* YAFFS: Yet another FFS. A NAND-flash specific file system.
* yaffs_mtdif1.c NAND mtd interface functions for small-page NAND.
*
- * Copyright (C) 2002 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* This program is free software; you can redistribute it and/or modify
*/
#include "yportenv.h"
+#include "yaffs_trace.h"
#include "yaffs_guts.h"
#include "yaffs_packedtags1.h"
-#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC
+#include "yaffs_tagscompat.h" /* for yaffs_CalcTagsECC */
+#include "yaffs_linux.h"
#include "linux/kernel.h"
#include "linux/version.h"
#include "linux/mtd/mtd.h"
/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
-
-const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.1 2007-07-18 19:40:38 charles Exp $";
+#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
#ifndef CONFIG_YAFFS_9BYTE_TAGS
# define YTAG1_SIZE 8
* Returns YAFFS_OK or YAFFS_FAIL.
*/
int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev,
- int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags)
+ int chunkInNAND, const __u8 *data, const yaffs_ExtendedTags *etags)
{
- struct mtd_info * mtd = dev->genericDevice;
+ struct mtd_info *mtd = yaffs_DeviceToContext(dev)->mtd;
int chunkBytes = dev->nDataBytesPerChunk;
loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
struct mtd_oob_ops ops;
retval = mtd->write_oob(mtd, addr, &ops);
if (retval) {
- yaffs_trace(YAFFS_TRACE_MTD,
- "write_oob failed, chunk %d, mtd error %d\n",
- chunkInNAND, retval);
+ T(YAFFS_TRACE_MTD,
+ (TSTR("write_oob failed, chunk %d, mtd error %d"TENDSTR),
+ chunkInNAND, retval));
}
return retval ? YAFFS_FAIL : YAFFS_OK;
}
/* Return with empty ExtendedTags but add eccResult.
*/
-static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval)
+static int rettags(yaffs_ExtendedTags *etags, int eccResult, int retval)
{
if (etags) {
memset(etags, 0, sizeof(*etags));
* Returns YAFFS_OK or YAFFS_FAIL.
*/
int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
- int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags)
+ int chunkInNAND, __u8 *data, yaffs_ExtendedTags *etags)
{
- struct mtd_info * mtd = dev->genericDevice;
+ struct mtd_info *mtd = yaffs_DeviceToContext(dev)->mtd;
int chunkBytes = dev->nDataBytesPerChunk;
loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
int eccres = YAFFS_ECC_RESULT_NO_ERROR;
ops.datbuf = data;
ops.oobbuf = (__u8 *)&pt1;
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20))
+#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 20))
/* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
* help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
*/
*/
retval = mtd->read_oob(mtd, addr, &ops);
if (retval) {
- yaffs_trace(YAFFS_TRACE_MTD,
- "read_oob failed, chunk %d, mtd error %d\n",
- chunkInNAND, retval);
+ T(YAFFS_TRACE_MTD,
+ (TSTR("read_oob failed, chunk %d, mtd error %d"TENDSTR),
+ chunkInNAND, retval));
}
switch (retval) {
deleted = !pt1.deleted;
pt1.deleted = 1;
#else
- (void) deleted; /* not used */
+ deleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7);
#endif
/* Check the packed tags mini-ECC and correct if necessary/possible.
case 1:
/* recovered tags-ECC error */
dev->tagsEccFixed++;
- eccres = YAFFS_ECC_RESULT_FIXED;
+ if (eccres == YAFFS_ECC_RESULT_NO_ERROR)
+ eccres = YAFFS_ECC_RESULT_FIXED;
break;
default:
/* unrecovered tags-ECC error */
yaffs_UnpackTags1(etags, &pt1);
etags->eccResult = eccres;
- /* Set deleted state.
- */
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
+ /* Set deleted state */
etags->chunkDeleted = deleted;
-#else
- etags->chunkDeleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7);
-#endif
return YAFFS_OK;
}
*/
int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
{
- struct mtd_info * mtd = dev->genericDevice;
- int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk;
+ struct mtd_info *mtd = yaffs_DeviceToContext(dev)->mtd;
+ int blocksize = dev->param.nChunksPerBlock * dev->nDataBytesPerChunk;
int retval;
- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo);
+ T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("marking block %d bad"TENDSTR), blockNo));
retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
return (retval) ? YAFFS_FAIL : YAFFS_OK;
}
/* Check any MTD prerequists.
- *
+ *
* Returns YAFFS_OK or YAFFS_FAIL.
*/
-static int nandmtd1_TestPrerequists(struct mtd_info * mtd)
+static int nandmtd1_TestPrerequists(struct mtd_info *mtd)
{
/* 2.6.18 has mtd->ecclayout->oobavail */
/* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */
int oobavail = mtd->ecclayout->oobavail;
if (oobavail < YTAG1_SIZE) {
- yaffs_trace(YAFFS_TRACE_ERROR,
- "mtd device has only %d bytes for tags, need %d",
- oobavail, YTAG1_SIZE);
+ T(YAFFS_TRACE_ERROR,
+ (TSTR("mtd device has only %d bytes for tags, need %d"TENDSTR),
+ oobavail, YTAG1_SIZE));
return YAFFS_FAIL;
}
return YAFFS_OK;
* Always returns YAFFS_OK.
*/
int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
- yaffs_BlockState * pState, int *pSequenceNumber)
+ yaffs_BlockState *pState, __u32 *pSequenceNumber)
{
- struct mtd_info * mtd = dev->genericDevice;
- int chunkNo = blockNo * dev->nChunksPerBlock;
+ struct mtd_info *mtd = yaffs_DeviceToContext(dev)->mtd;
+ int chunkNo = blockNo * dev->param.nChunksPerBlock;
+ loff_t addr = (loff_t)chunkNo * dev->nDataBytesPerChunk;
yaffs_ExtendedTags etags;
int state = YAFFS_BLOCK_STATE_DEAD;
int seqnum = 0;
/* We don't yet have a good place to test for MTD config prerequists.
* Do it here as we are called during the initial scan.
*/
- if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) {
+ if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK)
return YAFFS_FAIL;
- }
retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
+ etags.blockBad = (mtd->block_isbad)(mtd, addr);
if (etags.blockBad) {
- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
- "block %d is marked bad", blockNo);
+ T(YAFFS_TRACE_BAD_BLOCKS,
+ (TSTR("block %d is marked bad"TENDSTR), blockNo));
state = YAFFS_BLOCK_STATE_DEAD;
- }
- else if (etags.chunkUsed) {
+ } else if (etags.eccResult != YAFFS_ECC_RESULT_NO_ERROR) {
+ /* bad tags, need to look more closely */
+ state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
+ } else if (etags.chunkUsed) {
state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
seqnum = etags.sequenceNumber;
- }
- else {
+ } else {
state = YAFFS_BLOCK_STATE_EMPTY;
}
return YAFFS_OK;
}
-#endif /*KERNEL_VERSION*/
+#endif /*MTD_VERSION*/
projects / yaffs2.git / blobdiff