[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>

1 files changed, 32 insertions, 32 deletions

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 08dffb7a9389..055f6608a2ec 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -560,9 +560,9 @@ static void nand_command(struct mtd_info *mtd, unsigned command, int column, int
         if (command == NAND_CMD_SEQIN) {
                 int readcmd;
 
-                if (column >= mtd->oobblock) {
+                if (column >= mtd->writesize) {
                         /* OOB area */
-                        column -= mtd->oobblock;
+                        column -= mtd->writesize;
                         readcmd = NAND_CMD_READOOB;
                 } else if (column < 256) {
                         /* First 256 bytes --> READ0 */
@@ -658,7 +658,7 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned command, int column,
 
         /* Emulate NAND_CMD_READOOB */
         if (command == NAND_CMD_READOOB) {
-                column += mtd->oobblock;
+                column += mtd->writesize;
                 command = NAND_CMD_READ0;
         }
 
@@ -889,7 +889,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *this, int pag
                 /* No ecc, write all */
         case NAND_ECC_NONE:
                 printk(KERN_WARNING "Writing data without ECC to NAND-FLASH is not recommended\n");
-                this->write_buf(mtd, this->data_poi, mtd->oobblock);
+                this->write_buf(mtd, this->data_poi, mtd->writesize);
                 break;
 
                 /* Software ecc 3/256, write all */
@@ -900,7 +900,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *this, int pag
                                 oob_buf[oob_config[eccidx]] = ecc_code[i];
                         datidx += this->eccsize;
                 }
-                this->write_buf(mtd, this->data_poi, mtd->oobblock);
+                this->write_buf(mtd, this->data_poi, mtd->writesize);
                 break;
         default:
                 eccbytes = this->eccbytes;
@@ -1161,9 +1161,9 @@ int nand_do_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
         page = realpage & this->pagemask;
 
         /* Get raw starting column */
-        col = from & (mtd->oobblock - 1);
+        col = from & (mtd->writesize - 1);
 
-        end = mtd->oobblock;
+        end = mtd->writesize;
         ecc = this->eccsize;
         eccbytes = this->eccbytes;
 
@@ -1321,7 +1321,7 @@ int nand_do_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
                                 buf[read++] = data_poi[j];
                         this->pagebuf = realpage;
                 } else
-                        read += mtd->oobblock;
+                        read += mtd->writesize;
 
                 /* Apply delay or wait for ready/busy pin
                  * Do this before the AUTOINCR check, so no problems
@@ -1479,7 +1479,7 @@ int nand_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, s
         int chip = (int)(from >> this->chip_shift);
         int sndcmd = 1;
         int cnt = 0;
-        int pagesize = mtd->oobblock + mtd->oobsize;
+        int pagesize = mtd->writesize + mtd->oobsize;
         int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1;
 
         /* Do not allow reads past end of device */
@@ -1581,7 +1581,7 @@ static u_char *nand_prepare_oobbuf(struct mtd_info *mtd, u_char *fsbuf, struct n
         return this->oob_buf;
 }
 
-#define NOTALIGNED(x) (x & (mtd->oobblock-1)) != 0
+#define NOTALIGNED(x) (x & (mtd->writesize-1)) != 0
 
 /**
  * nand_write - [MTD Interface] compability function for nand_write_ecc
@@ -1694,7 +1694,7 @@ static int nand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
                 /* Next oob page */
                 oob += mtd->oobsize;
                 /* Update written bytes count */
-                written += mtd->oobblock;
+                written += mtd->writesize;
                 if (written == len)
                         goto cmp;
 
@@ -1805,7 +1805,7 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to, size_t len, size_t *r
 
         if (NAND_MUST_PAD(this)) {
                 /* Write out desired data */
-                this->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->oobblock, page & this->pagemask);
+                this->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize, page & this->pagemask);
                 /* prepad 0xff for partial programming */
                 this->write_buf(mtd, ffchars, column);
                 /* write data */
@@ -1814,7 +1814,7 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to, size_t len, size_t *r
                 this->write_buf(mtd, ffchars, mtd->oobsize - (len + column));
         } else {
                 /* Write out desired data */
-                this->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->oobblock + column, page & this->pagemask);
+                this->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize + column, page & this->pagemask);
                 /* write data */
                 this->write_buf(mtd, buf, len);
         }
@@ -1947,7 +1947,7 @@ static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, unsign
                 /* 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) {
                         /* Calc number of pages we can write
                          * out of this iov in one go */
                         numpages = (vecs->iov_len - len) >> this->page_shift;
@@ -1967,8 +1967,8 @@ static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, unsign
                                                       &oobbuf[oob], oobsel, i != numpages);
                                 if (ret)
                                         goto out;
-                                this->data_poi += mtd->oobblock;
-                                len += mtd->oobblock;
+                                this->data_poi += mtd->writesize;
+                                len += mtd->writesize;
                                 oob += mtd->oobsize;
                                 page++;
                         }
@@ -1983,7 +1983,7 @@ static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, unsign
                          * tuple until we have a full page to write
                          */
                         int cnt = 0;
-                        while (cnt < mtd->oobblock) {
+                        while (cnt < mtd->writesize) {
                                 if (vecs->iov_base != NULL && vecs->iov_len)
                                         this->data_buf[cnt++] = ((u_char *) vecs->iov_base)[len++];
                                 /* Check, if we have to switch to the next tuple */
@@ -2009,7 +2009,7 @@ static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, unsign
                 if (ret)
                         goto out;
 
-                written += mtd->oobblock * numpages;
+                written += mtd->writesize * numpages;
                 /* All done ? */
                 if (!count)
                         break;
@@ -2411,10 +2411,10 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
                         /* The 4th id byte is the important one */
                         extid = this->read_byte(mtd);
                         /* Calc pagesize */
-                        mtd->oobblock = 1024 << (extid & 0x3);
+                        mtd->writesize = 1024 << (extid & 0x3);
                         extid >>= 2;
                         /* Calc oobsize */
-                        mtd->oobsize = (8 << (extid & 0x01)) * (mtd->oobblock >> 9);
+                        mtd->oobsize = (8 << (extid & 0x01)) * (mtd->writesize >> 9);
                         extid >>= 2;
                         /* Calc blocksize. Blocksize is multiples of 64KiB */
                         mtd->erasesize = (64 * 1024) << (extid & 0x03);
@@ -2426,8 +2426,8 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
                         /* Old devices have this data hardcoded in the
                          * device id table */
                         mtd->erasesize = nand_flash_ids[i].erasesize;
-                        mtd->oobblock = nand_flash_ids[i].pagesize;
-                        mtd->oobsize = mtd->oobblock / 32;
+                        mtd->writesize = nand_flash_ids[i].pagesize;
+                        mtd->oobsize = mtd->writesize / 32;
                         busw = nand_flash_ids[i].options & NAND_BUSWIDTH_16;
                 }
 
@@ -2451,12 +2451,12 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
                 }
 
                 /* Calculate the address shift from the page size */
-                this->page_shift = ffs(mtd->oobblock) - 1;
+                this->page_shift = ffs(mtd->writesize) - 1;
                 this->bbt_erase_shift = this->phys_erase_shift = ffs(mtd->erasesize) - 1;
                 this->chip_shift = ffs(this->chipsize) - 1;
 
                 /* Set the bad block position */
-                this->badblockpos = mtd->oobblock > 512 ? NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
+                this->badblockpos = mtd->writesize > 512 ? NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
 
                 /* Get chip options, preserve non chip based options */
                 this->options &= ~NAND_CHIPOPTIONS_MSK;
@@ -2476,7 +2476,7 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
                         this->erase_cmd = single_erase_cmd;
 
                 /* Do not replace user supplied command function ! */
-                if (mtd->oobblock > 512 && this->cmdfunc == nand_command)
+                if (mtd->writesize > 512 && this->cmdfunc == nand_command)
                         this->cmdfunc = nand_command_lp;
 
                 printk(KERN_INFO "NAND device: Manufacturer ID:"
@@ -2519,7 +2519,7 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
 
         if (!this->data_buf) {
                 size_t len;
-                len = mtd->oobblock + mtd->oobsize;
+                len = mtd->writesize + mtd->oobsize;
                 this->data_buf = kmalloc(len, GFP_KERNEL);
                 if (!this->data_buf) {
                         if (this->options & NAND_OOBBUF_ALLOC)
@@ -2575,9 +2575,9 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
 
         switch (this->eccmode) {
         case NAND_ECC_HW12_2048:
-                if (mtd->oobblock < 2048) {
+                if (mtd->writesize < 2048) {
                         printk(KERN_WARNING "2048 byte HW ECC not possible on %d byte page size, fallback to SW ECC\n",
-                               mtd->oobblock);
+                               mtd->writesize);
                         this->eccmode = NAND_ECC_SOFT;
                         this->calculate_ecc = nand_calculate_ecc;
                         this->correct_data = nand_correct_data;
@@ -2588,7 +2588,7 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
         case NAND_ECC_HW3_512:
         case NAND_ECC_HW6_512:
         case NAND_ECC_HW8_512:
-                if (mtd->oobblock == 256) {
+                if (mtd->writesize == 256) {
                         printk(KERN_WARNING "512 byte HW ECC not possible on 256 Byte pagesize, fallback to SW ECC \n");
                         this->eccmode = NAND_ECC_SOFT;
                         this->calculate_ecc = nand_calculate_ecc;
@@ -2638,16 +2638,16 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
         /* Set the number of read / write steps for one page to ensure ECC generation */
         switch (this->eccmode) {
         case NAND_ECC_HW12_2048:
-                this->eccsteps = mtd->oobblock / 2048;
+                this->eccsteps = mtd->writesize / 2048;
                 break;
         case NAND_ECC_HW3_512:
         case NAND_ECC_HW6_512:
         case NAND_ECC_HW8_512:
-                this->eccsteps = mtd->oobblock / 512;
+                this->eccsteps = mtd->writesize / 512;
                 break;
         case NAND_ECC_HW3_256:
         case NAND_ECC_SOFT:
-                this->eccsteps = mtd->oobblock / 256;
+                this->eccsteps = mtd->writesize / 256;
                 break;
 
         case NAND_ECC_NONE: