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path: root/drivers/mtd/mtdpart.c
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Diffstat (limited to 'drivers/mtd/mtdpart.c')
-rw-r--r--drivers/mtd/mtdpart.c171
1 files changed, 55 insertions, 116 deletions
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 99395911d26f..77a7123a5c56 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -51,16 +51,21 @@ static int part_read (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
struct mtd_part *part = PART(mtd);
+ int res;
+
if (from >= mtd->size)
len = 0;
else if (from + len > mtd->size)
len = mtd->size - from;
- if (part->master->read_ecc == NULL)
- return part->master->read (part->master, from + part->offset,
- len, retlen, buf);
- else
- return part->master->read_ecc (part->master, from + part->offset,
- len, retlen, buf, NULL, &mtd->oobinfo);
+ res = part->master->read (part->master, from + part->offset,
+ len, retlen, buf);
+ if (unlikely(res)) {
+ if (res == -EUCLEAN)
+ mtd->ecc_stats.corrected++;
+ if (res == -EBADMSG)
+ mtd->ecc_stats.failed++;
+ }
+ return res;
}
static int part_point (struct mtd_info *mtd, loff_t from, size_t len,
@@ -74,6 +79,7 @@ static int part_point (struct mtd_info *mtd, loff_t from, size_t len,
return part->master->point (part->master, from + part->offset,
len, retlen, buf);
}
+
static void part_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_t len)
{
struct mtd_part *part = PART(mtd);
@@ -81,31 +87,25 @@ static void part_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_
part->master->unpoint (part->master, addr, from + part->offset, len);
}
-
-static int part_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel)
+static int part_read_oob(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops)
{
struct mtd_part *part = PART(mtd);
- if (oobsel == NULL)
- oobsel = &mtd->oobinfo;
- if (from >= mtd->size)
- len = 0;
- else if (from + len > mtd->size)
- len = mtd->size - from;
- return part->master->read_ecc (part->master, from + part->offset,
- len, retlen, buf, eccbuf, oobsel);
-}
+ int res;
-static int part_read_oob (struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf)
-{
- struct mtd_part *part = PART(mtd);
if (from >= mtd->size)
- len = 0;
- else if (from + len > mtd->size)
- len = mtd->size - from;
- return part->master->read_oob (part->master, from + part->offset,
- len, retlen, buf);
+ return -EINVAL;
+ if (from + ops->len > mtd->size)
+ return -EINVAL;
+ res = part->master->read_oob(part->master, from + part->offset, ops);
+
+ if (unlikely(res)) {
+ if (res == -EUCLEAN)
+ mtd->ecc_stats.corrected++;
+ if (res == -EBADMSG)
+ mtd->ecc_stats.failed++;
+ }
+ return res;
}
static int part_read_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
@@ -148,44 +148,23 @@ static int part_write (struct mtd_info *mtd, loff_t to, size_t len,
len = 0;
else if (to + len > mtd->size)
len = mtd->size - to;
- if (part->master->write_ecc == NULL)
- return part->master->write (part->master, to + part->offset,
- len, retlen, buf);
- else
- return part->master->write_ecc (part->master, to + part->offset,
- len, retlen, buf, NULL, &mtd->oobinfo);
-
+ return part->master->write (part->master, to + part->offset,
+ len, retlen, buf);
}
-static int part_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf,
- u_char *eccbuf, struct nand_oobinfo *oobsel)
+static int part_write_oob(struct mtd_info *mtd, loff_t to,
+ struct mtd_oob_ops *ops)
{
struct mtd_part *part = PART(mtd);
- if (!(mtd->flags & MTD_WRITEABLE))
- return -EROFS;
- if (oobsel == NULL)
- oobsel = &mtd->oobinfo;
- if (to >= mtd->size)
- len = 0;
- else if (to + len > mtd->size)
- len = mtd->size - to;
- return part->master->write_ecc (part->master, to + part->offset,
- len, retlen, buf, eccbuf, oobsel);
-}
-static int part_write_oob (struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf)
-{
- struct mtd_part *part = PART(mtd);
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
+
if (to >= mtd->size)
- len = 0;
- else if (to + len > mtd->size)
- len = mtd->size - to;
- return part->master->write_oob (part->master, to + part->offset,
- len, retlen, buf);
+ return -EINVAL;
+ if (to + ops->len > mtd->size)
+ return -EINVAL;
+ return part->master->write_oob(part->master, to + part->offset, ops);
}
static int part_write_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
@@ -208,52 +187,8 @@ static int part_writev (struct mtd_info *mtd, const struct kvec *vecs,
struct mtd_part *part = PART(mtd);
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
- if (part->master->writev_ecc == NULL)
- return part->master->writev (part->master, vecs, count,
+ return part->master->writev (part->master, vecs, count,
to + part->offset, retlen);
- else
- return part->master->writev_ecc (part->master, vecs, count,
- to + part->offset, retlen,
- NULL, &mtd->oobinfo);
-}
-
-static int part_readv (struct mtd_info *mtd, struct kvec *vecs,
- unsigned long count, loff_t from, size_t *retlen)
-{
- struct mtd_part *part = PART(mtd);
- if (part->master->readv_ecc == NULL)
- return part->master->readv (part->master, vecs, count,
- from + part->offset, retlen);
- else
- return part->master->readv_ecc (part->master, vecs, count,
- from + part->offset, retlen,
- NULL, &mtd->oobinfo);
-}
-
-static int part_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs,
- unsigned long count, loff_t to, size_t *retlen,
- u_char *eccbuf, struct nand_oobinfo *oobsel)
-{
- struct mtd_part *part = PART(mtd);
- if (!(mtd->flags & MTD_WRITEABLE))
- return -EROFS;
- if (oobsel == NULL)
- oobsel = &mtd->oobinfo;
- return part->master->writev_ecc (part->master, vecs, count,
- to + part->offset, retlen,
- eccbuf, oobsel);
-}
-
-static int part_readv_ecc (struct mtd_info *mtd, struct kvec *vecs,
- unsigned long count, loff_t from, size_t *retlen,
- u_char *eccbuf, struct nand_oobinfo *oobsel)
-{
- struct mtd_part *part = PART(mtd);
- if (oobsel == NULL)
- oobsel = &mtd->oobinfo;
- return part->master->readv_ecc (part->master, vecs, count,
- from + part->offset, retlen,
- eccbuf, oobsel);
}
static int part_erase (struct mtd_info *mtd, struct erase_info *instr)
@@ -329,12 +264,17 @@ static int part_block_isbad (struct mtd_info *mtd, loff_t ofs)
static int part_block_markbad (struct mtd_info *mtd, loff_t ofs)
{
struct mtd_part *part = PART(mtd);
+ int res;
+
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
if (ofs >= mtd->size)
return -EINVAL;
ofs += part->offset;
- return part->master->block_markbad(part->master, ofs);
+ res = part->master->block_markbad(part->master, ofs);
+ if (!res)
+ mtd->ecc_stats.badblocks++;
+ return res;
}
/*
@@ -398,7 +338,7 @@ int add_mtd_partitions(struct mtd_info *master,
slave->mtd.type = master->type;
slave->mtd.flags = master->flags & ~parts[i].mask_flags;
slave->mtd.size = parts[i].size;
- slave->mtd.oobblock = master->oobblock;
+ slave->mtd.writesize = master->writesize;
slave->mtd.oobsize = master->oobsize;
slave->mtd.ecctype = master->ecctype;
slave->mtd.eccsize = master->eccsize;
@@ -415,10 +355,6 @@ int add_mtd_partitions(struct mtd_info *master,
slave->mtd.unpoint = part_unpoint;
}
- if (master->read_ecc)
- slave->mtd.read_ecc = part_read_ecc;
- if (master->write_ecc)
- slave->mtd.write_ecc = part_write_ecc;
if (master->read_oob)
slave->mtd.read_oob = part_read_oob;
if (master->write_oob)
@@ -443,12 +379,6 @@ int add_mtd_partitions(struct mtd_info *master,
}
if (master->writev)
slave->mtd.writev = part_writev;
- if (master->readv)
- slave->mtd.readv = part_readv;
- if (master->writev_ecc)
- slave->mtd.writev_ecc = part_writev_ecc;
- if (master->readv_ecc)
- slave->mtd.readv_ecc = part_readv_ecc;
if (master->lock)
slave->mtd.lock = part_lock;
if (master->unlock)
@@ -528,8 +458,17 @@ int add_mtd_partitions(struct mtd_info *master,
parts[i].name);
}
- /* copy oobinfo from master */
- memcpy(&slave->mtd.oobinfo, &master->oobinfo, sizeof(slave->mtd.oobinfo));
+ slave->mtd.ecclayout = master->ecclayout;
+ if (master->block_isbad) {
+ uint32_t offs = 0;
+
+ while(offs < slave->mtd.size) {
+ if (master->block_isbad(master,
+ offs + slave->offset))
+ slave->mtd.ecc_stats.badblocks++;
+ offs += slave->mtd.erasesize;
+ }
+ }
if(parts[i].mtdp)
{ /* store the object pointer (caller may or may not register it */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.