Signed-off-by: NYan Burman <yan_952@hotmail.com>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Fix printk format warning:
drivers/mtd/maps/physmap.c:93: warning: long long unsigned int format, long unsigned int arg (arg 2)
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

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: NVitaly Wool <vwool@ru.mvista.com>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Currently, mtd_blkdevs enforces a block size of 512, even if the drivers
can seemingly request a different size. This patch fixes mtd_blkdevs so
block sizes other than 512 work correctly.
Signed-off-by: NRichard Purdie <rpurdie@openedhand.com>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Add support for accessing BIOS flash chips connected to the NVIDIA ck804 southbridge.
Signed-off-by: NRyan Jackson <rjackson@lnxi.com>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

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: NStefan Roese <sr@denx.de>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

This patch makes the needlessly global mtdpart_setup() static.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

This patch converts drivers/mtd/nand/rtc_from4.c to use the new
lib/bitrev.c
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

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: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

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: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

They fixed the hardware so that ECC doesn't fail on reading an empty
block.
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Fixes http://dev.laptop.org/ticket/237Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

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: NDavid Woodhouse <dwmw2@infradead.org>

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: NRicard Wanderlöf <ricardw@axis.com>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Conflicts:

	drivers/mtd/nand/Kconfig

Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

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: NDavid Woodhouse <dwmw2@infradead.org>

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: NArtem Bityutskiy <dedekind@infradead.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

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: NDavid Anders <danders@amltd.com>
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NArtem Bityutskiy <dedekind@infradead.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Removes line break after return type in function definitions, to be
consistent with the Linux coding style.
Signed-off-by: NVijay Kumar <vijaykumar@bravegnu.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

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: NVijay Kumar <vijaykumar@bravegnu.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

This patch removes code that does chip mapping. The chip mapping code
is no longer used.
Signed-off-by: NVijay Kumar <vijaykumar@bravegnu.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

This patch has removed ITE 8172G and Globespan IVR MTD support.
These boards support have already been removed.
Signed-off-by: NYoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: NRalf Bächle <ralf@linux-mips.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

1. The ECCGETLAYOUT ioctl copy_to_user() call has a superfluous '&'
causing the resulting information to be garbage rather than the intended
mtd->ecclayout.

2. The MEMGETOOBSEL misses copying mtd->ecclayout->eccbytes so the
resulting field of the returned structure contains garbage.
Signed-off-by: NRicard Wanderlöf <ricardw@axis.com>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

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: NAndrew Victor <andrew@sanpeople.com>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

typo fix: noticed this typo while reading the patch
"jffs2: fix symlink error handling"
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Fairly self explanatory.  Keep a reference initially, drop it when we free up
the driver resources.
Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Use rb_first() and rb_last() to implement frag_first() and frag_last().
Signed-off-by: NAkinbou Mita <akinobu.mita@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Add MTD map driver for BIOS flash chips connected to the Intel ESB2
southbridge.

[akpm@osdl.org: coding-style fixes, build fix]
Signed-off-by: NRyan Jackson <rjackson@lnxi.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>