From 12c8eb98de747ebc08404e3719c40abb405994e2 Mon Sep 17 00:00:00 2001 From: Baruch Siach Date: Mon, 9 Aug 2010 07:20:23 +0300 Subject: mtd: fix callback return value check Drivers may (and do) return negative errno values other than -1 from the ecc.correct callback. Signed-off-by: Baruch Siach Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index d551ddd9537a..0fd22cce0ecc 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1223,7 +1223,7 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, uint3 int stat; stat = chip->ecc.correct(mtd, p, &chip->buffers->ecccode[i], &chip->buffers->ecccalc[i]); - if (stat == -1) + if (stat < 0) mtd->ecc_stats.failed++; else mtd->ecc_stats.corrected += stat; -- cgit v1.2.3 From 2173bae81e17b710328bc877e7b9ade7f4b90064 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Thu, 19 Aug 2010 08:11:02 -0700 Subject: mtd: nand: spansion S30MLxxxP support Some Spansion chips have a method for determining eraseblock size that is incompatible with similar ID chips of other sizes. This implements some heuristic detection of these differences. This patch checks for a 5-byte ID with trailing zeros as well as a 512-byte page size to ensure that chips are not misdetected as the S30MLxxxP ORNAND series. [Tweaked by Artem a bit] Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 0fd22cce0ecc..b0f091aca097 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2900,6 +2900,19 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, mtd->writesize = type->pagesize; mtd->oobsize = mtd->writesize / 32; busw = type->options & NAND_BUSWIDTH_16; + + /* + * Check for Spansion/AMD ID + repeating 5th, 6th byte since + * some Spansion chips have erasesize that conflicts with size + * listed in nand_ids table + * Data sheet (5 byte ID): Spansion S30ML-P ORNAND (p.39) + */ + if (*maf_id == NAND_MFR_AMD && id_data[4] != 0x00 && + id_data[5] == 0x00 && id_data[6] == 0x00 && + id_data[7] == 0x00 && mtd->writesize == 512) { + mtd->erasesize = 128 * 1024; + mtd->erasesize <<= ((id_data[3] & 0x03) << 1); + } } /* Try to identify manufacturer */ -- cgit v1.2.3 From cc26c3cd3d1cf40a07f2b19ac4c53d517bee52a5 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 24 Aug 2010 18:12:00 -0700 Subject: mtd: nand: expand nand_ecc_layout, deprecate ioctl ECCGETLAYOUT struct nand_ecclayout is too small for many new chips; OOB regions can be as large as 448 bytes and may increase more in the future. Thus, copying that struct to user-space with the ECCGETLAYOUT ioctl is not a good idea; the ioctl would have to be updated every time there's a change to the current largest size. Instead, the old nand_ecclayout is renamed to nand_ecclayout_user and a new struct nand_ecclayout is created that can accomodate larger sizes and expand without affecting the user-space. struct nand_ecclayout can still be used in board drivers without modification -- at least for now. A new function is provided to convert from the new to the old in order to allow the deprecated ioctl to continue to work with truncated data. Perhaps the ioctl, the conversion process, and the struct nand_ecclayout_user can be removed altogether in the future. Note: There are comments in nand/davinci_nand.c::nand_davinci_probe() regarding this issue; this driver (and maybe others) can be updated to account for extra space. All kernel drivers can use the expanded nand_ecclayout as a drop-in replacement and ignore its benefits. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/mtdchar.c | 48 ++++++++++++++++++++++++++++++++++++++--- drivers/mtd/nand/davinci_nand.c | 3 +++ 2 files changed, 48 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index a825002123c8..24d35ba62b84 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -477,6 +477,39 @@ static int mtd_do_readoob(struct mtd_info *mtd, uint64_t start, return ret; } +/* + * Copies (and truncates, if necessary) data from the larger struct, + * nand_ecclayout, to the smaller, deprecated layout struct, + * nand_ecclayout_user. This is necessary only to suppport the deprecated + * API ioctl ECCGETLAYOUT while allowing all new functionality to use + * nand_ecclayout flexibly (i.e. the struct may change size in new + * releases without requiring major rewrites). + */ +static int shrink_ecclayout(const struct nand_ecclayout *from, + struct nand_ecclayout_user *to) +{ + int i; + + if (!from || !to) + return -EINVAL; + + memset(to, 0, sizeof(*to)); + + to->eccbytes = min((int)from->eccbytes, MTD_MAX_ECCPOS_ENTRIES_OLD); + for (i = 0; i < to->eccbytes; i++) + to->eccpos[i] = from->eccpos[i]; + + for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES; i++) { + if (from->oobfree[i].length == 0 && + from->oobfree[i].offset == 0) + break; + to->oobavail += from->oobfree[i].length; + to->oobfree[i] = from->oobfree[i]; + } + + return 0; +} + static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) { struct mtd_file_info *mfi = file->private_data; @@ -812,14 +845,23 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) } #endif + /* This ioctl is being deprecated - it truncates the ecc layout */ case ECCGETLAYOUT: { + struct nand_ecclayout_user *usrlay; + if (!mtd->ecclayout) return -EOPNOTSUPP; - if (copy_to_user(argp, mtd->ecclayout, - sizeof(struct nand_ecclayout))) - return -EFAULT; + usrlay = kmalloc(sizeof(*usrlay), GFP_KERNEL); + if (!usrlay) + return -ENOMEM; + + shrink_ecclayout(mtd->ecclayout, usrlay); + + if (copy_to_user(argp, usrlay, sizeof(*usrlay))) + ret = -EFAULT; + kfree(usrlay); break; } diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index 2ac7367afe77..70698e86e437 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -749,6 +749,9 @@ static int __init nand_davinci_probe(struct platform_device *pdev) * breaks userspace ioctl interface with mtd-utils. Once we * resolve this issue, NAND_ECC_HW_OOB_FIRST mode can be used * for the 4KiB page chips. + * + * TODO: Note that nand_ecclayout has now been expanded and can + * hold plenty of OOB entries. */ dev_warn(&pdev->dev, "no 4-bit ECC support yet " "for 4KiB-page NAND\n"); -- cgit v1.2.3 From 0ceacf36e9c41859a6072342d27cf6e60776c523 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Sun, 19 Sep 2010 23:57:12 -0700 Subject: mtd: edit comments on deprecation of ioctl ECCGETLAYOUT There were some improvements and additions necessary in the comments explaining of the expansion of nand_ecclayout, the introduction of nand_ecclayout_user, and the deprecation of the ioctl ECCGETLAYOUT. Also, I found a better placement for the macro MTD_MAX_ECCPOS_ENTRIES; next to the definition of MTD_MAX_OOBFREE_ENTRIES in mtd-abi.h. The macro is really only important for the ioctl code (found in drivers/mtd/mtdchar.c) but since there are small edits being made to the user-space header, I figured this is a better location. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/mtdchar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 24d35ba62b84..1d981a5c1b13 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -495,7 +495,7 @@ static int shrink_ecclayout(const struct nand_ecclayout *from, memset(to, 0, sizeof(*to)); - to->eccbytes = min((int)from->eccbytes, MTD_MAX_ECCPOS_ENTRIES_OLD); + to->eccbytes = min((int)from->eccbytes, MTD_MAX_ECCPOS_ENTRIES); for (i = 0; i < to->eccbytes; i++) to->eccpos[i] = from->eccpos[i]; -- cgit v1.2.3 From 432dc821c90114f9b0e00f6752a700e937516ade Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Thu, 19 Aug 2010 18:18:21 -0700 Subject: mtd: cleanup Kconfig dependencies Remove the MTD!=n dependency since that is handled by drivers/mtd/Kconfig. Simplify the dependency checks for mtd/chips by using if/endif blocks. Remove all default n since that is the Kconfig default. Signed-off-by: H Hartley Sweeten Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/chips/Kconfig | 46 ++++++++++++++++++++++------------------------ 1 file changed, 22 insertions(+), 24 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/chips/Kconfig b/drivers/mtd/chips/Kconfig index 35c6a23b183b..baac35339172 100644 --- a/drivers/mtd/chips/Kconfig +++ b/drivers/mtd/chips/Kconfig @@ -1,5 +1,4 @@ menu "RAM/ROM/Flash chip drivers" - depends on MTD!=n config MTD_CFI tristate "Detect flash chips by Common Flash Interface (CFI) probe" @@ -27,9 +26,10 @@ config MTD_JEDECPROBE config MTD_GEN_PROBE tristate +if MTD_GEN_PROBE + config MTD_CFI_ADV_OPTIONS bool "Flash chip driver advanced configuration options" - depends on MTD_GEN_PROBE help If you need to specify a specific endianness for access to flash chips, or if you wish to reduce the size of the kernel by including @@ -39,9 +39,10 @@ config MTD_CFI_ADV_OPTIONS If unsure, say 'N'. +if MTD_CFI_ADV_OPTIONS + choice prompt "Flash cmd/query data swapping" - depends on MTD_CFI_ADV_OPTIONS default MTD_CFI_NOSWAP config MTD_CFI_NOSWAP @@ -72,7 +73,6 @@ endchoice config MTD_CFI_GEOMETRY bool "Specific CFI Flash geometry selection" - depends on MTD_CFI_ADV_OPTIONS help This option does not affect the code directly, but will enable some other configuration options which would allow you to reduce @@ -80,81 +80,78 @@ config MTD_CFI_GEOMETRY arrangements of CFI chips. If unsure, say 'N' and all options which are supported by the current code will be enabled. +if MTD_CFI_GEOMETRY + config MTD_MAP_BANK_WIDTH_1 - bool "Support 8-bit buswidth" if MTD_CFI_GEOMETRY + bool "Support 8-bit buswidth" default y help If you wish to support CFI devices on a physical bus which is 8 bits wide, say 'Y'. config MTD_MAP_BANK_WIDTH_2 - bool "Support 16-bit buswidth" if MTD_CFI_GEOMETRY + bool "Support 16-bit buswidth" default y help If you wish to support CFI devices on a physical bus which is 16 bits wide, say 'Y'. config MTD_MAP_BANK_WIDTH_4 - bool "Support 32-bit buswidth" if MTD_CFI_GEOMETRY + bool "Support 32-bit buswidth" default y help If you wish to support CFI devices on a physical bus which is 32 bits wide, say 'Y'. config MTD_MAP_BANK_WIDTH_8 - bool "Support 64-bit buswidth" if MTD_CFI_GEOMETRY - default n + bool "Support 64-bit buswidth" help If you wish to support CFI devices on a physical bus which is 64 bits wide, say 'Y'. config MTD_MAP_BANK_WIDTH_16 - bool "Support 128-bit buswidth" if MTD_CFI_GEOMETRY - default n + bool "Support 128-bit buswidth" help If you wish to support CFI devices on a physical bus which is 128 bits wide, say 'Y'. config MTD_MAP_BANK_WIDTH_32 - bool "Support 256-bit buswidth" if MTD_CFI_GEOMETRY - default n + bool "Support 256-bit buswidth" help If you wish to support CFI devices on a physical bus which is 256 bits wide, say 'Y'. config MTD_CFI_I1 - bool "Support 1-chip flash interleave" if MTD_CFI_GEOMETRY + bool "Support 1-chip flash interleave" default y help If your flash chips are not interleaved - i.e. you only have one flash chip addressed by each bus cycle, then say 'Y'. config MTD_CFI_I2 - bool "Support 2-chip flash interleave" if MTD_CFI_GEOMETRY + bool "Support 2-chip flash interleave" default y help If your flash chips are interleaved in pairs - i.e. you have two flash chips addressed by each bus cycle, then say 'Y'. config MTD_CFI_I4 - bool "Support 4-chip flash interleave" if MTD_CFI_GEOMETRY - default n + bool "Support 4-chip flash interleave" help If your flash chips are interleaved in fours - i.e. you have four flash chips addressed by each bus cycle, then say 'Y'. config MTD_CFI_I8 - bool "Support 8-chip flash interleave" if MTD_CFI_GEOMETRY - default n + bool "Support 8-chip flash interleave" help If your flash chips are interleaved in eights - i.e. you have eight flash chips addressed by each bus cycle, then say 'Y'. +endif # MTD_CFI_GEOMETRY + config MTD_OTP bool "Protection Registers aka one-time programmable (OTP) bits" - depends on MTD_CFI_ADV_OPTIONS select HAVE_MTD_OTP - default n help This enables support for reading, writing and locking so called "Protection Registers" present on some flash chips. @@ -176,9 +173,10 @@ config MTD_OTP This feature should therefore be used with extreme care. Any mistake in the programming of OTP bits will waste them. +endif # MTD_CFI_ADV_OPTIONS + config MTD_CFI_INTELEXT tristate "Support for Intel/Sharp flash chips" - depends on MTD_GEN_PROBE select MTD_CFI_UTIL help The Common Flash Interface defines a number of different command @@ -188,7 +186,6 @@ config MTD_CFI_INTELEXT config MTD_CFI_AMDSTD tristate "Support for AMD/Fujitsu/Spansion flash chips" - depends on MTD_GEN_PROBE select MTD_CFI_UTIL help The Common Flash Interface defines a number of different command @@ -198,13 +195,14 @@ config MTD_CFI_AMDSTD config MTD_CFI_STAA tristate "Support for ST (Advanced Architecture) flash chips" - depends on MTD_GEN_PROBE select MTD_CFI_UTIL help The Common Flash Interface defines a number of different command sets which a CFI-compliant chip may claim to implement. This code provides support for one of those command sets. +endif # MTD_GEN_PROBE + config MTD_CFI_UTIL tristate -- cgit v1.2.3 From 13ed7aed45e370f30a746e49e674144297a92e16 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Fri, 20 Aug 2010 12:36:12 -0700 Subject: mtd: nand: support new Toshiba SLC Toshiba does not use ONFI for their NAND flash. So we have to continue to add new IDs used by Toshiba devices as well as heuristic detection for scanning the 2nd page for a BBM. This is a relatively harmless start at supporting many of them. These chips mostly follow the same ID fields of previous generations, but there is a need for a tweak. These chips introduce a strange 576 byte OOB (that's 36 bytes per 512 bytes of page). In the preliminary data, Toshiba has not defined exactly how their ID strings should decode. In the future, a new tweak must be added. Data is taken from, among others, Toshiba TC58TxG4S2FBAxx Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 5 +++-- drivers/mtd/nand/nand_ids.c | 31 +++++++++++++++++++++++++++++++ 2 files changed, 34 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index b0f091aca097..1ae953c4eccc 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2972,8 +2972,8 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, * Bad block marker is stored in the last page of each block * on Samsung and Hynix MLC devices; stored in first two pages * of each block on Micron devices with 2KiB pages and on - * SLC Samsung, Hynix, and AMD/Spansion. All others scan only - * the first page. + * SLC Samsung, Hynix, Toshiba and AMD/Spansion. All others scan + * only the first page. */ if ((chip->cellinfo & NAND_CI_CELLTYPE_MSK) && (*maf_id == NAND_MFR_SAMSUNG || @@ -2982,6 +2982,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, else if ((!(chip->cellinfo & NAND_CI_CELLTYPE_MSK) && (*maf_id == NAND_MFR_SAMSUNG || *maf_id == NAND_MFR_HYNIX || + *maf_id == NAND_MFR_TOSHIBA || *maf_id == NAND_MFR_AMD)) || (mtd->writesize == 2048 && *maf_id == NAND_MFR_MICRON)) diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c index c65f19074bc8..00cf1b0d6053 100644 --- a/drivers/mtd/nand/nand_ids.c +++ b/drivers/mtd/nand/nand_ids.c @@ -75,9 +75,13 @@ struct nand_flash_dev nand_flash_ids[] = { /*512 Megabit */ {"NAND 64MiB 1,8V 8-bit", 0xA2, 0, 64, 0, LP_OPTIONS}, + {"NAND 64MiB 1,8V 8-bit", 0xA0, 0, 64, 0, LP_OPTIONS}, {"NAND 64MiB 3,3V 8-bit", 0xF2, 0, 64, 0, LP_OPTIONS}, + {"NAND 64MiB 3,3V 8-bit", 0xD0, 0, 64, 0, LP_OPTIONS}, {"NAND 64MiB 1,8V 16-bit", 0xB2, 0, 64, 0, LP_OPTIONS16}, + {"NAND 64MiB 1,8V 16-bit", 0xB0, 0, 64, 0, LP_OPTIONS16}, {"NAND 64MiB 3,3V 16-bit", 0xC2, 0, 64, 0, LP_OPTIONS16}, + {"NAND 64MiB 3,3V 16-bit", 0xC0, 0, 64, 0, LP_OPTIONS16}, /* 1 Gigabit */ {"NAND 128MiB 1,8V 8-bit", 0xA1, 0, 128, 0, LP_OPTIONS}, @@ -112,7 +116,34 @@ struct nand_flash_dev nand_flash_ids[] = { {"NAND 2GiB 3,3V 16-bit", 0xC5, 0, 2048, 0, LP_OPTIONS16}, /* 32 Gigabit */ + {"NAND 4GiB 1,8V 8-bit", 0xA7, 0, 4096, 0, LP_OPTIONS}, {"NAND 4GiB 3,3V 8-bit", 0xD7, 0, 4096, 0, LP_OPTIONS}, + {"NAND 4GiB 1,8V 16-bit", 0xB7, 0, 4096, 0, LP_OPTIONS16}, + {"NAND 4GiB 3,3V 16-bit", 0xC7, 0, 4096, 0, LP_OPTIONS16}, + + /* 64 Gigabit */ + {"NAND 8GiB 1,8V 8-bit", 0xAE, 0, 8192, 0, LP_OPTIONS}, + {"NAND 8GiB 3,3V 8-bit", 0xDE, 0, 8192, 0, LP_OPTIONS}, + {"NAND 8GiB 1,8V 16-bit", 0xBE, 0, 8192, 0, LP_OPTIONS16}, + {"NAND 8GiB 3,3V 16-bit", 0xCE, 0, 8192, 0, LP_OPTIONS16}, + + /* 128 Gigabit */ + {"NAND 16GiB 1,8V 8-bit", 0x1A, 0, 16384, 0, LP_OPTIONS}, + {"NAND 16GiB 3,3V 8-bit", 0x3A, 0, 16384, 0, LP_OPTIONS}, + {"NAND 16GiB 1,8V 16-bit", 0x2A, 0, 16384, 0, LP_OPTIONS16}, + {"NAND 16GiB 3,3V 16-bit", 0x4A, 0, 16384, 0, LP_OPTIONS16}, + + /* 256 Gigabit */ + {"NAND 32GiB 1,8V 8-bit", 0x1C, 0, 32768, 0, LP_OPTIONS}, + {"NAND 32GiB 3,3V 8-bit", 0x3C, 0, 32768, 0, LP_OPTIONS}, + {"NAND 32GiB 1,8V 16-bit", 0x2C, 0, 32768, 0, LP_OPTIONS16}, + {"NAND 32GiB 3,3V 16-bit", 0x4C, 0, 32768, 0, LP_OPTIONS16}, + + /* 512 Gigabit */ + {"NAND 64GiB 1,8V 8-bit", 0x1E, 0, 65536, 0, LP_OPTIONS}, + {"NAND 64GiB 3,3V 8-bit", 0x3E, 0, 65536, 0, LP_OPTIONS}, + {"NAND 64GiB 1,8V 16-bit", 0x2E, 0, 65536, 0, LP_OPTIONS16}, + {"NAND 64GiB 3,3V 16-bit", 0x4E, 0, 65536, 0, LP_OPTIONS16}, /* * Renesas AND 1 Gigabit. Those chips do not support extended id and -- cgit v1.2.3 From c1f82478c535f1de9fecf3cafa82014f312d5d4e Mon Sep 17 00:00:00 2001 From: Lei Wen Date: Tue, 17 Aug 2010 13:50:23 +0800 Subject: mtd: pxa3xx_nand: condense the flash definition Adding a new flash definition would need less code. Keep the platform passing flash definition method. If one flash is both defined in platform data and builtin table, driver would select the one from platform data first. By this way, platform could select the timing most suit for itself, not need to follow the common settings. Signed-off-by: Lei Wen Signed-off-by: Haojian Zhuang Acked-by: Eric Miao Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/Kconfig | 7 -- drivers/mtd/nand/pxa3xx_nand.c | 172 ++++------------------------------------- 2 files changed, 16 insertions(+), 163 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 8b4b67c8a391..a6f22f5bbef6 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -400,13 +400,6 @@ config MTD_NAND_PXA3xx This enables the driver for the NAND flash device found on PXA3xx processors -config MTD_NAND_PXA3xx_BUILTIN - bool "Use builtin definitions for some NAND chips (deprecated)" - depends on MTD_NAND_PXA3xx - help - This enables builtin definitions for some NAND chips. This - is deprecated in favor of platform specific data. - config MTD_NAND_CM_X270 tristate "Support for NAND Flash on CM-X270 modules" depends on MACH_ARMCORE diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 4d01cda68844..4e40de45f4be 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -176,21 +176,7 @@ MODULE_PARM_DESC(use_dma, "enable DMA for data transfering to/from NAND HW"); */ static struct pxa3xx_nand_timing default_timing; static struct pxa3xx_nand_flash default_flash; - -static struct pxa3xx_nand_cmdset smallpage_cmdset = { - .read1 = 0x0000, - .read2 = 0x0050, - .program = 0x1080, - .read_status = 0x0070, - .read_id = 0x0090, - .erase = 0xD060, - .reset = 0x00FF, - .lock = 0x002A, - .unlock = 0x2423, - .lock_status = 0x007A, -}; - -static struct pxa3xx_nand_cmdset largepage_cmdset = { +static struct pxa3xx_nand_cmdset default_cmdset = { .read1 = 0x3000, .read2 = 0x0050, .program = 0x1080, @@ -203,143 +189,23 @@ static struct pxa3xx_nand_cmdset largepage_cmdset = { .lock_status = 0x007A, }; -#ifdef CONFIG_MTD_NAND_PXA3xx_BUILTIN -static struct pxa3xx_nand_timing samsung512MbX16_timing = { - .tCH = 10, - .tCS = 0, - .tWH = 20, - .tWP = 40, - .tRH = 30, - .tRP = 40, - .tR = 11123, - .tWHR = 110, - .tAR = 10, -}; - -static struct pxa3xx_nand_flash samsung512MbX16 = { - .timing = &samsung512MbX16_timing, - .cmdset = &smallpage_cmdset, - .page_per_block = 32, - .page_size = 512, - .flash_width = 16, - .dfc_width = 16, - .num_blocks = 4096, - .chip_id = 0x46ec, -}; - -static struct pxa3xx_nand_flash samsung2GbX8 = { - .timing = &samsung512MbX16_timing, - .cmdset = &smallpage_cmdset, - .page_per_block = 64, - .page_size = 2048, - .flash_width = 8, - .dfc_width = 8, - .num_blocks = 2048, - .chip_id = 0xdaec, -}; - -static struct pxa3xx_nand_flash samsung32GbX8 = { - .timing = &samsung512MbX16_timing, - .cmdset = &smallpage_cmdset, - .page_per_block = 128, - .page_size = 4096, - .flash_width = 8, - .dfc_width = 8, - .num_blocks = 8192, - .chip_id = 0xd7ec, +static struct pxa3xx_nand_timing timing[] = { + { 10, 0, 20, 40, 30, 40, 11123, 110, 10, }, + { 10, 25, 15, 25, 15, 30, 25000, 60, 10, }, + { 10, 35, 15, 25, 15, 25, 25000, 60, 10, }, }; -static struct pxa3xx_nand_timing micron_timing = { - .tCH = 10, - .tCS = 25, - .tWH = 15, - .tWP = 25, - .tRH = 15, - .tRP = 30, - .tR = 25000, - .tWHR = 60, - .tAR = 10, +static struct pxa3xx_nand_flash builtin_flash_types[] = { + { 0x46ec, 32, 512, 16, 16, 4096, &default_cmdset, &timing[0] }, + { 0xdaec, 64, 2048, 8, 8, 2048, &default_cmdset, &timing[0] }, + { 0xd7ec, 128, 4096, 8, 8, 8192, &default_cmdset, &timing[0] }, + { 0xa12c, 64, 2048, 8, 8, 1024, &default_cmdset, &timing[1] }, + { 0xb12c, 64, 2048, 16, 16, 1024, &default_cmdset, &timing[1] }, + { 0xdc2c, 64, 2048, 8, 8, 4096, &default_cmdset, &timing[1] }, + { 0xcc2c, 64, 2048, 16, 16, 4096, &default_cmdset, &timing[1] }, + { 0xba20, 64, 2048, 16, 16, 2048, &default_cmdset, &timing[2] }, }; -static struct pxa3xx_nand_flash micron1GbX8 = { - .timing = µn_timing, - .cmdset = &largepage_cmdset, - .page_per_block = 64, - .page_size = 2048, - .flash_width = 8, - .dfc_width = 8, - .num_blocks = 1024, - .chip_id = 0xa12c, -}; - -static struct pxa3xx_nand_flash micron1GbX16 = { - .timing = µn_timing, - .cmdset = &largepage_cmdset, - .page_per_block = 64, - .page_size = 2048, - .flash_width = 16, - .dfc_width = 16, - .num_blocks = 1024, - .chip_id = 0xb12c, -}; - -static struct pxa3xx_nand_flash micron4GbX8 = { - .timing = µn_timing, - .cmdset = &largepage_cmdset, - .page_per_block = 64, - .page_size = 2048, - .flash_width = 8, - .dfc_width = 8, - .num_blocks = 4096, - .chip_id = 0xdc2c, -}; - -static struct pxa3xx_nand_flash micron4GbX16 = { - .timing = µn_timing, - .cmdset = &largepage_cmdset, - .page_per_block = 64, - .page_size = 2048, - .flash_width = 16, - .dfc_width = 16, - .num_blocks = 4096, - .chip_id = 0xcc2c, -}; - -static struct pxa3xx_nand_timing stm2GbX16_timing = { - .tCH = 10, - .tCS = 35, - .tWH = 15, - .tWP = 25, - .tRH = 15, - .tRP = 25, - .tR = 25000, - .tWHR = 60, - .tAR = 10, -}; - -static struct pxa3xx_nand_flash stm2GbX16 = { - .timing = &stm2GbX16_timing, - .cmdset = &largepage_cmdset, - .page_per_block = 64, - .page_size = 2048, - .flash_width = 16, - .dfc_width = 16, - .num_blocks = 2048, - .chip_id = 0xba20, -}; - -static struct pxa3xx_nand_flash *builtin_flash_types[] = { - &samsung512MbX16, - &samsung2GbX8, - &samsung32GbX8, - µn1GbX8, - µn1GbX16, - µn4GbX8, - µn4GbX16, - &stm2GbX16, -}; -#endif /* CONFIG_MTD_NAND_PXA3xx_BUILTIN */ - #define NDTR0_tCH(c) (min((c), 7) << 19) #define NDTR0_tCS(c) (min((c), 7) << 16) #define NDTR0_tWH(c) (min((c), 7) << 11) @@ -1027,11 +893,6 @@ static int pxa3xx_nand_detect_config(struct pxa3xx_nand_info *info) default_flash.flash_width = ndcr & NDCR_DWIDTH_M ? 16 : 8; default_flash.dfc_width = ndcr & NDCR_DWIDTH_C ? 16 : 8; - if (default_flash.page_size == 2048) - default_flash.cmdset = &largepage_cmdset; - else - default_flash.cmdset = &smallpage_cmdset; - /* set info fields needed to __readid */ info->flash_info = &default_flash; info->read_id_bytes = (default_flash.page_size == 2048) ? 4 : 2; @@ -1068,6 +929,7 @@ static int pxa3xx_nand_detect_config(struct pxa3xx_nand_info *info) pxa3xx_nand_detect_timing(info, &default_timing); default_flash.timing = &default_timing; + default_flash.cmdset = &default_cmdset; return 0; } @@ -1096,10 +958,9 @@ static int pxa3xx_nand_detect_flash(struct pxa3xx_nand_info *info, return 0; } -#ifdef CONFIG_MTD_NAND_PXA3xx_BUILTIN for (i = 0; i < ARRAY_SIZE(builtin_flash_types); i++) { - f = builtin_flash_types[i]; + f = &builtin_flash_types[i]; if (pxa3xx_nand_config_flash(info, f)) continue; @@ -1110,7 +971,6 @@ static int pxa3xx_nand_detect_flash(struct pxa3xx_nand_info *info, if (id == f->chip_id) return 0; } -#endif dev_warn(&info->pdev->dev, "failed to detect configured nand flash; found %04x instead of\n", -- cgit v1.2.3 From 227a886c7ead6420465abfd1242f449895b2c332 Mon Sep 17 00:00:00 2001 From: Lei Wen Date: Wed, 18 Aug 2010 18:00:03 +0800 Subject: mtd: pxa3xx_nand: introduce default timing to reduce read id times We certainly don't need to send read id command times by times, since we already know what the id is after the first read id... So create a default timing which could ensure it would successfully read id out all supported chip. Then follow the build-in table to reconfigure the timing. Signed-off-by: Lei Wen Signed-off-by: Haojian Zhuang Acked-by: Eric Miao Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/pxa3xx_nand.c | 68 ++++++++++++++++++++---------------------- 1 file changed, 33 insertions(+), 35 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 4e40de45f4be..621fa68189fd 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -190,22 +190,27 @@ static struct pxa3xx_nand_cmdset default_cmdset = { }; static struct pxa3xx_nand_timing timing[] = { - { 10, 0, 20, 40, 30, 40, 11123, 110, 10, }, - { 10, 25, 15, 25, 15, 30, 25000, 60, 10, }, - { 10, 35, 15, 25, 15, 25, 25000, 60, 10, }, + { 40, 80, 60, 100, 80, 100, 90000, 400, 40, }, + { 10, 0, 20, 40, 30, 40, 11123, 110, 10, }, + { 10, 25, 15, 25, 15, 30, 25000, 60, 10, }, + { 10, 35, 15, 25, 15, 25, 25000, 60, 10, }, }; static struct pxa3xx_nand_flash builtin_flash_types[] = { - { 0x46ec, 32, 512, 16, 16, 4096, &default_cmdset, &timing[0] }, - { 0xdaec, 64, 2048, 8, 8, 2048, &default_cmdset, &timing[0] }, - { 0xd7ec, 128, 4096, 8, 8, 8192, &default_cmdset, &timing[0] }, - { 0xa12c, 64, 2048, 8, 8, 1024, &default_cmdset, &timing[1] }, - { 0xb12c, 64, 2048, 16, 16, 1024, &default_cmdset, &timing[1] }, - { 0xdc2c, 64, 2048, 8, 8, 4096, &default_cmdset, &timing[1] }, - { 0xcc2c, 64, 2048, 16, 16, 4096, &default_cmdset, &timing[1] }, - { 0xba20, 64, 2048, 16, 16, 2048, &default_cmdset, &timing[2] }, + { 0, 0, 2048, 8, 8, 0, &default_cmdset, &timing[0] }, + { 0x46ec, 32, 512, 16, 16, 4096, &default_cmdset, &timing[1] }, + { 0xdaec, 64, 2048, 8, 8, 2048, &default_cmdset, &timing[1] }, + { 0xd7ec, 128, 4096, 8, 8, 8192, &default_cmdset, &timing[1] }, + { 0xa12c, 64, 2048, 8, 8, 1024, &default_cmdset, &timing[2] }, + { 0xb12c, 64, 2048, 16, 16, 1024, &default_cmdset, &timing[2] }, + { 0xdc2c, 64, 2048, 8, 8, 4096, &default_cmdset, &timing[2] }, + { 0xcc2c, 64, 2048, 16, 16, 4096, &default_cmdset, &timing[2] }, + { 0xba20, 64, 2048, 16, 16, 2048, &default_cmdset, &timing[3] }, }; +/* Define a default flash type setting serve as flash detecting only */ +#define DEFAULT_FLASH_TYPE (&builtin_flash_types[0]) + #define NDTR0_tCH(c) (min((c), 7) << 19) #define NDTR0_tCS(c) (min((c), 7) << 16) #define NDTR0_tWH(c) (min((c), 7) << 11) @@ -945,36 +950,29 @@ static int pxa3xx_nand_detect_flash(struct pxa3xx_nand_info *info, if (pxa3xx_nand_detect_config(info) == 0) return 0; - for (i = 0; inum_flash; ++i) { - f = pdata->flash + i; - - if (pxa3xx_nand_config_flash(info, f)) - continue; - - if (__readid(info, &id)) - continue; - - if (id == f->chip_id) - return 0; - } - - for (i = 0; i < ARRAY_SIZE(builtin_flash_types); i++) { - - f = &builtin_flash_types[i]; - - if (pxa3xx_nand_config_flash(info, f)) - continue; - - if (__readid(info, &id)) - continue; - - if (id == f->chip_id) + /* we use default timing to detect id */ + f = DEFAULT_FLASH_TYPE; + pxa3xx_nand_config_flash(info, f); + if (__readid(info, &id)) + goto fail_detect; + + for (i=0; inum_flash - 1; i++) { + /* we first choose the flash definition from platfrom */ + if (i < pdata->num_flash) + f = pdata->flash + i; + else + f = &builtin_flash_types[i - pdata->num_flash + 1]; + if (f->chip_id == id) { + dev_info(&info->pdev->dev, "detect chip id: 0x%x\n", id); + pxa3xx_nand_config_flash(info, f); return 0; + } } dev_warn(&info->pdev->dev, "failed to detect configured nand flash; found %04x instead of\n", id); +fail_detect: return -ENODEV; } -- cgit v1.2.3 From 18c81b1828f8c4bdd01dd24f4015604a17ca0bb8 Mon Sep 17 00:00:00 2001 From: Lei Wen Date: Tue, 17 Aug 2010 17:25:57 +0800 Subject: mtd: pxa3xx_nand: remove the flash info in driver structure After probe, all info already transfer to driver structure. There is no need to keep the original flash info. So that we could safely free the flash info in memory, which may grows larger when more flash is suported. Signed-off-by: Lei Wen Signed-off-by: Haojian Zhuang Acked-by: Eric Miao Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/pxa3xx_nand.c | 115 +++++++++++++++-------------------------- 1 file changed, 43 insertions(+), 72 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 621fa68189fd..cafd8e4946bc 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -117,7 +117,7 @@ struct pxa3xx_nand_info { struct nand_chip nand_chip; struct platform_device *pdev; - const struct pxa3xx_nand_flash *flash_info; + struct pxa3xx_nand_cmdset *cmdset; struct clk *clk; void __iomem *mmio_base; @@ -131,6 +131,7 @@ struct pxa3xx_nand_info { int drcmr_cmd; unsigned char *data_buff; + unsigned char *oob_buff; dma_addr_t data_buff_phys; size_t data_buff_size; int data_dma_ch; @@ -149,7 +150,8 @@ struct pxa3xx_nand_info { int use_ecc; /* use HW ECC ? */ int use_dma; /* use DMA ? */ - size_t data_size; /* data size in FIFO */ + unsigned int page_size; /* page size of attached chip */ + unsigned int data_size; /* data size in FIFO */ int retcode; struct completion cmd_complete; @@ -158,6 +160,10 @@ struct pxa3xx_nand_info { uint32_t ndcb1; uint32_t ndcb2; + /* timing calcuted from setting */ + uint32_t ndtr0cs0; + uint32_t ndtr1cs0; + /* calculated from pxa3xx_nand_flash data */ size_t oob_size; size_t read_id_bytes; @@ -174,8 +180,6 @@ MODULE_PARM_DESC(use_dma, "enable DMA for data transfering to/from NAND HW"); * Default NAND flash controller configuration setup by the * bootloader. This configuration is used only when pdata->keep_config is set */ -static struct pxa3xx_nand_timing default_timing; -static struct pxa3xx_nand_flash default_flash; static struct pxa3xx_nand_cmdset default_cmdset = { .read1 = 0x3000, .read2 = 0x0050, @@ -222,23 +226,9 @@ static struct pxa3xx_nand_flash builtin_flash_types[] = { #define NDTR1_tWHR(c) (min((c), 15) << 4) #define NDTR1_tAR(c) (min((c), 15) << 0) -#define tCH_NDTR0(r) (((r) >> 19) & 0x7) -#define tCS_NDTR0(r) (((r) >> 16) & 0x7) -#define tWH_NDTR0(r) (((r) >> 11) & 0x7) -#define tWP_NDTR0(r) (((r) >> 8) & 0x7) -#define tRH_NDTR0(r) (((r) >> 3) & 0x7) -#define tRP_NDTR0(r) (((r) >> 0) & 0x7) - -#define tR_NDTR1(r) (((r) >> 16) & 0xffff) -#define tWHR_NDTR1(r) (((r) >> 4) & 0xf) -#define tAR_NDTR1(r) (((r) >> 0) & 0xf) - /* convert nano-seconds to nand flash controller clock cycles */ #define ns2cycle(ns, clk) (int)((ns) * (clk / 1000000) / 1000) -/* convert nand flash controller clock cycles to nano-seconds */ -#define cycle2ns(c, clk) ((((c) + 1) * 1000000 + clk / 500) / (clk / 1000)) - static void pxa3xx_nand_set_timing(struct pxa3xx_nand_info *info, const struct pxa3xx_nand_timing *t) { @@ -256,6 +246,8 @@ static void pxa3xx_nand_set_timing(struct pxa3xx_nand_info *info, NDTR1_tWHR(ns2cycle(t->tWHR, nand_clk)) | NDTR1_tAR(ns2cycle(t->tAR, nand_clk)); + info->ndtr0cs0 = ndtr0; + info->ndtr1cs0 = ndtr1; nand_writel(info, NDTR0CS0, ndtr0); nand_writel(info, NDTR1CS0, ndtr1); } @@ -279,23 +271,24 @@ static int wait_for_event(struct pxa3xx_nand_info *info, uint32_t event) return -ETIMEDOUT; } -static int prepare_read_prog_cmd(struct pxa3xx_nand_info *info, - uint16_t cmd, int column, int page_addr) +static void pxa3xx_set_datasize(struct pxa3xx_nand_info *info) { - const struct pxa3xx_nand_flash *f = info->flash_info; - const struct pxa3xx_nand_cmdset *cmdset = f->cmdset; - /* calculate data size */ - switch (f->page_size) { + switch (info->page_size) { case 2048: info->data_size = (info->use_ecc) ? 2088 : 2112; break; case 512: info->data_size = (info->use_ecc) ? 520 : 528; break; - default: - return -EINVAL; } +} + +static int prepare_read_prog_cmd(struct pxa3xx_nand_info *info, + uint16_t cmd, int column, int page_addr) +{ + const struct pxa3xx_nand_cmdset *cmdset = info->cmdset; + pxa3xx_set_datasize(info); /* generate values for NDCBx registers */ info->ndcb0 = cmd | ((cmd & 0xff00) ? NDCB0_DBC : 0); @@ -334,7 +327,7 @@ static int prepare_erase_cmd(struct pxa3xx_nand_info *info, static int prepare_other_cmd(struct pxa3xx_nand_info *info, uint16_t cmd) { - const struct pxa3xx_nand_cmdset *cmdset = info->flash_info->cmdset; + const struct pxa3xx_nand_cmdset *cmdset = info->cmdset; info->ndcb0 = cmd | ((cmd & 0xff00) ? NDCB0_DBC : 0); info->ndcb1 = 0; @@ -571,8 +564,7 @@ static void pxa3xx_nand_cmdfunc(struct mtd_info *mtd, unsigned command, int column, int page_addr) { struct pxa3xx_nand_info *info = mtd->priv; - const struct pxa3xx_nand_flash *flash_info = info->flash_info; - const struct pxa3xx_nand_cmdset *cmdset = flash_info->cmdset; + const struct pxa3xx_nand_cmdset *cmdset = info->cmdset; int ret; info->use_dma = (use_dma) ? 1 : 0; @@ -796,8 +788,7 @@ static int pxa3xx_nand_ecc_correct(struct mtd_info *mtd, static int __readid(struct pxa3xx_nand_info *info, uint32_t *id) { - const struct pxa3xx_nand_flash *f = info->flash_info; - const struct pxa3xx_nand_cmdset *cmdset = f->cmdset; + const struct pxa3xx_nand_cmdset *cmdset = info->cmdset; uint32_t ndcr; uint8_t id_buff[8]; @@ -839,6 +830,9 @@ static int pxa3xx_nand_config_flash(struct pxa3xx_nand_info *info, return -EINVAL; /* calculate flash information */ + info->cmdset = f->cmdset; + info->page_size = f->page_size; + info->oob_buff = info->data_buff + f->page_size; info->oob_size = (f->page_size == 2048) ? 64 : 16; info->read_id_bytes = (f->page_size == 2048) ? 4 : 2; @@ -863,44 +857,20 @@ static int pxa3xx_nand_config_flash(struct pxa3xx_nand_info *info, info->reg_ndcr = ndcr; pxa3xx_nand_set_timing(info, f->timing); - info->flash_info = f; return 0; } -static void pxa3xx_nand_detect_timing(struct pxa3xx_nand_info *info, - struct pxa3xx_nand_timing *t) -{ - unsigned long nand_clk = clk_get_rate(info->clk); - uint32_t ndtr0 = nand_readl(info, NDTR0CS0); - uint32_t ndtr1 = nand_readl(info, NDTR1CS0); - - t->tCH = cycle2ns(tCH_NDTR0(ndtr0), nand_clk); - t->tCS = cycle2ns(tCS_NDTR0(ndtr0), nand_clk); - t->tWH = cycle2ns(tWH_NDTR0(ndtr0), nand_clk); - t->tWP = cycle2ns(tWP_NDTR0(ndtr0), nand_clk); - t->tRH = cycle2ns(tRH_NDTR0(ndtr0), nand_clk); - t->tRP = cycle2ns(tRP_NDTR0(ndtr0), nand_clk); - - t->tR = cycle2ns(tR_NDTR1(ndtr1), nand_clk); - t->tWHR = cycle2ns(tWHR_NDTR1(ndtr1), nand_clk); - t->tAR = cycle2ns(tAR_NDTR1(ndtr1), nand_clk); -} - static int pxa3xx_nand_detect_config(struct pxa3xx_nand_info *info) { uint32_t ndcr = nand_readl(info, NDCR); struct nand_flash_dev *type = NULL; - uint32_t id = -1; + uint32_t id = -1, page_per_block, num_blocks; int i; - default_flash.page_per_block = ndcr & NDCR_PG_PER_BLK ? 64 : 32; - default_flash.page_size = ndcr & NDCR_PAGE_SZ ? 2048 : 512; - default_flash.flash_width = ndcr & NDCR_DWIDTH_M ? 16 : 8; - default_flash.dfc_width = ndcr & NDCR_DWIDTH_C ? 16 : 8; - + page_per_block = ndcr & NDCR_PG_PER_BLK ? 64 : 32; + info->page_size = ndcr & NDCR_PAGE_SZ ? 2048 : 512; /* set info fields needed to __readid */ - info->flash_info = &default_flash; - info->read_id_bytes = (default_flash.page_size == 2048) ? 4 : 2; + info->read_id_bytes = (info->page_size == 2048) ? 4 : 2; info->reg_ndcr = ndcr; if (__readid(info, &id)) @@ -919,22 +889,22 @@ static int pxa3xx_nand_detect_config(struct pxa3xx_nand_info *info) return -ENODEV; /* fill the missing flash information */ - i = __ffs(default_flash.page_per_block * default_flash.page_size); - default_flash.num_blocks = type->chipsize << (20 - i); + i = __ffs(page_per_block * info->page_size); + num_blocks = type->chipsize << (20 - i); - info->oob_size = (default_flash.page_size == 2048) ? 64 : 16; + info->oob_size = (info->page_size == 2048) ? 64 : 16; /* calculate addressing information */ - info->col_addr_cycles = (default_flash.page_size == 2048) ? 2 : 1; + info->col_addr_cycles = (info->page_size == 2048) ? 2 : 1; - if (default_flash.num_blocks * default_flash.page_per_block > 65536) + if (num_blocks * page_per_block > 65536) info->row_addr_cycles = 3; else info->row_addr_cycles = 2; - pxa3xx_nand_detect_timing(info, &default_timing); - default_flash.timing = &default_timing; - default_flash.cmdset = &default_cmdset; + info->ndtr0cs0 = nand_readl(info, NDTR0CS0); + info->ndtr1cs0 = nand_readl(info, NDTR1CS0); + info->cmdset = &default_cmdset; return 0; } @@ -1035,10 +1005,9 @@ static struct nand_ecclayout hw_largepage_ecclayout = { static void pxa3xx_nand_init_mtd(struct mtd_info *mtd, struct pxa3xx_nand_info *info) { - const struct pxa3xx_nand_flash *f = info->flash_info; struct nand_chip *this = &info->nand_chip; - this->options = (f->flash_width == 16) ? NAND_BUSWIDTH_16: 0; + this->options = (info->reg_ndcr & NDCR_DWIDTH_C) ? NAND_BUSWIDTH_16: 0; this->waitfunc = pxa3xx_nand_waitfunc; this->select_chip = pxa3xx_nand_select_chip; @@ -1054,9 +1023,9 @@ static void pxa3xx_nand_init_mtd(struct mtd_info *mtd, this->ecc.hwctl = pxa3xx_nand_ecc_hwctl; this->ecc.calculate = pxa3xx_nand_ecc_calculate; this->ecc.correct = pxa3xx_nand_ecc_correct; - this->ecc.size = f->page_size; + this->ecc.size = info->page_size; - if (f->page_size == 2048) + if (info->page_size == 2048) this->ecc.layout = &hw_largepage_ecclayout; else this->ecc.layout = &hw_smallpage_ecclayout; @@ -1269,9 +1238,11 @@ static int pxa3xx_nand_resume(struct platform_device *pdev) struct mtd_info *mtd = (struct mtd_info *)platform_get_drvdata(pdev); struct pxa3xx_nand_info *info = mtd->priv; + nand_writel(info, NDTR0CS0, info->ndtr0cs0); + nand_writel(info, NDTR1CS0, info->ndtr1cs0); clk_enable(info->clk); - return pxa3xx_nand_config_flash(info, info->flash_info); + return 0; } #else #define pxa3xx_nand_suspend NULL -- cgit v1.2.3 From 9d8b10437441e7f31ce86202ccadad922a9e914f Mon Sep 17 00:00:00 2001 From: Lei Wen Date: Tue, 17 Aug 2010 14:09:30 +0800 Subject: mtd: pxa3xx_nand: set oob length in the runtime For different command need different oob requirement, set the proper oob length by different cmd. Signed-off-by: Lei Wen Acked-by: Eric Miao Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/pxa3xx_nand.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index cafd8e4946bc..17f8518cc5eb 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -273,13 +273,20 @@ static int wait_for_event(struct pxa3xx_nand_info *info, uint32_t event) static void pxa3xx_set_datasize(struct pxa3xx_nand_info *info) { - /* calculate data size */ + int oob_enable = info->reg_ndcr & NDCR_SPARE_EN; + + info->data_size = info->page_size; + if (!oob_enable) { + info->oob_size = 0; + return; + } + switch (info->page_size) { case 2048: - info->data_size = (info->use_ecc) ? 2088 : 2112; + info->oob_size = (info->use_ecc) ? 40 : 64; break; case 512: - info->data_size = (info->use_ecc) ? 520 : 528; + info->oob_size = (info->use_ecc) ? 8 : 16; break; } } @@ -333,6 +340,7 @@ static int prepare_other_cmd(struct pxa3xx_nand_info *info, uint16_t cmd) info->ndcb1 = 0; info->ndcb2 = 0; + info->oob_size = 0; if (cmd == cmdset->read_id) { info->ndcb0 |= NDCB0_CMD_TYPE(3); info->data_size = 8; @@ -401,6 +409,9 @@ static int handle_data_pio(struct pxa3xx_nand_info *info) case STATE_PIO_WRITING: __raw_writesl(info->mmio_base + NDDB, info->data_buff, DIV_ROUND_UP(info->data_size, 4)); + if (info->oob_size > 0) + __raw_writesl(info->mmio_base + NDDB, info->oob_buff, + DIV_ROUND_UP(info->oob_size, 4)); enable_int(info, NDSR_CS0_BBD | NDSR_CS0_CMDD); @@ -413,6 +424,9 @@ static int handle_data_pio(struct pxa3xx_nand_info *info) case STATE_PIO_READING: __raw_readsl(info->mmio_base + NDDB, info->data_buff, DIV_ROUND_UP(info->data_size, 4)); + if (info->oob_size > 0) + __raw_readsl(info->mmio_base + NDDB, info->oob_buff, + DIV_ROUND_UP(info->oob_size, 4)); break; default: printk(KERN_ERR "%s: invalid state %d\n", __func__, @@ -427,7 +441,7 @@ static int handle_data_pio(struct pxa3xx_nand_info *info) static void start_data_dma(struct pxa3xx_nand_info *info, int dir_out) { struct pxa_dma_desc *desc = info->data_desc; - int dma_len = ALIGN(info->data_size, 32); + int dma_len = ALIGN(info->data_size + info->oob_size, 32); desc->ddadr = DDADR_STOP; desc->dcmd = DCMD_ENDIRQEN | DCMD_WIDTH4 | DCMD_BURST32 | dma_len; @@ -833,7 +847,6 @@ static int pxa3xx_nand_config_flash(struct pxa3xx_nand_info *info, info->cmdset = f->cmdset; info->page_size = f->page_size; info->oob_buff = info->data_buff + f->page_size; - info->oob_size = (f->page_size == 2048) ? 64 : 16; info->read_id_bytes = (f->page_size == 2048) ? 4 : 2; /* calculate addressing information */ @@ -892,8 +905,6 @@ static int pxa3xx_nand_detect_config(struct pxa3xx_nand_info *info) i = __ffs(page_per_block * info->page_size); num_blocks = type->chipsize << (20 - i); - info->oob_size = (info->page_size == 2048) ? 64 : 16; - /* calculate addressing information */ info->col_addr_cycles = (info->page_size == 2048) ? 2 : 1; -- cgit v1.2.3 From cf363518ca44d654c51497b3f73c69a34565155d Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sun, 29 Aug 2010 11:52:42 +0200 Subject: mtd: mpc5121_nfc: fix memory leak on error path Add a call to of_node_put in the error handling code following a call to of_find_compatible_node. Signed-off-by: Julia Lawall Acked-by: Wolfram Sang Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/mpc5121_nfc.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c index df0c1da4ff49..f4610bc7ccd0 100644 --- a/drivers/mtd/nand/mpc5121_nfc.c +++ b/drivers/mtd/nand/mpc5121_nfc.c @@ -568,6 +568,7 @@ static int mpc5121_nfc_read_hw_config(struct mtd_info *mtd) uint rcw_width; uint rcwh; uint romloc, ps; + int ret = 0; rmnode = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-reset"); if (!rmnode) { @@ -579,7 +580,8 @@ static int mpc5121_nfc_read_hw_config(struct mtd_info *mtd) rm = of_iomap(rmnode, 0); if (!rm) { dev_err(prv->dev, "Error mapping reset module node!\n"); - return -EBUSY; + ret = -EBUSY; + goto out; } rcwh = in_be32(&rm->rcwhr); @@ -628,8 +630,9 @@ static int mpc5121_nfc_read_hw_config(struct mtd_info *mtd) rcw_width * 8, rcw_pagesize, rcw_sparesize); iounmap(rm); +out: of_node_put(rmnode); - return 0; + return ret; } /* Free driver resources */ -- cgit v1.2.3 From a41ccf5a3e22c3dc1e7be134afdaa97e1aed01e2 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 24 Aug 2010 13:56:27 +0200 Subject: mtd: pcmciamtd: remove dead code This code isn't reachable. I looked through the git history and it hasn't been reachable for years. Someone removed the label to silence gcc's unused label warning but these few lines accidentally got left behind. Signed-off-by: Dan Carpenter Acked-by: Dominik Brodowski Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/maps/pcmciamtd.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c index e9ca5ba7d9d2..86c74685eb7b 100644 --- a/drivers/mtd/maps/pcmciamtd.c +++ b/drivers/mtd/maps/pcmciamtd.c @@ -654,10 +654,6 @@ static int pcmciamtd_config(struct pcmcia_device *link) } dev_info(&dev->p_dev->dev, "mtd%d: %s\n", mtd->index, mtd->name); return 0; - - dev_err(&dev->p_dev->dev, "CS Error, exiting\n"); - pcmciamtd_release(link); - return -ENODEV; } -- cgit v1.2.3 From eea116ed0497dc9c4a981b8c7017d758fc835ded Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Wed, 25 Aug 2010 14:18:20 +0200 Subject: mtd: davinci: fix comment to match the code Signed-off-by: Wolfram Sang Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/davinci_nand.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index 70698e86e437..e7129591c9c7 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -369,8 +369,9 @@ compare: * after setting the 4BITECC_ADD_CALC_START bit. So if you immediately * begin trying to poll for the state, you may fall right out of your * loop without any of the correction calculations having taken place. - * The recommendation from the hardware team is to wait till ECC_STATE - * reads less than 4, which means ECC HW has entered correction state. + * The recommendation from the hardware team is to initially delay as + * long as ECC_STATE reads less than 4. After that, ECC HW has entered + * correction state. */ do { ecc_state = (davinci_nand_readl(info, -- cgit v1.2.3 From 34c5bf6cc78e56537e0d508f5979f27ea8a64e31 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Fri, 20 Aug 2010 10:50:43 -0700 Subject: mtd: nand: Samsung MLC - new OOB sizes There are some additions to the detection scheme used by Samsung MLC NAND. These simple changes to support the 400- and 436-byte OOB are found in the following data sheet: Samsung K9GBG08U0M (p.40) Signed-off-by: Brian Norris Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 1ae953c4eccc..596ac848b46d 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2859,7 +2859,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, /* * Field definitions are in the following datasheets: * Old style (4,5 byte ID): Samsung K9GAG08U0M (p.32) - * New style (6 byte ID): Samsung K9GAG08U0D (p.40) + * New style (6 byte ID): Samsung K9GBG08U0M (p.40) * * Check for wraparound + Samsung ID + nonzero 6th byte * to decide what to do. @@ -2872,7 +2872,20 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, mtd->writesize = 2048 << (extid & 0x03); extid >>= 2; /* Calc oobsize */ - mtd->oobsize = (extid & 0x03) == 0x01 ? 128 : 218; + switch (extid & 0x03) { + case 1: + mtd->oobsize = 128; + break; + case 2: + mtd->oobsize = 218; + break; + case 3: + mtd->oobsize = 400; + break; + default: + mtd->oobsize = 436; + break; + } extid >>= 2; /* Calc blocksize */ mtd->erasesize = (128 * 1024) << -- cgit v1.2.3 From 344955fb9cab0ec051f27e846008362b8ce42d36 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Fri, 27 Aug 2010 11:55:29 +0900 Subject: mtd: OneNAND: Remove unused cmd_map at s5pc110 S5PC110 OneNAND controller use the generic functions provided from onenand_base. Signed-off-by: Kyungmin Park Signed-off-by: David Woodhouse --- drivers/mtd/onenand/samsung.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/onenand/samsung.c b/drivers/mtd/onenand/samsung.c index a460f1b748c2..7913a921b08b 100644 --- a/drivers/mtd/onenand/samsung.c +++ b/drivers/mtd/onenand/samsung.c @@ -759,7 +759,6 @@ static void s3c_onenand_setup(struct mtd_info *mtd) onenand->cmd_map = s5pc1xx_cmd_map; } else if (onenand->type == TYPE_S5PC110) { /* Use generic onenand functions */ - onenand->cmd_map = s5pc1xx_cmd_map; this->read_bufferram = s5pc110_read_bufferram; this->chip_probe = s5pc110_chip_probe; return; -- cgit v1.2.3 From 42af8b58fb5ec97214e85780db71bb9d60541fcc Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 30 Aug 2010 18:32:20 +0200 Subject: mtd: nand: denali should also handle NAND_CMD_PARAM Signed-off-by: Florian Fainelli Signed-off-by: David Woodhouse --- drivers/mtd/nand/denali.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c index 532fe07cf886..8c8d3c86c0e8 100644 --- a/drivers/mtd/nand/denali.c +++ b/drivers/mtd/nand/denali.c @@ -1292,6 +1292,7 @@ static void denali_cmdfunc(struct mtd_info *mtd, unsigned int cmd, int col, read_status(denali); break; case NAND_CMD_READID: + case NAND_CMD_PARAM: reset_buf(denali); /*sometimes ManufactureId read from register is not right * e.g. some of Micron MT29F32G08QAA MLC NAND chips -- cgit v1.2.3 From d1e1f4e42b5df063712ca2926e50c07b95c96b96 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 30 Aug 2010 18:32:24 +0200 Subject: mtd: nand: add support for reading ONFI parameters from NAND device This patch adds support for reading NAND device ONFI parameters and use the ONFI informations to define its geometry. In case the device supports ONFI, the onfi_version field in struct nand_chip contains the version (BCD) and the onfi_params structure can be used by drivers to set up timings and such. We currently only support ONFI 1.0 parameters. Signed-off-by: Brian Norris Signed-off-by: Matthieu Castet Signed-off-by: Maxime Bizon Signed-off-by: Florian Fainelli Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 164 +++++++++++++++++++++++++++++++++++-------- 1 file changed, 134 insertions(+), 30 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 596ac848b46d..5b26fffc3534 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2786,15 +2786,47 @@ static void nand_set_defaults(struct nand_chip *chip, int busw) } +/* + * sanitize ONFI strings so we can safely print them + */ +static void sanitize_string(uint8_t *s, size_t len) +{ + ssize_t i; + + /* null terminate */ + s[len - 1] = 0; + + /* remove non printable chars */ + for (i = 0; i < len - 1; i++) { + if (s[i] < ' ' || s[i] > 127) + s[i] = '?'; + } + + /* remove trailing spaces */ + strim(s); +} + +static u16 onfi_crc16(u16 crc, u8 const *p, size_t len) +{ + int i; + while (len--) { + crc ^= *p++ << 8; + for (i = 0; i < 8; i++) + crc = (crc << 1) ^ ((crc & 0x8000) ? 0x8005 : 0); + } + + return crc; +} + /* * Get the flash and manufacturer id and lookup if the type is supported */ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, struct nand_chip *chip, - int busw, int *maf_id, + int busw, int *maf_id, int *dev_id, struct nand_flash_dev *type) { - int i, dev_id, maf_idx; + int i, maf_idx; u8 id_data[8]; /* Select the device */ @@ -2811,7 +2843,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, /* Read manufacturer and device IDs */ *maf_id = chip->read_byte(mtd); - dev_id = chip->read_byte(mtd); + *dev_id = chip->read_byte(mtd); /* Try again to make sure, as some systems the bus-hold or other * interface concerns can cause random data which looks like a @@ -2821,15 +2853,13 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1); - /* Read entire ID string */ - - for (i = 0; i < 8; i++) + for (i = 0; i < 2; i++) id_data[i] = chip->read_byte(mtd); - if (id_data[0] != *maf_id || id_data[1] != dev_id) { + if (id_data[0] != *maf_id || id_data[1] != *dev_id) { printk(KERN_INFO "%s: second ID read did not match " "%02x,%02x against %02x,%02x\n", __func__, - *maf_id, dev_id, id_data[0], id_data[1]); + *maf_id, *dev_id, id_data[0], id_data[1]); return ERR_PTR(-ENODEV); } @@ -2837,9 +2867,81 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, type = nand_flash_ids; for (; type->name != NULL; type++) - if (dev_id == type->id) + if (*dev_id == type->id) break; + chip->onfi_version = 0; + if (!type->name || !type->pagesize) { + /* try ONFI for unknow chip or LP */ + chip->cmdfunc(mtd, NAND_CMD_READID, 0x20, -1); + if (chip->read_byte(mtd) == 'O' && + chip->read_byte(mtd) == 'N' && + chip->read_byte(mtd) == 'F' && + chip->read_byte(mtd) == 'I') { + + struct nand_onfi_params *p = &chip->onfi_params; + int i; + + printk(KERN_INFO "ONFI flash detected\n"); + chip->cmdfunc(mtd, NAND_CMD_PARAM, 0, -1); + for (i = 0; i < 3; i++) { + chip->read_buf(mtd, (uint8_t *)p, sizeof(*p)); + if (onfi_crc16(ONFI_CRC_BASE, (uint8_t *)p, 254) == + le16_to_cpu(p->crc)) + { + printk(KERN_INFO "ONFI param page %d valid\n", i); + break; + } + } + + if (i < 3) { + /* check version */ + int val = le16_to_cpu(p->revision); + if (val == 1 || val > (1 << 4)) + printk(KERN_INFO "%s: unsupported ONFI version: %d\n", + __func__, val); + else { + if (val & (1 << 4)) + chip->onfi_version = 22; + else if (val & (1 << 3)) + chip->onfi_version = 21; + else if (val & (1 << 2)) + chip->onfi_version = 20; + else + chip->onfi_version = 10; + } + } + + if (chip->onfi_version) { + sanitize_string(p->manufacturer, sizeof(p->manufacturer)); + sanitize_string(p->model, sizeof(p->model)); + if (!mtd->name) + mtd->name = p->model; + mtd->writesize = le32_to_cpu(p->byte_per_page); + mtd->erasesize = le32_to_cpu(p->pages_per_block)*mtd->writesize; + mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); + chip->chipsize = le32_to_cpu(p->blocks_per_lun) * mtd->erasesize; + busw = 0; + if (le16_to_cpu(p->features) & 1) + busw = NAND_BUSWIDTH_16; + + chip->options &= ~NAND_CHIPOPTIONS_MSK; + chip->options |= (NAND_NO_READRDY | + NAND_NO_AUTOINCR) & NAND_CHIPOPTIONS_MSK; + + goto ident_done; + + } + } + } + + chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1); + + /* Read entire ID string */ + + for (i = 0; i < 8; i++) + id_data[i] = chip->read_byte(mtd); + if (!type->name) return ERR_PTR(-ENODEV); @@ -2927,6 +3029,21 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, mtd->erasesize <<= ((id_data[3] & 0x03) << 1); } } + /* Get chip options, preserve non chip based options */ + chip->options &= ~NAND_CHIPOPTIONS_MSK; + chip->options |= type->options & NAND_CHIPOPTIONS_MSK; + + /* Check if chip is a not a samsung device. Do not clear the + * options for chips which are not having an extended id. + */ + if (*maf_id != NAND_MFR_SAMSUNG && !type->pagesize) + chip->options &= ~NAND_SAMSUNG_LP_OPTIONS; +ident_done: + + /* + * Set chip as a default. Board drivers can override it, if necessary + */ + chip->options |= NAND_NO_AUTOINCR; /* Try to identify manufacturer */ for (maf_idx = 0; nand_manuf_ids[maf_idx].id != 0x0; maf_idx++) { @@ -2941,7 +3058,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, if (busw != (chip->options & NAND_BUSWIDTH_16)) { printk(KERN_INFO "NAND device: Manufacturer ID:" " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, - dev_id, nand_manuf_ids[maf_idx].name, mtd->name); + *dev_id, nand_manuf_ids[maf_idx].name, mtd->name); printk(KERN_WARNING "NAND bus width %d instead %d bit\n", (chip->options & NAND_BUSWIDTH_16) ? 16 : 8, busw ? 16 : 8); @@ -2966,21 +3083,6 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, else chip->badblockpos = NAND_SMALL_BADBLOCK_POS; - /* Get chip options, preserve non chip based options */ - chip->options &= ~NAND_CHIPOPTIONS_MSK; - chip->options |= type->options & NAND_CHIPOPTIONS_MSK; - - /* - * Set chip as a default. Board drivers can override it, if necessary - */ - chip->options |= NAND_NO_AUTOINCR; - - /* Check if chip is a not a samsung device. Do not clear the - * options for chips which are not having an extended id. - */ - if (*maf_id != NAND_MFR_SAMSUNG && !type->pagesize) - chip->options &= ~NAND_SAMSUNG_LP_OPTIONS; - /* * Bad block marker is stored in the last page of each block * on Samsung and Hynix MLC devices; stored in first two pages @@ -3021,9 +3123,11 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, if (mtd->writesize > 512 && chip->cmdfunc == nand_command) chip->cmdfunc = nand_command_lp; + /* TODO onfi flash name */ printk(KERN_INFO "NAND device: Manufacturer ID:" - " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, dev_id, - nand_manuf_ids[maf_idx].name, type->name); + " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, *dev_id, + nand_manuf_ids[maf_idx].name, + chip->onfi_version ? type->name:chip->onfi_params.model); return type; } @@ -3042,7 +3146,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, int nand_scan_ident(struct mtd_info *mtd, int maxchips, struct nand_flash_dev *table) { - int i, busw, nand_maf_id; + int i, busw, nand_maf_id, nand_dev_id; struct nand_chip *chip = mtd->priv; struct nand_flash_dev *type; @@ -3052,7 +3156,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips, nand_set_defaults(chip, busw); /* Read the flash type */ - type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id, table); + type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id, &nand_dev_id, table); if (IS_ERR(type)) { if (!(chip->options & NAND_SCAN_SILENT_NODEV)) @@ -3070,7 +3174,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips, chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1); /* Read manufacturer and device IDs */ if (nand_maf_id != chip->read_byte(mtd) || - type->id != chip->read_byte(mtd)) + nand_dev_id != chip->read_byte(mtd)) break; } if (i > 1) -- cgit v1.2.3 From 6fb277ba847f37489dc22adffed700e0c3ea3acf Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Wed, 1 Sep 2010 22:28:59 +0200 Subject: mtd: nand: split ONFI detection logic to its own function In order to reduce the indentation and improve the readability of nand_get_ flash_type, split the ONFI detection logic to its own function. The detection logic inside nand_flash_detect_onfi is also rewritten to allow for less indentation. Signed-off-by: Florian Fainelli Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 132 +++++++++++++++++++++++-------------------- 1 file changed, 71 insertions(+), 61 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 5b26fffc3534..5b96f621f7c9 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2818,6 +2818,72 @@ static u16 onfi_crc16(u16 crc, u8 const *p, size_t len) return crc; } +/* + * Check if the NAND chip is ONFI compliant, returns 1 if it is, 0 otherwise + */ +static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, + int busw) +{ + struct nand_onfi_params *p = &chip->onfi_params; + int i; + int val; + + /* try ONFI for unknow chip or LP */ + chip->cmdfunc(mtd, NAND_CMD_READID, 0x20, -1); + if (chip->read_byte(mtd) != 'O' || chip->read_byte(mtd) != 'N' || + chip->read_byte(mtd) != 'F' || chip->read_byte(mtd) != 'I') + return 0; + + printk(KERN_INFO "ONFI flash detected\n"); + chip->cmdfunc(mtd, NAND_CMD_PARAM, 0, -1); + for (i = 0; i < 3; i++) { + chip->read_buf(mtd, (uint8_t *)p, sizeof(*p)); + if (onfi_crc16(ONFI_CRC_BASE, (uint8_t *)p, 254) == + le16_to_cpu(p->crc)) { + printk(KERN_INFO "ONFI param page %d valid\n", i); + break; + } + } + + if (i == 3) + return 0; + + /* check version */ + val = le16_to_cpu(p->revision); + if (val == 1 || val > (1 << 4)) { + printk(KERN_INFO "%s: unsupported ONFI version: %d\n", + __func__, val); + return 0; + } + + if (val & (1 << 4)) + chip->onfi_version = 22; + else if (val & (1 << 3)) + chip->onfi_version = 21; + else if (val & (1 << 2)) + chip->onfi_version = 20; + else + chip->onfi_version = 10; + + sanitize_string(p->manufacturer, sizeof(p->manufacturer)); + sanitize_string(p->model, sizeof(p->model)); + if (!mtd->name) + mtd->name = p->model; + mtd->writesize = le32_to_cpu(p->byte_per_page); + mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize; + mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); + chip->chipsize = le32_to_cpu(p->blocks_per_lun) * mtd->erasesize; + busw = 0; + if (le16_to_cpu(p->features) & 1) + busw = NAND_BUSWIDTH_16; + + chip->options &= ~NAND_CHIPOPTIONS_MSK; + chip->options |= (NAND_NO_READRDY | + NAND_NO_AUTOINCR) & NAND_CHIPOPTIONS_MSK; + + return 1; +} + /* * Get the flash and manufacturer id and lookup if the type is supported */ @@ -2828,6 +2894,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, { int i, maf_idx; u8 id_data[8]; + int ret; /* Select the device */ chip->select_chip(mtd, 0); @@ -2872,67 +2939,10 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, chip->onfi_version = 0; if (!type->name || !type->pagesize) { - /* try ONFI for unknow chip or LP */ - chip->cmdfunc(mtd, NAND_CMD_READID, 0x20, -1); - if (chip->read_byte(mtd) == 'O' && - chip->read_byte(mtd) == 'N' && - chip->read_byte(mtd) == 'F' && - chip->read_byte(mtd) == 'I') { - - struct nand_onfi_params *p = &chip->onfi_params; - int i; - - printk(KERN_INFO "ONFI flash detected\n"); - chip->cmdfunc(mtd, NAND_CMD_PARAM, 0, -1); - for (i = 0; i < 3; i++) { - chip->read_buf(mtd, (uint8_t *)p, sizeof(*p)); - if (onfi_crc16(ONFI_CRC_BASE, (uint8_t *)p, 254) == - le16_to_cpu(p->crc)) - { - printk(KERN_INFO "ONFI param page %d valid\n", i); - break; - } - } - - if (i < 3) { - /* check version */ - int val = le16_to_cpu(p->revision); - if (val == 1 || val > (1 << 4)) - printk(KERN_INFO "%s: unsupported ONFI version: %d\n", - __func__, val); - else { - if (val & (1 << 4)) - chip->onfi_version = 22; - else if (val & (1 << 3)) - chip->onfi_version = 21; - else if (val & (1 << 2)) - chip->onfi_version = 20; - else - chip->onfi_version = 10; - } - } - - if (chip->onfi_version) { - sanitize_string(p->manufacturer, sizeof(p->manufacturer)); - sanitize_string(p->model, sizeof(p->model)); - if (!mtd->name) - mtd->name = p->model; - mtd->writesize = le32_to_cpu(p->byte_per_page); - mtd->erasesize = le32_to_cpu(p->pages_per_block)*mtd->writesize; - mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); - chip->chipsize = le32_to_cpu(p->blocks_per_lun) * mtd->erasesize; - busw = 0; - if (le16_to_cpu(p->features) & 1) - busw = NAND_BUSWIDTH_16; - - chip->options &= ~NAND_CHIPOPTIONS_MSK; - chip->options |= (NAND_NO_READRDY | - NAND_NO_AUTOINCR) & NAND_CHIPOPTIONS_MSK; - - goto ident_done; - - } - } + /* Check is chip is ONFI compliant */ + ret = nand_flash_detect_onfi(mtd, chip, busw); + if (ret) + goto ident_done; } chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1); -- cgit v1.2.3 From f2df1ae3fe8d44d51bd7218a9da9134b83c7531e Mon Sep 17 00:00:00 2001 From: Gernot Hoyler Date: Thu, 2 Sep 2010 17:27:20 +0200 Subject: mtd: m25p80: Add support for two new Spansion SPI devices (S25FL-K) This patch adds support for Spansion S25FL016K and S25FL064K SPI flash. It has been tested with physical devices. Note that both parts exhibit a Winbond manufacturer ID so they might also be added to that section. Signed-off-by: Gernot Hoyler Signed-off-by: David Woodhouse --- drivers/mtd/devices/m25p80.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 6f512b5c117b..1f0f703bd2cc 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -666,6 +666,8 @@ static const struct spi_device_id m25p_ids[] = { { "s25sl12801", INFO(0x012018, 0x0301, 64 * 1024, 256, 0) }, { "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024, 64, 0) }, { "s25fl129p1", INFO(0x012018, 0x4d01, 64 * 1024, 256, 0) }, + { "s25fl016k", INFO(0xef4015, 0, 64 * 1024, 32, SECT_4K) }, + { "s25fl064k", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) }, /* SST -- large erase sizes are "overlays", "sectors" are 4K */ { "sst25vf040b", INFO(0xbf258d, 0, 64 * 1024, 8, SECT_4K) }, -- cgit v1.2.3 From 2bdb053a8119355eada46dfab88782449a26b39d Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Fri, 3 Sep 2010 12:35:37 +0200 Subject: mtd: davinci: relax a timeout for ECC-initialization MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sudhakar found out that 100µs are enough. Sadly, his updated patch was overlooked and an older version still using 100ms was merged. Fix this. Reference: http://patchwork.ozlabs.org/patch/59180/ Signed-off-by: Wolfram Sang Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/davinci_nand.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index e7129591c9c7..ad51f8ef0d4f 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -313,7 +313,7 @@ static int nand_davinci_correct_4bit(struct mtd_info *mtd, u32 syndrome[4]; u32 ecc_state; unsigned num_errors, corrected; - unsigned long timeo = jiffies + msecs_to_jiffies(100); + unsigned long timeo; /* All bytes 0xff? It's an erased page; ignore its ECC. */ for (i = 0; i < 10; i++) { @@ -373,6 +373,7 @@ compare: * long as ECC_STATE reads less than 4. After that, ECC HW has entered * correction state. */ + timeo = jiffies + usecs_to_jiffies(100); do { ecc_state = (davinci_nand_readl(info, NANDFSR_OFFSET) >> 8) & 0x0f; -- cgit v1.2.3 From f8ac04140e2215e1680440d5a8642553b0d2fa2d Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Tue, 7 Sep 2010 13:23:43 +0200 Subject: mtd: fix all checkpatch errors in nand_base.c Artem: it is much easier to verify patches against nand_base.c with checkpatch.pl when nand_base.c itself does not have so many checkpatch.pl warnings. Signed-off-by: Florian Fainelli Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 49 +++++++++++++++++++++++--------------------- 1 file changed, 26 insertions(+), 23 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 5b96f621f7c9..50c0d5f1c80a 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -59,7 +59,7 @@ static struct nand_ecclayout nand_oob_8 = { {.offset = 3, .length = 2}, {.offset = 6, - .length = 2}} + .length = 2} } }; static struct nand_ecclayout nand_oob_16 = { @@ -67,7 +67,7 @@ static struct nand_ecclayout nand_oob_16 = { .eccpos = {0, 1, 2, 3, 6, 7}, .oobfree = { {.offset = 8, - . length = 8}} + . length = 8} } }; static struct nand_ecclayout nand_oob_64 = { @@ -78,7 +78,7 @@ static struct nand_ecclayout nand_oob_64 = { 56, 57, 58, 59, 60, 61, 62, 63}, .oobfree = { {.offset = 2, - .length = 38}} + .length = 38} } }; static struct nand_ecclayout nand_oob_128 = { @@ -92,7 +92,7 @@ static struct nand_ecclayout nand_oob_128 = { 120, 121, 122, 123, 124, 125, 126, 127}, .oobfree = { {.offset = 2, - .length = 78}} + .length = 78} } }; static int nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, @@ -612,7 +612,8 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, NAND_CTRL_CLE | NAND_CTRL_CHANGE); chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); - while (!(chip->read_byte(mtd) & NAND_STATUS_READY)) ; + while (!(chip->read_byte(mtd) & NAND_STATUS_READY)) + ; return; /* This applies to read commands */ @@ -718,7 +719,8 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE); chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); - while (!(chip->read_byte(mtd) & NAND_STATUS_READY)) ; + while (!(chip->read_byte(mtd) & NAND_STATUS_READY)) + ; return; case NAND_CMD_RNDOUT: @@ -834,7 +836,7 @@ static void panic_nand_wait(struct mtd_info *mtd, struct nand_chip *chip, break; } mdelay(1); - } + } } /** @@ -1390,7 +1392,7 @@ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip, static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob, struct mtd_oob_ops *ops, size_t len) { - switch(ops->mode) { + switch (ops->mode) { case MTD_OOB_PLACE: case MTD_OOB_RAW: @@ -1402,7 +1404,7 @@ static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob, uint32_t boffs = 0, roffs = ops->ooboffs; size_t bytes = 0; - for(; free->length && len; free++, len -= bytes) { + for (; free->length && len; free++, len -= bytes) { /* Read request not from offset 0 ? */ if (unlikely(roffs)) { if (roffs >= free->length) { @@ -1466,7 +1468,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, buf = ops->datbuf; oob = ops->oobbuf; - while(1) { + while (1) { bytes = min(mtd->writesize - col, readlen); aligned = (bytes == mtd->writesize); @@ -1791,7 +1793,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, realpage = (int)(from >> chip->page_shift); page = realpage & chip->pagemask; - while(1) { + while (1) { sndcmd = chip->ecc.read_oob(mtd, chip, page, sndcmd); len = min(len, readlen); @@ -1861,7 +1863,7 @@ static int nand_read_oob(struct mtd_info *mtd, loff_t from, nand_get_device(chip, mtd, FL_READING); - switch(ops->mode) { + switch (ops->mode) { case MTD_OOB_PLACE: case MTD_OOB_AUTO: case MTD_OOB_RAW: @@ -2099,7 +2101,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, size_t len, struct mtd_oob_ops *ops) { - switch(ops->mode) { + switch (ops->mode) { case MTD_OOB_PLACE: case MTD_OOB_RAW: @@ -2111,7 +2113,7 @@ static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, size_t len, uint32_t boffs = 0, woffs = ops->ooboffs; size_t bytes = 0; - for(; free->length && len; free++, len -= bytes) { + for (; free->length && len; free++, len -= bytes) { /* Write request not from offset 0 ? */ if (unlikely(woffs)) { if (woffs >= free->length) { @@ -2137,7 +2139,7 @@ static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, size_t len, return NULL; } -#define NOTALIGNED(x) (x & (chip->subpagesize - 1)) != 0 +#define NOTALIGNED(x) ((x & (chip->subpagesize - 1)) != 0) /** * nand_do_write_ops - [Internal] NAND write with ECC @@ -2203,7 +2205,7 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, if (ops->ooboffs && (ops->ooboffs + ops->ooblen > oobmaxlen)) return -EINVAL; - while(1) { + while (1) { int bytes = mtd->writesize; int cached = writelen > bytes && page != blockmask; uint8_t *wbuf = buf; @@ -2431,7 +2433,7 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to, nand_get_device(chip, mtd, FL_WRITING); - switch(ops->mode) { + switch (ops->mode) { case MTD_OOB_PLACE: case MTD_OOB_AUTO: case MTD_OOB_RAW: @@ -2511,7 +2513,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, { int page, status, pages_per_block, ret, chipnr; struct nand_chip *chip = mtd->priv; - loff_t rewrite_bbt[NAND_MAX_CHIPS]={0}; + loff_t rewrite_bbt[NAND_MAX_CHIPS] = {0}; unsigned int bbt_masked_page = 0xffffffff; loff_t len; @@ -2706,7 +2708,8 @@ static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs) struct nand_chip *chip = mtd->priv; int ret; - if ((ret = nand_block_isbad(mtd, ofs))) { + ret = nand_block_isbad(mtd, ofs); + if (ret) { /* If it was bad already, return success and do nothing. */ if (ret > 0) return 0; @@ -2935,7 +2938,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, for (; type->name != NULL; type++) if (*dev_id == type->id) - break; + break; chip->onfi_version = 0; if (!type->name || !type->pagesize) { @@ -3137,7 +3140,7 @@ ident_done: printk(KERN_INFO "NAND device: Manufacturer ID:" " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, *dev_id, nand_manuf_ids[maf_idx].name, - chip->onfi_version ? type->name:chip->onfi_params.model); + chip->onfi_version ? type->name : chip->onfi_params.model); return type; } @@ -3360,7 +3363,7 @@ int nand_scan_tail(struct mtd_info *mtd) * mode */ chip->ecc.steps = mtd->writesize / chip->ecc.size; - if(chip->ecc.steps * chip->ecc.size != mtd->writesize) { + if (chip->ecc.steps * chip->ecc.size != mtd->writesize) { printk(KERN_WARNING "Invalid ecc parameters\n"); BUG(); } @@ -3372,7 +3375,7 @@ int nand_scan_tail(struct mtd_info *mtd) */ if (!(chip->options & NAND_NO_SUBPAGE_WRITE) && !(chip->cellinfo & NAND_CI_CELLTYPE_MSK)) { - switch(chip->ecc.steps) { + switch (chip->ecc.steps) { case 2: mtd->subpage_sft = 1; break; -- cgit v1.2.3 From 7351d3a5dbf42ba3299af71db3296be447bc1516 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Tue, 7 Sep 2010 13:23:45 +0200 Subject: mtd: fix almost all checkpatch warnings in nand_base.c Only 3 warnings are left, one is off by one character, but splitting the line would reduce the readability. One is for a for loop statement, which would also not improve readability. The last one is a false positive on a test. Artem: it is much easier to verify patches against nand_base.c with checkpatch.pl when nand_base.c itself does not have so many checkpatch.pl warnings. Signed-off-by: Florian Fainelli Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 73 ++++++++++++++++++++++++++------------------ 1 file changed, 43 insertions(+), 30 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 50c0d5f1c80a..922b890c8fcb 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -45,7 +45,7 @@ #include #include #include -#include +#include #ifdef CONFIG_MTD_PARTITIONS #include @@ -786,7 +786,7 @@ nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state) spinlock_t *lock = &chip->controller->lock; wait_queue_head_t *wq = &chip->controller->wq; DECLARE_WAITQUEUE(wait, current); - retry: +retry: spin_lock(lock); /* Hardware controller shared among independent devices */ @@ -982,6 +982,7 @@ out: return ret; } +EXPORT_SYMBOL(nand_unlock); /** * nand_lock - [REPLACEABLE] locks all blocks present in the device @@ -1051,6 +1052,7 @@ out: return ret; } +EXPORT_SYMBOL(nand_lock); /** * nand_read_page_raw - [Intern] read raw page data without ecc @@ -1078,8 +1080,9 @@ static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, * * We need a special oob layout and handling even when OOB isn't used. */ -static int nand_read_page_raw_syndrome(struct mtd_info *mtd, struct nand_chip *chip, - uint8_t *buf, int page) +static int nand_read_page_raw_syndrome(struct mtd_info *mtd, + struct nand_chip *chip, + uint8_t *buf, int page) { int eccsize = chip->ecc.size; int eccbytes = chip->ecc.bytes; @@ -1160,7 +1163,8 @@ static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, * @readlen: data length * @bufpoi: buffer to store read data */ -static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, uint32_t data_offs, uint32_t readlen, uint8_t *bufpoi) +static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, + uint32_t data_offs, uint32_t readlen, uint8_t *bufpoi) { int start_step, end_step, num_steps; uint32_t *eccpos = chip->ecc.layout->eccpos; @@ -1168,6 +1172,7 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, uint3 int data_col_addr, i, gaps = 0; int datafrag_len, eccfrag_len, aligned_len, aligned_pos; int busw = (chip->options & NAND_BUSWIDTH_16) ? 2 : 1; + int index = 0; /* Column address wihin the page aligned to ECC size (256bytes). */ start_step = data_offs / chip->ecc.size; @@ -1206,25 +1211,29 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, uint3 } else { /* send the command to read the particular ecc bytes */ /* take care about buswidth alignment in read_buf */ - aligned_pos = eccpos[start_step * chip->ecc.bytes] & ~(busw - 1); + index = start_step * chip->ecc.bytes; + + aligned_pos = eccpos[index] & ~(busw - 1); aligned_len = eccfrag_len; - if (eccpos[start_step * chip->ecc.bytes] & (busw - 1)) + if (eccpos[index] & (busw - 1)) aligned_len++; - if (eccpos[(start_step + num_steps) * chip->ecc.bytes] & (busw - 1)) + if (eccpos[index + (num_steps * chip->ecc.bytes)] & (busw - 1)) aligned_len++; - chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize + aligned_pos, -1); + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, + mtd->writesize + aligned_pos, -1); chip->read_buf(mtd, &chip->oob_poi[aligned_pos], aligned_len); } for (i = 0; i < eccfrag_len; i++) - chip->buffers->ecccode[i] = chip->oob_poi[eccpos[i + start_step * chip->ecc.bytes]]; + chip->buffers->ecccode[i] = chip->oob_poi[eccpos[i + index]]; p = bufpoi + data_col_addr; for (i = 0; i < eccfrag_len ; i += chip->ecc.bytes, p += chip->ecc.size) { int stat; - stat = chip->ecc.correct(mtd, p, &chip->buffers->ecccode[i], &chip->buffers->ecccalc[i]); + stat = chip->ecc.correct(mtd, p, + &chip->buffers->ecccode[i], &chip->buffers->ecccalc[i]); if (stat < 0) mtd->ecc_stats.failed++; else @@ -1486,7 +1495,8 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, ret = chip->ecc.read_page_raw(mtd, chip, bufpoi, page); else if (!aligned && NAND_SUBPAGE_READ(chip) && !oob) - ret = chip->ecc.read_subpage(mtd, chip, col, bytes, bufpoi); + ret = chip->ecc.read_subpage(mtd, chip, + col, bytes, bufpoi); else ret = chip->ecc.read_page(mtd, chip, bufpoi, page); @@ -1878,7 +1888,7 @@ static int nand_read_oob(struct mtd_info *mtd, loff_t from, else ret = nand_do_read_ops(mtd, from, ops); - out: +out: nand_release_device(mtd); return ret; } @@ -1907,8 +1917,9 @@ static void nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip, * * We need a special oob layout and handling even when ECC isn't checked. */ -static void nand_write_page_raw_syndrome(struct mtd_info *mtd, struct nand_chip *chip, - const uint8_t *buf) +static void nand_write_page_raw_syndrome(struct mtd_info *mtd, + struct nand_chip *chip, + const uint8_t *buf) { int eccsize = chip->ecc.size; int eccbytes = chip->ecc.bytes; @@ -2448,7 +2459,7 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to, else ret = nand_do_write_ops(mtd, to, ops); - out: +out: nand_release_device(mtd); return ret; } @@ -2634,7 +2645,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, } instr->state = MTD_ERASE_DONE; - erase_exit: +erase_exit: ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO; @@ -2892,7 +2903,8 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, */ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, struct nand_chip *chip, - int busw, int *maf_id, int *dev_id, + int busw, + int *maf_id, int *dev_id, struct nand_flash_dev *type) { int i, maf_idx; @@ -3087,8 +3099,10 @@ ident_done: ffs(mtd->erasesize) - 1; if (chip->chipsize & 0xffffffff) chip->chip_shift = ffs((unsigned)chip->chipsize) - 1; - else - chip->chip_shift = ffs((unsigned)(chip->chipsize >> 32)) + 32 - 1; + else { + chip->chip_shift = ffs((unsigned)(chip->chipsize >> 32)); + chip->chip_shift += 32 - 1; + } /* Set the bad block position */ if (mtd->writesize > 512 || (busw & NAND_BUSWIDTH_16)) @@ -3169,7 +3183,8 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips, nand_set_defaults(chip, busw); /* Read the flash type */ - type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id, &nand_dev_id, table); + type = nand_get_flash_type(mtd, chip, busw, + &nand_maf_id, &nand_dev_id, table); if (IS_ERR(type)) { if (!(chip->options & NAND_SCAN_SILENT_NODEV)) @@ -3199,6 +3214,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips, return 0; } +EXPORT_SYMBOL(nand_scan_ident); /** @@ -3427,10 +3443,11 @@ int nand_scan_tail(struct mtd_info *mtd) /* Build bad block table */ return chip->scan_bbt(mtd); } +EXPORT_SYMBOL(nand_scan_tail); /* is_module_text_address() isn't exported, and it's mostly a pointless - test if this is a module _anyway_ -- they'd have to try _really_ hard - to call us from in-kernel code if the core NAND support is modular. */ + * test if this is a module _anyway_ -- they'd have to try _really_ hard + * to call us from in-kernel code if the core NAND support is modular. */ #ifdef MODULE #define caller_is_module() (1) #else @@ -3466,6 +3483,7 @@ int nand_scan(struct mtd_info *mtd, int maxchips) ret = nand_scan_tail(mtd); return ret; } +EXPORT_SYMBOL(nand_scan); /** * nand_release - [NAND Interface] Free resources held by the NAND device @@ -3492,12 +3510,6 @@ void nand_release(struct mtd_info *mtd) & NAND_BBT_DYNAMICSTRUCT) kfree(chip->badblock_pattern); } - -EXPORT_SYMBOL_GPL(nand_lock); -EXPORT_SYMBOL_GPL(nand_unlock); -EXPORT_SYMBOL_GPL(nand_scan); -EXPORT_SYMBOL_GPL(nand_scan_ident); -EXPORT_SYMBOL_GPL(nand_scan_tail); EXPORT_SYMBOL_GPL(nand_release); static int __init nand_base_init(void) @@ -3515,5 +3527,6 @@ module_init(nand_base_init); module_exit(nand_base_exit); MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Steven J. Hill , Thomas Gleixner "); +MODULE_AUTHOR("Steven J. Hill "); +MODULE_AUTHOR("Thomas Gleixner "); MODULE_DESCRIPTION("Generic NAND flash driver code"); -- cgit v1.2.3 From 0eecf4b20d63e0662d0a9732e9bd8a84bd3f872c Mon Sep 17 00:00:00 2001 From: Roy Zang Date: Wed, 8 Sep 2010 16:47:55 +0800 Subject: mtd: fix the build warning for fsl_upm.c Fix the build warning: drivers/mtd/nand/fsl_upm.c: In function 'fun_chip_init': drivers/mtd/nand/fsl_upm.c:190: warning: format '%x' expects type 'unsigned int', but argument 3 has type 'resource_size_t' Signed-off-by: Roy Zang Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/fsl_upm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c index 4eff8b25e5af..c8ab15653e7c 100644 --- a/drivers/mtd/nand/fsl_upm.c +++ b/drivers/mtd/nand/fsl_upm.c @@ -186,7 +186,7 @@ static int __devinit fun_chip_init(struct fsl_upm_nand *fun, if (!flash_np) return -ENODEV; - fun->mtd.name = kasprintf(GFP_KERNEL, "%x.%s", io_res->start, + fun->mtd.name = kasprintf(GFP_KERNEL, "0x%llx.%s", (u64)io_res->start, flash_np->name); if (!fun->mtd.name) { ret = -ENOMEM; -- cgit v1.2.3 From 5e59be1f351b0ca9c5a43c627e3ed676ae93a941 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 8 Sep 2010 21:39:56 +0200 Subject: mtd: sanity check ioctl input If "ur_idx" is wrong we could go past the end of the array. The "ur_idx" comes from root so it's not a huge deal, but adding a sanity check makes the code more robust. Signed-off-by: Dan Carpenter Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/mtdchar.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 1d981a5c1b13..5895de7018d4 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -546,6 +546,9 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) if (get_user(ur_idx, &(ur->regionindex))) return -EFAULT; + if (ur_idx >= mtd->numeraseregions) + return -EINVAL; + kr = &(mtd->eraseregions[ur_idx]); if (put_user(kr->offset, &(ur->offset)) -- cgit v1.2.3 From bc49c28962de0e3758ac2cdc7821d506b827f219 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Sun, 12 Sep 2010 15:52:59 +0200 Subject: mtd: add Broadcom BCM63xx image tag partition parser This patch adds support for parsing Broadcom BCM63xx image tag format and creating MTD partitions accordingly. This driver is a platform_device which can be instantiated accordingly by bcm63xx board support code. Signed-off-by: Daniel Dickinson Signed-off-by: Mike Albon Signed-off-by: Florian Fainelli Signed-off-by: David Woodhouse --- drivers/mtd/maps/Kconfig | 9 ++ drivers/mtd/maps/Makefile | 1 + drivers/mtd/maps/bcm963xx-flash.c | 271 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 281 insertions(+) create mode 100644 drivers/mtd/maps/bcm963xx-flash.c (limited to 'drivers') diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 701d942c6795..e5eb65cfb3eb 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -251,6 +251,15 @@ config MTD_NETtel help Support for flash chips on NETtel/SecureEdge/SnapGear boards. +config MTD_BCM963XX + tristate "Map driver for Broadcom BCM963xx boards" + depends on BCM63XX + select MTD_MAP_BANK_WIDTH_2 + select MTD_CFI_I1 + help + Support for parsing CFE image tag and creating MTD partitions on + Broadcom BCM63xx boards. + config MTD_DILNETPC tristate "CFI Flash device mapped on DIL/Net PC" depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT && BROKEN diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile index f216bb573713..c7869c7a6b18 100644 --- a/drivers/mtd/maps/Makefile +++ b/drivers/mtd/maps/Makefile @@ -58,3 +58,4 @@ obj-$(CONFIG_MTD_BFIN_ASYNC) += bfin-async-flash.o obj-$(CONFIG_MTD_RBTX4939) += rbtx4939-flash.o obj-$(CONFIG_MTD_VMU) += vmu-flash.o obj-$(CONFIG_MTD_GPIO_ADDR) += gpio-addr-flash.o +obj-$(CONFIG_MTD_BCM963XX) += bcm963xx-flash.o diff --git a/drivers/mtd/maps/bcm963xx-flash.c b/drivers/mtd/maps/bcm963xx-flash.c new file mode 100644 index 000000000000..d175c120ee84 --- /dev/null +++ b/drivers/mtd/maps/bcm963xx-flash.c @@ -0,0 +1,271 @@ +/* + * Copyright © 2006-2008 Florian Fainelli + * Mike Albon + * Copyright © 2009-2010 Daniel Dickinson + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that 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 + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define BCM63XX_BUSWIDTH 2 /* Buswidth */ +#define BCM63XX_EXTENDED_SIZE 0xBFC00000 /* Extended flash address */ + +#define PFX KBUILD_MODNAME ": " + +static struct mtd_partition *parsed_parts; + +static struct mtd_info *bcm963xx_mtd_info; + +static struct map_info bcm963xx_map = { + .name = "bcm963xx", + .bankwidth = BCM63XX_BUSWIDTH, +}; + +static int parse_cfe_partitions(struct mtd_info *master, + struct mtd_partition **pparts) +{ + /* CFE, NVRAM and global Linux are always present */ + int nrparts = 3, curpart = 0; + struct bcm_tag *buf; + struct mtd_partition *parts; + int ret; + size_t retlen; + unsigned int rootfsaddr, kerneladdr, spareaddr; + unsigned int rootfslen, kernellen, sparelen, totallen; + int namelen = 0; + int i; + char *boardid; + char *tagversion; + + /* Allocate memory for buffer */ + buf = vmalloc(sizeof(struct bcm_tag)); + if (!buf) + return -ENOMEM; + + /* Get the tag */ + ret = master->read(master, master->erasesize, sizeof(struct bcm_tag), + &retlen, (void *)buf); + if (retlen != sizeof(struct bcm_tag)) { + vfree(buf); + return -EIO; + } + + sscanf(buf->kernel_address, "%u", &kerneladdr); + sscanf(buf->kernel_length, "%u", &kernellen); + sscanf(buf->total_length, "%u", &totallen); + tagversion = &(buf->tag_version[0]); + boardid = &(buf->board_id[0]); + + printk(KERN_INFO PFX "CFE boot tag found with version %s " + "and board type %s\n", tagversion, boardid); + + kerneladdr = kerneladdr - BCM63XX_EXTENDED_SIZE; + rootfsaddr = kerneladdr + kernellen; + spareaddr = roundup(totallen, master->erasesize) + master->erasesize; + sparelen = master->size - spareaddr - master->erasesize; + rootfslen = spareaddr - rootfsaddr; + + /* Determine number of partitions */ + namelen = 8; + if (rootfslen > 0) { + nrparts++; + namelen += 6; + }; + if (kernellen > 0) { + nrparts++; + namelen += 6; + }; + + /* Ask kernel for more memory */ + parts = kzalloc(sizeof(*parts) * nrparts + 10 * nrparts, GFP_KERNEL); + if (!parts) { + vfree(buf); + return -ENOMEM; + }; + + /* Start building partition list */ + parts[curpart].name = "CFE"; + parts[curpart].offset = 0; + parts[curpart].size = master->erasesize; + curpart++; + + if (kernellen > 0) { + parts[curpart].name = "kernel"; + parts[curpart].offset = kerneladdr; + parts[curpart].size = kernellen; + curpart++; + }; + + if (rootfslen > 0) { + parts[curpart].name = "rootfs"; + parts[curpart].offset = rootfsaddr; + parts[curpart].size = rootfslen; + if (sparelen > 0) + parts[curpart].size += sparelen; + curpart++; + }; + + parts[curpart].name = "nvram"; + parts[curpart].offset = master->size - master->erasesize; + parts[curpart].size = master->erasesize; + + /* Global partition "linux" to make easy firmware upgrade */ + curpart++; + parts[curpart].name = "linux"; + parts[curpart].offset = parts[0].size; + parts[curpart].size = master->size - parts[0].size - parts[3].size; + + for (i = 0; i < nrparts; i++) + printk(KERN_INFO PFX "Partition %d is %s offset %lx and " + "length %lx\n", i, parts[i].name, + (long unsigned int)(parts[i].offset), + (long unsigned int)(parts[i].size)); + + printk(KERN_INFO PFX "Spare partition is %x offset and length %x\n", + spareaddr, sparelen); + *pparts = parts; + vfree(buf); + + return nrparts; +}; + +static int bcm963xx_detect_cfe(struct mtd_info *master) +{ + int idoffset = 0x4e0; + static char idstring[8] = "CFE1CFE1"; + char buf[9]; + int ret; + size_t retlen; + + ret = master->read(master, idoffset, 8, &retlen, (void *)buf); + buf[retlen] = 0; + printk(KERN_INFO PFX "Read Signature value of %s\n", buf); + + return strncmp(idstring, buf, 8); +} + +static int bcm963xx_probe(struct platform_device *pdev) +{ + int err = 0; + int parsed_nr_parts = 0; + char *part_type; + struct resource *r; + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) { + dev_err(&pdev->dev, "no resource supplied\n"); + return -ENODEV; + } + + bcm963xx_map.phys = r->start; + bcm963xx_map.size = resource_size(r); + bcm963xx_map.virt = ioremap(r->start, resource_size(r)); + if (!bcm963xx_map.virt) { + dev_err(&pdev->dev, "failed to ioremap\n"); + return -EIO; + } + + dev_info(&pdev->dev, "0x%08lx at 0x%08x\n", + bcm963xx_map.size, bcm963xx_map.phys); + + simple_map_init(&bcm963xx_map); + + bcm963xx_mtd_info = do_map_probe("cfi_probe", &bcm963xx_map); + if (!bcm963xx_mtd_info) { + dev_err(&pdev->dev, "failed to probe using CFI\n"); + err = -EIO; + goto err_probe; + } + + bcm963xx_mtd_info->owner = THIS_MODULE; + + /* This is mutually exclusive */ + if (bcm963xx_detect_cfe(bcm963xx_mtd_info) == 0) { + dev_info(&pdev->dev, "CFE bootloader detected\n"); + if (parsed_nr_parts == 0) { + int ret = parse_cfe_partitions(bcm963xx_mtd_info, + &parsed_parts); + if (ret > 0) { + part_type = "CFE"; + parsed_nr_parts = ret; + } + } + } else { + dev_info(&pdev->dev, "unsupported bootloader\n"); + err = -ENODEV; + goto err_probe; + } + + return add_mtd_partitions(bcm963xx_mtd_info, parsed_parts, + parsed_nr_parts); + +err_probe: + iounmap(bcm963xx_map.virt); + return err; +} + +static int bcm963xx_remove(struct platform_device *pdev) +{ + if (bcm963xx_mtd_info) { + del_mtd_partitions(bcm963xx_mtd_info); + map_destroy(bcm963xx_mtd_info); + } + + if (bcm963xx_map.virt) { + iounmap(bcm963xx_map.virt); + bcm963xx_map.virt = 0; + } + + return 0; +} + +static struct platform_driver bcm63xx_mtd_dev = { + .probe = bcm963xx_probe, + .remove = bcm963xx_remove, + .driver = { + .name = "bcm963xx-flash", + .owner = THIS_MODULE, + }, +}; + +static int __init bcm963xx_mtd_init(void) +{ + return platform_driver_register(&bcm63xx_mtd_dev); +} + +static void __exit bcm963xx_mtd_exit(void) +{ + platform_driver_unregister(&bcm63xx_mtd_dev); +} + +module_init(bcm963xx_mtd_init); +module_exit(bcm963xx_mtd_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Broadcom BCM63xx MTD driver for CFE and RedBoot"); +MODULE_AUTHOR("Daniel Dickinson "); +MODULE_AUTHOR("Florian Fainelli "); +MODULE_AUTHOR("Mike Albon "); -- cgit v1.2.3 From c1194c793240330ce59500d67737e3f28b4bde40 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Fri, 3 Sep 2010 22:01:16 +0300 Subject: mtd: nand_base: do not cache pages with uncorrectable ECC errors Currently MTD caches the last read NAND page, even if there was an uncorrectable ECC error. This patch prevents caching in case of uncorrectable ECC errors. The reason is that we want to allow the user to re-read the NAND page several times. In case of unstable bits re-trying may help. Moreover, current behavior is wrong because the first read returns -EBADMSG (correctly) but the second read succeeds and incorrectly returns 0 (because we read from the cache). Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 922b890c8fcb..0b70c175999c 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1505,7 +1505,8 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, /* Transfer not aligned data */ if (!aligned) { - if (!NAND_SUBPAGE_READ(chip) && !oob) + if (!NAND_SUBPAGE_READ(chip) && !oob && + !(mtd->ecc_stats.failed - stats.failed)) chip->pagebuf = realpage; memcpy(buf, chip->buffers->databuf + col, bytes); } -- cgit v1.2.3 From d2ac467a108400ff1ae682a423c7d41265e62d47 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 30 Aug 2010 13:00:48 +0200 Subject: mtd: m25p80: Add support for the Winbond W25Q64 This patch adds support for the Winbond W25Q64 serial flash. Signed-off-by: Thierry Reding Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/devices/m25p80.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 1f0f703bd2cc..b6fd7c254de6 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -716,6 +716,7 @@ static const struct spi_device_id m25p_ids[] = { { "w25x32", INFO(0xef3016, 0, 64 * 1024, 64, SECT_4K) }, { "w25q32", INFO(0xef4016, 0, 64 * 1024, 64, SECT_4K) }, { "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) }, + { "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) }, /* Catalyst / On Semiconductor -- non-JEDEC */ { "cat25c11", CAT25_INFO( 16, 8, 16, 1) }, -- cgit v1.2.3 From 6c009ab89a212b4364cdb74192d438f542fb291c Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 13 Sep 2010 00:35:22 +0200 Subject: mtd: generic FSMC NAND MTD driver This is the same driver submitted by ST Micros SPEAr team but generalized and tested on the ST-Ericsson U300. It probably easily works on the NHK8815 too. Signed-off-by: Vipin Kumar Signed-off-by: Rajeev Kumar Signed-off-by: Shiraz Hashim Signed-off-by: Viresh Kumar Signed-off-by: Linus Walleij Signed-off-by: David Woodhouse --- drivers/mtd/nand/Kconfig | 7 + drivers/mtd/nand/Makefile | 1 + drivers/mtd/nand/fsmc_nand.c | 866 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 874 insertions(+) create mode 100644 drivers/mtd/nand/fsmc_nand.c (limited to 'drivers') diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index a6f22f5bbef6..a494cce704b9 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -524,4 +524,11 @@ config MTD_NAND_JZ4740 help Enables support for NAND Flash on JZ4740 SoC based boards. +config MTD_NAND_FSMC + tristate "Support for NAND on ST Micros FSMC" + depends on PLAT_SPEAR || PLAT_NOMADIK || MACH_U300 + help + Enables support for NAND Flash chips on the ST Microelectronics + Flexible Static Memory Controller (FSMC) + endif # MTD_NAND diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index ac83dcdac5d6..8ad6faec72cb 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -19,6 +19,7 @@ obj-$(CONFIG_MTD_NAND_PPCHAMELEONEVB) += ppchameleonevb.o obj-$(CONFIG_MTD_NAND_S3C2410) += s3c2410.o obj-$(CONFIG_MTD_NAND_DAVINCI) += davinci_nand.o obj-$(CONFIG_MTD_NAND_DISKONCHIP) += diskonchip.o +obj-$(CONFIG_MTD_NAND_FSMC) += fsmc_nand.o obj-$(CONFIG_MTD_NAND_H1900) += h1910.o obj-$(CONFIG_MTD_NAND_RTC_FROM4) += rtc_from4.o obj-$(CONFIG_MTD_NAND_SHARPSL) += sharpsl.o diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c new file mode 100644 index 000000000000..02edfba25b0c --- /dev/null +++ b/drivers/mtd/nand/fsmc_nand.c @@ -0,0 +1,866 @@ +/* + * drivers/mtd/nand/fsmc_nand.c + * + * ST Microelectronics + * Flexible Static Memory Controller (FSMC) + * Driver for NAND portions + * + * Copyright © 2010 ST Microelectronics + * Vipin Kumar + * Ashish Priyadarshi + * + * Based on drivers/mtd/nand/nomadik_nand.c + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static struct nand_ecclayout fsmc_ecc1_layout = { + .eccbytes = 24, + .eccpos = {2, 3, 4, 18, 19, 20, 34, 35, 36, 50, 51, 52, + 66, 67, 68, 82, 83, 84, 98, 99, 100, 114, 115, 116}, + .oobfree = { + {.offset = 8, .length = 8}, + {.offset = 24, .length = 8}, + {.offset = 40, .length = 8}, + {.offset = 56, .length = 8}, + {.offset = 72, .length = 8}, + {.offset = 88, .length = 8}, + {.offset = 104, .length = 8}, + {.offset = 120, .length = 8} + } +}; + +static struct nand_ecclayout fsmc_ecc4_lp_layout = { + .eccbytes = 104, + .eccpos = { 2, 3, 4, 5, 6, 7, 8, + 9, 10, 11, 12, 13, 14, + 18, 19, 20, 21, 22, 23, 24, + 25, 26, 27, 28, 29, 30, + 34, 35, 36, 37, 38, 39, 40, + 41, 42, 43, 44, 45, 46, + 50, 51, 52, 53, 54, 55, 56, + 57, 58, 59, 60, 61, 62, + 66, 67, 68, 69, 70, 71, 72, + 73, 74, 75, 76, 77, 78, + 82, 83, 84, 85, 86, 87, 88, + 89, 90, 91, 92, 93, 94, + 98, 99, 100, 101, 102, 103, 104, + 105, 106, 107, 108, 109, 110, + 114, 115, 116, 117, 118, 119, 120, + 121, 122, 123, 124, 125, 126 + }, + .oobfree = { + {.offset = 15, .length = 3}, + {.offset = 31, .length = 3}, + {.offset = 47, .length = 3}, + {.offset = 63, .length = 3}, + {.offset = 79, .length = 3}, + {.offset = 95, .length = 3}, + {.offset = 111, .length = 3}, + {.offset = 127, .length = 1} + } +}; + +/* + * ECC placement definitions in oobfree type format. + * There are 13 bytes of ecc for every 512 byte block and it has to be read + * consecutively and immediately after the 512 byte data block for hardware to + * generate the error bit offsets in 512 byte data. + * Managing the ecc bytes in the following way makes it easier for software to + * read ecc bytes consecutive to data bytes. This way is similar to + * oobfree structure maintained already in generic nand driver + */ +static struct fsmc_eccplace fsmc_ecc4_lp_place = { + .eccplace = { + {.offset = 2, .length = 13}, + {.offset = 18, .length = 13}, + {.offset = 34, .length = 13}, + {.offset = 50, .length = 13}, + {.offset = 66, .length = 13}, + {.offset = 82, .length = 13}, + {.offset = 98, .length = 13}, + {.offset = 114, .length = 13} + } +}; + +static struct nand_ecclayout fsmc_ecc4_sp_layout = { + .eccbytes = 13, + .eccpos = { 0, 1, 2, 3, 6, 7, 8, + 9, 10, 11, 12, 13, 14 + }, + .oobfree = { + {.offset = 15, .length = 1}, + } +}; + +static struct fsmc_eccplace fsmc_ecc4_sp_place = { + .eccplace = { + {.offset = 0, .length = 4}, + {.offset = 6, .length = 9} + } +}; + +/* + * Default partition tables to be used if the partition information not + * provided through platform data + */ +#define PARTITION(n, off, sz) {.name = n, .offset = off, .size = sz} + +/* + * Default partition layout for small page(= 512 bytes) devices + * Size for "Root file system" is updated in driver based on actual device size + */ +static struct mtd_partition partition_info_16KB_blk[] = { + PARTITION("X-loader", 0, 4 * 0x4000), + PARTITION("U-Boot", 0x10000, 20 * 0x4000), + PARTITION("Kernel", 0x60000, 256 * 0x4000), + PARTITION("Root File System", 0x460000, 0), +}; + +/* + * Default partition layout for large page(> 512 bytes) devices + * Size for "Root file system" is updated in driver based on actual device size + */ +static struct mtd_partition partition_info_128KB_blk[] = { + PARTITION("X-loader", 0, 4 * 0x20000), + PARTITION("U-Boot", 0x80000, 12 * 0x20000), + PARTITION("Kernel", 0x200000, 48 * 0x20000), + PARTITION("Root File System", 0x800000, 0), +}; + +#ifdef CONFIG_MTD_CMDLINE_PARTS +const char *part_probes[] = { "cmdlinepart", NULL }; +#endif + +/** + * struct fsmc_nand_data - atructure for FSMC NAND device state + * + * @mtd: MTD info for a NAND flash. + * @nand: Chip related info for a NAND flash. + * @partitions: Partition info for a NAND Flash. + * @nr_partitions: Total number of partition of a NAND flash. + * + * @ecc_place: ECC placing locations in oobfree type format. + * @bank: Bank number for probed device. + * @clk: Clock structure for FSMC. + * + * @data_va: NAND port for Data. + * @cmd_va: NAND port for Command. + * @addr_va: NAND port for Address. + * @regs_va: FSMC regs base address. + */ +struct fsmc_nand_data { + struct mtd_info mtd; + struct nand_chip nand; + struct mtd_partition *partitions; + unsigned int nr_partitions; + + struct fsmc_eccplace *ecc_place; + unsigned int bank; + struct clk *clk; + + struct resource *resregs; + struct resource *rescmd; + struct resource *resaddr; + struct resource *resdata; + + void __iomem *data_va; + void __iomem *cmd_va; + void __iomem *addr_va; + void __iomem *regs_va; + + void (*select_chip)(uint32_t bank, uint32_t busw); +}; + +/* Assert CS signal based on chipnr */ +static void fsmc_select_chip(struct mtd_info *mtd, int chipnr) +{ + struct nand_chip *chip = mtd->priv; + struct fsmc_nand_data *host; + + host = container_of(mtd, struct fsmc_nand_data, mtd); + + switch (chipnr) { + case -1: + chip->cmd_ctrl(mtd, NAND_CMD_NONE, 0 | NAND_CTRL_CHANGE); + break; + case 0: + case 1: + case 2: + case 3: + if (host->select_chip) + host->select_chip(chipnr, + chip->options & NAND_BUSWIDTH_16); + break; + + default: + BUG(); + } +} + +/* + * fsmc_cmd_ctrl - For facilitaing Hardware access + * This routine allows hardware specific access to control-lines(ALE,CLE) + */ +static void fsmc_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) +{ + struct nand_chip *this = mtd->priv; + struct fsmc_nand_data *host = container_of(mtd, + struct fsmc_nand_data, mtd); + struct fsmc_regs *regs = host->regs_va; + unsigned int bank = host->bank; + + if (ctrl & NAND_CTRL_CHANGE) { + if (ctrl & NAND_CLE) { + this->IO_ADDR_R = (void __iomem *)host->cmd_va; + this->IO_ADDR_W = (void __iomem *)host->cmd_va; + } else if (ctrl & NAND_ALE) { + this->IO_ADDR_R = (void __iomem *)host->addr_va; + this->IO_ADDR_W = (void __iomem *)host->addr_va; + } else { + this->IO_ADDR_R = (void __iomem *)host->data_va; + this->IO_ADDR_W = (void __iomem *)host->data_va; + } + + if (ctrl & NAND_NCE) { + writel(readl(®s->bank_regs[bank].pc) | FSMC_ENABLE, + ®s->bank_regs[bank].pc); + } else { + writel(readl(®s->bank_regs[bank].pc) & ~FSMC_ENABLE, + ®s->bank_regs[bank].pc); + } + } + + mb(); + + if (cmd != NAND_CMD_NONE) + writeb(cmd, this->IO_ADDR_W); +} + +/* + * fsmc_nand_setup - FSMC (Flexible Static Memory Controller) init routine + * + * This routine initializes timing parameters related to NAND memory access in + * FSMC registers + */ +static void __init fsmc_nand_setup(struct fsmc_regs *regs, uint32_t bank, + uint32_t busw) +{ + uint32_t value = FSMC_DEVTYPE_NAND | FSMC_ENABLE | FSMC_WAITON; + + if (busw) + writel(value | FSMC_DEVWID_16, ®s->bank_regs[bank].pc); + else + writel(value | FSMC_DEVWID_8, ®s->bank_regs[bank].pc); + + writel(readl(®s->bank_regs[bank].pc) | FSMC_TCLR_1 | FSMC_TAR_1, + ®s->bank_regs[bank].pc); + writel(FSMC_THIZ_1 | FSMC_THOLD_4 | FSMC_TWAIT_6 | FSMC_TSET_0, + ®s->bank_regs[bank].comm); + writel(FSMC_THIZ_1 | FSMC_THOLD_4 | FSMC_TWAIT_6 | FSMC_TSET_0, + ®s->bank_regs[bank].attrib); +} + +/* + * fsmc_enable_hwecc - Enables Hardware ECC through FSMC registers + */ +static void fsmc_enable_hwecc(struct mtd_info *mtd, int mode) +{ + struct fsmc_nand_data *host = container_of(mtd, + struct fsmc_nand_data, mtd); + struct fsmc_regs *regs = host->regs_va; + uint32_t bank = host->bank; + + writel(readl(®s->bank_regs[bank].pc) & ~FSMC_ECCPLEN_256, + ®s->bank_regs[bank].pc); + writel(readl(®s->bank_regs[bank].pc) & ~FSMC_ECCEN, + ®s->bank_regs[bank].pc); + writel(readl(®s->bank_regs[bank].pc) | FSMC_ECCEN, + ®s->bank_regs[bank].pc); +} + +/* + * fsmc_read_hwecc_ecc4 - Hardware ECC calculator for ecc4 option supported by + * FSMC. ECC is 13 bytes for 512 bytes of data (supports error correction upto + * max of 8-bits) + */ +static int fsmc_read_hwecc_ecc4(struct mtd_info *mtd, const uint8_t *data, + uint8_t *ecc) +{ + struct fsmc_nand_data *host = container_of(mtd, + struct fsmc_nand_data, mtd); + struct fsmc_regs *regs = host->regs_va; + uint32_t bank = host->bank; + uint32_t ecc_tmp; + unsigned long deadline = jiffies + FSMC_BUSY_WAIT_TIMEOUT; + + do { + if (readl(®s->bank_regs[bank].sts) & FSMC_CODE_RDY) + break; + else + cond_resched(); + } while (!time_after_eq(jiffies, deadline)); + + ecc_tmp = readl(®s->bank_regs[bank].ecc1); + ecc[0] = (uint8_t) (ecc_tmp >> 0); + ecc[1] = (uint8_t) (ecc_tmp >> 8); + ecc[2] = (uint8_t) (ecc_tmp >> 16); + ecc[3] = (uint8_t) (ecc_tmp >> 24); + + ecc_tmp = readl(®s->bank_regs[bank].ecc2); + ecc[4] = (uint8_t) (ecc_tmp >> 0); + ecc[5] = (uint8_t) (ecc_tmp >> 8); + ecc[6] = (uint8_t) (ecc_tmp >> 16); + ecc[7] = (uint8_t) (ecc_tmp >> 24); + + ecc_tmp = readl(®s->bank_regs[bank].ecc3); + ecc[8] = (uint8_t) (ecc_tmp >> 0); + ecc[9] = (uint8_t) (ecc_tmp >> 8); + ecc[10] = (uint8_t) (ecc_tmp >> 16); + ecc[11] = (uint8_t) (ecc_tmp >> 24); + + ecc_tmp = readl(®s->bank_regs[bank].sts); + ecc[12] = (uint8_t) (ecc_tmp >> 16); + + return 0; +} + +/* + * fsmc_read_hwecc_ecc1 - Hardware ECC calculator for ecc1 option supported by + * FSMC. ECC is 3 bytes for 512 bytes of data (supports error correction upto + * max of 1-bit) + */ +static int fsmc_read_hwecc_ecc1(struct mtd_info *mtd, const uint8_t *data, + uint8_t *ecc) +{ + struct fsmc_nand_data *host = container_of(mtd, + struct fsmc_nand_data, mtd); + struct fsmc_regs *regs = host->regs_va; + uint32_t bank = host->bank; + uint32_t ecc_tmp; + + ecc_tmp = readl(®s->bank_regs[bank].ecc1); + ecc[0] = (uint8_t) (ecc_tmp >> 0); + ecc[1] = (uint8_t) (ecc_tmp >> 8); + ecc[2] = (uint8_t) (ecc_tmp >> 16); + + return 0; +} + +/* + * fsmc_read_page_hwecc + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @page: page number to read + * + * This routine is needed for fsmc verison 8 as reading from NAND chip has to be + * performed in a strict sequence as follows: + * data(512 byte) -> ecc(13 byte) + * After this read, fsmc hardware generates and reports error data bits(upto a + * max of 8 bits) + */ +static int fsmc_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf, int page) +{ + struct fsmc_nand_data *host = container_of(mtd, + struct fsmc_nand_data, mtd); + struct fsmc_eccplace *ecc_place = host->ecc_place; + int i, j, s, stat, eccsize = chip->ecc.size; + int eccbytes = chip->ecc.bytes; + int eccsteps = chip->ecc.steps; + uint8_t *p = buf; + uint8_t *ecc_calc = chip->buffers->ecccalc; + uint8_t *ecc_code = chip->buffers->ecccode; + int off, len, group = 0; + /* + * ecc_oob is intentionally taken as uint16_t. In 16bit devices, we + * end up reading 14 bytes (7 words) from oob. The local array is + * to maintain word alignment + */ + uint16_t ecc_oob[7]; + uint8_t *oob = (uint8_t *)&ecc_oob[0]; + + for (i = 0, s = 0; s < eccsteps; s++, i += eccbytes, p += eccsize) { + + chip->cmdfunc(mtd, NAND_CMD_READ0, s * eccsize, page); + chip->ecc.hwctl(mtd, NAND_ECC_READ); + chip->read_buf(mtd, p, eccsize); + + for (j = 0; j < eccbytes;) { + off = ecc_place->eccplace[group].offset; + len = ecc_place->eccplace[group].length; + group++; + + /* + * length is intentionally kept a higher multiple of 2 + * to read at least 13 bytes even in case of 16 bit NAND + * devices + */ + len = roundup(len, 2); + chip->cmdfunc(mtd, NAND_CMD_READOOB, off, page); + chip->read_buf(mtd, oob + j, len); + j += len; + } + + memcpy(&ecc_code[i], oob, 13); + chip->ecc.calculate(mtd, p, &ecc_calc[i]); + + stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]); + if (stat < 0) + mtd->ecc_stats.failed++; + else + mtd->ecc_stats.corrected += stat; + } + + return 0; +} + +/* + * fsmc_correct_data + * @mtd: mtd info structure + * @dat: buffer of read data + * @read_ecc: ecc read from device spare area + * @calc_ecc: ecc calculated from read data + * + * calc_ecc is a 104 bit information containing maximum of 8 error + * offset informations of 13 bits each in 512 bytes of read data. + */ +static int fsmc_correct_data(struct mtd_info *mtd, uint8_t *dat, + uint8_t *read_ecc, uint8_t *calc_ecc) +{ + struct fsmc_nand_data *host = container_of(mtd, + struct fsmc_nand_data, mtd); + struct fsmc_regs *regs = host->regs_va; + unsigned int bank = host->bank; + uint16_t err_idx[8]; + uint64_t ecc_data[2]; + uint32_t num_err, i; + + /* The calculated ecc is actually the correction index in data */ + memcpy(ecc_data, calc_ecc, 13); + + /* + * ------------------- calc_ecc[] bit wise -----------|--13 bits--| + * |---idx[7]--|--.....-----|---idx[2]--||---idx[1]--||---idx[0]--| + * + * calc_ecc is a 104 bit information containing maximum of 8 error + * offset informations of 13 bits each. calc_ecc is copied into a + * uint64_t array and error offset indexes are populated in err_idx + * array + */ + for (i = 0; i < 8; i++) { + if (i == 4) { + err_idx[4] = ((ecc_data[1] & 0x1) << 12) | ecc_data[0]; + ecc_data[1] >>= 1; + continue; + } + err_idx[i] = (ecc_data[i/4] & 0x1FFF); + ecc_data[i/4] >>= 13; + } + + num_err = (readl(®s->bank_regs[bank].sts) >> 10) & 0xF; + + if (num_err == 0xF) + return -EBADMSG; + + i = 0; + while (num_err--) { + change_bit(0, (unsigned long *)&err_idx[i]); + change_bit(1, (unsigned long *)&err_idx[i]); + + if (err_idx[i] <= 512 * 8) { + change_bit(err_idx[i], (unsigned long *)dat); + i++; + } + } + return i; +} + +/* + * fsmc_nand_probe - Probe function + * @pdev: platform device structure + */ +static int __init fsmc_nand_probe(struct platform_device *pdev) +{ + struct fsmc_nand_platform_data *pdata = dev_get_platdata(&pdev->dev); + struct fsmc_nand_data *host; + struct mtd_info *mtd; + struct nand_chip *nand; + struct fsmc_regs *regs; + struct resource *res; + int nr_parts, ret = 0; + + if (!pdata) { + dev_err(&pdev->dev, "platform data is NULL\n"); + return -EINVAL; + } + + /* Allocate memory for the device structure (and zero it) */ + host = kzalloc(sizeof(*host), GFP_KERNEL); + if (!host) { + dev_err(&pdev->dev, "failed to allocate device structure\n"); + return -ENOMEM; + } + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand_data"); + if (!res) { + ret = -EIO; + goto err_probe1; + } + + host->resdata = request_mem_region(res->start, resource_size(res), + pdev->name); + if (!host->resdata) { + ret = -EIO; + goto err_probe1; + } + + host->data_va = ioremap(res->start, resource_size(res)); + if (!host->data_va) { + ret = -EIO; + goto err_probe1; + } + + host->resaddr = request_mem_region(res->start + PLAT_NAND_ALE, + resource_size(res), pdev->name); + if (!host->resaddr) { + ret = -EIO; + goto err_probe1; + } + + host->addr_va = ioremap(res->start + PLAT_NAND_ALE, resource_size(res)); + if (!host->addr_va) { + ret = -EIO; + goto err_probe1; + } + + host->rescmd = request_mem_region(res->start + PLAT_NAND_CLE, + resource_size(res), pdev->name); + if (!host->rescmd) { + ret = -EIO; + goto err_probe1; + } + + host->cmd_va = ioremap(res->start + PLAT_NAND_CLE, resource_size(res)); + if (!host->cmd_va) { + ret = -EIO; + goto err_probe1; + } + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fsmc_regs"); + if (!res) { + ret = -EIO; + goto err_probe1; + } + + host->resregs = request_mem_region(res->start, resource_size(res), + pdev->name); + if (!host->resregs) { + ret = -EIO; + goto err_probe1; + } + + host->regs_va = ioremap(res->start, resource_size(res)); + if (!host->regs_va) { + ret = -EIO; + goto err_probe1; + } + + host->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(host->clk)) { + dev_err(&pdev->dev, "failed to fetch block clock\n"); + ret = PTR_ERR(host->clk); + host->clk = NULL; + goto err_probe1; + } + + ret = clk_enable(host->clk); + if (ret) + goto err_probe1; + + host->bank = pdata->bank; + host->select_chip = pdata->select_bank; + regs = host->regs_va; + + /* Link all private pointers */ + mtd = &host->mtd; + nand = &host->nand; + mtd->priv = nand; + nand->priv = host; + + host->mtd.owner = THIS_MODULE; + nand->IO_ADDR_R = host->data_va; + nand->IO_ADDR_W = host->data_va; + nand->cmd_ctrl = fsmc_cmd_ctrl; + nand->chip_delay = 30; + + nand->ecc.mode = NAND_ECC_HW; + nand->ecc.hwctl = fsmc_enable_hwecc; + nand->ecc.size = 512; + nand->options = pdata->options; + nand->select_chip = fsmc_select_chip; + + if (pdata->width == FSMC_NAND_BW16) + nand->options |= NAND_BUSWIDTH_16; + + fsmc_nand_setup(regs, host->bank, nand->options & NAND_BUSWIDTH_16); + + if (get_fsmc_version(host->regs_va) == FSMC_VER8) { + nand->ecc.read_page = fsmc_read_page_hwecc; + nand->ecc.calculate = fsmc_read_hwecc_ecc4; + nand->ecc.correct = fsmc_correct_data; + nand->ecc.bytes = 13; + } else { + nand->ecc.calculate = fsmc_read_hwecc_ecc1; + nand->ecc.correct = nand_correct_data; + nand->ecc.bytes = 3; + } + + /* + * Scan to find existance of the device + */ + if (nand_scan_ident(&host->mtd, 1, NULL)) { + ret = -ENXIO; + dev_err(&pdev->dev, "No NAND Device found!\n"); + goto err_probe; + } + + if (get_fsmc_version(host->regs_va) == FSMC_VER8) { + if (host->mtd.writesize == 512) { + nand->ecc.layout = &fsmc_ecc4_sp_layout; + host->ecc_place = &fsmc_ecc4_sp_place; + } else { + nand->ecc.layout = &fsmc_ecc4_lp_layout; + host->ecc_place = &fsmc_ecc4_lp_place; + } + } else { + nand->ecc.layout = &fsmc_ecc1_layout; + } + + /* Second stage of scan to fill MTD data-structures */ + if (nand_scan_tail(&host->mtd)) { + ret = -ENXIO; + goto err_probe; + } + + /* + * The partition information can is accessed by (in the same precedence) + * + * command line through Bootloader, + * platform data, + * default partition information present in driver. + */ +#ifdef CONFIG_MTD_PARTITIONS +#ifdef CONFIG_MTD_CMDLINE_PARTS + /* + * Check if partition info passed via command line + */ + host->mtd.name = "nand"; + nr_parts = parse_mtd_partitions(&host->mtd, part_probes, + &host->partitions, 0); + if (nr_parts > 0) { + host->nr_partitions = nr_parts; + } else { +#endif + /* + * Check if partition info passed via command line + */ + if (pdata->partitions) { + host->partitions = pdata->partitions; + host->nr_partitions = pdata->nr_partitions; + } else { + struct mtd_partition *partition; + int i; + + /* Select the default partitions info */ + switch (host->mtd.size) { + case 0x01000000: + case 0x02000000: + case 0x04000000: + host->partitions = partition_info_16KB_blk; + host->nr_partitions = + sizeof(partition_info_16KB_blk) / + sizeof(struct mtd_partition); + break; + case 0x08000000: + case 0x10000000: + case 0x20000000: + case 0x40000000: + host->partitions = partition_info_128KB_blk; + host->nr_partitions = + sizeof(partition_info_128KB_blk) / + sizeof(struct mtd_partition); + break; + default: + ret = -ENXIO; + pr_err("Unsupported NAND size\n"); + goto err_probe; + } + + partition = host->partitions; + for (i = 0; i < host->nr_partitions; i++, partition++) { + if (partition->size == 0) { + partition->size = host->mtd.size - + partition->offset; + break; + } + } + } +#ifdef CONFIG_MTD_CMDLINE_PARTS + } +#endif + + if (host->partitions) { + ret = add_mtd_partitions(&host->mtd, host->partitions, + host->nr_partitions); + if (ret) + goto err_probe; + } +#else + dev_info(&pdev->dev, "Registering %s as whole device\n", mtd->name); + if (!add_mtd_device(mtd)) { + ret = -ENXIO; + goto err_probe; + } +#endif + + platform_set_drvdata(pdev, host); + dev_info(&pdev->dev, "FSMC NAND driver registration successful\n"); + return 0; + +err_probe: + clk_disable(host->clk); +err_probe1: + if (host->clk) + clk_put(host->clk); + if (host->regs_va) + iounmap(host->regs_va); + if (host->resregs) + release_mem_region(host->resregs->start, + resource_size(host->resregs)); + if (host->cmd_va) + iounmap(host->cmd_va); + if (host->rescmd) + release_mem_region(host->rescmd->start, + resource_size(host->rescmd)); + if (host->addr_va) + iounmap(host->addr_va); + if (host->resaddr) + release_mem_region(host->resaddr->start, + resource_size(host->resaddr)); + if (host->data_va) + iounmap(host->data_va); + if (host->resdata) + release_mem_region(host->resdata->start, + resource_size(host->resdata)); + + kfree(host); + return ret; +} + +/* + * Clean up routine + */ +static int fsmc_nand_remove(struct platform_device *pdev) +{ + struct fsmc_nand_data *host = platform_get_drvdata(pdev); + + platform_set_drvdata(pdev, NULL); + + if (host) { +#ifdef CONFIG_MTD_PARTITIONS + del_mtd_partitions(&host->mtd); +#else + del_mtd_device(&host->mtd); +#endif + clk_disable(host->clk); + clk_put(host->clk); + + iounmap(host->regs_va); + release_mem_region(host->resregs->start, + resource_size(host->resregs)); + iounmap(host->cmd_va); + release_mem_region(host->rescmd->start, + resource_size(host->rescmd)); + iounmap(host->addr_va); + release_mem_region(host->resaddr->start, + resource_size(host->resaddr)); + iounmap(host->data_va); + release_mem_region(host->resdata->start, + resource_size(host->resdata)); + + kfree(host); + } + return 0; +} + +#ifdef CONFIG_PM +static int fsmc_nand_suspend(struct device *dev) +{ + struct fsmc_nand_data *host = dev_get_drvdata(dev); + if (host) + clk_disable(host->clk); + return 0; +} + +static int fsmc_nand_resume(struct device *dev) +{ + struct fsmc_nand_data *host = dev_get_drvdata(dev); + if (host) + clk_enable(host->clk); + return 0; +} + +static const struct dev_pm_ops fsmc_nand_pm_ops = { + .suspend = fsmc_nand_suspend, + .resume = fsmc_nand_resume, +}; +#endif + +static struct platform_driver fsmc_nand_driver = { + .remove = fsmc_nand_remove, + .driver = { + .owner = THIS_MODULE, + .name = "fsmc-nand", +#ifdef CONFIG_PM + .pm = &fsmc_nand_pm_ops, +#endif + }, +}; + +static int __init fsmc_nand_init(void) +{ + return platform_driver_probe(&fsmc_nand_driver, + fsmc_nand_probe); +} +module_init(fsmc_nand_init); + +static void __exit fsmc_nand_exit(void) +{ + platform_driver_unregister(&fsmc_nand_driver); +} +module_exit(fsmc_nand_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Vipin Kumar , Ashish Priyadarshi"); +MODULE_DESCRIPTION("NAND driver for SPEAr Platforms"); -- cgit v1.2.3 From 5daa7b21496aebf057c12be03038e7220e33353b Mon Sep 17 00:00:00 2001 From: Roman Tereshonkov Date: Fri, 17 Sep 2010 13:31:41 +0300 Subject: mtd: prepare partition add and del functions for ioctl requests mtd_is_master, mtd_add_partition and mtd_del_partition functions are added to give the possibility of partition manipulation by ioctl request. The old partition add function is modified to fit the dynamic allocation. Signed-off-by: Roman Tereshonkov Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/mtdpart.c | 154 ++++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 136 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index dc6558568876..79e3689f1e16 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -29,9 +29,11 @@ #include #include #include +#include /* Our partition linked list */ static LIST_HEAD(mtd_partitions); +static DEFINE_MUTEX(mtd_partitions_mutex); /* Our partition node structure */ struct mtd_part { @@ -326,6 +328,12 @@ static int part_block_markbad(struct mtd_info *mtd, loff_t ofs) return res; } +static inline void free_partition(struct mtd_part *p) +{ + kfree(p->mtd.name); + kfree(p); +} + /* * This function unregisters and destroy all slave MTD objects which are * attached to the given master MTD object. @@ -334,33 +342,42 @@ static int part_block_markbad(struct mtd_info *mtd, loff_t ofs) int del_mtd_partitions(struct mtd_info *master) { struct mtd_part *slave, *next; + int ret, err = 0; + mutex_lock(&mtd_partitions_mutex); list_for_each_entry_safe(slave, next, &mtd_partitions, list) if (slave->master == master) { + ret = del_mtd_device(&slave->mtd); + if (ret < 0) { + err = ret; + continue; + } list_del(&slave->list); - del_mtd_device(&slave->mtd); - kfree(slave); + free_partition(slave); } + mutex_unlock(&mtd_partitions_mutex); - return 0; + return err; } EXPORT_SYMBOL(del_mtd_partitions); -static struct mtd_part *add_one_partition(struct mtd_info *master, - const struct mtd_partition *part, int partno, - uint64_t cur_offset) +static struct mtd_part *allocate_partition(struct mtd_info *master, + const struct mtd_partition *part, int partno, + uint64_t cur_offset) { struct mtd_part *slave; + char *name; /* allocate the partition structure */ slave = kzalloc(sizeof(*slave), GFP_KERNEL); - if (!slave) { + name = kstrdup(part->name, GFP_KERNEL); + if (!name || !slave) { printk(KERN_ERR"memory allocation error while creating partitions for \"%s\"\n", - master->name); - del_mtd_partitions(master); - return NULL; + master->name); + kfree(name); + kfree(slave); + return ERR_PTR(-ENOMEM); } - list_add(&slave->list, &mtd_partitions); /* set up the MTD object for this partition */ slave->mtd.type = master->type; @@ -371,7 +388,7 @@ static struct mtd_part *add_one_partition(struct mtd_info *master, slave->mtd.oobavail = master->oobavail; slave->mtd.subpage_sft = master->subpage_sft; - slave->mtd.name = part->name; + slave->mtd.name = name; slave->mtd.owner = master->owner; slave->mtd.backing_dev_info = master->backing_dev_info; @@ -518,12 +535,89 @@ static struct mtd_part *add_one_partition(struct mtd_info *master, } out_register: - /* register our partition */ - add_mtd_device(&slave->mtd); - return slave; } +int mtd_add_partition(struct mtd_info *master, char *name, + long long offset, long long length) +{ + struct mtd_partition part; + struct mtd_part *p, *new; + uint64_t start, end; + int ret = 0; + + /* the direct offset is expected */ + if (offset == MTDPART_OFS_APPEND || + offset == MTDPART_OFS_NXTBLK) + return -EINVAL; + + if (length == MTDPART_SIZ_FULL) + length = master->size - offset; + + if (length <= 0) + return -EINVAL; + + part.name = name; + part.size = length; + part.offset = offset; + part.mask_flags = 0; + part.ecclayout = NULL; + + new = allocate_partition(master, &part, -1, offset); + if (IS_ERR(new)) + return PTR_ERR(new); + + start = offset; + end = offset + length; + + mutex_lock(&mtd_partitions_mutex); + list_for_each_entry(p, &mtd_partitions, list) + if (p->master == master) { + if ((start >= p->offset) && + (start < (p->offset + p->mtd.size))) + goto err_inv; + + if ((end >= p->offset) && + (end < (p->offset + p->mtd.size))) + goto err_inv; + } + + list_add(&new->list, &mtd_partitions); + mutex_unlock(&mtd_partitions_mutex); + + add_mtd_device(&new->mtd); + + return ret; +err_inv: + mutex_unlock(&mtd_partitions_mutex); + free_partition(new); + return -EINVAL; +} +EXPORT_SYMBOL_GPL(mtd_add_partition); + +int mtd_del_partition(struct mtd_info *master, int partno) +{ + struct mtd_part *slave, *next; + int ret = -EINVAL; + + mutex_lock(&mtd_partitions_mutex); + list_for_each_entry_safe(slave, next, &mtd_partitions, list) + if ((slave->master == master) && + (slave->mtd.index == partno)) { + ret = del_mtd_device(&slave->mtd); + if (ret < 0) + break; + + list_del(&slave->list); + free_partition(slave); + break; + } + mutex_unlock(&mtd_partitions_mutex); + + return ret; +} +EXPORT_SYMBOL_GPL(mtd_del_partition); + /* * This function, given a master MTD object and a partition table, creates * and registers slave MTD objects which are bound to the master according to @@ -544,9 +638,16 @@ int add_mtd_partitions(struct mtd_info *master, printk(KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name); for (i = 0; i < nbparts; i++) { - slave = add_one_partition(master, parts + i, i, cur_offset); - if (!slave) - return -ENOMEM; + slave = allocate_partition(master, parts + i, i, cur_offset); + if (IS_ERR(slave)) + return PTR_ERR(slave); + + mutex_lock(&mtd_partitions_mutex); + list_add(&slave->list, &mtd_partitions); + mutex_unlock(&mtd_partitions_mutex); + + add_mtd_device(&slave->mtd); + cur_offset = slave->offset + slave->mtd.size; } @@ -618,3 +719,20 @@ int parse_mtd_partitions(struct mtd_info *master, const char **types, return ret; } EXPORT_SYMBOL_GPL(parse_mtd_partitions); + +int mtd_is_master(struct mtd_info *mtd) +{ + struct mtd_part *part; + int nopart = 0; + + mutex_lock(&mtd_partitions_mutex); + list_for_each_entry(part, &mtd_partitions, list) + if (&part->mtd == mtd) { + nopart = 1; + break; + } + mutex_unlock(&mtd_partitions_mutex); + + return nopart; +} +EXPORT_SYMBOL_GPL(mtd_is_master); -- cgit v1.2.3 From d0f7959e2b708d775c3b6b53cc6a8abb8ff0a00b Mon Sep 17 00:00:00 2001 From: Roman Tereshonkov Date: Fri, 17 Sep 2010 13:31:42 +0300 Subject: mtd: add BLKPG API based repartition support Add support for mtd repartition based on the block device BLKPG interface: BLKPG_ADD_PARTITION - for partition creation; BLKPG_DEL_PARTITION - for partition delete The usage is based on BLKPG ioctl called with struct blkpg_ioctl_arg argument which includes the reference to struct blkpg_partition discribing the partition offset and length. Disadvantage: there is no implementation for mtd flags control. The flags are always borrowed from the master device. Signed-off-by: Roman Tereshonkov Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/mtdchar.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 58 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 5895de7018d4..b7ed09c57903 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -30,8 +30,9 @@ #include #include #include - +#include #include +#include #include #include @@ -510,6 +511,45 @@ static int shrink_ecclayout(const struct nand_ecclayout *from, return 0; } +#ifdef CONFIG_MTD_PARTITIONS +static int mtd_blkpg_ioctl(struct mtd_info *mtd, + struct blkpg_ioctl_arg __user *arg) +{ + struct blkpg_ioctl_arg a; + struct blkpg_partition p; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + /* Only master mtd device must be used to control partitions */ + if (!mtd_is_master(mtd)) + return -EINVAL; + + if (copy_from_user(&a, arg, sizeof(struct blkpg_ioctl_arg))) + return -EFAULT; + + if (copy_from_user(&p, a.data, sizeof(struct blkpg_partition))) + return -EFAULT; + + switch (a.op) { + case BLKPG_ADD_PARTITION: + + return mtd_add_partition(mtd, p.devname, p.start, p.length); + + case BLKPG_DEL_PARTITION: + + if (p.pno < 0) + return -EINVAL; + + return mtd_del_partition(mtd, p.pno); + + default: + return -EINVAL; + } +} +#endif + + static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) { struct mtd_file_info *mfi = file->private_data; @@ -900,6 +940,22 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) break; } +#ifdef CONFIG_MTD_PARTITIONS + case BLKPG: + { + ret = mtd_blkpg_ioctl(mtd, + (struct blkpg_ioctl_arg __user *)arg); + break; + } + + case BLKRRPART: + { + /* No reread partition feature. Just return ok */ + ret = 0; + break; + } +#endif + default: ret = -ENOTTY; } @@ -1078,7 +1134,7 @@ static int mtd_inodefs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data, struct vfsmount *mnt) { - return get_sb_pseudo(fs_type, "mtd_inode:", NULL, MTD_INODE_FS_MAGIC, + return get_sb_pseudo(fs_type, "mtd_inode:", NULL, MTD_INODE_FS_MAGIC, mnt); } -- cgit v1.2.3 From 12a40a57f762f569f58a393437d8c13864db390a Mon Sep 17 00:00:00 2001 From: Huang Shijie Date: Mon, 27 Sep 2010 10:43:53 +0800 Subject: mtd: add init_size hook for NAND driver Not all the NAND devices have all the information in additional id bytes. So add a hook in the nand_chip{} is a good method to calculate the right value of oobsize, erasesize and so on. Without the hook,you will get the wrong value, and you have to hack in the ->scan_bbt() to change the wrong value which make the code mess. Signed-off-by: Huang Shijie Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 0b70c175999c..53f4e41836f1 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2976,8 +2976,10 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, chip->chipsize = (uint64_t)type->chipsize << 20; - /* Newer devices have all the information in additional id bytes */ - if (!type->pagesize) { + if (!type->pagesize && chip->init_size) { + /* set the pagesize, oobsize, erasesize by the driver*/ + busw = chip->init_size(mtd, chip, id_data); + } else if (!type->pagesize) { int extid; /* The 3rd id byte holds MLC / multichip data */ chip->cellinfo = id_data[2]; -- cgit v1.2.3 From ebe8a642f50a0020bed317afcde1f9d2a9da429b Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Mon, 27 Sep 2010 16:25:17 +0900 Subject: mtd: OneNAND: S5PC110: Add timeout to prevent the endless loop There's no case timeout but add it for some H/W problem or wrong codes implementation Signed-off-by: Kyungmin Park Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/onenand/samsung.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/onenand/samsung.c b/drivers/mtd/onenand/samsung.c index 7913a921b08b..b80128036a28 100644 --- a/drivers/mtd/onenand/samsung.c +++ b/drivers/mtd/onenand/samsung.c @@ -535,6 +535,7 @@ static int s5pc110_dma_ops(void *dst, void *src, size_t count, int direction) { void __iomem *base = onenand->dma_addr; int status; + unsigned long timeout; writel(src, base + S5PC110_DMA_SRC_ADDR); writel(dst, base + S5PC110_DMA_DST_ADDR); @@ -552,6 +553,13 @@ static int s5pc110_dma_ops(void *dst, void *src, size_t count, int direction) writel(S5PC110_DMA_TRANS_CMD_TR, base + S5PC110_DMA_TRANS_CMD); + /* + * There's no exact timeout values at Spec. + * In real case it takes under 1 msec. + * So 20 msecs are enough. + */ + timeout = jiffies + msecs_to_jiffies(20); + do { status = readl(base + S5PC110_DMA_TRANS_STATUS); if (status & S5PC110_DMA_TRANS_STATUS_TE) { @@ -559,7 +567,8 @@ static int s5pc110_dma_ops(void *dst, void *src, size_t count, int direction) base + S5PC110_DMA_TRANS_CMD); return -EIO; } - } while (!(status & S5PC110_DMA_TRANS_STATUS_TD)); + } while (!(status & S5PC110_DMA_TRANS_STATUS_TD) && + time_before(jiffies, timeout)); writel(S5PC110_DMA_TRANS_CMD_TDC, base + S5PC110_DMA_TRANS_CMD); -- cgit v1.2.3 From c76268021e04e4313cd3a32242826f6a93388e2d Mon Sep 17 00:00:00 2001 From: Rohit Hassan Sathyanarayan Date: Mon, 27 Sep 2010 16:02:10 +0530 Subject: mtd: MLC device check in OneNAND driver The MLC NAND Flash differs from the SLC NAND flash in functioning and the cell structure. Therefore we are considering it as a different Flash type. Signed-off-by: Rohit H.S Signed-off-by: Raghav Gupta Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/onenand/onenand_base.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index a2bb520286f8..33e0dbb0a96d 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -4027,7 +4027,7 @@ int onenand_scan(struct mtd_info *mtd, int maxchips) mtd->ecclayout = this->ecclayout; /* Fill in remaining MTD driver data */ - mtd->type = MTD_NANDFLASH; + mtd->type = ONENAND_IS_MLC(this) ? MTD_MLCNANDFLASH : MTD_NANDFLASH; mtd->flags = MTD_CAP_NANDFLASH; mtd->erase = onenand_erase; mtd->point = NULL; -- cgit v1.2.3 From aa6d1c0e15948894978b342da45d91f5a2af9933 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Tue, 28 Sep 2010 19:27:00 +0900 Subject: mtd: OneNAND: S5PC100: Only S5PC110 use the command map method After S5PC110 use the generic method for OneNAND. Signed-off-by: Kyungmin Park Signed-off-by: David Woodhouse --- drivers/mtd/onenand/samsung.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/onenand/samsung.c b/drivers/mtd/onenand/samsung.c index b80128036a28..285085a93c31 100644 --- a/drivers/mtd/onenand/samsung.c +++ b/drivers/mtd/onenand/samsung.c @@ -58,7 +58,7 @@ enum soc_type { #define MAP_11 (0x3) #define S3C64XX_CMD_MAP_SHIFT 24 -#define S5PC1XX_CMD_MAP_SHIFT 26 +#define S5PC100_CMD_MAP_SHIFT 26 #define S3C6400_FBA_SHIFT 10 #define S3C6400_FPA_SHIFT 4 @@ -191,7 +191,7 @@ static unsigned int s3c64xx_cmd_map(unsigned type, unsigned val) static unsigned int s5pc1xx_cmd_map(unsigned type, unsigned val) { - return (type << S5PC1XX_CMD_MAP_SHIFT) | val; + return (type << S5PC100_CMD_MAP_SHIFT) | val; } static unsigned int s3c6400_mem_addr(int fba, int fpa, int fsa) -- cgit v1.2.3 From dcf08227e964a53a2cb39130b74842c7dcb6adde Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Tue, 28 Sep 2010 19:27:10 +0900 Subject: mtd: OneNAND: S5PC110: Fix wrong DMA handling when HIGHMEM When use HIGHMEM, dma_map_single doesn't get the proper DMA address. So use the dma_map_page in this case. Signed-off-by: Kyungmin Park Signed-off-by: David Woodhouse --- drivers/mtd/onenand/samsung.c | 29 ++++++++++++++++++----------- 1 file changed, 18 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/onenand/samsung.c b/drivers/mtd/onenand/samsung.c index 285085a93c31..afdb4c544132 100644 --- a/drivers/mtd/onenand/samsung.c +++ b/drivers/mtd/onenand/samsung.c @@ -582,7 +582,8 @@ static int s5pc110_read_bufferram(struct mtd_info *mtd, int area, void __iomem *p; void *buf = (void *) buffer; dma_addr_t dma_src, dma_dst; - int err; + int err, page_dma = 0; + struct device *dev = &onenand->pdev->dev; p = this->base + area; if (ONENAND_CURRENT_BUFFERRAM(this)) { @@ -606,21 +607,27 @@ static int s5pc110_read_bufferram(struct mtd_info *mtd, int area, page = vmalloc_to_page(buf); if (!page) goto normal; - buf = page_address(page) + ((size_t) buf & ~PAGE_MASK); - } - /* DMA routine */ - dma_src = onenand->phys_base + (p - this->base); - dma_dst = dma_map_single(&onenand->pdev->dev, - buf, count, DMA_FROM_DEVICE); - if (dma_mapping_error(&onenand->pdev->dev, dma_dst)) { - dev_err(&onenand->pdev->dev, - "Couldn't map a %d byte buffer for DMA\n", count); + page_dma = 1; + /* DMA routine */ + dma_src = onenand->phys_base + (p - this->base); + dma_dst = dma_map_page(dev, page, 0, count, DMA_FROM_DEVICE); + } else { + /* DMA routine */ + dma_src = onenand->phys_base + (p - this->base); + dma_dst = dma_map_single(dev, buf, count, DMA_FROM_DEVICE); + } + if (dma_mapping_error(dev, dma_dst)) { + dev_err(dev, "Couldn't map a %d byte buffer for DMA\n", count); goto normal; } err = s5pc110_dma_ops((void *) dma_dst, (void *) dma_src, count, S5PC110_DMA_DIR_READ); - dma_unmap_single(&onenand->pdev->dev, dma_dst, count, DMA_FROM_DEVICE); + + if (page_dma) + dma_unmap_page(dev, dma_dst, count, DMA_FROM_DEVICE); + else + dma_unmap_single(dev, dma_dst, count, DMA_FROM_DEVICE); if (!err) return 0; -- cgit v1.2.3 From e23abf4b774322cbeb3f15cb95756544a64dda5e Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Tue, 28 Sep 2010 19:27:15 +0900 Subject: mtd: OneNAND: S5PC110: Implement DMA interrupt method Implement DMA interrupt method. previous time it polls the DMA status. It can reduce the CPU power but decrease the performance a little. Signed-off-by: Kyungmin Park Signed-off-by: David Woodhouse --- drivers/mtd/onenand/samsung.c | 85 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 84 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/onenand/samsung.c b/drivers/mtd/onenand/samsung.c index afdb4c544132..214ed1e763b6 100644 --- a/drivers/mtd/onenand/samsung.c +++ b/drivers/mtd/onenand/samsung.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include @@ -81,6 +82,17 @@ enum soc_type { #define S5PC110_DMA_TRANS_CMD 0x418 #define S5PC110_DMA_TRANS_STATUS 0x41C #define S5PC110_DMA_TRANS_DIR 0x420 +#define S5PC110_INTC_DMA_CLR 0x1004 +#define S5PC110_INTC_ONENAND_CLR 0x1008 +#define S5PC110_INTC_DMA_MASK 0x1024 +#define S5PC110_INTC_ONENAND_MASK 0x1028 +#define S5PC110_INTC_DMA_PEND 0x1044 +#define S5PC110_INTC_ONENAND_PEND 0x1048 +#define S5PC110_INTC_DMA_STATUS 0x1064 +#define S5PC110_INTC_ONENAND_STATUS 0x1068 + +#define S5PC110_INTC_DMA_TD (1 << 24) +#define S5PC110_INTC_DMA_TE (1 << 16) #define S5PC110_DMA_CFG_SINGLE (0x0 << 16) #define S5PC110_DMA_CFG_4BURST (0x2 << 16) @@ -134,6 +146,7 @@ struct s3c_onenand { void __iomem *dma_addr; struct resource *dma_res; unsigned long phys_base; + struct completion complete; #ifdef CONFIG_MTD_PARTITIONS struct mtd_partition *parts; #endif @@ -531,7 +544,9 @@ static int onenand_write_bufferram(struct mtd_info *mtd, int area, return 0; } -static int s5pc110_dma_ops(void *dst, void *src, size_t count, int direction) +static int (*s5pc110_dma_ops)(void *dst, void *src, size_t count, int direction); + +static int s5pc110_dma_poll(void *dst, void *src, size_t count, int direction) { void __iomem *base = onenand->dma_addr; int status; @@ -575,6 +590,60 @@ static int s5pc110_dma_ops(void *dst, void *src, size_t count, int direction) return 0; } +static irqreturn_t s5pc110_onenand_irq(int irq, void *data) +{ + void __iomem *base = onenand->dma_addr; + int status, cmd = 0; + + status = readl(base + S5PC110_INTC_DMA_STATUS); + + if (likely(status & S5PC110_INTC_DMA_TD)) + cmd = S5PC110_DMA_TRANS_CMD_TDC; + + if (unlikely(status & S5PC110_INTC_DMA_TE)) + cmd = S5PC110_DMA_TRANS_CMD_TEC; + + writel(cmd, base + S5PC110_DMA_TRANS_CMD); + writel(status, base + S5PC110_INTC_DMA_CLR); + + if (!onenand->complete.done) + complete(&onenand->complete); + + return IRQ_HANDLED; +} + +static int s5pc110_dma_irq(void *dst, void *src, size_t count, int direction) +{ + void __iomem *base = onenand->dma_addr; + int status; + + status = readl(base + S5PC110_INTC_DMA_MASK); + if (status) { + status &= ~(S5PC110_INTC_DMA_TD | S5PC110_INTC_DMA_TE); + writel(status, base + S5PC110_INTC_DMA_MASK); + } + + writel(src, base + S5PC110_DMA_SRC_ADDR); + writel(dst, base + S5PC110_DMA_DST_ADDR); + + if (direction == S5PC110_DMA_DIR_READ) { + writel(S5PC110_DMA_SRC_CFG_READ, base + S5PC110_DMA_SRC_CFG); + writel(S5PC110_DMA_DST_CFG_READ, base + S5PC110_DMA_DST_CFG); + } else { + writel(S5PC110_DMA_SRC_CFG_WRITE, base + S5PC110_DMA_SRC_CFG); + writel(S5PC110_DMA_DST_CFG_WRITE, base + S5PC110_DMA_DST_CFG); + } + + writel(count, base + S5PC110_DMA_TRANS_SIZE); + writel(direction, base + S5PC110_DMA_TRANS_DIR); + + writel(S5PC110_DMA_TRANS_CMD_TR, base + S5PC110_DMA_TRANS_CMD); + + wait_for_completion_timeout(&onenand->complete, msecs_to_jiffies(20)); + + return 0; +} + static int s5pc110_read_bufferram(struct mtd_info *mtd, int area, unsigned char *buffer, int offset, size_t count) { @@ -919,6 +988,20 @@ static int s3c_onenand_probe(struct platform_device *pdev) } onenand->phys_base = onenand->base_res->start; + + s5pc110_dma_ops = s5pc110_dma_poll; + /* Interrupt support */ + r = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (r) { + init_completion(&onenand->complete); + s5pc110_dma_ops = s5pc110_dma_irq; + err = request_irq(r->start, s5pc110_onenand_irq, + IRQF_SHARED, "onenand", &onenand); + if (err) { + dev_err(&pdev->dev, "failed to get irq\n"); + goto scan_failed; + } + } } if (onenand_scan(mtd, 1)) { -- cgit v1.2.3 From 861fae1818db2ef09e6f3a836816fb1c2c402666 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Wed, 29 Sep 2010 14:32:05 +0900 Subject: mtd: OneNAND: S5PC210 OneNAND support S5PC210 has the same OneNAND controller as S5PC110 Signed-off-by: Kyungmin Park Signed-off-by: David Woodhouse --- drivers/mtd/onenand/Kconfig | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/onenand/Kconfig b/drivers/mtd/onenand/Kconfig index 3f32289fdbb5..4dbd0f58eebf 100644 --- a/drivers/mtd/onenand/Kconfig +++ b/drivers/mtd/onenand/Kconfig @@ -32,10 +32,11 @@ config MTD_ONENAND_OMAP2 config MTD_ONENAND_SAMSUNG tristate "OneNAND on Samsung SOC controller support" - depends on ARCH_S3C64XX || ARCH_S5PC100 || ARCH_S5PV210 + depends on ARCH_S3C64XX || ARCH_S5PC100 || ARCH_S5PV210 || ARCH_S5PV310 help - Support for a OneNAND flash device connected to an Samsung SOC - S3C64XX/S5PC1XX controller. + Support for a OneNAND flash device connected to an Samsung SOC. + S3C64XX/S5PC100 use command mapping method. + S5PC110/S5PC210 use generic OneNAND method. config MTD_ONENAND_OTP bool "OneNAND OTP Support" -- cgit v1.2.3 From cda320915db00a07e5c4cdfc79806c3b80c0c7f2 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Wed, 29 Sep 2010 19:43:50 +0200 Subject: mtd: nand: use ALIGN where possible Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_bbt.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 5fedf4a74f16..a2a4e179a355 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -737,8 +737,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, /* Calc length */ len = (size_t) (numblocks >> sft); /* Make it page aligned ! */ - len = (len + (mtd->writesize - 1)) & - ~(mtd->writesize - 1); + len = ALIGN(len, mtd->writesize); /* Preset the buffer with 0xff */ memset(buf, 0xff, len + (len >> this->page_shift)* mtd->oobsize); -- cgit v1.2.3 From df5b4e343c52fcdc54db3f9d07068c98cda6007b Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Wed, 29 Sep 2010 19:43:51 +0200 Subject: mtd: nand: pull in td into read_bbt() No code change. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_bbt.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index a2a4e179a355..587297e43554 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -161,21 +161,22 @@ static int check_short_pattern(uint8_t *buf, struct nand_bbt_descr *td) * @buf: temporary buffer * @page: the starting page * @num: the number of bbt descriptors to read - * @bits: number of bits per block + * @td: the bbt describtion table * @offs: offset in the memory table - * @reserved_block_code: Pattern to identify reserved blocks * * Read the bad block table starting from page. * */ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, - int bits, int offs, int reserved_block_code) + struct nand_bbt_descr *td, int offs) { int res, i, j, act = 0; struct nand_chip *this = mtd->priv; size_t retlen, len, totlen; loff_t from; + int bits = td->options & NAND_BBT_NRBITS_MSK; uint8_t msk = (uint8_t) ((1 << bits) - 1); + int reserved_block_code = td->reserved_block_code; totlen = (num * bits) >> 3; from = ((loff_t) page) << this->page_shift; @@ -238,20 +239,21 @@ static int read_abs_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc { struct nand_chip *this = mtd->priv; int res = 0, i; - int bits; - bits = td->options & NAND_BBT_NRBITS_MSK; if (td->options & NAND_BBT_PERCHIP) { int offs = 0; for (i = 0; i < this->numchips; i++) { if (chip == -1 || chip == i) - res = read_bbt (mtd, buf, td->pages[i], this->chipsize >> this->bbt_erase_shift, bits, offs, td->reserved_block_code); + res = read_bbt(mtd, buf, td->pages[i], + this->chipsize >> this->bbt_erase_shift, + td, offs); if (res) return res; offs += this->chipsize >> (this->bbt_erase_shift + 2); } } else { - res = read_bbt (mtd, buf, td->pages[0], mtd->size >> this->bbt_erase_shift, bits, 0, td->reserved_block_code); + res = read_bbt(mtd, buf, td->pages[0], + mtd->size >> this->bbt_erase_shift, td, 0); if (res) return res; } -- cgit v1.2.3 From 7cba7b14fe179969d7217cca52e28519d7d6ca89 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Thu, 30 Sep 2010 21:28:01 +0200 Subject: mtd: nand: add support for BBT without OOB The first (sixt) byte in the OOB area contains vendor's bad block information. During identification of the NAND chip this information is collected by scanning the complete chip. The option NAND_USE_FLASH_BBT is used to store this information in a sector so we don't have to scan the complete flash. Unfortunately the code stores a marker in order to recognize the BBT in the OOB area. This will fail if the OOB area is completely used for ECC. This patch introduces the option NAND_USE_FLASH_BBT_NO_OOB which has to be used with NAND_USE_FLASH_BBT. It will then store BBT on flash without touching the OOB area. The BBT format on flash remains same except the first page starts with the recognition pattern followed by the version byte. This change was tested in nandsim and it looks good so far :) Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_bbt.c | 228 +++++++++++++++++++++++++++++++++++++++----- 1 file changed, 202 insertions(+), 26 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 587297e43554..1dcafb8f47dd 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -13,28 +13,37 @@ * Description: * * When nand_scan_bbt is called, then it tries to find the bad block table - * depending on the options in the bbt descriptor(s). If a bbt is found - * then the contents are read and the memory based bbt is created. If a - * mirrored bbt is selected then the mirror is searched too and the - * versions are compared. If the mirror has a greater version number - * than the mirror bbt is used to build the memory based bbt. + * depending on the options in the BBT descriptor(s). If no flash based BBT + * (NAND_USE_FLASH_BBT) is specified then the device is scanned for factory + * marked good / bad blocks. This information is used to create a memory BBT. + * Once a new bad block is discovered then the "factory" information is updated + * on the device. + * If a flash based BBT is specified then the function first tries to find the + * BBT on flash. If a BBT is found then the contents are read and the memory + * based BBT is created. If a mirrored BBT is selected then the mirror is + * searched too and the versions are compared. If the mirror has a greater + * version number than the mirror BBT is used to build the memory based BBT. * If the tables are not versioned, then we "or" the bad block information. - * If one of the bbt's is out of date or does not exist it is (re)created. - * If no bbt exists at all then the device is scanned for factory marked + * If one of the BBTs is out of date or does not exist it is (re)created. + * If no BBT exists at all then the device is scanned for factory marked * good / bad blocks and the bad block tables are created. * - * For manufacturer created bbts like the one found on M-SYS DOC devices - * the bbt is searched and read but never created + * For manufacturer created BBTs like the one found on M-SYS DOC devices + * the BBT is searched and read but never created * - * The autogenerated bad block table is located in the last good blocks + * The auto generated bad block table is located in the last good blocks * of the device. The table is mirrored, so it can be updated eventually. - * The table is marked in the oob area with an ident pattern and a version - * number which indicates which of both tables is more up to date. + * The table is marked in the OOB area with an ident pattern and a version + * number which indicates which of both tables is more up to date. If the NAND + * controller needs the complete OOB area for the ECC information then the + * option NAND_USE_FLASH_BBT_NO_OOB should be used: it moves the ident pattern + * and the version byte into the data area and the OOB area will remain + * untouched. * * The table uses 2 bits per block - * 11b: block is good - * 00b: block is factory marked bad - * 01b, 10b: block is marked bad due to wear + * 11b: block is good + * 00b: block is factory marked bad + * 01b, 10b: block is marked bad due to wear * * The memory bad block table uses the following scheme: * 00b: block is good @@ -59,6 +68,16 @@ #include #include +static int check_pattern_no_oob(uint8_t *buf, struct nand_bbt_descr *td) +{ + int ret; + + ret = memcmp(buf, td->pattern, td->len); + if (!ret) + return ret; + return -1; +} + /** * check_pattern - [GENERIC] check if a pattern is in the buffer * @buf: the buffer to search @@ -77,6 +96,9 @@ static int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_desc int i, end = 0; uint8_t *p = buf; + if (td->options & NAND_BBT_NO_OOB) + return check_pattern_no_oob(buf, td); + end = paglen + td->offs; if (td->options & NAND_BBT_SCANEMPTY) { for (i = 0; i < end; i++) { @@ -155,6 +177,25 @@ static int check_short_pattern(uint8_t *buf, struct nand_bbt_descr *td) return 0; } +/** + * add_marker_len - compute the length of the marker in data area + * @td: BBT descriptor used for computation + * + * The length will be 0 if the markeris located in OOB area. + */ +static u32 add_marker_len(struct nand_bbt_descr *td) +{ + u32 len; + + if (!(td->options & NAND_BBT_NO_OOB)) + return 0; + + len = td->len; + if (td->options & NAND_BBT_VERSION) + len++; + return len; +} + /** * read_bbt - [GENERIC] Read the bad block table starting from page * @mtd: MTD device structure @@ -176,13 +217,24 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, loff_t from; int bits = td->options & NAND_BBT_NRBITS_MSK; uint8_t msk = (uint8_t) ((1 << bits) - 1); + u32 marker_len; int reserved_block_code = td->reserved_block_code; totlen = (num * bits) >> 3; + marker_len = add_marker_len(td); from = ((loff_t) page) << this->page_shift; while (totlen) { len = min(totlen, (size_t) (1 << this->bbt_erase_shift)); + if (marker_len) { + /* + * In case the BBT marker is not in the OOB area it + * will be just in the first page. + */ + len -= marker_len; + from += marker_len; + marker_len = 0; + } res = mtd->read(mtd, from, len, &retlen, buf); if (res < 0) { if (retlen != len) { @@ -260,10 +312,26 @@ static int read_abs_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc return 0; } +/* + * BBT marker is in the first page, no OOB. + */ +static int scan_read_raw_data(struct mtd_info *mtd, uint8_t *buf, loff_t offs, + struct nand_bbt_descr *td) +{ + size_t retlen; + size_t len; + + len = td->len; + if (td->options & NAND_BBT_VERSION) + len++; + + return mtd->read(mtd, offs, len, &retlen, buf); +} + /* * Scan read raw data from flash */ -static int scan_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t offs, +static int scan_read_raw_oob(struct mtd_info *mtd, uint8_t *buf, loff_t offs, size_t len) { struct mtd_oob_ops ops; @@ -296,6 +364,15 @@ static int scan_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t offs, return 0; } +static int scan_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t offs, + size_t len, struct nand_bbt_descr *td) +{ + if (td->options & NAND_BBT_NO_OOB) + return scan_read_raw_data(mtd, buf, offs, td); + else + return scan_read_raw_oob(mtd, buf, offs, len); +} + /* * Scan write data with oob to flash */ @@ -314,6 +391,15 @@ static int scan_write_bbt(struct mtd_info *mtd, loff_t offs, size_t len, return mtd->write_oob(mtd, offs, &ops); } +static u32 bbt_get_ver_offs(struct mtd_info *mtd, struct nand_bbt_descr *td) +{ + u32 ver_offs = td->veroffs; + + if (!(td->options & NAND_BBT_NO_OOB)) + ver_offs += mtd->writesize; + return ver_offs; +} + /** * read_abs_bbts - [GENERIC] Read the bad block table(s) for all chips starting at a given page * @mtd: MTD device structure @@ -333,8 +419,8 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, /* Read the primary version, if available */ if (td->options & NAND_BBT_VERSION) { scan_read_raw(mtd, buf, (loff_t)td->pages[0] << this->page_shift, - mtd->writesize); - td->version[0] = buf[mtd->writesize + td->veroffs]; + mtd->writesize, td); + td->version[0] = buf[bbt_get_ver_offs(mtd, td)]; printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", td->pages[0], td->version[0]); } @@ -342,8 +428,8 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, /* Read the mirror version, if available */ if (md && (md->options & NAND_BBT_VERSION)) { scan_read_raw(mtd, buf, (loff_t)md->pages[0] << this->page_shift, - mtd->writesize); - md->version[0] = buf[mtd->writesize + md->veroffs]; + mtd->writesize, td); + md->version[0] = buf[bbt_get_ver_offs(mtd, md)]; printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", md->pages[0], md->version[0]); } @@ -359,7 +445,7 @@ static int scan_block_full(struct mtd_info *mtd, struct nand_bbt_descr *bd, { int ret, j; - ret = scan_read_raw(mtd, buf, offs, readlen); + ret = scan_read_raw_oob(mtd, buf, offs, readlen); if (ret) return ret; @@ -466,6 +552,8 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, for (i = startblock; i < numblocks;) { int ret; + BUG_ON(bd->options & NAND_BBT_NO_OOB); + if (bd->options & NAND_BBT_SCANALLPAGES) ret = scan_block_full(mtd, bd, from, buf, readlen, scanlen, len); @@ -547,11 +635,12 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr loff_t offs = (loff_t)actblock << this->bbt_erase_shift; /* Read first page */ - scan_read_raw(mtd, buf, offs, mtd->writesize); + scan_read_raw(mtd, buf, offs, mtd->writesize, td); if (!check_pattern(buf, scanlen, mtd->writesize, td)) { td->pages[i] = actblock << blocktopage; if (td->options & NAND_BBT_VERSION) { - td->version[i] = buf[mtd->writesize + td->veroffs]; + offs = bbt_get_ver_offs(mtd, td); + td->version[i] = buf[offs]; } break; } @@ -735,6 +824,21 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, memset(&buf[offs], 0xff, (size_t) (numblocks >> sft)); ooboffs = len + (pageoffs * mtd->oobsize); + } else if (td->options & NAND_BBT_NO_OOB) { + ooboffs = 0; + offs = td->len; + /* the version byte */ + if (td->options & NAND_BBT_VERSION) + offs++; + /* Calc length */ + len = (size_t) (numblocks >> sft); + len += offs; + /* Make it page aligned ! */ + len = ALIGN(len, mtd->writesize); + /* Preset the buffer with 0xff */ + memset(buf, 0xff, len); + /* Pattern is located at the begin of first page */ + memcpy(buf, td->pattern, td->len); } else { /* Calc length */ len = (size_t) (numblocks >> sft); @@ -773,7 +877,9 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, if (res < 0) goto outerr; - res = scan_write_bbt(mtd, to, len, buf, &buf[len]); + res = scan_write_bbt(mtd, to, len, buf, + td->options & NAND_BBT_NO_OOB ? NULL : + &buf[len]); if (res < 0) goto outerr; @@ -983,6 +1089,49 @@ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td) } } +/** + * verify_bbt_descr - verify the bad block description + * @bd: the table to verify + * + * This functions performs a few sanity checks on the bad block description + * table. + */ +static void verify_bbt_descr(struct mtd_info *mtd, struct nand_bbt_descr *bd) +{ + struct nand_chip *this = mtd->priv; + u32 pattern_len = bd->len; + u32 bits = bd->options & NAND_BBT_NRBITS_MSK; + u32 table_size; + + if (!bd) + return; + BUG_ON((this->options & NAND_USE_FLASH_BBT_NO_OOB) && + !(this->options & NAND_USE_FLASH_BBT)); + BUG_ON(!bits); + + if (bd->options & NAND_BBT_VERSION) + pattern_len++; + + if (bd->options & NAND_BBT_NO_OOB) { + BUG_ON(!(this->options & NAND_USE_FLASH_BBT)); + BUG_ON(!(this->options & NAND_USE_FLASH_BBT_NO_OOB)); + BUG_ON(bd->offs); + if (bd->options & NAND_BBT_VERSION) + BUG_ON(bd->veroffs != bd->len); + BUG_ON(bd->options & NAND_BBT_SAVECONTENT); + } + + if (bd->options & NAND_BBT_PERCHIP) + table_size = this->chipsize >> this->bbt_erase_shift; + else + table_size = mtd->size >> this->bbt_erase_shift; + table_size >>= 3; + table_size *= bits; + if (bd->options & NAND_BBT_NO_OOB) + table_size += pattern_len; + BUG_ON(table_size > (1 << this->bbt_erase_shift)); +} + /** * nand_scan_bbt - [NAND Interface] scan, find, read and maybe create bad block table(s) * @mtd: MTD device structure @@ -1024,6 +1173,8 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) } return res; } + verify_bbt_descr(mtd, td); + verify_bbt_descr(mtd, md); /* Allocate a temporary buffer for one eraseblock incl. oob */ len = (1 << this->bbt_erase_shift); @@ -1167,6 +1318,26 @@ static struct nand_bbt_descr bbt_mirror_descr = { .pattern = mirror_pattern }; +static struct nand_bbt_descr bbt_main_no_bbt_descr = { + .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE + | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP + | NAND_BBT_NO_OOB, + .len = 4, + .veroffs = 4, + .maxblocks = 4, + .pattern = bbt_pattern +}; + +static struct nand_bbt_descr bbt_mirror_no_bbt_descr = { + .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE + | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP + | NAND_BBT_NO_OOB, + .len = 4, + .veroffs = 4, + .maxblocks = 4, + .pattern = mirror_pattern +}; + #define BBT_SCAN_OPTIONS (NAND_BBT_SCANLASTPAGE | NAND_BBT_SCAN2NDPAGE | \ NAND_BBT_SCANBYTE1AND6) /** @@ -1237,8 +1408,13 @@ int nand_default_bbt(struct mtd_info *mtd) if (this->options & NAND_USE_FLASH_BBT) { /* Use the default pattern descriptors */ if (!this->bbt_td) { - this->bbt_td = &bbt_main_descr; - this->bbt_md = &bbt_mirror_descr; + if (this->options & NAND_USE_FLASH_BBT_NO_OOB) { + this->bbt_td = &bbt_main_no_bbt_descr; + this->bbt_md = &bbt_mirror_no_bbt_descr; + } else { + this->bbt_td = &bbt_main_descr; + this->bbt_md = &bbt_mirror_descr; + } } if (!this->badblock_pattern) { this->badblock_pattern = (mtd->writesize > 512) ? &largepage_flashbased : &smallpage_flashbased; -- cgit v1.2.3 From 453281a973c10bce941b240d1c654d536623b16b Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Fri, 1 Oct 2010 21:37:37 +0200 Subject: mtd: nand: introduce NAND_CREATE_EMPTY_BBT it will create an empty BBT table without considering vendor's BBT information. Vendor's information may be unavailable if the NAND controller has a different DATA & OOB layout or this information may be allready purged. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_bbt.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 1dcafb8f47dd..586b981f0e61 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -999,7 +999,8 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc continue; /* Create the table in memory by scanning the chip(s) */ - create_bbt(mtd, buf, bd, chipsel); + if (!(this->options & NAND_CREATE_EMPTY_BBT)) + create_bbt(mtd, buf, bd, chipsel); td->version[i] = 1; if (md) -- cgit v1.2.3 From ce85b79fe809eaf34b84a9ebf4ac37ee37b3455b Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Wed, 29 Sep 2010 19:43:54 +0200 Subject: mtd: nandsim: add module param for BBT handling I used this to check the BBT on flash together with a hack in mtdchar in order to read bad blocks. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nandsim.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c index c25648bb5793..a6a73aab1253 100644 --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -107,6 +107,7 @@ static char *gravepages = NULL; static unsigned int rptwear = 0; static unsigned int overridesize = 0; static char *cache_file = NULL; +static unsigned int bbt; module_param(first_id_byte, uint, 0400); module_param(second_id_byte, uint, 0400); @@ -130,6 +131,7 @@ module_param(gravepages, charp, 0400); module_param(rptwear, uint, 0400); module_param(overridesize, uint, 0400); module_param(cache_file, charp, 0400); +module_param(bbt, uint, 0400); MODULE_PARM_DESC(first_id_byte, "The first byte returned by NAND Flash 'read ID' command (manufacturer ID)"); MODULE_PARM_DESC(second_id_byte, "The second byte returned by NAND Flash 'read ID' command (chip ID)"); @@ -162,6 +164,7 @@ MODULE_PARM_DESC(overridesize, "Specifies the NAND Flash size overriding the I "The size is specified in erase blocks and as the exponent of a power of two" " e.g. 5 means a size of 32 erase blocks"); MODULE_PARM_DESC(cache_file, "File to use to cache nand pages instead of memory"); +MODULE_PARM_DESC(bbt, "0 OOB, 1 BBT with marker in OOB, 2 BBT with marker in data area"); /* The largest possible page size */ #define NS_LARGEST_PAGE_SIZE 4096 @@ -2264,6 +2267,18 @@ static int __init ns_init_module(void) /* and 'badblocks' parameters to work */ chip->options |= NAND_SKIP_BBTSCAN; + switch (bbt) { + case 2: + chip->options |= NAND_USE_FLASH_BBT_NO_OOB; + case 1: + chip->options |= NAND_USE_FLASH_BBT; + case 0: + break; + default: + NS_ERR("bbt has to be 0..2\n"); + retval = -EINVAL; + goto error; + } /* * Perform minimum nandsim structure initialization to handle * the initial ID read command correctly @@ -2321,10 +2336,10 @@ static int __init ns_init_module(void) if ((retval = init_nandsim(nsmtd)) != 0) goto err_exit; - if ((retval = parse_badblocks(nand, nsmtd)) != 0) + if ((retval = nand_default_bbt(nsmtd)) != 0) goto err_exit; - if ((retval = nand_default_bbt(nsmtd)) != 0) + if ((retval = parse_badblocks(nand, nsmtd)) != 0) goto err_exit; /* Register NAND partitions */ -- cgit v1.2.3 From d86fbdb8ed0ac957693ff475cca076021677166a Mon Sep 17 00:00:00 2001 From: David Jander Date: Thu, 30 Sep 2010 13:26:02 +0200 Subject: mtd: m25p80.c: Add support for S25FL032P spi-nor flash devices. Signed-off-by: David Jander Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/devices/m25p80.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index b6fd7c254de6..7e0edd40ad41 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -661,6 +661,7 @@ static const struct spi_device_id m25p_ids[] = { { "s25sl008a", INFO(0x010213, 0, 64 * 1024, 16, 0) }, { "s25sl016a", INFO(0x010214, 0, 64 * 1024, 32, 0) }, { "s25sl032a", INFO(0x010215, 0, 64 * 1024, 64, 0) }, + { "s25sl032p", INFO(0x010215, 0x4d00, 64 * 1024, 64, SECT_4K) }, { "s25sl064a", INFO(0x010216, 0, 64 * 1024, 128, 0) }, { "s25sl12800", INFO(0x012018, 0x0300, 256 * 1024, 64, 0) }, { "s25sl12801", INFO(0x012018, 0x0301, 64 * 1024, 256, 0) }, -- cgit v1.2.3 From 766f271a63d1ee7caed8030736e6aed253d02073 Mon Sep 17 00:00:00 2001 From: Ian Munsie Date: Fri, 1 Oct 2010 17:06:08 +1000 Subject: mtd: Fix endianness issues from device tree This patch adds the appropriate conversions to correct the endianness issues in the MTD driver whenever it accesses the device tree (which is always big endian). Signed-off-by: Ian Munsie Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/maps/physmap_of.c | 14 +++++++------- drivers/mtd/nand/fsl_upm.c | 8 ++++---- drivers/mtd/nand/mpc5121_nfc.c | 4 ++-- drivers/mtd/nand/ndfc.c | 8 ++++---- drivers/mtd/ofpart.c | 6 +++--- 5 files changed, 20 insertions(+), 20 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c index fe63f6bd663c..ec4011c3d5f2 100644 --- a/drivers/mtd/maps/physmap_of.c +++ b/drivers/mtd/maps/physmap_of.c @@ -50,7 +50,7 @@ static int parse_obsolete_partitions(struct platform_device *dev, { int i, plen, nr_parts; const struct { - u32 offset, len; + __be32 offset, len; } *part; const char *names; @@ -69,9 +69,9 @@ static int parse_obsolete_partitions(struct platform_device *dev, names = of_get_property(dp, "partition-names", &plen); for (i = 0; i < nr_parts; i++) { - info->parts[i].offset = part->offset; - info->parts[i].size = part->len & ~1; - if (part->len & 1) /* bit 0 set signifies read only partition */ + info->parts[i].offset = be32_to_cpu(part->offset); + info->parts[i].size = be32_to_cpu(part->len) & ~1; + if (be32_to_cpu(part->len) & 1) /* bit 0 set signifies read only partition */ info->parts[i].mask_flags = MTD_WRITEABLE; if (names && (plen > 0)) { @@ -226,11 +226,11 @@ static int __devinit of_flash_probe(struct platform_device *dev, struct resource res; struct of_flash *info; const char *probe_type = match->data; - const u32 *width; + const __be32 *width; int err; int i; int count; - const u32 *p; + const __be32 *p; int reg_tuple_size; struct mtd_info **mtd_list = NULL; resource_size_t res_size; @@ -294,7 +294,7 @@ static int __devinit of_flash_probe(struct platform_device *dev, info->list[i].map.name = dev_name(&dev->dev); info->list[i].map.phys = res.start; info->list[i].map.size = res_size; - info->list[i].map.bankwidth = *width; + info->list[i].map.bankwidth = be32_to_cpup(width); err = -ENOMEM; info->list[i].map.virt = ioremap(info->list[i].map.phys, diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c index c8ab15653e7c..efdcca94ce55 100644 --- a/drivers/mtd/nand/fsl_upm.c +++ b/drivers/mtd/nand/fsl_upm.c @@ -222,7 +222,7 @@ static int __devinit fun_probe(struct platform_device *ofdev, { struct fsl_upm_nand *fun; struct resource io_res; - const uint32_t *prop; + const __be32 *prop; int rnb_gpio; int ret; int size; @@ -270,7 +270,7 @@ static int __devinit fun_probe(struct platform_device *ofdev, goto err1; } for (i = 0; i < fun->mchip_count; i++) - fun->mchip_offsets[i] = prop[i]; + fun->mchip_offsets[i] = be32_to_cpu(prop[i]); } else { fun->mchip_count = 1; } @@ -295,13 +295,13 @@ static int __devinit fun_probe(struct platform_device *ofdev, prop = of_get_property(ofdev->dev.of_node, "chip-delay", NULL); if (prop) - fun->chip_delay = *prop; + fun->chip_delay = be32_to_cpup(prop); else fun->chip_delay = 50; prop = of_get_property(ofdev->dev.of_node, "fsl,upm-wait-flags", &size); if (prop && size == sizeof(uint32_t)) - fun->wait_flags = *prop; + fun->wait_flags = be32_to_cpup(prop); else fun->wait_flags = FSL_UPM_WAIT_RUN_PATTERN | FSL_UPM_WAIT_WRITE_BYTE; diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c index f4610bc7ccd0..469e649c911c 100644 --- a/drivers/mtd/nand/mpc5121_nfc.c +++ b/drivers/mtd/nand/mpc5121_nfc.c @@ -663,7 +663,7 @@ static int __devinit mpc5121_nfc_probe(struct platform_device *op, #endif struct nand_chip *chip; unsigned long regs_paddr, regs_size; - const uint *chips_no; + const __be32 *chips_no; int resettime = 0; int retval = 0; int rev, len; @@ -806,7 +806,7 @@ static int __devinit mpc5121_nfc_probe(struct platform_device *op, } /* Detect NAND chips */ - if (nand_scan(mtd, *chips_no)) { + if (nand_scan(mtd, be32_to_cpup(chips_no))) { dev_err(dev, "NAND Flash not found !\n"); devm_free_irq(dev, prv->irq, mtd); retval = -ENXIO; diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c index 510554e6c115..c9ae0a5023b6 100644 --- a/drivers/mtd/nand/ndfc.c +++ b/drivers/mtd/nand/ndfc.c @@ -229,7 +229,7 @@ static int __devinit ndfc_probe(struct platform_device *ofdev, const struct of_device_id *match) { struct ndfc_controller *ndfc = &ndfc_ctrl; - const u32 *reg; + const __be32 *reg; u32 ccr; int err, len; @@ -244,7 +244,7 @@ static int __devinit ndfc_probe(struct platform_device *ofdev, dev_err(&ofdev->dev, "unable read reg property (%d)\n", len); return -ENOENT; } - ndfc->chip_select = reg[0]; + ndfc->chip_select = be32_to_cpu(reg[0]); ndfc->ndfcbase = of_iomap(ofdev->dev.of_node, 0); if (!ndfc->ndfcbase) { @@ -257,7 +257,7 @@ static int __devinit ndfc_probe(struct platform_device *ofdev, /* It is ok if ccr does not exist - just default to 0 */ reg = of_get_property(ofdev->dev.of_node, "ccr", NULL); if (reg) - ccr |= *reg; + ccr |= be32_to_cpup(reg); out_be32(ndfc->ndfcbase + NDFC_CCR, ccr); @@ -265,7 +265,7 @@ static int __devinit ndfc_probe(struct platform_device *ofdev, reg = of_get_property(ofdev->dev.of_node, "bank-settings", NULL); if (reg) { int offset = NDFC_BCFG0 + (ndfc->chip_select << 2); - out_be32(ndfc->ndfcbase + offset, *reg); + out_be32(ndfc->ndfcbase + offset, be32_to_cpup(reg)); } err = ndfc_chip_init(ndfc, ofdev->dev.of_node); diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c index 8bf7dc6d1ce6..a996718fa6b0 100644 --- a/drivers/mtd/ofpart.c +++ b/drivers/mtd/ofpart.c @@ -44,7 +44,7 @@ int __devinit of_mtd_parse_partitions(struct device *dev, pp = NULL; i = 0; while ((pp = of_get_next_child(node, pp))) { - const u32 *reg; + const __be32 *reg; int len; reg = of_get_property(pp, "reg", &len); @@ -53,8 +53,8 @@ int __devinit of_mtd_parse_partitions(struct device *dev, continue; } - (*pparts)[i].offset = reg[0]; - (*pparts)[i].size = reg[1]; + (*pparts)[i].offset = be32_to_cpu(reg[0]); + (*pparts)[i].size = be32_to_cpu(reg[1]); partname = of_get_property(pp, "label", &len); if (!partname) -- cgit v1.2.3 From 733daa52b8d358e7c18be7fb9f82afc0619408f4 Mon Sep 17 00:00:00 2001 From: "G, Manjunath Kondaiah" Date: Wed, 6 Oct 2010 03:26:56 +0530 Subject: mtd: omap2: fix static declaration warning This patch fixes sparse warning for static declaration of variable "use_dma" drivers/mtd/nand/omap2.c:114:11: warning: symbol 'use_dma' was not declared. Should it be static? Signed-off-by: G, Manjunath Kondaiah Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/omap2.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 133d51528f8d..439e80d78edd 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -111,11 +111,11 @@ static int use_dma = 1; module_param(use_dma, bool, 0); MODULE_PARM_DESC(use_dma, "enable/disable use of DMA"); #else -const int use_dma; +static const int use_dma; #endif #else const int use_prefetch; -const int use_dma; +static const int use_dma; #endif struct omap_nand_info { -- cgit v1.2.3 From 940fe282aeda984d32ca9e3d2be7df1b4c5161b1 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Fri, 8 Oct 2010 14:41:27 +0200 Subject: mtd: physmap_of: Loop through all "reg" tuples for mapping This patch changes the loop over the "reg" tuples to not exit directly upon of_address_to_resource() failure but to continue with the next "reg" tuple instead. This failure could be due to size = 0, which might be passed via the device-tree. This is needed for boards, where a "reg" tuple might have size 0 (of_address_to_resource() returns with EINVAL when size = 0). Example: Fully equipped board: reg = <0 0x00000000 0x00400000 0 0x00400000 0x00400000>; Partially equipped board: reg = <0 0x00000000 0x00400000 0 0x00400000 0x00000000>; This could be the case on boards with runtime detection of multiple NOR flash configurations where the detected flash size is inserted into the dtb in U-Boot. Signed-off-by: Stefan Roese Signed-off-by: David Woodhouse --- drivers/mtd/maps/physmap_of.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c index ec4011c3d5f2..9861814aa027 100644 --- a/drivers/mtd/maps/physmap_of.c +++ b/drivers/mtd/maps/physmap_of.c @@ -267,9 +267,11 @@ static int __devinit of_flash_probe(struct platform_device *dev, for (i = 0; i < count; i++) { err = -ENXIO; if (of_address_to_resource(dp, i, &res)) { - dev_err(&dev->dev, "Can't get IO address from device" - " tree\n"); - goto err_out; + /* + * Continue with next register tuple if this + * one is not mappable + */ + continue; } dev_dbg(&dev->dev, "of_flash device: %.8llx-%.8llx\n", -- cgit v1.2.3 From edb44b9b9cbff71f6aa9bebc384ee1896c8bfc2c Mon Sep 17 00:00:00 2001 From: Roman Tereshonkov Date: Mon, 11 Oct 2010 14:47:32 +0300 Subject: mtd: onenand: fix 4KiB page onenand chip recognition For 4Gib non-DDP chip it does not follow that it is always 4KiB page chip. The number of data buffers is checked and if it is equal to 1 we suppose that it is 4KiB page onenand chip. Signed-off-by: Roman Tereshonkov Acked-by: Kyungmin Park Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/onenand/onenand_base.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 33e0dbb0a96d..6b3a875647c9 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -3365,18 +3365,19 @@ static int onenand_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, static void onenand_check_features(struct mtd_info *mtd) { struct onenand_chip *this = mtd->priv; - unsigned int density, process; + unsigned int density, process, numbufs; /* Lock scheme depends on density and process */ density = onenand_get_density(this->device_id); process = this->version_id >> ONENAND_VERSION_PROCESS_SHIFT; + numbufs = this->read_word(this->base + ONENAND_REG_NUM_BUFFERS) >> 8; /* Lock scheme */ switch (density) { case ONENAND_DEVICE_DENSITY_4Gb: if (ONENAND_IS_DDP(this)) this->options |= ONENAND_HAS_2PLANE; - else + else if (numbufs == 1) this->options |= ONENAND_HAS_4KB_PAGE; case ONENAND_DEVICE_DENSITY_2Gb: -- cgit v1.2.3 From d031c22643ce5f0f92eb06735498f63b7bc3e447 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Sat, 16 Oct 2010 14:56:22 +0200 Subject: mtd: cfi_cmdset_0002: code cleanups - remove disabled code (hasn't been touched since the beginning of git and should be reimplemented if really needed) - convert remaining c++-comments to plain c-style Signed-off-by: Wolfram Sang Acked-by: Guillaume LECERF Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/chips/cfi_cmdset_0002.c | 47 +++++++------------------------------ 1 file changed, 8 insertions(+), 39 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 3e6c47bdce53..19344763fc56 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -317,14 +317,14 @@ static void fixup_s29gl032n_sectors(struct mtd_info *mtd, void *param) /* Used to fix CFI-Tables of chips without Extended Query Tables */ static struct cfi_fixup cfi_nopri_fixup_table[] = { - { CFI_MFR_SST, 0x234A, fixup_sst39vf, NULL, }, // SST39VF1602 - { CFI_MFR_SST, 0x234B, fixup_sst39vf, NULL, }, // SST39VF1601 - { CFI_MFR_SST, 0x235A, fixup_sst39vf, NULL, }, // SST39VF3202 - { CFI_MFR_SST, 0x235B, fixup_sst39vf, NULL, }, // SST39VF3201 - { CFI_MFR_SST, 0x235C, fixup_sst39vf_rev_b, NULL, }, // SST39VF3202B - { CFI_MFR_SST, 0x235D, fixup_sst39vf_rev_b, NULL, }, // SST39VF3201B - { CFI_MFR_SST, 0x236C, fixup_sst39vf_rev_b, NULL, }, // SST39VF6402B - { CFI_MFR_SST, 0x236D, fixup_sst39vf_rev_b, NULL, }, // SST39VF6401B + { CFI_MFR_SST, 0x234A, fixup_sst39vf, NULL, }, /* SST39VF1602 */ + { CFI_MFR_SST, 0x234B, fixup_sst39vf, NULL, }, /* SST39VF1601 */ + { CFI_MFR_SST, 0x235A, fixup_sst39vf, NULL, }, /* SST39VF3202 */ + { CFI_MFR_SST, 0x235B, fixup_sst39vf, NULL, }, /* SST39VF3201 */ + { CFI_MFR_SST, 0x235C, fixup_sst39vf_rev_b, NULL, }, /* SST39VF3202B */ + { CFI_MFR_SST, 0x235D, fixup_sst39vf_rev_b, NULL, }, /* SST39VF3201B */ + { CFI_MFR_SST, 0x236C, fixup_sst39vf_rev_b, NULL, }, /* SST39VF6402B */ + { CFI_MFR_SST, 0x236D, fixup_sst39vf_rev_b, NULL, }, /* SST39VF6401B */ { 0, 0, NULL, NULL } }; @@ -545,15 +545,6 @@ static struct mtd_info *cfi_amdstd_setup(struct mtd_info *mtd) printk(KERN_WARNING "Sum of regions (%lx) != total size of set of interleaved chips (%lx)\n", offset, devsize); goto setup_err; } -#if 0 - // debug - for (i=0; inumeraseregions;i++){ - printk("%d: offset=0x%x,size=0x%x,blocks=%d\n", - i,mtd->eraseregions[i].offset, - mtd->eraseregions[i].erasesize, - mtd->eraseregions[i].numblocks); - } -#endif __module_get(THIS_MODULE); register_reboot_notifier(&mtd->reboot_notifier); @@ -1025,9 +1016,6 @@ static inline int do_read_secsi_onechip(struct map_info *map, struct flchip *chi mutex_lock(&chip->mutex); if (chip->state != FL_READY){ -#if 0 - printk(KERN_DEBUG "Waiting for chip to read, status = %d\n", chip->state); -#endif set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&chip->wq, &wait); @@ -1035,10 +1023,6 @@ static inline int do_read_secsi_onechip(struct map_info *map, struct flchip *chi schedule(); remove_wait_queue(&chip->wq, &wait); -#if 0 - if(signal_pending(current)) - return -EINTR; -#endif timeo = jiffies + HZ; goto retry; @@ -1246,9 +1230,6 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len, mutex_lock(&cfi->chips[chipnum].mutex); if (cfi->chips[chipnum].state != FL_READY) { -#if 0 - printk(KERN_DEBUG "Waiting for chip to write, status = %d\n", cfi->chips[chipnum].state); -#endif set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&cfi->chips[chipnum].wq, &wait); @@ -1256,10 +1237,6 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len, schedule(); remove_wait_queue(&cfi->chips[chipnum].wq, &wait); -#if 0 - if(signal_pending(current)) - return -EINTR; -#endif goto retry; } @@ -1324,9 +1301,6 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len, mutex_lock(&cfi->chips[chipnum].mutex); if (cfi->chips[chipnum].state != FL_READY) { -#if 0 - printk(KERN_DEBUG "Waiting for chip to write, status = %d\n", cfi->chips[chipnum].state); -#endif set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&cfi->chips[chipnum].wq, &wait); @@ -1334,10 +1308,6 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len, schedule(); remove_wait_queue(&cfi->chips[chipnum].wq, &wait); -#if 0 - if(signal_pending(current)) - return -EINTR; -#endif goto retry1; } @@ -1396,7 +1366,6 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL); - //cfi_send_gen_cmd(0xA0, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); /* Write Buffer Load */ map_write(map, CMD(0x25), cmd_adr); -- cgit v1.2.3 From 5954c47c2194abcdeeae5f752e64b7c75770dbd3 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sat, 16 Oct 2010 18:26:59 -0400 Subject: mtd: Blackfin NFC: fix badblock location with BootROM OOB The bbt structure isn't actually used, just the badblockpos. This lets the driver correctly handle badblocks with the different OOB layout with certain sized flashes. Previously, the blocks would all be reported as bad and be completely unusable. Signed-off-by: Mike Frysinger Signed-off-by: David Woodhouse --- drivers/mtd/nand/bf5xx_nand.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/bf5xx_nand.c b/drivers/mtd/nand/bf5xx_nand.c index 6fbeefa3a766..79947bea4d57 100644 --- a/drivers/mtd/nand/bf5xx_nand.c +++ b/drivers/mtd/nand/bf5xx_nand.c @@ -110,15 +110,6 @@ static const unsigned short bfin_nfc_pin_req[] = 0}; #ifdef CONFIG_MTD_NAND_BF5XX_BOOTROM_ECC -static uint8_t bbt_pattern[] = { 0xff }; - -static struct nand_bbt_descr bootrom_bbt = { - .options = 0, - .offs = 63, - .len = 1, - .pattern = bbt_pattern, -}; - static struct nand_ecclayout bootrom_ecclayout = { .eccbytes = 24, .eccpos = { @@ -809,7 +800,6 @@ static int __devinit bf5xx_nand_probe(struct platform_device *pdev) /* setup hardware ECC data struct */ if (hardware_ecc) { #ifdef CONFIG_MTD_NAND_BF5XX_BOOTROM_ECC - chip->badblock_pattern = &bootrom_bbt; chip->ecc.layout = &bootrom_ecclayout; #endif chip->read_buf = bf5xx_nand_dma_read_buf; @@ -830,6 +820,10 @@ static int __devinit bf5xx_nand_probe(struct platform_device *pdev) goto out_err_nand_scan; } +#ifdef CONFIG_MTD_NAND_BF5XX_BOOTROM_ECC + chip->badblockpos = 63; +#endif + /* add NAND partition */ bf5xx_nand_add_partition(info); -- cgit v1.2.3 From ebd71e3a4861849054751779ff5ccd3fb29a1e0a Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sat, 16 Oct 2010 18:31:14 -0400 Subject: mtd: maps: gpio-addr-flash: fix warnings and make more portable As reported on lkml, building this module for HIMEM systems spews warnings about mismatch in pointer types. Further, we need to use ioremap() in order to properly access the flash memory on most systems rather than just doing it directly. Reported-by: Alan Cox Signed-off-by: Mike Frysinger Signed-off-by: David Woodhouse --- drivers/mtd/maps/gpio-addr-flash.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/maps/gpio-addr-flash.c b/drivers/mtd/maps/gpio-addr-flash.c index 32e89d773b4e..af5707a80205 100644 --- a/drivers/mtd/maps/gpio-addr-flash.c +++ b/drivers/mtd/maps/gpio-addr-flash.c @@ -208,10 +208,14 @@ static int __devinit gpio_flash_probe(struct platform_device *pdev) if (!state) return -ENOMEM; + /* + * We cast start/end to known types in the boards file, so cast + * away their pointer types here to the known types (gpios->xxx). + */ state->gpio_count = gpios->end; - state->gpio_addrs = (void *)gpios->start; + state->gpio_addrs = (void *)(unsigned long)gpios->start; state->gpio_values = (void *)(state + 1); - state->win_size = memory->end - memory->start + 1; + state->win_size = resource_size(memory); memset(state->gpio_values, 0xff, arr_size); state->map.name = DRIVER_NAME; @@ -221,7 +225,7 @@ static int __devinit gpio_flash_probe(struct platform_device *pdev) state->map.copy_to = gf_copy_to; state->map.bankwidth = pdata->width; state->map.size = state->win_size * (1 << state->gpio_count); - state->map.virt = (void __iomem *)memory->start; + state->map.virt = ioremap_nocache(memory->start, state->map.size); state->map.phys = NO_XIP; state->map.map_priv_1 = (unsigned long)state; -- cgit v1.2.3 From 008c751ec78587dd9b48bb62d4b10d616554fea2 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Fri, 15 Oct 2010 17:20:43 +0200 Subject: mtd: allow to unload the mtdtrans module if its block devices aren't open Now it once again possible to remove mtdtrans module. You still need to ensure that block devices of that module aren't mounted. This is due to the fact that as long as a block device is open, it still exists, therefore if we were to allow module removal, this block device might became used again. This time in addition to code review, I also made the code pass some torture tests like module reload in a loop + read in a loop + card insert/removal all at same time. The blktrans_open/blktrans_release don't take the mtd table lock because: While device is added (that includes execution of add_mtd_blktrans_dev) the lock is already taken Now suppose the device will never be removed. In this case even if we have changes in mtd table, the entry that we need will stay exactly the same. (Note that we don't look at table at all, just following private pointer of block device). Now suppose that someone tries to remove the mtd device. This will be propagated to trans driver which _ought_ to call del_mtd_blktrans_dev which will take the per device lock, release the mtd device and set trans->mtd = NULL. >From this point on, following opens won't even be able to know anything about that mtd device (which at that point is likely not to exist) Also the same care is taken not to trip over NULL mtd pointer in blktrans_dev_release. Signed-off-by: Maxim Levitsky Tested-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/mtd_blkdevs.c | 52 ++++++++++++++++++++++------------------------- 1 file changed, 24 insertions(+), 28 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 62e68707b07f..352831baf785 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -176,7 +176,7 @@ static void mtd_blktrans_request(struct request_queue *rq) static int blktrans_open(struct block_device *bdev, fmode_t mode) { struct mtd_blktrans_dev *dev = blktrans_dev_get(bdev->bd_disk); - int ret; + int ret = 0; if (!dev) return -ERESTARTSYS; /* FIXME: busy loop! -arnd*/ @@ -184,17 +184,17 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode) lock_kernel(); mutex_lock(&dev->lock); - if (!dev->mtd) { - ret = -ENXIO; + if (dev->open++) goto unlock; - } - ret = !dev->open++ && dev->tr->open ? dev->tr->open(dev) : 0; + kref_get(&dev->ref); + __module_get(dev->tr->owner); + + if (dev->mtd) { + ret = dev->tr->open ? dev->tr->open(dev) : 0; + __get_mtd_device(dev->mtd); + } - /* Take another reference on the device so it won't go away till - last release */ - if (!ret) - kref_get(&dev->ref); unlock: mutex_unlock(&dev->lock); blktrans_dev_put(dev); @@ -205,7 +205,7 @@ unlock: static int blktrans_release(struct gendisk *disk, fmode_t mode) { struct mtd_blktrans_dev *dev = blktrans_dev_get(disk); - int ret = -ENXIO; + int ret = 0; if (!dev) return ret; @@ -213,13 +213,16 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode) lock_kernel(); mutex_lock(&dev->lock); - /* Release one reference, we sure its not the last one here*/ - kref_put(&dev->ref, blktrans_dev_release); - - if (!dev->mtd) + if (--dev->open) goto unlock; - ret = !--dev->open && dev->tr->release ? dev->tr->release(dev) : 0; + kref_put(&dev->ref, blktrans_dev_release); + module_put(dev->tr->owner); + + if (dev->mtd) { + ret = dev->tr->release ? dev->tr->release(dev) : 0; + __put_mtd_device(dev->mtd); + } unlock: mutex_unlock(&dev->lock); blktrans_dev_put(dev); @@ -385,9 +388,6 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) gd->queue = new->rq; - __get_mtd_device(new->mtd); - __module_get(tr->owner); - /* Create processing thread */ /* TODO: workqueue ? */ new->thread = kthread_run(mtd_blktrans_thread, new, @@ -410,8 +410,6 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) } return 0; error4: - module_put(tr->owner); - __put_mtd_device(new->mtd); blk_cleanup_queue(new->rq); error3: put_disk(new->disk); @@ -448,17 +446,15 @@ int del_mtd_blktrans_dev(struct mtd_blktrans_dev *old) blk_start_queue(old->rq); spin_unlock_irqrestore(&old->queue_lock, flags); - /* Ask trans driver for release to the mtd device */ + /* If the device is currently open, tell trans driver to close it, + then put mtd device, and don't touch it again */ mutex_lock(&old->lock); - if (old->open && old->tr->release) { - old->tr->release(old); - old->open = 0; + if (old->open) { + if (old->tr->release) + old->tr->release(old); + __put_mtd_device(old->mtd); } - __put_mtd_device(old->mtd); - module_put(old->tr->owner); - - /* At that point, we don't touch the mtd anymore */ old->mtd = NULL; mutex_unlock(&old->lock); -- cgit v1.2.3 From 480792b7bf188c29b8d4b10fee65c3a06ec5dbf7 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Fri, 15 Oct 2010 17:20:44 +0200 Subject: mtd: blktrans: kill BKL It not needed, because I already added locking for all fops methods. Signed-off-by: Maxim Levitsky Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/mtd_blkdevs.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 352831baf785..040c2d923807 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -181,7 +181,6 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode) if (!dev) return -ERESTARTSYS; /* FIXME: busy loop! -arnd*/ - lock_kernel(); mutex_lock(&dev->lock); if (dev->open++) @@ -198,7 +197,6 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode) unlock: mutex_unlock(&dev->lock); blktrans_dev_put(dev); - unlock_kernel(); return ret; } @@ -210,7 +208,6 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode) if (!dev) return ret; - lock_kernel(); mutex_lock(&dev->lock); if (--dev->open) @@ -226,7 +223,6 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode) unlock: mutex_unlock(&dev->lock); blktrans_dev_put(dev); - unlock_kernel(); return ret; } @@ -259,7 +255,6 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode, if (!dev) return ret; - lock_kernel(); mutex_lock(&dev->lock); if (!dev->mtd) @@ -274,7 +269,6 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode, } unlock: mutex_unlock(&dev->lock); - unlock_kernel(); blktrans_dev_put(dev); return ret; } -- cgit v1.2.3 From 12aebf3e1ad7dc8b076dd9674ca98f1aa6859fcd Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Fri, 15 Oct 2010 17:20:45 +0200 Subject: mtd: blktrans: fix a race vs kthread_stop There is small race window that could make kthread_stop hang forever. I found that while hacking the IR subsystem. Signed-off-by: Maxim Levitsky Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/mtd_blkdevs.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers') diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 040c2d923807..a919587ed481 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -133,6 +133,10 @@ static int mtd_blktrans_thread(void *arg) if (!req && !(req = blk_fetch_request(rq))) { set_current_state(TASK_INTERRUPTIBLE); + + if (kthread_should_stop()) + set_current_state(TASK_RUNNING); + spin_unlock_irq(rq->queue_lock); schedule(); spin_lock_irq(rq->queue_lock); -- cgit v1.2.3 From 9bf70717a589b4b7f866d733b48554a04ea4f6e8 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Fri, 15 Oct 2010 17:20:46 +0200 Subject: mtd: r852: remove useless pci powerup/down from suspend/resume routines It turns out that pci core now handles these, so this code is redundant and can even cause bugs Signed-off-by: Maxim Levitsky Signed-off-by: David Woodhouse --- drivers/mtd/nand/r852.c | 30 +----------------------------- drivers/mtd/nand/r852.h | 2 -- 2 files changed, 1 insertion(+), 31 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c index 5169ca6a66bc..d9d7efbc77cc 100644 --- a/drivers/mtd/nand/r852.c +++ b/drivers/mtd/nand/r852.c @@ -757,11 +757,6 @@ static irqreturn_t r852_irq(int irq, void *data) spin_lock_irqsave(&dev->irqlock, flags); - /* We can recieve shared interrupt while pci is suspended - in that case reads will return 0xFFFFFFFF.... */ - if (dev->insuspend) - goto out; - /* handle card detection interrupts first */ card_status = r852_read_reg(dev, R852_CARD_IRQ_STA); r852_write_reg(dev, R852_CARD_IRQ_STA, card_status); @@ -1035,7 +1030,6 @@ void r852_shutdown(struct pci_dev *pci_dev) int r852_suspend(struct device *device) { struct r852_device *dev = pci_get_drvdata(to_pci_dev(device)); - unsigned long flags; if (dev->ctlreg & R852_CTL_CARDENABLE) return -EBUSY; @@ -1047,43 +1041,22 @@ int r852_suspend(struct device *device) r852_disable_irqs(dev); r852_engine_disable(dev); - spin_lock_irqsave(&dev->irqlock, flags); - dev->insuspend = 1; - spin_unlock_irqrestore(&dev->irqlock, flags); - - /* At that point, even if interrupt handler is running, it will quit */ - /* So wait for this to happen explictly */ - synchronize_irq(dev->irq); - /* If card was pulled off just during the suspend, which is very unlikely, we will remove it on resume, it too late now anyway... */ dev->card_unstable = 0; - - pci_save_state(to_pci_dev(device)); - return pci_prepare_to_sleep(to_pci_dev(device)); + return 0; } int r852_resume(struct device *device) { struct r852_device *dev = pci_get_drvdata(to_pci_dev(device)); - unsigned long flags; - - /* Turn on the hardware */ - pci_back_from_sleep(to_pci_dev(device)); - pci_restore_state(to_pci_dev(device)); r852_disable_irqs(dev); r852_card_update_present(dev); r852_engine_disable(dev); - /* Now its safe for IRQ to run */ - spin_lock_irqsave(&dev->irqlock, flags); - dev->insuspend = 0; - spin_unlock_irqrestore(&dev->irqlock, flags); - - /* If card status changed, just do the work */ if (dev->card_detected != dev->card_registred) { dbg("card was %s during low power state", @@ -1121,7 +1094,6 @@ MODULE_DEVICE_TABLE(pci, r852_pci_id_tbl); SIMPLE_DEV_PM_OPS(r852_pm_ops, r852_suspend, r852_resume); - static struct pci_driver r852_pci_driver = { .name = DRV_NAME, .id_table = r852_pci_id_tbl, diff --git a/drivers/mtd/nand/r852.h b/drivers/mtd/nand/r852.h index 8096cc280c73..e6a21d9d22c6 100644 --- a/drivers/mtd/nand/r852.h +++ b/drivers/mtd/nand/r852.h @@ -140,8 +140,6 @@ struct r852_device { /* interrupt handling */ spinlock_t irqlock; /* IRQ protecting lock */ int irq; /* irq num */ - int insuspend; /* device is suspended */ - /* misc */ void *tmp_buffer; /* temporary buffer */ uint8_t ctlreg; /* cached contents of control reg */ -- cgit v1.2.3 From 334e5f56f176e19f7a85c23152bd7901d2991380 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Fri, 15 Oct 2010 17:20:47 +0200 Subject: mtd: sm_ftl: cosmetic, use bool when possible I didn't know that kernel allows use of that typedef. Signed-off-by: Maxim Levitsky Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/sm_ftl.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/sm_ftl.h b/drivers/mtd/sm_ftl.h index e30e48e7f63d..43bb7300785b 100644 --- a/drivers/mtd/sm_ftl.h +++ b/drivers/mtd/sm_ftl.h @@ -20,7 +20,7 @@ struct ftl_zone { - int initialized; + bool initialized; int16_t *lba_to_phys_table; /* LBA to physical table */ struct kfifo free_sectors; /* queue of free sectors */ }; @@ -37,8 +37,8 @@ struct sm_ftl { int zone_count; /* number of zones */ int max_lba; /* maximum lba in a zone */ int smallpagenand; /* 256 bytes/page nand */ - int readonly; /* is FS readonly */ - int unstable; + bool readonly; /* is FS readonly */ + bool unstable; int cis_block; /* CIS block location */ int cis_boffset; /* CIS offset in the block */ int cis_page_offset; /* CIS offset in the page */ @@ -49,7 +49,7 @@ struct sm_ftl { int cache_zone; /* zone of cached block */ unsigned char *cache_data; /* cached block data */ long unsigned int cache_data_invalid_bitmap; - int cache_clean; + bool cache_clean; struct work_struct flush_work; struct timer_list timer; -- cgit v1.2.3 From cdcf12b211d45bd68acae9d8189275d29d500d12 Mon Sep 17 00:00:00 2001 From: Jon Povey Date: Thu, 30 Sep 2010 20:41:34 +0900 Subject: mtd: nand: fix MTD_MODE_RAW writes RAW writes were broken by 782ce79a45b3b850b108896fcf7da26754061c8f which introduced a check of ops->ooboffs in nand_do_write_ops(). When writing in RAW mode this is called with an ops struct on the stack of mtdchar.c:mtd_write() which does not initialise ops->ooboffs, so it is garbage and fails this test. This test does not make sense if ops->oobbuf is NULL, which it is in the RAW write path, so include that in the test. Signed-off-by: Jon Povey Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 53f4e41836f1..1f75a1b1f7c3 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2214,7 +2214,7 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, memset(chip->oob_poi, 0xff, mtd->oobsize); /* Don't allow multipage oob writes with offset */ - if (ops->ooboffs && (ops->ooboffs + ops->ooblen > oobmaxlen)) + if (oob && ops->ooboffs && (ops->ooboffs + ops->ooblen > oobmaxlen)) return -EINVAL; while (1) { -- cgit v1.2.3 From 2316d3bc95ff65b7c0c40c70db83455912cf0328 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Wed, 20 Oct 2010 17:31:02 +0900 Subject: mtd: OneNAND: S5PC110: Fix double call suspend & resume function The suspend & resume called from mtd core. So no need to call at driver. Signed-off-by: Kyungmin Park Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/onenand/samsung.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/onenand/samsung.c b/drivers/mtd/onenand/samsung.c index 214ed1e763b6..0de7a05e6de0 100644 --- a/drivers/mtd/onenand/samsung.c +++ b/drivers/mtd/onenand/samsung.c @@ -1098,7 +1098,7 @@ static int s3c_pm_ops_suspend(struct device *dev) struct onenand_chip *this = mtd->priv; this->wait(mtd, FL_PM_SUSPENDED); - return mtd->suspend(mtd); + return 0; } static int s3c_pm_ops_resume(struct device *dev) @@ -1107,7 +1107,6 @@ static int s3c_pm_ops_resume(struct device *dev) struct mtd_info *mtd = platform_get_drvdata(pdev); struct onenand_chip *this = mtd->priv; - mtd->resume(mtd); this->unlock_all(mtd); return 0; } -- cgit v1.2.3 From 1cd844fe43cb6464b34dea504930c1a15e4ad38d Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Wed, 20 Oct 2010 10:39:22 -0700 Subject: mtd: phram: use KBUILD_MODNAME Use the more standard #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt No change in output strings. Signed-off-by: Joe Perches Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/devices/phram.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c index 1696bbecaa7e..52393282eaf1 100644 --- a/drivers/mtd/devices/phram.c +++ b/drivers/mtd/devices/phram.c @@ -15,7 +15,7 @@ * phram=swap,64Mi,128Mi phram=test,900Mi,1Mi */ -#define pr_fmt(fmt) "phram: " fmt +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include #include -- cgit v1.2.3 From 3ab8f2a2e7011c5e83363b42950757e46ef06824 Mon Sep 17 00:00:00 2001 From: Roy Zang Date: Mon, 18 Oct 2010 15:22:31 +0800 Subject: P4080/eLBC: Make Freescale elbc interrupt common to elbc devices Move Freescale elbc interrupt from nand driver to elbc driver. Then all elbc devices can use the interrupt instead of ONLY nand. For former nand driver, it had the two functions: 1. detecting nand flash partitions; 2. registering elbc interrupt. Now, second function is removed to fsl_lbc.c. Signed-off-by: Lan Chunhe-B25806 Signed-off-by: Roy Zang Reviewed-by: Anton Vorontsov Cc: Wood Scott-B07421 Signed-off-by: David Woodhouse --- drivers/mtd/nand/Kconfig | 1 + drivers/mtd/nand/fsl_elbc_nand.c | 482 ++++++++++++++++----------------------- 2 files changed, 198 insertions(+), 285 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index a494cce704b9..8229802b4346 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -451,6 +451,7 @@ config MTD_NAND_ORION config MTD_NAND_FSL_ELBC tristate "NAND support for Freescale eLBC controllers" depends on PPC_OF + select FSL_LBC help Various Freescale chips, including the 8313, include a NAND Flash Controller Module with built-in hardware ECC capabilities. diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index 80de0bff6c3a..cd8de29e38cc 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -1,9 +1,11 @@ /* Freescale Enhanced Local Bus Controller NAND driver * - * Copyright (c) 2006-2007 Freescale Semiconductor + * Copyright © 2006-2007, 2010 Freescale Semiconductor * * Authors: Nick Spence , * Scott Wood + * Jack Lan + * Roy Zang * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -27,6 +29,7 @@ #include #include #include +#include #include #include @@ -42,14 +45,12 @@ #define ERR_BYTE 0xFF /* Value returned for read bytes when read failed */ #define FCM_TIMEOUT_MSECS 500 /* Maximum number of mSecs to wait for FCM */ -struct fsl_elbc_ctrl; - /* mtd information per set */ struct fsl_elbc_mtd { struct mtd_info mtd; struct nand_chip chip; - struct fsl_elbc_ctrl *ctrl; + struct fsl_lbc_ctrl *ctrl; struct device *dev; int bank; /* Chip select bank number */ @@ -58,18 +59,12 @@ struct fsl_elbc_mtd { unsigned int fmr; /* FCM Flash Mode Register value */ }; -/* overview of the fsl elbc controller */ +/* Freescale eLBC FCM controller infomation */ -struct fsl_elbc_ctrl { +struct fsl_elbc_fcm_ctrl { struct nand_hw_control controller; struct fsl_elbc_mtd *chips[MAX_BANKS]; - /* device info */ - struct device *dev; - struct fsl_lbc_regs __iomem *regs; - int irq; - wait_queue_head_t irq_wait; - unsigned int irq_status; /* status read from LTESR by irq handler */ u8 __iomem *addr; /* Address of assigned FCM buffer */ unsigned int page; /* Last page written to / read from */ unsigned int read_bytes; /* Number of bytes read during command */ @@ -79,6 +74,7 @@ struct fsl_elbc_ctrl { unsigned int mdr; /* UPM/FCM Data Register value */ unsigned int use_mdr; /* Non zero if the MDR is to be set */ unsigned int oob; /* Non zero if operating on OOB data */ + unsigned int counter; /* counter for the initializations */ char *oob_poi; /* Place to write ECC after read back */ }; @@ -164,11 +160,12 @@ static void set_addr(struct mtd_info *mtd, int column, int page_addr, int oob) { struct nand_chip *chip = mtd->priv; struct fsl_elbc_mtd *priv = chip->priv; - struct fsl_elbc_ctrl *ctrl = priv->ctrl; + struct fsl_lbc_ctrl *ctrl = priv->ctrl; struct fsl_lbc_regs __iomem *lbc = ctrl->regs; + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = ctrl->nand; int buf_num; - ctrl->page = page_addr; + elbc_fcm_ctrl->page = page_addr; out_be32(&lbc->fbar, page_addr >> (chip->phys_erase_shift - chip->page_shift)); @@ -185,16 +182,18 @@ static void set_addr(struct mtd_info *mtd, int column, int page_addr, int oob) buf_num = page_addr & 7; } - ctrl->addr = priv->vbase + buf_num * 1024; - ctrl->index = column; + elbc_fcm_ctrl->addr = priv->vbase + buf_num * 1024; + elbc_fcm_ctrl->index = column; /* for OOB data point to the second half of the buffer */ if (oob) - ctrl->index += priv->page_size ? 2048 : 512; + elbc_fcm_ctrl->index += priv->page_size ? 2048 : 512; - dev_vdbg(ctrl->dev, "set_addr: bank=%d, ctrl->addr=0x%p (0x%p), " + dev_vdbg(priv->dev, "set_addr: bank=%d, " + "elbc_fcm_ctrl->addr=0x%p (0x%p), " "index %x, pes %d ps %d\n", - buf_num, ctrl->addr, priv->vbase, ctrl->index, + buf_num, elbc_fcm_ctrl->addr, priv->vbase, + elbc_fcm_ctrl->index, chip->phys_erase_shift, chip->page_shift); } @@ -205,18 +204,19 @@ static int fsl_elbc_run_command(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv; struct fsl_elbc_mtd *priv = chip->priv; - struct fsl_elbc_ctrl *ctrl = priv->ctrl; + struct fsl_lbc_ctrl *ctrl = priv->ctrl; + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = ctrl->nand; struct fsl_lbc_regs __iomem *lbc = ctrl->regs; /* Setup the FMR[OP] to execute without write protection */ out_be32(&lbc->fmr, priv->fmr | 3); - if (ctrl->use_mdr) - out_be32(&lbc->mdr, ctrl->mdr); + if (elbc_fcm_ctrl->use_mdr) + out_be32(&lbc->mdr, elbc_fcm_ctrl->mdr); - dev_vdbg(ctrl->dev, + dev_vdbg(priv->dev, "fsl_elbc_run_command: fmr=%08x fir=%08x fcr=%08x\n", in_be32(&lbc->fmr), in_be32(&lbc->fir), in_be32(&lbc->fcr)); - dev_vdbg(ctrl->dev, + dev_vdbg(priv->dev, "fsl_elbc_run_command: fbar=%08x fpar=%08x " "fbcr=%08x bank=%d\n", in_be32(&lbc->fbar), in_be32(&lbc->fpar), @@ -229,19 +229,18 @@ static int fsl_elbc_run_command(struct mtd_info *mtd) /* wait for FCM complete flag or timeout */ wait_event_timeout(ctrl->irq_wait, ctrl->irq_status, FCM_TIMEOUT_MSECS * HZ/1000); - ctrl->status = ctrl->irq_status; - + elbc_fcm_ctrl->status = ctrl->irq_status; /* store mdr value in case it was needed */ - if (ctrl->use_mdr) - ctrl->mdr = in_be32(&lbc->mdr); + if (elbc_fcm_ctrl->use_mdr) + elbc_fcm_ctrl->mdr = in_be32(&lbc->mdr); - ctrl->use_mdr = 0; + elbc_fcm_ctrl->use_mdr = 0; - if (ctrl->status != LTESR_CC) { - dev_info(ctrl->dev, + if (elbc_fcm_ctrl->status != LTESR_CC) { + dev_info(priv->dev, "command failed: fir %x fcr %x status %x mdr %x\n", in_be32(&lbc->fir), in_be32(&lbc->fcr), - ctrl->status, ctrl->mdr); + elbc_fcm_ctrl->status, elbc_fcm_ctrl->mdr); return -EIO; } @@ -251,7 +250,7 @@ static int fsl_elbc_run_command(struct mtd_info *mtd) static void fsl_elbc_do_read(struct nand_chip *chip, int oob) { struct fsl_elbc_mtd *priv = chip->priv; - struct fsl_elbc_ctrl *ctrl = priv->ctrl; + struct fsl_lbc_ctrl *ctrl = priv->ctrl; struct fsl_lbc_regs __iomem *lbc = ctrl->regs; if (priv->page_size) { @@ -284,15 +283,16 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, { struct nand_chip *chip = mtd->priv; struct fsl_elbc_mtd *priv = chip->priv; - struct fsl_elbc_ctrl *ctrl = priv->ctrl; + struct fsl_lbc_ctrl *ctrl = priv->ctrl; + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = ctrl->nand; struct fsl_lbc_regs __iomem *lbc = ctrl->regs; - ctrl->use_mdr = 0; + elbc_fcm_ctrl->use_mdr = 0; /* clear the read buffer */ - ctrl->read_bytes = 0; + elbc_fcm_ctrl->read_bytes = 0; if (command != NAND_CMD_PAGEPROG) - ctrl->index = 0; + elbc_fcm_ctrl->index = 0; switch (command) { /* READ0 and READ1 read the entire buffer to use hardware ECC. */ @@ -301,7 +301,7 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, /* fall-through */ case NAND_CMD_READ0: - dev_dbg(ctrl->dev, + dev_dbg(priv->dev, "fsl_elbc_cmdfunc: NAND_CMD_READ0, page_addr:" " 0x%x, column: 0x%x.\n", page_addr, column); @@ -309,8 +309,8 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, out_be32(&lbc->fbcr, 0); /* read entire page to enable ECC */ set_addr(mtd, 0, page_addr, 0); - ctrl->read_bytes = mtd->writesize + mtd->oobsize; - ctrl->index += column; + elbc_fcm_ctrl->read_bytes = mtd->writesize + mtd->oobsize; + elbc_fcm_ctrl->index += column; fsl_elbc_do_read(chip, 0); fsl_elbc_run_command(mtd); @@ -318,14 +318,14 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, /* READOOB reads only the OOB because no ECC is performed. */ case NAND_CMD_READOOB: - dev_vdbg(ctrl->dev, + dev_vdbg(priv->dev, "fsl_elbc_cmdfunc: NAND_CMD_READOOB, page_addr:" " 0x%x, column: 0x%x.\n", page_addr, column); out_be32(&lbc->fbcr, mtd->oobsize - column); set_addr(mtd, column, page_addr, 1); - ctrl->read_bytes = mtd->writesize + mtd->oobsize; + elbc_fcm_ctrl->read_bytes = mtd->writesize + mtd->oobsize; fsl_elbc_do_read(chip, 1); fsl_elbc_run_command(mtd); @@ -333,7 +333,7 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, /* READID must read all 5 possible bytes while CEB is active */ case NAND_CMD_READID: - dev_vdbg(ctrl->dev, "fsl_elbc_cmdfunc: NAND_CMD_READID.\n"); + dev_vdbg(priv->dev, "fsl_elbc_cmdfunc: NAND_CMD_READID.\n"); out_be32(&lbc->fir, (FIR_OP_CM0 << FIR_OP0_SHIFT) | (FIR_OP_UA << FIR_OP1_SHIFT) | @@ -341,9 +341,9 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, out_be32(&lbc->fcr, NAND_CMD_READID << FCR_CMD0_SHIFT); /* 5 bytes for manuf, device and exts */ out_be32(&lbc->fbcr, 5); - ctrl->read_bytes = 5; - ctrl->use_mdr = 1; - ctrl->mdr = 0; + elbc_fcm_ctrl->read_bytes = 5; + elbc_fcm_ctrl->use_mdr = 1; + elbc_fcm_ctrl->mdr = 0; set_addr(mtd, 0, 0, 0); fsl_elbc_run_command(mtd); @@ -351,7 +351,7 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, /* ERASE1 stores the block and page address */ case NAND_CMD_ERASE1: - dev_vdbg(ctrl->dev, + dev_vdbg(priv->dev, "fsl_elbc_cmdfunc: NAND_CMD_ERASE1, " "page_addr: 0x%x.\n", page_addr); set_addr(mtd, 0, page_addr, 0); @@ -359,7 +359,7 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, /* ERASE2 uses the block and page address from ERASE1 */ case NAND_CMD_ERASE2: - dev_vdbg(ctrl->dev, "fsl_elbc_cmdfunc: NAND_CMD_ERASE2.\n"); + dev_vdbg(priv->dev, "fsl_elbc_cmdfunc: NAND_CMD_ERASE2.\n"); out_be32(&lbc->fir, (FIR_OP_CM0 << FIR_OP0_SHIFT) | @@ -374,8 +374,8 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, (NAND_CMD_ERASE2 << FCR_CMD2_SHIFT)); out_be32(&lbc->fbcr, 0); - ctrl->read_bytes = 0; - ctrl->use_mdr = 1; + elbc_fcm_ctrl->read_bytes = 0; + elbc_fcm_ctrl->use_mdr = 1; fsl_elbc_run_command(mtd); return; @@ -383,14 +383,12 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, /* SEQIN sets up the addr buffer and all registers except the length */ case NAND_CMD_SEQIN: { __be32 fcr; - dev_vdbg(ctrl->dev, - "fsl_elbc_cmdfunc: NAND_CMD_SEQIN/PAGE_PROG, " + dev_vdbg(priv->dev, + "fsl_elbc_cmdfunc: NAND_CMD_SEQIN/PAGE_PROG, " "page_addr: 0x%x, column: 0x%x.\n", page_addr, column); - ctrl->column = column; - ctrl->oob = 0; - ctrl->use_mdr = 1; + elbc_fcm_ctrl->use_mdr = 1; fcr = (NAND_CMD_STATUS << FCR_CMD1_SHIFT) | (NAND_CMD_SEQIN << FCR_CMD2_SHIFT) | @@ -420,7 +418,7 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, /* OOB area --> READOOB */ column -= mtd->writesize; fcr |= NAND_CMD_READOOB << FCR_CMD0_SHIFT; - ctrl->oob = 1; + elbc_fcm_ctrl->oob = 1; } else { WARN_ON(column != 0); /* First 256 bytes --> READ0 */ @@ -429,24 +427,24 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, } out_be32(&lbc->fcr, fcr); - set_addr(mtd, column, page_addr, ctrl->oob); + set_addr(mtd, column, page_addr, elbc_fcm_ctrl->oob); return; } /* PAGEPROG reuses all of the setup from SEQIN and adds the length */ case NAND_CMD_PAGEPROG: { int full_page; - dev_vdbg(ctrl->dev, + dev_vdbg(priv->dev, "fsl_elbc_cmdfunc: NAND_CMD_PAGEPROG " - "writing %d bytes.\n", ctrl->index); + "writing %d bytes.\n", elbc_fcm_ctrl->index); /* if the write did not start at 0 or is not a full page * then set the exact length, otherwise use a full page * write so the HW generates the ECC. */ - if (ctrl->oob || ctrl->column != 0 || - ctrl->index != mtd->writesize + mtd->oobsize) { - out_be32(&lbc->fbcr, ctrl->index); + if (elbc_fcm_ctrl->oob || elbc_fcm_ctrl->column != 0 || + elbc_fcm_ctrl->index != mtd->writesize + mtd->oobsize) { + out_be32(&lbc->fbcr, elbc_fcm_ctrl->index); full_page = 0; } else { out_be32(&lbc->fbcr, 0); @@ -458,21 +456,21 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, /* Read back the page in order to fill in the ECC for the * caller. Is this really needed? */ - if (full_page && ctrl->oob_poi) { + if (full_page && elbc_fcm_ctrl->oob_poi) { out_be32(&lbc->fbcr, 3); set_addr(mtd, 6, page_addr, 1); - ctrl->read_bytes = mtd->writesize + 9; + elbc_fcm_ctrl->read_bytes = mtd->writesize + 9; fsl_elbc_do_read(chip, 1); fsl_elbc_run_command(mtd); - memcpy_fromio(ctrl->oob_poi + 6, - &ctrl->addr[ctrl->index], 3); - ctrl->index += 3; + memcpy_fromio(elbc_fcm_ctrl->oob_poi + 6, + &elbc_fcm_ctrl->addr[elbc_fcm_ctrl->index], 3); + elbc_fcm_ctrl->index += 3; } - ctrl->oob_poi = NULL; + elbc_fcm_ctrl->oob_poi = NULL; return; } @@ -485,26 +483,26 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, out_be32(&lbc->fcr, NAND_CMD_STATUS << FCR_CMD0_SHIFT); out_be32(&lbc->fbcr, 1); set_addr(mtd, 0, 0, 0); - ctrl->read_bytes = 1; + elbc_fcm_ctrl->read_bytes = 1; fsl_elbc_run_command(mtd); /* The chip always seems to report that it is * write-protected, even when it is not. */ - setbits8(ctrl->addr, NAND_STATUS_WP); + setbits8(elbc_fcm_ctrl->addr, NAND_STATUS_WP); return; /* RESET without waiting for the ready line */ case NAND_CMD_RESET: - dev_dbg(ctrl->dev, "fsl_elbc_cmdfunc: NAND_CMD_RESET.\n"); + dev_dbg(priv->dev, "fsl_elbc_cmdfunc: NAND_CMD_RESET.\n"); out_be32(&lbc->fir, FIR_OP_CM0 << FIR_OP0_SHIFT); out_be32(&lbc->fcr, NAND_CMD_RESET << FCR_CMD0_SHIFT); fsl_elbc_run_command(mtd); return; default: - dev_err(ctrl->dev, + dev_err(priv->dev, "fsl_elbc_cmdfunc: error, unsupported command 0x%x.\n", command); } @@ -524,24 +522,24 @@ static void fsl_elbc_write_buf(struct mtd_info *mtd, const u8 *buf, int len) { struct nand_chip *chip = mtd->priv; struct fsl_elbc_mtd *priv = chip->priv; - struct fsl_elbc_ctrl *ctrl = priv->ctrl; + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = priv->ctrl->nand; unsigned int bufsize = mtd->writesize + mtd->oobsize; if (len <= 0) { - dev_err(ctrl->dev, "write_buf of %d bytes", len); - ctrl->status = 0; + dev_err(priv->dev, "write_buf of %d bytes", len); + elbc_fcm_ctrl->status = 0; return; } - if ((unsigned int)len > bufsize - ctrl->index) { - dev_err(ctrl->dev, + if ((unsigned int)len > bufsize - elbc_fcm_ctrl->index) { + dev_err(priv->dev, "write_buf beyond end of buffer " "(%d requested, %u available)\n", - len, bufsize - ctrl->index); - len = bufsize - ctrl->index; + len, bufsize - elbc_fcm_ctrl->index); + len = bufsize - elbc_fcm_ctrl->index; } - memcpy_toio(&ctrl->addr[ctrl->index], buf, len); + memcpy_toio(&elbc_fcm_ctrl->addr[elbc_fcm_ctrl->index], buf, len); /* * This is workaround for the weird elbc hangs during nand write, * Scott Wood says: "...perhaps difference in how long it takes a @@ -549,9 +547,9 @@ static void fsl_elbc_write_buf(struct mtd_info *mtd, const u8 *buf, int len) * is causing problems, and sync isn't helping for some reason." * Reading back the last byte helps though. */ - in_8(&ctrl->addr[ctrl->index] + len - 1); + in_8(&elbc_fcm_ctrl->addr[elbc_fcm_ctrl->index] + len - 1); - ctrl->index += len; + elbc_fcm_ctrl->index += len; } /* @@ -562,13 +560,13 @@ static u8 fsl_elbc_read_byte(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv; struct fsl_elbc_mtd *priv = chip->priv; - struct fsl_elbc_ctrl *ctrl = priv->ctrl; + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = priv->ctrl->nand; /* If there are still bytes in the FCM, then use the next byte. */ - if (ctrl->index < ctrl->read_bytes) - return in_8(&ctrl->addr[ctrl->index++]); + if (elbc_fcm_ctrl->index < elbc_fcm_ctrl->read_bytes) + return in_8(&elbc_fcm_ctrl->addr[elbc_fcm_ctrl->index++]); - dev_err(ctrl->dev, "read_byte beyond end of buffer\n"); + dev_err(priv->dev, "read_byte beyond end of buffer\n"); return ERR_BYTE; } @@ -579,18 +577,19 @@ static void fsl_elbc_read_buf(struct mtd_info *mtd, u8 *buf, int len) { struct nand_chip *chip = mtd->priv; struct fsl_elbc_mtd *priv = chip->priv; - struct fsl_elbc_ctrl *ctrl = priv->ctrl; + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = priv->ctrl->nand; int avail; if (len < 0) return; - avail = min((unsigned int)len, ctrl->read_bytes - ctrl->index); - memcpy_fromio(buf, &ctrl->addr[ctrl->index], avail); - ctrl->index += avail; + avail = min((unsigned int)len, + elbc_fcm_ctrl->read_bytes - elbc_fcm_ctrl->index); + memcpy_fromio(buf, &elbc_fcm_ctrl->addr[elbc_fcm_ctrl->index], avail); + elbc_fcm_ctrl->index += avail; if (len > avail) - dev_err(ctrl->dev, + dev_err(priv->dev, "read_buf beyond end of buffer " "(%d requested, %d available)\n", len, avail); @@ -603,30 +602,32 @@ static int fsl_elbc_verify_buf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *chip = mtd->priv; struct fsl_elbc_mtd *priv = chip->priv; - struct fsl_elbc_ctrl *ctrl = priv->ctrl; + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = priv->ctrl->nand; int i; if (len < 0) { - dev_err(ctrl->dev, "write_buf of %d bytes", len); + dev_err(priv->dev, "write_buf of %d bytes", len); return -EINVAL; } - if ((unsigned int)len > ctrl->read_bytes - ctrl->index) { - dev_err(ctrl->dev, - "verify_buf beyond end of buffer " - "(%d requested, %u available)\n", - len, ctrl->read_bytes - ctrl->index); + if ((unsigned int)len > + elbc_fcm_ctrl->read_bytes - elbc_fcm_ctrl->index) { + dev_err(priv->dev, + "verify_buf beyond end of buffer " + "(%d requested, %u available)\n", + len, elbc_fcm_ctrl->read_bytes - elbc_fcm_ctrl->index); - ctrl->index = ctrl->read_bytes; + elbc_fcm_ctrl->index = elbc_fcm_ctrl->read_bytes; return -EINVAL; } for (i = 0; i < len; i++) - if (in_8(&ctrl->addr[ctrl->index + i]) != buf[i]) + if (in_8(&elbc_fcm_ctrl->addr[elbc_fcm_ctrl->index + i]) + != buf[i]) break; - ctrl->index += len; - return i == len && ctrl->status == LTESR_CC ? 0 : -EIO; + elbc_fcm_ctrl->index += len; + return i == len && elbc_fcm_ctrl->status == LTESR_CC ? 0 : -EIO; } /* This function is called after Program and Erase Operations to @@ -635,22 +636,22 @@ static int fsl_elbc_verify_buf(struct mtd_info *mtd, const u_char *buf, int len) static int fsl_elbc_wait(struct mtd_info *mtd, struct nand_chip *chip) { struct fsl_elbc_mtd *priv = chip->priv; - struct fsl_elbc_ctrl *ctrl = priv->ctrl; + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = priv->ctrl->nand; - if (ctrl->status != LTESR_CC) + if (elbc_fcm_ctrl->status != LTESR_CC) return NAND_STATUS_FAIL; /* The chip always seems to report that it is * write-protected, even when it is not. */ - return (ctrl->mdr & 0xff) | NAND_STATUS_WP; + return (elbc_fcm_ctrl->mdr & 0xff) | NAND_STATUS_WP; } static int fsl_elbc_chip_init_tail(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv; struct fsl_elbc_mtd *priv = chip->priv; - struct fsl_elbc_ctrl *ctrl = priv->ctrl; + struct fsl_lbc_ctrl *ctrl = priv->ctrl; struct fsl_lbc_regs __iomem *lbc = ctrl->regs; unsigned int al; @@ -665,41 +666,41 @@ static int fsl_elbc_chip_init_tail(struct mtd_info *mtd) priv->fmr |= (12 << FMR_CWTO_SHIFT) | /* Timeout > 12 ms */ (al << FMR_AL_SHIFT); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->numchips = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->numchips = %d\n", chip->numchips); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->chipsize = %lld\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->chipsize = %lld\n", chip->chipsize); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->pagemask = %8x\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->pagemask = %8x\n", chip->pagemask); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->chip_delay = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->chip_delay = %d\n", chip->chip_delay); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->badblockpos = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->badblockpos = %d\n", chip->badblockpos); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->chip_shift = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->chip_shift = %d\n", chip->chip_shift); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->page_shift = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->page_shift = %d\n", chip->page_shift); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->phys_erase_shift = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->phys_erase_shift = %d\n", chip->phys_erase_shift); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->ecclayout = %p\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->ecclayout = %p\n", chip->ecclayout); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->ecc.mode = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->ecc.mode = %d\n", chip->ecc.mode); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->ecc.steps = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->ecc.steps = %d\n", chip->ecc.steps); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->ecc.bytes = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->ecc.bytes = %d\n", chip->ecc.bytes); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->ecc.total = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->ecc.total = %d\n", chip->ecc.total); - dev_dbg(ctrl->dev, "fsl_elbc_init: nand->ecc.layout = %p\n", + dev_dbg(priv->dev, "fsl_elbc_init: nand->ecc.layout = %p\n", chip->ecc.layout); - dev_dbg(ctrl->dev, "fsl_elbc_init: mtd->flags = %08x\n", mtd->flags); - dev_dbg(ctrl->dev, "fsl_elbc_init: mtd->size = %lld\n", mtd->size); - dev_dbg(ctrl->dev, "fsl_elbc_init: mtd->erasesize = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: mtd->flags = %08x\n", mtd->flags); + dev_dbg(priv->dev, "fsl_elbc_init: mtd->size = %lld\n", mtd->size); + dev_dbg(priv->dev, "fsl_elbc_init: mtd->erasesize = %d\n", mtd->erasesize); - dev_dbg(ctrl->dev, "fsl_elbc_init: mtd->writesize = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: mtd->writesize = %d\n", mtd->writesize); - dev_dbg(ctrl->dev, "fsl_elbc_init: mtd->oobsize = %d\n", + dev_dbg(priv->dev, "fsl_elbc_init: mtd->oobsize = %d\n", mtd->oobsize); /* adjust Option Register and ECC to match Flash page size */ @@ -719,7 +720,7 @@ static int fsl_elbc_chip_init_tail(struct mtd_info *mtd) chip->badblock_pattern = &largepage_memorybased; } } else { - dev_err(ctrl->dev, + dev_err(priv->dev, "fsl_elbc_init: page size %d is not supported\n", mtd->writesize); return -1; @@ -750,18 +751,19 @@ static void fsl_elbc_write_page(struct mtd_info *mtd, const uint8_t *buf) { struct fsl_elbc_mtd *priv = chip->priv; - struct fsl_elbc_ctrl *ctrl = priv->ctrl; + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = priv->ctrl->nand; fsl_elbc_write_buf(mtd, buf, mtd->writesize); fsl_elbc_write_buf(mtd, chip->oob_poi, mtd->oobsize); - ctrl->oob_poi = chip->oob_poi; + elbc_fcm_ctrl->oob_poi = chip->oob_poi; } static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv) { - struct fsl_elbc_ctrl *ctrl = priv->ctrl; + struct fsl_lbc_ctrl *ctrl = priv->ctrl; struct fsl_lbc_regs __iomem *lbc = ctrl->regs; + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = ctrl->nand; struct nand_chip *chip = &priv->chip; dev_dbg(priv->dev, "eLBC Set Information for bank %d\n", priv->bank); @@ -790,7 +792,7 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv) chip->options = NAND_NO_READRDY | NAND_NO_AUTOINCR | NAND_USE_FLASH_BBT; - chip->controller = &ctrl->controller; + chip->controller = &elbc_fcm_ctrl->controller; chip->priv = priv; chip->ecc.read_page = fsl_elbc_read_page; @@ -815,8 +817,7 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv) static int fsl_elbc_chip_remove(struct fsl_elbc_mtd *priv) { - struct fsl_elbc_ctrl *ctrl = priv->ctrl; - + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = priv->ctrl->nand; nand_release(&priv->mtd); kfree(priv->mtd.name); @@ -824,18 +825,21 @@ static int fsl_elbc_chip_remove(struct fsl_elbc_mtd *priv) if (priv->vbase) iounmap(priv->vbase); - ctrl->chips[priv->bank] = NULL; + elbc_fcm_ctrl->chips[priv->bank] = NULL; kfree(priv); - + kfree(elbc_fcm_ctrl); return 0; } -static int __devinit fsl_elbc_chip_probe(struct fsl_elbc_ctrl *ctrl, - struct device_node *node) +static DEFINE_MUTEX(fsl_elbc_nand_mutex); + +static int __devinit fsl_elbc_nand_probe(struct platform_device *pdev) { - struct fsl_lbc_regs __iomem *lbc = ctrl->regs; + struct fsl_lbc_regs __iomem *lbc; struct fsl_elbc_mtd *priv; struct resource res; + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl; + #ifdef CONFIG_MTD_PARTITIONS static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL }; @@ -843,11 +847,18 @@ static int __devinit fsl_elbc_chip_probe(struct fsl_elbc_ctrl *ctrl, #endif int ret; int bank; + struct device *dev; + struct device_node *node = pdev->dev.of_node; + + if (!fsl_lbc_ctrl_dev || !fsl_lbc_ctrl_dev->regs) + return -ENODEV; + lbc = fsl_lbc_ctrl_dev->regs; + dev = fsl_lbc_ctrl_dev->dev; /* get, allocate and map the memory resource */ ret = of_address_to_resource(node, 0, &res); if (ret) { - dev_err(ctrl->dev, "failed to get resource\n"); + dev_err(dev, "failed to get resource\n"); return ret; } @@ -861,7 +872,7 @@ static int __devinit fsl_elbc_chip_probe(struct fsl_elbc_ctrl *ctrl, break; if (bank >= MAX_BANKS) { - dev_err(ctrl->dev, "address did not match any chip selects\n"); + dev_err(dev, "address did not match any chip selects\n"); return -ENODEV; } @@ -869,14 +880,33 @@ static int __devinit fsl_elbc_chip_probe(struct fsl_elbc_ctrl *ctrl, if (!priv) return -ENOMEM; - ctrl->chips[bank] = priv; + mutex_lock(&fsl_elbc_nand_mutex); + if (!fsl_lbc_ctrl_dev->nand) { + elbc_fcm_ctrl = kzalloc(sizeof(*elbc_fcm_ctrl), GFP_KERNEL); + if (!elbc_fcm_ctrl) { + dev_err(dev, "failed to allocate memory\n"); + mutex_unlock(&fsl_elbc_nand_mutex); + ret = -ENOMEM; + goto err; + } + elbc_fcm_ctrl->counter++; + + spin_lock_init(&elbc_fcm_ctrl->controller.lock); + init_waitqueue_head(&elbc_fcm_ctrl->controller.wq); + fsl_lbc_ctrl_dev->nand = elbc_fcm_ctrl; + } else { + elbc_fcm_ctrl = fsl_lbc_ctrl_dev->nand; + } + mutex_unlock(&fsl_elbc_nand_mutex); + + elbc_fcm_ctrl->chips[bank] = priv; priv->bank = bank; - priv->ctrl = ctrl; - priv->dev = ctrl->dev; + priv->ctrl = fsl_lbc_ctrl_dev; + priv->dev = dev; priv->vbase = ioremap(res.start, resource_size(&res)); if (!priv->vbase) { - dev_err(ctrl->dev, "failed to map chip region\n"); + dev_err(dev, "failed to map chip region\n"); ret = -ENOMEM; goto err; } @@ -933,171 +963,53 @@ err: return ret; } -static int __devinit fsl_elbc_ctrl_init(struct fsl_elbc_ctrl *ctrl) +static int fsl_elbc_nand_remove(struct platform_device *pdev) { - struct fsl_lbc_regs __iomem *lbc = ctrl->regs; - - /* - * NAND transactions can tie up the bus for a long time, so set the - * bus timeout to max by clearing LBCR[BMT] (highest base counter - * value) and setting LBCR[BMTPS] to the highest prescaler value. - */ - clrsetbits_be32(&lbc->lbcr, LBCR_BMT, 15); - - /* clear event registers */ - setbits32(&lbc->ltesr, LTESR_NAND_MASK); - out_be32(&lbc->lteatr, 0); - - /* Enable interrupts for any detected events */ - out_be32(&lbc->lteir, LTESR_NAND_MASK); - - ctrl->read_bytes = 0; - ctrl->index = 0; - ctrl->addr = NULL; - - return 0; -} - -static int fsl_elbc_ctrl_remove(struct platform_device *ofdev) -{ - struct fsl_elbc_ctrl *ctrl = dev_get_drvdata(&ofdev->dev); int i; - + struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = fsl_lbc_ctrl_dev->nand; for (i = 0; i < MAX_BANKS; i++) - if (ctrl->chips[i]) - fsl_elbc_chip_remove(ctrl->chips[i]); - - if (ctrl->irq) - free_irq(ctrl->irq, ctrl); - - if (ctrl->regs) - iounmap(ctrl->regs); - - dev_set_drvdata(&ofdev->dev, NULL); - kfree(ctrl); - return 0; -} - -/* NOTE: This interrupt is also used to report other localbus events, - * such as transaction errors on other chipselects. If we want to - * capture those, we'll need to move the IRQ code into a shared - * LBC driver. - */ - -static irqreturn_t fsl_elbc_ctrl_irq(int irqno, void *data) -{ - struct fsl_elbc_ctrl *ctrl = data; - struct fsl_lbc_regs __iomem *lbc = ctrl->regs; - __be32 status = in_be32(&lbc->ltesr) & LTESR_NAND_MASK; - - if (status) { - out_be32(&lbc->ltesr, status); - out_be32(&lbc->lteatr, 0); - - ctrl->irq_status = status; - smp_wmb(); - wake_up(&ctrl->irq_wait); - - return IRQ_HANDLED; + if (elbc_fcm_ctrl->chips[i]) + fsl_elbc_chip_remove(elbc_fcm_ctrl->chips[i]); + + mutex_lock(&fsl_elbc_nand_mutex); + elbc_fcm_ctrl->counter--; + if (!elbc_fcm_ctrl->counter) { + fsl_lbc_ctrl_dev->nand = NULL; + kfree(elbc_fcm_ctrl); } - - return IRQ_NONE; -} - -/* fsl_elbc_ctrl_probe - * - * called by device layer when it finds a device matching - * one our driver can handled. This code allocates all of - * the resources needed for the controller only. The - * resources for the NAND banks themselves are allocated - * in the chip probe function. -*/ - -static int __devinit fsl_elbc_ctrl_probe(struct platform_device *ofdev, - const struct of_device_id *match) -{ - struct device_node *child; - struct fsl_elbc_ctrl *ctrl; - int ret; - - ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL); - if (!ctrl) - return -ENOMEM; - - dev_set_drvdata(&ofdev->dev, ctrl); - - spin_lock_init(&ctrl->controller.lock); - init_waitqueue_head(&ctrl->controller.wq); - init_waitqueue_head(&ctrl->irq_wait); - - ctrl->regs = of_iomap(ofdev->dev.of_node, 0); - if (!ctrl->regs) { - dev_err(&ofdev->dev, "failed to get memory region\n"); - ret = -ENODEV; - goto err; - } - - ctrl->irq = of_irq_to_resource(ofdev->dev.of_node, 0, NULL); - if (ctrl->irq == NO_IRQ) { - dev_err(&ofdev->dev, "failed to get irq resource\n"); - ret = -ENODEV; - goto err; - } - - ctrl->dev = &ofdev->dev; - - ret = fsl_elbc_ctrl_init(ctrl); - if (ret < 0) - goto err; - - ret = request_irq(ctrl->irq, fsl_elbc_ctrl_irq, 0, "fsl-elbc", ctrl); - if (ret != 0) { - dev_err(&ofdev->dev, "failed to install irq (%d)\n", - ctrl->irq); - ret = ctrl->irq; - goto err; - } - - for_each_child_of_node(ofdev->dev.of_node, child) - if (of_device_is_compatible(child, "fsl,elbc-fcm-nand")) - fsl_elbc_chip_probe(ctrl, child); + mutex_unlock(&fsl_elbc_nand_mutex); return 0; -err: - fsl_elbc_ctrl_remove(ofdev); - return ret; } -static const struct of_device_id fsl_elbc_match[] = { - { - .compatible = "fsl,elbc", - }, +static const struct of_device_id fsl_elbc_nand_match[] = { + { .compatible = "fsl,elbc-fcm-nand", }, {} }; -static struct of_platform_driver fsl_elbc_ctrl_driver = { +static struct platform_driver fsl_elbc_nand_driver = { .driver = { - .name = "fsl-elbc", + .name = "fsl,elbc-fcm-nand", .owner = THIS_MODULE, - .of_match_table = fsl_elbc_match, + .of_match_table = fsl_elbc_nand_match, }, - .probe = fsl_elbc_ctrl_probe, - .remove = fsl_elbc_ctrl_remove, + .probe = fsl_elbc_nand_probe, + .remove = fsl_elbc_nand_remove, }; -static int __init fsl_elbc_init(void) +static int __init fsl_elbc_nand_init(void) { - return of_register_platform_driver(&fsl_elbc_ctrl_driver); + return platform_driver_register(&fsl_elbc_nand_driver); } -static void __exit fsl_elbc_exit(void) +static void __exit fsl_elbc_nand_exit(void) { - of_unregister_platform_driver(&fsl_elbc_ctrl_driver); + platform_driver_unregister(&fsl_elbc_nand_driver); } -module_init(fsl_elbc_init); -module_exit(fsl_elbc_exit); +module_init(fsl_elbc_nand_init); +module_exit(fsl_elbc_nand_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Freescale"); -- cgit v1.2.3 From 0b824d2b10eacd496c608a7c41a046862d48563b Mon Sep 17 00:00:00 2001 From: Lan Chunhe-B25806 Date: Mon, 18 Oct 2010 15:22:32 +0800 Subject: P4080/mtd: Fix the freescale lbc issue with 36bit mode When system uses 36bit physical address, res.start is 36bit physical address. But the function of in_be32 returns 32bit physical address. Then both of them compared each other is wrong. So by converting the address of res.start into the right format fixes this issue. Signed-off-by: Lan Chunhe-B25806 Signed-off-by: Roy Zang Reviewed-by: Anton Vorontsov Signed-off-by: David Woodhouse --- drivers/mtd/nand/fsl_elbc_nand.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index cd8de29e38cc..c141b07b25d1 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -868,7 +868,7 @@ static int __devinit fsl_elbc_nand_probe(struct platform_device *pdev) (in_be32(&lbc->bank[bank].br) & BR_MSEL) == BR_MS_FCM && (in_be32(&lbc->bank[bank].br) & in_be32(&lbc->bank[bank].or) & BR_BA) - == res.start) + == fsl_lbc_addr(res.start)) break; if (bank >= MAX_BANKS) { -- cgit v1.2.3 From 89a82280a8e632b7a5b0ce70dd5bccfa2d3bc2c5 Mon Sep 17 00:00:00 2001 From: Nicolas Kaiser Date: Fri, 22 Oct 2010 12:47:24 +0200 Subject: block2mtd: dubious assignment When block2mtd_erase fails, a duplicated assignment instantly changes instr->state from MTD_ERASE_FAILED to MTD_ERASE_DONE. It looks to me like this might not be intended, or is it? Signed-off-by: Nicolas Kaiser Acked-By: Joern Engel Signed-off-by: David Woodhouse --- drivers/mtd/devices/block2mtd.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c index 93651865ddbe..2cf0cc6a4189 100644 --- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -91,7 +91,6 @@ static int block2mtd_erase(struct mtd_info *mtd, struct erase_info *instr) } else instr->state = MTD_ERASE_DONE; - instr->state = MTD_ERASE_DONE; mtd_erase_callback(instr); return err; } -- cgit v1.2.3 From b5d194ceaeffce637e88be153794d1c963738ea9 Mon Sep 17 00:00:00 2001 From: Guillaume LECERF Date: Tue, 26 Oct 2010 10:55:29 +0100 Subject: mtd: cfi_cmdset_0001: use defined value of P_ID_INTEL_PERFORMANCE instead of hardcoded one Signed-off-by: Guillaume LECERF Signed-off-by: David Woodhouse --- drivers/mtd/chips/cfi_cmdset_0001.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index 9e2b7e9e0ad9..ad9268b44416 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -1496,7 +1496,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, switch (mode) { case FL_WRITING: - write_cmd = (cfi->cfiq->P_ID != 0x0200) ? CMD(0x40) : CMD(0x41); + write_cmd = (cfi->cfiq->P_ID != P_ID_INTEL_PERFORMANCE) ? CMD(0x40) : CMD(0x41); break; case FL_OTP_WRITE: write_cmd = CMD(0xc0); @@ -1661,7 +1661,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, cmd_adr = adr & ~(wbufsize-1); /* Let's determine this according to the interleave only once */ - write_cmd = (cfi->cfiq->P_ID != 0x0200) ? CMD(0xe8) : CMD(0xe9); + write_cmd = (cfi->cfiq->P_ID != P_ID_INTEL_PERFORMANCE) ? CMD(0xe8) : CMD(0xe9); mutex_lock(&chip->mutex); ret = get_chip(map, chip, cmd_adr, FL_WRITING); -- cgit v1.2.3 From fc61015f72808f2fd83657909d02f4d29404b8c6 Mon Sep 17 00:00:00 2001 From: Guillaume LECERF Date: Tue, 26 Oct 2010 10:26:26 +0100 Subject: mtd: cfi_util: add support for switching SST 39VF640xB chips into QRY mode Signed-off-by: Guillaume LECERF Signed-off-by: David Woodhouse --- drivers/mtd/chips/cfi_util.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers') diff --git a/drivers/mtd/chips/cfi_util.c b/drivers/mtd/chips/cfi_util.c index e503b2ca894d..360525c637d2 100644 --- a/drivers/mtd/chips/cfi_util.c +++ b/drivers/mtd/chips/cfi_util.c @@ -75,6 +75,13 @@ int __xipram cfi_qry_mode_on(uint32_t base, struct map_info *map, cfi_send_gen_cmd(0xAA, 0x5555, base, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x55, 0x2AAA, base, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x98, 0x5555, base, map, cfi, cfi->device_type, NULL); + if (cfi_qry_present(map, base, cfi)) + return 1; + /* SST 39VF640xB */ + cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); + cfi_send_gen_cmd(0xAA, 0x555, base, map, cfi, cfi->device_type, NULL); + cfi_send_gen_cmd(0x55, 0x2AA, base, map, cfi, cfi->device_type, NULL); + cfi_send_gen_cmd(0x98, 0x555, base, map, cfi, cfi->device_type, NULL); if (cfi_qry_present(map, base, cfi)) return 1; /* QRY not found */ -- cgit v1.2.3 From 9fc05fcadadcf3d6ddfe288e2e5c7ad0773b2abf Mon Sep 17 00:00:00 2001 From: Guillaume LECERF Date: Tue, 26 Oct 2010 11:31:55 +0100 Subject: mtd: cfi_cmdset_0002: add CFI detection for SST 38VF640x chips Add support for SST38VF640x chips in CFI mode. Signed-off-by: Guillaume LECERF Signed-off-by: yidong zhang Signed-off-by: David Woodhouse --- drivers/mtd/chips/cfi_cmdset_0002.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'drivers') diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 19344763fc56..eb8ce0cf2855 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -293,6 +293,21 @@ static void fixup_sst39vf_rev_b(struct mtd_info *mtd, void *param) cfi->addr_unlock2 = 0x2AA; } +static void fixup_sst38vf640x_sectorsize(struct mtd_info *mtd, void *param) +{ + struct map_info *map = mtd->priv; + struct cfi_private *cfi = map->fldrv_priv; + + fixup_sst39vf_rev_b(mtd, param); + + /* + * CFI reports 1024 sectors (0x03ff+1) of 64KBytes (0x0100*256) where + * it should report a size of 8KBytes (0x0020*256). + */ + cfi->cfiq->EraseRegionInfo[0] = 0x002003ff; + pr_warning("%s: Bad 38VF640x CFI data; adjusting sector size from 64 to 8KiB\n", mtd->name); +} + static void fixup_s29gl064n_sectors(struct mtd_info *mtd, void *param) { struct map_info *map = mtd->priv; @@ -344,6 +359,10 @@ static struct cfi_fixup cfi_fixup_table[] = { { CFI_MFR_AMD, 0x1301, fixup_s29gl064n_sectors, NULL, }, { CFI_MFR_AMD, 0x1a00, fixup_s29gl032n_sectors, NULL, }, { CFI_MFR_AMD, 0x1a01, fixup_s29gl032n_sectors, NULL, }, + { CFI_MFR_SST, 0x536A, fixup_sst38vf640x_sectorsize, NULL, }, /* SST38VF6402 */ + { CFI_MFR_SST, 0x536B, fixup_sst38vf640x_sectorsize, NULL, }, /* SST38VF6401 */ + { CFI_MFR_SST, 0x536C, fixup_sst38vf640x_sectorsize, NULL, }, /* SST38VF6404 */ + { CFI_MFR_SST, 0x536D, fixup_sst38vf640x_sectorsize, NULL, }, /* SST38VF6403 */ #if !FORCE_WORD_WRITE { CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers, NULL, }, #endif @@ -374,6 +393,13 @@ static void cfi_fixup_major_minor(struct cfi_private *cfi, if (cfi->mfr == CFI_MFR_SAMSUNG && cfi->id == 0x257e && extp->MajorVersion == '0') extp->MajorVersion = '1'; + /* + * SST 38VF640x chips report major=0xFF / minor=0xFF. + */ + if (cfi->mfr == CFI_MFR_SST && (cfi->id >> 4) == 0x0536) { + extp->MajorVersion = '1'; + extp->MinorVersion = '0'; + } } struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) -- cgit v1.2.3 From 08968041bef437ec363623cd3218c2b083537ada Mon Sep 17 00:00:00 2001 From: Guillaume LECERF Date: Tue, 26 Oct 2010 10:45:23 +0100 Subject: mtd: cfi_cmdset_0002: make sector erase command variable Some old SST chips use 0x50 as sector erase command, instead of 0x30. Make this value variable to handle such chips. Signed-off-by: Guillaume LECERF Acked-by: Wolfram Sang Signed-off-by: David Woodhouse --- drivers/mtd/chips/cfi_cmdset_0002.c | 10 ++++++---- drivers/mtd/chips/cfi_probe.c | 2 ++ 2 files changed, 8 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index eb8ce0cf2855..288fc2ea8494 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -291,6 +291,8 @@ static void fixup_sst39vf_rev_b(struct mtd_info *mtd, void *param) cfi->addr_unlock1 = 0x555; cfi->addr_unlock2 = 0x2AA; + + cfi->sector_erase_cmd = CMD(0x50); } static void fixup_sst38vf640x_sectorsize(struct mtd_info *mtd, void *param) @@ -691,7 +693,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr * there was an error (so leave the erase * routine to recover from it) or we trying to * use the erase-in-progress sector. */ - map_write(map, CMD(0x30), chip->in_progress_block_addr); + map_write(map, cfi->sector_erase_cmd, chip->in_progress_block_addr); chip->state = FL_ERASING; chip->oldstate = FL_READY; printk(KERN_ERR "MTD %s(): chip not ready after erase suspend\n", __func__); @@ -744,7 +746,7 @@ static void put_chip(struct map_info *map, struct flchip *chip, unsigned long ad switch(chip->oldstate) { case FL_ERASING: chip->state = chip->oldstate; - map_write(map, CMD(0x30), chip->in_progress_block_addr); + map_write(map, cfi->sector_erase_cmd, chip->in_progress_block_addr); chip->oldstate = FL_READY; chip->state = FL_ERASING; break; @@ -887,7 +889,7 @@ static void __xipram xip_udelay(struct map_info *map, struct flchip *chip, local_irq_disable(); /* Resume the write or erase operation */ - map_write(map, CMD(0x30), adr); + map_write(map, cfi->sector_erase_cmd, adr); chip->state = oldstate; start = xip_currtime(); } else if (usec >= 1000000/HZ) { @@ -1670,7 +1672,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, cfi_send_gen_cmd(0x80, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL); - map_write(map, CMD(0x30), adr); + map_write(map, cfi->sector_erase_cmd, adr); chip->state = FL_ERASING; chip->erase_suspended = 0; diff --git a/drivers/mtd/chips/cfi_probe.c b/drivers/mtd/chips/cfi_probe.c index 8f5b96aa87a0..d25535279404 100644 --- a/drivers/mtd/chips/cfi_probe.c +++ b/drivers/mtd/chips/cfi_probe.c @@ -177,6 +177,8 @@ static int __xipram cfi_chip_setup(struct map_info *map, cfi->cfi_mode = CFI_MODE_CFI; + cfi->sector_erase_cmd = CMD(0x30); + /* Read the CFI info structure */ xip_disable_qry(base, map, cfi); for (i=0; i<(sizeof(struct cfi_ident) + num_erase_regions * 4); i++) -- cgit v1.2.3 From 6411bf6cdfe9b444bc3aa0c23f8cf35460d69432 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Tue, 26 Oct 2010 11:42:51 +0100 Subject: Revert "mtd: cleanup Kconfig dependencies" This reverts commit 432dc821c90114f9b0e00f6752a700e937516ade. The individual CFI geometry options were carefully set up to get sane default values if the CFI_ADV_OPTIONS wasn't set, and it wasn't appropriate to move them into an if/endif block. Signed-off-by: David Woodhouse --- drivers/mtd/chips/Kconfig | 46 ++++++++++++++++++++++++---------------------- 1 file changed, 24 insertions(+), 22 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/chips/Kconfig b/drivers/mtd/chips/Kconfig index baac35339172..35c6a23b183b 100644 --- a/drivers/mtd/chips/Kconfig +++ b/drivers/mtd/chips/Kconfig @@ -1,4 +1,5 @@ menu "RAM/ROM/Flash chip drivers" + depends on MTD!=n config MTD_CFI tristate "Detect flash chips by Common Flash Interface (CFI) probe" @@ -26,10 +27,9 @@ config MTD_JEDECPROBE config MTD_GEN_PROBE tristate -if MTD_GEN_PROBE - config MTD_CFI_ADV_OPTIONS bool "Flash chip driver advanced configuration options" + depends on MTD_GEN_PROBE help If you need to specify a specific endianness for access to flash chips, or if you wish to reduce the size of the kernel by including @@ -39,10 +39,9 @@ config MTD_CFI_ADV_OPTIONS If unsure, say 'N'. -if MTD_CFI_ADV_OPTIONS - choice prompt "Flash cmd/query data swapping" + depends on MTD_CFI_ADV_OPTIONS default MTD_CFI_NOSWAP config MTD_CFI_NOSWAP @@ -73,6 +72,7 @@ endchoice config MTD_CFI_GEOMETRY bool "Specific CFI Flash geometry selection" + depends on MTD_CFI_ADV_OPTIONS help This option does not affect the code directly, but will enable some other configuration options which would allow you to reduce @@ -80,78 +80,81 @@ config MTD_CFI_GEOMETRY arrangements of CFI chips. If unsure, say 'N' and all options which are supported by the current code will be enabled. -if MTD_CFI_GEOMETRY - config MTD_MAP_BANK_WIDTH_1 - bool "Support 8-bit buswidth" + bool "Support 8-bit buswidth" if MTD_CFI_GEOMETRY default y help If you wish to support CFI devices on a physical bus which is 8 bits wide, say 'Y'. config MTD_MAP_BANK_WIDTH_2 - bool "Support 16-bit buswidth" + bool "Support 16-bit buswidth" if MTD_CFI_GEOMETRY default y help If you wish to support CFI devices on a physical bus which is 16 bits wide, say 'Y'. config MTD_MAP_BANK_WIDTH_4 - bool "Support 32-bit buswidth" + bool "Support 32-bit buswidth" if MTD_CFI_GEOMETRY default y help If you wish to support CFI devices on a physical bus which is 32 bits wide, say 'Y'. config MTD_MAP_BANK_WIDTH_8 - bool "Support 64-bit buswidth" + bool "Support 64-bit buswidth" if MTD_CFI_GEOMETRY + default n help If you wish to support CFI devices on a physical bus which is 64 bits wide, say 'Y'. config MTD_MAP_BANK_WIDTH_16 - bool "Support 128-bit buswidth" + bool "Support 128-bit buswidth" if MTD_CFI_GEOMETRY + default n help If you wish to support CFI devices on a physical bus which is 128 bits wide, say 'Y'. config MTD_MAP_BANK_WIDTH_32 - bool "Support 256-bit buswidth" + bool "Support 256-bit buswidth" if MTD_CFI_GEOMETRY + default n help If you wish to support CFI devices on a physical bus which is 256 bits wide, say 'Y'. config MTD_CFI_I1 - bool "Support 1-chip flash interleave" + bool "Support 1-chip flash interleave" if MTD_CFI_GEOMETRY default y help If your flash chips are not interleaved - i.e. you only have one flash chip addressed by each bus cycle, then say 'Y'. config MTD_CFI_I2 - bool "Support 2-chip flash interleave" + bool "Support 2-chip flash interleave" if MTD_CFI_GEOMETRY default y help If your flash chips are interleaved in pairs - i.e. you have two flash chips addressed by each bus cycle, then say 'Y'. config MTD_CFI_I4 - bool "Support 4-chip flash interleave" + bool "Support 4-chip flash interleave" if MTD_CFI_GEOMETRY + default n help If your flash chips are interleaved in fours - i.e. you have four flash chips addressed by each bus cycle, then say 'Y'. config MTD_CFI_I8 - bool "Support 8-chip flash interleave" + bool "Support 8-chip flash interleave" if MTD_CFI_GEOMETRY + default n help If your flash chips are interleaved in eights - i.e. you have eight flash chips addressed by each bus cycle, then say 'Y'. -endif # MTD_CFI_GEOMETRY - config MTD_OTP bool "Protection Registers aka one-time programmable (OTP) bits" + depends on MTD_CFI_ADV_OPTIONS select HAVE_MTD_OTP + default n help This enables support for reading, writing and locking so called "Protection Registers" present on some flash chips. @@ -173,10 +176,9 @@ config MTD_OTP This feature should therefore be used with extreme care. Any mistake in the programming of OTP bits will waste them. -endif # MTD_CFI_ADV_OPTIONS - config MTD_CFI_INTELEXT tristate "Support for Intel/Sharp flash chips" + depends on MTD_GEN_PROBE select MTD_CFI_UTIL help The Common Flash Interface defines a number of different command @@ -186,6 +188,7 @@ config MTD_CFI_INTELEXT config MTD_CFI_AMDSTD tristate "Support for AMD/Fujitsu/Spansion flash chips" + depends on MTD_GEN_PROBE select MTD_CFI_UTIL help The Common Flash Interface defines a number of different command @@ -195,14 +198,13 @@ config MTD_CFI_AMDSTD config MTD_CFI_STAA tristate "Support for ST (Advanced Architecture) flash chips" + depends on MTD_GEN_PROBE select MTD_CFI_UTIL help The Common Flash Interface defines a number of different command sets which a CFI-compliant chip may claim to implement. This code provides support for one of those command sets. -endif # MTD_GEN_PROBE - config MTD_CFI_UTIL tristate -- cgit v1.2.3 From 6fe4c590313133ebd5dadb769031489ff178ece1 Mon Sep 17 00:00:00 2001 From: Frank Li Date: Tue, 26 Oct 2010 11:02:19 +0800 Subject: MTD: Fix wrong check register_blkdev return value register_blkdev return 1..255 when major = 0. if (ret ) { printk(KERN_WARNING "Unable to register %s block device on major %d: %d\n", tr->name, tr->major, ret); mutex_unlock(&mtd_table_mutex); return ret; } Above code will return fail when register_blkdev return allocated major number. Signed-off-by: Frank Li Signed-off-by: David Woodhouse --- drivers/mtd/mtd_blkdevs.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index a919587ed481..63790e975d20 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -502,13 +502,16 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr) mutex_lock(&mtd_table_mutex); ret = register_blkdev(tr->major, tr->name); - if (ret) { + if (ret < 0) { printk(KERN_WARNING "Unable to register %s block device on major %d: %d\n", tr->name, tr->major, ret); mutex_unlock(&mtd_table_mutex); return ret; } + if (ret) + tr->major = ret; + tr->blkshift = ffs(tr->blksize) - 1; INIT_LIST_HEAD(&tr->devs); -- cgit v1.2.3 From 8cc9de3ebdf654601db51a516267dff89c49acc3 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Sat, 30 Oct 2010 12:39:21 +0100 Subject: mtd: Remove redundant mutex from mtd_blkdevs.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In commit 2a48fc0ab24241755dc93bfd4f01d68efab47f5a ('block: autoconvert trivial BKL users to private mutex'), Arnd replaced the BKL usage with a mutex. However, Maxim has already provided a better fix in commit 480792b7bf188c29b8d4b10fee65c3a06ec5dbf7 ('mtd: blktrans: kill BKL'), which was simply to remove the BKL without replacing it — since he'd already made it do all necessary locking for itself. Signed-off-by: David Woodhouse --- drivers/mtd/mtd_blkdevs.c | 7 ------- 1 file changed, 7 deletions(-) (limited to 'drivers') diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index f9329794f3b5..cb20c67995d8 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -37,7 +37,6 @@ #include "mtdcore.h" -static DEFINE_MUTEX(mtd_blkdevs_mutex); static LIST_HEAD(blktrans_majors); static DEFINE_MUTEX(blktrans_ref_mutex); @@ -185,7 +184,6 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode) if (!dev) return -ERESTARTSYS; /* FIXME: busy loop! -arnd*/ - mutex_lock(&mtd_blkdevs_mutex); mutex_lock(&dev->lock); if (dev->open++) @@ -202,7 +200,6 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode) unlock: mutex_unlock(&dev->lock); blktrans_dev_put(dev); - mutex_unlock(&mtd_blkdevs_mutex); return ret; } @@ -214,7 +211,6 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode) if (!dev) return ret; - mutex_lock(&mtd_blkdevs_mutex); mutex_lock(&dev->lock); if (--dev->open) @@ -230,7 +226,6 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode) unlock: mutex_unlock(&dev->lock); blktrans_dev_put(dev); - mutex_unlock(&mtd_blkdevs_mutex); return ret; } @@ -263,7 +258,6 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode, if (!dev) return ret; - mutex_lock(&mtd_blkdevs_mutex); mutex_lock(&dev->lock); if (!dev->mtd) @@ -278,7 +272,6 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode, } unlock: mutex_unlock(&dev->lock); - mutex_unlock(&mtd_blkdevs_mutex); blktrans_dev_put(dev); return ret; } -- cgit v1.2.3 From 40847437f15221b5822ba70550e8b9fcccfb9bb3 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Fri, 29 Oct 2010 21:04:19 -0700 Subject: mtd: fix build error in m25p80.c While building an x86 distro kernel, I hit the following: Kernel: arch/x86/boot/bzImage is ready (#7) ERROR: "of_mtd_parse_partitions" [drivers/mtd/devices/m25p80.ko] undefined! of_mtd_parse_partitions is defined with MTD_OF_PARTS, and that's only built on PPC and microblaze. The code in question should be wrapped w/ a stricter #ifdef. Signed-off-by: Andres Salomon Acked-by: Grant Likely Signed-off-by: David Woodhouse --- drivers/mtd/devices/m25p80.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 669d2b7e36bb..bf5a002209bd 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -928,7 +928,7 @@ static int __devinit m25p_probe(struct spi_device *spi) nr_parts = data->nr_parts; } -#ifdef CONFIG_OF +#ifdef CONFIG_MTD_OF_PARTS if (nr_parts <= 0 && spi->dev.of_node) { nr_parts = of_mtd_parse_partitions(&spi->dev, spi->dev.of_node, &parts); -- cgit v1.2.3