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path: root/drivers/mtd/devices/doc2000.c
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Diffstat (limited to 'drivers/mtd/devices/doc2000.c')
-rw-r--r--drivers/mtd/devices/doc2000.c129
1 files changed, 29 insertions, 100 deletions
diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c
index 23e7a5c7d2c1..c54e40464d82 100644
--- a/drivers/mtd/devices/doc2000.c
+++ b/drivers/mtd/devices/doc2000.c
@@ -59,13 +59,10 @@ static int doc_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 doc_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 doc_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);
-static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
- size_t *retlen, u_char *buf);
-static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
- size_t *retlen, const u_char *buf);
+static int doc_read_oob(struct mtd_info *mtd, loff_t ofs,
+ struct mtd_oob_ops *ops);
+static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
+ struct mtd_oob_ops *ops);
static int doc_write_oob_nolock(struct mtd_info *mtd, loff_t ofs, size_t len,
size_t *retlen, const u_char *buf);
static int doc_erase (struct mtd_info *mtd, struct erase_info *instr);
@@ -517,16 +514,9 @@ static int DoC2k_is_alias(struct DiskOnChip *doc1, struct DiskOnChip *doc2)
return retval;
}
-static const char im_name[] = "DoC2k_init";
-
-/* This routine is made available to other mtd code via
- * inter_module_register. It must only be accessed through
- * inter_module_get which will bump the use count of this module. The
- * addresses passed back in mtd are valid as long as the use count of
- * this module is non-zero, i.e. between inter_module_get and
- * inter_module_put. Keith Owens <kaos@ocs.com.au> 29 Oct 2000.
- */
-static void DoC2k_init(struct mtd_info *mtd)
+/* This routine is found from the docprobe code by symbol_get(),
+ * which will bump the use count of this module. */
+void DoC2k_init(struct mtd_info *mtd)
{
struct DiskOnChip *this = mtd->priv;
struct DiskOnChip *old = NULL;
@@ -586,7 +576,7 @@ static void DoC2k_init(struct mtd_info *mtd)
mtd->ecctype = MTD_ECC_RS_DiskOnChip;
mtd->size = 0;
mtd->erasesize = 0;
- mtd->oobblock = 512;
+ mtd->writesize = 512;
mtd->oobsize = 16;
mtd->owner = THIS_MODULE;
mtd->erase = doc_erase;
@@ -594,9 +584,6 @@ static void DoC2k_init(struct mtd_info *mtd)
mtd->unpoint = NULL;
mtd->read = doc_read;
mtd->write = doc_write;
- mtd->read_ecc = doc_read_ecc;
- mtd->write_ecc = doc_write_ecc;
- mtd->writev_ecc = doc_writev_ecc;
mtd->read_oob = doc_read_oob;
mtd->write_oob = doc_write_oob;
mtd->sync = NULL;
@@ -623,6 +610,7 @@ static void DoC2k_init(struct mtd_info *mtd)
return;
}
}
+EXPORT_SYMBOL_GPL(DoC2k_init);
static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t * retlen, u_char * buf)
@@ -971,72 +959,18 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
return 0;
}
-static int doc_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)
-{
- static char static_buf[512];
- static DEFINE_MUTEX(writev_buf_mutex);
-
- size_t totretlen = 0;
- size_t thisvecofs = 0;
- int ret= 0;
-
- mutex_lock(&writev_buf_mutex);
-
- while(count) {
- size_t thislen, thisretlen;
- unsigned char *buf;
-
- buf = vecs->iov_base + thisvecofs;
- thislen = vecs->iov_len - thisvecofs;
-
-
- if (thislen >= 512) {
- thislen = thislen & ~(512-1);
- thisvecofs += thislen;
- } else {
- /* Not enough to fill a page. Copy into buf */
- memcpy(static_buf, buf, thislen);
- buf = &static_buf[thislen];
-
- while(count && thislen < 512) {
- vecs++;
- count--;
- thisvecofs = min((512-thislen), vecs->iov_len);
- memcpy(buf, vecs->iov_base, thisvecofs);
- thislen += thisvecofs;
- buf += thisvecofs;
- }
- buf = static_buf;
- }
- if (count && thisvecofs == vecs->iov_len) {
- thisvecofs = 0;
- vecs++;
- count--;
- }
- ret = doc_write_ecc(mtd, to, thislen, &thisretlen, buf, eccbuf, oobsel);
-
- totretlen += thisretlen;
-
- if (ret || thisretlen != thislen)
- break;
-
- to += thislen;
- }
-
- mutex_unlock(&writev_buf_mutex);
- *retlen = totretlen;
- return ret;
-}
-
-
-static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
- size_t * retlen, u_char * buf)
+static int doc_read_oob(struct mtd_info *mtd, loff_t ofs,
+ struct mtd_oob_ops *ops)
{
struct DiskOnChip *this = mtd->priv;
int len256 = 0, ret;
struct Nand *mychip;
+ uint8_t *buf = ops->oobbuf;
+ size_t len = ops->len;
+
+ BUG_ON(ops->mode != MTD_OOB_PLACE);
+
+ ofs += ops->ooboffs;
mutex_lock(&this->lock);
@@ -1077,7 +1011,7 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
DoC_ReadBuf(this, &buf[len256], len - len256);
- *retlen = len;
+ ops->retlen = len;
/* Reading the full OOB data drops us off of the end of the page,
* causing the flash device to go into busy mode, so we need
* to wait until ready 11.4.1 and Toshiba TC58256FT docs */
@@ -1192,17 +1126,20 @@ static int doc_write_oob_nolock(struct mtd_info *mtd, loff_t ofs, size_t len,
}
-static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
- size_t * retlen, const u_char * buf)
+static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
+ struct mtd_oob_ops *ops)
{
- struct DiskOnChip *this = mtd->priv;
- int ret;
+ struct DiskOnChip *this = mtd->priv;
+ int ret;
- mutex_lock(&this->lock);
- ret = doc_write_oob_nolock(mtd, ofs, len, retlen, buf);
+ BUG_ON(ops->mode != MTD_OOB_PLACE);
+
+ mutex_lock(&this->lock);
+ ret = doc_write_oob_nolock(mtd, ofs + ops->ooboffs, ops->len,
+ &ops->retlen, ops->oobbuf);
- mutex_unlock(&this->lock);
- return ret;
+ mutex_unlock(&this->lock);
+ return ret;
}
static int doc_erase(struct mtd_info *mtd, struct erase_info *instr)
@@ -1277,12 +1214,6 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *instr)
*
****************************************************************************/
-static int __init init_doc2000(void)
-{
- inter_module_register(im_name, THIS_MODULE, &DoC2k_init);
- return 0;
-}
-
static void __exit cleanup_doc2000(void)
{
struct mtd_info *mtd;
@@ -1298,11 +1229,9 @@ static void __exit cleanup_doc2000(void)
kfree(this->chips);
kfree(mtd);
}
- inter_module_unregister(im_name);
}
module_exit(cleanup_doc2000);
-module_init(init_doc2000);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org> et al.");
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-28 23:35:13 +0300