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/Linux-v5.15/drivers/mtd/nand/
Decc.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Generic Error-Correcting Code (ECC) engine
10 * This file describes the abstraction of any NAND ECC engine. It has been
11 * designed to fit most cases, including parallel NANDs and SPI-NANDs.
13 * There are three main situations where instantiating this ECC engine makes
15 * - external: The ECC engine is outside the NAND pipeline, typically this
16 * is a software ECC engine, or an hardware engine that is
17 * outside the NAND controller pipeline.
18 * - pipelined: The ECC engine is inside the NAND pipeline, ie. on the
19 * controller's side. This is the case of most of the raw NAND
[all …]
Dcore.c1 // SPDX-License-Identifier: GPL-2.0
6 * Boris Brezillon <boris.brezillon@free-electrons.com>
10 #define pr_fmt(fmt) "nand: " fmt
13 #include <linux/mtd/nand.h>
16 * nanddev_isbad() - Check if a block is bad
17 * @nand: NAND device
22 bool nanddev_isbad(struct nand_device *nand, const struct nand_pos *pos) in nanddev_isbad() argument
24 if (nanddev_bbt_is_initialized(nand)) { in nanddev_isbad()
28 entry = nanddev_bbt_pos_to_entry(nand, pos); in nanddev_isbad()
29 status = nanddev_bbt_get_block_status(nand, entry); in nanddev_isbad()
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DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 menu "NAND" menu
8 source "drivers/mtd/nand/onenand/Kconfig"
9 source "drivers/mtd/nand/raw/Kconfig"
10 source "drivers/mtd/nand/spi/Kconfig"
12 menu "ECC engine support"
19 bool "Software Hamming ECC engine"
26 widely used with old parts, newer NAND chips usually require
31 bool "NAND ECC Smart Media byte order"
35 Software ECC according to the Smart Media Specification.
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Decc-sw-bch.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * This file provides ECC correction for more than 1 bit per block of data,
14 #include <linux/mtd/nand.h>
15 #include <linux/mtd/nand-ecc-sw-bch.h>
18 * nand_ecc_sw_bch_calculate - Calculate the ECC corresponding to a data block
19 * @nand: NAND device
21 * @code: Output buffer with ECC
23 int nand_ecc_sw_bch_calculate(struct nand_device *nand, in nand_ecc_sw_bch_calculate() argument
26 struct nand_ecc_sw_bch_conf *engine_conf = nand->ecc.ctx.priv; in nand_ecc_sw_bch_calculate()
29 memset(code, 0, engine_conf->code_size); in nand_ecc_sw_bch_calculate()
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Decc-sw-hamming.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * This file contains an ECC algorithm that detects and corrects 1 bit
9 * Completely replaces the previous ECC implementation which was written by:
14 * can be found in Documentation/driver-api/mtd/nand_ecc.rst
20 #include <linux/mtd/nand.h>
21 #include <linux/mtd/nand-ecc-sw-hamming.h>
75 * addressbits is a lookup table to filter out the bits from the xor-ed
76 * ECC data that identify the faulty location.
307 * Finally calculate the ECC bits. in ecc_sw_hamming_calculate()
357 * nand_ecc_sw_hamming_calculate - Calculate 3-byte ECC for 256/512-byte block
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/Linux-v5.15/Documentation/devicetree/bindings/mtd/
Dnand-controller.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/mtd/nand-controller.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: NAND Chip and NAND Controller Generic Binding
10 - Miquel Raynal <miquel.raynal@bootlin.com>
11 - Richard Weinberger <richard@nod.at>
14 The NAND controller should be represented with its own DT node, and
15 all NAND chips attached to this controller should be defined as
16 children nodes of the NAND controller. This representation should be
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Dmtk-nand.txt1 MTK SoCs NAND FLASH controller (NFC) DT binding
3 This file documents the device tree bindings for MTK SoCs NAND controllers.
5 the nand controller interface driver and the ECC engine driver.
10 1) NFC NAND Controller Interface (NFI):
13 The first part of NFC is NAND Controller Interface (NFI) HW.
15 - compatible: Should be one of
16 "mediatek,mt2701-nfc",
17 "mediatek,mt2712-nfc",
18 "mediatek,mt7622-nfc".
19 - reg: Base physical address and size of NFI.
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Datmel-nand.txt1 Atmel NAND flash controller bindings
3 The NAND flash controller node should be defined under the EBI bus (see
4 Documentation/devicetree/bindings/memory-controllers/atmel,ebi.txt).
5 One or several NAND devices can be defined under this NAND controller.
6 The NAND controller might be connected to an ECC engine.
8 * NAND controller bindings:
11 - compatible: should be one of the following
12 "atmel,at91rm9200-nand-controller"
13 "atmel,at91sam9260-nand-controller"
14 "atmel,at91sam9261-nand-controller"
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Dgpmc-nand.txt3 GPMC connected NAND (found on OMAP boards) are represented as child nodes of
4 the GPMC controller with a name of "nand".
7 explained in a separate documents - please refer to
8 Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt
10 For NAND specific properties such as ECC modes or bus width, please refer to
11 Documentation/devicetree/bindings/mtd/nand-controller.yaml
16 - compatible: "ti,omap2-nand"
17 - reg: range id (CS number), base offset and length of the
18 NAND I/O space
19 - interrupts: Two interrupt specifiers, one for fifoevent, one for termcount.
[all …]
Dingenic,nand.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/mtd/ingenic,nand.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Ingenic SoCs NAND controller devicetree bindings
10 - Paul Cercueil <paul@crapouillou.net>
13 - $ref: nand-controller.yaml#
18 - ingenic,jz4740-nand
19 - ingenic,jz4725b-nand
20 - ingenic,jz4780-nand
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Dbrcm,brcmnand.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Broadcom STB NAND Controller
10 - Brian Norris <computersforpeace@gmail.com>
11 - Kamal Dasu <kdasu.kdev@gmail.com>
14 The Broadcom Set-Top Box NAND controller supports low-level access to raw NAND
15 flash chips. It has a memory-mapped register interface for both control
17 is paired with a custom DMA engine (inventively named "Flash DMA") which
25 -- Additional SoC-specific NAND controller properties --
[all …]
/Linux-v5.15/include/linux/mtd/
Dnand.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright 2017 - Free Electrons
6 * Boris Brezillon <boris.brezillon@free-electrons.com>
18 * struct nand_memory_organization - Memory organization structure
19 * @bits_per_cell: number of bits per NAND cell
27 * @ntargets: total number of targets exposed by the NAND device
55 * struct nand_row_converter - Information needed to convert an absolute offset
67 * struct nand_pos - NAND position object
68 * @target: the NAND target/die
74 * These information are usually used by specific sub-layers to select the
[all …]
Dnand-ecc-sw-bch.h1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * This file is the header for the NAND BCH ECC implementation.
11 #include <linux/mtd/nand.h>
15 * struct nand_ecc_sw_bch_conf - private software BCH ECC engine structure
17 * engine needs
19 * @calc_buf: Buffer to use when calculating ECC bytes
20 * @code_buf: Buffer to use when reading (raw) ECC bytes from the chip
23 * @eccmask: XOR ecc mask, allows erased pages to be decoded as valid
37 int nand_ecc_sw_bch_calculate(struct nand_device *nand,
39 int nand_ecc_sw_bch_correct(struct nand_device *nand, unsigned char *buf,
[all …]
Dnand-ecc-sw-hamming.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2000-2010 Steven J. Hill <sjhill@realitydiluted.com>
7 * This file is the header for the NAND Hamming ECC implementation.
13 #include <linux/mtd/nand.h>
16 * struct nand_ecc_sw_hamming_conf - private software Hamming ECC engine structure
18 * engine needs
20 * @calc_buf: Buffer to use when calculating ECC bytes
21 * @code_buf: Buffer to use when reading (raw) ECC bytes from the chip
34 int nand_ecc_sw_hamming_init_ctx(struct nand_device *nand);
35 void nand_ecc_sw_hamming_cleanup_ctx(struct nand_device *nand);
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Drawnand.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
8 * Contains standard defines and IDs for NAND flash devices
17 #include <linux/mtd/nand.h>
29 /* The maximum number of NAND chips in an array */
50 * Standard NAND flash commands
73 #define NAND_CMD_NONE -1
82 #define NAND_DATA_IFACE_CHECK_ONLY -1
85 * Constants for Hardware ECC
87 /* Reset Hardware ECC for read */
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/Linux-v5.15/drivers/mtd/nand/raw/
Domap2.c1 // SPDX-License-Identifier: GPL-2.0-only
10 #include <linux/dma-mapping.h>
18 #include <linux/mtd/nand-ecc-sw-bch.h>
21 #include <linux/omap-dma.h>
29 #include <linux/omap-gpmc.h>
30 #include <linux/platform_data/mtd-nand-omap2.h>
32 #define DRIVER_NAME "omap2-nand"
122 /* GPMC ecc engine settings for read */
129 /* GPMC ecc engine settings for write */
145 struct nand_chip nand; member
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DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "Raw/Parallel NAND Device Support"
8 NAND flash devices. For further information see
9 <http://www.linux-mtd.infradead.org/doc/nand.html>.
13 comment "Raw/parallel NAND flash controllers"
19 tristate "Denali NAND controller on Intel Moorestown"
23 Enable the driver for NAND flash on Intel Moorestown, using the
24 Denali NAND controller core.
27 tristate "Denali NAND controller as a DT device"
31 Enable the driver for NAND flash on platforms using a Denali NAND
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Darasan-nand-controller.c1 // SPDX-License-Identifier: GPL-2.0
3 * Arasan NAND Flash Controller Driver
5 * Copyright (C) 2014 - 2020 Xilinx, Inc.
17 #include <linux/dma-mapping.h>
114 #define ANFC_MAX_PKT_SIZE (SZ_2K - 1)
124 * struct anfc_op - Defines how to execute an operation
150 * struct anand - Defines the NAND chip related information
151 * @node: Used to store NAND chips into a list
152 * @chip: NAND chip information structure
153 * @rb: Ready-busy line
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Dmarvell_nand.c1 // SPDX-License-Identifier: GPL-2.0
3 * Marvell NAND flash controller driver
6 * Author: Miquel RAYNAL <miquel.raynal@free-electrons.com>
9 * This NAND controller driver handles two versions of the hardware,
13 * The main visible difference is that NFCv1 only has Hamming ECC
14 * capabilities, while NFCv2 also embeds a BCH ECC engine. Also, DMA
17 * The ECC layouts are depicted in details in Marvell AN-379, but here
21 * or 4) and each chunk will have its own ECC "digest" of 6B at the
23 * bytes (also called "spare" bytes in the driver). This engine
28 * +-------------------------------------------------------------+
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Dpl35x-nand-controller.c1 // SPDX-License-Identifier: GPL-2.0
3 * ARM PL35X NAND flash controller driver
33 #define PL35X_NANDC_DRIVER_NAME "pl35x-nand-controller"
60 /* SMC ECC status register (RO) */
63 /* SMC ECC configuration register */
70 /* SMC ECC command 1 register */
76 /* SMC ECC command 2 register */
82 /* SMC ECC value registers (RO) */
88 /* NAND AXI interface */
128 * struct pl35x_nandc - NAND flash controller driver structure
[all …]
Dnand_base.c1 // SPDX-License-Identifier: GPL-2.0-only
4 * This is the generic MTD driver for NAND flash devices. It should be
5 * capable of working with almost all NAND chips currently available.
8 * http://www.linux-mtd.infradead.org/doc/nand.html
11 * 2002-2006 Thomas Gleixner (tglx@linutronix.de)
21 * Check, if mtd->ecctype should be set to MTD_ECC_HW
22 * if we have HW ECC support.
37 #include <linux/mtd/nand.h>
38 #include <linux/mtd/nand-ecc-sw-hamming.h>
39 #include <linux/mtd/nand-ecc-sw-bch.h>
[all …]
Dcadence-nand-controller.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Cadence NAND flash controller driver
12 #include <linux/dma-mapping.h>
24 * - PIO - can work in master or slave DMA
25 * - CDMA - needs Master DMA for accessing command descriptors.
26 * - Generic mode - can use only slave DMA.
29 * on NAND flash memory. Driver uses CDMA mode for
88 /* Command Engine threads state. */
91 /* Command Engine interrupt thread error status. */
93 /* Command Engine interrupt thread error enable. */
[all …]
/Linux-v5.15/drivers/mtd/nand/raw/ingenic/
Dingenic_ecc.c1 // SPDX-License-Identifier: GPL-2.0
3 * JZ47xx ECC common code
18 * ingenic_ecc_calculate() - calculate ECC for a data buffer
19 * @ecc: ECC device.
20 * @params: ECC parameters.
22 * @ecc_code: output buffer with ECC.
24 * Return: 0 on success, -ETIMEDOUT if timed out while waiting for ECC
27 int ingenic_ecc_calculate(struct ingenic_ecc *ecc, in ingenic_ecc_calculate() argument
31 return ecc->ops->calculate(ecc, params, buf, ecc_code); in ingenic_ecc_calculate()
35 * ingenic_ecc_correct() - detect and correct bit errors
[all …]
Dingenic_nand_drv.c1 // SPDX-License-Identifier: GPL-2.0
3 * Ingenic JZ47xx NAND driver
24 #include <linux/jz4780-nemc.h>
28 #define DRV_NAME "ingenic-nand"
44 struct ingenic_ecc *ecc; member
75 struct nand_ecc_ctrl *ecc = &chip->ecc; in qi_lb60_ooblayout_ecc() local
77 if (section || !ecc->total) in qi_lb60_ooblayout_ecc()
78 return -ERANGE; in qi_lb60_ooblayout_ecc()
80 oobregion->length = ecc->total; in qi_lb60_ooblayout_ecc()
81 oobregion->offset = 12; in qi_lb60_ooblayout_ecc()
[all …]
/Linux-v5.15/drivers/mtd/nand/spi/
Dcore.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2016-2017 Micron Technology, Inc.
10 #define pr_fmt(fmt) "spi-nand: " fmt
21 #include <linux/spi/spi-mem.h>
26 spinand->scratchbuf); in spinand_read_reg_op()
29 ret = spi_mem_exec_op(spinand->spimem, &op); in spinand_read_reg_op()
33 *val = *spinand->scratchbuf; in spinand_read_reg_op()
40 spinand->scratchbuf); in spinand_write_reg_op()
42 *spinand->scratchbuf = val; in spinand_write_reg_op()
43 return spi_mem_exec_op(spinand->spimem, &op); in spinand_write_reg_op()
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