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2011-07-22Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubi-2.6: UBI: clarify the volume notification types' doc UBI: remove dead code UBI: dump stack when switching to R/O mode UBI: fix oops in error path UBI: switch debugging tests knobs to debugfs UBI: make it possible to use struct ubi_device in debug.h UBI: prepare debugging stuff to further debugfs conversion UBI: use debugfs for the extra checks knobs UBI: change the interface of a debugging check function
2011-06-23UBI: clarify the volume notification types' docDavid Wagner
I realized the new descriptions of ADDED and REMOVED could also be misleading: they can also be triggered after using a userland util (ubi{mk,rm}vol). Artem: amend the commentaries Signed-off-by David Wagner <david.wagner@free-electrons.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
2011-06-01mtd: fix physmap.h warningsRandy Dunlap
Fix build warnings in physmap.h: include/linux/mtd/physmap.h:25: warning: 'struct platform_device' declared inside parameter list include/linux/mtd/physmap.h:25: warning: its scope is only this definition or declaration, which is probably not what you want include/linux/mtd/physmap.h:26: warning: 'struct platform_device' declared inside parameter list include/linux/mtd/physmap.h:27: warning: 'struct platform_device' declared inside parameter list Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-27Merge git://git.infradead.org/mtd-2.6Linus Torvalds
* git://git.infradead.org/mtd-2.6: (97 commits) mtd: kill CONFIG_MTD_PARTITIONS mtd: remove add_mtd_partitions, add_mtd_device and friends mtd: convert remaining users to mtd_device_register() mtd: samsung onenand: convert to mtd_device_register() mtd: omap2 onenand: convert to mtd_device_register() mtd: txx9ndfmc: convert to mtd_device_register() mtd: tmio_nand: convert to mtd_device_register() mtd: socrates_nand: convert to mtd_device_register() mtd: sharpsl: convert to mtd_device_register() mtd: s3c2410 nand: convert to mtd_device_register() mtd: ppchameleonevb: convert to mtd_device_register() mtd: orion_nand: convert to mtd_device_register() mtd: omap2: convert to mtd_device_register() mtd: nomadik_nand: convert to mtd_device_register() mtd: ndfc: convert to mtd_device_register() mtd: mxc_nand: convert to mtd_device_register() mtd: mpc5121_nfc: convert to mtd_device_register() mtd: jz4740_nand: convert to mtd_device_register() mtd: h1910: convert to mtd_device_register() mtd: fsmc_nand: convert to mtd_device_register() ... Fixed up trivial conflicts in - drivers/mtd/maps/integrator-flash.c: removed in ARM tree - drivers/mtd/maps/physmap.c: addition of afs partition probe type clashing with removal of CONFIG_MTD_PARTITIONS
2011-05-25mtd: kill CONFIG_MTD_PARTITIONSJamie Iles
Now that none of the drivers use CONFIG_MTD_PARTITIONS we can remove it from Kconfig and the last remaining uses. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: remove add_mtd_partitions, add_mtd_device and friendsJamie Iles
These symbols are replaced with mtd_device_register() (and removal with mtd_device_unregister()) for public registration. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: physmap: convert to mtd_device_register()Jamie Iles
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: provide of_mtd_parse_partitions for !CONFIG_MTD_OF_PARTSJamie Iles
If we don't have OpenFirmware enabled then provide a stub of_mtd_parse_partitions that returns no partitions so drivers don't need ifdeffery inside. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: introduce mtd_device_(un)register()Jamie Iles
To prepare for the removal of add_mtd_device and add_mtd_partitions(), introduce mtd_device_register(). This will create partitions if they are supplied or register the whole device if there are no partitions. Once all drivers are converted to use mtd_device_register(), add_mtd_device() and add_mtd_partitions() will be made internal only. v2: move kerneldoc to implementation file and fixup some kerneldoc warnings. Artem: tweak comments: remove junk tabs, use dots consistently. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: create function to perform large allocationsGrant Erickson
Introduce a common function to handle large, contiguous kmalloc buffer allocations by exponentially backing off on the size of the requested kernel transfer buffer until it succeeds or until the requested transfer buffer size falls below the page size. This helps ensure the operation can succeed under low-memory, highly- fragmented situations albeit somewhat more slowly. Artem: so this patch solves the problem that the kernel tries to kmalloc too large buffers, which (a) may fail and does fail - people complain about this, and (b) slows down the system in case of high memory fragmentation, because the kernel starts dropping caches, writing back, swapping, etc. But we do not really have to allocate a lot of memory to do the I/O, we may do this even with as little as one min. I/O unit (NAND page) of RAM. So the idea of this patch is that if the user asks to read or write a lot, we try to kmalloc a lot, with GFP flags which make the kernel _not_ drop caches, etc. If we can allocate it - good, if not - we try to allocate twice as less, and so on, until we reach the min. I/O unit size, which is our last resort allocation and use the normal GFP_KERNEL flag. Artem: re-write the allocation function so that it makes sure the allocated buffer is aligned to the min. I/O size of the flash. Signed-off-by: Grant Erickson <marathon96@gmail.com> Tested-by: Ben Gardiner <bengardiner@nanometrics.ca> Tested-by: Stefano Babic <sbabic@denx.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: nand: renumber conflicting BBT flagsBrian Norris
The NAND_USE_FLASH_BBT_NO_OOB and NAND_CREATE_EMPTY_BBT flags conflict with the NAND_BBT_SCANBYTE1AND6 and NAND_BBT_DYNAMICSTRUCT flags, respectively. This change will allow us to utilize these options independently. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-24Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubi-2.6: UBI: switch to dynamic printks UBI: turn some macros into static inline UBI: improve checking in debugging prints UBI: fix typo in a message UBI: fix minor stylistic issues UBI: use __packed instead of __attribute__((packed)) UBI: cleanup comments around volume properties UBI: re-name set volume properties ioctl UBI: make the control character device non-seekable
2011-05-20ARM: 6910/1: MTD: physmap: let set_vpp() pass a platform_device instead of a ↵Marc Zyngier
map_info The set_vpp() method provided by physmap passes a map_info back to the platform code, which has little relevance as far as the platform is concerned (this parameter is completely unused). Instead, pass the platform_device, which can be used in the pismo driver to retrieve some important information in a nicer way, instead of the hack that was in place. The empty set_vpp function in board-at572d940hf_ek.c is left untouched, as the board/SoC is scheduled for removal. Cc: Andrew Victor <linux@maxim.org.za> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Ben Dooks <ben-linux@fluff.org> Acked-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20ARM: 6904/1: MTD: Add integrator-flash feature to physmapMarc Zyngier
In the process of moving platforms away from integrator-flash (aka armflash), add to physmap the few features that make armflash unique: - optionnal probing for the AFS partition type - init() and exit() methods, used by Integrator to control write access to the various onboard programmable components Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-14UBI: fix minor stylistic issuesArtem Bityutskiy
Fix checkpatch.pl errors and warnings: * space before tab * line over 80 characters * include linux/ioctl.h instead of asm/ioctl.h Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-03-31Fix common misspellingsLucas De Marchi
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-25Merge branch 'master' of ↵Artem Bityutskiy
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus-1 * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6: (9356 commits) [media] rc: update for bitop name changes fs: simplify iget & friends fs: pull inode->i_lock up out of writeback_single_inode fs: rename inode_lock to inode_hash_lock fs: move i_wb_list out from under inode_lock fs: move i_sb_list out from under inode_lock fs: remove inode_lock from iput_final and prune_icache fs: Lock the inode LRU list separately fs: factor inode disposal fs: protect inode->i_state with inode->i_lock lib, arch: add filter argument to show_mem and fix private implementations SLUB: Write to per cpu data when allocating it slub: Fix debugobjects with lockless fastpath autofs4: Do not potentially dereference NULL pointer returned by fget() in autofs_dev_ioctl_setpipefd() autofs4 - remove autofs4_lock autofs4 - fix d_manage() return on rcu-walk autofs4 - fix autofs4_expire_indirect() traversal autofs4 - fix dentry leak in autofs4_expire_direct() autofs4 - reinstate last used update on access vfs - check non-mountpoint dentry might block in __follow_mount_rcu() ... NOTE! This merge commit was created to fix compilation error. The block tree was merged upstream and removed the 'elv_queue_empty()' function which the new 'mtdswap' driver is using. So a simple merge of the mtd tree with upstream does not compile. And the mtd tree has already be published, so re-basing it is not an option. To fix this unfortunate situation, I had to merge upstream into the mtd-2.6.git tree without committing, put the fixup patch on top of this, and then commit this. The result is that we do not have commits which do not compile. In other words, this merge commit "merges" 3 things: the MTD tree, the upstream tree, and the fixup patch.
2011-03-18Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubifs-2.6: (25 commits) UBIFS: clean-up commentaries UBIFS: save 128KiB or more RAM UBIFS: allocate orphans scan buffer on demand UBIFS: allocate lpt dump buffer on demand UBIFS: allocate ltab checking buffer on demand UBIFS: allocate scanning buffer on demand UBIFS: allocate dump buffer on demand UBIFS: do not check data crc by default UBIFS: simplify UBIFS Kconfig menu UBIFS: print max. index node size UBIFS: handle allocation failures in UBIFS write path UBIFS: use max_write_size during recovery UBIFS: use max_write_size for write-buffers UBIFS: introduce write-buffer size field UBI: incorporate LEB offset information UBIFS: incorporate maximum write size UBI: provide LEB offset information UBI: incorporate maximum write size UBIFS: fix LEB number in printk UBIFS: restrict world-writable debugfs files ...
2011-03-11mtd: nand: add software BCH ECC supportIvan Djelic
This patch adds software BCH ECC support to mtd, in order to handle recent NAND device ecc requirements (4 bits or more). It does so by adding a new ecc mode (NAND_ECC_SOFT_BCH) for use by board drivers, and a new Kconfig option to enable BCH support. It relies on the generic BCH library introduced in a previous patch. When a board driver uses mode NAND_ECC_SOFT_BCH, it should also set fields chip->ecc.size and chip->ecc.bytes to select BCH ecc data size and required error correction capability. See nand_bch_init() documentation for details. It has been tested on the following platforms using mtd-utils, UBI and UBIFS: x86 (with nandsim), arm926ejs. Signed-off-by: Ivan Djelic <ivan.djelic@parrot.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: cfi: add support for AMIC flashes (e.g. A29L160AT)Steffen Sledz
Signed-off-by: Steffen Sledz <sledz@dresearch.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: onenand: add new option to control initial onenand unlockingRoman Tereshonkov
A new option ONENAND_SKIP_INITIAL_UNLOCKING is added. This allows to disable initial onenand unlocking when the driver is initialized. Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: NOR flash driver for OMAP-L137/AM17xDavid Griego
OMAP-L137/AM17x has limited number of dedicated EMIFA address pins, enough to interface directly to an SDRAM. If a device such as an asynchronous flash needs to be attached to the EMIFA, then either GPIO pins or a chip select may be used to control the flash device's upper address lines. This patch adds support for the NOR flash on the OMAP-L137/ AM17x user interface daughter board using the latch-addr-flash MTD mapping driver which allows flashes to be partially physically addressed. The upper address lines are set by a board specific code which is a separate patch. Signed-off-by: David Griego <dgriego@mvista.com> Signed-off-by: Aleksey Makarov <amakarov@ru.mvista.com> Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Savinay Dharmappa <savinay.dharmappa@ti.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd_blkdevs: Add background processing supportJarkko Lavinen
Add a new background method into mtd_blktrans_ops, add background support into mtd_blktrans_thread(), and add mtd_blktrans_cease_background(). If the mtd blktrans dev has the background support, the thread will call background function when the request queue becomes empty. The background operation may run as long as needs to until mtd_blktrans_cease_background() tells to stop. Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com> Tested-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-08UBI: provide LEB offset informationArtem Bityutskiy
Provide the LEB offset information in the UBI device information data structure. This piece of information is required by UBIFS to find out what are the LEB offsets which are aligned to the max. write size. If LEB offset not aligned to max. write size, then UBIFS has to take this into account to write more optimally. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-03-08UBI: incorporate maximum write sizeArtem Bityutskiy
Incorporate MTD write buffer size into UBI device information because UBIFS needs this field. UBI does not use it ATM, just provides to upper layers in 'struct ubi_device_info'. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-02-17OMAP: OneNAND: fix 104MHz supportAdrian Hunter
104MHz needs a latency of 8 clock cycles and the VHF flag must be set. Also t_rdyo is specified as "not applicable" so pick a lower value, and force at least 1 clk between AVD High to OE Low. Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-01-06mtd: add writebufsize field to mtd_info structAnatolij Gustschin
This field will be used to indicate the write buffer size of the MTD device. UBI will set it's minimal I/O unit size (min_io_size) to the indicated write buffer size. By this change we intend to fix failed recovery of UBIFS partitions we currently observe on NOR flash when mounting the partition after unclean unmount. Currently the min_io_size is set to mtd->writesize (which is 1 byte for NOR flash). But flash programming is often done from prepared write buffer containing multiple bytes and is performed in one programming operation which could be interrupted by a power cut or a system reset causing corrupted (partially written) areas in a flash sector. Knowing the size of potentially corrupted areas UBIFS scanning and recovery algorithms are able to perform successful recovery. In case of NOR flash minimal I/O size must be equal to the maximal size of the write buffer used by embedded flash programming algorithm. In case of NAND flash mtd->writebufsize should be equivalent to mtd->writesize. The subsequent patches will add mtd->writebufsize initialization where needed. Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-01-06mtd: OneNAND: add enable / disable methods to onenand_chipAdrian Hunter
Add enable / disable methods called from get_device() / release_device(). These can be used, for example, to allow the driver to prevent the voltage regulator from being put to sleep while OneNAND is in use. Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03mtd: FSMC NAND fix obvious speling errorsLinus Walleij
Fix spelling in the interface file. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03mtd: FSMC NAND use the PrimeCell identifier macrosLinus Walleij
The FSMC actually has a standard ARM PrimeCell ID register, and the "revision" part of that register contains the thing that the code is looking at. Reuse the infrastructure from the AMBA bus abstraction and rid local defines. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03mtd: fix master device identification for mtd repartitionRoman Tereshonkov
Function mtd_has_master renamed as mtd_is_partition to follow the function logic. The patch fixes the problem of checking the right mtd device for partition creation. To delete partition checking is not needed here so as it is done in mtd_del_partition. By master we consider the mtd device which does not belong to any partition. Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03mtd: fix nand kernel-doc warningsRandy Dunlap
Warning(include/linux/mtd/nand.h:543): No description found for parameter 'badblockbits' Warning(drivers/mtd/nand/nand_bbt.c:1101): No description found for parameter 'mtd' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: linux-mtd@lists.infradead.org Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03mtd: cfi_fixup: remove unused 'param' parameterGuillaume LECERF
The 'param' parameter has never been used since its introduction, so simply remove it. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03mtd: fsmc.h: including linux/io.h for definition of readlViresh Kumar
Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03mtd: onenand: add option and variable for cache program featureRoman Tereshonkov
A new option is added for cache program feature. A new variable ongoing is introduced for onenand_chip to handle the multi-command cache program operation. Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-30Merge git://git.infradead.org/mtd-2.6Linus Torvalds
* git://git.infradead.org/mtd-2.6: (82 commits) mtd: fix build error in m25p80.c mtd: Remove redundant mutex from mtd_blkdevs.c MTD: Fix wrong check register_blkdev return value Revert "mtd: cleanup Kconfig dependencies" mtd: cfi_cmdset_0002: make sector erase command variable mtd: cfi_cmdset_0002: add CFI detection for SST 38VF640x chips mtd: cfi_util: add support for switching SST 39VF640xB chips into QRY mode mtd: cfi_cmdset_0001: use defined value of P_ID_INTEL_PERFORMANCE instead of hardcoded one block2mtd: dubious assignment P4080/mtd: Fix the freescale lbc issue with 36bit mode P4080/eLBC: Make Freescale elbc interrupt common to elbc devices mtd: phram: use KBUILD_MODNAME mtd: OneNAND: S5PC110: Fix double call suspend & resume function mtd: nand: fix MTD_MODE_RAW writes jffs2: use kmemdup mtd: sm_ftl: cosmetic, use bool when possible mtd: r852: remove useless pci powerup/down from suspend/resume routines mtd: blktrans: fix a race vs kthread_stop mtd: blktrans: kill BKL mtd: allow to unload the mtdtrans module if its block devices aren't open ... Fix up trivial whitespace-introduced conflict in drivers/mtd/mtdchar.c
2010-10-29convert get_sb_mtd() users to ->mount()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-10-26mtd: cfi_cmdset_0002: make sector erase command variableGuillaume LECERF
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 <glecerf@gmail.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25mtd: remove junk tabs in nand.hSebastian Andrzej Siewior
Remove tabs between type and name. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25mtd: cleanup nand.hSebastian Andrzej Siewior
- *var instead of * var - proper multiline comment - func(args) instead of func (args) - 80 lines So from |total: 2 errors, 37 warnings, 654 lines checked we got to one warning. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25mtd: nand: introduce NAND_CREATE_EMPTY_BBTSebastian Andrzej Siewior
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 <bigeasy@linutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25mtd: nand: add support for BBT without OOBSebastian Andrzej Siewior
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 <bigeasy@linutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25mtd: add init_size hook for NAND driverHuang Shijie
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 <shijie8@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25mtd: prepare partition add and del functions for ioctl requestsRoman Tereshonkov
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 <roman.tereshonkov@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25mtd: generic FSMC NAND MTD driverLinus Walleij
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 <vipin.kumar@st.com> Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com> Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24mtd: nand: add support for reading ONFI parameters from NAND deviceFlorian Fainelli
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 <norris@broadcom.com> Signed-off-by: Matthieu Castet <matthieu.castet@parrot.com> Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: Florian Fainelli <ffainelli@freebox.fr> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24mtd: nand: add NAND_CMD_PARAM (0xec) definitionFlorian Fainelli
This command is used to read the device ONFI parameters page. Signed-off-by: Florian Fainelli <ffainelli@freebox.fr> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24mtd: nand: Increase NAND_MAX_OOBSIZEBrian Norris
An increase in NAND_MAX_OOBSIZE and NAND_MAX_PAGESIZE is necessary in order to support many new chips. Among those: Toshiba TC58TxG4S2FBAxx 8KB page, 576B OOB Micron MT29F64G08CBAAA 8KB page, 448B OOB Signed-off-by: Brian Norris <norris@broadcom.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24mtd: edit comments on deprecation of ioctl ECCGETLAYOUTBrian Norris
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 <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24mtd: nand: expand nand_ecc_layout, deprecate ioctl ECCGETLAYOUTBrian Norris
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 <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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