Commit graph

277090 commits

Author SHA1 Message Date
Artem Bityutskiy
7086c19d07 mtd: introduce mtd_block_isbad interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:47 +00:00
Artem Bityutskiy
ead995f8d4 mtd: introduce mtd_resume interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:46 +00:00
Artem Bityutskiy
3fe4bae884 mtd: introduce mtd_suspend interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:45 +00:00
Artem Bityutskiy
e95e978645 mtd: introduce mtd_is_locked interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:42 +00:00
Artem Bityutskiy
b66005cd3e mtd: introduce mtd_unlock interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:40 +00:00
Artem Bityutskiy
7799f9ac8d mtd: introduce mtd_lock interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:39 +00:00
Artem Bityutskiy
85f2f2a809 mtd: introduce mtd_sync interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:35 +00:00
Artem Bityutskiy
b0a31f7b2a mtd: introduce mtd_writev interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:34 +00:00
Artem Bityutskiy
4403dbfb45 mtd: introduce mtd_lock_user_prot_reg interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:33 +00:00
Artem Bityutskiy
482b43adbb mtd: introduce mtd_write_user_prot_reg interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:31 +00:00
Artem Bityutskiy
4ea1cabb92 mtd: introduce mtd_read_user_prot_reg interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:30 +00:00
Artem Bityutskiy
855e5d8cfe mtd: introduce mtd_get_user_prot_info interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:29 +00:00
Artem Bityutskiy
d264f72ae5 mtd: introduce mtd_read_fact_prot_reg interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:27 +00:00
Artem Bityutskiy
a750b5ce5e mtd: introduce mtd_get_fact_prot_info interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:25 +00:00
Artem Bityutskiy
a2cc5ba075 mtd: introduce mtd_write_oob interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:24 +00:00
Artem Bityutskiy
fd2819bbc9 mtd: introduce mtd_read_oob interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:23 +00:00
Artem Bityutskiy
7ae79d7ff1 mtd: introduce mtd_panic_write interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:22 +00:00
Artem Bityutskiy
eda95cbf75 mtd: introduce mtd_write interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:20 +00:00
Artem Bityutskiy
329ad399a9 mtd: introduce mtd_read interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:19 +00:00
Artem Bityutskiy
04c601bfa4 mtd: introduce mtd_get_unmapped_area interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:18 +00:00
Artem Bityutskiy
7219778ad9 mtd: introduce mtd_unpoint interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:17 +00:00
Artem Bityutskiy
d35ea200c0 mtd: introduce mtd_point interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:15 +00:00
Artem Bityutskiy
7e1f0dc055 mtd: introduce mtd_erase interface
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 <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:11 +00:00
Artem Bityutskiy
969e57adc2 mtd: mtdchar: rename functions
We are going to re-work the MTD interface and change 'mtd->write()' to
'mtd_write()', 'mtd->read()' to 'mtd_read()' and so forth for all functions
in the 'struct mtd_info' structure.

However, mtdchar.c has its own 'mtd_read()', 'mtd_write()', etc functions
which collide with our changes. This patch renames these functions
to 'mtdchar_read()', 'mtdchar_write()', etc.

Additionally, to make the 'mtdchar.c' file look consistent, rename
similarly all the other functions starting with 'mtd_'.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:25:02 +00:00
Artem Bityutskiy
48d3610268 logfs: rename functions starting with mtd_
We are going to re-work the MTD interface and change 'mtd->write()' to
'mtd_write()', 'mtd->read()' to 'mtd_read()' and so forth for all functions
in the 'struct mtd_info' structure.

However, logfs has its own 'mtd_read()', 'mtd_write()', etc functions
which collide with our changes. This patch renames these logfs functions
to 'logfs_mtd_read()', 'logfs_mtd_write()', etc.

Additionally, to make the 'fs/logfs/dev_mtd.c' file look consistent, rename
similarly all the other functions starting with 'mtd_'.

Cc: Jörn Engel <joern@logfs.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:24:54 +00:00
Artem Bityutskiy
cdfe5ed0f2 mtd: lpddr: drop unnecessary zeroing
We allocate the "mtd" structure using kzalloc which means we do not have
to initialize unused MTD function pointers to NULL, since it is safe to
assume in Linux that NULL contains all zeroes.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:24:48 +00:00
Artem Bityutskiy
4a42243886 mtd: map.h: fix arm cross-build failure
This patch fixes the following build failure:
In file included from include/linux/mtd/qinfo.h:4:0,
                 from include/linux/mtd/pfow.h:7,
                 from drivers/mtd/lpddr/lpddr_cmds.c:27:
include/linux/mtd/map.h: In function 'inline_map_read':
include/linux/mtd/map.h:409:3: error: implicit declaration of function 'BUILD_BUG_ON' [-Werror=implicit-function-declaration]

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:24:34 +00:00
Julia Lawall
bca7f5f713 mtd: txx9ndfmc: use devm_request_and_ioremap
Reimplement a call to devm_request_mem_region followed by a call to ioremap
or ioremap_nocache by a call to devm_request_and_ioremap.

The semantic patch that makes this transformation is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@nm@
expression myname;
identifier i;
@@

struct platform_driver i = { .driver = { .name = myname } };

@@
expression dev,res,size;
expression nm.myname;
@@

-if (!devm_request_mem_region(dev, res->start, size,
-                              \(res->name\|dev_name(dev)\|myname\))) {
-   ...
-   return ...;
-}
... when != res->start
(
-devm_ioremap(dev,res->start,size)
+devm_request_and_ioremap(dev,res)
|
-devm_ioremap_nocache(dev,res->start,size)
+devm_request_and_ioremap(dev,res)
)
... when any
    when != res->start
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:24:11 +00:00
Julia Lawall
af32b36095 mtd: lantiq-flash: drop iounmap for devm_ allocated data
Data allocated with devm_ioremap or devm_ioremap_nocache should not be
freed using iounmap, because doing so causes a dangling pointer, and a
subsequent double free.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
expression x;
@@
(
 x = devm_ioremap(...)
|
 x = devm_ioremap_nocache(...)
)

@@
expression r.x;
@@
* iounmap(x)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:24:05 +00:00
Jamie Iles
775c322087 mtd: gpio-nand: add device tree bindings
Add device tree bindings so that the gpio-nand driver may be
instantiated from the device tree.  This also allows the partitions
to be specified in the device tree.

v7:	- restore runtime device tree/non device tree detection
v6:	- convert to mtd_device_parse_register()
v5:	- fold dt config helpers into a single gpio_nand_of_get_config()
v4:	- get io sync address from gpio-control-nand,io-sync-reg
	  property rather than a resource
	- clarified a few details in the binding
v3:	- remove redundant cast and a couple of whitespace/naming
	  changes
v2:	- add CONFIG_OF guards for non-dt platforms
	- compatible becomes gpio-control-nand
	- clarify some binding details

Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:23:58 +00:00
Jonas Gorski
f98872fc14 mtd: bcm63xxpart: check the image tag's crc32
Only use the values from the image tag if it is valid. Always create
the CFE, NVRAM and linux partitions, to allow flashing a new image even
if the old is invalid without overwriting CFE or NVRAM.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:23:32 +00:00
Jonas Gorski
8051667838 MIPS: BCM63XX: bcm963xx_tag.h: make crc fields integers
All CRC32 fields are 32 bit integers, so define them as such to prevent
unnecessary casts if we want to use them.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:23:30 +00:00
Jonas Gorski
327c62c554 mtd: bcm63xxpart: don't assume NVRAM is always the fourth partition
Instead of referencing the sizes of fixed partitions, use the
precomputed CFE/NVRAM lengths.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:20:58 +00:00
Jonas Gorski
678eb9bb81 mtd: bcm63xxpart: make sure CFE and NVRAM partitions are at least 64KiB
The CFE boot loader on BCM63XX platforms assumes itself and the NVRAM
partition to be 64 KiB (or erase block sized, if larger).
Ensure this assumption is also met when creating the partitions to
prevent accidential erasure of CFE or NVRAM.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:20:44 +00:00
Jonas Gorski
f2d9739b8e mtd: bcm63xxpart: check version marker string for newer CFEs
Recent CFEs do not contain the CFE1CFE1 magic anymore, so check for the
"cfe-v" version marker string instead. As very old CFEs do not have
this string, leave the CFE1CFE1 magic as a fallback for detection.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:19:00 +00:00
Rusty Russell
f9fbcdc357 mtd: sm_ftl: fix module parameter
You didn't mean this to be a bool.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:18:55 +00:00
Robert Jarzmik
e10019bce9 mtd: docg3: remove unused function
As the MTD api has no use for the number of erase cycles
each block has endured, remove the function which calculated
that value.

If one day MTD api finds it usefull for wear levelling
algorithms to have this information, the function should be
put back in place.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:18:51 +00:00
Shengzhou Liu
f57eb5cc53 mtd: nand: Add ONFI support for FSL NAND controller
- fix NAND_CMD_READID command for ONFI detect.
- add NAND_CMD_PARAM command to read the ONFI parameter page.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:18:47 +00:00
Shengzhou Liu
d8251108e0 mtd: nand: fixup for fmr initialization of Freescale NAND controller
There was a bug for fmr initialization, which lead to  fmr was always 0x100
in fsl_elbc_chip_init() and caused FCM command timeout before calling
fsl_elbc_chip_init_tail(), now we initialize CWTO to maximum timeout value
and not relying on the setting of bootloader.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:18:44 +00:00
Artem Bityutskiy
2b00668ff9 mtd: document that MEMWRITE ioctl is NAND-specific
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:18:36 +00:00
Liu Shuo
9ae84fe8c1 mtd: fsl_elbc_nand: set Nand flash page address to FBAR and FPAR correctly
If we use the Nand flash chip whose number of pages in a block is greater
than 64(for large page), we must treat the low bit of FBAR as being the
high bit of the page address due to the limitation of FCM, it simply uses
the low 6-bits (for large page) of the combined block/page address as the
FPAR component, rather than considering the actual block size.

Signed-off-by: Liu Shuo <b35362@freescale.com>
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Tang Yuantian <b29983@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:18:29 +00:00
Roman Tereshonkov
556f063580 mtdoops: fix the oops_page_used array size
The array of unsigned long pointed by oops_page_used is allocated
by vmalloc which requires the size to be in bytes.

BITS_PER_LONG is equal to 32.
If we want to allocate memory for 32 pages with one bit per page then
32 / BITS_PER_LONG  is equal to 1 byte that is 8 bits.
To fix it we need to multiply the result by sizeof(unsigned long) equal to 4.

Cc: stable@kernel.org
Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:18:11 +00:00
Eric Sandeen
5346671020 jffs2: fix up error handling for insert_inode_locked
after 250df6ed27
(fs: protect inode->i_state with inode->i_lock), insert_inode_locked()
no longer returns the inode with I_NEW set on failure.  However,
the error handler still calls unlock_new_inode() on failure,
which does a WARN_ON if I_NEW is not set, so any failure spews
a lot of warnings.

We can just drop the unlock_new_inode() if insert_inode_locked()
fails here.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:18:03 +00:00
Jonas Gorski
fa3ae714c7 mtd: maps: remove the now unused bcm963xx-flash
bcm963xx-flash does nothing meaningful anymore.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:16:39 +00:00
Jonas Gorski
f4aa7adb8b MIPS: BCM63XX: use the new bcm63xxpart parser
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:16:25 +00:00
Jonas Gorski
529688fed6 mtd: maps: physmap: allow partition parsers for physmap_flash_data
Arch setup code might want to use their own partition parsers, but still
use the generic physmap flash driver.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:16:15 +00:00
Jonas Gorski
70a3c167c4 mtd: maps: bcm963xx-flash: make CFE partition parsing an mtd parser
Recent BCM63XX devices support a variety of flash types (parallel, SPI,
NAND) and share the partition layout. To prevent code duplication make
the CFE partition parsing code a stand alone mtd parser to allow SPI or
NAND flash drivers to use it.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:15:31 +00:00
Jonas Gorski
ca105f4d98 mtd: maps: bcm963xx-flash: clean up printk usage
Replace raw printk's with their pr_XXX equivalent and unify broken up
strings so they become grepable.

Also replace the PFX definition with a pr_fmt().

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:13:44 +00:00
Jonas Gorski
6ae9c1c82a mtd: maps: bcm963xx-flash: remove superfluous semicolons
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:13:39 +00:00
Jonas Gorski
35096cb54b mtd: maps: bcm963xx-flash: fix word order for spare partition
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09 18:13:28 +00:00