Core changes:
- Add a sysfs attribute to expose available OOB size
Driver changes:
- Remove HAS_DMA dependency on various drivers
- Use dev_get_drvdata() instead of platform_get_drvdata() in docg3
- Replace msleep by usleep_range() in the dataflash driver
- Avoid VLA usage in nftl layers
- Remove useless .owner assignment in pismo
- Fix various issues in the CFI driver
- Improve TRX partition handling expose a DT compat for this part
parser
- Clarify OFFSET_CONTINUOUS meaning
NAND changes:
Core changes:
- Add Miquel as a NAND maintainer
- Add access mode to the nand_page_io_req struct
- Fix kernel-doc in rawnand.h
- Support bit-wise majority to recover from corrupted ONFI parameter
pages
- Stop checking FAIL bit after a SET_FEATURES, as documented in the
ONFI spec
Raw NAND Driver changes:
- Fix and cleanup the error path of many NAND controller drivers
- GPMI:
* Cleanup/simplification of a few aspects in the driver
* Take ECC setup specified in the DT into account
- sunxi: remove support for GPIO-based R/B polling
- MTK:
* Use of_device_get_match_data() instead of of_match_device()
* Add an entry in MAINTAINERS for this driver
* Fix nand-ecc-step-size and nand-ecc-strength description in the DT
bindings doc
- fsl_ifc: fix ->cmdfunc() to read more than one ONFI parameter page
OneNAND driver changes:
- samsung: use dev_get_drvdata() instead of platform_get_drvdata()
SPI NOR changes:
Core changes:
- Add support for a bunch of SPI NOR chips
- Clear EAR reg when switching to 3-byte addressing mode on Winbond
chips
SPI NOR controller driver changes:
- cadence: Add DMA support for direct mode reads
- hisi: Prefix a few functions with hisi_
- intel:
* Mark the driver as "dangerous" in Kconfig
* Fix atomic sequence handling
* Pass a 40us delay (instead of 0us) to readl_poll_timeout()
- fsl:
* fix a typo in a function name
* add support for IP variants embedded in the ls2080a and ls1080a
SoCs
- stm32: request exclusive control of the reset line
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Merge tag 'mtd/for-4.18' of git://git.infradead.org/linux-mtd
Pull MTD updates from Boris Brezillon:
"Core changes:
- Add a sysfs attribute to expose available OOB size
Driver changes:
- Remove HAS_DMA dependency on various drivers
- Use dev_get_drvdata() instead of platform_get_drvdata() in docg3
- Replace msleep by usleep_range() in the dataflash driver
- Avoid VLA usage in nftl layers
- Remove useless .owner assignment in pismo
- Fix various issues in the CFI driver
- Improve TRX partition handling expose a DT compat for this part
parser
- Clarify OFFSET_CONTINUOUS meaning
NAND core changes:
- Add Miquel as a NAND maintainer
- Add access mode to the nand_page_io_req struct
- Fix kernel-doc in rawnand.h
- Support bit-wise majority to recover from corrupted ONFI parameter
pages
- Stop checking FAIL bit after a SET_FEATURES, as documented in the
ONFI spec
Raw NAND Driver changes:
- Fix and cleanup the error path of many NAND controller drivers
- GPMI:
+ Cleanup/simplification of a few aspects in the driver
+ Take ECC setup specified in the DT into account
- sunxi: remove support for GPIO-based R/B polling
- MTK:
+ Use of_device_get_match_data() instead of of_match_device()
+ Add an entry in MAINTAINERS for this driver
+ Fix nand-ecc-step-size and nand-ecc-strength description in the
DT bindings doc
- fsl_ifc: fix ->cmdfunc() to read more than one ONFI parameter page
OneNAND driver changes:
- samsung: use dev_get_drvdata() instead of platform_get_drvdata()
SPI NOR core changes:
- Add support for a bunch of SPI NOR chips
- Clear EAR reg when switching to 3-byte addressing mode on Winbond
chips
SPI NOR controller driver changes:
- cadence: Add DMA support for direct mode reads
- hisi: Prefix a few functions with hisi_
- intel:
+ Mark the driver as "dangerous" in Kconfig
+ Fix atomic sequence handling
+ Pass a 40us delay (instead of 0us) to readl_poll_timeout()
- fsl:
+ fix a typo in a function name
+ add support for IP variants embedded in the ls2080a and ls1080a
SoCs
- stm32: request exclusive control of the reset line"
* tag 'mtd/for-4.18' of git://git.infradead.org/linux-mtd: (66 commits)
mtd: nand: Pass mode information to nand_page_io_req
mtd: cfi_cmdset_0002: Change erase one block to enable XIP once
mtd: cfi_cmdset_0002: Change erase functions to check chip good only
mtd: cfi_cmdset_0002: Change erase functions to retry for error
mtd: cfi_cmdset_0002: Change definition naming to retry write operation
mtd: cfi_cmdset_0002: Change write buffer to check correct value
mtd: cmdlinepart: Update comment for introduction of OFFSET_CONTINUOUS
mtd: bcm47xxpart: add of_match_table with a new DT binding
dt-bindings: mtd: document Broadcom's BCM47xx partitions
mtd: spi-nor: Add support for EN25QH32
mtd: spi-nor: Add support for is25wp series chips
mtd: spi-nor: Add Winbond w25q32jv support
mtd: spi-nor: fsl-quadspi: add support for ls2080a/ls1080a
mtd: spi-nor: stm32-quadspi: explicitly request exclusive reset control
mtd: spi-nor: intel: provide a range for poll_timout
mtd: spi-nor: fsl-quadspi: fix api naming typo _init_ahb_read
mtd: spi-nor: intel-spi: Explicitly mark the driver as dangerous in Kconfig
mtd: spi-nor: intel-spi: Fix atomic sequence handling
mtd: rawnand: Do not check FAIL bit when executing a SET_FEATURES op
mtd: rawnand: use bit-wise majority to recover the ONFI param page
...
The __DIVIDE() macro checks whether it is called with a 32-bit or 64-bit
dividend, to select the appropriate divide-and-round-up routine.
As the check uses the ternary operator, the result will always be
promoted to a type that can hold both results, i.e. unsigned long long.
When using this result in a division on a 32-bit system, this may lead
to link errors like:
ERROR: "__udivdi3" [drivers/mtd/nand/raw/nand.ko] undefined!
Fix this by casting the result of the division to the type of the
dividend.
Fixes: 8878b126df ("mtd: nand: add ->exec_op() implementation")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Gets rid of those warnings and better document the parameters.
./include/linux/mtd/rawnand.h:752: warning: Function parameter or member 'timings.sdr' not described in 'nand_data_interface'
./include/linux/mtd/rawnand.h:817: warning: Function parameter or member 'buf' not described in 'nand_op_data_instr'
./include/linux/mtd/rawnand.h:817: warning: Function parameter or member 'buf.in' not described in 'nand_op_data_instr'
./include/linux/mtd/rawnand.h:817: warning: Function parameter or member 'buf.out' not described in 'nand_op_data_instr'
./include/linux/mtd/rawnand.h:863: warning: Function parameter or member 'ctx' not described in 'nand_op_instr'
./include/linux/mtd/rawnand.h:863: warning: Function parameter or member 'ctx.cmd' not described in 'nand_op_instr'
./include/linux/mtd/rawnand.h:863: warning: Function parameter or member 'ctx.addr' not described in 'nand_op_instr'
./include/linux/mtd/rawnand.h:863: warning: Function parameter or member 'ctx.data' not described in 'nand_op_instr'
./include/linux/mtd/rawnand.h:863: warning: Function parameter or member 'ctx.waitrdy' not described in 'nand_op_instr'
./include/linux/mtd/rawnand.h:1010: warning: Function parameter or member 'ctx' not described in 'nand_op_parser_pattern_elem'
./include/linux/mtd/rawnand.h:1010: warning: Function parameter or member 'ctx.addr' not described in 'nand_op_parser_pattern_elem'
./include/linux/mtd/rawnand.h:1010: warning: Function parameter or member 'ctx.data' not described in 'nand_op_parser_pattern_elem'
./include/linux/mtd/rawnand.h:1313: warning: Function parameter or member 'manufacturer.desc' not described in 'nand_chip'
./include/linux/mtd/rawnand.h:1313: warning: Function parameter or member 'manufacturer.priv' not described in 'nand_chip'
./include/linux/mtd/rawnand.h:848: WARNING: Unexpected indentation.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
As part of the work of migrating all the drivers to nand_scan(), and
because nand_scan() does not provide a way to pass an ID table, rename
the function nand_scan_with_ids() and add a third parameter to give a
flash ID table (like what was done with nand_scan_ident()).
Create a nand_scan() helper that is just a wrapper of
nand_scan_with_ids(), passing NULL as the ID table. This way a
controller drivers can continue using nand_scan() transparently.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
The NAND chip parameter page is statically allocated within the
nand_chip structure, which reserves a lot of space. Even not ONFI nor
JEDEC chips have it embedded. Also, only a few parameters are actually
read from the parameter page after the detection.
Now that there is a small nand_parameters structure that hold all needed
ONFI parameters, remove the ONFI page from the nand_chip structure by
just allocating it during the identification phase and removing it right
after.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
The NAND chip parameter page is statically allocated within the
nand_chip structure, which reserves a lot of space. Even not ONFI nor
JEDEC chips have it embedded. Also, only a few parameters are actually
read from the parameter page after the detection.
Now that there is a small nand_parameters structure that can held
generic parameters, remove the JEDEC page from the nand_chip structure
by just allocating it during the identification phase and removing it
right after.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
If SET/GET_FEATURES is available (from the parameter page), use a
bitmap to declare what feature is actually supported.
Initialize the bitmap in the core to support timing changes (only
feature used by the core), also add support for Micron specific features
used in Micron initialization code (in the init routine).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
The NAND chip parameter page is statically allocated within the
nand_chip structure, which reserves a lot of space. Even not ONFI nor
JEDEC chips have it embedded. Also, only a few parameters are actually
read from the parameter page after the detection.
ONFI-related parameters that will be used outside from the
identification function are stored in a separate onfi_parameters
structure embedded in nand_parameters, this small structure that
already hold generic parameters.
For now, the onfi_parameters structure is allocated statically. However,
after some deep rework in the NAND framework, it will be possible to do
dynamic allocations from the NAND identification phase, and this
strcuture will then be dynamically allocated when needed.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
The NAND chip parameter page is statically allocated within the
nand_chip structure, which reserves a lot of space. Even not ONFI nor
JEDEC chips have it embedded. Also, only a few parameters are actually
read from the parameter page after the detection.
To prepare to the removal of such huge structure, a small NAND parameter
structure is allocated statically and contains only very few members
that are generic to all chips and actually used elsewhere in the code.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Prepare the fact that some features managed by GET/SET_FEATURES could be
overloaded by vendor code. To handle this logic, use new wrappers
instead of directly call the ->get/set_features() hooks.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
SET/GET FEATURES are flagged ONFI-compliant because of their name. This
is not accurate as non-ONFI NAND chips support it and use it.
Rename the hooks and helpers to remove the "onfi" prefix.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
GCC-4.4.4 raises errors when assigning a parameter in an anonymous
union, leading to this kind of failure:
drivers/mtd/nand/marvell_nand.c:1936:
warning: missing braces around initializer
warning: (near initialization for '(anonymous)[1].<anonymous>')
error: unknown field 'data' specified in initializer
error: unknown field 'addr' specified in initializer
Work around the situation by naming these unions.
Fixes: 8878b126df ("mtd: nand: add ->exec_op() implementation")
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Tested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Introduce a new interface to instruct NAND controllers to send specific
NAND operations. The new interface takes the form of a single method
called ->exec_op(). This method is designed to replace ->cmd_ctrl(),
->cmdfunc() and ->read/write_byte/word/buf() hooks.
->exec_op() is passed a set of instructions describing the operation
to execute. Each instruction has a type (ADDR, CMD, DATA, WAITRDY)
and delay. The delay is here to help simple controllers wait enough
time between each instruction, advanced controllers with integrated
timings control can ignore these delays.
Controllers that natively support complex operations (operations
formed of several instructions) can use the NAND op parser
infrastructure. This infrastructure allows controller drivers to
describe the sequence of instructions they support (called
nand_op_pattern) and a hook for each of these supported sequences. The
core then tries to find the best match for a given NAND operation, and
calls the associated hook.
Various other helpers are also added to ease NAND controller drivers
writing.
This new interface should ease support of vendor specific operations
in that NAND manufacturer drivers now have a way to check if the
controller they are connected to supports a specific operation, and
complain or refuse to probe the NAND chip when that's not the case.
Suggested-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
struct nand_buffers is malloc'ed in nand_scan_tail() just for
containing three pointers. Squash this struct into nand_chip.
Move and rename as follows:
chip->buffers->ecccalc -> chip->ecc.calc_buf
chip->buffers->ecccode -> chip->ecc.code_buf
chip->buffers->databuf -> chip->data_buf
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
The last/only user of NAND_OWN_BUFFERS (cafe_nand.c) has been reworked.
This flag is no longer needed.
Suggested-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Right now, the chip->data_interface field is populated in
nand_scan_tail(), so after the whole NAND detection has taken place.
This is fine because these timings are not yet used by the core so
early in the probe process, but the situation is about to change with
the introduction of ->exec_op().
Also, by convention, nand_scan_ident() is not supposed to allocate
resources, only nand_scan_tail() can, so this prevent us from
allocating and initializing the data_interface object in
nand_scan_ident().
In order to solve this problem, directly embed a data_interface object
in nand_chip so that we don't have to allocate it, and initialize it to
ONFI SDR mode 0 at the very beginning of nand_scan_ident().
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
The core currently send the READ0 and SEQIN+PAGEPROG commands in
nand_do_read/write_ops(). This is inconsistent with
->read/write_oob[_raw]() hooks behavior which are expected to send
these commands.
There's already a flag (NAND_ECC_CUSTOM_PAGE_ACCESS) to inform the core
that a specific controller wants to send the READ/SEQIN+PAGEPROG
commands on its own, but it's an opt-in flag, and existing drivers are
unlikely to be updated to pass it.
Moreover, some controllers cannot dissociate the READ/PAGEPROG commands
from the associated data transfer and ECC engine activation, and
developers have to hack things in their ->cmdfunc() implementation to
handle such complex cases, or have to accept the perf penalty of sending
twice the same command.
To address this problem we are planning on adding a new interface which
is passed all information about a NAND operation (including the amount
of data to transfer) and replacing all calls to ->cmdfunc() to calls to
this new ->exec_op() hook. But, in order to do that, we need to have all
->cmdfunc() calls placed near their associated ->read/write_buf/byte()
calls.
Modify the core and relevant drivers to make NAND_ECC_CUSTOM_PAGE_ACCESS
the default case, and remove this flag.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[miquel.raynal@free-electrons.com: tested, fixed and rebased on nand/next]
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This is part of the process of removing direct calls to ->cmdfunc()
outside of the core in order to introduce a better interface to execute
NAND operations.
Here we provide several helpers and make use of them to remove all
direct calls to ->cmdfunc(). This way, we can easily modify those
helpers to make use of the new ->exec_op() interface when available.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[miquel.raynal@free-electrons.com: rebased and fixed some conflicts]
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Several drivers check ->chipsize to see if the third row address cycle
is needed. Instead of embedding magic sizes such as 32MB, 128MB in
drivers, introduce a new flag NAND_ROW_ADDR_3 for clean-up. Since
nand_scan_ident() knows well about the device, it can handle this
properly. The flag is set if the row address bit width is greater
than 16.
Delete comments such as "One more address cycle for ..." because
intention is now clear enough from the code.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Wenyou Yang <wenyou.yang@microchip.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
* Fix memory leaks in the core
* Remove unused NAND locking support
* Rename nand.h into rawnand.h (preparing support for spi NANDs)
* Use NAND_MAX_ID_LEN where appropriate
* Fix support for 20nm Hynix chips
* Fix support for Samsung and Hynix SLC NANDs
and the following driver changes:
* Various cleanup, improvements and fixes in the qcom driver
* Fixes for bugs detected by various static code analysis tools
* Fix mxc ooblayout definition
* Add a new part_parsers to tmio and sharpsl platform data in order to
define a custom list of partition parsers
* Request the reset line in exclusive mode in the sunxi driver
* Fix a build error in the orion-nand driver when compiled for ARMv4
* Allow 64-bit mvebu platforms to select the PXA3XX driver
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Merge tag 'nand/for-4.14' of git://git.infradead.org/l2-mtd into mtd/next
From Boris:
"
This pull request contains the following core changes:
* Fix memory leaks in the core
* Remove unused NAND locking support
* Rename nand.h into rawnand.h (preparing support for spi NANDs)
* Use NAND_MAX_ID_LEN where appropriate
* Fix support for 20nm Hynix chips
* Fix support for Samsung and Hynix SLC NANDs
and the following driver changes:
* Various cleanup, improvements and fixes in the qcom driver
* Fixes for bugs detected by various static code analysis tools
* Fix mxc ooblayout definition
* Add a new part_parsers to tmio and sharpsl platform data in order to
define a custom list of partition parsers
* Request the reset line in exclusive mode in the sunxi driver
* Fix a build error in the orion-nand driver when compiled for ARMv4
* Allow 64-bit mvebu platforms to select the PXA3XX driver
"
chip->bits_per_cell which is used to determine the NAND cell type
(SLC/MLC) should always have a value != 0.
Complain loudly if the value is 0 in nand_is_slc() to catch use before
correct initialization.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
We are planning to share more code between different NAND based
devices (SPI NAND, OneNAND and raw NANDs), but before doing that
we need to move the existing include/linux/mtd/nand.h file into
include/linux/mtd/rawnand.h so we can later create a nand.h header
containing all common structure and function prototypes.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Peter Pan <peterpandong@micron.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Acked-by: Wenyou Yang <wenyou.yang@microchip.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Han Xu <han.xu@nxp.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-By: Harvey Hunt <harveyhuntnexus@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Krzysztof Halasa <khalasa@piap.pl>
Linus Torvalds