From: Mikhail Kshevetskiy mikhail.kshevetskiy@iopsys.eu
Currently there are 3 different variants of read_id implementation: 1. opcode only. Found in GD5FxGQ4xF. 2. opcode + 1 addr byte. Found in GD5GxGQ4xA/E 3. opcode + 1 dummy byte. Found in other currently supported chips.
Original implementation was for variant 1 and let detect function of chips with variant 2 and 3 to ignore the first byte. This isn't robust:
1. For chips of variant 2, if SPI master doesn't keep MOSI low during read, chip will get a random id offset, and the entire id buffer will shift by that offset, causing detect failure.
2. For chips of variant 1, if it happens to get a devid that equals to manufacture id of variant 2 or 3 chips, it'll get incorrectly detected.
This patch reworks detect procedure to address problems above. New logic do detection for all variants separatedly, in 1-2-3 order. Since all current detect methods do exactly the same id matching procedure, unify them into core.c and remove detect method from manufacture_ops.
This is a rework of Chuanhong Guo gch981213@gmail.com patch submitted to linux kernel
Signed-off-by: Mikhail Kshevetskiy mikhail.kshevetskiy@iopsys.eu --- drivers/mtd/nand/spi/core.c | 104 +++++++++++++++++++----------- drivers/mtd/nand/spi/gigadevice.c | 30 ++------- drivers/mtd/nand/spi/macronix.c | 45 +++++-------- drivers/mtd/nand/spi/micron.c | 50 ++++++-------- drivers/mtd/nand/spi/toshiba.c | 66 +++++++++---------- drivers/mtd/nand/spi/winbond.c | 34 ++-------- include/linux/mtd/spinand.h | 66 ++++++++++++------- 7 files changed, 187 insertions(+), 208 deletions(-)
diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c index 4edb7ae952..e42c061049 100644 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -17,6 +17,7 @@ #include <linux/mtd/spinand.h> #include <linux/of.h> #include <linux/slab.h> +#include <linux/string.h> #include <linux/spi/spi.h> #include <linux/spi/spi-mem.h> #else @@ -451,9 +452,11 @@ out: return status & STATUS_BUSY ? -ETIMEDOUT : 0; }
-static int spinand_read_id_op(struct spinand_device *spinand, u8 *buf) +static int spinand_read_id_op(struct spinand_device *spinand, u8 naddr, + u8 ndummy, u8 *buf) { - struct spi_mem_op op = SPINAND_READID_OP(0, spinand->scratchbuf, + struct spi_mem_op op = SPINAND_READID_OP(naddr, ndummy, + spinand->scratchbuf, SPINAND_MAX_ID_LEN); int ret;
@@ -807,21 +810,6 @@ static int spinand_mtd_block_isreserved(struct mtd_info *mtd, loff_t offs) return ret; }
-const struct spi_mem_op * -spinand_find_supported_op(struct spinand_device *spinand, - const struct spi_mem_op *ops, - unsigned int nops) -{ - unsigned int i; - - for (i = 0; i < nops; i++) { - if (spi_mem_supports_op(spinand->slave, &ops[i])) - return &ops[i]; - } - - return NULL; -} - static const struct nand_ops spinand_ops = { .erase = spinand_erase, .markbad = spinand_markbad, @@ -836,24 +824,62 @@ static const struct spinand_manufacturer *spinand_manufacturers[] = { &winbond_spinand_manufacturer, };
-static int spinand_manufacturer_detect(struct spinand_device *spinand) +static int spinand_manufacturer_match(struct spinand_device *spinand, + enum spinand_readid_method rdid_method) { + u8 *id = spinand->id.data; unsigned int i; int ret;
for (i = 0; i < ARRAY_SIZE(spinand_manufacturers); i++) { - ret = spinand_manufacturers[i]->ops->detect(spinand); - if (ret > 0) { - spinand->manufacturer = spinand_manufacturers[i]; - return 0; - } else if (ret < 0) { - return ret; - } - } + const struct spinand_manufacturer *manufacturer = + spinand_manufacturers[i];
+ if (id[0] != manufacturer->id) + continue; + + ret = spinand_match_and_init(spinand, + manufacturer->chips, + manufacturer->nchips, + rdid_method); + if (ret < 0) + continue; + + spinand->manufacturer = manufacturer; + return 0; + } return -ENOTSUPP; }
+static int spinand_id_detect(struct spinand_device *spinand) +{ + u8 *id = spinand->id.data; + int ret; + + ret = spinand_read_id_op(spinand, 0, 0, id); + if (ret) + return ret; + ret = spinand_manufacturer_match(spinand, SPINAND_READID_METHOD_OPCODE); + if (!ret) + return 0; + + ret = spinand_read_id_op(spinand, 1, 0, id); + if (ret) + return ret; + ret = spinand_manufacturer_match(spinand, + SPINAND_READID_METHOD_OPCODE_ADDR); + if (!ret) + return 0; + + ret = spinand_read_id_op(spinand, 0, 1, id); + if (ret) + return ret; + ret = spinand_manufacturer_match(spinand, + SPINAND_READID_METHOD_OPCODE_DUMMY); + + return ret; +} + static int spinand_manufacturer_init(struct spinand_device *spinand) { if (spinand->manufacturer->ops->init) @@ -909,9 +935,9 @@ spinand_select_op_variant(struct spinand_device *spinand, * @spinand: SPI NAND object * @table: SPI NAND device description table * @table_size: size of the device description table + * @rdid_method: read id method to match * - * Should be used by SPI NAND manufacturer drivers when they want to find a - * match between a device ID retrieved through the READ_ID command and an + * Match between a device ID retrieved through the READ_ID command and an * entry in the SPI NAND description table. If a match is found, the spinand * object will be initialized with information provided by the matching * spinand_info entry. @@ -920,8 +946,10 @@ spinand_select_op_variant(struct spinand_device *spinand, */ int spinand_match_and_init(struct spinand_device *spinand, const struct spinand_info *table, - unsigned int table_size, u8 devid) + unsigned int table_size, + enum spinand_readid_method rdid_method) { + u8 *id = spinand->id.data; struct nand_device *nand = spinand_to_nand(spinand); unsigned int i;
@@ -929,13 +957,17 @@ int spinand_match_and_init(struct spinand_device *spinand, const struct spinand_info *info = &table[i]; const struct spi_mem_op *op;
- if (devid != info->devid) + if (rdid_method != info->devid.method) + continue; + + if (memcmp(id + 1, info->devid.id, info->devid.len)) continue;
nand->memorg = table[i].memorg; nand->eccreq = table[i].eccreq; spinand->eccinfo = table[i].eccinfo; spinand->flags = table[i].flags; + spinand->id.len = 1 + table[i].devid.len; spinand->select_target = table[i].select_target;
op = spinand_select_op_variant(spinand, @@ -971,13 +1003,7 @@ static int spinand_detect(struct spinand_device *spinand) if (ret) return ret;
- ret = spinand_read_id_op(spinand, spinand->id.data); - if (ret) - return ret; - - spinand->id.len = SPINAND_MAX_ID_LEN; - - ret = spinand_manufacturer_detect(spinand); + ret = spinand_id_detect(spinand); if (ret) { dev_err(spinand->slave->dev, "unknown raw ID %*phN\n", SPINAND_MAX_ID_LEN, spinand->id.data); @@ -1081,11 +1107,11 @@ static int spinand_init(struct spinand_device *spinand) for (i = 0; i < nand->memorg.ntargets; i++) { ret = spinand_select_target(spinand, i); if (ret) - goto err_free_bufs; + goto err_manuf_cleanup;
ret = spinand_lock_block(spinand, BL_ALL_UNLOCKED); if (ret) - goto err_free_bufs; + goto err_manuf_cleanup; }
ret = nanddev_init(nand, &spinand_ops, THIS_MODULE); diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c index 25d9f80d26..370ffb765e 100644 --- a/drivers/mtd/nand/spi/gigadevice.c +++ b/drivers/mtd/nand/spi/gigadevice.c @@ -158,7 +158,8 @@ static const struct mtd_ooblayout_ops gd5fxgqxxexxg_ooblayout = { };
static const struct spinand_info gigadevice_spinand_table[] = { - SPINAND_INFO("GD5F1GQ4UExxG", 0xd1, + SPINAND_INFO("GD5F1GQ4UExxG", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xd1), NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&gd5fxgq4_read_cache_variants, @@ -167,7 +168,8 @@ static const struct spinand_info gigadevice_spinand_table[] = { 0, SPINAND_ECCINFO(&gd5fxgqxxexxg_ooblayout, gd5fxgq4xexxg_ecc_get_status)), - SPINAND_INFO("GD5F1GQ5UExxG", 0x51, + SPINAND_INFO("GD5F1GQ5UExxG", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x51), NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), NAND_ECCREQ(4, 512), SPINAND_INFO_OP_VARIANTS(&gd5f1gq5_read_cache_variants, @@ -178,33 +180,13 @@ static const struct spinand_info gigadevice_spinand_table[] = { gd5fxgq5xexxg_ecc_get_status)), };
-static int gigadevice_spinand_detect(struct spinand_device *spinand) -{ - u8 *id = spinand->id.data; - int ret; - - /* - * For GD NANDs, There is an address byte needed to shift in before IDs - * are read out, so the first byte in raw_id is dummy. - */ - if (id[1] != SPINAND_MFR_GIGADEVICE) - return 0; - - ret = spinand_match_and_init(spinand, gigadevice_spinand_table, - ARRAY_SIZE(gigadevice_spinand_table), - id[2]); - if (ret) - return ret; - - return 1; -} - static const struct spinand_manufacturer_ops gigadevice_spinand_manuf_ops = { - .detect = gigadevice_spinand_detect, };
const struct spinand_manufacturer gigadevice_spinand_manufacturer = { .id = SPINAND_MFR_GIGADEVICE, .name = "GigaDevice", + .chips = gigadevice_spinand_table, + .nchips = ARRAY_SIZE(gigadevice_spinand_table), .ops = &gigadevice_spinand_manuf_ops, }; diff --git a/drivers/mtd/nand/spi/macronix.c b/drivers/mtd/nand/spi/macronix.c index 6a1d6a1793..8c88883665 100644 --- a/drivers/mtd/nand/spi/macronix.c +++ b/drivers/mtd/nand/spi/macronix.c @@ -105,7 +105,8 @@ static int mx35lf1ge4ab_ecc_get_status(struct spinand_device *spinand, }
static const struct spinand_info macronix_spinand_table[] = { - SPINAND_INFO("MX35LF1GE4AB", 0x12, + SPINAND_INFO("MX35LF1GE4AB", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x12), NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1), NAND_ECCREQ(4, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -114,7 +115,8 @@ static const struct spinand_info macronix_spinand_table[] = { SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, mx35lf1ge4ab_ecc_get_status)), - SPINAND_INFO("MX35LF2GE4AB", 0x22, + SPINAND_INFO("MX35LF2GE4AB", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x22), NAND_MEMORG(1, 2048, 64, 64, 2048, 2, 1, 1), NAND_ECCREQ(4, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -122,7 +124,8 @@ static const struct spinand_info macronix_spinand_table[] = { &update_cache_variants), SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, NULL)), - SPINAND_INFO("MX35UF4GE4AD", 0xb7, + SPINAND_INFO("MX35UF4GE4AD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xb7), NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -131,7 +134,8 @@ static const struct spinand_info macronix_spinand_table[] = { SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, mx35lf1ge4ab_ecc_get_status)), - SPINAND_INFO("MX35UF2GE4AD", 0xa6, + SPINAND_INFO("MX35UF2GE4AD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xa6), NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -140,7 +144,8 @@ static const struct spinand_info macronix_spinand_table[] = { SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, mx35lf1ge4ab_ecc_get_status)), - SPINAND_INFO("MX35UF2GE4AC", 0xa2, + SPINAND_INFO("MX35UF2GE4AC", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xa2), NAND_MEMORG(1, 2048, 64, 64, 2048, 1, 1, 1), NAND_ECCREQ(4, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -149,7 +154,8 @@ static const struct spinand_info macronix_spinand_table[] = { SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, mx35lf1ge4ab_ecc_get_status)), - SPINAND_INFO("MX35UF1GE4AD", 0x96, + SPINAND_INFO("MX35UF1GE4AD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x96), NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -158,7 +164,8 @@ static const struct spinand_info macronix_spinand_table[] = { SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, mx35lf1ge4ab_ecc_get_status)), - SPINAND_INFO("MX35UF1GE4AC", 0x92, + SPINAND_INFO("MX35UF1GE4AC", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x92), NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1), NAND_ECCREQ(4, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -170,33 +177,13 @@ static const struct spinand_info macronix_spinand_table[] = {
};
-static int macronix_spinand_detect(struct spinand_device *spinand) -{ - u8 *id = spinand->id.data; - int ret; - - /* - * Macronix SPI NAND read ID needs a dummy byte, so the first byte in - * raw_id is garbage. - */ - if (id[1] != SPINAND_MFR_MACRONIX) - return 0; - - ret = spinand_match_and_init(spinand, macronix_spinand_table, - ARRAY_SIZE(macronix_spinand_table), - id[2]); - if (ret) - return ret; - - return 1; -} - static const struct spinand_manufacturer_ops macronix_spinand_manuf_ops = { - .detect = macronix_spinand_detect, };
const struct spinand_manufacturer macronix_spinand_manufacturer = { .id = SPINAND_MFR_MACRONIX, .name = "Macronix", + .chips = macronix_spinand_table, + .nchips = ARRAY_SIZE(macronix_spinand_table), .ops = ¯onix_spinand_manuf_ops, }; diff --git a/drivers/mtd/nand/spi/micron.c b/drivers/mtd/nand/spi/micron.c index 3f5848aacd..9e6cf35ea0 100644 --- a/drivers/mtd/nand/spi/micron.c +++ b/drivers/mtd/nand/spi/micron.c @@ -120,7 +120,8 @@ static int micron_8_ecc_get_status(struct spinand_device *spinand,
static const struct spinand_info micron_spinand_table[] = { /* M79A 2Gb 3.3V */ - SPINAND_INFO("MT29F2G01ABAGD", 0x24, + SPINAND_INFO("MT29F2G01ABAGD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x24), NAND_MEMORG(1, 2048, 128, 64, 2048, 2, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -130,7 +131,8 @@ static const struct spinand_info micron_spinand_table[] = { SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status)), /* M79A 2Gb 1.8V */ - SPINAND_INFO("MT29F2G01ABBGD", 0x25, + SPINAND_INFO("MT29F2G01ABBGD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x25), NAND_MEMORG(1, 2048, 128, 64, 2048, 2, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -140,7 +142,8 @@ static const struct spinand_info micron_spinand_table[] = { SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status)), /* M78A 1Gb 3.3V */ - SPINAND_INFO("MT29F1G01ABAFD", 0x14, + SPINAND_INFO("MT29F1G01ABAFD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x14), NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -150,7 +153,8 @@ static const struct spinand_info micron_spinand_table[] = { SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status)), /* M78A 1Gb 1.8V */ - SPINAND_INFO("MT29F1G01ABAFD", 0x15, + SPINAND_INFO("MT29F1G01ABAFD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x15), NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -160,7 +164,8 @@ static const struct spinand_info micron_spinand_table[] = { SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status)), /* M79A 4Gb 3.3V */ - SPINAND_INFO("MT29F4G01ADAGD", 0x36, + SPINAND_INFO("MT29F4G01ADAGD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x36), NAND_MEMORG(1, 2048, 128, 64, 2048, 2, 1, 2), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -171,7 +176,8 @@ static const struct spinand_info micron_spinand_table[] = { micron_8_ecc_get_status), SPINAND_SELECT_TARGET(micron_select_target)), /* M70A 4Gb 3.3V */ - SPINAND_INFO("MT29F4G01ABAFD", 0x34, + SPINAND_INFO("MT29F4G01ABAFD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x34), NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -181,7 +187,8 @@ static const struct spinand_info micron_spinand_table[] = { SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status)), /* M70A 4Gb 1.8V */ - SPINAND_INFO("MT29F4G01ABBFD", 0x35, + SPINAND_INFO("MT29F4G01ABBFD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x35), NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -191,7 +198,8 @@ static const struct spinand_info micron_spinand_table[] = { SPINAND_ECCINFO(µn_8_ooblayout, micron_8_ecc_get_status)), /* M70A 8Gb 3.3V */ - SPINAND_INFO("MT29F8G01ADAFD", 0x46, + SPINAND_INFO("MT29F8G01ADAFD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x46), NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 2), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -202,7 +210,8 @@ static const struct spinand_info micron_spinand_table[] = { micron_8_ecc_get_status), SPINAND_SELECT_TARGET(micron_select_target)), /* M70A 8Gb 1.8V */ - SPINAND_INFO("MT29F8G01ADBFD", 0x47, + SPINAND_INFO("MT29F8G01ADBFD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x47), NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 2), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -214,26 +223,6 @@ static const struct spinand_info micron_spinand_table[] = { SPINAND_SELECT_TARGET(micron_select_target)), };
-static int micron_spinand_detect(struct spinand_device *spinand) -{ - u8 *id = spinand->id.data; - int ret; - - /* - * Micron SPI NAND read ID need a dummy byte, - * so the first byte in raw_id is dummy. - */ - if (id[1] != SPINAND_MFR_MICRON) - return 0; - - ret = spinand_match_and_init(spinand, micron_spinand_table, - ARRAY_SIZE(micron_spinand_table), id[2]); - if (ret) - return ret; - - return 1; -} - static int micron_spinand_init(struct spinand_device *spinand) { /* @@ -248,12 +237,13 @@ static int micron_spinand_init(struct spinand_device *spinand) }
static const struct spinand_manufacturer_ops micron_spinand_manuf_ops = { - .detect = micron_spinand_detect, .init = micron_spinand_init, };
const struct spinand_manufacturer micron_spinand_manufacturer = { .id = SPINAND_MFR_MICRON, .name = "Micron", + .chips = micron_spinand_table, + .nchips = ARRAY_SIZE(micron_spinand_table), .ops = µn_spinand_manuf_ops, }; diff --git a/drivers/mtd/nand/spi/toshiba.c b/drivers/mtd/nand/spi/toshiba.c index 2a7b201bb1..872634f0fe 100644 --- a/drivers/mtd/nand/spi/toshiba.c +++ b/drivers/mtd/nand/spi/toshiba.c @@ -111,7 +111,8 @@ static int tx58cxgxsxraix_ecc_get_status(struct spinand_device *spinand,
static const struct spinand_info toshiba_spinand_table[] = { /* 3.3V 1Gb (1st generation) */ - SPINAND_INFO("TC58CVG0S3HRAIG", 0xC2, + SPINAND_INFO("TC58CVG0S3HRAIG", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xC2), NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -121,7 +122,8 @@ static const struct spinand_info toshiba_spinand_table[] = { SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, tx58cxgxsxraix_ecc_get_status)), /* 3.3V 2Gb (1st generation) */ - SPINAND_INFO("TC58CVG1S3HRAIG", 0xCB, + SPINAND_INFO("TC58CVG1S3HRAIG", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xCB), NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -131,7 +133,8 @@ static const struct spinand_info toshiba_spinand_table[] = { SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, tx58cxgxsxraix_ecc_get_status)), /* 3.3V 4Gb (1st generation) */ - SPINAND_INFO("TC58CVG2S0HRAIG", 0xCD, + SPINAND_INFO("TC58CVG2S0HRAIG", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xCD), NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -141,7 +144,8 @@ static const struct spinand_info toshiba_spinand_table[] = { SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, tx58cxgxsxraix_ecc_get_status)), /* 1.8V 1Gb (1st generation) */ - SPINAND_INFO("TC58CYG0S3HRAIG", 0xB2, + SPINAND_INFO("TC58CYG0S3HRAIG", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xB2), NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -151,7 +155,8 @@ static const struct spinand_info toshiba_spinand_table[] = { SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, tx58cxgxsxraix_ecc_get_status)), /* 1.8V 2Gb (1st generation) */ - SPINAND_INFO("TC58CYG1S3HRAIG", 0xBB, + SPINAND_INFO("TC58CYG1S3HRAIG", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBB), NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -161,7 +166,8 @@ static const struct spinand_info toshiba_spinand_table[] = { SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, tx58cxgxsxraix_ecc_get_status)), /* 1.8V 4Gb (1st generation) */ - SPINAND_INFO("TC58CYG2S0HRAIG", 0xBD, + SPINAND_INFO("TC58CYG2S0HRAIG", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBD), NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -176,7 +182,8 @@ static const struct spinand_info toshiba_spinand_table[] = { * QE_BIT. */ /* 3.3V 1Gb (2nd generation) */ - SPINAND_INFO("TC58CVG0S3HRAIJ", 0xE2, + SPINAND_INFO("TC58CVG0S3HRAIJ", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE2), NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -186,7 +193,8 @@ static const struct spinand_info toshiba_spinand_table[] = { SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, tx58cxgxsxraix_ecc_get_status)), /* 3.3V 2Gb (2nd generation) */ - SPINAND_INFO("TC58CVG1S3HRAIJ", 0xEB, + SPINAND_INFO("TC58CVG1S3HRAIJ", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xEB), NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -196,7 +204,8 @@ static const struct spinand_info toshiba_spinand_table[] = { SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, tx58cxgxsxraix_ecc_get_status)), /* 3.3V 4Gb (2nd generation) */ - SPINAND_INFO("TC58CVG2S0HRAIJ", 0xED, + SPINAND_INFO("TC58CVG2S0HRAIJ", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xED), NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -206,7 +215,8 @@ static const struct spinand_info toshiba_spinand_table[] = { SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, tx58cxgxsxraix_ecc_get_status)), /* 3.3V 8Gb (2nd generation) */ - SPINAND_INFO("TH58CVG3S0HRAIJ", 0xE4, + SPINAND_INFO("TH58CVG3S0HRAIJ", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4), NAND_MEMORG(1, 4096, 256, 64, 4096, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -216,7 +226,8 @@ static const struct spinand_info toshiba_spinand_table[] = { SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, tx58cxgxsxraix_ecc_get_status)), /* 1.8V 1Gb (2nd generation) */ - SPINAND_INFO("TC58CYG0S3HRAIJ", 0xD2, + SPINAND_INFO("TC58CYG0S3HRAIJ", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD2), NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -226,7 +237,8 @@ static const struct spinand_info toshiba_spinand_table[] = { SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, tx58cxgxsxraix_ecc_get_status)), /* 1.8V 2Gb (2nd generation) */ - SPINAND_INFO("TC58CYG1S3HRAIJ", 0xDB, + SPINAND_INFO("TC58CYG1S3HRAIJ", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xDB), NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -236,7 +248,8 @@ static const struct spinand_info toshiba_spinand_table[] = { SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, tx58cxgxsxraix_ecc_get_status)), /* 1.8V 4Gb (2nd generation) */ - SPINAND_INFO("TC58CYG2S0HRAIJ", 0xDD, + SPINAND_INFO("TC58CYG2S0HRAIJ", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xDD), NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -246,7 +259,8 @@ static const struct spinand_info toshiba_spinand_table[] = { SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, tx58cxgxsxraix_ecc_get_status)), /* 1.8V 8Gb (2nd generation) */ - SPINAND_INFO("TH58CYG3S0HRAIJ", 0xD4, + SPINAND_INFO("TH58CYG3S0HRAIJ", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD4), NAND_MEMORG(1, 4096, 256, 64, 4096, 1, 1, 1), NAND_ECCREQ(8, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -257,33 +271,13 @@ static const struct spinand_info toshiba_spinand_table[] = { tx58cxgxsxraix_ecc_get_status)), };
-static int toshiba_spinand_detect(struct spinand_device *spinand) -{ - u8 *id = spinand->id.data; - int ret; - - /* - * Toshiba SPI NAND read ID needs a dummy byte, - * so the first byte in id is garbage. - */ - if (id[1] != SPINAND_MFR_TOSHIBA) - return 0; - - ret = spinand_match_and_init(spinand, toshiba_spinand_table, - ARRAY_SIZE(toshiba_spinand_table), - id[2]); - if (ret) - return ret; - - return 1; -} - static const struct spinand_manufacturer_ops toshiba_spinand_manuf_ops = { - .detect = toshiba_spinand_detect, };
const struct spinand_manufacturer toshiba_spinand_manufacturer = { .id = SPINAND_MFR_TOSHIBA, .name = "Toshiba", + .chips = toshiba_spinand_table, + .nchips = ARRAY_SIZE(toshiba_spinand_table), .ops = &toshiba_spinand_manuf_ops, }; diff --git a/drivers/mtd/nand/spi/winbond.c b/drivers/mtd/nand/spi/winbond.c index 119fa135b1..84469f7a89 100644 --- a/drivers/mtd/nand/spi/winbond.c +++ b/drivers/mtd/nand/spi/winbond.c @@ -79,7 +79,8 @@ static int w25m02gv_select_target(struct spinand_device *spinand, }
static const struct spinand_info winbond_spinand_table[] = { - SPINAND_INFO("W25M02GV", 0xAB, + SPINAND_INFO("W25M02GV", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xab), NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 2), NAND_ECCREQ(1, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -88,7 +89,8 @@ static const struct spinand_info winbond_spinand_table[] = { 0, SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL), SPINAND_SELECT_TARGET(w25m02gv_select_target)), - SPINAND_INFO("W25N01GV", 0xAA, + SPINAND_INFO("W25N01GV", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xaa), NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1), NAND_ECCREQ(1, 512), SPINAND_INFO_OP_VARIANTS(&read_cache_variants, @@ -98,31 +100,6 @@ static const struct spinand_info winbond_spinand_table[] = { SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL)), };
-/** - * winbond_spinand_detect - initialize device related part in spinand_device - * struct if it is a Winbond device. - * @spinand: SPI NAND device structure - */ -static int winbond_spinand_detect(struct spinand_device *spinand) -{ - u8 *id = spinand->id.data; - int ret; - - /* - * Winbond SPI NAND read ID need a dummy byte, - * so the first byte in raw_id is dummy. - */ - if (id[1] != SPINAND_MFR_WINBOND) - return 0; - - ret = spinand_match_and_init(spinand, winbond_spinand_table, - ARRAY_SIZE(winbond_spinand_table), id[2]); - if (ret) - return ret; - - return 1; -} - static int winbond_spinand_init(struct spinand_device *spinand) { struct nand_device *nand = spinand_to_nand(spinand); @@ -142,12 +119,13 @@ static int winbond_spinand_init(struct spinand_device *spinand) }
static const struct spinand_manufacturer_ops winbond_spinand_manuf_ops = { - .detect = winbond_spinand_detect, .init = winbond_spinand_init, };
const struct spinand_manufacturer winbond_spinand_manufacturer = { .id = SPINAND_MFR_WINBOND, .name = "Winbond", + .chips = winbond_spinand_table, + .nchips = ARRAY_SIZE(winbond_spinand_table), .ops = &winbond_spinand_manuf_ops, }; diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h index 15bcd59f34..1ae4dc6b15 100644 --- a/include/linux/mtd/spinand.h +++ b/include/linux/mtd/spinand.h @@ -39,9 +39,9 @@ SPI_MEM_OP_NO_DUMMY, \ SPI_MEM_OP_NO_DATA)
-#define SPINAND_READID_OP(ndummy, buf, len) \ +#define SPINAND_READID_OP(naddr, ndummy, buf, len) \ SPI_MEM_OP(SPI_MEM_OP_CMD(0x9f, 1), \ - SPI_MEM_OP_NO_ADDR, \ + SPI_MEM_OP_ADDR(naddr, 0, 1), \ SPI_MEM_OP_DUMMY(ndummy, 1), \ SPI_MEM_OP_DATA_IN(len, buf, 1))
@@ -153,37 +153,46 @@ struct spinand_device; * @data: buffer containing the id bytes. Currently 4 bytes large, but can * be extended if required * @len: ID length - * - * struct_spinand_id->data contains all bytes returned after a READ_ID command, - * including dummy bytes if the chip does not emit ID bytes right after the - * READ_ID command. The responsibility to extract real ID bytes is left to - * struct_manufacurer_ops->detect(). */ struct spinand_id { u8 data[SPINAND_MAX_ID_LEN]; int len; };
+enum spinand_readid_method { + SPINAND_READID_METHOD_OPCODE, + SPINAND_READID_METHOD_OPCODE_ADDR, + SPINAND_READID_METHOD_OPCODE_DUMMY, +}; + +/** + * struct spinand_devid - SPI NAND device id structure + * @id: device id of current chip + * @len: number of bytes in device id + * @method: method to read chip id + * There are 3 possible variants: + * SPINAND_READID_METHOD_OPCODE: chip id is returned immediately + * after read_id opcode. + * SPINAND_READID_METHOD_OPCODE_ADDR: chip id is returned after + * read_id opcode + 1-byte address. + * SPINAND_READID_METHOD_OPCODE_DUMMY: chip id is returned after + * read_id opcode + 1 dummy byte. + */ +struct spinand_devid { + const u8 *id; + const u8 len; + const enum spinand_readid_method method; +}; + /** * struct manufacurer_ops - SPI NAND manufacturer specific operations - * @detect: detect a SPI NAND device. Every time a SPI NAND device is probed - * the core calls the struct_manufacurer_ops->detect() hook of each - * registered manufacturer until one of them return 1. Note that - * the first thing to check in this hook is that the manufacturer ID - * in struct_spinand_device->id matches the manufacturer whose - * ->detect() hook has been called. Should return 1 if there's a - * match, 0 if the manufacturer ID does not match and a negative - * error code otherwise. When true is returned, the core assumes - * that properties of the NAND chip (spinand->base.memorg and - * spinand->base.eccreq) have been filled * @init: initialize a SPI NAND device * @cleanup: cleanup a SPI NAND device * * Each SPI NAND manufacturer driver should implement this interface so that - * NAND chips coming from this vendor can be detected and initialized properly. + * NAND chips coming from this vendor can be initialized properly. */ struct spinand_manufacturer_ops { - int (*detect)(struct spinand_device *spinand); int (*init)(struct spinand_device *spinand); void (*cleanup)(struct spinand_device *spinand); }; @@ -192,11 +201,16 @@ struct spinand_manufacturer_ops { * struct spinand_manufacturer - SPI NAND manufacturer instance * @id: manufacturer ID * @name: manufacturer name + * @devid_len: number of bytes in device ID + * @chips: supported SPI NANDs under current manufacturer + * @nchips: number of SPI NANDs available in chips array * @ops: manufacturer operations */ struct spinand_manufacturer { u8 id; char *name; + const struct spinand_info *chips; + const size_t nchips; const struct spinand_manufacturer_ops *ops; };
@@ -268,7 +282,7 @@ struct spinand_ecc_info { */ struct spinand_info { const char *model; - u8 devid; + struct spinand_devid devid; u32 flags; struct nand_memory_organization memorg; struct nand_ecc_req eccreq; @@ -282,6 +296,13 @@ struct spinand_info { unsigned int target); };
+#define SPINAND_ID(__method, ...) \ + { \ + .id = (const u8[]){ __VA_ARGS__ }, \ + .len = sizeof((u8[]){ __VA_ARGS__ }), \ + .method = __method, \ + } + #define SPINAND_INFO_OP_VARIANTS(__read, __write, __update) \ { \ .read_cache = __read, \ @@ -440,9 +461,10 @@ static inline void spinand_set_ofnode(struct spinand_device *spinand, } #endif /* __UBOOT__ */
-int spinand_match_and_init(struct spinand_device *dev, +int spinand_match_and_init(struct spinand_device *spinand, const struct spinand_info *table, - unsigned int table_size, u8 devid); + unsigned int table_size, + enum spinand_readid_method rdid_method);
int spinand_upd_cfg(struct spinand_device *spinand, u8 mask, u8 val); int spinand_select_target(struct spinand_device *spinand, unsigned int target);