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mtd: nand: Clarify Kconfig entry for software Hamming ECC entries 

The software Hamming ECC correction implementation is referred as
MTD_NAND_ECC which is too generic. Rename it
MTD_NAND_ECC_SW_HAMMING. Also rename MTD_NAND_ECC_SMC which is an
SMC quirk in the Hamming implementation as
MTD_NAND_ECC_SW_HAMMING_SMC.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Miquel Raynal 2019-02-08 08:48:37 +01:00
parent 714c068228
commit 9bb94643b9
9 changed files with 24 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/configs/nhk8815_defconfig
View File

@ -53,7 +53,7 @@ CONFIG_MTD_BLOCK=y
CONFIG_MTD_ONENAND=y
CONFIG_MTD_ONENAND_VERIFY_WRITE=y
CONFIG_MTD_ONENAND_GENERIC=y
CONFIG_MTD_NAND_ECC_SMC=y
CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC=y
CONFIG_MTD_NAND=y
CONFIG_MTD_NAND_FSMC=y
CONFIG_BLK_DEV_LOOP=y

2
arch/mips/configs/generic/board-ni169445.config
View File

@ -15,7 +15,7 @@ CONFIG_MTD=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_NAND_ECC=y
CONFIG_MTD_NAND_ECC_SW_HAMMING=y
CONFIG_MTD_NAND_ECC_SW_BCH=y
CONFIG_MTD_NAND=y
CONFIG_MTD_NAND_GPIO=y

2
arch/powerpc/configs/85xx/tqm8548_defconfig
View File

@ -35,7 +35,7 @@ CONFIG_MTD=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_AMDSTD=y
CONFIG_MTD_PHYSMAP_OF=y
CONFIG_MTD_NAND_ECC_SMC=y
CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC=y
CONFIG_MTD_NAND=y
CONFIG_MTD_NAND_FSL_UPM=y
CONFIG_BLK_DEV_LOOP=y

3
drivers/mtd/Kconfig
View File

@ -230,12 +230,11 @@ config SSFDC
This enables read only access to SmartMedia formatted NAND
flash. You can mount it with FAT file system.
config SM_FTL
tristate "SmartMedia/xD new translation layer"
depends on BLOCK
select MTD_BLKDEVS
select MTD_NAND_ECC
select MTD_NAND_ECC_SW_HAMMING
help
This enables EXPERIMENTAL R/W support for SmartMedia/xD
FTL (Flash translation layer).

11
drivers/mtd/nand/raw/Kconfig
View File

@ -1,20 +1,19 @@
config MTD_NAND_ECC
config MTD_NAND_ECC_SW_HAMMING
tristate
config MTD_NAND_ECC_SMC
config MTD_NAND_ECC_SW_HAMMING_SMC
bool "NAND ECC Smart Media byte order"
depends on MTD_NAND_ECC
depends on MTD_NAND_ECC_SW_HAMMING
default n
help
Software ECC according to the Smart Media Specification.
The original Linux implementation had byte 0 and 1 swapped.
menuconfig MTD_NAND
tristate "Raw/Parallel NAND Device Support"
depends on MTD
select MTD_NAND_ECC
select MTD_NAND_CORE
select MTD_NAND_ECC_SW_HAMMING
help
This enables support for accessing all type of raw/parallel
NAND flash devices. For further information see
@ -132,7 +131,7 @@ config MTD_NAND_S3C2410_DEBUG
config MTD_NAND_NDFC
tristate "NDFC NanD Flash Controller"
depends on 4xx
select MTD_NAND_ECC_SMC
select MTD_NAND_ECC_SW_HAMMING_SMC
help
NDFC Nand Flash Controllers are integrated in IBM/AMCC's 4xx SoCs

2
drivers/mtd/nand/raw/Makefile
View File

@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_MTD_NAND) += nand.o
obj-$(CONFIG_MTD_NAND_ECC) += nand_ecc.o
obj-$(CONFIG_MTD_NAND_ECC_SW_HAMMING) += nand_ecc.o
obj-$(CONFIG_MTD_NAND_ECC_SW_BCH) += nand_bch.o
obj-$(CONFIG_MTD_SM_COMMON) += sm_common.o

2
drivers/mtd/nand/raw/nand_base.c
View File

@ -5081,7 +5081,7 @@ static int nand_set_ecc_soft_ops(struct nand_chip *chip)
ecc->bytes = 3;
ecc->strength = 1;
if (IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC))
if (IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC))
ecc->options |= NAND_ECC_SOFT_HAMMING_SM_ORDER;
return 0;

12
drivers/mtd/sm_ftl.c
View File

@ -222,17 +222,17 @@ static int sm_correct_sector(uint8_t *buffer, struct sm_oob *oob)
uint8_t ecc[3];
__nand_calculate_ecc(buffer, SM_SMALL_PAGE, ecc,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC));
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
if (__nand_correct_data(buffer, ecc, oob->ecc1, SM_SMALL_PAGE,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC)) < 0)
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC)) < 0)
return -EIO;
buffer += SM_SMALL_PAGE;
__nand_calculate_ecc(buffer, SM_SMALL_PAGE, ecc,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC));
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
if (__nand_correct_data(buffer, ecc, oob->ecc2, SM_SMALL_PAGE,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC)) < 0)
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC)) < 0)
return -EIO;
return 0;
}
@ -399,11 +399,11 @@ restart:
if (ftl->smallpagenand) {
__nand_calculate_ecc(buf + boffset, SM_SMALL_PAGE,
oob.ecc1,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC));
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
__nand_calculate_ecc(buf + boffset + SM_SMALL_PAGE,
SM_SMALL_PAGE, oob.ecc2,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC));
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
}
if (!sm_write_sector(ftl, zone, block, boffset,
buf + boffset, &oob))

14
drivers/mtd/tests/mtd_nandecctest.c
View File

@ -122,9 +122,9 @@ static int no_bit_error_verify(void *error_data, void *error_ecc,
int ret;
__nand_calculate_ecc(error_data, size, calc_ecc,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC));
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
ret = __nand_correct_data(error_data, error_ecc, calc_ecc, size,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC));
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
if (ret == 0 && !memcmp(correct_data, error_data, size))
return 0;
@ -152,9 +152,9 @@ static int single_bit_error_correct(void *error_data, void *error_ecc,
int ret;
__nand_calculate_ecc(error_data, size, calc_ecc,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC));
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
ret = __nand_correct_data(error_data, error_ecc, calc_ecc, size,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC));
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
if (ret == 1 && !memcmp(correct_data, error_data, size))
return 0;
@ -189,9 +189,9 @@ static int double_bit_error_detect(void *error_data, void *error_ecc,
int ret;
__nand_calculate_ecc(error_data, size, calc_ecc,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC));
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
ret = __nand_correct_data(error_data, error_ecc, calc_ecc, size,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC));
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
return (ret == -EBADMSG) ? 0 : -EINVAL;
}
@ -266,7 +266,7 @@ static int nand_ecc_test_run(const size_t size)
prandom_bytes(correct_data, size);
__nand_calculate_ecc(correct_data, size, correct_ecc,
IS_ENABLED(CONFIG_MTD_NAND_ECC_SMC));
IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC));
for (i = 0; i < ARRAY_SIZE(nand_ecc_test); i++) {
nand_ecc_test[i].prepare(error_data, error_ecc,