24 Mar, 2017
1 commit
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Signed-off-by: Andrew F. Davis
Signed-off-by: Jiri Kosina
03 Oct, 2016
1 commit
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Currently, all VID headers are allocated and freed using the
ubi_zalloc_vid_hdr() and ubi_free_vid_hdr() function. These functions
make sure to align allocation on ubi->vid_hdr_alsize and adjust the
vid_hdr pointer to match the ubi->vid_hdr_shift requirements.
This works fine, but is a bit convoluted.
Moreover, the future introduction of LEB consolidation (needed to support
MLC/TLC NANDs) will allows a VID buffer to contain more than one VID
header.Hence the creation of a ubi_vid_io_buf struct to attach extra information
to the VID header.We currently only store the actual pointer of the underlying buffer, but
will soon add the number of VID headers contained in the buffer.Signed-off-by: Boris Brezillon
Signed-off-by: Richard Weinberger
30 Jul, 2016
1 commit
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When reading the vid hdr from the device UBI always reads a whole
page. Instead, read only the data we actually need and speed up
attachment of UBI devices by potentially making use of reading
subpages if the NAND driver supports it.Since the VID header may be at offset vid_hdr_shift in the page and
we can only read from the beginning of a page we have to add that
offset to the read size.Signed-off-by: Sascha Hauer
Signed-off-by: Richard Weinberger
17 Dec, 2015
1 commit
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Looks like a typo, using UBI_EC_HDR_SIZE_CRC (note the "EC") to compute
the CRC for the VID header.This shouldn't cause any functional change, as both structures are 64
bytes. Verified with:BUILD_BUG_ON(UBI_VID_HDR_SIZE_CRC != UBI_EC_HDR_SIZE_CRC);
Reported here:
http://lists.infradead.org/pipermail/linux-mtd/2013-September/048570.htmlReported by: Bill Pringlemeir
Signed-off-by: Brian Norris
Signed-off-by: Richard Weinberger
29 Sep, 2015
1 commit
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Make sure that data_size is less than LEB size.
Otherwise a handcrafted UBI image is able to trigger
an out of bounds memory access in ubi_compare_lebs().Cc: stable@vger.kernel.org
Signed-off-by: Richard Weinberger
Reviewed-by: David Gstir
14 Apr, 2015
1 commit
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Emulate random power cuts by switching device to ro after a number of
writes to allow simple power cut testing with nand-sim.Maximum and minimum number of successful writes before power cut and
what kind of writes (EC header, VID header or none) to interrupt
configurable via debugfs.Signed-off-by: David Oberhollenzer
Signed-off-by: Richard Weinberger
28 Jan, 2015
1 commit
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Some cosmetic fixes to the patch "UBI: Extend UBI layer debug/messaging
capabilities".Signed-off-by: Tanya Brokhman
Signed-off-by: Artem Bityutskiy
07 Nov, 2014
1 commit
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If there is more then one UBI device mounted, there is no way to
distinguish between messages from different UBI devices.
Add device number to all ubi layer message types.The R/O block driver messages were replaced by pr_* since
ubi_device structure is not used by it.Amended a bit by Artem.
Signed-off-by: Tanya Brokhman
Signed-off-by: Artem Bityutskiy
10 Jan, 2014
1 commit
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nor_erase_prepare() will be called before erase a NOR flash, it will program '0'
into a block to mark this block. But program data into a erasure interrupted block
can cause program timtout(several minutes at most) error, could impact other
operation on NOR flash. So UBIFS can read this block first to avoid unneeded
program operation.This patch try to put read operation at head of write operation in
nor_erase_prepare(), read out the data.
If the data is already corrupt, then no need to program any data into this block,
just go to erase this block.This patch is validated on Micron NOR flash, part number is：JS28F512M29EWHA
Signed-off-by: Qi Wang
Signed-off-by: Artem Bityutskiy
10 Dec, 2012
1 commit
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With this patch code is a bit more readable and there's no
generated code or functionality impact.
Furthermore, this abstracts implementation details and
will allow to change ubi_debug_info in a less invasive way.Signed-off-by: Ezequiel Garcia
Signed-off-by: Artem Bityutskiy
04 Sep, 2012
2 commits
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UBI currently prints a lot of information when it mounts a volume, which
bothers some people. Make it less chatty - print only important information
by default.Get rid of 'dbg_msg()' macro completely.
Reported-by: Uwe Kleine-König
Signed-off-by: Artem Bityutskiy -
Join all the split printk lines in order to stop checkpatch complaining.
Signed-off-by: Artem Bityutskiy
21 May, 2012
9 commits
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This patch amends commentaries in scan.[ch] to match the new logic. Reminder -
we did the restructuring to prepare the code for adding the fastmap. This patch
also renames a couple of functions - it was too difficult to separate out that
change and I decided that it is not too bad to have it in the same patch with
commentaries changes.Signed-off-by: Artem Bityutskiy
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Signed-off-by: Artem Bityutskiy
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This patch removes the 'dbg_err()' macro and we now use 'ubi_err' instead.
The idea of 'dbg_err()' was to compile out some error message to make the
binary a bit smaller - but I think it was a bad idea.Signed-off-by: Artem Bityutskiy
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We have the "sefl-check" feature in UBI, but for historical reasons many
corresponding functions and commentaries in the code use term "paranoid check"
instead. Let's clean this up and use "self-check" everywhere.This patch renames functions, amends comments and messages. It touches only the
io.c file.Signed-off-by: Artem Bityutskiy
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This patch kills the UBI debugging Kconfig option completely and makes all the
debugging stuff to be always compiled-in. It was pain in the neck to maintain
this useless option because all users I am aware of have debugging enabled
anyway - how else will you diagnose errors otherwise?Signed-off-by: Artem Bityutskiy
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Currently UBI silently retries I/O operation in case of errors. This patch
makes it emit a warning before retrying. This should allow users notice issues
earlier.Signed-off-by: Artem Bityutskiy
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UBI (and UBIFS) are a bit over-engineered WRT debugging. The idea was to
link as few as possible when debugging is disabled, but the downside is
that most people produce bug reports which are difficult to understand.Always dump the VID and EC headers' contents in case of errors when it
is helpful.Signed-off-by: Artem Bityutskiy
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UBI (and UBIFS) are a bit over-engineered WRT debugging. The idea was to
link as few as possible when debugging is disabled, but the downside is
that most people produce bug reports which are difficult to understand.Always dump the flash contents in case of errors, not only when debugging is
enabled.Signed-off-by: Artem Bityutskiy
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UBI (and UBIFS) are a bit over-engineered WRT debugging. The idea was to
link as few as possible when debugging is disabled, but the downside is
that most people produce bug reports which are difficult to understand.This patch weeds out the 'ubi_dbg_dump_stack()' function and turns it
into 'dump_stack()' - it is always useful to have stack dump in case of
an error.Signed-off-by: Artem Bityutskiy
09 Mar, 2012
1 commit
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Now we have only one buffer so let's rename it to just 'peb_buf1'.
Signed-off-by: Artem Bityutskiy
10 Jan, 2012
5 commits
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Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
This patch is part of a patch-set which changes the MTD interface
from 'mtd->func()' form to 'mtd_func()' form. We need this because
we want to add common code to to all drivers in the mtd core level,
which is impossible with the current interface when MTD clients
call driver functions like 'read()' or 'write()' directly.At this point we just introduce a new inline wrapper function, but
later some of them are expected to gain more code. E.g., the input
parameters check should be moved to the wrappers rather than be
duplicated at many drivers.This particular patch introduced the 'mtd_erase()' interface. The
following patches add all the other interfaces one by one.Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse
21 Sep, 2011
1 commit
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Signed-off-by: Brian Norris
Signed-off-by: Artem Bityutskiy
01 Jun, 2011
2 commits
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We'll need the 'struct ubi_device *ubi' pointer in every debugging function (to
access the ->dbg field), so add this pointer to all the functions implementing
UBI debugging test modes like 'ubi_dbg_is_bitflip()' etc.Signed-off-by: Artem Bityutskiy
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This patch introduces debugfs support to UBI. All the UBI stuff is kept in the
"ubi" debugfs directory, which contains per-UBI device "ubi/ubiX"
sub-directories, containing debugging files. This file also creates
"ubi/ubiX/chk_gen" and "ubi/ubiX/chk_io" knobs for switching general and I/O
extra checks on and off. And it removes the 'debug_chks' UBI module parameters.Signed-off-by: Artem Bityutskiy
14 Apr, 2011
2 commits
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When a PEB passes the torture test, UBI prints
"do not mark it a bad", but should print "do not mark it as bad".
This patch corrects the typo.Signed-off-by: Artem Bityutskiy
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Fix checkpatch.pl errors and warnings:
* space before tab
* line over 80 characters
* include linux/ioctl.h instead of asm/ioctl.hSigned-off-by: Artem Bityutskiy
05 Apr, 2011
1 commit
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'do_sync_erase()' has to check whether we are in R/O mode before
erasing the PEB. This patch adds the check and while on it, adds an
assertion which validates the 'pnum' argument, as well as removes
a check which is always true because it has already been done
few lines before.Signed-off-by: Artem Bityutskiy
24 Mar, 2011
1 commit
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This patch fixes a brown-paperbag bug which was introduced by me:
I used incorrect "GFP_KERNEL | GFP_NOFS" allocation flags to make
sure my allocations do not cause write-back. But the correct form
is "GFP_NOFS".Signed-off-by: Artem Bityutskiy
16 Mar, 2011
4 commits
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This patch adds a possibility to dynamically switch UBI self-checks
on and off, instead of toggling them compile-time from the configuration
menu. This is much more flexible, and consistent with UBIFS, and this
also simplifies UBI Kconfig menu and the code.This patch introduces two levels of self-checks - general, which
includes all self-checks which are relatively fast, and I/O, which
includes write-verify checks and erase-verify checks, which are
relatively slow and involve flash I/O.Signed-off-by: Artem Bityutskiy
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This additional little macro is used to print a bit more messages
while scanning the media. However, we have the 'dbg_bld()' macro
for this, so we better us 'dbg_bld()' and kill UBI_IO_DEBUG. This
simplifies the code a tiny bit.Signed-off-by: Artem Bityutskiy
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Instead of using pre-allocated 'ubi->dbg_peb_buf' buffer in
'ubi_dbg_check_all_ff()', dynamically allocate it when needed. The
intend is to get rid of the pre-allocated 'ubi->dbg_peb_buf' buffer
completely. And the need for this arises because we want to change
to dynamic debugging control instead of compile-time control, i.e.,
we are going to kill the CONFIG_MTD_UBI_DEBUG_PARANOID Kconfig
option, which would mean that 'ubi->dbg_peb_buf' is always allocated,
which would be wasteful.Thus, we are getting rid of 'ubi->dbg_peb_buf', and this is a
preparation for that.signed-off-by: Artem Bityutskiy
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Instead of using pre-allocated 'ubi->dbg_peb_buf' buffer in
'ubi_dbg_check_write()', dynamically allocate it when needed. The
intend is to get rid of the pre-allocated 'ubi->dbg_peb_buf' buffer
completely. And the need for this arises because we want to change
to dynamic debugging control instead of compile-time control, i.e.,
we are going to kill the CONFIG_MTD_UBI_DEBUG_PARANOID Kconfig
option, which would mean that 'ubi->dbg_peb_buf' is always allocated,
which would be wasteful.Thus, we are getting rid of 'ubi->dbg_peb_buf', and this is a
preparation for that.Signed-off-by: Artem Bityutskiy
07 Feb, 2011
2 commits
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When the read operation fails, UBI tries to re-read several times in
a hope that one of the subsequent reads may succeed. However, currently
UBI re-reads only if MTD failed to read all data, but does not re-reads
if all the data were read, but with an integrity error (-EBADMSB). This
patch makes UBI to always re-try reading.This should be useful for reading NAND pages with unstable bits -
re-reading may help to get correct data.Signed-off-by: Artem Bityutskiy
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This change affects only the debugging code. Namely, use mtd->read()
function instead of ubi_io_read() to avoid bit-flips injection
(ubi_dbg_is_bitflip()) which we do not want on the debugging path.Signed-off-by: Artem Bityutskiy