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The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: From: KR Kim Subject: [PATCH] mtd: spinand: add support for SkyHigh Memory ML-3 SPI NAND Flash family Date: Fri, 26 Jul 2024 11:08:04 +0900 This patch has been added to operate properly on SkyHigh memory's SPI NAND. This patch is derived from Takahiro's work who is author. 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X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From: KR Kim Subject: [PATCH] mtd: spinand: add support for SkyHigh Memory ML-3 SPI NAND Flash family Date: Fri, 26 Jul 2024 11:08:04 +0900 This patch has been added to operate properly on SkyHigh memory's SPI NAND. This patch is derived from Takahiro's work who is author. Added: - Some patch code for the SkyHigh Memory ML-3 SPI NAND Flash family. Created: - skyhigh.c Signed-off-by: KR Kim --- drivers/mtd/nand/spi/Makefile | 2 +- drivers/mtd/nand/spi/core.c | 7 +- drivers/mtd/nand/spi/skyhigh.c | 146 +++++++++++++++++++++++++++++++++ include/linux/mtd/spinand.h | 3 + 4 files changed, 156 insertions(+), 2 deletions(-) create mode 100644 drivers/mtd/nand/spi/skyhigh.c diff --git a/drivers/mtd/nand/spi/Makefile b/drivers/mtd/nand/spi/Makefile index 19cc77288ebb..1e61ab21893a 100644 --- a/drivers/mtd/nand/spi/Makefile +++ b/drivers/mtd/nand/spi/Makefile @@ -1,4 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 spinand-objs := core.o alliancememory.o ato.o esmt.o foresee.o gigadevice.o macronix.o -spinand-objs += micron.o paragon.o toshiba.o winbond.o xtx.o +spinand-objs += micron.o paragon.o skyhigh.o toshiba.o winbond.o xtx.o obj-$(CONFIG_MTD_SPI_NAND) += spinand.o diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c index e0b6715e5dfe..4a25ed49a61f 100644 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -34,7 +34,7 @@ static int spinand_read_reg_op(struct spinand_device *spinand, u8 reg, u8 *val) return 0; } -static int spinand_write_reg_op(struct spinand_device *spinand, u8 reg, u8 val) +int spinand_write_reg_op(struct spinand_device *spinand, u8 reg, u8 val) { struct spi_mem_op op = SPINAND_SET_FEATURE_OP(reg, spinand->scratchbuf); @@ -196,6 +196,10 @@ static int spinand_init_quad_enable(struct spinand_device *spinand) static int spinand_ecc_enable(struct spinand_device *spinand, bool enable) { + /* SHM : always ECC On */ + if (spinand->flags & SPINAND_ON_DIE_ECC_MANDATORY) + return 0; + return spinand_upd_cfg(spinand, CFG_ECC_ENABLE, enable ? CFG_ECC_ENABLE : 0); } @@ -945,6 +949,7 @@ static const struct spinand_manufacturer *spinand_manufacturers[] = { ¯onix_spinand_manufacturer, µn_spinand_manufacturer, ¶gon_spinand_manufacturer, + &skyhigh_spinand_manufacturer, &toshiba_spinand_manufacturer, &winbond_spinand_manufacturer, &xtx_spinand_manufacturer, diff --git a/drivers/mtd/nand/spi/skyhigh.c b/drivers/mtd/nand/spi/skyhigh.c new file mode 100644 index 000000000000..5829e8a9344b --- /dev/null +++ b/drivers/mtd/nand/spi/skyhigh.c @@ -0,0 +1,146 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2024 SkyHigh Memory Limited + * + * Author: Takahiro Kuwano + * Co-Author: KR Kim + * This patch is derived from Takahiro's work. + */ + +#include +#include +#include + +#define SPINAND_MFR_SKYHIGH 0x01 + +#define SKYHIGH_STATUS_ECC_1TO2_BITFLIPS (1 << 4) +#define SKYHIGH_STATUS_ECC_3TO6_BITFLIPS (2 << 4) +#define SKYHIGH_STATUS_ECC_UNCOR_ERROR (3 << 4) + +#define SKYHIGH_CONFIG_PROTECT_EN BIT(1) + +static SPINAND_OP_VARIANTS(read_cache_variants, + SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 4, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 2, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); + +static SPINAND_OP_VARIANTS(write_cache_variants, + SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), + SPINAND_PROG_LOAD(true, 0, NULL, 0)); + +static SPINAND_OP_VARIANTS(update_cache_variants, + SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), + SPINAND_PROG_LOAD(false, 0, NULL, 0)); + +static int skyhigh_spinand_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + if (section) + return -ERANGE; + + region->offset = mtd->oobsize; + region->length = mtd->oobsize / 2; + + return 0; +} + +static int skyhigh_spinand_ooblayout_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + if (section) + return -ERANGE; + + region->offset = 2; + region->length = mtd->oobsize - 2; + + return 0; +} + +static const struct mtd_ooblayout_ops skyhigh_spinand_ooblayout = { + .ecc = skyhigh_spinand_ooblayout_ecc, + .free = skyhigh_spinand_ooblayout_free, +}; + +static int skyhigh_spinand_ecc_get_status(struct spinand_device *spinand, u8 status) +{ + switch (status & STATUS_ECC_MASK) { + case STATUS_ECC_NO_BITFLIPS: + return 0; + + case SKYHIGH_STATUS_ECC_1TO2_BITFLIPS: + return 2; + + case SKYHIGH_STATUS_ECC_3TO6_BITFLIPS: + return 6; + + case SKYHIGH_STATUS_ECC_UNCOR_ERROR: + return -EBADMSG; + + default: + return -EINVAL; + } +} + +static const struct spinand_info skyhigh_spinand_table[] = { + SPINAND_INFO("S35ML01G301", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x15), + NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), + NAND_ECCREQ(6, 32), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + &write_cache_variants, + &update_cache_variants), + SPINAND_ON_DIE_ECC_MANDATORY, + SPINAND_ECCINFO(&skyhigh_spinand_ooblayout, + skyhigh_spinand_ecc_get_status)), + SPINAND_INFO("S35ML01G300", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x14), + NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), + NAND_ECCREQ(6, 32), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + &write_cache_variants, + &update_cache_variants), + SPINAND_ON_DIE_ECC_MANDATORY, + SPINAND_ECCINFO(&skyhigh_spinand_ooblayout, + skyhigh_spinand_ecc_get_status)), + SPINAND_INFO("S35ML02G300", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x25), + NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 2, 1, 1), + NAND_ECCREQ(6, 32), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + &write_cache_variants, + &update_cache_variants), + SPINAND_ON_DIE_ECC_MANDATORY, + SPINAND_ECCINFO(&skyhigh_spinand_ooblayout, + skyhigh_spinand_ecc_get_status)), + SPINAND_INFO("S35ML04G300", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x35), + NAND_MEMORG(1, 2048, 128, 64, 4096, 80, 2, 1, 1), + NAND_ECCREQ(6, 32), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + &write_cache_variants, + &update_cache_variants), + SPINAND_ON_DIE_ECC_MANDATORY, + SPINAND_ECCINFO(&skyhigh_spinand_ooblayout, + skyhigh_spinand_ecc_get_status)), +}; + +static int skyhigh_spinand_init(struct spinand_device *spinand) +{ + return spinand_write_reg_op(spinand, REG_BLOCK_LOCK, + SKYHIGH_CONFIG_PROTECT_EN); +} + +static const struct spinand_manufacturer_ops skyhigh_spinand_manuf_ops = { + .init = skyhigh_spinand_init, +}; + +const struct spinand_manufacturer skyhigh_spinand_manufacturer = { + .id = SPINAND_MFR_SKYHIGH, + .name = "SkyHigh", + .chips = skyhigh_spinand_table, + .nchips = ARRAY_SIZE(skyhigh_spinand_table), + .ops = &skyhigh_spinand_manuf_ops, +}; diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h index 5c19ead60499..421c3ce704e7 100644 --- a/include/linux/mtd/spinand.h +++ b/include/linux/mtd/spinand.h @@ -268,6 +268,7 @@ extern const struct spinand_manufacturer gigadevice_spinand_manufacturer; extern const struct spinand_manufacturer macronix_spinand_manufacturer; extern const struct spinand_manufacturer micron_spinand_manufacturer; extern const struct spinand_manufacturer paragon_spinand_manufacturer; +extern const struct spinand_manufacturer skyhigh_spinand_manufacturer; extern const struct spinand_manufacturer toshiba_spinand_manufacturer; extern const struct spinand_manufacturer winbond_spinand_manufacturer; extern const struct spinand_manufacturer xtx_spinand_manufacturer; @@ -312,6 +313,7 @@ struct spinand_ecc_info { #define SPINAND_HAS_QE_BIT BIT(0) #define SPINAND_HAS_CR_FEAT_BIT BIT(1) +#define SPINAND_ON_DIE_ECC_MANDATORY BIT(2) /** * struct spinand_ondie_ecc_conf - private SPI-NAND on-die ECC engine structure @@ -518,5 +520,6 @@ int spinand_match_and_init(struct spinand_device *spinand, int spinand_upd_cfg(struct spinand_device *spinand, u8 mask, u8 val); int spinand_select_target(struct spinand_device *spinand, unsigned int target); +int spinand_write_reg_op(struct spinand_device *spinand, u8 reg, u8 val); #endif /* __LINUX_MTD_SPINAND_H */