[MTD] Rework the out of band handling completely

[safe/jmp/linux-2.6] / drivers / mtd / devices / doc2000.c

diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c
index 40cc20f..c54e404 100644 (file)
--- 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);
@@ -579,7 +576,7 @@ 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;
@@ -587,9 +584,6 @@ 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;
@@ -965,72 +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);
 
@@ -1071,7 +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 */
@@ -1186,17 +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_unlock(&this->lock);
-       return ret;
+       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;
 }
 
 static int doc_erase(struct mtd_info *mtd, struct erase_info *instr)