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* [MTD] [NOR] Fix oops in cfi_amdstd_syncVijay Sampath2007-03-08
| | | | | | | | | | | | | The files cfi_cmdset_0002.c and cfi_cmdset_0020.c do not initialize their wait queues like is done in cfi_cmdset_0001.c. This causes an oops when the wait queue is accessed. I have copied the code from cfi_cmdset_0001.c that is pertinent to initialization of the wait queue. Signed-off-by: Vijay Sampath <vsampath@gmail.com> Acked-by: Joern Engel <joern@lazybastard.org> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* Merge git://git.infradead.org/mtd-2.6Linus Torvalds2007-02-19
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: (49 commits) [MTD] [NAND] S3C2412 fix hw ecc [MTD] [NAND] Work around false compiler warning in CAFÉ driver [JFFS2] printk warning fixes [MTD] [MAPS] ichxrom warning fix [MTD] [MAPS] amd76xrom warning fix [MTD] [MAPS] esb2rom warning fixes [MTD] [MAPS] ck804xrom warning fix [MTD] [MAPS] netsc520 warning fix [MTD] [MAPS] sc520cdp warning fix [MTD] [ONENAND] onenand_base warning fix [MTD] [NAND] eXcite nand flash driver [MTD] Improve heuristic for detecting wrong-endian RedBoot partition table [MTD] Fix RedBoot partition parsing regression harder. [MTD] [NAND] S3C2410: Hardware ECC correction code [JFFS2] Use MTD_OOB_AUTO to automatically place cleanmarker on NAND [MTD] Clarify OOB-operation interface comments [MTD] remove unused ecctype,eccsize fields from struct mtd_info [MTD] [NOR] Intel: remove ugly PROGREGION macros [MTD] [NOR] STAA: use writesize instead off eccsize to represent ECC block [MTD] OneNAND: Invalidate bufferRAM after erase ...
| * [MTD] [NOR] Intel: remove ugly PROGREGION macrosArtem Bityutskiy2007-02-09
| | | | | | | | | | | | | | | | | | | | | | | | Remove ugly and weird MTD_PROGREGION_CTRLMODE_VALID() and MTD_PROGREGION_CTRLMODE_INVALID() macros. There is only one user of them and they are used locally just for printing. Anyway, this patch is a preparation for removing mtd->ecctype and mtd->eccsize, but these macros use them. Fix this. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [MTD] [NOR] STAA: use writesize instead off eccsize to represent ECC blockArtem Bityutskiy2007-02-09
| | | | | | | | | | | | | | | | | | The cfi_staa_write_buffers() uses mtd->eccsize but means mtd->writesize. BTW, mtd-eccsize is broken and is not initialized, which means the code fixed by this patch is broken/unused anyway. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [MTD] Fix default timeouts for Intel NOR flashDavid Woodhouse2007-02-09
| | | | | | | | | | | | | | | | | | | | In commit c172471b78255a5cf6d05383d9ebbf0c6683167a Nico switched to using common code for polling for command completion. Unfortunately he also used a common default timeout for both write and erase commands, despite the fact that erases can take a _whole_ lot longer. Use a more sensible default for erase timeout. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | [PATCH] remove many unneeded #includes of sched.hTim Schmielau2007-02-14
|/ | | | | | | | | | | | | | | | | | | | | | | | After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'master' of ↵David Woodhouse2006-12-01
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
| * [PATCH] Fix Intel/Sharp command set erase suspend bugJoakim Tjernlund2006-11-28
| | | | | | | | | | | | | | | | | | | | When we sleep and wait for a suspended operation to be resumed, go back and check until it's ready -- don't just continue after the first time we're woken. This can cause file system corruption. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [MTD] Remove trailing whitespaceDavid Woodhouse2006-11-30
| | | | | | | | | | | | | | The newly-added cafe_ecc.c had a lot of it because of the way the lookup table was auto-generated; clean up the other files too while we're at it. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | [MTD] replace kmalloc+memset with kzallocBurman Yan2006-11-28
| | | | | | | | | | Signed-off-by: Yan Burman <yan_952@hotmail.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | [MTD] NOR: leave Intel chips in read-array mode on suspendDavid Anders2006-10-21
| | | | | | | | | | | | | | | | | | | | | | | | | | During some testing with several samsung s3c24xx based devices it was discovered that often the cfi_cmdset_0001.c would not leave the chip in read-array mode on suspend. this is an issue if the same flash chip is used for the bootloader that needs to be read on resume. Signed-off-by: David Anders <danders@amltd.com> Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | [MTD] JEDEC probe: fix comment typo (devic)Alexey Dobriyan2006-10-21
| | | | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | [MTD] CHIPS: Support for SST 49LF040B flash chipRyan Jackson2006-10-21
|/ | | | | | | | Add chip driver and JEDEC probe support for the SST 49LF040B flash chip. Signed-off-by: Ryan Jackson <rjackson@lnxi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* Fix several typos in drivers/Matt LaPlante2006-10-03
| | | | Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [MTD] Unlock NOR flash automatically where necessaryHåvard Skinnemoen2006-09-22
| | | | | | | | | | | | | | | | | Introduce the MTD_STUPID_LOCK flag which indicates that the flash chip is always locked after power-up, so all sectors need to be unlocked before it is usable. If this flag is set, and the chip provides an unlock() operation, mtd_add_device will unlock the whole MTD device if it's writeable. This means that non-writeable partitions will stay locked. Set MTD_STUPID_LOCK in fixup_use_atmel_lock() so that these chips will work as expected. Signed-off-by: Håvard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* MTD: Fix bug in fixup_convert_atmel_priHåvard Skinnemoen2006-09-16
| | | | | | | | | | | The memset() in fixup_convert_atmel_pri is supposed to zero out everything except the first 5 bytes in *extp, but it ends up zeroing out something way outside the struct instead. Fix this potentially dangerous code by casting the pointer to char * before doing arithmetic. Signed-off-by: Håvard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* MTD: Add lock/unlock operations for Atmel AT49BV6416Haavard Skinnemoen2006-08-16
| | | | | | | | | | | | | | The AT49BV6416 is locked by default, so we really need to provide at least the unlock() operation for write and erase to work. This patch implements both ->lock() and ->unlock() and provides a fixup to install them when an AT49BV6416 chip is detected. These functions are probably valid on more Atmel chips, but I believe it's mostly obsolete ones. The AT49BV6416 is in fact obsolete, but it's used on all current AT32STK1000 development boards. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Josh Boyer <jwboyer@gmail.com>
* MTD: Convert Atmel PRI information to AMD formatHaavard Skinnemoen2006-08-16
| | | | | | | | | | | | Atmel flash chips don't have PRI information in the same format as AMD flash chips. This patch installs a fixup for all Atmel chips that converts the relevant PRI fields into AMD format. Only the fields that are actually used by the command set is actually converted. The rest are initialized to zero (which should be safe) Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Josh Boyer <jwboyer@gmail.com>
* [PATCH] MTD: Add Macronix MX29F040 to JEDECTakashi YOSHI2006-08-14
| | | | | Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp> Signed-off-by: Josh Boyer <jwboyer@gmail.com>
* [MTD] Fixes of performance and stability issues in CFI driver.Alexey Korolev2006-07-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix of performance and stability issues on Intel NOR chips. It fixes: 1. Very low write performance on Sibley (perf tests demonstrated write performance less than 100Kb/sec when it should be over 400Kb/sec). 2. Low erase performance. (perf tests on Sibleuy demonstrated erase performance 246Kb/sec when it should be over 300Kb/sec). 3. Error on JFFS2 tests with CPU loading application when MTD returns "block erase error: (status timeout)" To fix the issue it does the following: 1. Removes the timeout tuning from inval_cache_and_wait_for_operation. 2. Waiting conditions in inval_cache_and_wait_for_operation now is based on timer resolution If timeout is lower than timer resolution then we do in cycle "Checking the status" udelay(1); cond_resched(); If timeout is greater than timer resolution (probably erase operation) We do the following sleep for half of operation timeout and do in cycle the following "Checking the status" sleep for timer resolution Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Alexey Korolev <akorolev@infradead.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-30
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [MTD] Initialize 'writesize'Artem B. Bityutskiy2006-06-22
| | | | Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
* [MTD] Restore MTD_ROM and MTD_RAM typesDavid Woodhouse2006-06-14
| | | | | | | Let's not attempt the abolition of mtd->type until/unless it's properly thought through. And certainly, let's not do it by halves. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [MTD] assume mtd->writesize is 1 for NOR flashesArtem B. Bityutskiy2006-06-14
| | | | Signed-off-by: Artem B. Bityitskiy
* [MTD] replace MTD_RAM with MTD_GENERIC_TYPEJoern Engel2006-05-30
| | | | | | | | Ram devices get the extra capability of MTD_NO_ERASE - not requiring an explicit erase before writing to it. Currently only mtdblock uses this capability. Rest of the patch is a simple text replacement. Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
* [MTD] replace MTD_ROM with MTD_GENERIC_TYPEJoern Engel2006-05-30
| | | | | | | | No mtd user should ever check for the device type. Instead, device features should be checked by the flags - if at all. As a first step towards type removal, change MTD_ROM into MTD_GENERIC_TYPE. Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
* [MTD] Introduce MTD_BIT_WRITEABLEJoern Engel2006-05-22
| | | | | | | | | | | | | o Add a flag MTD_BIT_WRITEABLE for devices that allow single bits to be cleared. o Replace MTD_PROGRAM_REGIONS with a cleared MTD_BIT_WRITEABLE flag for STMicro and Intel Sibley flashes with internal ECC. Those flashes disallow clearing of single bits, unlike regular NOR flashes, so the new flag models their behaviour better. o Remove MTD_ECC. After the STMicro/Sibley merge, this flag is only set and never checked. Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
* [MTD] Merge STMicro NOR_ECC code with Intel Sibley codeJoern Engel2006-05-22
| | | | | | | | | In 2002, STMicro started producing NOR flashes with internal ECC protection for small blocks (8 or 16 bytes). Support for those flashes was added by me. In 2005, Intel Sibley flashes copied this strategy and Nico added support for those. Merge the code for both. Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
* [MTD] Introduce writesizeJoern Engel2006-05-22
| | | | | | | | At least two flashes exists that have the concept of a minimum write unit, similar to NAND pages, but no other NAND characteristics. Therefore, rename the minimum write unit to "writesize" for all flashes, including NAND. Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
* [MTD] Account for MODULE_SYMBOL_PREFIX when requesting NOR chip driverDavid Woodhouse2006-05-21
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [MTD] Use __symbol_get() instead of symbol_get() in NOR chip probeDavid Woodhouse2006-05-19
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [MTD] Fix printk format error in gen_probe.cDavid Woodhouse2006-05-17
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* cfi_cmdset_0001: factorize code to wait for flash statusNicolas Pitre2006-05-16
| | | | | | | | | | | | | This allows for much better abstraction and separation of the XIP and non-XIP cases with their own specific implementations. This fixes the case where a timeout was tripped on in the XIP case by the code that was meant for the non-XIP case only. This also makes for a nice code reduction. Signed-off-by: Nicolas Pitre <nico@cam.org> CC: "Alexey, Korolev" <alexey.korolev@intel.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* cfi-cmdset-0001: always update the chip statusNicolas Pitre2006-05-16
| | | | | | | ... otherwise xip_enable() won't do the right thing. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* CHIPS: Fix potential starvation in cfi_cmdset_0001Josh Boyer2006-05-16
| | | | | | | | | | | The patch below fixes a potential starvation issue that can arise when there is contention on a chip during a period when a process is currently writing to it. The starvation is avoided by conditionally rescheduling when the chip is left in a state usable by other processes. Signed-off-by: Josh Boyer <jdub@us.ibm.com> Signed-off-by: Tom Gall <tom_gall@vnet.ibm.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [MTD] Fix legacy character sets throughout drivers/mtd, include/linux/mtdDavid Woodhouse2006-05-13
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [MTD] Deal correctly with NOR chips which are smaller than the map windowDavid Woodhouse2006-05-13
| | | | | | | | | | | | We used to calculate the number of chips to be zero, allocate an array of that size, then nasty things would happen when we attempt to access the first object in that zero-sized array. Now, if the number of _full_ chips that would fit into the map is zero, we allocate an array of one anyway, and then artificially reduce the total size of the resulting MTD device to fit in the map. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* Export cfi_cmdset_0020 and cfi_cmdset_0002 with EXPORT_SYMBOL_GPLDavid Woodhouse2006-05-08
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* Remove use of inter_module_crap in NOR flash chip drivers.David Woodhouse2006-05-08
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* Remove unchecked MTD flagsJörn Engel2006-04-17
| | | | | | | Several flags are set by some devices, but never checked. Remove them. Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* MTD: remove obsolete Kconfig optionsAnders Larsen2006-03-31
| | | | | | | | | | | | Remove the obsolete Kconfig options MTD_CFI_AMDSTD_RETRY and MTD_CFI_AMDSTD_RETRY_MAX The code that depended on these was removed in early 2004, but Kconfig was not updated accordingly. Signed-off-by: Anders Larsen <al@alarsen.net> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PATCH] Add chip used in collie to jedec_probePavel Machek2006-03-31
| | | | | | | | | | | | | This adds flash chip used in Sharp Zaurus sl5500 (collie) to jedec_probe. Values work for read-only access, but I have not figured out how to do read-write. Signed-off-by: Pavel Machek <pavel@suse.cz> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] drivers/mtd: Use ARRAY_SIZE macroTobias Klauser2006-03-31
| | | | | | | | | | | Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) and remove duplicates of the macro. Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] drivers/mtd/: small cleanupsAdrian Bunk2006-03-31
| | | | | | | | | | | - chips/sharp.c: make two needlessly global functions static - move some declarations to a header file where they belong to Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Kconfig help: MTD_JEDECPROBE already supports IntelAdrian Bunk2006-03-26
| | | | | | | Intel chips are already supported. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: David Woodhouse <dwmw2@infradead.org>
* [PATCH] cfi: init wait queue in chip structSimon Vogl2006-02-24
| | | | | | | | | | | Fix a kernel oops for Intel P30 flashes, where the wait queue head was not initialized for the flchip struct, which in turn caused a crash at the first read operation. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cfi_cmdset_0001: fix range for cache invalidationAlexey Korolev2006-02-20
| | | | | | | | | | | | | | | I found an issue in cfi_cmdset0001.c. It is related to cache region invalidation in the buffered write procedure. The code performs cache invalidation from "cmd_addr" to "cmd_adr + len" in do_write_buffer() while we modify region from "adr" to "adr+len". This issue affects writes + reads of data by small chunks. Signed-off-by: Nicolas Pitre <nico@cam.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] arm: fix dependencies for MTD_XIPAl Viro2006-02-08
| | | | | | | | | MTD_XIP depends on having working asm/mtd-xip.h; it's not just per-architecture (arm-only, as current Kconfig would have it), but actually per-subarch as well. Introduced a new symbol (ARCH_MTD_XIP) set by arch Kconfig; MTD_XIP depends on it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] build kernel/intermodule.c only when requiredAdrian Bunk2006-01-17
| | | | | | | | | | Build kernel/intermodule.c only when required. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] no longer mark MTD_OBSOLETE_CHIPS as BROKENAdrian Bunk2006-01-17
| | | | | | | | | | This patch removes the wrong dependency of MTD_OBSOLETE_CHIPS on BROKEN and marks the non-compiling MTD_AMDSTD and MTD_JEDEC drivers as BROKEN. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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