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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Richard Weinberger <richard@nod.at>,
	David Woodhouse <dwmw2@infradead.org>,
	Brian Norris <computersforpeace@gmail.com>,
	Marek Vasut <marek.vasut@gmail.com>,
	Tudor Ambarus <Tudor.Ambarus@microchip.com>,
	Vignesh Raghavendra <vigneshr@ti.com>
Cc: Tudor Ambarus <tudor.ambarus@microchip.com>,
	Julien Su <juliensu@mxic.com.tw>,
	Schrempf Frieder <frieder.schrempf@kontron.de>,
	Paul Cercueil <paul@crapouillou.net>,
	Boris Brezillon <boris.brezillon@collabora.com>,
	linux-mtd@lists.infradead.org,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Mason Yang <masonccyang@mxic.com.tw>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 30/40] mtd: spinand: Move ECC related definitions earlier in the driver
Date: Thu, 19 Sep 2019 21:31:30 +0200
Message-ID: <20190919193141.7865-31-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20190919193141.7865-1-miquel.raynal@bootlin.com>

Prepare the creation of a SPI-NAND on-die ECC engine by gathering the
ECC-related code earlier enough in the core to avoid the need for
forward declarations.

The next step is to actually create that engine by implementing the
generic ECC interface.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/mtd/nand/spi/core.c              | 106 +++++++++++------------
 drivers/mtd/nand/spi/on-die-ecc-engine.c |   0
 2 files changed, 53 insertions(+), 53 deletions(-)
 create mode 100644 drivers/mtd/nand/spi/on-die-ecc-engine.c

diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c
index 7f6b0adbba26..49b252bc1352 100644
--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -192,6 +192,59 @@ static int spinand_ecc_enable(struct spinand_device *spinand,
 			       enable ? CFG_ECC_ENABLE : 0);
 }
 
+static int spinand_check_ecc_status(struct spinand_device *spinand, u8 status)
+{
+	struct nand_device *nand = spinand_to_nand(spinand);
+
+	if (spinand->eccinfo.get_status)
+		return spinand->eccinfo.get_status(spinand, status);
+
+	switch (status & STATUS_ECC_MASK) {
+	case STATUS_ECC_NO_BITFLIPS:
+		return 0;
+
+	case STATUS_ECC_HAS_BITFLIPS:
+		/*
+		 * We have no way to know exactly how many bitflips have been
+		 * fixed, so let's return the maximum possible value so that
+		 * wear-leveling layers move the data immediately.
+		 */
+		return nand->ecc.ctx.conf.strength;
+
+	case STATUS_ECC_UNCOR_ERROR:
+		return -EBADMSG;
+
+	default:
+		break;
+	}
+
+	return -EINVAL;
+}
+
+static int spinand_noecc_ooblayout_ecc(struct mtd_info *mtd, int section,
+				       struct mtd_oob_region *region)
+{
+	return -ERANGE;
+}
+
+static int spinand_noecc_ooblayout_free(struct mtd_info *mtd, int section,
+					struct mtd_oob_region *region)
+{
+	if (section)
+		return -ERANGE;
+
+	/* Reserve 2 bytes for the BBM. */
+	region->offset = 2;
+	region->length = 62;
+
+	return 0;
+}
+
+static const struct mtd_ooblayout_ops spinand_noecc_ooblayout = {
+	.ecc = spinand_noecc_ooblayout_ecc,
+	.free = spinand_noecc_ooblayout_free,
+};
+
 static int spinand_write_enable_op(struct spinand_device *spinand)
 {
 	struct spi_mem_op op = SPINAND_WR_EN_DIS_OP(true);
@@ -400,35 +453,6 @@ static int spinand_lock_block(struct spinand_device *spinand, u8 lock)
 	return spinand_write_reg_op(spinand, REG_BLOCK_LOCK, lock);
 }
 
-static int spinand_check_ecc_status(struct spinand_device *spinand, u8 status)
-{
-	struct nand_device *nand = spinand_to_nand(spinand);
-
-	if (spinand->eccinfo.get_status)
-		return spinand->eccinfo.get_status(spinand, status);
-
-	switch (status & STATUS_ECC_MASK) {
-	case STATUS_ECC_NO_BITFLIPS:
-		return 0;
-
-	case STATUS_ECC_HAS_BITFLIPS:
-		/*
-		 * We have no way to know exactly how many bitflips have been
-		 * fixed, so let's return the maximum possible value so that
-		 * wear-leveling layers move the data immediately.
-		 */
-		return nand->ecc.ctx.conf.strength;
-
-	case STATUS_ECC_UNCOR_ERROR:
-		return -EBADMSG;
-
-	default:
-		break;
-	}
-
-	return -EINVAL;
-}
-
 static int spinand_read_page(struct spinand_device *spinand,
 			     const struct nand_page_io_req *req,
 			     bool ecc_enabled)
@@ -928,30 +952,6 @@ static int spinand_detect(struct spinand_device *spinand)
 	return 0;
 }
 
-static int spinand_noecc_ooblayout_ecc(struct mtd_info *mtd, int section,
-				       struct mtd_oob_region *region)
-{
-	return -ERANGE;
-}
-
-static int spinand_noecc_ooblayout_free(struct mtd_info *mtd, int section,
-					struct mtd_oob_region *region)
-{
-	if (section)
-		return -ERANGE;
-
-	/* Reserve 2 bytes for the BBM. */
-	region->offset = 2;
-	region->length = 62;
-
-	return 0;
-}
-
-static const struct mtd_ooblayout_ops spinand_noecc_ooblayout = {
-	.ecc = spinand_noecc_ooblayout_ecc,
-	.free = spinand_noecc_ooblayout_free,
-};
-
 static int spinand_init(struct spinand_device *spinand)
 {
 	struct device *dev = &spinand->spimem->spi->dev;
diff --git a/drivers/mtd/nand/spi/on-die-ecc-engine.c b/drivers/mtd/nand/spi/on-die-ecc-engine.c
new file mode 100644
index 000000000000..e69de29bb2d1
-- 
2.20.1


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Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-19 19:31 [PATCH v3 00/40] Introduce the generic ECC engine abstraction Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 01/40] mtd: rawnand: Avoid a typedef Miquel Raynal
2019-10-12  8:41   ` Boris Brezillon
2019-09-19 19:31 ` [PATCH v3 02/40] mtd: rawnand: Add an invalid ECC mode to discriminate with valid ones Miquel Raynal
2019-10-12  8:48   ` Boris Brezillon
2019-09-19 19:31 ` [PATCH v3 03/40] mtd: rawnand: Create a new enumeration to describe OOB placement Miquel Raynal
2019-10-12  9:02   ` Boris Brezillon
2019-10-12  9:07     ` Boris Brezillon
2019-09-19 19:31 ` [PATCH v3 04/40] mtd: rawnand: Separate the ECC engine type and the " Miquel Raynal
2019-10-12  9:05   ` Boris Brezillon
2019-09-19 19:31 ` [PATCH v3 05/40] mtd: rawnand: Create a new enumeration to describe properly ECC types Miquel Raynal
2019-10-12  9:14   ` Boris Brezillon
2019-10-12  9:55   ` Boris Brezillon
2019-09-19 19:31 ` [PATCH v3 06/40] mtd: rawnand: Use the new ECC engine type enumeration Miquel Raynal
2019-10-12  9:15   ` Boris Brezillon
2019-10-12  9:17   ` Boris Brezillon
2019-10-12  9:28   ` Boris Brezillon
2019-09-19 19:31 ` [PATCH v3 07/40] mtd: rawnand: Drop the legacy ECC " Miquel Raynal
2019-10-12  9:29   ` Boris Brezillon
2019-09-19 19:31 ` [PATCH v3 08/40] mtd: nand: Move nand_device forward declaration to the top Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 09/40] mtd: nand: Add an extra level in the Kconfig hierarchy Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 10/40] mtd: nand: Drop useless 'depends on' in Kconfig Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 11/40] mtd: nand: Add a NAND page I/O request type Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 12/40] mtd: nand: Rename a core structure Miquel Raynal
2019-10-12  9:35   ` Boris Brezillon
2019-09-19 19:31 ` [PATCH v3 13/40] mtd: nand: Add more parameters to the nand_ecc_props structure Miquel Raynal
2019-10-12  9:37   ` Boris Brezillon
2019-09-19 19:31 ` [PATCH v3 14/40] mtd: nand: Introduce the ECC engine abstraction Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 15/40] mtd: nand: Convert the generic NAND layer to the generic ECC framework Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 16/40] mtd: Fix typo in mtd_ooblayout_set_databytes() description Miquel Raynal
2019-10-12 10:58   ` Boris Brezillon
2019-09-19 19:31 ` [PATCH v3 17/40] mtd: nand: Move standard OOB layouts to the generic ECC core Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 18/40] mtd: nand: Move ECC specific functions to the " Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 19/40] mtd: nand: ecc: Turn the software BCH implementation generic Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 20/40] mtd: rawnand: Get rid of chip->ecc.priv Miquel Raynal
2019-09-20  6:18   ` Maxime Ripard
2019-09-19 19:31 ` [PATCH v3 21/40] mtd: nand: ecc: Move Hamming code to the generic NAND layer Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 22/40] mtd: nand: ecc: Clarify the software Hamming introductory line Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 23/40] mtd: nand: ecc: Turn the software Hamming implementation generic Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 24/40] mtd: nand: Remove useless include about software Hamming ECC Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 25/40] mtd: nand: ecc: Let the software Hamming ECC engine be unselected Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 26/40] mtd: nand: ecc: Create the software BCH engine instance Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 27/40] mtd: nand: ecc: Create the software Hamming " Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 28/40] mtd: nand: Let software ECC engines be retrieved from the NAND core Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 29/40] mtd: spinand: Fix typo in comment Miquel Raynal
2019-09-19 19:31 ` Miquel Raynal [this message]
2019-09-19 19:31 ` [PATCH v3 31/40] mtd: spinand: Instantiate a SPI-NAND on-die ECC engine Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 32/40] mtd: nand: Let on-die ECC engines be retrieved from the NAND core Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 33/40] mtd: rawnand: Fill a default ECC provider/algorithm Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 34/40] mtd: spinand: " Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 35/40] mtd: nand: Add helpers to manage ECC engines and configurations Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 36/40] mtd: spinand: Use the external ECC engine logic Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 37/40] mtd: spinand: Propagate ECC information to the MTD structure Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 38/40] mtd: spinand: Allow the case where there is no ECC engine Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 39/40] mtd: spinand: Fix OOB read Miquel Raynal
2019-09-19 19:31 ` [PATCH v3 40/40] mtd: nand: ecc: Add infrastructure to support hardware engines Miquel Raynal

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