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2010-10-30Merge branch 'master' of ↵David Woodhouse
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git Conflicts: drivers/mtd/mtd_blkdevs.c Merge Grant's device-tree bits so that we can apply the subsequent fixes. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-26Revert "mtd: cleanup Kconfig dependencies"David Woodhouse
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 <David.Woodhouse@intel.com>
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>
2010-10-26mtd: cfi_cmdset_0002: add CFI detection for SST 38VF640x chipsGuillaume LECERF
Add support for SST38VF640x chips in CFI mode. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: yidong zhang <zhangyd6@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-26mtd: cfi_util: add support for switching SST 39VF640xB chips into QRY modeGuillaume LECERF
Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-26mtd: cfi_cmdset_0001: use defined value of P_ID_INTEL_PERFORMANCE instead of ↵Guillaume LECERF
hardcoded one Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25mtd: cfi_cmdset_0002: code cleanupsWolfram Sang
- 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 <w.sang@pengutronix.de> Acked-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24mtd: cleanup Kconfig dependenciesH Hartley Sweeten
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 <hsweeten@visionengravers.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-18Update broken web addresses in the kernel.Justin P. Mattock
The patch below updates broken web addresses in the kernel Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Finn Thain <fthain@telegraphics.com.au> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Dimitry Torokhov <dmitry.torokhov@gmail.com> Cc: Mike Frysinger <vapier.adi@gmail.com> Acked-by: Ben Pfaff <blp@cs.stanford.edu> Acked-by: Hans J. Koch <hjk@linutronix.de> Reviewed-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-08-08mtd: Remove obsolete <mtd/compatmac.h> includeDavid Woodhouse
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-06mtd: cfi_cmdset_0002: consider version 1.4 as a valid primary extension versionGuillaume LECERF
The Spansion S29WS-P device family uses CFI version 1.4 [1]. Consider it as a valid version. [1] http://www.spansion.com/Support/Datasheets/s29ws-p_00_a12_e.pdf Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-06mtd: change struct flchip_shared spinlock locking into mutexStefani Seibold
This patch prevent to schedule while atomic by changing the flchip_shared spinlock into a mutex. This should be save since no atomic path will use this lock. It was suggested by Arnd Bergmann and Vasiliy Kulikov. Signed-off-by: Stefani Seibold <stefani@seibold.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-04mtd: cfi_cmdset_0002: fix the check for valid primary extension versionsGuillaume LECERF
Valid primary extension versions are: 1.0, 1.1, 1.2, 1.3 [1][2]. Fix the check in cfi_cmdset_0002 accordingly. [1] http://www.amd.com/us-en/assets/content_type/DownloadableAssets/cfi_r20.pdf, page 19 [2] http://www.amd.com/us-en/assets/content_type/DownloadableAssets/cfi_100_20011201.pdf Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-02mtd: cfi_probe: print manufacturer and id of probed chipGuillaume LECERF
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>
2010-08-02mtd: add an ioctl to query the lock status of a flash sectorRichard Cochran
This patchs adds a way for user space programs to find out whether a flash sector is locked. An optional driver method in the mtd_info struct provides the information. Signed-off-by: Richard Cochran <richard.cochran@omicron.at> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-20mtd: cfi_cmdset_0002: use AMD standard command-set with Winbond flash chipsGuillaume LECERF
Tested with W19L320SBT9C [1]. [1] http://www.datasheetarchive.com/pdf-datasheets/Datasheets-40/DSA-795343.pdf [dwmw2: Fix MODULE_ALIAS and linkage] Signed-off-by: Obinou <obconseil@gmail.com> Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Acked-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-20mtd: cfi_cmdset_0002: Fix MODULE_ALIAS and linkage for new 0701 commandset IDDavid Woodhouse
Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: cfi_cmdset_0002: Fix argument order in bootloc warningDavid Woodhouse
Doh. Pointed out by Guillaume LECERF <glecerf@gmail.com> since I managed to miss it in my test builds. S'what I get for hacking at 2am, I suppose. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: chips: add SST39WF160x NOR-flashesWolfram Sang
Due to a broken CFI, they have to be added to jedec_probe. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: jedec_probe: remove spaces before tabsArtem Bityutskiy
Nothing very important, this just makes git am stop producing warnings. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: chips: use common manufacturer codes in jedec_probe()Wolfram Sang
Factor out old manufacturers and use the generic ones from cfi.h Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: cfi_util: do not printk if no extended query tableGuillaume LECERF
Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: cfi_cmdset_0002: add CFI detection for SST 39VF{32, 64}xxB chipsGuillaume LECERF
This patch adds support for detecting SST 39VF32xxB and 39VF64xxB chips in CFI mode. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: cfi_cmdset_0002: add CFI detection for SST 39VF{16, 32}xx chipsGuillaume LECERF
SST 39VF{16,32}xx chips use the 0x0701 command set, fully compatible with the AMD one. This patch adds support for detecting them in CFI mode. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: cfi_cmdset_0002: Tone down warning messages about TopBottom CFI fieldDavid Woodhouse
Accept values of 2-5 for TopBottom, where the newly-added 4 and 5 values mean a uniform layout. It does indicate WP layout but we don't handle that. Also don't say "broken" when swapping erase regions in a top-boot chip. That got retrospectively documented in the spec. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: cfi_cmdset_0002: do not fail on no extended query table as they are ↵Guillaume LECERF
both optional After looking at AMD's CFI specification [1], both of the extended query tables are optional. Thus, it looks like relying that at least one of those tables exist is a bug in cfi_cmdset_0002. This patch inverts the logic and checks for unlock function pointers before exiting on error. This approach leaves place to add a call to a fixup function to try to handle chips compatible with the early AMD specification from 1995 [2]. [1] http://www.amd.com/us-en/assets/content_type/DownloadableAssets/cfi_r20.pdf [2] http://noel.feld.cvut.cz/hw/amd/20158a.pdf Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: cfi_probe: use P_ID_* definitions instead of hardcoded valuesGuillaume LECERF
Use P_ID_* definitions already in include/linux/mtd/cfi.h instead of the hardcoded values. Make the code more readable. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: cfi_probe: add support for SST 0x0701 vendornameGuillaume LECERF
SST 39VF160x and 39VF320x chips use vendorname id 0x0701 and alternative unlock addresses. Add support for them in cfi_probe.c. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: cfi_probe: make the addresses used to enter Auto Select Mode variableGuillaume LECERF
Make the addresses used to enter Auto Select Mode variable to leave place for handling chips using non-standard addresses. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: cfi_probe: enter Auto Select Mode after filling cfi->cfiq membersGuillaume LECERF
Move the code to enter Auto Select Mode down to be able to use cfi->cfiq members to add support for chips using alternative sequence / unlock addresses. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-10mtd: cfi_cmdset_0002: Add reboot notifier for AMD flashesKevin Cernekee
Ensure that the flash device is in a quiescent state before rebooting. The implementation is closely modeled after the cfi_cmdset_0001 reboot notifier, commit 963a6fb0a0d336d0513083b7e4b5c3ff9d6d2061 . Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-10mtd: fix a huge latency problem in the MTD CFI and LPDDR flash drivers.Stefani Seibold
The use of a memcpy() during a spinlock operation will cause very long thread context switch delays if the flash chip bandwidth is low and the data to be copied large, because a spinlock will disable preemption. For example: A flash with 6,5 MB/s bandwidth will cause under ubifs, which request sometimes 128 KiB (the flash erase size), a preemption delay of 20 milliseconds. High priority threads will not be served during this time, regardless whether this threads access the flash or not. This behavior breaks real time. The patch changes all the use of spin_lock operations for xxxx->mutex into mutex operations, which is exact what the name says and means. I have checked the code of the drivers and there is no use of atomic pathes like interrupt or timers. The mtdoops facility will also not be used by this drivers. So it is dave to replace the spin_lock against mutex. There is no performance regression since the mutex is normally not acquired. Changelog: 06.03.2010 First release 26.03.2010 Fix mutex[1] issue and tested it for compile failure Signed-off-by: Stefani Seibold <stefani@seibold.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-03-26Merge branch 'master' of ↵David Woodhouse
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/mtd/nand/sh_flctl.c Maxim's patch to initialise sysfs attributes depends on the patch which actually adds sysfs_attr_init().
2010-02-26mtd: move more manufacturers to the common cfi.h header fileGuillaume LECERF
Move MANUFACTURER_MACRONIX and MANUFACTURER_SST definitions to the include/linux/mtd/cfi.h header file and rename them to CFI_MFR_MACRONIX and CFI_MFR_SST. All references in drivers/mtd/chips/cfi_cmdset_0002.c are updated to reflect this. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: cfi: remove unneeded NULL checksJiri Slaby
In cfi_intelext_setup and cfi_amdstd_setup, mtd is never NULL. Remove unnecessary checks. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-09tree-wide: Assorted spelling fixesDaniel Mack
In particular, several occurances of funny versions of 'success', 'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address', 'beginning', 'desirable', 'separate' and 'necessary' are fixed. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Joe Perches <joe@perches.com> Cc: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-02-04tree wide: remove execute flag from .c filesSebastian Andrzej Siewior
Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-12-16Merge git://git.infradead.org/mtd-2.6Linus Torvalds
* git://git.infradead.org/mtd-2.6: (90 commits) jffs2: Fix long-standing bug with symlink garbage collection. mtd: OneNAND: Fix test of unsigned in onenand_otp_walk() mtd: cfi_cmdset_0002, fix lock imbalance Revert "mtd: move mxcnd_remove to .exit.text" mtd: m25p80: add support for Macronix MX25L4005A kmsg_dump: fix build for CONFIG_PRINTK=n mtd: nandsim: add support for 4KiB pages mtd: mtdoops: refactor as a kmsg_dumper mtd: mtdoops: make record size configurable mtd: mtdoops: limit the maximum mtd partition size mtd: mtdoops: keep track of used/unused pages in an array mtd: mtdoops: several minor cleanups core: Add kernel message dumper to call on oopses and panics mtd: add ARM pismo support mtd: pxa3xx_nand: Fix PIO data transfer mtd: nand: fix multi-chip suspend problem mtd: add support for switching old SST chips into QRY mode mtd: fix M29W800D dev_id and uaddr mtd: don't use PF_MEMALLOC mtd: Add bad block table overrides to Davinci NAND driver ... Fixed up conflicts (mostly trivial) in drivers/mtd/devices/m25p80.c drivers/mtd/maps/pcmciamtd.c drivers/mtd/nand/pxa3xx_nand.c kernel/printk.c
2009-12-10mtd: cfi_cmdset_0002, fix lock imbalanceJiri Slaby
Stanse found a double unlock in get_chip. get_chip is called with chip->mutex held and caller is responsible for unlocking it too. Do not unlock the lock in get_chip on a fail path. This would mean a double unlock. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-11-30mtd: add support for switching old SST chips into QRY modeGuillaume LECERF
SST 39VF160x/39VF320x and some old SST chips need a special command sequence to enter CFI QueRY mode [1]. This patch adds the relevant sequence to cfi_qry_mode_on(). Tested with 39VF3201. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-11-30mtd: fix M29W800D dev_id and uaddrLadislav Michl
This one sits in my tree for more than two years... Using device code found on page 12 (http://www.btdesigner.com/pdfs/M29W800D.pdf) and unlock address from page 15 MTD subsytem happily detects ST M29W800DB in 16-bit mode. I do believe original author used only 8-bit mode and thus didn't hit this bug. Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-11-30mtd: CFI cmdset_0002: enable erase-suspend-programJoakim Tjernlund
Erase-suspend for writing is required to avoid blocking applications that wish to write some data (to a NOR block other than the one being erased). Particularly, it solves some huge delays that an application (which writes to a UBIFS) will experience if UBI attaches to empty NOR flash. In this case the UBI background thread will erase a lot of blocks and the application can be blocked for minutes because of the "MTD/CFI chip lock". This feature has been disabled for years. Maybe this was because the old code turned it on for erase-suspend read-only chips also (cfip->EraseSuspend & 0x1). This is wrong and corrected now. This patch was tweaked by Norbert van Bolhuis. Signed-off-by: Norbert van Bolhuis <nvbolhuis@aimvalley.nl> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-11-30mtd: move manufacturer to the common cfi.h header fileHans-Christian Egtvedt
This patch moves the MANUFACTURER_ST and MANUFACTURER_INTEL to the include/linux/mtd/cfi.h header file and renames them to CFI_MFR_ST and CFI_MFR_INTEL. CFI_MFR_ST was already present there. All references in drivers/mtd/chips/cfi_cmdset_0001.c are updated to reflect this. Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Acked-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-11-30mtd: add lock fixup for AT49BV640D and AT49BV640DT chipsHans-Christian Egtvedt
This patch sets the MTD_POWERUP_LOCK flag for AT49BV640D and AT49BV640DT devices, since the devices are locked when powered up and needs to be unlocked before interfaced. Quote datasheet; "At power-up and reset, all sectors have their Softlock protection mode enabled.". Tested on AVR32 hardware platform with an AT49BV640D flash device. Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Acked-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-11-30mtd: add missing put_chip() in cfi_intelext_reset()Nicolas Pitre
Signed-off-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-11-09Kconfig: Remove useless and sometimes wrong commentsMichael Roth
Additionally, some excessive newlines removed. Signed-off-by: Michael Roth <mroth@nessie.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-09-23mtd: jedec_probe: add PSD4256G6V idMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-20Merge branch 'master' of ↵David Woodhouse
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/mtd/mtdcore.c Merged in order that I can apply the Nomadik nand/onenand support patches.
2009-09-19mtd: cfi_cmdset_0002: add 0xFF intolerance for M29W128GMassimo Cirillo
The M29W128G Numonyx flash devices are intolerant to any 0xFF command: in the Cfi_util.c the function cfi_qry_mode_off() (that resets the device after the autoselect mode) must have a 0xF0 command after the 0xFF command. This fix solves also the cause of the fixup_M29W128G_write_buffer() fix, that can be removed now. The following patch applies to 2.6.30 kernel. Signed-off-by: Massimo Cirillo <maxcir@gmail.com> Acked-by: Alexey Korolev <akorolev@infradead.org> Cc: stable@kernel.org Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-09-19mtd: jedec: fix compilation problem with I28F640C3B definitionStefan Roese
Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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