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 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;
}
