From: Boris Brezillon <boris.brezillon@free-electrons.com>
To: David Woodhouse <dwmw2@infradead.org>,
Brian Norris <computersforpeace@gmail.com>,
linux-mtd@lists.infradead.org
Cc: Daniel Mack <daniel@zonque.org>,
Haojian Zhuang <haojian.zhuang@gmail.com>,
Robert Jarzmik <robert.jarzmik@free.fr>,
Kukjin Kim <kgene@kernel.org>,
Krzysztof Kozlowski <k.kozlowski@samsung.com>,
linux-samsung-soc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Ralf Baechle <ralf@linux-mips.org>,
linux-mips@linux-mips.org, Josh Wu <josh.wu@atmel.com>,
Ezequiel Garcia <ezequiel.garcia@free-electrons.com>,
Maxime Ripard <maxime.ripard@free-electrons.com>,
Chen-Yu Tsai <wens@csie.org>,
linux-sunxi@googlegroups.com, Stefan Agner <stefan@agner.ch>,
Kyungmin Park <kyungmin.park@samsung.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
punnaiah choudary kalluri <punnaia@xilinx.com>,
Priit Laes <plaes@plaes.org>,
Boris Brezillon <boris.brezillon@free-electrons.com>
Subject: [PATCH v2 13/51] mtd: onenand: use mtd_ooblayout_xxx() helpers where appropriate
Date: Thu, 4 Feb 2016 11:06:36 +0100 [thread overview]
Message-ID: <1454580434-32078-14-git-send-email-boris.brezillon@free-electrons.com> (raw)
In-Reply-To: <1454580434-32078-1-git-send-email-boris.brezillon@free-electrons.com>
The mtd_ooblayout_xxx() helper functions have been added to avoid direct
accesses to the ecclayout field, and thus ease for future reworks.
Use these helpers in all places where the oobfree[] and eccpos[] arrays
where directly accessed.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
---
drivers/mtd/onenand/onenand_base.c | 73 +++++++-------------------------------
1 file changed, 13 insertions(+), 60 deletions(-)
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 03a80de..6906c95 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -1024,34 +1024,15 @@ static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int col
int thislen)
{
struct onenand_chip *this = mtd->priv;
- struct nand_oobfree *free;
- int readcol = column;
- int readend = column + thislen;
- int lastgap = 0;
- unsigned int i;
- uint8_t *oob_buf = this->oob_buf;
-
- free = this->ecclayout->oobfree;
- for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
- if (readcol >= lastgap)
- readcol += free->offset - lastgap;
- if (readend >= lastgap)
- readend += free->offset - lastgap;
- lastgap = free->offset + free->length;
- }
- this->read_bufferram(mtd, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize);
- free = this->ecclayout->oobfree;
- for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
- int free_end = free->offset + free->length;
- if (free->offset < readend && free_end > readcol) {
- int st = max_t(int,free->offset,readcol);
- int ed = min_t(int,free_end,readend);
- int n = ed - st;
- memcpy(buf, oob_buf + st, n);
- buf += n;
- } else if (column == 0)
- break;
- }
+ int ret;
+
+ this->read_bufferram(mtd, ONENAND_SPARERAM, this->oob_buf, 0,
+ mtd->oobsize);
+ ret = mtd_ooblayout_get_databytes(mtd, buf, this->oob_buf,
+ column, thislen);
+ if (ret)
+ return ret;
+
return 0;
}
@@ -1808,34 +1789,7 @@ static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf,
const u_char *buf, int column, int thislen)
{
- struct onenand_chip *this = mtd->priv;
- struct nand_oobfree *free;
- int writecol = column;
- int writeend = column + thislen;
- int lastgap = 0;
- unsigned int i;
-
- free = this->ecclayout->oobfree;
- for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
- if (writecol >= lastgap)
- writecol += free->offset - lastgap;
- if (writeend >= lastgap)
- writeend += free->offset - lastgap;
- lastgap = free->offset + free->length;
- }
- free = this->ecclayout->oobfree;
- for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
- int free_end = free->offset + free->length;
- if (free->offset < writeend && free_end > writecol) {
- int st = max_t(int,free->offset,writecol);
- int ed = min_t(int,free_end,writeend);
- int n = ed - st;
- memcpy(oob_buf + st, buf, n);
- buf += n;
- } else if (column == 0)
- break;
- }
- return 0;
+ return mtd_ooblayout_set_databytes(mtd, buf, oob_buf, column, thislen);
}
/**
@@ -4036,10 +3990,9 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
* The number of bytes available for a client to place data into
* the out of band area
*/
- mtd->oobavail = 0;
- for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES &&
- this->ecclayout->oobfree[i].length; i++)
- mtd->oobavail += this->ecclayout->oobfree[i].length;
+ mtd->oobavail = mtd_ooblayout_count_freebytes(mtd);
+ if (mtd->oobavail < 0)
+ mtd->oobavail = 0;
mtd->ecclayout = this->ecclayout;
mtd->ecc_strength = 1;
--
2.1.4
next prev parent reply other threads:[~2016-02-04 10:25 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-04 10:06 [PATCH v2 00/51] mtd: rework ECC layout definition Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 01/51] mtd: kill the ecclayout->oobavail field Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 02/51] mtd: create an mtd_oobavail() helper and make use of it Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 03/51] mtd: mtdswap: remove useless if (!mtd->ecclayout) test Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 04/51] mtd: nand: simplify nand_bch_init() usage Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 05/51] mtd: add mtd_ooblayout_xxx() helper functions Boris Brezillon
2016-02-05 7:35 ` Boris Brezillon
2016-02-05 9:27 ` Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 06/51] mtd: use mtd_ooblayout_xxx() helpers where appropriate Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 07/51] mtd: nand: core: " Boris Brezillon
2016-02-05 9:31 ` Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 08/51] mtd: nand: atmel: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 09/51] mtd: nand: fsl_ifc: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 10/51] mtd: nand: gpmi: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 11/51] mtd: nand: lpc32xx: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 12/51] mtd: nand: omap2: " Boris Brezillon
2016-02-04 10:06 ` Boris Brezillon [this message]
2016-02-04 10:06 ` [PATCH v2 14/51] mtd: add mtd_set_ecclayout() helper function Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 15/51] mtd: use mtd_set_ecclayout() where appropriate Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 16/51] mtd: nand: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 17/51] mtd: onenand: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 18/51] mtd: docg3: " Boris Brezillon
2016-02-06 21:55 ` Robert Jarzmik
2016-02-04 10:06 ` [PATCH v2 19/51] mtd: create an mtd_ooblayout_ops struct to ease ECC layout definition Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 20/51] mtd: docg3: switch to mtd_ooblayout_ops Boris Brezillon
2016-02-06 21:57 ` Robert Jarzmik
2016-02-04 10:06 ` [PATCH v2 21/51] mtd: nand: implement the default mtd_ooblayout_ops Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 22/51] mtd: nand: bch: switch to mtd_ooblayout_ops Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 23/51] mtd: nand: sharpsl: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 24/51] mtd: nand: jz4740: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 25/51] mtd: nand: atmel: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 26/51] mtd: nand: bf5xx: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 27/51] mtd: nand: brcm: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 28/51] mtd: nand: cafe: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 29/51] mtd: nand: davinci: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 30/51] mtd: nand: denali: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 31/51] mtd: nand: diskonchip: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 32/51] mtd: nand: docg4: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 33/51] mtd: nand: fsl_elbc: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 34/51] mtd: nand: fsl_ifc: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 35/51] mtd: nand: fsmc: " Boris Brezillon
2016-02-04 10:06 ` [PATCH v2 36/51] mtd: nand: gpmi: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 37/51] mtd: nand: hisi504: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 38/51] mtd: nand: jz4780: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 39/51] mtd: nand: lpc32xx: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 40/51] mtd: nand: mxc: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 41/51] mtd: nand: omap2: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 42/51] mtd: nand: pxa3xx: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 43/51] mtd: nand: s3c2410: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 44/51] mtd: nand: sh_flctl: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 45/51] mtd: nand: sm_common: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 46/51] mtd: nand: sunxi: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 47/51] mtd: nand: vf610: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 48/51] mtd: onenand: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 49/51] staging: mt29f_spinand: " Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 50/51] mtd: nand: kill the ecc->layout field Boris Brezillon
2016-02-04 10:07 ` [PATCH v2 51/51] mtd: kill the nand_ecclayout struct Boris Brezillon
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