From patchwork Fri Sep 25 12:00:41 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [3/5] onenand: support custom bad block management Date: Fri, 25 Sep 2009 02:00:41 -0000 From: Haojian Zhuang X-Patchwork-Id: 34266 Message-Id: <771cded00909250500w34667fe3sa86acd82a00d736@mail.gmail.com> To: Eric Miao , David Woodhouse , kyungmin.park@samsung.com, linux-arm-kernel , linux-mtd@lists.infradead.org >From 8e32f4942dc839fe76ac33bc70aa7401de496c55 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Fri, 25 Sep 2009 15:21:50 -0400 Subject: [PATCH] [MTD] [ONENAND] supports custom bbm In onenand driver, the default bad block management is embedded. Custom BBM can't be used. Now make it to support custom BBM. Signed-off-by: Haojian Zhuang --- drivers/mtd/onenand/onenand_base.c | 23 +++++++++++++++++++++++ 1 files changed, 23 insertions(+), 0 deletions(-) return bbm->isbad_bbt(mtd, ofs, allowbbt); >From 8e32f4942dc839fe76ac33bc70aa7401de496c55 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Fri, 25 Sep 2009 15:21:50 -0400 Subject: [PATCH] [MTD] [ONENAND] supports custom bbm In onenand driver, the default bad block management is embedded. Custom BBM can't be used. Now make it to support custom BBM. Signed-off-by: Haojian Zhuang --- drivers/mtd/onenand/onenand_base.c | 23 +++++++++++++++++++++++ 1 files changed, 23 insertions(+), 0 deletions(-) diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 8f7c73a..cc6bccb 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -2136,6 +2136,29 @@ static int onenand_block_isbad_nolock(struct mtd_info *mtd, loff_t ofs, int allo { struct onenand_chip *this = mtd->priv; struct bbm_info *bbm = this->bbm; + struct mtd_oob_ops ops; + unsigned char *buf = this->page_buf; + int ret; + + if (!bbm) { + ops.mode = MTD_OOB_PLACE; + ops.ooblen = 2; + ops.oobbuf = buf; + ops.len = 0; + ops.ooboffs = 0; + ops.retlen = 0; + ops.oobretlen = 0; + + ofs = (ofs >> this->erase_shift) << this->erase_shift; + ret = onenand_read_oob_nolock(mtd, ofs, &ops); + if (ret == ONENAND_BBT_READ_FATAL_ERROR) + return -EIO; + + if ((buf[ONENAND_BADBLOCK_POS] & 0x01) == 0) { + return -EIO; + } + return 0; + } /* Return info from the table */ return bbm->isbad_bbt(mtd, ofs, allowbbt); -- 1.5.6.5