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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.c235
1 files changed, 111 insertions, 124 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index af28bb3ae7cf..a4b029a417f0 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -68,21 +68,33 @@ MODULE_PARM_DESC(otp, "Corresponding behaviour of OneNAND in OTP"
* flexonenand_oob_128 - oob info for Flex-Onenand with 4KB page
* For now, we expose only 64 out of 80 ecc bytes
*/
-static struct nand_ecclayout flexonenand_oob_128 = {
- .eccbytes = 64,
- .eccpos = {
- 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
- 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
- 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
- 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
- 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
- 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
- 102, 103, 104, 105
- },
- .oobfree = {
- {2, 4}, {18, 4}, {34, 4}, {50, 4},
- {66, 4}, {82, 4}, {98, 4}, {114, 4}
- }
+static int flexonenand_ooblayout_ecc(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ if (section > 7)
+ return -ERANGE;
+
+ oobregion->offset = (section * 16) + 6;
+ oobregion->length = 10;
+
+ return 0;
+}
+
+static int flexonenand_ooblayout_free(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ if (section > 7)
+ return -ERANGE;
+
+ oobregion->offset = (section * 16) + 2;
+ oobregion->length = 4;
+
+ return 0;
+}
+
+static const struct mtd_ooblayout_ops flexonenand_ooblayout_ops = {
+ .ecc = flexonenand_ooblayout_ecc,
+ .free = flexonenand_ooblayout_free,
};
/*
@@ -91,56 +103,77 @@ static struct nand_ecclayout flexonenand_oob_128 = {
* Based on specification:
* 4Gb M-die OneNAND Flash (KFM4G16Q4M, KFN8G16Q4M). Rev. 1.3, Apr. 2010
*
- * For eccpos we expose only 64 bytes out of 72 (see struct nand_ecclayout)
- *
- * oobfree uses the spare area fields marked as
- * "Managed by internal ECC logic for Logical Sector Number area"
*/
-static struct nand_ecclayout onenand_oob_128 = {
- .eccbytes = 64,
- .eccpos = {
- 7, 8, 9, 10, 11, 12, 13, 14, 15,
- 23, 24, 25, 26, 27, 28, 29, 30, 31,
- 39, 40, 41, 42, 43, 44, 45, 46, 47,
- 55, 56, 57, 58, 59, 60, 61, 62, 63,
- 71, 72, 73, 74, 75, 76, 77, 78, 79,
- 87, 88, 89, 90, 91, 92, 93, 94, 95,
- 103, 104, 105, 106, 107, 108, 109, 110, 111,
- 119
- },
- .oobfree = {
- {2, 3}, {18, 3}, {34, 3}, {50, 3},
- {66, 3}, {82, 3}, {98, 3}, {114, 3}
- }
+static int onenand_ooblayout_128_ecc(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ if (section > 7)
+ return -ERANGE;
+
+ oobregion->offset = (section * 16) + 7;
+ oobregion->length = 9;
+
+ return 0;
+}
+
+static int onenand_ooblayout_128_free(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ if (section >= 8)
+ return -ERANGE;
+
+ /*
+ * free bytes are using the spare area fields marked as
+ * "Managed by internal ECC logic for Logical Sector Number area"
+ */
+ oobregion->offset = (section * 16) + 2;
+ oobregion->length = 3;
+
+ return 0;
+}
+
+static const struct mtd_ooblayout_ops onenand_oob_128_ooblayout_ops = {
+ .ecc = onenand_ooblayout_128_ecc,
+ .free = onenand_ooblayout_128_free,
};
/**
- * onenand_oob_64 - oob info for large (2KB) page
+ * onenand_oob_32_64 - oob info for large (2KB) page
*/
-static struct nand_ecclayout onenand_oob_64 = {
- .eccbytes = 20,
- .eccpos = {
- 8, 9, 10, 11, 12,
- 24, 25, 26, 27, 28,
- 40, 41, 42, 43, 44,
- 56, 57, 58, 59, 60,
- },
- .oobfree = {
- {2, 3}, {14, 2}, {18, 3}, {30, 2},
- {34, 3}, {46, 2}, {50, 3}, {62, 2}
+static int onenand_ooblayout_32_64_ecc(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ if (section > 3)
+ return -ERANGE;
+
+ oobregion->offset = (section * 16) + 8;
+ oobregion->length = 5;
+
+ return 0;
+}
+
+static int onenand_ooblayout_32_64_free(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ int sections = (mtd->oobsize / 32) * 2;
+
+ if (section >= sections)
+ return -ERANGE;
+
+ if (section & 1) {
+ oobregion->offset = ((section - 1) * 16) + 14;
+ oobregion->length = 2;
+ } else {
+ oobregion->offset = (section * 16) + 2;
+ oobregion->length = 3;
}
-};
-/**
- * onenand_oob_32 - oob info for middle (1KB) page
- */
-static struct nand_ecclayout onenand_oob_32 = {
- .eccbytes = 10,
- .eccpos = {
- 8, 9, 10, 11, 12,
- 24, 25, 26, 27, 28,
- },
- .oobfree = { {2, 3}, {14, 2}, {18, 3}, {30, 2} }
+ return 0;
+}
+
+static const struct mtd_ooblayout_ops onenand_oob_32_64_ooblayout_ops = {
+ .ecc = onenand_ooblayout_32_64_ecc,
+ .free = onenand_ooblayout_32_64_free,
};
static const unsigned char ffchars[] = {
@@ -1024,34 +1057,15 @@ static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int col
int thislen)
{
struct onenand_chip *this = mtd->priv;
- struct nand_oobfree *free;
- int readcol = column;
- int readend = column + thislen;
- int lastgap = 0;
- unsigned int i;
- uint8_t *oob_buf = this->oob_buf;
-
- free = this->ecclayout->oobfree;
- for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
- if (readcol >= lastgap)
- readcol += free->offset - lastgap;
- if (readend >= lastgap)
- readend += free->offset - lastgap;
- lastgap = free->offset + free->length;
- }
- this->read_bufferram(mtd, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize);
- free = this->ecclayout->oobfree;
- for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
- int free_end = free->offset + free->length;
- if (free->offset < readend && free_end > readcol) {
- int st = max_t(int,free->offset,readcol);
- int ed = min_t(int,free_end,readend);
- int n = ed - st;
- memcpy(buf, oob_buf + st, n);
- buf += n;
- } else if (column == 0)
- break;
- }
+ int ret;
+
+ this->read_bufferram(mtd, ONENAND_SPARERAM, this->oob_buf, 0,
+ mtd->oobsize);
+ ret = mtd_ooblayout_get_databytes(mtd, buf, this->oob_buf,
+ column, thislen);
+ if (ret)
+ return ret;
+
return 0;
}
@@ -1808,34 +1822,7 @@ static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf,
const u_char *buf, int column, int thislen)
{
- struct onenand_chip *this = mtd->priv;
- struct nand_oobfree *free;
- int writecol = column;
- int writeend = column + thislen;
- int lastgap = 0;
- unsigned int i;
-
- free = this->ecclayout->oobfree;
- for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
- if (writecol >= lastgap)
- writecol += free->offset - lastgap;
- if (writeend >= lastgap)
- writeend += free->offset - lastgap;
- lastgap = free->offset + free->length;
- }
- free = this->ecclayout->oobfree;
- for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
- int free_end = free->offset + free->length;
- if (free->offset < writeend && free_end > writecol) {
- int st = max_t(int,free->offset,writecol);
- int ed = min_t(int,free_end,writeend);
- int n = ed - st;
- memcpy(oob_buf + st, buf, n);
- buf += n;
- } else if (column == 0)
- break;
- }
- return 0;
+ return mtd_ooblayout_set_databytes(mtd, buf, oob_buf, column, thislen);
}
/**
@@ -4003,22 +3990,22 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
switch (mtd->oobsize) {
case 128:
if (FLEXONENAND(this)) {
- this->ecclayout = &flexonenand_oob_128;
+ mtd_set_ooblayout(mtd, &flexonenand_ooblayout_ops);
mtd->subpage_sft = 0;
} else {
- this->ecclayout = &onenand_oob_128;
+ mtd_set_ooblayout(mtd, &onenand_oob_128_ooblayout_ops);
mtd->subpage_sft = 2;
}
if (ONENAND_IS_NOP_1(this))
mtd->subpage_sft = 0;
break;
case 64:
- this->ecclayout = &onenand_oob_64;
+ mtd_set_ooblayout(mtd, &onenand_oob_32_64_ooblayout_ops);
mtd->subpage_sft = 2;
break;
case 32:
- this->ecclayout = &onenand_oob_32;
+ mtd_set_ooblayout(mtd, &onenand_oob_32_64_ooblayout_ops);
mtd->subpage_sft = 1;
break;
@@ -4027,7 +4014,7 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
__func__, mtd->oobsize);
mtd->subpage_sft = 0;
/* To prevent kernel oops */
- this->ecclayout = &onenand_oob_32;
+ mtd_set_ooblayout(mtd, &onenand_oob_32_64_ooblayout_ops);
break;
}
@@ -4037,12 +4024,12 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
* The number of bytes available for a client to place data into
* the out of band area
*/
- mtd->oobavail = 0;
- for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES &&
- this->ecclayout->oobfree[i].length; i++)
- mtd->oobavail += this->ecclayout->oobfree[i].length;
+ ret = mtd_ooblayout_count_freebytes(mtd);
+ if (ret < 0)
+ ret = 0;
+
+ mtd->oobavail = ret;
- mtd->ecclayout = this->ecclayout;
mtd->ecc_strength = 1;
/* Fill in remaining MTD driver data */
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-01 12:13:55 +0300