@@ -748,6 +748,8 @@ static int nand_wait(struct mtd_info *mt
* @mtd: mtd info structure
* @chip: nand chip info structure
* @buf: buffer to store read data
+ *
+ * Not for syndrome calculating ecc controllers, which use a special oob layout
*/
static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
uint8_t *buf)
@@ -758,6 +760,48 @@ static int nand_read_page_raw(struct mtd
}
/**
+ * nand_read_page_raw_syndrome - [Intern] read raw page data without ecc
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @buf: buffer to store read data
+ *
+ * We need a special oob layout and handling even when ECC isn't used.
+ */
+static int nand_read_page_raw_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *buf)
+{
+ int eccsize = chip->ecc.size;
+ int eccbytes = chip->ecc.bytes;
+ uint8_t *oob = chip->oob_poi;
+ int temp;
+
+ temp = chip->ecc.steps;
+ do {
+ chip->read_buf(mtd, buf, eccsize);
+ buf += eccsize;
+
+ if (chip->ecc.prepad) {
+ chip->read_buf(mtd, oob, chip->ecc.prepad);
+ oob += chip->ecc.prepad;
+ }
+
+ chip->read_buf(mtd, oob, eccbytes);
+ oob += eccbytes;
+
+ if (chip->ecc.postpad) {
+ chip->read_buf(mtd, oob, chip->ecc.postpad);
+ oob += chip->ecc.postpad;
+ }
+ } while (--temp);
+
+ temp = mtd->oobsize - (oob - chip->oob_poi);
+ if (temp)
+ chip->read_buf(mtd, oob, temp);
+
+ return 0;
+}
+
+/**
* nand_read_page_swecc - [REPLACABLE] software ecc based page read function
* @mtd: mtd info structure
* @chip: nand chip info structure
@@ -1482,6 +1526,8 @@ static int nand_read_oob(struct mtd_info
* @mtd: mtd info structure
* @chip: nand chip info structure
* @buf: data buffer
+ *
+ * Not for syndrome calculating ecc controllers, which use a special oob layout
*/
static void nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
const uint8_t *buf)
@@ -1491,6 +1537,45 @@ static void nand_write_page_raw(struct m
}
/**
+ * nand_write_page_raw_syndrome - [Intern] raw page write function
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @buf: data buffer
+ *
+ * We need a special oob layout and handling even when ECC isn't used.
+ */
+static void nand_write_page_raw_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+ const uint8_t *buf)
+{
+ int eccsize = chip->ecc.size;
+ int eccbytes = chip->ecc.bytes;
+ uint8_t *oob = chip->oob_poi;
+ int temp;
+
+ temp = chip->ecc.steps;
+ do {
+ chip->write_buf(mtd, buf, eccsize);
+ buf += eccsize;
+
+ if (chip->ecc.prepad) {
+ chip->write_buf(mtd, oob, chip->ecc.prepad);
+ oob += chip->ecc.prepad;
+ }
+
+ chip->read_buf(mtd, oob, eccbytes);
+ oob += eccbytes;
+
+ if (chip->ecc.postpad) {
+ chip->write_buf(mtd, oob, chip->ecc.postpad);
+ oob += chip->ecc.postpad;
+ }
+ } while (--temp);
+
+ temp = mtd->oobsize - (oob - chip->oob_poi);
+ if (temp)
+ chip->write_buf(mtd, oob, temp);
+}
+/**
* nand_write_page_swecc - [REPLACABLE] software ecc based page write function
* @mtd: mtd info structure
* @chip: nand chip info structure
@@ -2564,10 +2649,6 @@ int nand_scan_tail(struct mtd_info *mtd)
* check ECC mode, default to software if 3byte/512byte hardware ECC is
* selected and we have 256 byte pagesize fallback to software ECC
*/
- if (!chip->ecc.read_page_raw)
- chip->ecc.read_page_raw = nand_read_page_raw;
- if (!chip->ecc.write_page_raw)
- chip->ecc.write_page_raw = nand_write_page_raw;
switch (chip->ecc.mode) {
#ifdef CONFIG_NAND_FLASH_HW_ECC
@@ -2583,6 +2664,10 @@ int nand_scan_tail(struct mtd_info *mtd)
chip->ecc.read_page = nand_read_page_hwecc;
if (!chip->ecc.write_page)
chip->ecc.write_page = nand_write_page_hwecc;
+ if (!chip->ecc.read_page_raw)
+ chip->ecc.read_page_raw = nand_read_page_raw;
+ if (!chip->ecc.write_page_raw)
+ chip->ecc.write_page_raw = nand_write_page_raw;
if (!chip->ecc.read_oob)
chip->ecc.read_oob = nand_read_oob_std;
if (!chip->ecc.write_oob)
@@ -2604,6 +2689,10 @@ int nand_scan_tail(struct mtd_info *mtd)
chip->ecc.read_page = nand_read_page_syndrome;
if (!chip->ecc.write_page)
chip->ecc.write_page = nand_write_page_syndrome;
+ if (!chip->ecc.read_page_raw)
+ chip->ecc.read_page_raw = nand_read_page_raw_syndrome;
+ if (!chip->ecc.write_page_raw)
+ chip->ecc.write_page_raw = nand_write_page_raw_syndrome;
if (!chip->ecc.read_oob)
chip->ecc.read_oob = nand_read_oob_syndrome;
if (!chip->ecc.write_oob)
@@ -2622,6 +2711,8 @@ int nand_scan_tail(struct mtd_info *mtd)
chip->ecc.read_page = nand_read_page_swecc;
chip->ecc.read_subpage = nand_read_subpage;
chip->ecc.write_page = nand_write_page_swecc;
+ chip->ecc.read_page_raw = nand_read_page_raw;
+ chip->ecc.write_page_raw = nand_write_page_raw;
chip->ecc.read_oob = nand_read_oob_std;
chip->ecc.write_oob = nand_write_oob_std;
chip->ecc.size = 256;
@@ -2634,6 +2725,8 @@ int nand_scan_tail(struct mtd_info *mtd)
chip->ecc.read_page = nand_read_page_raw;
chip->ecc.write_page = nand_write_page_raw;
chip->ecc.read_oob = nand_read_oob_std;
+ chip->ecc.read_page_raw = nand_read_page_raw;
+ chip->ecc.write_page_raw = nand_write_page_raw;
chip->ecc.write_oob = nand_write_oob_std;
chip->ecc.size = mtd->writesize;
chip->ecc.bytes = 0;