/patches/yaffs_mtdif2.c258
2 files changed, 0 insertions, 264 deletions
diff --git a/fs/yaffs2/patches/README.txt b/fs/yaffs2/patches/README.txt
deleted file mode 100644
index e3666d9..0000000
--- a/fs/yaffs2/patches/README.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-This directory holds patches that are useful for Linux integration.
-
-Right now there is only one patched file, yaffs_mtdif2.c. This has been
-patched with a tweaked version of "Sergey's patch" and typically makes a
-stock mtd work properly.
-
diff --git a/fs/yaffs2/patches/yaffs_mtdif2.c b/fs/yaffs2/patches/yaffs_mtdif2.c
deleted file mode 100644
index df5753b..0000000
--- a/fs/yaffs2/patches/yaffs_mtdif2.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/*
- * YAFFS: Yet another FFS. A NAND-flash specific file system.
- *
- * Copyright (C) 2002 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * 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 1.2 2007/03/07 08:05:58 colin Exp $";
-
-#include "yportenv.h"
-
-
-#include "yaffs_mtdif2.h"
-
-#include "linux/mtd/mtd.h"
-#include "linux/types.h"
-#include "linux/time.h"
-
-#include "yaffs_packedtags2.h"
-
-
-void nandmtd2_pt2buf(yaffs_Device *dev, yaffs_PackedTags2 *pt, int is_raw)
-{
- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
- __u8 *ptab = (__u8 *)pt; /* packed tags as bytes */
-
- int i, j = 0, k, n;
-
- /* Pack buffer with 0xff */
- for (i = 0; i < mtd->oobsize; i++)
- dev->spareBuffer[i] = 0xff;
-
- if(!is_raw){
- memcpy(dev->spareBuffer,pt,sizeof(yaffs_PackedTags2));
- } else {
- j = 0;
- 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 < sizeof(yaffs_PackedTags2); 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] = ptab[i];
- k++;
- 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 *ptab = (__u8 *)pt; /* packed tags as bytes */
-
-
- if (!is_raw) {
-
- memcpy(pt,dev->spareBuffer,sizeof(yaffs_PackedTags2));
- } else {
- j = 0;
- 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 < sizeof(yaffs_PackedTags2); 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();
- }
- }
- ptab[i] = dev->spareBuffer[k];
- k++;
- n--;
- }
- }
-
-}
-
-int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
- const __u8 * data,
- const yaffs_ExtendedTags * tags)
-{
- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
- size_t dummy;
- int retval = 0;
-
- loff_t addr = ((loff_t) chunkInNAND) * dev->nBytesPerChunk;
-
- yaffs_PackedTags2 pt;
-
- T(YAFFS_TRACE_MTD,
- (TSTR
- ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p"
- TENDSTR), chunkInNAND, data, tags));
-
- if (tags) {
- yaffs_PackTags2(&pt, tags);
- }
-
- if (data && tags) {
- nandmtd2_pt2buf(dev, &pt, 0);
- retval =
- mtd->write_ecc(mtd, addr, dev->nBytesPerChunk,
- &dummy, data, dev->spareBuffer,
- NULL);
-
- } else {
-
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("Write chunk with null tags or data!" TENDSTR)));
- YBUG();
- }
-
- if (retval == 0)
- return YAFFS_OK;
- else
- return YAFFS_FAIL;
-}
-
-int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
- __u8 * data, yaffs_ExtendedTags * tags)
-{
- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
- size_t dummy;
- int retval = 0;
-
- loff_t addr = ((loff_t) chunkInNAND) * dev->nBytesPerChunk;
-
- yaffs_PackedTags2 pt;
-
- T(YAFFS_TRACE_MTD,
- (TSTR
- ("nandmtd2_ReadChunkWithTagsToNAND chunk %d data %p tags %p"
- TENDSTR), chunkInNAND, data, tags));
-
- if (0 && data && tags) {
- 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) {
- retval =
- mtd->read_oob(mtd, addr, mtd->oobsize, &dummy,
- dev->spareBuffer);
- nandmtd2_buf2pt(dev, &pt, 1);
- }
- }
-
- if (tags)
- yaffs_UnpackTags2(tags, &pt);
-
- if (retval == 0)
- return YAFFS_OK;
- else
- return YAFFS_FAIL;
-}
-
-int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
-{
- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
- int retval;
- T(YAFFS_TRACE_MTD,
- (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), blockNo));
-
- retval =
- mtd->block_markbad(mtd,
- blockNo * dev->nChunksPerBlock *
- dev->nBytesPerChunk);
-
- if (retval == 0)
- return YAFFS_OK;
- else
- return YAFFS_FAIL;
-
-}
-
-int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
- yaffs_BlockState * state, int *sequenceNumber)
-{
- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
- int retval;
-
- T(YAFFS_TRACE_MTD,
- (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), blockNo));
- retval =
- mtd->block_isbad(mtd,
- blockNo * dev->nChunksPerBlock *
- dev->nBytesPerChunk);
-
- if (retval) {
- T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR)));
-
- *state = YAFFS_BLOCK_STATE_DEAD;
- *sequenceNumber = 0;
- } else {
- yaffs_ExtendedTags t;
- nandmtd2_ReadChunkWithTagsFromNAND(dev,
- blockNo *
- dev->nChunksPerBlock, NULL,
- &t);
-
- if (t.chunkUsed) {
- *sequenceNumber = t.sequenceNumber;
- *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
- } else {
- *sequenceNumber = 0;
- *state = YAFFS_BLOCK_STATE_EMPTY;
- }
-
- T(YAFFS_TRACE_MTD,
- (TSTR("block is OK seq %d state %d" TENDSTR), *sequenceNumber,
- *state));
- }
-
- if (retval == 0)
- return YAFFS_OK;
- else
- return YAFFS_FAIL;
-}
-
generated by cgit v1.1 at 2024-12-21 12:10:33 +0000