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path: root/drivers/mtd/onenand/onenand_base.c
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Diffstat (limited to 'drivers/mtd/onenand/onenand_base.c')
-rw-r--r--drivers/mtd/onenand/onenand_base.c157
1 files changed, 136 insertions, 21 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 3d6f880cba9..f690c1916d1 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -304,16 +304,16 @@ static int onenand_wait(struct mtd_info *mtd, int state)
ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS);
if (ctrl & ONENAND_CTRL_ERROR) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_wait: controller error = 0x%04x\n", ctrl);
+ printk(KERN_ERR "onenand_wait: controller error = 0x%04x\n", ctrl);
if (ctrl & ONENAND_CTRL_LOCK)
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_wait: it's locked error.\n");
+ printk(KERN_ERR "onenand_wait: it's locked error.\n");
return ctrl;
}
if (interrupt & ONENAND_INT_READ) {
int ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS);
if (ecc) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_wait: ECC error = 0x%04x\n", ecc);
+ printk(KERN_ERR "onenand_wait: ECC error = 0x%04x\n", ecc);
if (ecc & ONENAND_ECC_2BIT_ALL) {
mtd->ecc_stats.failed++;
return ecc;
@@ -703,7 +703,7 @@ static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len,
/* Do not allow reads past end of device */
if ((from + len) > mtd->size) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_read: Attempt read beyond end of device\n");
+ printk(KERN_ERR "onenand_read: Attempt read beyond end of device\n");
*retlen = 0;
return -EINVAL;
}
@@ -834,7 +834,7 @@ static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int col
*
* OneNAND read out-of-band data from the spare area
*/
-int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
+static int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf, mtd_oob_mode_t mode)
{
struct onenand_chip *this = mtd->priv;
@@ -854,7 +854,7 @@ int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
column = from & (mtd->oobsize - 1);
if (unlikely(column >= oobsize)) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_read_oob: Attempted to start read outside oob\n");
+ printk(KERN_ERR "onenand_read_oob: Attempted to start read outside oob\n");
return -EINVAL;
}
@@ -862,7 +862,7 @@ int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
if (unlikely(from >= mtd->size ||
column + len > ((mtd->size >> this->page_shift) -
(from >> this->page_shift)) * oobsize)) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_read_oob: Attempted to read beyond end of device\n");
+ printk(KERN_ERR "onenand_read_oob: Attempted to read beyond end of device\n");
return -EINVAL;
}
@@ -888,7 +888,7 @@ int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen);
if (ret) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_read_oob: read failed = 0x%x\n", ret);
+ printk(KERN_ERR "onenand_read_oob: read failed = 0x%x\n", ret);
break;
}
@@ -936,6 +936,121 @@ static int onenand_read_oob(struct mtd_info *mtd, loff_t from,
&ops->oobretlen, ops->oobbuf, ops->mode);
}
+/**
+ * onenand_bbt_wait - [DEFAULT] wait until the command is done
+ * @param mtd MTD device structure
+ * @param state state to select the max. timeout value
+ *
+ * Wait for command done.
+ */
+static int onenand_bbt_wait(struct mtd_info *mtd, int state)
+{
+ struct onenand_chip *this = mtd->priv;
+ unsigned long timeout;
+ unsigned int interrupt;
+ unsigned int ctrl;
+
+ /* The 20 msec is enough */
+ timeout = jiffies + msecs_to_jiffies(20);
+ while (time_before(jiffies, timeout)) {
+ interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT);
+ if (interrupt & ONENAND_INT_MASTER)
+ break;
+ }
+ /* To get correct interrupt status in timeout case */
+ interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT);
+ ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS);
+
+ if (ctrl & ONENAND_CTRL_ERROR) {
+ printk(KERN_DEBUG "onenand_bbt_wait: controller error = 0x%04x\n", ctrl);
+ /* Initial bad block case */
+ if (ctrl & ONENAND_CTRL_LOAD)
+ return ONENAND_BBT_READ_ERROR;
+ return ONENAND_BBT_READ_FATAL_ERROR;
+ }
+
+ if (interrupt & ONENAND_INT_READ) {
+ int ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS);
+ if (ecc & ONENAND_ECC_2BIT_ALL)
+ return ONENAND_BBT_READ_ERROR;
+ } else {
+ printk(KERN_ERR "onenand_bbt_wait: read timeout!"
+ "ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt);
+ return ONENAND_BBT_READ_FATAL_ERROR;
+ }
+
+ return 0;
+}
+
+/**
+ * onenand_bbt_read_oob - [MTD Interface] OneNAND read out-of-band for bbt scan
+ * @param mtd MTD device structure
+ * @param from offset to read from
+ * @param @ops oob operation description structure
+ *
+ * OneNAND read out-of-band data from the spare area for bbt scan
+ */
+int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops)
+{
+ struct onenand_chip *this = mtd->priv;
+ int read = 0, thislen, column;
+ int ret = 0;
+ size_t len = ops->ooblen;
+ u_char *buf = ops->oobbuf;
+
+ DEBUG(MTD_DEBUG_LEVEL3, "onenand_bbt_read_oob: from = 0x%08x, len = %i\n", (unsigned int) from, len);
+
+ /* Initialize return value */
+ ops->oobretlen = 0;
+
+ /* Do not allow reads past end of device */
+ if (unlikely((from + len) > mtd->size)) {
+ printk(KERN_ERR "onenand_bbt_read_oob: Attempt read beyond end of device\n");
+ return ONENAND_BBT_READ_FATAL_ERROR;
+ }
+
+ /* Grab the lock and see if the device is available */
+ onenand_get_device(mtd, FL_READING);
+
+ column = from & (mtd->oobsize - 1);
+
+ while (read < len) {
+ cond_resched();
+
+ thislen = mtd->oobsize - column;
+ thislen = min_t(int, thislen, len);
+
+ this->command(mtd, ONENAND_CMD_READOOB, from, mtd->oobsize);
+
+ onenand_update_bufferram(mtd, from, 0);
+
+ ret = onenand_bbt_wait(mtd, FL_READING);
+ if (ret)
+ break;
+
+ this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen);
+ read += thislen;
+ if (read == len)
+ break;
+
+ buf += thislen;
+
+ /* Read more? */
+ if (read < len) {
+ /* Update Page size */
+ from += mtd->writesize;
+ column = 0;
+ }
+ }
+
+ /* Deselect and wake up anyone waiting on the device */
+ onenand_release_device(mtd);
+
+ ops->oobretlen = read;
+ return ret;
+}
+
#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
/**
* onenand_verify_oob - [GENERIC] verify the oob contents after a write
@@ -1040,13 +1155,13 @@ static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len,
/* Do not allow writes past end of device */
if (unlikely((to + len) > mtd->size)) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: Attempt write to past end of device\n");
+ printk(KERN_ERR "onenand_write: Attempt write to past end of device\n");
return -EINVAL;
}
/* Reject writes, which are not page aligned */
if (unlikely(NOTALIGNED(to)) || unlikely(NOTALIGNED(len))) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: Attempt to write not page aligned data\n");
+ printk(KERN_ERR "onenand_write: Attempt to write not page aligned data\n");
return -EINVAL;
}
@@ -1083,14 +1198,14 @@ static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len,
onenand_update_bufferram(mtd, to, !ret && !subpage);
if (ret) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: write filaed %d\n", ret);
+ printk(KERN_ERR "onenand_write: write filaed %d\n", ret);
break;
}
/* Only check verify write turn on */
ret = onenand_verify(mtd, (u_char *) wbuf, to, thislen);
if (ret) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: verify failed %d\n", ret);
+ printk(KERN_ERR "onenand_write: verify failed %d\n", ret);
break;
}
@@ -1180,13 +1295,13 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
column = to & (mtd->oobsize - 1);
if (unlikely(column >= oobsize)) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_oob: Attempted to start write outside oob\n");
+ printk(KERN_ERR "onenand_write_oob: Attempted to start write outside oob\n");
return -EINVAL;
}
/* For compatibility with NAND: Do not allow write past end of page */
if (column + len > oobsize) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_oob: "
+ printk(KERN_ERR "onenand_write_oob: "
"Attempt to write past end of page\n");
return -EINVAL;
}
@@ -1195,7 +1310,7 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
if (unlikely(to >= mtd->size ||
column + len > ((mtd->size >> this->page_shift) -
(to >> this->page_shift)) * oobsize)) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_oob: Attempted to write past end of device\n");
+ printk(KERN_ERR "onenand_write_oob: Attempted to write past end of device\n");
return -EINVAL;
}
@@ -1225,13 +1340,13 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
ret = this->wait(mtd, FL_WRITING);
if (ret) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_oob: write failed %d\n", ret);
+ printk(KERN_ERR "onenand_write_oob: write failed %d\n", ret);
break;
}
ret = onenand_verify_oob(mtd, this->page_buf, to);
if (ret) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_oob: verify failed %d\n", ret);
+ printk(KERN_ERR "onenand_write_oob: verify failed %d\n", ret);
break;
}
@@ -1314,19 +1429,19 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
/* Start address must align on block boundary */
if (unlikely(instr->addr & (block_size - 1))) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_erase: Unaligned address\n");
+ printk(KERN_ERR "onenand_erase: Unaligned address\n");
return -EINVAL;
}
/* Length must align on block boundary */
if (unlikely(instr->len & (block_size - 1))) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_erase: Length not block aligned\n");
+ printk(KERN_ERR "onenand_erase: Length not block aligned\n");
return -EINVAL;
}
/* Do not allow erase past end of device */
if (unlikely((instr->len + instr->addr) > mtd->size)) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_erase: Erase past end of device\n");
+ printk(KERN_ERR "onenand_erase: Erase past end of device\n");
return -EINVAL;
}
@@ -1356,7 +1471,7 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
ret = this->wait(mtd, FL_ERASING);
/* Check, if it is write protected */
if (ret) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_erase: Failed erase, block %d\n", (unsigned) (addr >> this->erase_shift));
+ printk(KERN_ERR "onenand_erase: Failed erase, block %d\n", (unsigned) (addr >> this->erase_shift));
instr->state = MTD_ERASE_FAILED;
instr->fail_addr = addr;
goto erase_exit;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-26 06:54:03 +0000