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path: root/drivers/mtd/nand
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* mtd: support reading OOB without ECCBrian Norris2011-09-11
| | | | | | | | | | | | | | | | | | | | | | This fixes issues with `nanddump -n' and the MEMREADOOB[64] ioctls on hardware that performs error correction when reading only OOB data. A driver for such hardware needs to know when we're doing a RAW vs. a normal write, but mtd_do_read_oob does not pass such information to the lower layers (e.g., NAND). We should pass MTD_OOB_RAW or MTD_OOB_PLACE based on the MTD file mode. For now, most drivers can get away with just setting: chip->ecc.read_oob_raw = chip->ecc.read_oob This is done by default; but for systems that behave as described above, you must supply your own replacement function. This was tested with nandsim as well as on actual SLC NAND. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: Jim Quinlan <jim2101024@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: support writing OOB without ECCBrian Norris2011-09-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes issues with `nandwrite -n -o' and the MEMWRITEOOB[64] ioctls on hardware that writes ECC when writing OOB. The problem arises as follows: `nandwrite -n' can write page data to flash without applying ECC, but when used with the `-o' option, ECC is applied (incorrectly), contrary to the `--noecc' option. I found that this is the case because my hardware computes and writes ECC data to flash upon either OOB write or page write. Thus, to support a proper "no ECC" write, my driver must know when we're performing a raw OOB write vs. a normal ECC OOB write. However, MTD does not pass any raw mode information to the write_oob functions. This patch addresses the problems by: 1) Passing MTD_OOB_RAW down to lower layers, instead of just defaulting to MTD_OOB_PLACE 2) Handling MTD_OOB_RAW within the NAND layer's `nand_do_write_oob' 3) Adding a new (replaceable) function pointer in struct ecc_ctrl; this function should support writing OOB without ECC data. Current hardware often can use the same OOB write function when writing either with or without ECC This was tested with nandsim as well as on actual SLC NAND. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: Jim Quinlan <jim2101024@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: add the common code for GPMI-NAND controller driverHuang Shijie2011-09-11
| | | | | | | | | These files contain the common code for the GPMI-NAND driver. Signed-off-by: Huang Shijie <b32955@freescale.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Tested-by: Koen Beel <koen.beel@barco.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: add GPMI-NAND driver in the config and MakefileHuang Shijie2011-09-11
| | | | | | | | | add the GPMI-NAND driver in the relevant Kconfig and Makefile in the MTD. Signed-off-by: Huang Shijie <b32955@freescale.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Tested-by: Koen Beel <koen.beel@barco.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: add helper functions library and header files for GPMI NAND driverHuang Shijie2011-09-11
| | | | | | | | | | | bch-regs.h : registers file for BCH module gpmi-regs.h: registers file for GPMI module gpmi-lib.c: helper functions library. Signed-off-by: Huang Shijie <b32955@freescale.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Tested-by: Koen Beel <koen.beel@barco.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: mxc_nand: add mx53 NFC driver supportJason Liu2011-09-11
| | | | | | | | This has already been tested with Samsung NAND: K9LAG08U0M on MX53EVK board, ubi/ubifs has already been tested OK too. Signed-off-by: Jason Liu <jason.hui@linaro.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: bcm_umi_nand: clean up error handling codeJulia Lawall2011-09-11
| | | | | | | | | Convert error handling code to use gotos. At the same time, this adds calls to kfree and iounmap in a few cases where they were overlooked. Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Jiandong Zheng <jdzheng@broadcom.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: eLBC NAND: update ecc_stats.corrected when lteccr availableMichael Hench2011-09-11
| | | | | | Signed-off-by: Michael Hench <MichaelHench@gmail.com> Acked-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: s3c2410 nand: Remove uncessary null checkJonghwan Choi2011-09-11
| | | | | | | clk_get() return a pointer to the struct clk or an ERR_PTR(). Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: use MTD_NAND_OMAP2 for OMAP4Jan Weitzel2011-09-11
| | | | | | | | use MTD_NAND_OMAP2 also for OMAP4 arch. testes with omap4430 Signed-off-by: Jan Weitzel <j.weitzel@phytec.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: cleanup style on pr_debug messagesBrian Norris2011-09-11
| | | | | Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: replace DEBUG() with pr_debug()Brian Norris2011-09-11
| | | | | | | | | | | | | | Start moving away from the MTD_DEBUG_LEVEL messages. The dynamic debugging feature is a generic kernel feature that provides more flexibility. (See Documentation/dynamic-debug-howto.txt) Also fix some punctuation, indentation, and capitalization that went along with the affected lines. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: nand: style fixups in pr_* messagesBrian Norris2011-09-11
| | | | | | | | This is a cleanup of some punctuation, indentation, and capitalization on the lines affected affected by the last patch. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: nand: convert printk() to pr_*()Brian Norris2011-09-11
| | | | | | | | | | | | | Instead of directly calling printk, it's simpler to use the built-in pr_* functions. This shortens code and allows easy customization through the definition of a pr_fmt() macro (not used currently). Ideally, we could implement much of this with dev_* functions, but the MTD subsystem does not necessarily register all its master `mtd_info.dev` device, so we cannot use dev_* consistently. See: http://lists.infradead.org/pipermail/linux-mtd/2011-July/036950.html Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: nand: change KERN_DEBUG to KERN_INFOBrian Norris2011-09-11
| | | | | | | | | | | | Soon we will change many printk statements into pr_* statements, i.e., 'printk(KERN_INFO, ...)' becomes 'pr_info(...)'. However, this means that KERN_DEBUG messages will become pr_debug() statements and therefore will not be activated by default - they must be enabled using dynamic debug. So, for important DEBUG messages, we will simply upgrade these to INFO so that they appear by default. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: pxa3xx_nand: enable multiple chip select supportLei Wen2011-09-11
| | | | | | | | | | | | | | | Current pxa3xx_nand controller has two chip select which both be workable. This patch enable this feature. Update platform driver to support this feature. Another notice should be taken that: When you want to use this feature, you should not enable the keep configuration feature, for two chip select could be attached with different nand chip. The different page size and timing requirement make the keep configuration impossible. Signed-off-by: Lei Wen <leiwen@marvell.com>
* mtd: pxa3xx_nand: sperate each chip individual infoLei Wen2011-09-11
| | | | | | | For support two chip select, we seperate chip specific info in this patch. Signed-off-by: Lei Wen <leiwen@marvell.com>
* mtd: pxa3xx_nand: convert all printk into dev_*Lei Wen2011-09-11
| | | | | | | Also add missed warning message. Signed-off-by: Lei Wen <leiwen@marvell.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
* mtd: pxa3xx_nand: enhance suspend and resume routineLei Wen2011-09-11
| | | | | | | | | This patch add protection on the suspend&resume path to prevent some unexpected behavior, like interrupt occur at the very second of resume back and it don't follow normal command path, which lead to bug. Signed-off-by: Lei Wen <leiwen@marvell.com>
* mtd: eLBC NAND: remove elbc_fcm_ctrl->oob_poiMike Hench2011-09-11
| | | | | | | | | | | The eLBC NAND driver currently follows up each program/write operation with a read-back of the page, in order to [ostensibly] fill in ECC data for the caller. However, the page address used for this read is always -1, so the read will never work correctly. Remove this useless (and potentially problematic) block of code. Signed-off-by: Matthew L. Creech <mlcreech@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: atmel_nand: optimize read/write buffer functionsNicolas Ferre2011-09-11
| | | | | | | | | | For PIO NAND access functions, we use the features of the SMC: - no need to take into account the NAND bus width: SMC will deal with this - use of an IO memcpy on the NAND chip-select space is able to generate proper SMC behavior. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: nand: don't free the global data too earlyLiu Shuo2011-09-11
| | | | | | | | | The global data fsl_lbc_ctrl_dev->nand don't have to be freed in fsl_elbc_chip_remove(). The right place to do that is in fsl_elbc_nand_remove() if elbc_fcm_ctrl->counter is zero. Signed-off-by: Liu Shuo <b35362@freescale.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: fsl_upm: fix a memory leak in fun_chip_init error pathAxel Lin2011-09-11
| | | | | Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: atmel_nand: fix wrong use of 0 as NULLNicolas Ferre2011-09-11
| | | | | | | | | Fixing this error: atmel_nand.c:718:20: warning: Using plain integer as NULL pointer Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: nand_flash_detect_onfi propagate busw infoMatthieu CASTET2011-09-11
| | | | | | | | | there is a bug in nand_flash_detect_onfi, busw need to be passed by pointer to return it. Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com> Acked-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: nand: ignore ECC errors for simple BBM scansBrian Norris2011-09-11
| | | | | | | | | | | | Now that nand_do_readoob() may return -EUCLEAN or -EBADMSG on ECC errors, we need to handle the return value specially in some cases. When scanning for simple bad block markers, reacting to an ECC error is not very useful, as we assume that the relevant markers are still non-0xFF for true bad blocks. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: nand: handle ECC errors in OOBBrian Norris2011-09-11
| | | | | | | | | | | | | | | | | While the standard NAND OOB functions do not do ECC on the spare area, it is possible for a driver to supply its own OOB ECC functions (e.g., HW ECC). nand_do_read_oob should act like nand_do_read_ops in checking the ECC stats and returning -EBADMSG or -EUCLEAN on uncorrectable errors or correctable bitflips, respectively. These error codes could be used in flash-based BBT code or in YAFFS, for example. Doing this, however, messes with the behavior of mtd_do_readoob. Now, mtd_do_readoob should check whether we had -EUCLEAN or -EBADMSG errors and discard those as "non-fatal" so that the ioctls can still succeed with (possibly uncorrected) data. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* mtd: spelling, capitalization, uniformityBrian Norris2011-09-11
| | | | | | | | | | | | | | | | | | | | Therefor -> Therefore [Intern], [Internal] -> [INTERN] [REPLACABLE] -> [REPLACEABLE] syndrom, syndom -> syndrome ecc -> ECC buswith -> buswidth endianess -> endianness dont -> don't occures -> occurs independend -> independent wihin -> within erease -> erase blockes -> blocks ... Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* mtd: nand: drop edb7312 supportDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | EDB7312 isn't supported by mainline kernel, so drop it now. If the board support will ever be submitted to mainline, one can revert this commit. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* mtd: socrates_nand.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: ndfc.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: mpc5121_nfc.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: fsl_upm.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: fsl_elbc_nand.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: socrates_nand: use ofpart through generic parsingDmitry Eremin-Solenikov2011-09-11
| | | | | | | | Convert the driver to use ofpart partitions parsing through the generic parse_mtd_partitions(). Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: ndfc: use ofpart through generic parsingDmitry Eremin-Solenikov2011-09-11
| | | | | | | | Convert the driver to use ofpart partitions parsing through the generic parse_mtd_partitions(). Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: mpc5121_nfc: use ofpart through generic parsingDmitry Eremin-Solenikov2011-09-11
| | | | | | | | Convert the driver to use ofpart partitions parsing through the generic parse_mtd_partitions(). Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: fsl_upm: use ofpart through generic parsingDmitry Eremin-Solenikov2011-09-11
| | | | | | | | Convert the driver to use ofpart partitions parsing through the generic parse_mtd_partitions(). Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: fsl_elbc_nand: use ofpart through generic parsingDmitry Eremin-Solenikov2011-09-11
| | | | | | | | Convert the driver to use ofpart partitions parsing through the generic parse_mtd_partitions(). Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
* mtd: nand_base: always initialise oob_poi before writing OOB dataTHOMSON, Adam (Adam)2011-09-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In nand_do_write_ops() code it is possible for a caller to provide ops.oobbuf populated and ops.mode == MTD_OOB_AUTO, which currently means that the chip->oob_poi buffer isn't initialised to all 0xFF. The nand_fill_oob() method then carries out the task of copying the provided OOB data to oob_poi, but with MTD_OOB_AUTO it skips areas marked as unavailable by the layout struct, including the bad block marker bytes. An example of this causing issues is when the last OOB data read was from the start of a bad block where the markers are not 0xFF, and the caller wishes to write new OOB data at the beginning of another block. In this scenario the caller would provide OOB data, but nand_fill_oob() would skip the bad block marker bytes in oob_poi before copying the OOB data provided by the caller. This means that when the OOB data is written back to NAND, the block is inadvertently marked as bad without the caller knowing. This has been witnessed when using YAFFS2 where tags are stored in the OOB. To avoid this oob_poi is always initialised to 0xFF to make sure no left over data is inadvertently written back to the OOB area. Credits to Brian Norris <computersforpeace@gmail.com> for fixing this patch. Signed-off-by: Adam Thomson <adam.thomson@alcatel-lucent.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com> Cc: stable@kernel.org [2.6.20+]
* mtd: txx9ndfmc.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* mtd: tmio_nand.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* mtd: sharpsl.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* mtd: s3c2410.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* mtd: pxa3xx_nand.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* mtd: ppchameleonevb.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* mtd: plat_nand.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* mtd: orion_nand.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* mtd: omap2.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* mtd: mxc_nand.c: use mtd_device_parse_registerDmitry Eremin-Solenikov2011-09-11
| | | | | | | | | Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>