linux-toradex.git/include/mtd, branch tegra Linux kernel for Apalis and Colibri modules UBI: document UBI_IOCVOLUP better in user header 2013-07-05T15:56:36+00:00 Mike Frysinger vapier@gentoo.org 2013-05-02T03:42:47+00:00 b3743d58728192f99767c272371a1d80f974537a The current ioctl define implies that this func expects to be passed a 64bit number directly rather than a pointer to a 64bit. The code that processes this ioctl shows that it clearly expects a pointer. It'd be best if we could change the type to "__s64*", but that would change the generated ioctl number thus breaking the userland ABI. So just add a comment for intrepid developers. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> 
The current ioctl define implies that this func expects to be passed a
64bit number directly rather than a pointer to a 64bit.  The code that
processes this ioctl shows that it clearly expects a pointer.

It'd be best if we could change the type to "__s64*", but that would
change the generated ioctl number thus breaking the userland ABI.  So
just add a comment for intrepid developers.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
UBI: add max_beb_per1024 to attach ioctl 2012-10-05T11:22:04+00:00 Richard Genoud richard.genoud@gmail.com 2012-08-20T16:00:15+00:00 072f08afcca6644e86cb4124fc9de7539ee1bac7 This patch provides a possibility to set the "maximum expected number of bad blocks per 1024 blocks" (max_beb_per1024) for each mtd device using the UBI_IOCATT ioctl. Signed-off-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> 
This patch provides a possibility to set the "maximum expected number of
bad blocks per 1024 blocks" (max_beb_per1024) for each mtd device using
the UBI_IOCATT ioctl.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
UBI: amend commentaries WRT dtype 2012-05-23T10:04:04+00:00 Artem Bityutskiy artem.bityutskiy@linux.intel.com 2012-05-14T16:49:35+00:00 3f0b81760a5843489ca29bbf2cd1c7999609e75a Richard removed the "dtype" hint, but few commentaries were left and this patch removes them. I've also added a better description about the "dtype" field in the ubi-user.h for people who may ever wonder what was that dtype thing about. This patch also adds an important note that it is better to use value "3" for the "dtype" field. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> 
Richard removed the "dtype" hint, but few commentaries were left and this patch
removes them. I've also added a better description about the "dtype" field in
the ubi-user.h for people who may ever wonder what was that dtype thing about.

This patch also adds an important note that it is better to use value "3" for
the "dtype" field.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
UBI: remove data type hint from ubi-user.h 2012-05-23T10:04:04+00:00 Richard Weinberger richard@nod.at 2012-05-14T15:55:52+00:00 092c66b2a6a098b0e7795ee86a0d86edd53fa9ad This finally removes the data type hint from the UBI ABI. >From now on the "dtype" field will be ignored and must not used anymore. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> 
This finally removes the data type hint from the UBI ABI.
>From now on the "dtype" field will be ignored and must not used
anymore.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
UBI: fix minor stylistic issues 2011-04-14T08:34:41+00:00 Artem Bityutskiy Artem.Bityutskiy@nokia.com 2011-03-28T07:12:25+00:00 feddbb34ebd75e9b6bf573b852079e327a88c07a Fix checkpatch.pl errors and warnings: * space before tab * line over 80 characters * include linux/ioctl.h instead of asm/ioctl.h Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 
Fix checkpatch.pl errors and warnings:

* space before tab
* line over 80 characters
* include linux/ioctl.h instead of asm/ioctl.h

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
UBI: use __packed instead of __attribute__((packed)) 2011-04-14T08:34:41+00:00 Artem Bityutskiy Artem.Bityutskiy@nokia.com 2011-03-28T07:04:09+00:00 3627924acf70a9a26587712e4888ee7144489678 There was an attempt to standartize various "__attribute__" and other macros in order to have potentially portable and more consistent code, see commit 82ddcb040570411fc2d421d96b3e69711c670328. Note, that commit refers Rober Love's blog post, but the URL is broken, the valid URL is: http://blog.rlove.org/2005/10/with-little-help-from-your-compiler.html Moreover, nowadays checkpatch.pl warns about using __attribute__((packed)): "WARNING: __packed is preferred over __attribute__((packed))" It is not a big deal for UBI to use __packed, so let's do it. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 
There was an attempt to standartize various "__attribute__" and
other macros in order to have potentially portable and more
consistent code, see commit 82ddcb040570411fc2d421d96b3e69711c670328.

Note, that commit refers Rober Love's blog post, but the URL
is broken, the valid URL is:
http://blog.rlove.org/2005/10/with-little-help-from-your-compiler.html

Moreover, nowadays checkpatch.pl warns about using
__attribute__((packed)):

"WARNING: __packed is preferred over __attribute__((packed))"

It is not a big deal for UBI to use __packed, so let's do it.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
UBI: cleanup comments around volume properties 2011-04-14T08:34:40+00:00 Artem Bityutskiy Artem.Bityutskiy@nokia.com 2011-03-15T14:37:57+00:00 e8e088de305d7cc00b2c8b2a857ceb62d5fa68d3 Cleanup and improve commentaries around the "set volume properties" ioctl, make a simple indentation fix as well. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 
Cleanup and improve commentaries around the "set volume properties" ioctl,
make a simple indentation fix as well.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
UBI: re-name set volume properties ioctl 2011-04-14T08:34:40+00:00 Artem Bityutskiy Artem.Bityutskiy@nokia.com 2011-03-15T14:25:38+00:00 6748482f4153fc0e095aa3dc831d5edac5656a80 Rename the ioctl which sets volume properties from 'UBI_IOCSETPROP' to 'UBI_IOCSETVOLPROP' to reflect the fact that this ioctl is about volume properties, not device properties. This is also consistent with the other volume ioctl name - 'UBI_IOCVOLUP'. The main motivation for the re-name, however, is that we are going to introduce the per-UBI device "set properties" ioctl, so we need good and logical naming. At the same time, re-name the "set volume properties request" data structure from 'struct ubi_set_prop_req' to 'struct ubi_set_vol_prop_req'. And re-name 'UBI_PROP_DIRECT_WRITE' to 'UBI_VOL_PROP_DIRECT_WRITE'. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 
Rename the ioctl which sets volume properties from 'UBI_IOCSETPROP' to
'UBI_IOCSETVOLPROP' to reflect the fact that this ioctl is about volume
properties, not device properties. This is also consistent with the
other volume ioctl name - 'UBI_IOCVOLUP'.

The main motivation for the re-name, however, is that we are going
to introduce the per-UBI device "set properties" ioctl, so we need
good and logical naming.

At the same time, re-name the "set volume properties request" data
structure from 'struct ubi_set_prop_req' to
'struct ubi_set_vol_prop_req'.

And re-name 'UBI_PROP_DIRECT_WRITE' to 'UBI_VOL_PROP_DIRECT_WRITE'.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
mtd: Define MLC Flash as a different flash type 2010-10-24T23:50:20+00:00 Rohit Hassan Sathyanarayan rohit.hs@samsung.com 2010-09-27T10:32:03+00:00 17a22826bbfeed27b10c0d8274fc19d5fc3951c3 MLC NAND Flash has a different cell structure and differs in functioning than the SLC NAND Flash. Hence we are considering it as a different Flash type. Signed-off-by: Rohit H.S <rohit.hs@samsung.com> Signed-off-by: Raghav Gupta <gupta.raghav@samsung.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 
MLC NAND Flash has a different cell structure and differs in
functioning than the SLC NAND Flash. Hence we are considering it as
a different Flash type.

Signed-off-by: Rohit H.S <rohit.hs@samsung.com>
Signed-off-by: Raghav Gupta <gupta.raghav@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: edit comments on deprecation of ioctl ECCGETLAYOUT 2010-10-24T22:37:27+00:00 Brian Norris computersforpeace@gmail.com 2010-09-20T06:57:12+00:00 0ceacf36e9c41859a6072342d27cf6e60776c523 There were some improvements and additions necessary in the comments explaining of the expansion of nand_ecclayout, the introduction of nand_ecclayout_user, and the deprecation of the ioctl ECCGETLAYOUT. Also, I found a better placement for the macro MTD_MAX_ECCPOS_ENTRIES; next to the definition of MTD_MAX_OOBFREE_ENTRIES in mtd-abi.h. The macro is really only important for the ioctl code (found in drivers/mtd/mtdchar.c) but since there are small edits being made to the user-space header, I figured this is a better location. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 
There were some improvements and additions necessary in the
comments explaining of the expansion of nand_ecclayout, the
introduction of nand_ecclayout_user, and the deprecation of the
ioctl ECCGETLAYOUT.

Also, I found a better placement for the macro MTD_MAX_ECCPOS_ENTRIES;
next to the definition of MTD_MAX_OOBFREE_ENTRIES in mtd-abi.h. The macro
is really only important for the ioctl code (found in drivers/mtd/mtdchar.c)
but since there are small edits being made to the user-space header, I
figured this is a better location.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>