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path: root/drivers/mtd/nand
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2006-11-28[MTD] replace kmalloc+memset with kzallocBurman Yan
Signed-off-by: Yan Burman <yan_952@hotmail.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-11-28Merge git://git.infradead.org/~dwmw2/cafe-2.6David Woodhouse
2006-11-28[MTD] [NAND] remove len/ooblen confusion.Vitaly Wool
As was discussed between Ricard Wanderlöf, David Woodhouse, Artem Bityutskiy and me, the current API for reading/writing OOB is confusing. The thing that introduces confusion is the need to specify ops.len together with ops.ooblen for reads/writes that concern only OOB not data area. So, ops.len is overloaded: when ops.datbuf != NULL it serves to specify the length of the data read, and when ops.datbuf == NULL, it serves to specify the full OOB read length. The patch inlined below is the slightly updated version of the previous patch serving the same purpose, but with the new Artem's comments taken into account. Artem, BTW, thanks a lot for your valuable input! Signed-off-by: Vitaly Wool <vwool@ru.mvista.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-11-28[MTD] [NAND] Fix endianess bug in ndfc.cStefan Roese
The writel() call accidentally clears all bits in the NDFC_CCR register (endianess problem). Now __raw_writel() is used instead. Tested on Bamboo with NAND on chip select 0 and chip select 1. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-11-28[MTD] [NAND] rtc_from4.c: use lib/bitrev.cAdrian Bunk
This patch converts drivers/mtd/nand/rtc_from4.c to use the new lib/bitrev.c Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-11-01[MTD] NAND: Fix ECC settings in CAFÉ controller driver.David Woodhouse
We were resetting cafe->ctl2 to zero after an erase (and also during a write, but it was correctly reset after that). This meant that ECC reads after an erase were failing. Doh. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-31[MTD] NAND: Add register debugging spew option to CAFÉ driverDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-31[MTD] NAND: Use register #defines throughout CAFÉ driver, not numbersDavid Woodhouse
Also use cafe_readl() and cafe_writel() abstraction to make code slightly cleaner -- especially if we want to use it in PIO mode. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-28[MTD] NAND: Fix timing calculation in CAFÉ debugging messageDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-27[PATCH] silence 'make xmldocs' warning by adding missing description of ↵Jesper Juhl
'raw' in nand_base.c:1485 Add description of 'raw' in comments for drivers/mtd/nand/nand_base.c::nand_write_page_syndrome() so 'make xmldocs' will not spew a warning at us. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-27[MTD] NAND: Remove empty block ECC workaroundDavid Woodhouse
They fixed the hardware so that ECC doesn't fail on reading an empty block. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-27[MTD] NAND: Add ECC debugging for CAFÉDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-27[MTD] CAFÉ NAND: Add 'slowtiming' parameter, default usedma and checkecc onDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-27[MTD] NAND: Reset Café controller before initialising.David Woodhouse
Fixes http://dev.laptop.org/ticket/237 Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-27[MTD] NAND: Café ECC -- remove spurious BUG_ON() in err_pos()David Woodhouse
Being a value which isn't in the table is a case we explicitly check for in the caller. Don't BUG_ON() because it does actually happen in practice. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-26[MTD] NAND: Fix nand_default_mark_blockbad() when flash-based BBT disabledRicard Wanderlöf
When a flash-based BBT is not used, nand_default_mark_blockbad() is supposed to mark the block bad in the oob. However, it sets the wrong length variable so that no bad block marker is in fact written. This patch attempts to rectify that. (As note, it seems to be that logically, it shouldn't be necessary to set both length variables, as one appears to be for the main buffer, and one for the oob buffer, but this is how it is done in several places, including the code for the mtd character device MEMWRITEOOB and MEMREADOOB ioctls. I'm not sure if this is a temporary solution during some rework of the mtd infrastructure, or whether there is a deeper thought here.) Signed-off-by: Ricard Wanderlöf <ricardw@axis.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-23[MTD] NAND: Disable ECC checking on CAFÉ since it's broken for nowDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-22[MTD] NAND: CAFÉ NAND driver cleanup, fix ECC on reading empty flashDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-22[MTD] NAND: Add hardware ECC correction support to CAFÉ NAND driverDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-22Merge git://git.infradead.org/~dwmw2/cafe-2.6David Woodhouse
Conflicts: drivers/mtd/nand/Kconfig
2006-10-22[MTD] NAND: Correct setting of chip->oob_poi OOB bufferDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-21[MTD] NAND: Combined oob buffer so it's contiguous with dataDavid Woodhouse
Ditch the separate oobrbuf and oobwbuf fields from the chip buffers, and use only a single buffer immediately after the data. This accommodates NAND controllers such as the OLPC CAFÉ chip, which can't do scatter/gather DMA so needs the OOB buffer to be contiguous with the data, for both read and write. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-21Merge branch 'master' of ↵David Woodhouse
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2006-10-21[MTD] NAND: nandsim: support subpage writeArtem Bityutskiy
As flash cannot do 0->1 bit transitions when programming, do not do this in the simulator too. This makes nandsim able to accept subpage writes. Signed-off-by: Artem Bityutskiy <dedekind@infradead.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-21[MTD] core: trivial comments fixArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <dedekind@infradead.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-21[MTD] NAND: nandsim coding style fixVijay Kumar
Removes line break after return type in function definitions, to be consistent with the Linux coding style. Signed-off-by: Vijay Kumar <vijaykumar@bravegnu.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-21[MTD] NAND: nandsim page-wise allocation (2/2)Vijay Kumar
For page wise allocation, an array of flash page pointers is allocated during initialization. The flash pages are themselves allocated when a write occurs to the page. The flash pages are deallocated when they are erased. Signed-off-by: Vijay Kumar <vijaykumar@bravegnu.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-21[MTD] NAND: nandsim page-wise allocation (1/2)Vijay Kumar
This patch removes code that does chip mapping. The chip mapping code is no longer used. Signed-off-by: Vijay Kumar <vijaykumar@bravegnu.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-21[MTD] NAND: AT91 NAND driverAndrew Victor
This version only differs from version posted by Savin Zlobec (20 Jun 2006) in that the AT91RM9200-specific chip-select / bus setup code has been moved from the at91_nand.c driver into the processor-specific file. From: Savin Zlobec <savin@epico.si> Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-20[MTD NAND] OLPC CAFÉ driver updateDavid Woodhouse
- Fix OOB handling, bad block table marker placement - Some cleanups, enable runtime-optional debugging - Allow BBT stuff to be skipped Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-10[PATCH] mtd: remove several bogus casts to void * in iounmap() argumentAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-06[MTD NAND] Initial import of CAFÉ NAND driver.David Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-10-03Fix several typos in drivers/Matt LaPlante
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-02[MTD] Cleanup of 'ioremap balanced with iounmap for drivers/mtd subsystem'Amol Lad
Updated version of patch, in response to comments from Francois Romieu <romieu@fr.zoreil.com> Remove gratuitous casts from iounmap and initialisation of variables. Signed-off-by: Amol Lad <amol@verismonetworks.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-25[MTD NAND] Allow override of page read and write functions.David Woodhouse
- allow high-level nand_write_page() function to be overridden - likewise low-level write_page_raw() and read_page_raw() functions - Clean up the abuse of chip->ecc.{write,read}_page() with MTD_OOB_RAW Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-25[MTD NAND] Allocate chip->buffers separately to allow it to be overriddenDavid Woodhouse
In particular, the board driver might need it to be DMAable. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-25[MTD NAND] Split nand_scan() into two parts; allow board driver to interveneDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-25[MTD NAND] Export nand_wait_ready() for use by board driversDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-22[MTD NAND] Fix in typo ndfc.c causing wrong ECC layoutFrank Haverkamp
Due to this typo, a wrong ECC layout table is chosen. Signed-off-by: Frank Haverkamp <haver@vnet.ibm.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-22ioremap balanced with iounmap for drivers/mtd subsystemAmol Lad
ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Tested (compilation only) with: - allmodconfig - Modifying drivers/mtd/maps/Kconfig and drivers/mtd/nand/Kconfig to make sure that the changed file is compiling without warning Signed-off-by: Amol Lad <amol@verismonetworks.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-22[MTD NAND] Remove old code in au1550nd.cMichal Piotrowski
Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-08-30Merge branch 'master' of ↵David Woodhouse
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2006-08-27[PATCH] MTD NAND: Fix ams-delta after core conversionJonathan McDowell
The recent hwctrl core conversion for MTD NAND devices broke the Amstrad Delta driver. This fixes it up and uses the existing control line defines rather than unclear magic numbers. Signed-off-by: Jonathan McDowell <noodles@earth.li> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27[PATCH] mtd corruption fixRichard Purdie
Read the return value before we release the nand device otherwise the value can become corrupted by another user of chip->ops, ultimately resulting in filesystem corruption. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Cc: David Woodhouse <dwmw2@infradead.org> Acked-by: Josh Boyer <jwboyer@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-15[MTD NAND] Fix lookup error in nand_get_flash_type()David Woodhouse
Spotted by liyu <liyu@ccoss.com.cn> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-07-15MTD: [NAND] Fix the sharpsl driver after breakage from a core conversionRichard Purdie
The CNE bits are inverted on the device and writeb function is missing a NOT operation. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-07-11[MTD] NAND: OOB buffer offset fixupsVitaly Wool
In the case of data-pad-ecc-pad-data... layout the oob start position has to be sizeof(data) in nand_write_oob_syndrom(). In nand_fill_oob() we need to copy to buf + buffer offset instead of buf + write offset. From: Vitaly Wool <vwool@ru.mvista.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2006-07-05[PATCH] [MTD] NAND: fix dead URL in KconfigArtem B. Bityutskiy
Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
2006-07-03Merge git://git.infradead.org/mtd-2.6Linus Torvalds
* git://git.infradead.org/mtd-2.6: [JFFS2][XATTR] Fix memory leak in POSIX-ACL support fs/jffs2/: make 2 functions static [MTD] NAND: Fix broken sharpsl driver [JFFS2][XATTR] Fix xd->refcnt race condition MTD: kernel-doc fixes + additions MTD: fix all kernel-doc warnings [MTD] DOC: Fixup read functions and do a little cleanup
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
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