[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/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index fe5b489..198bb85 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -354,7 +354,7 @@
if (ONENAND_CURRENT_BUFFERRAM(this)) {
if (area == ONENAND_DATARAM)
- return mtd->oobblock;
+ return mtd->writesize;
if (area == ONENAND_SPARERAM)
return mtd->oobsize;
}
@@ -632,14 +632,14 @@
/* TODO handling oob */
while (read < len) {
- thislen = min_t(int, mtd->oobblock, len - read);
+ thislen = min_t(int, mtd->writesize, len - read);
- column = from & (mtd->oobblock - 1);
- if (column + thislen > mtd->oobblock)
- thislen = mtd->oobblock - column;
+ column = from & (mtd->writesize - 1);
+ if (column + thislen > mtd->writesize)
+ thislen = mtd->writesize - column;
if (!onenand_check_bufferram(mtd, from)) {
- this->command(mtd, ONENAND_CMD_READ, from, mtd->oobblock);
+ this->command(mtd, ONENAND_CMD_READ, from, mtd->writesize);
ret = this->wait(mtd, FL_READING);
/* First copy data and check return value for ECC handling */
@@ -752,7 +752,7 @@
/* Read more? */
if (read < len) {
/* Page size */
- from += mtd->oobblock;
+ from += mtd->writesize;
column = 0;
}
}
@@ -809,7 +809,7 @@
void __iomem *dataram0, *dataram1;
int ret = 0;
- this->command(mtd, ONENAND_CMD_READ, addr, mtd->oobblock);
+ this->command(mtd, ONENAND_CMD_READ, addr, mtd->writesize);
ret = this->wait(mtd, FL_READING);
if (ret)
@@ -819,9 +819,9 @@
/* Check, if the two dataram areas are same */
dataram0 = this->base + ONENAND_DATARAM;
- dataram1 = dataram0 + mtd->oobblock;
+ dataram1 = dataram0 + mtd->writesize;
- if (memcmp(dataram0, dataram1, mtd->oobblock))
+ if (memcmp(dataram0, dataram1, mtd->writesize))
return -EBADMSG;
return 0;
@@ -831,7 +831,7 @@
#define onenand_verify_oob(...) (0)
#endif
-#define NOTALIGNED(x) ((x & (mtd->oobblock - 1)) != 0)
+#define NOTALIGNED(x) ((x & (mtd->writesize - 1)) != 0)
/**
* onenand_write_ecc - [MTD Interface] OneNAND write with ECC
@@ -875,14 +875,14 @@
/* Loop until all data write */
while (written < len) {
- int thislen = min_t(int, mtd->oobblock, len - written);
+ int thislen = min_t(int, mtd->writesize, len - written);
- this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobblock);
+ this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->writesize);
this->write_bufferram(mtd, ONENAND_DATARAM, buf, 0, thislen);
this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize);
- this->command(mtd, ONENAND_CMD_PROG, to, mtd->oobblock);
+ this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize);
onenand_update_bufferram(mtd, to, 1);
@@ -1070,10 +1070,10 @@
* If the given tuple is >= pagesize then
* write it out from the iov
*/
- if ((vecs->iov_len - len) >= mtd->oobblock) {
+ if ((vecs->iov_len - len) >= mtd->writesize) {
pbuf = vecs->iov_base + len;
- len += mtd->oobblock;
+ len += mtd->writesize;
/* Check, if we have to switch to the next tuple */
if (len >= (int) vecs->iov_len) {
@@ -1083,8 +1083,8 @@
}
} else {
int cnt = 0, thislen;
- while (cnt < mtd->oobblock) {
- thislen = min_t(int, mtd->oobblock - cnt, vecs->iov_len - len);
+ while (cnt < mtd->writesize) {
+ thislen = min_t(int, mtd->writesize - cnt, vecs->iov_len - len);
memcpy(this->page_buf + cnt, vecs->iov_base + len, thislen);
cnt += thislen;
len += thislen;
@@ -1098,12 +1098,12 @@
}
}
- this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobblock);
+ this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->writesize);
- this->write_bufferram(mtd, ONENAND_DATARAM, pbuf, 0, mtd->oobblock);
+ this->write_bufferram(mtd, ONENAND_DATARAM, pbuf, 0, mtd->writesize);
this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize);
- this->command(mtd, ONENAND_CMD_PROG, to, mtd->oobblock);
+ this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize);
onenand_update_bufferram(mtd, to, 1);
@@ -1121,9 +1121,9 @@
goto out;
}
- written += mtd->oobblock;
+ written += mtd->writesize;
- to += mtd->oobblock;
+ to += mtd->writesize;
}
out:
@@ -1467,11 +1467,11 @@
int ret;
/* Force buffer page aligned */
- if (len < mtd->oobblock) {
+ if (len < mtd->writesize) {
memcpy(this->page_buf, buf, len);
- memset(this->page_buf + len, 0xff, mtd->oobblock - len);
+ memset(this->page_buf + len, 0xff, mtd->writesize - len);
pbuf = this->page_buf;
- len = mtd->oobblock;
+ len = mtd->writesize;
}
/* Enter OTP access mode */
@@ -1546,12 +1546,12 @@
otp_pages = 10;
if (mode == MTD_OTP_FACTORY) {
- from += mtd->oobblock * otp_pages;
+ from += mtd->writesize * otp_pages;
otp_pages = 64 - otp_pages;
}
/* Check User/Factory boundary */
- if (((mtd->oobblock * otp_pages) - (from + len)) < 0)
+ if (((mtd->writesize * otp_pages) - (from + len)) < 0)
return 0;
while (len > 0 && otp_pages > 0) {
@@ -1564,10 +1564,10 @@
otpinfo = (struct otp_info *) buf;
otpinfo->start = from;
- otpinfo->length = mtd->oobblock;
+ otpinfo->length = mtd->writesize;
otpinfo->locked = 0;
- from += mtd->oobblock;
+ from += mtd->writesize;
buf += sizeof(struct otp_info);
*retlen += sizeof(struct otp_info);
} else {
@@ -1811,15 +1811,15 @@
/* OneNAND page size & block size */
/* The data buffer size is equal to page size */
- mtd->oobblock = this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE);
- mtd->oobsize = mtd->oobblock >> 5;
+ mtd->writesize = this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE);
+ mtd->oobsize = mtd->writesize >> 5;
/* Pagers per block is always 64 in OneNAND */
- mtd->erasesize = mtd->oobblock << 6;
+ mtd->erasesize = mtd->writesize << 6;
this->erase_shift = ffs(mtd->erasesize) - 1;
- this->page_shift = ffs(mtd->oobblock) - 1;
+ this->page_shift = ffs(mtd->writesize) - 1;
this->ppb_shift = (this->erase_shift - this->page_shift);
- this->page_mask = (mtd->erasesize / mtd->oobblock) - 1;
+ this->page_mask = (mtd->erasesize / mtd->writesize) - 1;
/* REVIST: Multichip handling */
@@ -1909,7 +1909,7 @@
/* Allocate buffers, if necessary */
if (!this->page_buf) {
size_t len;
- len = mtd->oobblock + mtd->oobsize;
+ len = mtd->writesize + mtd->oobsize;
this->page_buf = kmalloc(len, GFP_KERNEL);
if (!this->page_buf) {
printk(KERN_ERR "onenand_scan(): Can't allocate page_buf\n");