static int read_chunk_tags(struct yaffs_dev *dev, int nand_chunk, u8 *data, struct yaffs_ext_tags *tags)
{
unsigned int address;
//printf("%s %d (data=%p tags=%p)\n", __func__, nand_chunk, data, tags);
address = chunk_address(dev, nand_chunk);
if(data)
read_flash(data, NOR_CHUNK_DATA_SIZE, address);
if(tags) {
struct yaffs_packed_tags2_tags_only x;
read_flash(&x, NOR_CHUNK_TAGS_SIZE, address+NOR_CHUNK_DATA_SIZE);
yaffs_unpack_tags2_tags_only(tags, &x);
}
return YAFFS_OK;
}
int yaffs_summary_fetch(struct yaffs_dev *dev,
struct yaffs_ext_tags *tags,
int chunk_in_block)
{
struct yaffs_packed_tags2_tags_only tags_only;
struct yaffs_summary_tags *sum_tags;
if (chunk_in_block >= 0 && chunk_in_block < dev->chunks_per_summary) {
sum_tags = &dev->sum_tags[chunk_in_block];
tags_only.chunk_id = sum_tags->chunk_id;
tags_only.n_bytes = sum_tags->n_bytes;
tags_only.obj_id = sum_tags->obj_id;
yaffs_unpack_tags2_tags_only(tags, &tags_only);
return YAFFS_OK;
}
return YAFFS_FAIL;
}
int nandmtd2_read_chunk_tags(struct yaffs_dev *dev, int nand_chunk,
u8 *data, struct yaffs_ext_tags *tags)
{
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 local_data = 0;
loff_t addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk;
struct yaffs_packed_tags2 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;
yaffs_trace(YAFFS_TRACE_MTD,
"nandmtd2_read_chunk_tags chunk %d data %p tags %p",
nand_chunk, data, tags);
if (dev->param.inband_tags) {
if (!data) {
local_data = 1;
data = yaffs_get_temp_buffer(dev);
}
}
#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_OPS_AUTO_OOB;
ops.ooblen = packed_tags_size;
ops.len = data ? dev->data_bytes_per_chunk : packed_tags_size;
ops.ooboffs = 0;
ops.datbuf = data;
ops.oobbuf = yaffs_dev_to_lc(dev)->spare_buffer;
retval = mtd->read_oob(mtd, addr, &ops);
}
#else
if (!dev->param.inband_tags && data && tags) {
retval = mtd->read_ecc(mtd, addr, dev->data_bytes_per_chunk,
&dummy, data, dev->spare_buffer, NULL);
} else {
if (data)
retval =
mtd->read(mtd, addr, dev->data_bytes_per_chunk,
&dummy, data);
if (!dev->param.inband_tags && tags)
retval =
mtd->read_oob(mtd, addr, mtd->oobsize, &dummy,
dev->spare_buffer);
}
#endif
if (dev->param.inband_tags) {
if (tags) {
struct yaffs_packed_tags2_tags_only *pt2tp;
pt2tp =
(struct yaffs_packed_tags2_tags_only *)
&data[dev->data_bytes_per_chunk];
yaffs_unpack_tags2_tags_only(tags, pt2tp);
}
} else {
if (tags) {
memcpy(packed_tags_ptr,
yaffs_dev_to_lc(dev)->spare_buffer,
packed_tags_size);
yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc);
}
}
if (local_data)
yaffs_release_temp_buffer(dev, data);
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 yflash2_ReadChunkWithTagsFromNAND(struct yaffs_dev *dev,int nand_chunk, u8 *data, struct yaffs_ext_tags *tags)
{
int nread;
int pos;
int h;
int localData = 0;
int retval = YAFFS_OK;
int nRead;
yaffs_trace(YAFFS_TRACE_MTD,"read chunk %d data %p tags %p",nand_chunk, data, tags);
CheckInit();
if(dev->param.inband_tags){
/* Got to suck the tags out of the data area */
if(!data) {
localData=1;
data = yaffs_get_temp_buffer(dev);
}
struct yaffs_packed_tags2_tags_only * pt2tp;
pt2tp = (struct yaffs_packed_tags2_tags_only *)&data[dev->data_bytes_per_chunk];
pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE;
h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
lseek(h,pos,SEEK_SET);
nRead = read(h, data,dev->param.total_bytes_per_chunk);
yaffs_unpack_tags2_tags_only(tags,pt2tp);
if(nread != dev->param.total_bytes_per_chunk)
retval = YAFFS_FAIL;
if(localData)
yaffs_release_temp_buffer(dev, data);
}
else {
if(data)
{
pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE;
h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
lseek(h,pos,SEEK_SET);
nread = read(h,data,dev->data_bytes_per_chunk);
if(nread != dev->data_bytes_per_chunk)
retval = YAFFS_FAIL;
}
if(tags)
{
pos = (nand_chunk % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE + PAGE_DATA_SIZE;
h = filedisk.handle[(nand_chunk / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
lseek(h,pos,SEEK_SET);
if(0 && dev->param.is_yaffs2)
{
nread= read(h,tags,sizeof(struct yaffs_ext_tags));
if(nread != sizeof(struct yaffs_ext_tags))
retval = YAFFS_FAIL;
if(yaffs_check_all_ff((u8 *)tags, sizeof(struct yaffs_ext_tags)))
memset(tags, 0, sizeof(struct yaffs_ext_tags));
else
tags->chunk_used = 1;
}
else
{
struct yaffs_packed_tags2 pt;
nread= read(h,&pt,sizeof(pt));
yaffs_unpack_tags2(tags,&pt, !dev->param.no_tags_ecc);
#ifdef SIMULATE_FAILURES
if((nand_chunk >> 6) == 100) {
if(fail300 && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR){
tags->ecc_result = YAFFS_ECC_RESULT_FIXED;
fail300 = 0;
}
}
if((nand_chunk >> 6) == 110) {
if(fail320 && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR){
tags->ecc_result = YAFFS_ECC_RESULT_FIXED;
fail320 = 0;
}
}
#endif
if(failRead10>0 && nand_chunk == 10){
failRead10--;
nread = 0;
}
if(nread != sizeof(pt))
retval = YAFFS_FAIL;
}
}
}
return retval;
}
static int yaffs_tags_marshall_read(struct yaffs_dev *dev,
int nand_chunk, u8 *data,
struct yaffs_ext_tags *tags)
{
//int retval = 0;
int local_data = 0;
u8 spare_buffer[100];
enum yaffs_ecc_result ecc_result;
struct yaffs_packed_tags2 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;
yaffs_trace(YAFFS_TRACE_MTD,
"yaffs_tags_marshall_read chunk %d data %p tags %p",
nand_chunk, data, tags);
if (dev->param.inband_tags) {
if (!data) {
local_data = 1;
data = yaffs_get_temp_buffer(dev);
}
}
if (dev->param.inband_tags || (data && !tags))
dev->drv.drv_read_chunk_fn(dev, nand_chunk,
data, dev->param.total_bytes_per_chunk,
NULL, 0,
&ecc_result); //TODO check retval
else if (tags)
dev->drv.drv_read_chunk_fn(dev, nand_chunk,
data, dev->param.total_bytes_per_chunk,
spare_buffer, packed_tags_size,
&ecc_result); //TODO check retval
else
BUG();
if (dev->param.inband_tags) {
if (tags) {
struct yaffs_packed_tags2_tags_only *pt2tp;
pt2tp =
(struct yaffs_packed_tags2_tags_only *)
&data[dev->data_bytes_per_chunk];
yaffs_unpack_tags2_tags_only(tags, pt2tp);
}
} else if (tags) {
memcpy(packed_tags_ptr, spare_buffer, packed_tags_size);
yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc);
}
if (local_data)
yaffs_release_temp_buffer(dev, data);
if (tags && ecc_result == YAFFS_ECC_RESULT_UNFIXED) {
tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED;
dev->n_ecc_unfixed++;
}
if (tags && ecc_result == YAFFS_ECC_RESULT_FIXED) {
if (tags->ecc_result <= YAFFS_ECC_RESULT_NO_ERROR)
tags->ecc_result = YAFFS_ECC_RESULT_FIXED;
dev->n_ecc_fixed++;
}
if (ecc_result < YAFFS_ECC_RESULT_UNFIXED)
return YAFFS_OK;
else
return YAFFS_FAIL;
}
int nandmtd2_read_chunk_tags(struct yaffs_dev *dev, int nand_chunk,
u8 * data, struct yaffs_ext_tags *tags)
{
struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
struct mtd_oob_ops ops;
size_t dummy;
int retval = 0;
int local_data = 0;
loff_t addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk;
struct yaffs_packed_tags2 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;
yaffs_trace(YAFFS_TRACE_MTD,
"nandmtd2_read_chunk_tags chunk %d data %p tags %p",
nand_chunk, data, tags);
if (dev->param.inband_tags) {
if (!data) {
local_data = 1;
data = yaffs_get_temp_buffer(dev, __LINE__);
}
}
if (dev->param.inband_tags || (data && !tags))
retval = mtd_read(mtd, addr, dev->param.total_bytes_per_chunk,
&dummy, data);
else if (tags) {
#if 1
if(!data )
{
local_data = 1;
data = yaffs_get_temp_buffer(dev, __LINE__);
}
ops.mode = MTD_OPS_AUTO_OOB;
ops.ooblen = packed_tags_size;
ops.ooboffs = 0;
ops.len = dev->data_bytes_per_chunk;
ops.datbuf = data;
ops.oobbuf = yaffs_dev_to_lc(dev)->spare_buffer;
retval = mtd_read_oob(mtd, addr, &ops);
if(retval)
{
printk(KERN_ERR"yaffsdebug mtdiferror %s retval:%d unfixed:%d fixed:%d chunk:%d addr:0x%llx\n",\
(retval == -EUCLEAN)?"fix ecc":"unfix ecc",retval,dev->n_ecc_unfixed,dev->n_ecc_fixed,nand_chunk,addr);
#ifdef YAFFS_MVG_TEST_DEBUG_LOG
if(retval != -EUCLEAN)
{
printk(KERN_ERR"dump checksum_BCH chunk:%d addr:0x%x\n",nand_chunk,addr);
mtk_dump_byte(ops.datbuf,ops.len,0);
printk(KERN_ERR"dump BCH oob\n");
mtk_dump_byte(ops.oobbuf,ops.ooblen,0);
}
#endif
}
#else
ops.mode = MTD_OOB_AUTO;
ops.ooblen = packed_tags_size;
ops.len = data ? dev->data_bytes_per_chunk : packed_tags_size;
ops.ooboffs = 0;
ops.datbuf = data;
ops.oobbuf = yaffs_dev_to_lc(dev)->spare_buffer;
retval = mtd->read_oob(mtd, addr, &ops);
#endif
}
if (dev->param.inband_tags) {
if (tags) {
struct yaffs_packed_tags2_tags_only *pt2tp;
pt2tp =
(struct yaffs_packed_tags2_tags_only *)&data[dev->
data_bytes_per_chunk];
yaffs_unpack_tags2_tags_only(tags, pt2tp);
}
} else {
if (tags) {
memcpy(packed_tags_ptr,
yaffs_dev_to_lc(dev)->spare_buffer,
packed_tags_size);
yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc);
}
}
if (local_data)
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 ynandif_ReadChunkWithTagsFromNAND(struct yaffs_dev *dev, int nand_chunk,
u8 *data, struct yaffs_ext_tags *tags)
{
struct yaffs_packed_tags2 pt;
int localData = 0;
void *spare = NULL;
unsigned spareSize;
int retval = 0;
int eccStatus; /* 0 = ok, 1 = fixed, -1 = unfixed */
struct ynandif_Geometry *geometry = (struct ynandif_Geometry *)(dev->driver_context);
yaffs_trace(YAFFS_TRACE_MTD,
"nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p",
nand_chunk, data, tags);
if (!tags) {
spare = NULL;
spareSize = 0;
} else if (dev->param.inband_tags) {
if (!data) {
localData = 1;
data = yaffs_get_temp_buffer(dev);
}
spare = NULL;
spareSize = 0;
} else {
spare = &pt;
spareSize = sizeof(struct yaffs_packed_tags2);
}
retval = geometry->readChunk(dev, nand_chunk,
data,
data ? dev->param.total_bytes_per_chunk : 0,
spare, spareSize,
&eccStatus);
if (dev->param.inband_tags) {
if (tags) {
struct yaffs_packed_tags2_tags_only *pt2tp;
pt2tp = (struct yaffs_packed_tags2_tags_only *)
&data[dev->data_bytes_per_chunk];
yaffs_unpack_tags2_tags_only(tags, pt2tp);
}
} else {
if (tags)
yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc);
}
if (tags && tags->chunk_used) {
if (eccStatus < 0 ||
tags->ecc_result == YAFFS_ECC_RESULT_UNFIXED)
tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED;
else if (eccStatus > 0 ||
tags->ecc_result == YAFFS_ECC_RESULT_FIXED)
tags->ecc_result = YAFFS_ECC_RESULT_FIXED;
else
tags->ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
}
if (localData)
yaffs_release_temp_buffer(dev, data);
return retval;
}
