Boris Brezillon [Wed, 3 Feb 2016 18:01:31 +0000 (19:01 +0100)]
mtd: create an mtd_ooblayout_ops struct to ease ECC layout definition
ECC layout definitions are currently exposed using the nand_ecclayout
struct which embeds oobfree and eccpos arrays with predefined size.
This approach was acceptable when NAND chips were providing relatively
small OOB regions, but MLC and TLC now provide OOB regions of several
hundreds of bytes, which implies a non negligible overhead for everybody
even those who only need to support legacy NANDs.
Create an mtd_ooblayout_ops interface providing the same functionality
(expose the ECC and oobfree layout) without the need for this huge
structure.
The mtd->ecclayout is now deprecated and should be replaced by the
equivalent mtd_ooblayout_ops. In the meantime we provide a wrapper around
the ->ecclayout field to ease migration to this new model.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Wed, 3 Feb 2016 17:53:44 +0000 (18:53 +0100)]
mtd: add mtd_set_ecclayout() helper function
Add an mtd_set_ecclayout() helper function to avoid direct accesses to the
mtd->ecclayout field. This will ease future reworks of ECC layout
definition.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Wed, 3 Feb 2016 19:12:31 +0000 (20:12 +0100)]
mtd: onenand: use mtd_ooblayout_xxx() helpers where appropriate
The mtd_ooblayout_xxx() helper functions have been added to avoid direct
accesses to the ecclayout field, and thus ease for future reworks.
Use these helpers in all places where the oobfree[] and eccpos[] arrays
where directly accessed.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Fri, 18 Mar 2016 16:53:31 +0000 (17:53 +0100)]
mtd: nand: qcom: use mtd_ooblayout_xxx() helpers where appropriate
The mtd_ooblayout_xxx() helper functions have been added to avoid direct
accesses to ecclayout fields, and thus ease for future reworks.
Use these helpers in all places where the oobfree[] and eccpos[] arrays
where directly accessed.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Tested-by: Archit Taneja <architt@codeaurora.org>
Boris Brezillon [Wed, 3 Feb 2016 19:12:19 +0000 (20:12 +0100)]
mtd: nand: omap2: use mtd_ooblayout_xxx() helpers where appropriate
The mtd_ooblayout_xxx() helper functions have been added to avoid direct
accesses to the ecclayout field, and thus ease for future reworks.
Use these helpers in all places where the oobfree[] and eccpos[] arrays
where directly accessed.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Wed, 3 Feb 2016 19:12:04 +0000 (20:12 +0100)]
mtd: nand: lpc32xx: use mtd_ooblayout_xxx() helpers where appropriate
The mtd_ooblayout_xxx() helper functions have been added to avoid direct
accesses to the ecclayout field, and thus ease for future reworks.
Use these helpers in all places where the oobfree[] and eccpos[] arrays
where directly accessed.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Wed, 3 Feb 2016 19:11:44 +0000 (20:11 +0100)]
mtd: nand: gpmi: use mtd_ooblayout_xxx() helpers where appropriate
The mtd_ooblayout_xxx() helper functions have been added to avoid direct
accesses to the ecclayout field, and thus ease for future reworks.
Use these helpers in all places where the oobfree[] and eccpos[] arrays
where directly accessed.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Wed, 3 Feb 2016 19:11:32 +0000 (20:11 +0100)]
mtd: nand: fsl_ifc: use mtd_ooblayout_xxx() helpers where appropriate
The mtd_ooblayout_xxx() helper functions have been added to avoid direct
accesses to the ecclayout field, and thus ease for future reworks.
Use these helpers in all places where the oobfree[] and eccpos[] arrays
where directly accessed.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Wed, 3 Feb 2016 19:11:14 +0000 (20:11 +0100)]
mtd: nand: atmel: use mtd_ooblayout_xxx() helpers where appropriate
The mtd_ooblayout_xxx() helper functions have been added to avoid direct
accesses to the ecclayout field, and thus ease for future reworks.
Use these helpers in all places where the oobfree[] and eccpos[] arrays
where directly accessed.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Reviewed-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Boris Brezillon [Wed, 3 Feb 2016 19:11:00 +0000 (20:11 +0100)]
mtd: nand: core: use mtd_ooblayout_xxx() helpers where appropriate
The mtd_ooblayout_xxx() helper functions have been added to avoid direct
accesses to the ecclayout field, and thus ease for future reworks.
Use these helpers in all places where the oobfree[] and eccpos[] arrays
where directly accessed.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Wed, 3 Feb 2016 19:10:30 +0000 (20:10 +0100)]
mtd: use mtd_ooblayout_xxx() helpers where appropriate
The mtd_ooblayout_xxx() helper functions have been added to avoid direct
accesses to the ecclayout field, and thus ease for future reworks.
Use these helpers in all places where the oobfree[] and eccpos[] arrays
where directly accessed.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Fri, 4 Mar 2016 17:09:21 +0000 (18:09 +0100)]
mtd: nand: sunxi: make OOB retrieval optional
sunxi_nfc_hw_ecc_read_chunk() always retrieves the ECC and protected free
bytes, no matter if the user really asked for it or not. This can take a
non negligible amount of time, especially on NAND chips exposing large OOB
areas (> 1KB). Make it optional.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Fri, 4 Mar 2016 16:56:47 +0000 (17:56 +0100)]
mtd: nand: sunxi: move some ECC related operations to their own functions
In order to support DMA operations in a clean way we need to extract some
of the logic coded in sunxi_nfc_hw_ecc_read/write_page() into their own
function.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Mon, 7 Mar 2016 14:34:39 +0000 (15:34 +0100)]
mtd: nand: sunxi: poll for events instead of using interrupts
Some NAND operations are so fast that it doesn't make any sense to use
interrupt based waits (the scheduling overhead is not worth it).
Rename sunxi_nfc_wait_int() into sunxi_nfc_wait_events() and add a
parameter to specify whether polling should be used or not.
Note that all sunxi_nfc_wait_int() are moved to the polling approach now,
but this should change as soon as we have more information about the
approximate time we are about to wait (can be extracted from the NAND
timings, and the type of operation).
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Fri, 4 Mar 2016 16:21:35 +0000 (17:21 +0100)]
mtd: nand: sunxi: let the NAND controller control the CE line
We don't need to manually toggle the CE line since the controller handles
it for us. Moreover, keeping the CE line low when interacting with a DDR
NAND can be problematic (data loss in some corner cases).
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Wed, 16 Sep 2015 07:05:31 +0000 (09:05 +0200)]
mtd: nand: sunxi: improve ->cmd_ctrl() function
Try to pack address and command cycles into a single NAND controller
command to avoid polling the status register for each single change
on the NAND bus.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Wed, 16 Sep 2015 07:01:45 +0000 (09:01 +0200)]
mtd: nand: sunxi: implement ->read_subpage()
Being able to read subpages can greatly improve read performances if the
MTD user is only interested in a small section of a NAND page.
This is particularly true with large pages (>= 8k).
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Allwinner's ECC engine is capable of protecting a few bytes of the OOB
area. Implement specific OOB functions to benefit from this capability.
Also, when in raw mode, the randomizer is disabled, which means you'll
only be able to retrieve randomized data, which is not really useful
for most applications.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Export the default read/write oob functions (for the standard and syndrome
scheme), so that drivers can use them for their raw implementation and
implement their own functions for the normal oob operation.
This is required if your ECC engine is capable of fixing some of the OOB
data. In this case you have to overload the ->read_oob() and ->write_oob(),
but if you don't specify the ->read/write_oob_raw() functions they are
assigned to the ->read/write_oob() implementation, which is not what you
want.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Wed, 11 Nov 2015 21:30:30 +0000 (22:30 +0100)]
mtd: nand: sunxi: adapt clk_rate to tWB, tADL, tWHR and tRHW timings
Adapt the NAND controller clk rate to the tWB, tADL, tWHR and tRHW
timings instead of returning an error when the maximum clk divisor is
not big enough to provide an appropriate timing.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Wed, 2 Dec 2015 14:57:20 +0000 (15:57 +0100)]
mtd: nand: sunxi: fix EDO mode selection
The ONFI spec says that EDO should be enabled if the host drives tRC less
than 30ns, but the code just tests for the tRC_min value extracted from
the timings exposed by the NAND chip not the timings actually configured
in the NAND controller.
Fix that by first rounding down the requested clk_rate with
clk_round_rate() and then checking if tRC is actually smaller than 30ns.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Wed, 2 Dec 2015 15:00:57 +0000 (16:00 +0100)]
mtd: nand: sunxi: fix call order in sunxi_nand_chip_init()
sunxi_nand_chip_set_timings() is extracting a pointer to the nfc from the
nand->controller field, but this field is initialized after
sunxi_nand_chip_set_timings() call.
Reorder the calls to avoid any problem.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Fri, 1 Apr 2016 12:54:30 +0000 (14:54 +0200)]
mtd: nand: pxa3xx: rely on generic DT parsing done in nand_scan_ident()
The core now takes care of parsing generic DT properties in
nand_scan_ident() when nand_set_flash_node() has been called.
Rely on this initialization instead of calling of_get_nand_xxx()
manually.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Boris Brezillon [Fri, 1 Apr 2016 12:54:22 +0000 (14:54 +0200)]
mtd: nand: atmel: rely on generic DT parsing done in nand_scan_ident()
The core now takes care of parsing generic DT properties in
nand_scan_ident() when nand_set_flash_node() has been called.
Rely on this initialization instead of calling of_get_nand_xxx()
manually.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Tested-by: Boris Brezillon <boris.brezillon@free-electrons.com> Reviewed-by: Nicolas Ferre <nicolas.ferre@atmel.com>
mtd: nand: pasemi: switch to dev_* printing functions
It also contains some minor related changes:
1) Don't warn if kzalloc fails as it dumps stack on its own
2) Use %pR format for displaying whole resource to avoid invalid format
warning
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Fri, 1 Apr 2016 12:54:24 +0000 (14:54 +0200)]
mtd: nand: brcm: rely on generic DT parsing done in nand_scan_ident()
The core now takes care of parsing generic DT properties in
nand_scan_ident() when nand_set_flash_node() has been called.
Rely on this initialization instead of calling of_get_nand_xxx()
manually.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Brian Norris <computersforpeace@gmail.com>
Boris Brezillon [Tue, 19 Apr 2016 18:29:58 +0000 (20:29 +0200)]
mtd: nand: omap2: rely on generic DT parsing done in nand_scan_ident()
The core now takes care of parsing generic DT properties in
nand_scan_ident() when nand_set_flash_node() has been called.
Rely on this initialization instead of calling of_get_nand_xxx()
manually.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Roger Quadros <rogerq@ti.com> Tested-by: Franklin S Cooper Jr. <fcooper@ti.com>
mtd: nand: s3c2410: fix bug in s3c2410_nand_correct_data()
If there is only one bit difference in the ECC, the function should
return 1.
The result of "diff0 & ~(1<<fls(diff0))" is equal to diff0, so the
function actually returns -1.
Signed-off-by: Zhaoxiu Zeng <zhaoxiu.zeng@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Raghav Dogra [Wed, 17 Feb 2016 11:24:18 +0000 (16:54 +0530)]
mtd/ifc: Add support for IFC controller version 2.0
The new IFC controller version 2.0 has a different memory map page.
Upto IFC 1.4 PAGE size is 4 KB and from IFC2.0 PAGE size is 64KB.
This patch segregates the IFC global and runtime registers to appropriate
PAGE sizes.
Signed-off-by: Jaiprakash Singh <b44839@freescale.com> Signed-off-by: Raghav Dogra <raghav@freescale.com> Acked-by: Li Yang <leoyang.li@nxp.com> Signed-off-by: Raghav Dogra <raghav.dogra@nxp.com> Acked-by: Scott Wood <oss@buserror.net> Acked-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
There's no reason to BUG() when parameters are being
validated. Drivers can get things wrong, and it's much nicer
to just throw a noisy warn and fail gracefully, than calling
BUG() and throwing the whole system down the drain.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Reviewed-by: Richard Weinberger <richard@nod.at> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
fix the raw_buffer pointer double free issue found by coverify.
CID 18344 (#2 of 2): Double free (USE_AFTER_FREE)
3. double_free: Calling gpmi_alloc_dma_buffer frees pointer
this->raw_buffer which has already been freed
Signed-off-by: Han Xu <han.xu@nxp.com> Reviewed-by: Richard Weinberger <richard@nod.at> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Florian Fainelli [Thu, 10 Mar 2016 23:34:16 +0000 (15:34 -0800)]
mtd: brcmnand: Add support for v6.2 controllers
Document and match the brcm,brcmnand-v6.2 compatible string, the controller has
a register layout identical to the v6.0 version and supports prefetch. Update the
command shift logic to account for v6.2 controller which are the first ones to
use a shift of 0 (6.1 used a shift of 24).
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Fri, 1 Apr 2016 12:26:35 +0000 (14:26 +0200)]
mtd: nand: document the NAND controller/NAND chip DT representation
Standardize the NAND controller/NAND chip DT representation. Now, all new
NAND controller drivers should comply with this representation, even if
they are only supporting a single NAND chip.
Existing drivers can keep support for the old representation (where only
the NAND chip was described), but are encouraged to also support the new
one.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Rob Herring <robh@kernel.org>
Boris Brezillon [Tue, 1 Mar 2016 13:11:52 +0000 (14:11 +0100)]
mtd: nand: atmel: correct bitflips in erased pages for pre-sama5d4 SoCs
New atmel SoCs are able to fix bitflips in erased pages, but old ones
are still impacted by this problem. Use nand_check_erased_ecc_chunk() to
handle this case.
Rafał Miłecki [Wed, 23 Mar 2016 10:19:01 +0000 (11:19 +0100)]
of: mtd: prepare helper reading NAND ECC algo from DT
NAND subsystem is being slightly reworked to store ECC details in
separated fields. In future we'll want to add support for more DT
properties as specifying every possible setup with a single
"nand-ecc-mode" is a pretty bad idea.
To allow this let's add a helper that will support something like
"nand-ecc-algo" in future. Right now we use it for keeping backward
compatibility.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Rafał Miłecki [Wed, 23 Mar 2016 10:19:00 +0000 (11:19 +0100)]
mtd: nand: add new enum for storing ECC algorithm
Our nand_ecc_modes_t is already a bit abused by value NAND_ECC_SOFT_BCH.
This enum should store ECC mode only and putting algorithm details there
is a bad idea. It would result in too many values impossible to support
in a sane way.
To solve this problem let's add a new enum. We'll have to modify all
drivers to set it properly but once it's done it'll be possible to drop
NAND_ECC_SOFT_BCH. That will result in a cleaner design and more
possibilities like setting ECC algorithm for hardware ECC mode.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon [Tue, 19 Apr 2016 19:44:11 +0000 (21:44 +0200)]
Merge branch 'mtd-nand-trigger' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds into nand/next
Pull leds-trigger changes from Jacek Anaszewski.
Create a generic mtd led-trigger to replace the exisitng nand led-trigger
implementation.
* 'mtd-nand-trigger' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
mtd: Hook I/O activity to the MTD LED trigger
mtd: nand: Remove the "nand-disk" LED trigger
leds: trigger: Introduce a MTD (NAND/NOR) trigger
mtd: Uninline mtd_write_oob and move it to mtdcore.c
leds: trigger: Introduce a kernel panic LED trigger
Boris Brezillon [Tue, 19 Apr 2016 19:39:22 +0000 (21:39 +0200)]
Merge branch 'for-v4.7/gpmc-mtd-common' of github.com:rogerq/linux into nand/next
Pull NAND/GPMC updates from Roger Quadros:
"We do a couple of things in this series which result in cleaner device
tree implementation, faster perfomance and multi-platform support. As
an added bonus we get to use the GPMC_WAIT pins as GPI/Interrupts.
- Establish a custom interface between NAND and GPMC driver. This is
needed because all of the NAND registers sit in the GPMC register
space.
- Clean up device tree support so that omap-gpmc IP and the omap2 NAND
driver can be used on non-OMAP platforms. e.g. Keystone.
- Implement GPIOCHIP for the GPMC WAITPINS. SoCs can contain 2 to 4 of
these and most of them would be unused otherwise. It also allows a
cleaner implementation of NAND Ready pin status for the NAND driver.
- Implement GPMC IRQ domain to proivde the 2 NAND events and GPMC
WAITPIN edge interrupts.
- Implement GPIOlib based NAND ready pin checking for OMAP NAND driver.
On dra7-evm, Read speed increases from 13768 KiB/ to 17246 KiB/s.
Write speed was unchanged at 7123 KiB/s."
* 'for-v4.7/gpmc-mtd-common' of github.com:rogerq/linux:
mtd: nand: omap2: Implement NAND ready using gpiolib
memory: omap-gpmc: Prevent GPMC_STATUS from being accessed via gpmc_regs
memory: omap-gpmc: Support WAIT pin edge interrupts
memory: omap-gpmc: Reserve WAITPIN if needed for WAIT monitoring
memory: omap-gpmc: Support general purpose input for WAITPINs
memory: omap-gpmc: Move device tree binding to correct location
memory: omap-gpmc: Prevent mapping into 1st 16MB
mtd: nand: omap: Update DT binding documentation
mtd: nand: omap: Clean up device tree support
mtd: nand: omap: Copy platform data parameters to omap_nand_info data
mtd: nand: omap: Switch to using GPMC-NAND ops for writebuffer empty check
mtd: nand: omap: Use gpmc_omap_get_nand_ops() to get NAND registers
memory: omap-gpmc: Implement IRQ domain for NAND IRQs
memory: omap-gpmc: Add GPMC-NAND ops to get writebufferempty status
memory: omap-gpmc: Introduce GPMC to NAND interface
ARM: OMAP2+: gpmc: Add gpmc timings and settings to platform data
ARM: OMAP2+: gpmc: Add platform data
Roger Quadros [Thu, 6 Aug 2015 14:39:35 +0000 (17:39 +0300)]
mtd: nand: omap2: Implement NAND ready using gpiolib
The GPMC WAIT pin status are now available over gpiolib.
Update the omap_dev_ready() function to use gpio instead of
directly accessing GPMC register space.
Signed-off-by: Roger Quadros <rogerq@ti.com> Acked-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Mon, 26 May 2014 08:54:45 +0000 (11:54 +0300)]
mtd: nand: omap: Update DT binding documentation
Add compatible id and interrupts. The NAND interrupts are
provided by the GPMC controller node.
Signed-off-by: Roger Quadros <rogerq@ti.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Tue, 20 May 2014 19:29:28 +0000 (22:29 +0300)]
mtd: nand: omap: Copy platform data parameters to omap_nand_info data
Copy all the platform data parameters to the driver's local data
structure 'omap_nand_info' and use it in the entire driver. This will
make it easer for device tree migration.
Signed-off-by: Roger Quadros <rogerq@ti.com> Acked-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Wed, 5 Aug 2015 10:36:43 +0000 (13:36 +0300)]
mtd: nand: omap: Switch to using GPMC-NAND ops for writebuffer empty check
Instead of accessing the gpmc_status register directly start
using the gpmc_nand_ops->nand_writebuffer_empty() helper
to check write buffer empty status.
Signed-off-by: Roger Quadros <rogerq@ti.com> Acked-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Thu, 30 Jul 2015 11:49:23 +0000 (14:49 +0300)]
memory: omap-gpmc: Implement IRQ domain for NAND IRQs
GPMC provides 2 interrupts for NAND use. i.e. fifoevent and termcount.
Use IRQ domain for this. NAND device tree node can then
get the necessary interrupts by using gpmc as the interrupt parent.
Legacy boot uses gpmc_get_client_irq to get the
NAND interrupts from the GPMC IRQ domain.
Get rid of custom bitmasks and use IRQ domain for that
as well.
Signed-off-by: Roger Quadros <rogerq@ti.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Wed, 5 Aug 2015 10:58:01 +0000 (13:58 +0300)]
memory: omap-gpmc: Introduce GPMC to NAND interface
The OMAP GPMC module has certain registers dedicated for NAND
access and some NAND bits mixed with other GPMC functionality.
For the NAND dedicated registers we have the struct gpmc_nand_regs.
The NAND driver needs to access NAND specific bits from the
following non-dedicated registers
- EMPTYWRITEBUFFERSTATUS from GPMC_STATUS
For accessing these bits we introduce the struct gpmc_nand_ops.
Add gpmc_omap_get_nand_ops() that returns the gpmc_nand_ops along
with updating the gpmc_nand_regs. This API will be called by the
OMAP NAND driver to access the necessary bits in GPMC register space.
Signed-off-by: Roger Quadros <rogerq@ti.com> Acked-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Fri, 10 Jul 2015 12:23:28 +0000 (15:23 +0300)]
ARM: OMAP2+: gpmc: Add platform data
Add a platform data structure for GPMC. It contains all the necessary
platform information that needs to be passed from platform init code
to GPMC driver.
Signed-off-by: Roger Quadros <rogerq@ti.com> Acked-by: Tony Lindgren <tony@atomide.com>
This commit removes the "nand-disk" LED trigger from the
NAND code.
A trigger with the same name is already available selecting
LEDS_TRIGGER_MTD. Note that "nand-disk" trigger is being
deprecated in favor of the "mtd" trigger.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
This commit introduces a MTD trigger for flash (NAND/NOR) device
activity. The implementation is copied from IDE disk.
This trigger deprecates the "nand-disk" LED trigger, but for backwards
compatibility, we still keep the "nand-disk" trigger around.
The motivation for deprecating the "nand-disk" LED trigger is that
it only works for NAND drivers, whereas the "mtd" LED trigger
is more generic (in fact, "nand-disk" currently only works for
certain NAND drivers).
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Ezequiel Garcia [Tue, 29 Mar 2016 20:35:47 +0000 (17:35 -0300)]
leds: trigger: Introduce a kernel panic LED trigger
This commit introduces a new LED trigger which allows to configure
a LED to blink on a kernel panic (through panic_blink).
Notice that currently the Openmoko FreeRunner (GTA02) mach code
sets panic_blink to blink a hard-coded LED. The new trigger is
meant to introduce a generic mechanism to achieve this.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Linus Torvalds [Sat, 26 Mar 2016 22:53:16 +0000 (15:53 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull Ceph updates from Sage Weil:
"There is quite a bit here, including some overdue refactoring and
cleanup on the mon_client and osd_client code from Ilya, scattered
writeback support for CephFS and a pile of bug fixes from Zheng, and a
few random cleanups and fixes from others"
[ I already decided not to pull this because of it having been rebased
recently, but ended up changing my mind after all. Next time I'll
really hold people to it. Oh well. - Linus ]
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (34 commits)
libceph: use KMEM_CACHE macro
ceph: use kmem_cache_zalloc
rbd: use KMEM_CACHE macro
ceph: use lookup request to revalidate dentry
ceph: kill ceph_get_dentry_parent_inode()
ceph: fix security xattr deadlock
ceph: don't request vxattrs from MDS
ceph: fix mounting same fs multiple times
ceph: remove unnecessary NULL check
ceph: avoid updating directory inode's i_size accidentally
ceph: fix race during filling readdir cache
libceph: use sizeof_footer() more
ceph: kill ceph_empty_snapc
ceph: fix a wrong comparison
ceph: replace CURRENT_TIME by current_fs_time()
ceph: scattered page writeback
libceph: add helper that duplicates last extent operation
libceph: enable large, variable-sized OSD requests
libceph: osdc->req_mempool should be backed by a slab pool
libceph: make r_request msg_size calculation clearer
...
Linus Torvalds [Sat, 26 Mar 2016 19:59:04 +0000 (12:59 -0700)]
Merge tag 'ofs-pull-tag-1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux
Pull orangefs filesystem from Mike Marshall.
This finally merges the long-pending orangefs filesystem, which has been
much cleaned up with input from Al Viro over the last six months. From
the documentation file:
"OrangeFS is an LGPL userspace scale-out parallel storage system. It
is ideal for large storage problems faced by HPC, BigData, Streaming
Video, Genomics, Bioinformatics.
Orangefs, originally called PVFS, was first developed in 1993 by Walt
Ligon and Eric Blumer as a parallel file system for Parallel Virtual
Machine (PVM) as part of a NASA grant to study the I/O patterns of
parallel programs.
Orangefs features include:
- Distributes file data among multiple file servers
- Supports simultaneous access by multiple clients
- Stores file data and metadata on servers using local file system
and access methods
- Userspace implementation is easy to install and maintain
- Direct MPI support
- Stateless"
see Documentation/filesystems/orangefs.txt for more in-depth details.
* tag 'ofs-pull-tag-1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux: (174 commits)
orangefs: fix orangefs_superblock locking
orangefs: fix do_readv_writev() handling of error halfway through
orangefs: have ->kill_sb() evict the VFS side of things first
orangefs: sanitize ->llseek()
orangefs-bufmap.h: trim unused junk
orangefs: saner calling conventions for getting a slot
orangefs_copy_{to,from}_bufmap(): don't pass bufmap pointer
orangefs: get rid of readdir_handle_s
ornagefs: ensure that truncate has an up to date inode size
orangefs: move code which sets i_link to orangefs_inode_getattr
orangefs: remove needless wrapper around GFP_KERNEL
orangefs: remove wrapper around mutex_lock(&inode->i_mutex)
orangefs: refactor inode type or link_target change detection
orangefs: use new getattr for revalidate and remove old getattr
orangefs: use new getattr in inode getattr and permission
orangefs: use new orangefs_inode_getattr to get size in write and llseek
orangefs: use new orangefs_inode_getattr to create new inodes
orangefs: rename orangefs_inode_getattr to orangefs_inode_old_getattr
orangefs: remove inode->i_lock wrapper
orangefs: put register_chrdev immediately before register_filesystem
...
Linus Torvalds [Sat, 26 Mar 2016 18:37:42 +0000 (11:37 -0700)]
Merge tag 'ntb-4.6' of git://github.com/jonmason/ntb
Pull NTB bug fixes from Jon Mason:
"NTB bug fixes for tasklet from spinning forever, link errors,
translation window setup, NULL ptr dereference, and ntb-perf errors.
Also, a modification to the driver API that makes _addr functions
optional"
* tag 'ntb-4.6' of git://github.com/jonmason/ntb:
NTB: Remove _addr functions from ntb_hw_amd
NTB: Make _addr functions optional in the API
NTB: Fix incorrect clean up routine in ntb_perf
NTB: Fix incorrect return check in ntb_perf
ntb: fix possible NULL dereference
ntb: add missing setup of translation window
ntb: stop link work when we do not have memory
ntb: stop tasklet from spinning forever during shutdown.
ntb: perf test: fix address space confusion
Linus Torvalds [Sat, 26 Mar 2016 18:31:01 +0000 (11:31 -0700)]
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull more SCSI updates from James Bottomley:
"The only new stuff which missed the first pull request is an update to
the UFS driver.
The rest is an assortment of bug fixes and minor tweaks which appeared
recently (some are fixes for recent code and some are stuff spotted
recently by the checkers or the new gcc-6 compiler [most of Arnd's
stuff])"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (32 commits)
scsi_common: do not clobber fixed sense information
scsi: ufs: select CONFIG_NLS
scsi: fc: use get/put_unaligned64 for wwn access
fnic: move printk()s outside of the critical code section.
qla2xxx: avoid maybe_uninitialized warning
megaraid_sas: add missing curly braces in ioctl handler
lpfc: fix misleading indentation
scsi_transport_sas: add 'scsi_target_id' sysfs attribute
scsi_dh_alua: uninitialized variable in alua_check_vpd()
scsi: ufs-qcom: add printouts of testbus debug registers
scsi: ufs-qcom: enable/disable the device ref clock
scsi: ufs-qcom: set PA_Local_TX_LCC_Enable before link startup
scsi: ufs: add device quirk delay before putting UFS rails in LPM
scsi: ufs: fix leakage during link off state
scsi: ufs: tune UniPro parameters to optimize hibern8 exit time
scsi: ufs: handle non spec compliant bkops behaviour by device
scsi: ufs: add retry for query descriptors
scsi: ufs: add error recovery after DL NAC error
scsi: ufs: make error handling bit faster
scsi: ufs: disable vccq if it's not needed by UFS device
...
Linus Torvalds [Sat, 26 Mar 2016 17:13:05 +0000 (10:13 -0700)]
f2fs/crypto: fix xts_tweak initialization
Commit 0b81d07790726 ("fs crypto: move per-file encryption from f2fs
tree to fs/crypto") moved the f2fs crypto files to fs/crypto/ and
renamed the symbol prefixes from "f2fs_" to "fscrypt_" (and from "F2FS_"
to just "FS" for preprocessor symbols).
Because of the symbol renaming, it's a bit hard to see it as a file
move: use
to lower the rename detection to just 30% similarity and make git show
the files as renamed (the header file won't be shown as a rename even
then - since all it contains is symbol definitions, it looks almost
completely different).
Even with the renames showing as renames, the diffs are not all that
easy to read, since so much is just the renames. But Eric Biggers
noticed that it's not just all renames: the initialization of the
xts_tweak had been broken too, using the inode number rather than the
page offset.
That's not right - it makes the xfs_tweak the same for all pages of each
inode. It _might_ make sense to make the xfs_tweak contain both the
offset _and_ the inode number, but not just the inode number.
Reported-by: Eric Biggers <ebiggers3@gmail.com> Cc: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Allen Hubbe [Mon, 21 Mar 2016 08:53:14 +0000 (04:53 -0400)]
NTB: Remove _addr functions from ntb_hw_amd
Kernel zero day testing warned about address space confusion. A virtual
iomem address was used where a physical address is expected. The
offending functions implement an optional part of the api, so they are
removed. They can be added later, after testing.
Fixes: a1b3695820aa490e58915d720a1438069813008b Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Acked-by: Xiangliang Yu <Xiangliang.Yu@amd.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
Al Viro [Fri, 25 Mar 2016 23:56:34 +0000 (19:56 -0400)]
orangefs: fix orangefs_superblock locking
* switch orangefs_remount() to taking ORANGEFS_SB(sb) instead of sb
* remove from the list _before_ orangefs_unmount() - request_mutex
in the latter will make sure that nothing observed in the loop in
ORANGEFS_DEV_REMOUNT_ALL handling will get freed until the end
of loop
* on removal, keep the forward pointer and zero the back one. That
way we can drop and regain the spinlock in the loop body (again,
ORANGEFS_DEV_REMOUNT_ALL one) and still be able to get to the
rest of the list.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
projects / linux-beck.git / log