diff options
Diffstat (limited to 'drivers/mtd/nand/nand_base.c')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 122 |
1 files changed, 60 insertions, 62 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index da2f4d16e506..d796eb508b4f 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -139,16 +139,10 @@ static int nand_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len); static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, uint8_t *buf); -static int nand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, uint8_t *buf, uint8_t *eccbuf, - struct nand_oobinfo *oobsel); static int nand_read_oob(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, uint8_t *buf); static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const uint8_t *buf); -static int nand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const uint8_t *buf, uint8_t *eccbuf, - struct nand_oobinfo *oobsel); static int nand_write_oob(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const uint8_t *buf); static int nand_erase(struct mtd_info *mtd, struct erase_info *instr); @@ -1080,27 +1074,6 @@ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retl } /** - * nand_read_ecc - [MTD Interface] MTD compability function for nand_do_read_ecc - * @mtd: MTD device structure - * @from: offset to read from - * @len: number of bytes to read - * @retlen: pointer to variable to store the number of read bytes - * @buf: the databuffer to put data - * @oob_buf: filesystem supplied oob data buffer - * @oobsel: oob selection structure - * - * This function simply calls nand_do_read_ecc with flags = 0xff - */ -static int nand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, uint8_t *buf, uint8_t *oob_buf, struct nand_oobinfo *oobsel) -{ - /* use userspace supplied oobinfo, if zero */ - if (oobsel == NULL) - oobsel = &mtd->oobinfo; - return nand_do_read_ecc(mtd, from, len, retlen, buf, oob_buf, oobsel, 0xff); -} - -/** * nand_do_read_ecc - [MTD Interface] Read data with ECC * @mtd: MTD device structure * @from: offset to read from @@ -1524,6 +1497,55 @@ int nand_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, s } /** + * nand_write_raw - [GENERIC] Write raw data including oob + * @mtd: MTD device structure + * @buf: source buffer + * @to: offset to write to + * @len: number of bytes to write + * @buf: source buffer + * @oob: oob buffer + * + * Write raw data including oob + */ +int nand_write_raw(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, + uint8_t *buf, uint8_t *oob) +{ + struct nand_chip *this = mtd->priv; + int page = (int)(to >> this->page_shift); + int chip = (int)(to >> this->chip_shift); + int ret; + + *retlen = 0; + + /* Do not allow writes past end of device */ + if ((to + len) > mtd->size) { + DEBUG(MTD_DEBUG_LEVEL0, "nand_read_raw: Attempt write " + "beyond end of device\n"); + return -EINVAL; + } + + /* Grab the lock and see if the device is available */ + nand_get_device(this, mtd, FL_WRITING); + + this->select_chip(mtd, chip); + this->data_poi = buf; + + while (len != *retlen) { + ret = nand_write_page(mtd, this, page, oob, &mtd->oobinfo, 0); + if (ret) + return ret; + page++; + *retlen += mtd->writesize; + this->data_poi += mtd->writesize; + oob += mtd->oobsize; + } + + /* Deselect and wake up anyone waiting on the device */ + nand_release_device(mtd); + return 0; +} + +/** * nand_prepare_oobbuf - [GENERIC] Prepare the out of band buffer * @mtd: MTD device structure * @fsbuf: buffer given by fs driver @@ -1585,57 +1607,39 @@ static uint8_t *nand_prepare_oobbuf(struct mtd_info *mtd, uint8_t *fsbuf, struct #define NOTALIGNED(x) (x & (mtd->writesize-1)) != 0 /** - * nand_write - [MTD Interface] compability function for nand_write_ecc - * @mtd: MTD device structure - * @to: offset to write to - * @len: number of bytes to write - * @retlen: pointer to variable to store the number of written bytes - * @buf: the data to write - * - * This function simply calls nand_write_ecc with oob buffer and oobsel = NULL - * -*/ -static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const uint8_t *buf) -{ - return (nand_write_ecc(mtd, to, len, retlen, buf, NULL, NULL)); -} - -/** - * nand_write_ecc - [MTD Interface] NAND write with ECC + * nand_write - [MTD Interface] NAND write with ECC * @mtd: MTD device structure * @to: offset to write to * @len: number of bytes to write * @retlen: pointer to variable to store the number of written bytes * @buf: the data to write - * @eccbuf: filesystem supplied oob data buffer - * @oobsel: oob selection structure * * NAND write with ECC */ -static int nand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const uint8_t *buf, uint8_t *eccbuf, - struct nand_oobinfo *oobsel) +static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const uint8_t *buf) { int startpage, page, ret = -EIO, oob = 0, written = 0, chipnr; int autoplace = 0, numpages, totalpages; struct nand_chip *this = mtd->priv; - uint8_t *oobbuf, *bufstart; + uint8_t *oobbuf, *bufstart, *eccbuf = NULL; int ppblock = (1 << (this->phys_erase_shift - this->page_shift)); + struct nand_oobinfo *oobsel = &mtd->oobinfo; - DEBUG(MTD_DEBUG_LEVEL3, "nand_write_ecc: to = 0x%08x, len = %i\n", (unsigned int)to, (int)len); + DEBUG(MTD_DEBUG_LEVEL3, "nand_write: to = 0x%08x, len = %i\n", (unsigned int)to, (int)len); /* Initialize retlen, in case of early exit */ *retlen = 0; /* Do not allow write past end of device */ if ((to + len) > mtd->size) { - DEBUG(MTD_DEBUG_LEVEL0, "nand_write_ecc: Attempt to write past end of page\n"); + DEBUG(MTD_DEBUG_LEVEL0, "nand_write: Attempt to write past end of page\n"); return -EINVAL; } /* reject writes, which are not page aligned */ if (NOTALIGNED(to) || NOTALIGNED(len)) { - printk(KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n"); + printk(KERN_NOTICE "nand_write: Attempt to write not page aligned data\n"); return -EINVAL; } @@ -1651,10 +1655,6 @@ static int nand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, if (nand_check_wp(mtd)) goto out; - /* if oobsel is NULL, use chip defaults */ - if (oobsel == NULL) - oobsel = &mtd->oobinfo; - /* Autoplace of oob data ? Use the default placement scheme */ if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) { oobsel = this->autooob; @@ -1689,7 +1689,7 @@ static int nand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, */ ret = nand_write_page(mtd, this, page, &oobbuf[oob], oobsel, (--numpages > 0)); if (ret) { - DEBUG(MTD_DEBUG_LEVEL0, "nand_write_ecc: write_page failed %d\n", ret); + DEBUG(MTD_DEBUG_LEVEL0, "nand_write: write_page failed %d\n", ret); goto out; } /* Next oob page */ @@ -1712,7 +1712,7 @@ static int nand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, ret = nand_verify_pages(mtd, this, startpage, page - startpage, oobbuf, oobsel, chipnr, (eccbuf != NULL)); if (ret) { - DEBUG(MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret); + DEBUG(MTD_DEBUG_LEVEL0, "nand_write: verify_pages failed %d\n", ret); goto out; } *retlen = written; @@ -1741,7 +1741,7 @@ static int nand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, if (!ret) *retlen = written; else - DEBUG(MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret); + DEBUG(MTD_DEBUG_LEVEL0, "nand_write: verify_pages failed %d\n", ret); out: /* Deselect and wake up anyone waiting on the device */ @@ -2527,8 +2527,6 @@ int nand_scan(struct mtd_info *mtd, int maxchips) mtd->unpoint = NULL; mtd->read = nand_read; mtd->write = nand_write; - mtd->read_ecc = nand_read_ecc; - mtd->write_ecc = nand_write_ecc; mtd->read_oob = nand_read_oob; mtd->write_oob = nand_write_oob; mtd->sync = nand_sync; |
