[MTD] Introduce writesize
At least two flashes exists that have the concept of a minimum write unit,
similar to NAND pages, but no other NAND characteristics. Therefore, rename
the minimum write unit to "writesize" for all flashes, including NAND.
Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index 9adc6d6..fbccb2a 100644
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -247,15 +247,15 @@
/* Read the primary version, if available */
if (td->options & NAND_BBT_VERSION) {
- nand_read_raw(mtd, buf, td->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize);
- td->version[0] = buf[mtd->oobblock + td->veroffs];
+ nand_read_raw(mtd, buf, td->pages[0] << this->page_shift, mtd->writesize, mtd->oobsize);
+ td->version[0] = buf[mtd->writesize + td->veroffs];
printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", td->pages[0], td->version[0]);
}
/* Read the mirror version, if available */
if (md && (md->options & NAND_BBT_VERSION)) {
- nand_read_raw(mtd, buf, md->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize);
- md->version[0] = buf[mtd->oobblock + md->veroffs];
+ nand_read_raw(mtd, buf, md->pages[0] << this->page_shift, mtd->writesize, mtd->oobsize);
+ md->version[0] = buf[mtd->writesize + md->veroffs];
printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", md->pages[0], md->version[0]);
}
@@ -298,8 +298,8 @@
readlen = bd->len;
} else {
/* Full page content should be read */
- scanlen = mtd->oobblock + mtd->oobsize;
- readlen = len * mtd->oobblock;
+ scanlen = mtd->writesize + mtd->oobsize;
+ readlen = len * mtd->writesize;
ooblen = len * mtd->oobsize;
}
@@ -334,7 +334,7 @@
/* Read the full oob until read_oob is fixed to
* handle single byte reads for 16 bit buswidth */
- ret = mtd->read_oob(mtd, from + j * mtd->oobblock, mtd->oobsize, &retlen, buf);
+ ret = mtd->read_oob(mtd, from + j * mtd->writesize, mtd->oobsize, &retlen, buf);
if (ret)
return ret;
@@ -345,7 +345,7 @@
break;
}
} else {
- if (check_pattern(&buf[j * scanlen], scanlen, mtd->oobblock, bd)) {
+ if (check_pattern(&buf[j * scanlen], scanlen, mtd->writesize, bd)) {
this->bbt[i >> 3] |= 0x03 << (i & 0x6);
printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n",
i >> 1, (unsigned int)from);
@@ -381,7 +381,7 @@
struct nand_chip *this = mtd->priv;
int i, chips;
int bits, startblock, block, dir;
- int scanlen = mtd->oobblock + mtd->oobsize;
+ int scanlen = mtd->writesize + mtd->oobsize;
int bbtblocks;
/* Search direction top -> down ? */
@@ -414,11 +414,11 @@
for (block = 0; block < td->maxblocks; block++) {
int actblock = startblock + dir * block;
/* Read first page */
- nand_read_raw(mtd, buf, actblock << this->bbt_erase_shift, mtd->oobblock, mtd->oobsize);
- if (!check_pattern(buf, scanlen, mtd->oobblock, td)) {
+ nand_read_raw(mtd, buf, actblock << this->bbt_erase_shift, mtd->writesize, mtd->oobsize);
+ if (!check_pattern(buf, scanlen, mtd->writesize, td)) {
td->pages[i] = actblock << (this->bbt_erase_shift - this->page_shift);
if (td->options & NAND_BBT_VERSION) {
- td->version[i] = buf[mtd->oobblock + td->veroffs];
+ td->version[i] = buf[mtd->writesize + td->veroffs];
}
break;
}
@@ -586,7 +586,7 @@
/* Calc length */
len = (size_t) (numblocks >> sft);
/* Make it page aligned ! */
- len = (len + (mtd->oobblock - 1)) & ~(mtd->oobblock - 1);
+ len = (len + (mtd->writesize - 1)) & ~(mtd->writesize - 1);
/* Preset the buffer with 0xff */
memset(buf, 0xff, len + (len >> this->page_shift) * mtd->oobsize);
offs = 0;
@@ -1063,13 +1063,13 @@
this->bbt_md = &bbt_mirror_descr;
}
if (!this->badblock_pattern) {
- this->badblock_pattern = (mtd->oobblock > 512) ? &largepage_flashbased : &smallpage_flashbased;
+ this->badblock_pattern = (mtd->writesize > 512) ? &largepage_flashbased : &smallpage_flashbased;
}
} else {
this->bbt_td = NULL;
this->bbt_md = NULL;
if (!this->badblock_pattern) {
- this->badblock_pattern = (mtd->oobblock > 512) ?
+ this->badblock_pattern = (mtd->writesize > 512) ?
&largepage_memorybased : &smallpage_memorybased;
}
}