diff options
Diffstat (limited to 'drivers/mtd')
48 files changed, 831 insertions, 599 deletions
diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c index adfa74c1bc45..8057f52a45b7 100644 --- a/drivers/mtd/bcm47xxpart.c +++ b/drivers/mtd/bcm47xxpart.c @@ -199,6 +199,17 @@ static int bcm47xxpart_parse(struct mtd_info *master, continue; } + /* + * New (ARM?) devices may have NVRAM in some middle block. Last + * block will be checked later, so skip it. + */ + if (offset != master->size - blocksize && + buf[0x000 / 4] == NVRAM_HEADER) { + bcm47xxpart_add_part(&parts[curr_part++], "nvram", + offset, 0); + continue; + } + /* Read middle of the block */ if (mtd_read(master, offset + 0x8000, 0x4, &bytes_read, (uint8_t *)buf) < 0) { diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index a7543ba3e190..3096f3ded3ad 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -2590,6 +2590,8 @@ static void cfi_intelext_resume(struct mtd_info *mtd) /* Go to known state. Chip may have been power cycled */ if (chip->state == FL_PM_SUSPENDED) { + /* Refresh LH28F640BF Partition Config. Register */ + fixup_LH28F640BF(mtd); map_write(map, CMD(0xFF), cfi->chips[i].start); chip->oldstate = chip->state = FL_READY; wake_up(&chip->wq); diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 46c4643b7a07..c50d8cf0f60d 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -2033,6 +2033,8 @@ static int cfi_amdstd_panic_wait(struct map_info *map, struct flchip *chip, udelay(1); } + + retries--; } /* the chip never became ready */ diff --git a/drivers/mtd/devices/Makefile b/drivers/mtd/devices/Makefile index c68868f60588..f0b0e611d1d6 100644 --- a/drivers/mtd/devices/Makefile +++ b/drivers/mtd/devices/Makefile @@ -12,7 +12,6 @@ obj-$(CONFIG_MTD_LART) += lart.o obj-$(CONFIG_MTD_BLOCK2MTD) += block2mtd.o obj-$(CONFIG_MTD_DATAFLASH) += mtd_dataflash.o obj-$(CONFIG_MTD_M25P80) += m25p80.o -obj-$(CONFIG_MTD_NAND_OMAP_BCH) += elm.o obj-$(CONFIG_MTD_SPEAR_SMI) += spear_smi.o obj-$(CONFIG_MTD_SST25L) += sst25l.o obj-$(CONFIG_MTD_BCM47XXSFLASH) += bcm47xxsflash.o diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c index 91a169c44b39..21cc4b66feaa 100644 --- a/drivers/mtd/devices/docg3.c +++ b/drivers/mtd/devices/docg3.c @@ -1697,16 +1697,16 @@ static int dbg_asicmode_show(struct seq_file *s, void *p) switch (mode) { case DOC_ASICMODE_RESET: - pos += seq_printf(s, "reset"); + pos += seq_puts(s, "reset"); break; case DOC_ASICMODE_NORMAL: - pos += seq_printf(s, "normal"); + pos += seq_puts(s, "normal"); break; case DOC_ASICMODE_POWERDOWN: - pos += seq_printf(s, "powerdown"); + pos += seq_puts(s, "powerdown"); break; } - pos += seq_printf(s, ")\n"); + pos += seq_puts(s, ")\n"); return pos; } DEBUGFS_RO_ATTR(asic_mode, dbg_asicmode_show); @@ -1745,22 +1745,22 @@ static int dbg_protection_show(struct seq_file *s, void *p) pos += seq_printf(s, "Protection = 0x%02x (", protect); if (protect & DOC_PROTECT_FOUNDRY_OTP_LOCK) - pos += seq_printf(s, "FOUNDRY_OTP_LOCK,"); + pos += seq_puts(s, "FOUNDRY_OTP_LOCK,"); if (protect & DOC_PROTECT_CUSTOMER_OTP_LOCK) - pos += seq_printf(s, "CUSTOMER_OTP_LOCK,"); + pos += seq_puts(s, "CUSTOMER_OTP_LOCK,"); if (protect & DOC_PROTECT_LOCK_INPUT) - pos += seq_printf(s, "LOCK_INPUT,"); + pos += seq_puts(s, "LOCK_INPUT,"); if (protect & DOC_PROTECT_STICKY_LOCK) - pos += seq_printf(s, "STICKY_LOCK,"); + pos += seq_puts(s, "STICKY_LOCK,"); if (protect & DOC_PROTECT_PROTECTION_ENABLED) - pos += seq_printf(s, "PROTECTION ON,"); + pos += seq_puts(s, "PROTECTION ON,"); if (protect & DOC_PROTECT_IPL_DOWNLOAD_LOCK) - pos += seq_printf(s, "IPL_DOWNLOAD_LOCK,"); + pos += seq_puts(s, "IPL_DOWNLOAD_LOCK,"); if (protect & DOC_PROTECT_PROTECTION_ERROR) - pos += seq_printf(s, "PROTECT_ERR,"); + pos += seq_puts(s, "PROTECT_ERR,"); else - pos += seq_printf(s, "NO_PROTECT_ERR"); - pos += seq_printf(s, ")\n"); + pos += seq_puts(s, "NO_PROTECT_ERR"); + pos += seq_puts(s, ")\n"); pos += seq_printf(s, "DPS0 = 0x%02x : " "Protected area [0x%x - 0x%x] : OTP=%d, READ=%d, " diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index ed7e0a1bed3c..ed827cf894e4 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -196,8 +196,11 @@ static int m25p_probe(struct spi_device *spi) struct m25p *flash; struct spi_nor *nor; enum read_mode mode = SPI_NOR_NORMAL; + char *flash_name = NULL; int ret; + data = dev_get_platdata(&spi->dev); + flash = devm_kzalloc(&spi->dev, sizeof(*flash), GFP_KERNEL); if (!flash) return -ENOMEM; @@ -223,11 +226,24 @@ static int m25p_probe(struct spi_device *spi) mode = SPI_NOR_QUAD; else if (spi->mode & SPI_RX_DUAL) mode = SPI_NOR_DUAL; - ret = spi_nor_scan(nor, spi_get_device_id(spi), mode); + + if (data && data->name) + flash->mtd.name = data->name; + + /* For some (historical?) reason many platforms provide two different + * names in flash_platform_data: "name" and "type". Quite often name is + * set to "m25p80" and then "type" provides a real chip name. + * If that's the case, respect "type" and ignore a "name". + */ + if (data && data->type) + flash_name = data->type; + else + flash_name = spi->modalias; + + ret = spi_nor_scan(nor, flash_name, mode); if (ret) return ret; - data = dev_get_platdata(&spi->dev); ppdata.of_node = spi->dev.of_node; return mtd_device_parse_register(&flash->mtd, NULL, &ppdata, @@ -245,12 +261,62 @@ static int m25p_remove(struct spi_device *spi) } +/* + * XXX This needs to be kept in sync with spi_nor_ids. We can't share + * it with spi-nor, because if this is built as a module then modpost + * won't be able to read it and add appropriate aliases. + */ +static const struct spi_device_id m25p_ids[] = { + {"at25fs010"}, {"at25fs040"}, {"at25df041a"}, {"at25df321a"}, + {"at25df641"}, {"at26f004"}, {"at26df081a"}, {"at26df161a"}, + {"at26df321"}, {"at45db081d"}, + {"en25f32"}, {"en25p32"}, {"en25q32b"}, {"en25p64"}, + {"en25q64"}, {"en25qh128"}, {"en25qh256"}, + {"f25l32pa"}, + {"mr25h256"}, {"mr25h10"}, + {"gd25q32"}, {"gd25q64"}, + {"160s33b"}, {"320s33b"}, {"640s33b"}, + {"mx25l2005a"}, {"mx25l4005a"}, {"mx25l8005"}, {"mx25l1606e"}, + {"mx25l3205d"}, {"mx25l3255e"}, {"mx25l6405d"}, {"mx25l12805d"}, + {"mx25l12855e"},{"mx25l25635e"},{"mx25l25655e"},{"mx66l51235l"}, + {"mx66l1g55g"}, + {"n25q064"}, {"n25q128a11"}, {"n25q128a13"}, {"n25q256a"}, + {"n25q512a"}, {"n25q512ax3"}, {"n25q00"}, + {"pm25lv512"}, {"pm25lv010"}, {"pm25lq032"}, + {"s25sl032p"}, {"s25sl064p"}, {"s25fl256s0"}, {"s25fl256s1"}, + {"s25fl512s"}, {"s70fl01gs"}, {"s25sl12800"}, {"s25sl12801"}, + {"s25fl129p0"}, {"s25fl129p1"}, {"s25sl004a"}, {"s25sl008a"}, + {"s25sl016a"}, {"s25sl032a"}, {"s25sl064a"}, {"s25fl008k"}, + {"s25fl016k"}, {"s25fl064k"}, + {"sst25vf040b"},{"sst25vf080b"},{"sst25vf016b"},{"sst25vf032b"}, + {"sst25vf064c"},{"sst25wf512"}, {"sst25wf010"}, {"sst25wf020"}, + {"sst25wf040"}, + {"m25p05"}, {"m25p10"}, {"m25p20"}, {"m25p40"}, + {"m25p80"}, {"m25p16"}, {"m25p32"}, {"m25p64"}, + {"m25p128"}, {"n25q032"}, + {"m25p05-nonjedec"}, {"m25p10-nonjedec"}, {"m25p20-nonjedec"}, + {"m25p40-nonjedec"}, {"m25p80-nonjedec"}, {"m25p16-nonjedec"}, + {"m25p32-nonjedec"}, {"m25p64-nonjedec"}, {"m25p128-nonjedec"}, + {"m45pe10"}, {"m45pe80"}, {"m45pe16"}, + {"m25pe20"}, {"m25pe80"}, {"m25pe16"}, + {"m25px16"}, {"m25px32"}, {"m25px32-s0"}, {"m25px32-s1"}, + {"m25px64"}, + {"w25x10"}, {"w25x20"}, {"w25x40"}, {"w25x80"}, + {"w25x16"}, {"w25x32"}, {"w25q32"}, {"w25q32dw"}, + {"w25x64"}, {"w25q64"}, {"w25q128"}, {"w25q80"}, + {"w25q80bl"}, {"w25q128"}, {"w25q256"}, {"cat25c11"}, + {"cat25c03"}, {"cat25c09"}, {"cat25c17"}, {"cat25128"}, + { }, +}; +MODULE_DEVICE_TABLE(spi, m25p_ids); + + static struct spi_driver m25p80_driver = { .driver = { .name = "m25p80", .owner = THIS_MODULE, }, - .id_table = spi_nor_ids, + .id_table = m25p_ids, .probe = m25p_probe, .remove = m25p_remove, diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 21b2874a303b..ba801d2c6dcc 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -249,7 +249,7 @@ config MTD_CFI_FLAGADM config MTD_SOLUTIONENGINE tristate "CFI Flash device mapped on Hitachi SolutionEngine" - depends on SUPERH && SOLUTION_ENGINE && MTD_CFI && MTD_REDBOOT_PARTS + depends on SOLUTION_ENGINE && MTD_CFI && MTD_REDBOOT_PARTS help This enables access to the flash chips on the Hitachi SolutionEngine and similar boards. Say 'Y' if you are building a kernel for such a board. diff --git a/drivers/mtd/maps/gpio-addr-flash.c b/drivers/mtd/maps/gpio-addr-flash.c index a4c477b9fdd6..2fb346091af2 100644 --- a/drivers/mtd/maps/gpio-addr-flash.c +++ b/drivers/mtd/maps/gpio-addr-flash.c @@ -99,22 +99,28 @@ static map_word gf_read(struct map_info *map, unsigned long ofs) * @from: flash offset to copy from * @len: how much to copy * - * We rely on the MTD layer to chunk up copies such that a single request here - * will not cross a window size. This allows us to only wiggle the GPIOs once - * before falling back to a normal memcpy. Reading the higher layer code shows - * that this is indeed the case, but add a BUG_ON() to future proof. + * The "from" region may straddle more than one window, so toggle the GPIOs for + * each window region before reading its data. */ static void gf_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) { struct async_state *state = gf_map_info_to_state(map); - gf_set_gpios(state, from); + int this_len; - /* BUG if operation crosses the win_size */ - BUG_ON(!((from + len) % state->win_size <= (from + len))); + while (len) { + if ((from % state->win_size) + len > state->win_size) + this_len = state->win_size - (from % state->win_size); + else + this_len = len; - /* operation does not cross the win_size, so one shot it */ - memcpy_fromio(to, map->virt + (from % state->win_size), len); + gf_set_gpios(state, from); + memcpy_fromio(to, map->virt + (from % state->win_size), + this_len); + len -= this_len; + from += this_len; + to += this_len; + } } /** @@ -147,13 +153,21 @@ static void gf_copy_to(struct map_info *map, unsigned long to, { struct async_state *state = gf_map_info_to_state(map); - gf_set_gpios(state, to); + int this_len; + + while (len) { + if ((to % state->win_size) + len > state->win_size) + this_len = state->win_size - (to % state->win_size); + else + this_len = len; - /* BUG if operation crosses the win_size */ - BUG_ON(!((to + len) % state->win_size <= (to + len))); + gf_set_gpios(state, to); + memcpy_toio(map->virt + (to % state->win_size), from, len); - /* operation does not cross the win_size, so one shot it */ - memcpy_toio(map->virt + (to % state->win_size), from, len); + len -= this_len; + to += this_len; + from += this_len; + } } static const char * const part_probe_types[] = { diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c index a3cfad392ed6..af747af5eee9 100644 --- a/drivers/mtd/maps/pcmciamtd.c +++ b/drivers/mtd/maps/pcmciamtd.c @@ -89,7 +89,7 @@ static caddr_t remap_window(struct map_info *map, unsigned long to) if (!pcmcia_dev_present(dev->p_dev)) { pr_debug("device removed\n"); - return 0; + return NULL; } offset = to & ~(dev->win_size-1); diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c index 217c25d7381b..c1d21cb501ca 100644 --- a/drivers/mtd/maps/physmap_of.c +++ b/drivers/mtd/maps/physmap_of.c @@ -103,7 +103,7 @@ static struct mtd_info *obsolete_probe(struct platform_device *dev, if (strcmp(of_probe, "ROM") != 0) dev_warn(&dev->dev, "obsolete_probe: don't know probe " "type '%s', mapping as rom\n", of_probe); - return do_map_probe("mtd_rom", map); + return do_map_probe("map_rom", map); } } @@ -340,6 +340,10 @@ static struct of_device_id of_flash_match[] = { .data = (void *)"map_ram", }, { + .compatible = "mtd-rom", + .data = (void *)"map_rom", + }, + { .type = "rom", .compatible = "direct-mapped" }, diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 43e30992a369..d08229eb44d8 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -417,6 +417,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) blk_queue_logical_block_size(new->rq, tr->blksize); queue_flag_set_unlocked(QUEUE_FLAG_NONROT, new->rq); + queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, new->rq); if (tr->discard) { queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, new->rq); diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index a0f54e80670c..53563955931b 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -549,6 +549,9 @@ static int mtdchar_blkpg_ioctl(struct mtd_info *mtd, if (mtd_is_partition(mtd)) return -EINVAL; + /* Sanitize user input */ + p.devname[BLKPG_DEVNAMELTH - 1] = '\0'; + return mtd_add_partition(mtd, p.devname, p.start, p.length); case BLKPG_DEL_PARTITION: diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index e4831b4159db..4c611871d7e6 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -105,12 +105,11 @@ static LIST_HEAD(mtd_notifiers); */ static void mtd_release(struct device *dev) { - struct mtd_info __maybe_unused *mtd = dev_get_drvdata(dev); + struct mtd_info *mtd = dev_get_drvdata(dev); dev_t index = MTD_DEVT(mtd->index); - /* remove /dev/mtdXro node if needed */ - if (index) - device_destroy(&mtd_class, index + 1); + /* remove /dev/mtdXro node */ + device_destroy(&mtd_class, index + 1); } static int mtd_cls_suspend(struct device *dev, pm_message_t state) @@ -442,10 +441,8 @@ int add_mtd_device(struct mtd_info *mtd) if (device_register(&mtd->dev) != 0) goto fail_added; - if (MTD_DEVT(i)) - device_create(&mtd_class, mtd->dev.parent, - MTD_DEVT(i) + 1, - NULL, "mtd%dro", i); + device_create(&mtd_class, mtd->dev.parent, MTD_DEVT(i) + 1, NULL, + "mtd%dro", i); pr_debug("mtd: Giving out device %d to %s\n", i, mtd->name); /* No need to get a refcount on the module containing @@ -778,7 +775,7 @@ EXPORT_SYMBOL_GPL(__put_mtd_device); */ int mtd_erase(struct mtd_info *mtd, struct erase_info *instr) { - if (instr->addr > mtd->size || instr->len > mtd->size - instr->addr) + if (instr->addr >= mtd->size || instr->len > mtd->size - instr->addr) return -EINVAL; if (!(mtd->flags & MTD_WRITEABLE)) return -EROFS; @@ -804,7 +801,7 @@ int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, *phys = 0; if (!mtd->_point) return -EOPNOTSUPP; - if (from < 0 || from > mtd->size || len > mtd->size - from) + if (from < 0 || from >= mtd->size || len > mtd->size - from) return -EINVAL; if (!len) return 0; @@ -817,7 +814,7 @@ int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len) { if (!mtd->_point) return -EOPNOTSUPP; - if (from < 0 || from > mtd->size || len > mtd->size - from) + if (from < 0 || from >= mtd->size || len > mtd->size - from) return -EINVAL; if (!len) return 0; @@ -835,7 +832,7 @@ unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, unsigned long len, { if (!mtd->_get_unmapped_area) return -EOPNOTSUPP; - if (offset > mtd->size || len > mtd->size - offset) + if (offset >= mtd->size || len > mtd->size - offset) return -EINVAL; return mtd->_get_unmapped_area(mtd, len, offset, flags); } @@ -846,7 +843,7 @@ int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, { int ret_code; *retlen = 0; - if (from < 0 || from > mtd->size || len > mtd->size - from) + if (from < 0 || from >= mtd->size || len > mtd->size - from) return -EINVAL; if (!len) return 0; @@ -869,7 +866,7 @@ int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf) { *retlen = 0; - if (to < 0 || to > mtd->size || len > mtd->size - to) + if (to < 0 || to >= mtd->size || len > mtd->size - to) return -EINVAL; if (!mtd->_write || !(mtd->flags & MTD_WRITEABLE)) return -EROFS; @@ -892,7 +889,7 @@ int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, *retlen = 0; if (!mtd->_panic_write) return -EOPNOTSUPP; - if (to < 0 || to > mtd->size || len > mtd->size - to) + if (to < 0 || to >= mtd->size || len > mtd->size - to) return -EINVAL; if (!(mtd->flags & MTD_WRITEABLE)) return -EROFS; @@ -1011,7 +1008,7 @@ int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) { if (!mtd->_lock) return -EOPNOTSUPP; - if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs) + if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs) return -EINVAL; if (!len) return 0; @@ -1023,7 +1020,7 @@ int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) { if (!mtd->_unlock) return -EOPNOTSUPP; - if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs) + if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs) return -EINVAL; if (!len) return 0; @@ -1035,7 +1032,7 @@ int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len) { if (!mtd->_is_locked) return -EOPNOTSUPP; - if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs) + if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs) return -EINVAL; if (!len) return 0; @@ -1045,7 +1042,7 @@ EXPORT_SYMBOL_GPL(mtd_is_locked); int mtd_block_isreserved(struct mtd_info *mtd, loff_t ofs) { - if (ofs < 0 || ofs > mtd->size) + if (ofs < 0 || ofs >= mtd->size) return -EINVAL; if (!mtd->_block_isreserved) return 0; @@ -1055,7 +1052,7 @@ EXPORT_SYMBOL_GPL(mtd_block_isreserved); int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs) { - if (ofs < 0 || ofs > mtd->size) + if (ofs < 0 || ofs >= mtd->size) return -EINVAL; if (!mtd->_block_isbad) return 0; @@ -1067,7 +1064,7 @@ int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs) { if (!mtd->_block_markbad) return -EOPNOTSUPP; - if (ofs < 0 || ofs > mtd->size) + if (ofs < 0 || ofs >= mtd->size) return -EINVAL; if (!(mtd->flags & MTD_WRITEABLE)) return -EROFS; diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c index 8b33b26eb12b..fc8b3d16cce7 100644 --- a/drivers/mtd/mtdswap.c +++ b/drivers/mtd/mtdswap.c @@ -145,7 +145,7 @@ struct mtdswap_dev { struct mtdswap_oobdata { __le16 magic; __le32 count; -} __attribute__((packed)); +} __packed; #define MTDSWAP_MAGIC_CLEAN 0x2095 #define MTDSWAP_MAGIC_DIRTY (MTDSWAP_MAGIC_CLEAN + 1) @@ -1287,7 +1287,7 @@ static int mtdswap_show(struct seq_file *s, void *data) seq_printf(s, "total erasures: %lu\n", sum); - seq_printf(s, "\n"); + seq_puts(s, "\n"); seq_printf(s, "mtdswap_readsect count: %llu\n", d->sect_read_count); seq_printf(s, "mtdswap_writesect count: %llu\n", d->sect_write_count); @@ -1296,7 +1296,7 @@ static int mtdswap_show(struct seq_file *s, void *data) seq_printf(s, "mtd write count: %llu\n", d->mtd_write_count); seq_printf(s, "discarded pages count: %llu\n", d->discard_page_count); - seq_printf(s, "\n"); + seq_puts(s, "\n"); seq_printf(s, "total pages: %u\n", pages); seq_printf(s, "pages mapped: %u\n", mapped); @@ -1474,7 +1474,7 @@ static void mtdswap_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) } eblocks = mtd_div_by_eb(use_size, mtd); - use_size = eblocks * mtd->erasesize; + use_size = (uint64_t)eblocks * mtd->erasesize; bad_blocks = mtdswap_badblocks(mtd, use_size); eavailable = eblocks - bad_blocks; diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index f1cf503517fd..dd10646982ae 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -96,7 +96,7 @@ config MTD_NAND_OMAP2 config MTD_NAND_OMAP_BCH depends on MTD_NAND_OMAP2 - tristate "Support hardware based BCH error correction" + bool "Support hardware based BCH error correction" default n select BCH help @@ -104,7 +104,10 @@ config MTD_NAND_OMAP_BCH locate and correct errors when using BCH ECC scheme. This offloads the cpu from doing ECC error searching and correction. However some legacy OMAP families like OMAP2xxx, OMAP3xxx do not have ELM engine - so they should not enable this config symbol. + so this is optional for them. + +config MTD_NAND_OMAP_BCH_BUILD + def_tristate MTD_NAND_OMAP2 && MTD_NAND_OMAP_BCH config MTD_NAND_IDS tristate diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index a035e7cc6d46..9c847e469ca7 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -27,6 +27,7 @@ obj-$(CONFIG_MTD_NAND_NDFC) += ndfc.o obj-$(CONFIG_MTD_NAND_ATMEL) += atmel_nand.o obj-$(CONFIG_MTD_NAND_GPIO) += gpio.o obj-$(CONFIG_MTD_NAND_OMAP2) += omap2.o +obj-$(CONFIG_MTD_NAND_OMAP_BCH_BUILD) += omap_elm.o obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o obj-$(CONFIG_MTD_NAND_PXA3xx) += pxa3xx_nand.o obj-$(CONFIG_MTD_NAND_TMIO) += tmio_nand.o diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index e321c564ff05..19d1e9d17bf9 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -27,6 +27,7 @@ * */ +#include <linux/clk.h> #include <linux/dma-mapping.h> #include <linux/slab.h> #include <linux/module.h> @@ -96,6 +97,8 @@ struct atmel_nfc { bool use_nfc_sram; bool write_by_sram; + struct clk *clk; + bool is_initialized; struct completion comp_ready; struct completion comp_cmd_done; @@ -128,8 +131,6 @@ struct atmel_nand_host { u32 pmecc_lookup_table_offset_512; u32 pmecc_lookup_table_offset_1024; - int pmecc_bytes_per_sector; - int pmecc_sector_number; int pmecc_degree; /* Degree of remainders */ int pmecc_cw_len; /* Length of codeword */ @@ -841,7 +842,7 @@ static void pmecc_correct_data(struct mtd_info *mtd, uint8_t *buf, uint8_t *ecc, pos, bit_pos, err_byte, *(buf + byte_pos)); } else { /* Bit flip in OOB area */ - tmp = sector_num * host->pmecc_bytes_per_sector + tmp = sector_num * nand_chip->ecc.bytes + (byte_pos - sector_size); err_byte = ecc[tmp]; ecc[tmp] ^= (1 << bit_pos); @@ -874,7 +875,7 @@ static int pmecc_correction(struct mtd_info *mtd, u32 pmecc_stat, uint8_t *buf, return 0; normal_check: - for (i = 0; i < host->pmecc_sector_number; i++) { + for (i = 0; i < nand_chip->ecc.steps; i++) { err_nbr = 0; if (pmecc_stat & 0x1) { buf_pos = buf + i * host->pmecc_sector_size; @@ -890,7 +891,7 @@ normal_check: return -EIO; } else { pmecc_correct_data(mtd, buf_pos, ecc, i, - host->pmecc_bytes_per_sector, err_nbr); + nand_chip->ecc.bytes, err_nbr); mtd->ecc_stats.corrected += err_nbr; total_err += err_nbr; } @@ -984,11 +985,11 @@ static int atmel_nand_pmecc_write_page(struct mtd_info *mtd, cpu_relax(); } - for (i = 0; i < host->pmecc_sector_number; i++) { - for (j = 0; j < host->pmecc_bytes_per_sector; j++) { + for (i = 0; i < chip->ecc.steps; i++) { + for (j = 0; j < chip->ecc.bytes; j++) { int pos; - pos = i * host->pmecc_bytes_per_sector + j; + pos = i * chip->ecc.bytes + j; chip->oob_poi[eccpos[pos]] = pmecc_readb_ecc_relaxed(host->ecc, i, j); } @@ -1031,7 +1032,7 @@ static void atmel_pmecc_core_init(struct mtd_info *mtd) else if (host->pmecc_sector_size == 1024) val |= PMECC_CFG_SECTOR1024; - switch (host->pmecc_sector_number) { + switch (nand_chip->ecc.steps) { case 1: val |= PMECC_CFG_PAGE_1SECTOR; break; @@ -1148,7 +1149,6 @@ static int atmel_pmecc_nand_init_params(struct platform_device *pdev, host->ecc = devm_ioremap_resource(&pdev->dev, regs); if (IS_ERR(host->ecc)) { - dev_err(host->dev, "ioremap failed\n"); err_no = PTR_ERR(host->ecc); goto err; } @@ -1156,8 +1156,6 @@ static int atmel_pmecc_nand_init_params(struct platform_device *pdev, regs_pmerr = platform_get_resource(pdev, IORESOURCE_MEM, 2); host->pmerrloc_base = devm_ioremap_resource(&pdev->dev, regs_pmerr); if (IS_ERR(host->pmerrloc_base)) { - dev_err(host->dev, - "Can not get I/O resource for PMECC ERRLOC controller!\n"); err_no = PTR_ERR(host->pmerrloc_base); goto err; } @@ -1165,7 +1163,6 @@ static int atmel_pmecc_nand_init_params(struct platform_device *pdev, regs_rom = platform_get_resource(pdev, IORESOURCE_MEM, 3); host->pmecc_rom_base = devm_ioremap_resource(&pdev->dev, regs_rom); if (IS_ERR(host->pmecc_rom_base)) { - dev_err(host->dev, "Can not get I/O resource for ROM!\n"); err_no = PTR_ERR(host->pmecc_rom_base); goto err; } @@ -1174,22 +1171,29 @@ static int atmel_pmecc_nand_init_params(struct platform_device *pdev, /* set ECC page size and oob layout */ switch (mtd->writesize) { + case 512: + case 1024: case 2048: + case 4096: + case 8192: + if (sector_size > mtd->writesize) { + dev_err(host->dev, "pmecc sector size is bigger than the page size!\n"); + err_no = -EINVAL; + goto err; + } + host->pmecc_degree = (sector_size == 512) ? PMECC_GF_DIMENSION_13 : PMECC_GF_DIMENSION_14; host->pmecc_cw_len = (1 << host->pmecc_degree) - 1; - host->pmecc_sector_number = mtd->writesize / sector_size; - host->pmecc_bytes_per_sector = pmecc_get_ecc_bytes( - cap, sector_size); host->pmecc_alpha_to = pmecc_get_alpha_to(host); host->pmecc_index_of = host->pmecc_rom_base + host->pmecc_lookup_table_offset; - nand_chip->ecc.steps = host->pmecc_sector_number; nand_chip->ecc.strength = cap; - nand_chip->ecc.bytes = host->pmecc_bytes_per_sector; - nand_chip->ecc.total = host->pmecc_bytes_per_sector * - host->pmecc_sector_number; + nand_chip->ecc.bytes = pmecc_get_ecc_bytes(cap, sector_size); + nand_chip->ecc.steps = mtd->writesize / sector_size; + nand_chip->ecc.total = nand_chip->ecc.bytes * + nand_chip->ecc.steps; if (nand_chip->ecc.total > mtd->oobsize - 2) { dev_err(host->dev, "No room for ECC bytes\n"); err_no = -EINVAL; @@ -1201,13 +1205,9 @@ static int atmel_pmecc_nand_init_params(struct platform_device *pdev, nand_chip->ecc.layout = &atmel_pmecc_oobinfo; break; - case 512: - case 1024: - case 4096: - /* TODO */ + default: dev_warn(host->dev, "Unsupported page size for PMECC, use Software ECC\n"); - default: /* page size not handled by HW ECC */ /* switching back to soft ECC */ nand_chip->ecc.mode = NAND_ECC_SOFT; @@ -1530,10 +1530,8 @@ static int atmel_hw_nand_init_params(struct platform_device *pdev, } host->ecc = devm_ioremap_resource(&pdev->dev, regs); - if (IS_ERR(host->ecc)) { - dev_err(host->dev, "ioremap failed\n"); + if (IS_ERR(host->ecc)) return PTR_ERR(host->ecc); - } /* ECC is calculated for the whole page (1 step) */ nand_chip->ecc.size = mtd->writesize; @@ -1907,15 +1905,7 @@ static int nfc_sram_write_page(struct mtd_info *mtd, struct nand_chip *chip, if (offset || (data_len < mtd->writesize)) return -EINVAL; - cfg = nfc_readl(host->nfc->hsmc_regs, CFG); len = mtd->writesize; - - if (unlikely(raw)) { - len += mtd->oobsize; - nfc_writel(host->nfc->hsmc_regs, CFG, cfg | NFC_CFG_WSPARE); - } else - nfc_writel(host->nfc->hsmc_regs, CFG, cfg & ~NFC_CFG_WSPARE); - /* Copy page data to sram that will write to nand via NFC */ if (use_dma) { if (atmel_nand_dma_op(mtd, (void *)buf, len, 0) != 0) @@ -1925,6 +1915,15 @@ static int nfc_sram_write_page(struct mtd_info *mtd, struct nand_chip *chip, memcpy32_toio(sram, buf, len); } + cfg = nfc_readl(host->nfc->hsmc_regs, CFG); + if (unlikely(raw) && oob_required) { + memcpy32_toio(sram + len, chip->oob_poi, mtd->oobsize); + len += mtd->oobsize; + nfc_writel(host->nfc->hsmc_regs, CFG, cfg | NFC_CFG_WSPARE); + } else { + nfc_writel(host->nfc->hsmc_regs, CFG, cfg & ~NFC_CFG_WSPARE); + } + if (chip->ecc.mode == NAND_ECC_HW && host->has_pmecc) /* * When use NFC sram, need set up PMECC before send @@ -2040,7 +2039,6 @@ static int atmel_nand_probe(struct platform_device *pdev) mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); host->io_base = devm_ioremap_resource(&pdev->dev, mem); if (IS_ERR(host->io_base)) { - dev_err(&pdev->dev, "atmel_nand: ioremap resource failed\n"); res = PTR_ERR(host->io_base); goto err_nand_ioremap; } @@ -2099,7 +2097,7 @@ static int atmel_nand_probe(struct platform_device *pdev) } nand_chip->ecc.mode = host->board.ecc_mode; - nand_chip->chip_delay = 20; /* 20us command delay time */ + nand_chip->chip_delay = 40; /* 40us command delay time */ if (host->board.bus_width_16) /* 16-bit bus width */ nand_chip->options |= NAND_BUSWIDTH_16; @@ -2248,6 +2246,7 @@ static int atmel_nand_nfc_probe(struct platform_device *pdev) { struct atmel_nfc *nfc = &nand_nfc; struct resource *nfc_cmd_regs, *nfc_hsmc_regs, *nfc_sram; + int ret; nfc_cmd_regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); nfc->base_cmd_regs = devm_ioremap_resource(&pdev->dev, nfc_cmd_regs); @@ -2279,8 +2278,28 @@ static int atmel_nand_nfc_probe(struct platform_device *pdev) nfc_writel(nfc->hsmc_regs, IDR, 0xffffffff); nfc_readl(nfc->hsmc_regs, SR); /* clear the NFC_SR */ + nfc->clk = devm_clk_get(&pdev->dev, NULL); + if (!IS_ERR(nfc->clk)) { + ret = clk_prepare_enable(nfc->clk); + if (ret) + return ret; + } else { + dev_warn(&pdev->dev, "NFC clock missing, update your Device Tree"); + } + nfc->is_initialized = true; dev_info(&pdev->dev, "NFC is probed.\n"); + + return 0; +} + +static int atmel_nand_nfc_remove(struct platform_device *pdev) +{ + struct atmel_nfc *nfc = &nand_nfc; + + if (!IS_ERR(nfc->clk)) + clk_disable_unprepare(nfc->clk); + return 0; } @@ -2297,6 +2316,7 @@ static struct platform_driver atmel_nand_nfc_driver = { .of_match_table = of_match_ptr(atmel_nand_nfc_match), }, .probe = atmel_nand_nfc_probe, + .remove = atmel_nand_nfc_remove, }; static struct platform_driver atmel_nand_driver = { diff --git a/drivers/mtd/nand/bcm47xxnflash/ops_bcm4706.c b/drivers/mtd/nand/bcm47xxnflash/ops_bcm4706.c index b2ab373c9eef..592befc7ffa1 100644 --- a/drivers/mtd/nand/bcm47xxnflash/ops_bcm4706.c +++ b/drivers/mtd/nand/bcm47xxnflash/ops_bcm4706.c @@ -14,6 +14,7 @@ #include <linux/module.h> #include <linux/kernel.h> #include <linux/slab.h> +#include <linux/delay.h> #include <linux/bcma/bcma.h> /* Broadcom uses 1'000'000 but it seems to be too many. Tests on WNDR4500 has @@ -23,6 +24,8 @@ #define NFLASH_SECTOR_SIZE 512 #define NCTL_CMD0 0x00010000 +#define NCTL_COL 0x00020000 /* Update column with value from BCMA_CC_NFLASH_COL_ADDR */ +#define NCTL_ROW 0x00040000 /* Update row (page) with value from BCMA_CC_NFLASH_ROW_ADDR */ #define NCTL_CMD1W 0x00080000 #define NCTL_READ 0x00100000 #define NCTL_WRITE 0x00200000 @@ -109,7 +112,7 @@ static void bcm47xxnflash_ops_bcm4706_read(struct mtd_info *mtd, uint8_t *buf, b47n->curr_page_addr); /* Prepare to read */ - ctlcode = NCTL_CSA | NCTL_CMD1W | 0x00040000 | 0x00020000 | + ctlcode = NCTL_CSA | NCTL_CMD1W | NCTL_ROW | NCTL_COL | NCTL_CMD0; ctlcode |= NAND_CMD_READSTART << 8; if (bcm47xxnflash_ops_bcm4706_ctl_cmd(b47n->cc, ctlcode)) @@ -167,6 +170,26 @@ static void bcm47xxnflash_ops_bcm4706_write(struct mtd_info *mtd, * NAND chip ops **************************************************/ +static void bcm47xxnflash_ops_bcm4706_cmd_ctrl(struct mtd_info *mtd, int cmd, + unsigned int ctrl) +{ + struct nand_chip *nand_chip = (struct nand_chip *)mtd->priv; + struct bcm47xxnflash *b47n = (struct bcm47xxnflash *)nand_chip->priv; + u32 code = 0; + + if (cmd == NAND_CMD_NONE) + return; + + if (cmd & NAND_CTRL_CLE) + code = cmd | NCTL_CMD0; + + /* nCS is not needed for reset command */ + if (cmd != NAND_CMD_RESET) + code |= NCTL_CSA; + + bcm47xxnflash_ops_bcm4706_ctl_cmd(b47n->cc, code); +} + /* Default nand_select_chip calls cmd_ctrl, which is not used in BCM4706 */ static void bcm47xxnflash_ops_bcm4706_select_chip(struct mtd_info *mtd, int chip) @@ -174,6 +197,14 @@ static void bcm47xxnflash_ops_bcm4706_select_chip(struct mtd_info *mtd, return; } +static int bcm47xxnflash_ops_bcm4706_dev_ready(struct mtd_info *mtd) +{ + struct nand_chip *nand_chip = (struct nand_chip *)mtd->priv; + struct bcm47xxnflash *b47n = (struct bcm47xxnflash *)nand_chip->priv; + + return !!(bcma_cc_read32(b47n->cc, BCMA_CC_NFLASH_CTL) & NCTL_READY); +} + /* * Default nand_command and nand_command_lp don't match BCM4706 hardware layout. * For example, reading chip id is performed in a non-standard way. @@ -198,7 +229,10 @@ static void bcm47xxnflash_ops_bcm4706_cmdfunc(struct mtd_info *mtd, switch (command) { case NAND_CMD_RESET: - pr_warn("Chip reset not implemented yet\n"); + nand_chip->cmd_ctrl(mtd, command, NAND_CTRL_CLE); + + ndelay(100); + nand_wait_ready(mtd); break; case NAND_CMD_READID: ctlcode = NCTL_CSA | 0x01000000 | NCTL_CMD1W | NCTL_CMD0; @@ -242,7 +276,7 @@ static void bcm47xxnflash_ops_bcm4706_cmdfunc(struct mtd_info *mtd, case NAND_CMD_ERASE1: bcma_cc_write32(cc, BCMA_CC_NFLASH_ROW_ADDR, b47n->curr_page_addr); - ctlcode = 0x00040000 | NCTL_CMD1W | NCTL_CMD0 | + ctlcode = NCTL_ROW | NCTL_CMD1W | NCTL_CMD0 | NAND_CMD_ERASE1 | (NAND_CMD_ERASE2 << 8); if (bcm47xxnflash_ops_bcm4706_ctl_cmd(cc, ctlcode)) pr_err("ERASE1 failed\n"); @@ -257,13 +291,13 @@ static void bcm47xxnflash_ops_bcm4706_cmdfunc(struct mtd_info *mtd, b47n->curr_page_addr); /* Prepare to write */ - ctlcode = 0x40000000 | 0x00040000 | 0x00020000 | 0x00010000; + ctlcode = 0x40000000 | NCTL_ROW | NCTL_COL | NCTL_CMD0; ctlcode |= NAND_CMD_SEQIN; if (bcm47xxnflash_ops_bcm4706_ctl_cmd(cc, ctlcode)) pr_err("SEQIN failed\n"); break; case NAND_CMD_PAGEPROG: - if (bcm47xxnflash_ops_bcm4706_ctl_cmd(cc, 0x00010000 | + if (bcm47xxnflash_ops_bcm4706_ctl_cmd(cc, NCTL_CMD0 | NAND_CMD_PAGEPROG)) pr_err("PAGEPROG failed\n"); if (bcm47xxnflash_ops_bcm4706_poll(cc)) @@ -341,6 +375,7 @@ static void bcm47xxnflash_ops_bcm4706_write_buf(struct mtd_info *mtd, int bcm47xxnflash_ops_bcm4706_init(struct bcm47xxnflash *b47n) { + struct nand_chip *nand_chip = (struct nand_chip *)&b47n->nand_chip; int err; u32 freq; u16 clock; @@ -351,10 +386,14 @@ int bcm47xxnflash_ops_bcm4706_init(struct bcm47xxnflash *b47n) u32 val; b47n->nand_chip.select_chip = bcm47xxnflash_ops_bcm4706_select_chip; + nand_chip->cmd_ctrl = bcm47xxnflash_ops_bcm4706_cmd_ctrl; + nand_chip->dev_ready = bcm47xxnflash_ops_bcm4706_dev_ready; b47n->nand_chip.cmdfunc = bcm47xxnflash_ops_bcm4706_cmdfunc; b47n->nand_chip.read_byte = bcm47xxnflash_ops_bcm4706_read_byte; b47n->nand_chip.read_buf = bcm47xxnflash_ops_bcm4706_read_buf; b47n->nand_chip.write_buf = bcm47xxnflash_ops_bcm4706_write_buf; + + nand_chip->chip_delay = 50; b47n->nand_chip.bbt_options = NAND_BBT_USE_FLASH; b47n->nand_chip.ecc.mode = NAND_ECC_NONE; /* TODO: implement ECC */ @@ -364,11 +403,13 @@ int bcm47xxnflash_ops_bcm4706_init(struct bcm47xxnflash *b47n) /* Configure wait counters */ if (b47n->cc->status & BCMA_CC_CHIPST_4706_PKG_OPTION) { - freq = 100000000; + /* 400 MHz */ + freq = 400000000 / 4; } else { freq = bcma_chipco_pll_read(b47n->cc, 4); - freq = (freq * 0xFFF) >> 3; - freq = (freq * 25000000) >> 3; + freq = (freq & 0xFFF) >> 3; + /* Fixed reference clock 25 MHz and m = 2 */ + freq = (freq * 25000000 / 2) / 4; } clock = freq / 1000000; w0 = bcm47xxnflash_ops_bcm4706_ns_to_cycle(15, clock); diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c index 0b071a3136a2..b3b7ca1bafb8 100644 --- a/drivers/mtd/nand/denali.c +++ b/drivers/mtd/nand/denali.c @@ -29,20 +29,23 @@ MODULE_LICENSE("GPL"); -/* We define a module parameter that allows the user to override +/* + * We define a module parameter that allows the user to override * the hardware and decide what timing mode should be used. */ #define NAND_DEFAULT_TIMINGS -1 static int onfi_timing_mode = NAND_DEFAULT_TIMINGS; module_param(onfi_timing_mode, int, S_IRUGO); -MODULE_PARM_DESC(onfi_timing_mode, "Overrides default ONFI setting." - " -1 indicates use default timings"); +MODULE_PARM_DESC(onfi_timing_mode, + "Overrides default ONFI setting. -1 indicates use default timings"); #define DENALI_NAND_NAME "denali-nand" -/* We define a macro here that combines all interrupts this driver uses into - * a single constant value, for convenience. */ +/* + * We define a macro here that combines all interrupts this driver uses into + * a single constant value, for convenience. + */ #define DENALI_IRQ_ALL (INTR_STATUS__DMA_CMD_COMP | \ INTR_STATUS__ECC_TRANSACTION_DONE | \ INTR_STATUS__ECC_ERR | \ @@ -54,26 +57,34 @@ MODULE_PARM_DESC(onfi_timing_mode, "Overrides default ONFI setting." INTR_STATUS__RST_COMP | \ INTR_STATUS__ERASE_COMP) -/* indicates whether or not the internal value for the flash bank is - * valid or not */ +/* + * indicates whether or not the internal value for the flash bank is + * valid or not + */ #define CHIP_SELECT_INVALID -1 #define SUPPORT_8BITECC 1 -/* This macro divides two integers and rounds fractional values up - * to the nearest integer value. */ +/* + * This macro divides two integers and rounds fractional values up + * to the nearest integer value. + */ #define CEIL_DIV(X, Y) (((X)%(Y)) ? ((X)/(Y)+1) : ((X)/(Y))) -/* this macro allows us to convert from an MTD structure to our own +/* + * this macro allows us to convert from an MTD structure to our own * device context (denali) structure. */ #define mtd_to_denali(m) container_of(m, struct denali_nand_info, mtd) -/* These constants are defined by the driver to enable common driver - * configuration options. */ +/* + * These constants are defined by the driver to enable common driver + * configuration options. + */ #define SPARE_ACCESS 0x41 #define MAIN_ACCESS 0x42 #define MAIN_SPARE_ACCESS 0x43 +#define PIPELINE_ACCESS 0x2000 #define DENALI_READ 0 #define DENALI_WRITE 0x100 @@ -83,8 +94,10 @@ MODULE_PARM_DESC(onfi_timing_mode, "Overrides default ONFI setting." #define ADDR_CYCLE 1 #define STATUS_CYCLE 2 -/* this is a helper macro that allows us to - * format the bank into the proper bits for the controller */ +/* + * this is a helper macro that allows us to + * format the bank into the proper bits for the controller + */ #define BANK(x) ((x) << 24) /* forward declarations */ @@ -95,12 +108,12 @@ static void denali_irq_enable(struct denali_nand_info *denali, uint32_t int_mask); static uint32_t read_interrupt_status(struct denali_nand_info *denali); -/* Certain operations for the denali NAND controller use - * an indexed mode to read/write data. The operation is - * performed by writing the address value of the command - * to the device memory followed by the data. This function +/* + * Certain operations for the denali NAND controller use an indexed mode to + * read/write data. The operation is performed by writing the address value + * of the command to the device memory followed by the data. This function * abstracts this common operation. -*/ + */ static void index_addr(struct denali_nand_info *denali, uint32_t address, uint32_t data) { @@ -116,8 +129,10 @@ static void index_addr_read_data(struct denali_nand_info *denali, *pdata = ioread32(denali->flash_mem + 0x10); } -/* We need to buffer some data for some of the NAND core routines. - * The operations manage buffering that data. */ +/* + * We need to buffer some data for some of the NAND core routines. + * The operations manage buffering that data. + */ static void reset_buf(struct denali_nand_info *denali) { denali->buf.head = denali->buf.tail = 0; @@ -131,7 +146,7 @@ static void write_byte_to_buf(struct denali_nand_info *denali, uint8_t byte) /* reads the status of the device */ static void read_status(struct denali_nand_info *denali) { - uint32_t cmd = 0x0; + uint32_t cmd; /* initialize the data buffer to store status */ reset_buf(denali); @@ -146,9 +161,8 @@ static void read_status(struct denali_nand_info *denali) /* resets a specific device connected to the core */ static void reset_bank(struct denali_nand_info *denali) { - uint32_t irq_status = 0; - uint32_t irq_mask = INTR_STATUS__RST_COMP | - INTR_STATUS__TIME_OUT; + uint32_t irq_status; + uint32_t irq_mask = INTR_STATUS__RST_COMP | INTR_STATUS__TIME_OUT; clear_interrupts(denali); @@ -163,19 +177,18 @@ static void reset_bank(struct denali_nand_info *denali) /* Reset the flash controller */ static uint16_t denali_nand_reset(struct denali_nand_info *denali) { - uint32_t i; + int i; dev_dbg(denali->dev, "%s, Line %d, Function: %s\n", - __FILE__, __LINE__, __func__); + __FILE__, __LINE__, __func__); - for (i = 0 ; i < denali->max_banks; i++) + for (i = 0; i < denali->max_banks; i++) iowrite32(INTR_STATUS__RST_COMP | INTR_STATUS__TIME_OUT, denali->flash_reg + INTR_STATUS(i)); - for (i = 0 ; i < denali->max_banks; i++) { + for (i = 0; i < denali->max_banks; i++) { iowrite32(1 << i, denali->flash_reg + DEVICE_RESET); - while (!(ioread32(denali->flash_reg + - INTR_STATUS(i)) & + while (!(ioread32(denali->flash_reg + INTR_STATUS(i)) & (INTR_STATUS__RST_COMP | INTR_STATUS__TIME_OUT))) cpu_relax(); if (ioread32(denali->flash_reg + INTR_STATUS(i)) & @@ -186,12 +199,13 @@ static uint16_t denali_nand_reset(struct denali_nand_info *denali) for (i = 0; i < denali->max_banks; i++) iowrite32(INTR_STATUS__RST_COMP | INTR_STATUS__TIME_OUT, - denali->flash_reg + INTR_STATUS(i)); + denali->flash_reg + INTR_STATUS(i)); return PASS; } -/* this routine calculates the ONFI timing values for a given mode and +/* + * this routine calculates the ONFI timing values for a given mode and * programs the clocking register accordingly. The mode is determined by * the get_onfi_nand_para routine. */ @@ -219,7 +233,7 @@ static void nand_onfi_timing_set(struct denali_nand_info *denali, uint16_t addr_2_data, re_2_we, re_2_re, we_2_re, cs_cnt; dev_dbg(denali->dev, "%s, Line %d, Function: %s\n", - __FILE__, __LINE__, __func__); + __FILE__, __LINE__, __func__); en_lo = CEIL_DIV(Trp[mode], CLK_X); en_hi = CEIL_DIV(Treh[mode], CLK_X); @@ -239,9 +253,8 @@ static void nand_onfi_timing_set(struct denali_nand_info *denali, data_invalid_rloh = (en_lo + en_hi) * CLK_X + Trloh[mode]; - data_invalid = - data_invalid_rhoh < - data_invalid_rloh ? data_invalid_rhoh : data_invalid_rloh; + data_invalid = data_invalid_rhoh < data_invalid_rloh ? + data_invalid_rhoh : data_invalid_rloh; dv_window = data_invalid - Trea[mode]; @@ -251,12 +264,12 @@ static void nand_onfi_timing_set(struct denali_nand_info *denali, acc_clks = CEIL_DIV(Trea[mode], CLK_X); - while (((acc_clks * CLK_X) - Trea[mode]) < 3) + while (acc_clks * CLK_X - Trea[mode] < 3) acc_clks++; - if ((data_invalid - acc_clks * CLK_X) < 2) + if (data_invalid - acc_clks * CLK_X < 2) dev_warn(denali->dev, "%s, Line %d: Warning!\n", - __FILE__, __LINE__); + __FILE__, __LINE__); addr_2_data = CEIL_DIV(Tadl[mode], CLK_X); re_2_we = CEIL_DIV(Trhw[mode], CLK_X); @@ -269,7 +282,7 @@ static void nand_onfi_timing_set(struct denali_nand_info *denali, cs_cnt = 1; if (Tcea[mode]) { - while (((cs_cnt * CLK_X) + Trea[mode]) < Tcea[mode]) + while (cs_cnt * CLK_X + Trea[mode] < Tcea[mode]) cs_cnt++; } @@ -279,8 +292,8 @@ static void nand_onfi_timing_set(struct denali_nand_info *denali, #endif /* Sighting 3462430: Temporary hack for MT29F128G08CJABAWP:B */ - if ((ioread32(denali->flash_reg + MANUFACTURER_ID) == 0) && - (ioread32(denali->flash_reg + DEVICE_ID) == 0x88)) + if (ioread32(denali->flash_reg + MANUFACTURER_ID) == 0 && + ioread32(denali->flash_reg + DEVICE_ID) == 0x88) acc_clks = 6; iowrite32(acc_clks, denali->flash_reg + ACC_CLKS); @@ -297,9 +310,11 @@ static void nand_onfi_timing_set(struct denali_nand_info *denali, static uint16_t get_onfi_nand_para(struct denali_nand_info *denali) { int i; - /* we needn't to do a reset here because driver has already + + /* + * we needn't to do a reset here because driver has already * reset all the banks before - * */ + */ if (!(ioread32(denali->flash_reg + ONFI_TIMING_MODE) & ONFI_TIMING_MODE__VALUE)) return FAIL; @@ -312,8 +327,10 @@ static uint16_t get_onfi_nand_para(struct denali_nand_info *denali) nand_onfi_timing_set(denali, i); - /* By now, all the ONFI devices we know support the page cache */ - /* rw feature. So here we enable the pipeline_rw_ahead feature */ + /* + * By now, all the ONFI devices we know support the page cache + * rw feature. So here we enable the pipeline_rw_ahead feature + */ /* iowrite32(1, denali->flash_reg + CACHE_WRITE_ENABLE); */ /* iowrite32(1, denali->flash_reg + CACHE_READ_ENABLE); */ @@ -339,8 +356,10 @@ static void get_toshiba_nand_para(struct denali_nand_info *denali) { uint32_t tmp; - /* Workaround to fix a controller bug which reports a wrong */ - /* spare area size for some kind of Toshiba NAND device */ + /* + * Workaround to fix a controller bug which reports a wrong + * spare area size for some kind of Toshiba NAND device + */ if ((ioread32(denali->flash_reg + DEVICE_MAIN_AREA_SIZE) == 4096) && (ioread32(denali->flash_reg + DEVICE_SPARE_AREA_SIZE) == 64)) { iowrite32(216, denali->flash_reg + DEVICE_SPARE_AREA_SIZE); @@ -384,13 +403,14 @@ static void get_hynix_nand_para(struct denali_nand_info *denali, break; default: dev_warn(denali->dev, - "Spectra: Unknown Hynix NAND (Device ID: 0x%x)." - "Will use default parameter values instead.\n", - device_id); + "Spectra: Unknown Hynix NAND (Device ID: 0x%x).\n" + "Will use default parameter values instead.\n", + device_id); } } -/* determines how many NAND chips are connected to the controller. Note for +/* + * determines how many NAND chips are connected to the controller. Note for * Intel CE4100 devices we don't support more than one device. */ static void find_valid_banks(struct denali_nand_info *denali) @@ -400,10 +420,9 @@ static void find_valid_banks(struct denali_nand_info *denali) denali->total_used_banks = 1; for (i = 0; i < denali->max_banks; i++) { - index_addr(denali, (uint32_t)(MODE_11 | (i << 24) | 0), 0x90); - index_addr(denali, (uint32_t)(MODE_11 | (i << 24) | 1), 0); - index_addr_read_data(denali, - (uint32_t)(MODE_11 | (i << 24) | 2), &id[i]); + index_addr(denali, MODE_11 | (i << 24) | 0, 0x90); + index_addr(denali, MODE_11 | (i << 24) | 1, 0); + index_addr_read_data(denali, MODE_11 | (i << 24) | 2, &id[i]); dev_dbg(denali->dev, "Return 1st ID for bank[%d]: %x\n", i, id[i]); @@ -420,14 +439,14 @@ static void find_valid_banks(struct denali_nand_info *denali) } if (denali->platform == INTEL_CE4100) { - /* Platform limitations of the CE4100 device limit + /* + * Platform limitations of the CE4100 device limit * users to a single chip solution for NAND. * Multichip support is not enabled. */ if (denali->total_used_banks != 1) { dev_err(denali->dev, - "Sorry, Intel CE4100 only supports " - "a single NAND device.\n"); + "Sorry, Intel CE4100 only supports a single NAND device.\n"); BUG(); } } @@ -448,12 +467,13 @@ static void detect_max_banks(struct denali_nand_info *denali) static void detect_partition_feature(struct denali_nand_info *denali) { - /* For MRST platform, denali->fwblks represent the + /* + * For MRST platform, denali->fwblks represent the * number of blocks firmware is taken, * FW is in protect partition and MTD driver has no * permission to access it. So let driver know how many * blocks it can't touch. - * */ + */ if (ioread32(denali->flash_reg + FEATURES) & FEATURES__PARTITION) { if ((ioread32(denali->flash_reg + PERM_SRC_ID(1)) & PERM_SRC_ID__SRCID) == SPECTRA_PARTITION_ID) { @@ -464,30 +484,32 @@ static void detect_partition_feature(struct denali_nand_info *denali) + (ioread32(denali->flash_reg + MIN_BLK_ADDR(1)) & MIN_BLK_ADDR__VALUE); - } else + } else { denali->fwblks = SPECTRA_START_BLOCK; - } else + } + } else { denali->fwblks = SPECTRA_START_BLOCK; + } } static uint16_t denali_nand_timing_set(struct denali_nand_info *denali) { uint16_t status = PASS; uint32_t id_bytes[8], addr; - uint8_t i, maf_id, device_id; + uint8_t maf_id, device_id; + int i; - dev_dbg(denali->dev, - "%s, Line %d, Function: %s\n", + dev_dbg(denali->dev, "%s, Line %d, Function: %s\n", __FILE__, __LINE__, __func__); - /* Use read id method to get device ID and other - * params. For some NAND chips, controller can't - * report the correct device ID by reading from - * DEVICE_ID register - * */ - addr = (uint32_t)MODE_11 | BANK(denali->flash_bank); - index_addr(denali, (uint32_t)addr | 0, 0x90); - index_addr(denali, (uint32_t)addr | 1, 0); + /* + * Use read id method to get device ID and other params. + * For some NAND chips, controller can't report the correct + * device ID by reading from DEVICE_ID register + */ + addr = MODE_11 | BANK(denali->flash_bank); + index_addr(denali, addr | 0, 0x90); + index_addr(denali, addr | 1, 0); for (i = 0; i < 8; i++) index_addr_read_data(denali, addr | 2, &id_bytes[i]); maf_id = id_bytes[0]; @@ -506,7 +528,7 @@ static uint16_t denali_nand_timing_set(struct denali_nand_info *denali) } dev_info(denali->dev, - "Dump timing register values:" + "Dump timing register values:\n" "acc_clks: %d, re_2_we: %d, re_2_re: %d\n" "we_2_re: %d, addr_2_data: %d, rdwr_en_lo_cnt: %d\n" "rdwr_en_hi_cnt: %d, cs_setup_cnt: %d\n", @@ -523,7 +545,8 @@ static uint16_t denali_nand_timing_set(struct denali_nand_info *denali) detect_partition_feature(denali); - /* If the user specified to override the default timings + /* + * If the user specified to override the default timings * with a specific ONFI mode, we apply those changes here. */ if (onfi_timing_mode != NAND_DEFAULT_TIMINGS) @@ -536,7 +559,7 @@ static void denali_set_intr_modes(struct denali_nand_info *denali, uint16_t INT_ENABLE) { dev_dbg(denali->dev, "%s, Line %d, Function: %s\n", - __FILE__, __LINE__, __func__); + __FILE__, __LINE__, __func__); if (INT_ENABLE) iowrite32(1, denali->flash_reg + GLOBAL_INT_ENABLE); @@ -544,17 +567,18 @@ static void denali_set_intr_modes(struct denali_nand_info *denali, iowrite32(0, denali->flash_reg + GLOBAL_INT_ENABLE); } -/* validation function to verify that the controlling software is making +/* + * validation function to verify that the controlling software is making * a valid request */ static inline bool is_flash_bank_valid(int flash_bank) { - return (flash_bank >= 0 && flash_bank < 4); + return flash_bank >= 0 && flash_bank < 4; } static void denali_irq_init(struct denali_nand_info *denali) { - uint32_t int_mask = 0; + uint32_t int_mask; int i; /* Disable global interrupts */ @@ -584,7 +608,8 @@ static void denali_irq_enable(struct denali_nand_info *denali, iowrite32(int_mask, denali->flash_reg + INTR_EN(i)); } -/* This function only returns when an interrupt that this driver cares about +/* + * This function only returns when an interrupt that this driver cares about * occurs. This is to reduce the overhead of servicing interrupts */ static inline uint32_t denali_irq_detected(struct denali_nand_info *denali) @@ -596,7 +621,7 @@ static inline uint32_t denali_irq_detected(struct denali_nand_info *denali) static inline void clear_interrupt(struct denali_nand_info *denali, uint32_t irq_mask) { - uint32_t intr_status_reg = 0; + uint32_t intr_status_reg; intr_status_reg = INTR_STATUS(denali->flash_bank); @@ -605,7 +630,8 @@ static inline void clear_interrupt(struct denali_nand_info *denali, static void clear_interrupts(struct denali_nand_info *denali) { - uint32_t status = 0x0; + uint32_t status; + spin_lock_irq(&denali->irq_lock); status = read_interrupt_status(denali); @@ -617,38 +643,40 @@ static void clear_interrupts(struct denali_nand_info *denali) static uint32_t read_interrupt_status(struct denali_nand_info *denali) { - uint32_t intr_status_reg = 0; + uint32_t intr_status_reg; intr_status_reg = INTR_STATUS(denali->flash_bank); return ioread32(denali->flash_reg + intr_status_reg); } -/* This is the interrupt service routine. It handles all interrupts - * sent to this device. Note that on CE4100, this is a shared - * interrupt. +/* + * This is the interrupt service routine. It handles all interrupts + * sent to this device. Note that on CE4100, this is a shared interrupt. */ static irqreturn_t denali_isr(int irq, void *dev_id) { struct denali_nand_info *denali = dev_id; - uint32_t irq_status = 0x0; + uint32_t irq_status; irqreturn_t result = IRQ_NONE; spin_lock(&denali->irq_lock); - /* check to see if a valid NAND chip has - * been selected. - */ + /* check to see if a valid NAND chip has been selected. */ if (is_flash_bank_valid(denali->flash_bank)) { - /* check to see if controller generated - * the interrupt, since this is a shared interrupt */ + /* + * check to see if controller generated the interrupt, + * since this is a shared interrupt + */ irq_status = denali_irq_detected(denali); if (irq_status != 0) { /* handle interrupt */ /* first acknowledge it */ clear_interrupt(denali, irq_status); - /* store the status in the device context for someone - to read */ + /* + * store the status in the device context for someone + * to read + */ denali->irq_status |= irq_status; /* notify anyone who cares that it happened */ complete(&denali->complete); @@ -663,9 +691,8 @@ static irqreturn_t denali_isr(int irq, void *dev_id) static uint32_t wait_for_irq(struct denali_nand_info *denali, uint32_t irq_mask) { - unsigned long comp_res = 0; - uint32_t intr_status = 0; - bool retry = false; + unsigned long comp_res; + uint32_t intr_status; unsigned long timeout = msecs_to_jiffies(1000); do { @@ -679,12 +706,13 @@ static uint32_t wait_for_irq(struct denali_nand_info *denali, uint32_t irq_mask) spin_unlock_irq(&denali->irq_lock); /* our interrupt was detected */ break; - } else { - /* these are not the interrupts you are looking for - - * need to wait again */ - spin_unlock_irq(&denali->irq_lock); - retry = true; } + + /* + * these are not the interrupts you are looking for - + * need to wait again + */ + spin_unlock_irq(&denali->irq_lock); } while (comp_res != 0); if (comp_res == 0) { @@ -697,12 +725,14 @@ static uint32_t wait_for_irq(struct denali_nand_info *denali, uint32_t irq_mask) return intr_status; } -/* This helper function setups the registers for ECC and whether or not - * the spare area will be transferred. */ +/* + * This helper function setups the registers for ECC and whether or not + * the spare area will be transferred. + */ static void setup_ecc_for_xfer(struct denali_nand_info *denali, bool ecc_en, bool transfer_spare) { - int ecc_en_flag = 0, transfer_spare_flag = 0; + int ecc_en_flag, transfer_spare_flag; /* set ECC, transfer spare bits if needed */ ecc_en_flag = ecc_en ? ECC_ENABLE__FLAG : 0; @@ -710,22 +740,20 @@ static void setup_ecc_for_xfer(struct denali_nand_info *denali, bool ecc_en, /* Enable spare area/ECC per user's request. */ iowrite32(ecc_en_flag, denali->flash_reg + ECC_ENABLE); - iowrite32(transfer_spare_flag, - denali->flash_reg + TRANSFER_SPARE_REG); + iowrite32(transfer_spare_flag, denali->flash_reg + TRANSFER_SPARE_REG); } -/* sends a pipeline command operation to the controller. See the Denali NAND +/* + * sends a pipeline command operation to the controller. See the Denali NAND * controller's user guide for more information (section 4.2.3.6). */ static int denali_send_pipeline_cmd(struct denali_nand_info *denali, - bool ecc_en, - bool transfer_spare, - int access_type, - int op) + bool ecc_en, bool transfer_spare, + int access_type, int op) { int status = PASS; - uint32_t addr = 0x0, cmd = 0x0, page_count = 1, irq_status = 0, - irq_mask = 0; + uint32_t page_count = 1; + uint32_t addr, cmd, irq_status, irq_mask; if (op == DENALI_READ) irq_mask = INTR_STATUS__LOAD_COMP; @@ -736,7 +764,6 @@ static int denali_send_pipeline_cmd(struct denali_nand_info *denali, setup_ecc_for_xfer(denali, ecc_en, transfer_spare); - /* clear interrupts */ clear_interrupts(denali); addr = BANK(denali->flash_bank) | denali->page; @@ -747,37 +774,38 @@ static int denali_send_pipeline_cmd(struct denali_nand_info *denali, } else if (op == DENALI_WRITE && access_type == SPARE_ACCESS) { /* read spare area */ cmd = MODE_10 | addr; - index_addr(denali, (uint32_t)cmd, access_type); + index_addr(denali, cmd, access_type); cmd = MODE_01 | addr; iowrite32(cmd, denali->flash_mem); } else if (op == DENALI_READ) { /* setup page read request for access type */ cmd = MODE_10 | addr; - index_addr(denali, (uint32_t)cmd, access_type); + index_addr(denali, cmd, access_type); - /* page 33 of the NAND controller spec indicates we should not - use the pipeline commands in Spare area only mode. So we - don't. + /* + * page 33 of the NAND controller spec indicates we should not + * use the pipeline commands in Spare area only mode. + * So we don't. */ if (access_type == SPARE_ACCESS) { cmd = MODE_01 | addr; iowrite32(cmd, denali->flash_mem); } else { - index_addr(denali, (uint32_t)cmd, - 0x2000 | op | page_count); + index_addr(denali, cmd, + PIPELINE_ACCESS | op | page_count); - /* wait for command to be accepted + /* + * wait for command to be accepted * can always use status0 bit as the - * mask is identical for each - * bank. */ + * mask is identical for each bank. + */ irq_status = wait_for_irq(denali, irq_mask); if (irq_status == 0) { dev_err(denali->dev, - "cmd, page, addr on timeout " - "(0x%x, 0x%x, 0x%x)\n", - cmd, denali->page, addr); + "cmd, page, addr on timeout (0x%x, 0x%x, 0x%x)\n", + cmd, denali->page, addr); status = FAIL; } else { cmd = MODE_01 | addr; @@ -790,51 +818,51 @@ static int denali_send_pipeline_cmd(struct denali_nand_info *denali, /* helper function that simply writes a buffer to the flash */ static int write_data_to_flash_mem(struct denali_nand_info *denali, - const uint8_t *buf, - int len) + const uint8_t *buf, int len) { - uint32_t i = 0, *buf32; + uint32_t *buf32; + int i; - /* verify that the len is a multiple of 4. see comment in - * read_data_from_flash_mem() */ + /* + * verify that the len is a multiple of 4. + * see comment in read_data_from_flash_mem() + */ BUG_ON((len % 4) != 0); /* write the data to the flash memory */ buf32 = (uint32_t *)buf; for (i = 0; i < len / 4; i++) iowrite32(*buf32++, denali->flash_mem + 0x10); - return i*4; /* intent is to return the number of bytes read */ + return i * 4; /* intent is to return the number of bytes read */ } /* helper function that simply reads a buffer from the flash */ static int read_data_from_flash_mem(struct denali_nand_info *denali, - uint8_t *buf, - int len) + uint8_t *buf, int len) { - uint32_t i = 0, *buf32; - - /* we assume that len will be a multiple of 4, if not - * it would be nice to know about it ASAP rather than - * have random failures... - * This assumption is based on the fact that this - * function is designed to be used to read flash pages, - * which are typically multiples of 4... - */ + uint32_t *buf32; + int i; + /* + * we assume that len will be a multiple of 4, if not it would be nice + * to know about it ASAP rather than have random failures... + * This assumption is based on the fact that this function is designed + * to be used to read flash pages, which are typically multiples of 4. + */ BUG_ON((len % 4) != 0); /* transfer the data from the flash */ buf32 = (uint32_t *)buf; for (i = 0; i < len / 4; i++) *buf32++ = ioread32(denali->flash_mem + 0x10); - return i*4; /* intent is to return the number of bytes read */ + return i * 4; /* intent is to return the number of bytes read */ } /* writes OOB data to the device */ static int write_oob_data(struct mtd_info *mtd, uint8_t *buf, int page) { struct denali_nand_info *denali = mtd_to_denali(mtd); - uint32_t irq_status = 0; + uint32_t irq_status; uint32_t irq_mask = INTR_STATUS__PROGRAM_COMP | INTR_STATUS__PROGRAM_FAIL; int status = 0; @@ -863,8 +891,8 @@ static int write_oob_data(struct mtd_info *mtd, uint8_t *buf, int page) static void read_oob_data(struct mtd_info *mtd, uint8_t *buf, int page) { struct denali_nand_info *denali = mtd_to_denali(mtd); - uint32_t irq_mask = INTR_STATUS__LOAD_COMP, - irq_status = 0, addr = 0x0, cmd = 0x0; + uint32_t irq_mask = INTR_STATUS__LOAD_COMP; + uint32_t irq_status, addr, cmd; denali->page = page; @@ -872,16 +900,19 @@ static void read_oob_data(struct mtd_info *mtd, uint8_t *buf, int page) DENALI_READ) == PASS) { read_data_from_flash_mem(denali, buf, mtd->oobsize); - /* wait for command to be accepted - * can always use status0 bit as the mask is identical for each - * bank. */ + /* + * wait for command to be accepted + * can always use status0 bit as the + * mask is identical for each bank. + */ irq_status = wait_for_irq(denali, irq_mask); if (irq_status == 0) dev_err(denali->dev, "page on OOB timeout %d\n", denali->page); - /* We set the device back to MAIN_ACCESS here as I observed + /* + * We set the device back to MAIN_ACCESS here as I observed * instability with the controller if you do a block erase * and the last transaction was a SPARE_ACCESS. Block erase * is reliable (according to the MTD test infrastructure) @@ -889,16 +920,18 @@ static void read_oob_data(struct mtd_info *mtd, uint8_t *buf, int page) */ addr = BANK(denali->flash_bank) | denali->page; cmd = MODE_10 | addr; - index_addr(denali, (uint32_t)cmd, MAIN_ACCESS); + index_addr(denali, cmd, MAIN_ACCESS); } } -/* this function examines buffers to see if they contain data that +/* + * this function examines buffers to see if they contain data that * indicate that the buffer is part of an erased region of flash. */ static bool is_erased(uint8_t *buf, int len) { - int i = 0; + int i; + for (i = 0; i < len; i++) if (buf[i] != 0xFF) return false; @@ -921,9 +954,8 @@ static bool handle_ecc(struct denali_nand_info *denali, uint8_t *buf, if (irq_status & INTR_STATUS__ECC_ERR) { /* read the ECC errors. we'll ignore them for now */ - uint32_t err_address = 0, err_correction_info = 0; - uint32_t err_byte = 0, err_sector = 0, err_device = 0; - uint32_t err_correction_value = 0; + uint32_t err_address, err_correction_info, err_byte, + err_sector, err_device, err_correction_value; denali_set_intr_modes(denali, false); do { @@ -939,15 +971,17 @@ static bool handle_ecc(struct denali_nand_info *denali, uint8_t *buf, err_device = ECC_ERR_DEVICE(err_correction_info); if (ECC_ERROR_CORRECTABLE(err_correction_info)) { - /* If err_byte is larger than ECC_SECTOR_SIZE, + /* + * If err_byte is larger than ECC_SECTOR_SIZE, * means error happened in OOB, so we ignore * it. It's no need for us to correct it * err_device is represented the NAND error * bits are happened in if there are more * than one NAND connected. - * */ + */ if (err_byte < ECC_SECTOR_SIZE) { int offset; + offset = (err_sector * ECC_SECTOR_SIZE + err_byte) * @@ -959,17 +993,19 @@ static bool handle_ecc(struct denali_nand_info *denali, uint8_t *buf, bitflips++; } } else { - /* if the error is not correctable, need to + /* + * if the error is not correctable, need to * look at the page to see if it is an erased * page. if so, then it's not a real ECC error - * */ + */ check_erased_page = true; } } while (!ECC_LAST_ERR(err_correction_info)); - /* Once handle all ecc errors, controller will triger + /* + * Once handle all ecc errors, controller will triger * a ECC_TRANSACTION_DONE interrupt, so here just wait * for a while for this interrupt - * */ + */ while (!(read_interrupt_status(denali) & INTR_STATUS__ECC_TRANSACTION_DONE)) cpu_relax(); @@ -983,21 +1019,16 @@ static bool handle_ecc(struct denali_nand_info *denali, uint8_t *buf, /* programs the controller to either enable/disable DMA transfers */ static void denali_enable_dma(struct denali_nand_info *denali, bool en) { - uint32_t reg_val = 0x0; - - if (en) - reg_val = DMA_ENABLE__FLAG; - - iowrite32(reg_val, denali->flash_reg + DMA_ENABLE); + iowrite32(en ? DMA_ENABLE__FLAG : 0, denali->flash_reg + DMA_ENABLE); ioread32(denali->flash_reg + DMA_ENABLE); } /* setups the HW to perform the data DMA */ static void denali_setup_dma(struct denali_nand_info *denali, int op) { - uint32_t mode = 0x0; + uint32_t mode; const int page_count = 1; - dma_addr_t addr = denali->buf.dma_buf; + uint32_t addr = denali->buf.dma_buf; mode = MODE_10 | BANK(denali->flash_bank); @@ -1007,31 +1038,31 @@ static void denali_setup_dma(struct denali_nand_info *denali, int op) index_addr(denali, mode | denali->page, 0x2000 | op | page_count); /* 2. set memory high address bits 23:8 */ - index_addr(denali, mode | ((uint16_t)(addr >> 16) << 8), 0x2200); + index_addr(denali, mode | ((addr >> 16) << 8), 0x2200); /* 3. set memory low address bits 23:8 */ - index_addr(denali, mode | ((uint16_t)addr << 8), 0x2300); + index_addr(denali, mode | ((addr & 0xff) << 8), 0x2300); - /* 4. interrupt when complete, burst len = 64 bytes*/ + /* 4. interrupt when complete, burst len = 64 bytes */ index_addr(denali, mode | 0x14000, 0x2400); } -/* writes a page. user specifies type, and this function handles the - * configuration details. */ +/* + * writes a page. user specifies type, and this function handles the + * configuration details. + */ static int write_page(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf, bool raw_xfer) { struct denali_nand_info *denali = mtd_to_denali(mtd); - dma_addr_t addr = denali->buf.dma_buf; size_t size = denali->mtd.writesize + denali->mtd.oobsize; - - uint32_t irq_status = 0; + uint32_t irq_status; uint32_t irq_mask = INTR_STATUS__DMA_CMD_COMP | INTR_STATUS__PROGRAM_FAIL; - /* if it is a raw xfer, we want to disable ecc, and send - * the spare area. + /* + * if it is a raw xfer, we want to disable ecc and send the spare area. * !raw_xfer - enable ecc * raw_xfer - transfer spare */ @@ -1058,12 +1089,9 @@ static int write_page(struct mtd_info *mtd, struct nand_chip *chip, irq_status = wait_for_irq(denali, irq_mask); if (irq_status == 0) { - dev_err(denali->dev, - "timeout on write_page (type = %d)\n", - raw_xfer); - denali->status = - (irq_status & INTR_STATUS__PROGRAM_FAIL) ? - NAND_STATUS_FAIL : PASS; + dev_err(denali->dev, "timeout on write_page (type = %d)\n", + raw_xfer); + denali->status = NAND_STATUS_FAIL; } denali_enable_dma(denali, false); @@ -1074,27 +1102,33 @@ static int write_page(struct mtd_info *mtd, struct nand_chip *chip, /* NAND core entry points */ -/* this is the callback that the NAND core calls to write a page. Since +/* + * this is the callback that the NAND core calls to write a page. Since * writing a page with ECC or without is similar, all the work is done * by write_page above. - * */ + */ static int denali_write_page(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf, int oob_required) { - /* for regular page writes, we let HW handle all the ECC - * data written to the device. */ + /* + * for regular page writes, we let HW handle all the ECC + * data written to the device. + */ return write_page(mtd, chip, buf, false); } -/* This is the callback that the NAND core calls to write a page without ECC. +/* + * This is the callback that the NAND core calls to write a page without ECC. * raw access is similar to ECC page writes, so all the work is done in the * write_page() function above. */ static int denali_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf, int oob_required) { - /* for raw page writes, we want to disable ECC and simply write - whatever data is in the buffer. */ + /* + * for raw page writes, we want to disable ECC and simply write + * whatever data is in the buffer. + */ return write_page(mtd, chip, buf, true); } @@ -1121,15 +1155,15 @@ static int denali_read_page(struct mtd_info *mtd, struct nand_chip *chip, dma_addr_t addr = denali->buf.dma_buf; size_t size = denali->mtd.writesize + denali->mtd.oobsize; - uint32_t irq_status = 0; + uint32_t irq_status; uint32_t irq_mask = INTR_STATUS__ECC_TRANSACTION_DONE | INTR_STATUS__ECC_ERR; bool check_erased_page = false; if (page != denali->page) { - dev_err(denali->dev, "IN %s: page %d is not" - " equal to denali->page %d, investigate!!", - __func__, page, denali->page); + dev_err(denali->dev, + "IN %s: page %d is not equal to denali->page %d", + __func__, page, denali->page); BUG(); } @@ -1169,17 +1203,14 @@ static int denali_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, int oob_required, int page) { struct denali_nand_info *denali = mtd_to_denali(mtd); - dma_addr_t addr = denali->buf.dma_buf; size_t size = denali->mtd.writesize + denali->mtd.oobsize; - - uint32_t irq_status = 0; uint32_t irq_mask = INTR_STATUS__DMA_CMD_COMP; if (page != denali->page) { - dev_err(denali->dev, "IN %s: page %d is not" - " equal to denali->page %d, investigate!!", - __func__, page, denali->page); + dev_err(denali->dev, + "IN %s: page %d is not equal to denali->page %d", + __func__, page, denali->page); BUG(); } @@ -1192,7 +1223,7 @@ static int denali_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, denali_setup_dma(denali, DENALI_READ); /* wait for operation to complete */ - irq_status = wait_for_irq(denali, irq_mask); + wait_for_irq(denali, irq_mask); dma_sync_single_for_cpu(denali->dev, addr, size, DMA_FROM_DEVICE); @@ -1228,6 +1259,7 @@ static int denali_waitfunc(struct mtd_info *mtd, struct nand_chip *chip) { struct denali_nand_info *denali = mtd_to_denali(mtd); int status = denali->status; + denali->status = 0; return status; @@ -1237,20 +1269,19 @@ static int denali_erase(struct mtd_info *mtd, int page) { struct denali_nand_info *denali = mtd_to_denali(mtd); - uint32_t cmd = 0x0, irq_status = 0; + uint32_t cmd, irq_status; - /* clear interrupts */ clear_interrupts(denali); /* setup page read request for access type */ cmd = MODE_10 | BANK(denali->flash_bank) | page; - index_addr(denali, (uint32_t)cmd, 0x1); + index_addr(denali, cmd, 0x1); /* wait for erase to complete or failure to occur */ irq_status = wait_for_irq(denali, INTR_STATUS__ERASE_COMP | INTR_STATUS__ERASE_FAIL); - return (irq_status & INTR_STATUS__ERASE_FAIL) ? NAND_STATUS_FAIL : PASS; + return irq_status & INTR_STATUS__ERASE_FAIL ? NAND_STATUS_FAIL : PASS; } static void denali_cmdfunc(struct mtd_info *mtd, unsigned int cmd, int col, @@ -1269,17 +1300,16 @@ static void denali_cmdfunc(struct mtd_info *mtd, unsigned int cmd, int col, case NAND_CMD_READID: case NAND_CMD_PARAM: reset_buf(denali); - /*sometimes ManufactureId read from register is not right + /* + * sometimes ManufactureId read from register is not right * e.g. some of Micron MT29F32G08QAA MLC NAND chips * So here we send READID cmd to NAND insteand - * */ - addr = (uint32_t)MODE_11 | BANK(denali->flash_bank); - index_addr(denali, (uint32_t)addr | 0, 0x90); - index_addr(denali, (uint32_t)addr | 1, 0); + */ + addr = MODE_11 | BANK(denali->flash_bank); + index_addr(denali, addr | 0, 0x90); + index_addr(denali, addr | 1, 0); for (i = 0; i < 8; i++) { - index_addr_read_data(denali, - (uint32_t)addr | 2, - &id); + index_addr_read_data(denali, addr | 2, &id); write_byte_to_buf(denali, id); } break; @@ -1304,8 +1334,8 @@ static int denali_ecc_calculate(struct mtd_info *mtd, const uint8_t *data, uint8_t *ecc_code) { struct denali_nand_info *denali = mtd_to_denali(mtd); - dev_err(denali->dev, - "denali_ecc_calculate called unexpectedly\n"); + + dev_err(denali->dev, "denali_ecc_calculate called unexpectedly\n"); BUG(); return -EIO; } @@ -1314,8 +1344,8 @@ static int denali_ecc_correct(struct mtd_info *mtd, uint8_t *data, uint8_t *read_ecc, uint8_t *calc_ecc) { struct denali_nand_info *denali = mtd_to_denali(mtd); - dev_err(denali->dev, - "denali_ecc_correct called unexpectedly\n"); + + dev_err(denali->dev, "denali_ecc_correct called unexpectedly\n"); BUG(); return -EIO; } @@ -1323,8 +1353,8 @@ static int denali_ecc_correct(struct mtd_info *mtd, uint8_t *data, static void denali_ecc_hwctl(struct mtd_info *mtd, int mode) { struct denali_nand_info *denali = mtd_to_denali(mtd); - dev_err(denali->dev, - "denali_ecc_hwctl called unexpectedly\n"); + + dev_err(denali->dev, "denali_ecc_hwctl called unexpectedly\n"); BUG(); } /* end NAND core entry points */ @@ -1332,11 +1362,12 @@ static void denali_ecc_hwctl(struct mtd_info *mtd, int mode) /* Initialization code to bring the device up to a known good state */ static void denali_hw_init(struct denali_nand_info *denali) { - /* tell driver how many bit controller will skip before + /* + * tell driver how many bit controller will skip before * writing ECC code in OOB, this register may be already * set by firmware. So we read this value out. * if this value is 0, just let it be. - * */ + */ denali->bbtskipbytes = ioread32(denali->flash_reg + SPARE_AREA_SKIP_BYTES); detect_max_banks(denali); @@ -1354,10 +1385,11 @@ static void denali_hw_init(struct denali_nand_info *denali) denali_irq_init(denali); } -/* Althogh controller spec said SLC ECC is forceb to be 4bit, +/* + * Althogh controller spec said SLC ECC is forceb to be 4bit, * but denali controller in MRST only support 15bit and 8bit ECC * correction - * */ + */ #define ECC_8BITS 14 static struct nand_ecclayout nand_8bit_oob = { .eccbytes = 14, @@ -1397,13 +1429,16 @@ static void denali_drv_init(struct denali_nand_info *denali) denali->idx = 0; /* setup interrupt handler */ - /* the completion object will be used to notify - * the callee that the interrupt is done */ + /* + * the completion object will be used to notify + * the callee that the interrupt is done + */ init_completion(&denali->complete); - /* the spinlock will be used to synchronize the ISR - * with any element that might be access shared - * data (interrupt status) */ + /* + * the spinlock will be used to synchronize the ISR with any + * element that might be access shared data (interrupt status) + */ spin_lock_init(&denali->irq_lock); /* indicate that MTD has not selected a valid bank yet */ @@ -1418,7 +1453,8 @@ int denali_init(struct denali_nand_info *denali) int ret; if (denali->platform == INTEL_CE4100) { - /* Due to a silicon limitation, we can only support + /* + * Due to a silicon limitation, we can only support * ONFI timing mode 1 and below. */ if (onfi_timing_mode < -1 || onfi_timing_mode > 1) { @@ -1437,8 +1473,10 @@ int denali_init(struct denali_nand_info *denali) denali_hw_init(denali); denali_drv_init(denali); - /* denali_isr register is done after all the hardware - * initilization is finished*/ + /* + * denali_isr register is done after all the hardware + * initilization is finished + */ if (request_irq(denali->irq, denali_isr, IRQF_SHARED, DENALI_NAND_NAME, denali)) { pr_err("Spectra: Unable to allocate IRQ\n"); @@ -1457,9 +1495,11 @@ int denali_init(struct denali_nand_info *denali) denali->nand.read_byte = denali_read_byte; denali->nand.waitfunc = denali_waitfunc; - /* scan for NAND devices attached to the controller + /* + * scan for NAND devices attached to the controller * this is the first stage in a two step process to register - * with the nand subsystem */ + * with the nand subsystem + */ if (nand_scan_ident(&denali->mtd, denali->max_banks, NULL)) { ret = -ENXIO; goto failed_req_irq; @@ -1491,10 +1531,10 @@ int denali_init(struct denali_nand_info *denali) goto failed_req_irq; } - /* support for multi nand - * MTD known nothing about multi nand, - * so we should tell it the real pagesize - * and anything necessery + /* + * support for multi nand + * MTD known nothing about multi nand, so we should tell it + * the real pagesize and anything necessery */ denali->devnum = ioread32(denali->flash_reg + DEVICES_CONNECTED); denali->nand.chipsize <<= (denali->devnum - 1); @@ -1510,9 +1550,11 @@ int denali_init(struct denali_nand_info *denali) denali->mtd.size = denali->nand.numchips * denali->nand.chipsize; denali->bbtskipbytes *= denali->devnum; - /* second stage of the NAND scan + /* + * second stage of the NAND scan * this stage requires information regarding ECC and - * bad block management. */ + * bad block management. + */ /* Bad block management */ denali->nand.bbt_td = &bbt_main_descr; @@ -1523,7 +1565,8 @@ int denali_init(struct denali_nand_info *denali) denali->nand.options |= NAND_SKIP_BBTSCAN; denali->nand.ecc.mode = NAND_ECC_HW_SYNDROME; - /* Denali Controller only support 15bit and 8bit ECC in MRST, + /* + * Denali Controller only support 15bit and 8bit ECC in MRST, * so just let controller do 15bit ECC for MLC and 8bit ECC for * SLC if possible. * */ @@ -1539,8 +1582,7 @@ int denali_init(struct denali_nand_info *denali) } else if (denali->mtd.oobsize < (denali->bbtskipbytes + ECC_8BITS * (denali->mtd.writesize / ECC_SECTOR_SIZE))) { - pr_err("Your NAND chip OOB is not large enough to \ - contain 8bit ECC correction codes"); + pr_err("Your NAND chip OOB is not large enough to contain 8bit ECC correction codes"); goto failed_req_irq; } else { denali->nand.ecc.strength = 8; @@ -1559,18 +1601,19 @@ int denali_init(struct denali_nand_info *denali) denali->mtd.oobsize - denali->nand.ecc.layout->eccbytes - denali->bbtskipbytes; - /* Let driver know the total blocks number and - * how many blocks contained by each nand chip. - * blksperchip will help driver to know how many - * blocks is taken by FW. - * */ - denali->totalblks = denali->mtd.size >> - denali->nand.phys_erase_shift; + /* + * Let driver know the total blocks number and how many blocks + * contained by each nand chip. blksperchip will help driver to + * know how many blocks is taken by FW. + */ + denali->totalblks = denali->mtd.size >> denali->nand.phys_erase_shift; denali->blksperchip = denali->totalblks / denali->nand.numchips; - /* These functions are required by the NAND core framework, otherwise, + /* + * These functions are required by the NAND core framework, otherwise, * the NAND core will assert. However, we don't need them, so we'll stub - * them out. */ + * them out. + */ denali->nand.ecc.calculate = denali_ecc_calculate; denali->nand.ecc.correct = denali_ecc_correct; denali->nand.ecc.hwctl = denali_ecc_hwctl; @@ -1610,7 +1653,7 @@ void denali_remove(struct denali_nand_info *denali) { denali_irq_cleanup(denali->irq, denali); dma_unmap_single(denali->dev, denali->buf.dma_buf, - denali->mtd.writesize + denali->mtd.oobsize, - DMA_BIDIRECTIONAL); + denali->mtd.writesize + denali->mtd.oobsize, + DMA_BIDIRECTIONAL); } EXPORT_SYMBOL(denali_remove); diff --git a/drivers/mtd/nand/denali.h b/drivers/mtd/nand/denali.h index 966817462421..145bf88930e8 100644 --- a/drivers/mtd/nand/denali.h +++ b/drivers/mtd/nand/denali.h @@ -17,6 +17,9 @@ * */ +#ifndef __DENALI_H__ +#define __DENALI_H__ + #include <linux/mtd/nand.h> #define DEVICE_RESET 0x0 @@ -400,28 +403,6 @@ #define ONFI_BLOOM_TIME 1 #define MODE5_WORKAROUND 0 -/* lld_nand.h */ -/* - * NAND Flash Controller Device Driver - * Copyright (c) 2009, Intel Corporation and its suppliers. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * - */ - -#ifndef _LLD_NAND_ -#define _LLD_NAND_ #define MODE_00 0x00000000 #define MODE_01 0x04000000 @@ -499,4 +480,4 @@ struct denali_nand_info { extern int denali_init(struct denali_nand_info *denali); extern void denali_remove(struct denali_nand_info *denali); -#endif /*_LLD_NAND_*/ +#endif /* __DENALI_H__ */ diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c index 1550692973dc..7a915870d9d6 100644 --- a/drivers/mtd/nand/fsmc_nand.c +++ b/drivers/mtd/nand/fsmc_nand.c @@ -605,7 +605,7 @@ static int dma_xfer(struct fsmc_nand_data *host, void *buffer, int len, wait_for_completion_timeout(&host->dma_access_complete, msecs_to_jiffies(3000)); if (ret <= 0) { - chan->device->device_control(chan, DMA_TERMINATE_ALL, 0); + dmaengine_terminate_all(chan); dev_err(host->dev, "wait_for_completion_timeout\n"); if (!ret) ret = -ETIMEDOUT; diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index d8cdf06343fb..5b5c62712814 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -982,6 +982,15 @@ int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) chip->select_chip(mtd, chipnr); + /* + * Reset the chip. + * If we want to check the WP through READ STATUS and check the bit 7 + * we must reset the chip + * some operation can also clear the bit 7 of status register + * eg. erase/program a locked block + */ + chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); + /* Check, if it is write protected */ if (nand_check_wp(mtd)) { pr_debug("%s: device is write protected!\n", @@ -1032,6 +1041,15 @@ int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) chip->select_chip(mtd, chipnr); + /* + * Reset the chip. + * If we want to check the WP through READ STATUS and check the bit 7 + * we must reset the chip + * some operation can also clear the bit 7 of status register + * eg. erase/program a locked block + */ + chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); + /* Check, if it is write protected */ if (nand_check_wp(mtd)) { pr_debug("%s: device is write protected!\n", @@ -2391,8 +2409,8 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, blockmask = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1; /* Invalidate the page cache, when we write to the cached page */ - if (to <= (chip->pagebuf << chip->page_shift) && - (chip->pagebuf << chip->page_shift) < (to + ops->len)) + if (to <= ((loff_t)chip->pagebuf << chip->page_shift) && + ((loff_t)chip->pagebuf << chip->page_shift) < (to + ops->len)) chip->pagebuf = -1; /* Don't allow multipage oob writes with offset */ @@ -3576,6 +3594,8 @@ static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip, chip->options |= type->options; chip->ecc_strength_ds = NAND_ECC_STRENGTH(type); chip->ecc_step_ds = NAND_ECC_STEP(type); + chip->onfi_timing_mode_default = + type->onfi_timing_mode_default; *busw = type->options & NAND_BUSWIDTH_16; @@ -3918,8 +3938,7 @@ int nand_scan_tail(struct mtd_info *mtd) case NAND_ECC_HW_OOB_FIRST: /* Similar to NAND_ECC_HW, but a separate read_page handle */ if (!ecc->calculate || !ecc->correct || !ecc->hwctl) { - pr_warn("No ECC functions supplied; " - "hardware ECC not possible\n"); + pr_warn("No ECC functions supplied; hardware ECC not possible\n"); BUG(); } if (!ecc->read_page) @@ -3950,8 +3969,7 @@ int nand_scan_tail(struct mtd_info *mtd) ecc->read_page == nand_read_page_hwecc || !ecc->write_page || ecc->write_page == nand_write_page_hwecc)) { - pr_warn("No ECC functions supplied; " - "hardware ECC not possible\n"); + pr_warn("No ECC functions supplied; hardware ECC not possible\n"); BUG(); } /* Use standard syndrome read/write page function? */ @@ -3975,9 +3993,8 @@ int nand_scan_tail(struct mtd_info *mtd) } break; } - pr_warn("%d byte HW ECC not possible on " - "%d byte page size, fallback to SW ECC\n", - ecc->size, mtd->writesize); + pr_warn("%d byte HW ECC not possible on %d byte page size, fallback to SW ECC\n", + ecc->size, mtd->writesize); ecc->mode = NAND_ECC_SOFT; case NAND_ECC_SOFT: @@ -4030,8 +4047,7 @@ int nand_scan_tail(struct mtd_info *mtd) break; case NAND_ECC_NONE: - pr_warn("NAND_ECC_NONE selected by board driver. " - "This is not recommended!\n"); + pr_warn("NAND_ECC_NONE selected by board driver. This is not recommended!\n"); ecc->read_page = nand_read_page_raw; ecc->write_page = nand_write_page_raw; ecc->read_oob = nand_read_oob_std; diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 443fa82cde6a..9bb8453d224e 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -201,12 +201,12 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, res = mtd_read(mtd, from, len, &retlen, buf); if (res < 0) { if (mtd_is_eccerr(res)) { - pr_info("nand_bbt: ECC error in BBT at " - "0x%012llx\n", from & ~mtd->writesize); + pr_info("nand_bbt: ECC error in BBT at 0x%012llx\n", + from & ~mtd->writesize); return res; } else if (mtd_is_bitflip(res)) { - pr_info("nand_bbt: corrected error in BBT at " - "0x%012llx\n", from & ~mtd->writesize); + pr_info("nand_bbt: corrected error in BBT at 0x%012llx\n", + from & ~mtd->writesize); ret = res; } else { pr_info("nand_bbt: error reading BBT\n"); @@ -580,8 +580,8 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr if (td->pages[i] == -1) pr_warn("Bad block table not found for chip %d\n", i); else - pr_info("Bad block table found at page %d, version " - "0x%02X\n", td->pages[i], td->version[i]); + pr_info("Bad block table found at page %d, version 0x%02X\n", + td->pages[i], td->version[i]); } return 0; } @@ -725,12 +725,10 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, res = mtd_read(mtd, to, len, &retlen, buf); if (res < 0) { if (retlen != len) { - pr_info("nand_bbt: error reading block " - "for writing the bad block table\n"); + pr_info("nand_bbt: error reading block for writing the bad block table\n"); return res; } - pr_warn("nand_bbt: ECC error while reading " - "block for writing bad block table\n"); + pr_warn("nand_bbt: ECC error while reading block for writing bad block table\n"); } /* Read oob data */ ops.ooblen = (len >> this->page_shift) * mtd->oobsize; @@ -1338,9 +1336,8 @@ int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt) block = (int)(offs >> this->bbt_erase_shift); res = bbt_get_entry(this, block); - pr_debug("nand_isbad_bbt(): bbt info for offs 0x%08x: " - "(block %d) 0x%02x\n", - (unsigned int)offs, block, res); + pr_debug("nand_isbad_bbt(): bbt info for offs 0x%08x: (block %d) 0x%02x\n", + (unsigned int)offs, block, res); switch (res) { case BBT_BLOCK_GOOD: diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c index 3d7c89fc1031..fbde89105245 100644 --- a/drivers/mtd/nand/nand_ids.c +++ b/drivers/mtd/nand/nand_ids.c @@ -46,6 +46,10 @@ struct nand_flash_dev nand_flash_ids[] = { {"SDTNRGAMA 64G 3.3V 8-bit", { .id = {0x45, 0xde, 0x94, 0x93, 0x76, 0x50} }, SZ_16K, SZ_8K, SZ_4M, 0, 6, 1280, NAND_ECC_INFO(40, SZ_1K) }, + {"H27UCG8T2ATR-BC 64G 3.3V 8-bit", + { .id = {0xad, 0xde, 0x94, 0xda, 0x74, 0xc4} }, + SZ_8K, SZ_8K, SZ_2M, 0, 6, 640, NAND_ECC_INFO(40, SZ_1K), + 4 }, LEGACY_ID_NAND("NAND 4MiB 5V 8-bit", 0x6B, 4, SZ_8K, SP_OPTIONS), LEGACY_ID_NAND("NAND 4MiB 3,3V 8-bit", 0xE3, 4, SZ_8K, SP_OPTIONS), diff --git a/drivers/mtd/nand/nand_timings.c b/drivers/mtd/nand/nand_timings.c index 8b36253420fa..e81470a8ac67 100644 --- a/drivers/mtd/nand/nand_timings.c +++ b/drivers/mtd/nand/nand_timings.c @@ -42,7 +42,7 @@ static const struct nand_sdr_timings onfi_sdr_timings[] = { .tRHZ_max = 200000, .tRLOH_min = 0, .tRP_min = 50000, - .tRST_max = 250000000000, + .tRST_max = 250000000000ULL, .tWB_max = 200000, .tRR_min = 40000, .tWC_min = 100000, diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c index 4f0d83648e5a..7dc1dd28d896 100644 --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -827,7 +827,7 @@ static int parse_badblocks(struct nandsim *ns, struct mtd_info *mtd) NS_ERR("invalid badblocks.\n"); return -EINVAL; } - offset = erase_block_no * ns->geom.secsz; + offset = (loff_t)erase_block_no * ns->geom.secsz; if (mtd_block_markbad(mtd, offset)) { NS_ERR("invalid badblocks.\n"); return -EINVAL; diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c index 69eaba690a99..253a644da76a 100644 --- a/drivers/mtd/nand/ndfc.c +++ b/drivers/mtd/nand/ndfc.c @@ -203,7 +203,8 @@ static int ndfc_probe(struct platform_device *ofdev) struct ndfc_controller *ndfc; const __be32 *reg; u32 ccr; - int err, len, cs; + u32 cs; + int err, len; /* Read the reg property to get the chip select */ reg = of_get_property(ofdev->dev.of_node, "reg", &len); diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 5967b385141b..3b357e920a0c 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -136,7 +136,6 @@ #define BADBLOCK_MARKER_LENGTH 2 -#ifdef CONFIG_MTD_NAND_OMAP_BCH static u_char bch16_vector[] = {0xf5, 0x24, 0x1c, 0xd0, 0x61, 0xb3, 0xf1, 0x55, 0x2e, 0x2c, 0x86, 0xa3, 0xed, 0x36, 0x1b, 0x78, 0x48, 0x76, 0xa9, 0x3b, 0x97, 0xd1, 0x7a, 0x93, @@ -144,7 +143,6 @@ static u_char bch16_vector[] = {0xf5, 0x24, 0x1c, 0xd0, 0x61, 0xb3, 0xf1, 0x55, static u_char bch8_vector[] = {0xf3, 0xdb, 0x14, 0x16, 0x8b, 0xd2, 0xbe, 0xcc, 0xac, 0x6b, 0xff, 0x99, 0x7b}; static u_char bch4_vector[] = {0x00, 0x6b, 0x31, 0xdd, 0x41, 0xbc, 0x10}; -#endif /* oob info generated runtime depending on ecc algorithm and layout selected */ static struct nand_ecclayout omap_oobinfo; @@ -1292,7 +1290,6 @@ static int __maybe_unused omap_calculate_ecc_bch(struct mtd_info *mtd, return 0; } -#ifdef CONFIG_MTD_NAND_OMAP_BCH /** * erased_sector_bitflips - count bit flips * @data: data sector buffer @@ -1378,7 +1375,7 @@ static int omap_elm_correct_data(struct mtd_info *mtd, u_char *data, erased_ecc_vec = bch16_vector; break; default: - pr_err("invalid driver configuration\n"); + dev_err(&info->pdev->dev, "invalid driver configuration\n"); return -EINVAL; } @@ -1449,7 +1446,8 @@ static int omap_elm_correct_data(struct mtd_info *mtd, u_char *data, err = 0; for (i = 0; i < eccsteps; i++) { if (err_vec[i].error_uncorrectable) { - pr_err("nand: uncorrectable bit-flips found\n"); + dev_err(&info->pdev->dev, + "uncorrectable bit-flips found\n"); err = -EBADMSG; } else if (err_vec[i].error_reported) { for (j = 0; j < err_vec[i].error_count; j++) { @@ -1486,8 +1484,9 @@ static int omap_elm_correct_data(struct mtd_info *mtd, u_char *data, 1 << bit_pos; } } else { - pr_err("invalid bit-flip @ %d:%d\n", - byte_pos, bit_pos); + dev_err(&info->pdev->dev, + "invalid bit-flip @ %d:%d\n", + byte_pos, bit_pos); err = -EBADMSG; } } @@ -1593,33 +1592,71 @@ static int omap_read_page_bch(struct mtd_info *mtd, struct nand_chip *chip, /** * is_elm_present - checks for presence of ELM module by scanning DT nodes * @omap_nand_info: NAND device structure containing platform data - * @bch_type: 0x0=BCH4, 0x1=BCH8, 0x2=BCH16 */ -static int is_elm_present(struct omap_nand_info *info, - struct device_node *elm_node, enum bch_ecc bch_type) +static bool is_elm_present(struct omap_nand_info *info, + struct device_node *elm_node) { struct platform_device *pdev; - struct nand_ecc_ctrl *ecc = &info->nand.ecc; - int err; + /* check whether elm-id is passed via DT */ if (!elm_node) { - pr_err("nand: error: ELM DT node not found\n"); - return -ENODEV; + dev_err(&info->pdev->dev, "ELM devicetree node not found\n"); + return false; } pdev = of_find_device_by_node(elm_node); /* check whether ELM device is registered */ if (!pdev) { - pr_err("nand: error: ELM device not found\n"); - return -ENODEV; + dev_err(&info->pdev->dev, "ELM device not found\n"); + return false; } /* ELM module available, now configure it */ info->elm_dev = &pdev->dev; - err = elm_config(info->elm_dev, bch_type, - (info->mtd.writesize / ecc->size), ecc->size, ecc->bytes); + return true; +} - return err; +static bool omap2_nand_ecc_check(struct omap_nand_info *info, + struct omap_nand_platform_data *pdata) +{ + bool ecc_needs_bch, ecc_needs_omap_bch, ecc_needs_elm; + + switch (info->ecc_opt) { + case OMAP_ECC_BCH4_CODE_HW_DETECTION_SW: + case OMAP_ECC_BCH8_CODE_HW_DETECTION_SW: + ecc_needs_omap_bch = false; + ecc_needs_bch = true; + ecc_needs_elm = false; + break; + case OMAP_ECC_BCH4_CODE_HW: + case OMAP_ECC_BCH8_CODE_HW: + case OMAP_ECC_BCH16_CODE_HW: + ecc_needs_omap_bch = true; + ecc_needs_bch = false; + ecc_needs_elm = true; + break; + default: + ecc_needs_omap_bch = false; + ecc_needs_bch = false; + ecc_needs_elm = false; + break; + } + + if (ecc_needs_bch && !IS_ENABLED(CONFIG_MTD_NAND_ECC_BCH)) { + dev_err(&info->pdev->dev, + "CONFIG_MTD_NAND_ECC_BCH not enabled\n"); + return false; + } + if (ecc_needs_omap_bch && !IS_ENABLED(CONFIG_MTD_NAND_OMAP_BCH)) { + dev_err(&info->pdev->dev, + "CONFIG_MTD_NAND_OMAP_BCH not enabled\n"); + return false; + } + if (ecc_needs_elm && !is_elm_present(info, pdata->elm_of_node)) { + dev_err(&info->pdev->dev, "ELM not available\n"); + return false; + } + + return true; } -#endif /* CONFIG_MTD_NAND_ECC_BCH */ static int omap_nand_probe(struct platform_device *pdev) { @@ -1663,7 +1700,6 @@ static int omap_nand_probe(struct platform_device *pdev) mtd->owner = THIS_MODULE; nand_chip = &info->nand; nand_chip->ecc.priv = NULL; - nand_chip->options |= NAND_SKIP_BBTSCAN; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); nand_chip->IO_ADDR_R = devm_ioremap_resource(&pdev->dev, res); @@ -1692,17 +1728,22 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->chip_delay = 50; } + if (pdata->flash_bbt) + nand_chip->bbt_options |= NAND_BBT_USE_FLASH | NAND_BBT_NO_OOB; + else + nand_chip->options |= NAND_SKIP_BBTSCAN; + /* scan NAND device connected to chip controller */ nand_chip->options |= pdata->devsize & NAND_BUSWIDTH_16; if (nand_scan_ident(mtd, 1, NULL)) { - pr_err("nand device scan failed, may be bus-width mismatch\n"); + dev_err(&info->pdev->dev, "scan failed, may be bus-width mismatch\n"); err = -ENXIO; goto return_error; } /* check for small page devices */ if ((mtd->oobsize < 64) && (pdata->ecc_opt != OMAP_ECC_HAM1_CODE_HW)) { - pr_err("small page devices are not supported\n"); + dev_err(&info->pdev->dev, "small page devices are not supported\n"); err = -EINVAL; goto return_error; } @@ -1793,6 +1834,11 @@ static int omap_nand_probe(struct platform_device *pdev) goto return_error; } + if (!omap2_nand_ecc_check(info, pdata)) { + err = -EINVAL; + goto return_error; + } + /* populate MTD interface based on ECC scheme */ ecclayout = &omap_oobinfo; switch (info->ecc_opt) { @@ -1825,7 +1871,6 @@ static int omap_nand_probe(struct platform_device *pdev) break; case OMAP_ECC_BCH4_CODE_HW_DETECTION_SW: -#ifdef CONFIG_MTD_NAND_ECC_BCH pr_info("nand: using OMAP_ECC_BCH4_CODE_HW_DETECTION_SW\n"); nand_chip->ecc.mode = NAND_ECC_HW; nand_chip->ecc.size = 512; @@ -1853,18 +1898,13 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->ecc.bytes, &ecclayout); if (!nand_chip->ecc.priv) { - pr_err("nand: error: unable to use s/w BCH library\n"); + dev_err(&info->pdev->dev, "unable to use BCH library\n"); err = -EINVAL; + goto return_error; } break; -#else - pr_err("nand: error: CONFIG_MTD_NAND_ECC_BCH not enabled\n"); - err = -EINVAL; - goto return_error; -#endif case OMAP_ECC_BCH4_CODE_HW: -#ifdef CONFIG_MTD_NAND_OMAP_BCH pr_info("nand: using OMAP_ECC_BCH4_CODE_HW ECC scheme\n"); nand_chip->ecc.mode = NAND_ECC_HW; nand_chip->ecc.size = 512; @@ -1886,21 +1926,15 @@ static int omap_nand_probe(struct platform_device *pdev) /* reserved marker already included in ecclayout->eccbytes */ ecclayout->oobfree->offset = ecclayout->eccpos[ecclayout->eccbytes - 1] + 1; - /* This ECC scheme requires ELM H/W block */ - if (is_elm_present(info, pdata->elm_of_node, BCH4_ECC) < 0) { - pr_err("nand: error: could not initialize ELM\n"); - err = -ENODEV; + + err = elm_config(info->elm_dev, BCH4_ECC, + info->mtd.writesize / nand_chip->ecc.size, + nand_chip->ecc.size, nand_chip->ecc.bytes); + if (err < 0) goto return_error; - } break; -#else - pr_err("nand: error: CONFIG_MTD_NAND_OMAP_BCH not enabled\n"); - err = -EINVAL; - goto return_error; -#endif case OMAP_ECC_BCH8_CODE_HW_DETECTION_SW: -#ifdef CONFIG_MTD_NAND_ECC_BCH pr_info("nand: using OMAP_ECC_BCH8_CODE_HW_DETECTION_SW\n"); nand_chip->ecc.mode = NAND_ECC_HW; nand_chip->ecc.size = 512; @@ -1928,19 +1962,13 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->ecc.bytes, &ecclayout); if (!nand_chip->ecc.priv) { - pr_err("nand: error: unable to use s/w BCH library\n"); + dev_err(&info->pdev->dev, "unable to use BCH library\n"); err = -EINVAL; goto return_error; } break; -#else - pr_err("nand: error: CONFIG_MTD_NAND_ECC_BCH not enabled\n"); - err = -EINVAL; - goto return_error; -#endif case OMAP_ECC_BCH8_CODE_HW: -#ifdef CONFIG_MTD_NAND_OMAP_BCH pr_info("nand: using OMAP_ECC_BCH8_CODE_HW ECC scheme\n"); nand_chip->ecc.mode = NAND_ECC_HW; nand_chip->ecc.size = 512; @@ -1952,12 +1980,13 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->ecc.calculate = omap_calculate_ecc_bch; nand_chip->ecc.read_page = omap_read_page_bch; nand_chip->ecc.write_page = omap_write_page_bch; - /* This ECC scheme requires ELM H/W block */ - err = is_elm_present(info, pdata->elm_of_node, BCH8_ECC); - if (err < 0) { - pr_err("nand: error: could not initialize ELM\n"); + + err = elm_config(info->elm_dev, BCH8_ECC, + info->mtd.writesize / nand_chip->ecc.size, + nand_chip->ecc.size, nand_chip->ecc.bytes); + if (err < 0) goto return_error; - } + /* define ECC layout */ ecclayout->eccbytes = nand_chip->ecc.bytes * (mtd->writesize / @@ -1969,14 +1998,8 @@ static int omap_nand_probe(struct platform_device *pdev) ecclayout->oobfree->offset = ecclayout->eccpos[ecclayout->eccbytes - 1] + 1; break; -#else - pr_err("nand: error: CONFIG_MTD_NAND_OMAP_BCH not enabled\n"); - err = -EINVAL; - goto return_error; -#endif case OMAP_ECC_BCH16_CODE_HW: -#ifdef CONFIG_MTD_NAND_OMAP_BCH pr_info("using OMAP_ECC_BCH16_CODE_HW ECC scheme\n"); nand_chip->ecc.mode = NAND_ECC_HW; nand_chip->ecc.size = 512; @@ -1987,12 +2010,13 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->ecc.calculate = omap_calculate_ecc_bch; nand_chip->ecc.read_page = omap_read_page_bch; nand_chip->ecc.write_page = omap_write_page_bch; - /* This ECC scheme requires ELM H/W block */ - err = is_elm_present(info, pdata->elm_of_node, BCH16_ECC); - if (err < 0) { - pr_err("ELM is required for this ECC scheme\n"); + + err = elm_config(info->elm_dev, BCH16_ECC, + info->mtd.writesize / nand_chip->ecc.size, + nand_chip->ecc.size, nand_chip->ecc.bytes); + if (err < 0) goto return_error; - } + /* define ECC layout */ ecclayout->eccbytes = nand_chip->ecc.bytes * (mtd->writesize / @@ -2004,13 +2028,8 @@ static int omap_nand_probe(struct platform_device *pdev) ecclayout->oobfree->offset = ecclayout->eccpos[ecclayout->eccbytes - 1] + 1; break; -#else - pr_err("nand: error: CONFIG_MTD_NAND_OMAP_BCH not enabled\n"); - err = -EINVAL; - goto return_error; -#endif default: - pr_err("nand: error: invalid or unsupported ECC scheme\n"); + dev_err(&info->pdev->dev, "invalid or unsupported ECC scheme\n"); err = -EINVAL; goto return_error; } @@ -2022,8 +2041,9 @@ static int omap_nand_probe(struct platform_device *pdev) ecclayout->oobfree->length = mtd->oobsize - ecclayout->oobfree->offset; /* check if NAND device's OOB is enough to store ECC signatures */ if (mtd->oobsize < (ecclayout->eccbytes + BADBLOCK_MARKER_LENGTH)) { - pr_err("not enough OOB bytes required = %d, available=%d\n", - ecclayout->eccbytes, mtd->oobsize); + dev_err(&info->pdev->dev, + "not enough OOB bytes required = %d, available=%d\n", + ecclayout->eccbytes, mtd->oobsize); err = -EINVAL; goto return_error; } diff --git a/drivers/mtd/devices/elm.c b/drivers/mtd/nand/omap_elm.c index b4f61c7fc161..058531044ceb 100644 --- a/drivers/mtd/devices/elm.c +++ b/drivers/mtd/nand/omap_elm.c @@ -115,7 +115,7 @@ int elm_config(struct device *dev, enum bch_ecc bch_type, if (!info) { dev_err(dev, "Unable to configure elm - device not probed?\n"); - return -ENODEV; + return -EPROBE_DEFER; } /* ELM cannot detect ECC errors for chunks > 1KB */ if (ecc_step_size > ((ELM_ECC_SIZE + 1) / 2)) { diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c index c0670237e7a2..0ed7c603298f 100644 --- a/drivers/mtd/nand/sh_flctl.c +++ b/drivers/mtd/nand/sh_flctl.c @@ -395,7 +395,7 @@ static int flctl_dma_fifo0_transfer(struct sh_flctl *flctl, unsigned long *buf, msecs_to_jiffies(3000)); if (ret <= 0) { - chan->device->device_control(chan, DMA_TERMINATE_ALL, 0); + dmaengine_terminate_all(chan); dev_err(&flctl->pdev->dev, "wait_for_completion_timeout\n"); } diff --git a/drivers/mtd/nand/sm_common.h b/drivers/mtd/nand/sm_common.h index 00f4a83359b2..d3e028e58b0f 100644 --- a/drivers/mtd/nand/sm_common.h +++ b/drivers/mtd/nand/sm_common.h @@ -18,7 +18,7 @@ struct sm_oob { uint8_t ecc2[3]; uint8_t lba_copy2[2]; uint8_t ecc1[3]; -} __attribute__((packed)); +} __packed; /* one sector is always 512 bytes, but it can consist of two nand pages */ diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c index cf49c22673b9..c23184a47fc4 100644 --- a/drivers/mtd/sm_ftl.c +++ b/drivers/mtd/sm_ftl.c @@ -1058,7 +1058,7 @@ static int sm_write(struct mtd_blktrans_dev *dev, { struct sm_ftl *ftl = dev->priv; struct ftl_zone *zone; - int error, zone_num, block, boffset; + int error = 0, zone_num, block, boffset; BUG_ON(ftl->readonly); sm_break_offset(ftl, sec_no << 9, &zone_num, &block, &boffset); diff --git a/drivers/mtd/spi-nor/Kconfig b/drivers/mtd/spi-nor/Kconfig index f8acfa4310ef..64a4f0edabc7 100644 --- a/drivers/mtd/spi-nor/Kconfig +++ b/drivers/mtd/spi-nor/Kconfig @@ -7,6 +7,20 @@ menuconfig MTD_SPI_NOR if MTD_SPI_NOR +config MTD_SPI_NOR_USE_4K_SECTORS + bool "Use small 4096 B erase sectors" + default y + help + Many flash memories support erasing small (4096 B) sectors. Depending + on the usage this feature may provide performance gain in comparison + to erasing whole blocks (32/64 KiB). + Changing a small part of the flash's contents is usually faster with + small sectors. On the other hand erasing should be faster when using + 64 KiB block instead of 16 × 4 KiB sectors. + + Please note that some tools/drivers/filesystems may not work with + 4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum). + config SPI_FSL_QUADSPI tristate "Freescale Quad SPI controller" depends on ARCH_MXC diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c index 8d659a2888d5..d5269a26c839 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -881,7 +881,6 @@ static int fsl_qspi_probe(struct platform_device *pdev) /* iterate the subnodes. */ for_each_available_child_of_node(dev->of_node, np) { - const struct spi_device_id *id; char modalias[40]; /* skip the holes */ @@ -909,10 +908,6 @@ static int fsl_qspi_probe(struct platform_device *pdev) if (of_modalias_node(np, modalias, sizeof(modalias)) < 0) goto map_failed; - id = spi_nor_match_id(modalias); - if (!id) - goto map_failed; - ret = of_property_read_u32(np, "spi-max-frequency", &q->clk_rate); if (ret < 0) @@ -921,7 +916,7 @@ static int fsl_qspi_probe(struct platform_device *pdev) /* set the chip address for READID */ fsl_qspi_set_base_addr(q, nor); - ret = spi_nor_scan(nor, id, SPI_NOR_QUAD); + ret = spi_nor_scan(nor, modalias, SPI_NOR_QUAD); if (ret) goto map_failed; diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index b5ad6bebf5e7..c51ee52386a7 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -28,6 +28,8 @@ #define JEDEC_MFR(_jedec_id) ((_jedec_id) >> 16) +static const struct spi_device_id *spi_nor_match_id(const char *name); + /* * Read the status register, returning its value in the location * Return the status register value. @@ -473,7 +475,7 @@ struct flash_info { * more nor chips. This current list focusses on newer chips, which * have been converging on command sets which including JEDEC ID. */ -const struct spi_device_id spi_nor_ids[] = { +static const struct spi_device_id spi_nor_ids[] = { /* Atmel -- some are (confusingly) marketed as "DataFlash" */ { "at25fs010", INFO(0x1f6601, 0, 32 * 1024, 4, SECT_4K) }, { "at25fs040", INFO(0x1f6604, 0, 64 * 1024, 8, SECT_4K) }, @@ -611,6 +613,7 @@ const struct spi_device_id spi_nor_ids[] = { { "m25px32-s0", INFO(0x207316, 0, 64 * 1024, 64, SECT_4K) }, { "m25px32-s1", INFO(0x206316, 0, 64 * 1024, 64, SECT_4K) }, { "m25px64", INFO(0x207117, 0, 64 * 1024, 128, 0) }, + { "m25px80", INFO(0x207114, 0, 64 * 1024, 16, 0) }, /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */ { "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) }, @@ -623,7 +626,6 @@ const struct spi_device_id spi_nor_ids[] = { { "w25q32dw", INFO(0xef6016, 0, 64 * 1024, 64, SECT_4K) }, { "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) }, { "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) }, - { "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) }, { "w25q80", INFO(0xef5014, 0, 64 * 1024, 16, SECT_4K) }, { "w25q80bl", INFO(0xef4014, 0, 64 * 1024, 16, SECT_4K) }, { "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) }, @@ -637,7 +639,6 @@ const struct spi_device_id spi_nor_ids[] = { { "cat25128", CAT25_INFO(2048, 8, 64, 2, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) }, { }, }; -EXPORT_SYMBOL_GPL(spi_nor_ids); static const struct spi_device_id *spi_nor_read_id(struct spi_nor *nor) { @@ -671,11 +672,6 @@ static const struct spi_device_id *spi_nor_read_id(struct spi_nor *nor) return ERR_PTR(-ENODEV); } -static const struct spi_device_id *jedec_probe(struct spi_nor *nor) -{ - return nor->read_id(nor); -} - static int spi_nor_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { @@ -916,11 +912,10 @@ static int spi_nor_check(struct spi_nor *nor) return 0; } -int spi_nor_scan(struct spi_nor *nor, const struct spi_device_id *id, - enum read_mode mode) +int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode) { + const struct spi_device_id *id = NULL; struct flash_info *info; - struct flash_platform_data *data; struct device *dev = nor->dev; struct mtd_info *mtd = nor->mtd; struct device_node *np = dev->of_node; @@ -931,34 +926,16 @@ int spi_nor_scan(struct spi_nor *nor, const struct spi_device_id *id, if (ret) return ret; - /* Platform data helps sort out which chip type we have, as - * well as how this board partitions it. If we don't have - * a chip ID, try the JEDEC id commands; they'll work for most - * newer chips, even if we don't recognize the particular chip. - */ - data = dev_get_platdata(dev); - if (data && data->type) { - const struct spi_device_id *plat_id; - - for (i = 0; i < ARRAY_SIZE(spi_nor_ids) - 1; i++) { - plat_id = &spi_nor_ids[i]; - if (strcmp(data->type, plat_id->name)) - continue; - break; - } - - if (i < ARRAY_SIZE(spi_nor_ids) - 1) - id = plat_id; - else - dev_warn(dev, "unrecognized id %s\n", data->type); - } + id = spi_nor_match_id(name); + if (!id) + return -ENOENT; info = (void *)id->driver_data; if (info->jedec_id) { const struct spi_device_id *jid; - jid = jedec_probe(nor); + jid = nor->read_id(nor); if (IS_ERR(jid)) { return PTR_ERR(jid); } else if (jid != id) { @@ -990,11 +967,8 @@ int spi_nor_scan(struct spi_nor *nor, const struct spi_device_id *id, write_sr(nor, 0); } - if (data && data->name) - mtd->name = data->name; - else + if (!mtd->name) mtd->name = dev_name(dev); - mtd->type = MTD_NORFLASH; mtd->writesize = 1; mtd->flags = MTD_CAP_NORFLASH; @@ -1018,6 +992,7 @@ int spi_nor_scan(struct spi_nor *nor, const struct spi_device_id *id, nor->wait_till_ready == spi_nor_wait_till_ready) nor->wait_till_ready = spi_nor_wait_till_fsr_ready; +#ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS /* prefer "small sector" erase if possible */ if (info->flags & SECT_4K) { nor->erase_opcode = SPINOR_OP_BE_4K; @@ -1025,7 +1000,9 @@ int spi_nor_scan(struct spi_nor *nor, const struct spi_device_id *id, } else if (info->flags & SECT_4K_PMC) { nor->erase_opcode = SPINOR_OP_BE_4K_PMC; mtd->erasesize = 4096; - } else { + } else +#endif + { nor->erase_opcode = SPINOR_OP_SE; mtd->erasesize = info->sector_size; } @@ -1141,7 +1118,7 @@ int spi_nor_scan(struct spi_nor *nor, const struct spi_device_id *id, } EXPORT_SYMBOL_GPL(spi_nor_scan); -const struct spi_device_id *spi_nor_match_id(char *name) +static const struct spi_device_id *spi_nor_match_id(const char *name) { const struct spi_device_id *id = spi_nor_ids; @@ -1152,7 +1129,6 @@ const struct spi_device_id *spi_nor_match_id(char *name) } return NULL; } -EXPORT_SYMBOL_GPL(spi_nor_match_id); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Huang Shijie <shijie8@gmail.com>"); diff --git a/drivers/mtd/tests/mtd_test.c b/drivers/mtd/tests/mtd_test.c index 111ee46a7428..34736bbcc07b 100644 --- a/drivers/mtd/tests/mtd_test.c +++ b/drivers/mtd/tests/mtd_test.c @@ -10,7 +10,7 @@ int mtdtest_erase_eraseblock(struct mtd_info *mtd, unsigned int ebnum) { int err; struct erase_info ei; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; memset(&ei, 0, sizeof(struct erase_info)); ei.mtd = mtd; @@ -33,7 +33,7 @@ int mtdtest_erase_eraseblock(struct mtd_info *mtd, unsigned int ebnum) static int is_block_bad(struct mtd_info *mtd, unsigned int ebnum) { int ret; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; ret = mtd_block_isbad(mtd, addr); if (ret) diff --git a/drivers/mtd/tests/nandbiterrs.c b/drivers/mtd/tests/nandbiterrs.c index 6f976159611f..273f7e553954 100644 --- a/drivers/mtd/tests/nandbiterrs.c +++ b/drivers/mtd/tests/nandbiterrs.c @@ -364,7 +364,7 @@ static int __init mtd_nandbiterrs_init(void) pr_info("Device uses %d subpages of %d bytes\n", subcount, subsize); - offset = page_offset * mtd->writesize; + offset = (loff_t)page_offset * mtd->writesize; eraseblock = mtd_div_by_eb(offset, mtd); pr_info("Using page=%u, offset=%llu, eraseblock=%u\n", diff --git a/drivers/mtd/tests/oobtest.c b/drivers/mtd/tests/oobtest.c index f19ab1acde1f..dc4f9602b97e 100644 --- a/drivers/mtd/tests/oobtest.c +++ b/drivers/mtd/tests/oobtest.c @@ -120,7 +120,7 @@ static int verify_eraseblock(int ebnum) int i; struct mtd_oob_ops ops; int err = 0; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; prandom_bytes_state(&rnd_state, writebuf, use_len_max * pgcnt); for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) { @@ -214,7 +214,7 @@ static int verify_eraseblock_in_one_go(int ebnum) { struct mtd_oob_ops ops; int err = 0; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; size_t len = mtd->ecclayout->oobavail * pgcnt; prandom_bytes_state(&rnd_state, writebuf, len); @@ -568,7 +568,7 @@ static int __init mtd_oobtest_init(void) size_t sz = mtd->ecclayout->oobavail; if (bbt[i] || bbt[i + 1]) continue; - addr = (i + 1) * mtd->erasesize - mtd->writesize; + addr = (loff_t)(i + 1) * mtd->erasesize - mtd->writesize; prandom_bytes_state(&rnd_state, writebuf, sz * cnt); for (pg = 0; pg < cnt; ++pg) { ops.mode = MTD_OPS_AUTO_OOB; @@ -598,7 +598,7 @@ static int __init mtd_oobtest_init(void) continue; prandom_bytes_state(&rnd_state, writebuf, mtd->ecclayout->oobavail * 2); - addr = (i + 1) * mtd->erasesize - mtd->writesize; + addr = (loff_t)(i + 1) * mtd->erasesize - mtd->writesize; ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; diff --git a/drivers/mtd/tests/pagetest.c b/drivers/mtd/tests/pagetest.c index ed2d3f656fd2..88296e888e9d 100644 --- a/drivers/mtd/tests/pagetest.c +++ b/drivers/mtd/tests/pagetest.c @@ -52,7 +52,7 @@ static struct rnd_state rnd_state; static int write_eraseblock(int ebnum) { - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; prandom_bytes_state(&rnd_state, writebuf, mtd->erasesize); cond_resched(); @@ -64,7 +64,7 @@ static int verify_eraseblock(int ebnum) uint32_t j; int err = 0, i; loff_t addr0, addrn; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; addr0 = 0; for (i = 0; i < ebcnt && bbt[i]; ++i) diff --git a/drivers/mtd/tests/readtest.c b/drivers/mtd/tests/readtest.c index 626e66d0f7e7..a54cf1511114 100644 --- a/drivers/mtd/tests/readtest.c +++ b/drivers/mtd/tests/readtest.c @@ -47,7 +47,7 @@ static int pgcnt; static int read_eraseblock_by_page(int ebnum) { int i, ret, err = 0; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; void *buf = iobuf; void *oobbuf = iobuf1; diff --git a/drivers/mtd/tests/speedtest.c b/drivers/mtd/tests/speedtest.c index 87ff6a29f84e..5ee9f7021020 100644 --- a/drivers/mtd/tests/speedtest.c +++ b/drivers/mtd/tests/speedtest.c @@ -55,7 +55,7 @@ static int multiblock_erase(int ebnum, int blocks) { int err; struct erase_info ei; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; memset(&ei, 0, sizeof(struct erase_info)); ei.mtd = mtd; @@ -80,7 +80,7 @@ static int multiblock_erase(int ebnum, int blocks) static int write_eraseblock(int ebnum) { - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; return mtdtest_write(mtd, addr, mtd->erasesize, iobuf); } @@ -88,7 +88,7 @@ static int write_eraseblock(int ebnum) static int write_eraseblock_by_page(int ebnum) { int i, err = 0; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; void *buf = iobuf; for (i = 0; i < pgcnt; i++) { @@ -106,7 +106,7 @@ static int write_eraseblock_by_2pages(int ebnum) { size_t sz = pgsize * 2; int i, n = pgcnt / 2, err = 0; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; void *buf = iobuf; for (i = 0; i < n; i++) { @@ -124,7 +124,7 @@ static int write_eraseblock_by_2pages(int ebnum) static int read_eraseblock(int ebnum) { - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; return mtdtest_read(mtd, addr, mtd->erasesize, iobuf); } @@ -132,7 +132,7 @@ static int read_eraseblock(int ebnum) static int read_eraseblock_by_page(int ebnum) { int i, err = 0; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; void *buf = iobuf; for (i = 0; i < pgcnt; i++) { @@ -150,7 +150,7 @@ static int read_eraseblock_by_2pages(int ebnum) { size_t sz = pgsize * 2; int i, n = pgcnt / 2, err = 0; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; void *buf = iobuf; for (i = 0; i < n; i++) { diff --git a/drivers/mtd/tests/subpagetest.c b/drivers/mtd/tests/subpagetest.c index a876371ad410..7b59ef522d5e 100644 --- a/drivers/mtd/tests/subpagetest.c +++ b/drivers/mtd/tests/subpagetest.c @@ -57,7 +57,7 @@ static int write_eraseblock(int ebnum) { size_t written; int err = 0; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; prandom_bytes_state(&rnd_state, writebuf, subpgsize); err = mtd_write(mtd, addr, subpgsize, &written, writebuf); @@ -92,7 +92,7 @@ static int write_eraseblock2(int ebnum) { size_t written; int err = 0, k; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; for (k = 1; k < 33; ++k) { if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize) @@ -131,7 +131,7 @@ static int verify_eraseblock(int ebnum) { size_t read; int err = 0; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; prandom_bytes_state(&rnd_state, writebuf, subpgsize); clear_data(readbuf, subpgsize); @@ -192,7 +192,7 @@ static int verify_eraseblock2(int ebnum) { size_t read; int err = 0, k; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; for (k = 1; k < 33; ++k) { if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize) @@ -227,7 +227,7 @@ static int verify_eraseblock_ff(int ebnum) uint32_t j; size_t read; int err = 0; - loff_t addr = ebnum * mtd->erasesize; + loff_t addr = (loff_t)ebnum * mtd->erasesize; memset(writebuf, 0xff, subpgsize); for (j = 0; j < mtd->erasesize / subpgsize; ++j) { diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c index 33c64955d4d7..8876c7d3d712 100644 --- a/drivers/mtd/ubi/block.c +++ b/drivers/mtd/ubi/block.c @@ -188,8 +188,9 @@ static int ubiblock_read_to_buf(struct ubiblock *dev, char *buffer, ret = ubi_read(dev->desc, leb, buffer, offset, len); if (ret) { - ubi_err("%s ubi_read error %d", - dev->gd->disk_name, ret); + ubi_err("%s: error %d while reading from LEB %d (offset %d, " + "length %d)", dev->gd->disk_name, ret, leb, offset, + len); return ret; } return 0; @@ -378,7 +379,7 @@ int ubiblock_create(struct ubi_volume_info *vi) { struct ubiblock *dev; struct gendisk *gd; - u64 disk_capacity = ((u64)vi->size * vi->usable_leb_size) >> 9; + u64 disk_capacity = vi->used_bytes >> 9; int ret; if ((sector_t)disk_capacity != disk_capacity) @@ -502,13 +503,8 @@ int ubiblock_remove(struct ubi_volume_info *vi) static int ubiblock_resize(struct ubi_volume_info *vi) { struct ubiblock *dev; - u64 disk_capacity = ((u64)vi->size * vi->usable_leb_size) >> 9; + u64 disk_capacity = vi->used_bytes >> 9; - if ((sector_t)disk_capacity != disk_capacity) { - ubi_warn("%s: the volume is too big, cannot resize (%d LEBs)", - dev->gd->disk_name, vi->size); - return -EFBIG; - } /* * Need to lock the device list until we stop using the device, * otherwise the device struct might get released in @@ -520,10 +516,20 @@ static int ubiblock_resize(struct ubi_volume_info *vi) mutex_unlock(&devices_mutex); return -ENODEV; } + if ((sector_t)disk_capacity != disk_capacity) { + mutex_unlock(&devices_mutex); + ubi_warn("%s: the volume is too big (%d LEBs), cannot resize", + dev->gd->disk_name, vi->size); + return -EFBIG; + } mutex_lock(&dev->dev_mutex); - set_capacity(dev->gd, disk_capacity); - ubi_msg("%s resized to %d LEBs", dev->gd->disk_name, vi->size); + + if (get_capacity(dev->gd) != disk_capacity) { + set_capacity(dev->gd, disk_capacity); + ubi_msg("%s resized to %lld bytes", dev->gd->disk_name, + vi->used_bytes); + } mutex_unlock(&dev->dev_mutex); mutex_unlock(&devices_mutex); return 0; @@ -547,6 +553,14 @@ static int ubiblock_notify(struct notifier_block *nb, case UBI_VOLUME_RESIZED: ubiblock_resize(&nt->vi); break; + case UBI_VOLUME_UPDATED: + /* + * If the volume is static, a content update might mean the + * size (i.e. used_bytes) was also changed. + */ + if (nt->vi.vol_type == UBI_STATIC_VOLUME) + ubiblock_resize(&nt->vi); + break; default: break; } diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c index 7646220ca6e2..59de69a24e40 100644 --- a/drivers/mtd/ubi/cdev.c +++ b/drivers/mtd/ubi/cdev.c @@ -425,8 +425,10 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd, break; err = ubi_start_update(ubi, vol, bytes); - if (bytes == 0) + if (bytes == 0) { + ubi_volume_notify(ubi, vol, UBI_VOLUME_UPDATED); revoke_exclusive(desc, UBI_READWRITE); + } break; } @@ -699,7 +701,7 @@ static int rename_volumes(struct ubi_device *ubi, req->ents[i].name[req->ents[i].name_len] = '\0'; n = strlen(req->ents[i].name); if (n != req->ents[i].name_len) - err = -EINVAL; + return -EINVAL; } /* Make sure volume IDs and names are unique */ diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c index 0e11671dadc4..2402d3b50171 100644 --- a/drivers/mtd/ubi/eba.c +++ b/drivers/mtd/ubi/eba.c @@ -441,10 +441,9 @@ retry: err = ubi_io_read_data(ubi, buf, pnum, offset, len); if (err) { - if (err == UBI_IO_BITFLIPS) { + if (err == UBI_IO_BITFLIPS) scrub = 1; - err = 0; - } else if (mtd_is_eccerr(err)) { + else if (mtd_is_eccerr(err)) { if (vol->vol_type == UBI_DYNAMIC_VOLUME) goto out_unlock; scrub = 1; diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c index 0431b46d9fd9..cfd5b5e90156 100644 --- a/drivers/mtd/ubi/fastmap.c +++ b/drivers/mtd/ubi/fastmap.c @@ -24,7 +24,8 @@ size_t ubi_calc_fm_size(struct ubi_device *ubi) { size_t size; - size = sizeof(struct ubi_fm_hdr) + \ + size = sizeof(struct ubi_fm_sb) + \ + sizeof(struct ubi_fm_hdr) + \ sizeof(struct ubi_fm_scan_pool) + \ sizeof(struct ubi_fm_scan_pool) + \ (ubi->peb_count * sizeof(struct ubi_fm_ec)) + \ @@ -330,6 +331,7 @@ static int process_pool_aeb(struct ubi_device *ubi, struct ubi_attach_info *ai, av = tmp_av; else { ubi_err("orphaned volume in fastmap pool!"); + kmem_cache_free(ai->aeb_slab_cache, new_aeb); return UBI_BAD_FASTMAP; } diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h index 7bf416329c19..320fc38fa2a1 100644 --- a/drivers/mtd/ubi/ubi.h +++ b/drivers/mtd/ubi/ubi.h @@ -439,7 +439,8 @@ struct ubi_debug_info { * @move_to, @move_to_put @erase_pending, @wl_scheduled, @works, * @erroneous, and @erroneous_peb_count fields * @move_mutex: serializes eraseblock moves - * @work_sem: synchronizes the WL worker with use tasks + * @work_sem: used to wait for all the scheduled works to finish and prevent + * new works from being submitted * @wl_scheduled: non-zero if the wear-leveling was scheduled * @lookuptbl: a table to quickly find a &struct ubi_wl_entry object for any * physical eraseblock @@ -713,14 +714,15 @@ struct ubi_attach_info { * @torture: if the physical eraseblock has to be tortured * @anchor: produce a anchor PEB to by used by fastmap * - * The @func pointer points to the worker function. If the @cancel argument is - * not zero, the worker has to free the resources and exit immediately. The - * worker has to return zero in case of success and a negative error code in + * The @func pointer points to the worker function. If the @shutdown argument is + * not zero, the worker has to free the resources and exit immediately as the + * WL sub-system is shutting down. + * The worker has to return zero in case of success and a negative error code in * case of failure. */ struct ubi_work { struct list_head list; - int (*func)(struct ubi_device *ubi, struct ubi_work *wrk, int cancel); + int (*func)(struct ubi_device *ubi, struct ubi_work *wrk, int shutdown); /* The below fields are only relevant to erasure works */ struct ubi_wl_entry *e; int vol_id; diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 20f491713145..6654f191868e 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -272,7 +272,7 @@ static int produce_free_peb(struct ubi_device *ubi) { int err; - while (!ubi->free.rb_node) { + while (!ubi->free.rb_node && ubi->works_count) { spin_unlock(&ubi->wl_lock); dbg_wl("do one work synchronously"); @@ -835,7 +835,7 @@ repeat: * @wrk: the work to schedule * * This function adds a work defined by @wrk to the tail of the pending works - * list. Can only be used of ubi->work_sem is already held in read mode! + * list. Can only be used if ubi->work_sem is already held in read mode! */ static void __schedule_ubi_work(struct ubi_device *ubi, struct ubi_work *wrk) { @@ -864,7 +864,7 @@ static void schedule_ubi_work(struct ubi_device *ubi, struct ubi_work *wrk) } static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk, - int cancel); + int shutdown); #ifdef CONFIG_MTD_UBI_FASTMAP /** @@ -990,14 +990,15 @@ int ubi_wl_put_fm_peb(struct ubi_device *ubi, struct ubi_wl_entry *fm_e, * wear_leveling_worker - wear-leveling worker function. * @ubi: UBI device description object * @wrk: the work object - * @cancel: non-zero if the worker has to free memory and exit + * @shutdown: non-zero if the worker has to free memory and exit + * because the WL-subsystem is shutting down * * This function copies a more worn out physical eraseblock to a less worn out * one. Returns zero in case of success and a negative error code in case of * failure. */ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk, - int cancel) + int shutdown) { int err, scrubbing = 0, torture = 0, protect = 0, erroneous = 0; int vol_id = -1, uninitialized_var(lnum); @@ -1008,7 +1009,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk, struct ubi_vid_hdr *vid_hdr; kfree(wrk); - if (cancel) + if (shutdown) return 0; vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS); @@ -1407,7 +1408,8 @@ int ubi_ensure_anchor_pebs(struct ubi_device *ubi) * erase_worker - physical eraseblock erase worker function. * @ubi: UBI device description object * @wl_wrk: the work object - * @cancel: non-zero if the worker has to free memory and exit + * @shutdown: non-zero if the worker has to free memory and exit + * because the WL sub-system is shutting down * * This function erases a physical eraseblock and perform torture testing if * needed. It also takes care about marking the physical eraseblock bad if @@ -1415,7 +1417,7 @@ int ubi_ensure_anchor_pebs(struct ubi_device *ubi) * failure. */ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk, - int cancel) + int shutdown) { struct ubi_wl_entry *e = wl_wrk->e; int pnum = e->pnum; @@ -1423,7 +1425,7 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk, int lnum = wl_wrk->lnum; int err, available_consumed = 0; - if (cancel) { + if (shutdown) { dbg_wl("cancel erasure of PEB %d EC %d", pnum, e->ec); kfree(wl_wrk); kmem_cache_free(ubi_wl_entry_slab, e); @@ -1845,10 +1847,10 @@ int ubi_thread(void *u) } /** - * cancel_pending - cancel all pending works. + * shutdown_work - shutdown all pending works. * @ubi: UBI device description object */ -static void cancel_pending(struct ubi_device *ubi) +static void shutdown_work(struct ubi_device *ubi) { while (!list_empty(&ubi->works)) { struct ubi_work *wrk; @@ -1997,7 +1999,7 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai) return 0; out_free: - cancel_pending(ubi); + shutdown_work(ubi); tree_destroy(&ubi->used); tree_destroy(&ubi->free); tree_destroy(&ubi->scrub); @@ -2029,7 +2031,7 @@ static void protection_queue_destroy(struct ubi_device *ubi) void ubi_wl_close(struct ubi_device *ubi) { dbg_wl("close the WL sub-system"); - cancel_pending(ubi); + shutdown_work(ubi); protection_queue_destroy(ubi); tree_destroy(&ubi->used); tree_destroy(&ubi->erroneous); |