Pull core irq changes from Ingo Molnar:
"A collection of small fixes."
By Thomas Gleixner
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hexagon: Remove select of not longer existing Kconfig switches
arm: Select core options instead of redefining them
genirq: Do not consider disabled wakeup irqs
genirq: Allow check_wakeup_irqs to notice level-triggered interrupts
genirq: Be more informative on irq type mismatch
genirq: Reject bogus threaded irq requests
genirq: Streamline irq_action
Pull smp hotplug cleanups from Thomas Gleixner:
"This series is merily a cleanup of code copied around in arch/* and
not changing any of the real cpu hotplug horrors yet. I wish I'd had
something more substantial for 3.5, but I underestimated the lurking
horror..."
Fix up trivial conflicts in arch/{arm,sparc,x86}/Kconfig and
arch/sparc/include/asm/thread_info_32.h
* 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (79 commits)
um: Remove leftover declaration of alloc_task_struct_node()
task_allocator: Use config switches instead of magic defines
sparc: Use common threadinfo allocator
score: Use common threadinfo allocator
sh-use-common-threadinfo-allocator
mn10300: Use common threadinfo allocator
powerpc: Use common threadinfo allocator
mips: Use common threadinfo allocator
hexagon: Use common threadinfo allocator
m32r: Use common threadinfo allocator
frv: Use common threadinfo allocator
cris: Use common threadinfo allocator
x86: Use common threadinfo allocator
c6x: Use common threadinfo allocator
fork: Provide kmemcache based thread_info allocator
tile: Use common threadinfo allocator
fork: Provide weak arch_release_[task_struct|thread_info] functions
fork: Move thread info gfp flags to header
fork: Remove the weak insanity
sh: Remove cpu_idle_wait()
...
Pull core ARM updates from Russell King:
"This is the bulk of the core ARM updates for this merge window.
Included in here is a different way to handle the VIVT cache flushing
on context switch, which should allow scheduler folk to remove a
special case in their core code.
We have architectured timer support here, which is a set of timers
specified by the ARM architecture for future SoCs. So we should see
less variability in timer design going forward.
The last big thing here is my cleanup to the way we handle PCI across
ARM, fixing some oddities in some platforms which hadn't realised
there was a way to deal with their private data already built in to
our PCI backend.
I've also removed support for the ARMv3 architecture; it hasn't worked
properly for years so it seems pointless to keep it around."
* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (47 commits)
ARM: PCI: remove per-pci_hw list of buses
ARM: PCI: dove/kirkwood/mv78xx0: use sys->private_data
ARM: PCI: provide a default bus scan implementation
ARM: PCI: get rid of pci_std_swizzle()
ARM: PCI: versatile: fix PCI interrupt setup
ARM: PCI: integrator: use common PCI swizzle
ARM: 7416/1: LPAE: Remove unused L_PTE_(BUFFERABLE|CACHEABLE) macros
ARM: 7415/1: vfp: convert printk's to pr_*'s
ARM: decompressor: avoid speculative prefetch from non-RAM areas
ARM: Remove ARMv3 support from decompressor
ARM: 7413/1: move read_{boot,persistent}_clock to the architecture level
ARM: Remove support for ARMv3 ARM610 and ARM710 CPUs
ARM: 7363/1: DEBUG_LL: limit early mapping to the minimum
ARM: 7391/1: versatile: add some auxdata for device trees
ARM: 7389/2: plat-versatile: modernize FPGA IRQ controller
AMBA: get rid of last two uses of NO_IRQ
ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails
ARM: 7409/1: Do not call flush_cache_user_range with mmap_sem held
ARM: 7404/1: cmpxchg64: use atomic64 and local64 routines for cmpxchg64
ARM: 7347/1: SCU: use cpu_logical_map for per-CPU low power mode
...
Sigh, I missed to check which architecture Kconfig files actually
include the core Kconfig file. There are a few which did not. So we
broke them.
Instead of adding the includes to those, we are better off to move the
include to init/Kconfig like we did already with irqs and others.
This does not change anything for the architectures using the old
style periodic timer mode. It just solves the build wreckage there.
For those architectures which use the clock events infrastructure it
moves the include of the core Kconfig file to "General setup" which is
a way more logical place than having it at random locations specified
by the architecture specific Kconfigs.
Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Anna-Maria Gleixner <anna-maria@glx-um.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
There is no point having the NET dependency on the select target, as it
forces all users to depend on NET to tell they support BPF_JIT. Move
the config option to the bottom of the file - this could be a nice place
also for future "selectable" config symbols.
Fix up all users to drop the dependency on NET now that it is not
required to supress warnings for non-NET builds.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch adds support for CMA to dma-mapping subsystem for ARM
architecture. By default a global CMA area is used, but specific devices
are allowed to have their private memory areas if required (they can be
created with dma_declare_contiguous() function during board
initialisation).
Contiguous memory areas reserved for DMA are remapped with 2-level page
tables on boot. Once a buffer is requested, a low memory kernel mapping
is updated to to match requested memory access type.
GFP_ATOMIC allocations are performed from special pool which is created
early during boot. This way remapping page attributes is not needed on
allocation time.
CMA has been enabled unconditionally for ARMv6+ systems.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Michal Nazarewicz <mina86@mina86.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Rob Clark <rob.clark@linaro.org>
Tested-by: Ohad Ben-Cohen <ohad@wizery.com>
Tested-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Tested-by: Robert Nelson <robertcnelson@gmail.com>
Tested-by: Barry Song <Baohua.Song@csr.com>
This patch add a complete implementation of DMA-mapping API for
devices which have IOMMU support.
This implementation tries to optimize dma address space usage by remapping
all possible physical memory chunks into a single dma address space chunk.
DMA address space is managed on top of the bitmap stored in the
dma_iommu_mapping structure stored in device->archdata. Platform setup
code has to initialize parameters of the dma address space (base address,
size, allocation precision order) with arm_iommu_create_mapping() function.
To reduce the size of the bitmap, all allocations are aligned to the
specified order of base 4 KiB pages.
dma_alloc_* functions allocate physical memory in chunks, each with
alloc_pages() function to avoid failing if the physical memory gets
fragmented. In worst case the allocated buffer is composed of 4 KiB page
chunks.
dma_map_sg() function minimizes the total number of dma address space
chunks by merging of physical memory chunks into one larger dma address
space chunk. If requested chunk (scatter list entry) boundaries
match physical page boundaries, most calls to dma_map_sg() requests will
result in creating only one chunk in dma address space.
dma_map_page() simply creates a mapping for the given page(s) in the dma
address space.
All dma functions also perform required cache operation like their
counterparts from the arm linear physical memory mapping version.
This patch contains code and fixes kindly provided by:
- Krishna Reddy <vdumpa@nvidia.com>,
- Andrzej Pietrasiewicz <andrzej.p@samsung.com>,
- Hiroshi DOYU <hdoyu@nvidia.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-By: Subash Patel <subash.ramaswamy@linaro.org>
This patch modifies dma-mapping implementation on ARM architecture to
use common dma_map_ops structure and asm-generic/dma-mapping-common.h
helpers.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-By: Subash Patel <subash.ramaswamy@linaro.org>
HARDIRQS_SW_RESEND and GENERIC_IRQ_PROBE are already defined as config
switches in the core Kconfig file. Select them instead of defining
them in ARM.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* 'clk-next' of git://git.linaro.org/people/mturquette/linux:
clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
clk: Provide dummy clk_unregister()
ARM: Kirkwood: Replace clock gating
ARM: Orion: Audio: Add clk/clkdev support
ARM: Orion: PCIE: Add support for clk
ARM: Orion: XOR: Add support for clk
ARM: Orion: CESA: Add support for clk
ARM: Orion: SDIO: Add support for clk.
ARM: Orion: NAND: Add support for clk, if there is one.
ARM: Orion: EHCI: Add support for enabling clocks
ARM: Orion: SATA: Add per channel clk/clkdev support.
ARM: Orion: UART: Get the clock rate via clk_get_rate().
ARM: Orion: WDT: Add clk/clkdev support
ARM: Orion: Eth: Add clk/clkdev support.
ARM: Orion: SPI: Add clk/clkdev support.
ARM: Orion: Add clocks using the generic clk infrastructure.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* clps711x/cleanup:
ARM: clps711x: Cleanup IRQ handling
ARM clps711x: Removed unused header mach/time.h
ARM: clps711x: Added note about support EP731x CPU to Kconfig
ARM: clps711x: Added missing register definitions
ARM: clps711x: Used own subarch directory for store header file
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The nomadik gpio code has been converted to pinctrl, but the nomadik platform
still expects the old code to be present. Change it to use the new one instead.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
* 'dt' of git://github.com/hzhuang1/linux:
Documentation: update docs for mmp dt
ARM: dts: refresh dts file for arch mmp
ARM: mmp: support pxa910 with device tree
ARM: mmp: support mmp2 with device tree
gpio: pxa: parse gpio from DTS file
ARM: mmp: support DT in timer
ARM: mmp: support DT in irq
ARM: mmp: append CONFIG_MACH_MMP2_DT
ARM: mmp: fix build issue on mmp with device tree
Includes an update to v3-4-rc5
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
ep7312 has been supported for a very long time, but has never
been mentioned in the Kconfig file.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Since just plat-samsung can support all of Samsung stuff so
that there is no more need to keep the plat-s5p for S5P SoCs.
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
SPEAr SoCs used its own clock framework since now. From now on they will move to
use common clock framework.
This patch updates existing SPEAr machine support to adapt for common clock
framework.
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Reviewed-by: Mike Turquette <mturquette@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
As the ultimate for mxs platform is to convert over to device tree,
let's start always building in device tree support for the platform.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Rather than requiring architectures that use gpiolib but don't have any
need to define anything custom to copy an asm/gpio.h provide a Kconfig
symbol which architectures must select in order to include gpio.h and
for other architectures just provide the trivial implementation directly.
This makes it much easier to do gpiolib updates and is also a step towards
making gpiolib APIs available on every architecture.
For architectures with existing boilerplate code leave a stub header in
place which warns on direct inclusion of asm/gpio.h and includes
linux/gpio.h to catch code that's doing this. Direct inclusion of
asm/gpio.h has long been deprecated.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jonas Bonn <jonas@southpole.se>
Acked-by: Tony Luck <tony.luck@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
By Stephen Warren
via Stephen Warren
* 'for-3.5/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
ARM: disable SUSPEND/ARCH_SUSPEND_POSSIBLE for ARCH_TEGRA
ARM: tegra: add pll_x freq table entry for 750MHz
Signed-off-by: Olof Johansson <olof@lixom.net>
Linux 3.4-rc6
Resolve conflict where an u5500 file had a bugfix go in, but was
deleted in the branch staged for next merge window.
Signed-off-by: Olof Johansson <olof@lixom.net>
"Jean-Christophe PLAGNIOL-VILLARD" <plagnioj@jcrosoft.com> writes:
ARM: AT91 more DT material
New SoC conversion and boards support
SoC convertion to DT:
- at91sam9260
- at91sam9263
boards:
- Atmel at91sam9g20ek/9263ek
- Calao TNY-A9260/A9263/A9G20
- Calao USB-A9260/A9263
- Ethernnut 5
- Kizbox
* tag 'at91-for-next-dt' of git://github.com/at91linux/linux-at91: (32 commits)
Ethernut 5 board support
ARM: at91: add kizbox board dt support.
ARM: at91: DT: add Calao TNY A9263 board support
ARM: at91: DT: add Calao USB A9263 board support
ARM: at91: add at91sam9263ek DT support
ARM: at91: add at91sam9263 DT support
ARM: at91: standard device init only if DT is not populated.
ARM: at91: DT: add Calao USB A9260 DT support
ARM: at91: Calao USB A926x factorize common binding in usb_a9260_common
ARM: at91: USB A926x update nand partition
ARM: at91: add at91sam9g20ek boards dt support
arm: at91: add Calao TNY-A9260 and TNY-A9G20 board support
ARM: at91: add at91sam9260 DT support
ARM: at91: add defconfig for device tree
ARM: at91/dt: do not specify the board any more
ARN: at91: introduce SOC_AT91xxx define to allow to compile SoC core support
ARM: at91: add SOC_AT91SAM9 kconfig option to factorise select
ARM: at91: pm select memory controler at runtime
ARM: at91: move at91_init_leds to board init
ARM: at91: do not pin mux the UARTs in init_early
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[olof: rebuilt branch due to drop of an early merge]
Signed-off-by: Olof Johansson <olof@lixom.net>
Add tclk as a fixed rate clock for all platforms. In addition, on
kirkwood, add a gated clock for most of the clocks which can be gated.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Jamie Lentin <jm@lentin.co.uk>
[mturquette@linaro.org: removed redundant CLKDEV_LOOKUP from Kconfig]
[mturquette@linaro.org: removed redundant clk.h from mach-dove/common.c]
Signed-off-by: Mike Turquette <mturquette@linaro.org>
When enable ARCH_SUSPEND_POSSIBLE, it need defintion of
cpu_mohawk_do_suspend and cpu_mohawk_do_resume
Signed-off-by: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Haojian Zhuang <<haojian.zhuang@gmail.com>
Merge irq-pxa168 and irq-mmp2. And support device tree also.
Since CONFIG_SPARSE_IRQ is enabled in arch-mmp, base irq starts from
NR_IRQS_LEGACY.
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
This does two things to the FPGA IRQ controller in the versatile
family:
- Convert to MULTI_IRQ_HANDLER so we can drop the entry macro
from the Integrator. The C IRQ handler was inspired from
arch/arm/common/vic.c, recent bug discovered in this handler was
accounted for.
- Convert to using IRQ domains so we can get rid of the NO_IRQ
mess and proceed with device tree and such stuff.
As part of the exercise, bump all the low IRQ numbers on the
Integrator PIC to start from 1 rather than 0, since IRQ 0 is
now NO_IRQ. The Linux IRQ numbers are thus entirely decoupled
from the hardware IRQ numbers in this controller.
I was unable to split this patch. The main reason is the half-done
conversion to device tree in Versatile.
Tested on Integrator/AP and Integrator/CP.
Cc: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add support for the A15 generic timer and clocksource.
As the timer generates interrupts on a different PPI depending
on the execution mode (normal or secure), it is possible to
register two different PPIs.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
In 3872c48b (tick: Document TICK_ONESHOT config option) Thomas describes
the circumstances under which TICK_ONESHOT should be selected. This is
an internal time keeping configuration symbol which should not be
selected by platform or arch code. So remove our select statements for
it.
This kills these warnings in OMAP builds:
kernel/time/tick-sched.c:47: warning: 'tick_do_update_jiffies64' defined but not used
kernel/time/tick-sched.c:89: warning: 'tick_init_jiffy_update' defined but not used
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Erratum #326103 ("FSR write bit incorrect on a SWP to read-only memory")
only affects the ARM 1136 core prior to r1p0. The workaround
disassembles the faulting instruction to determine whether it was a read
or write access on all v6 cores.
An issue has been reported on the ARM 11MPCore whereby loading the
faulting instruction may happen in parallel with that page being
unmapped, resulting in a deadlock due to the lack of TLB broadcasting
in hardware:
http://lists.infradead.org/pipermail/linux-arm-kernel/2012-March/091561.html
This patch limits the workaround so that it is only used on affected
cores, which are known to be UP only. Other v6 cores can rely on the
FSR to indicate the access type correctly.
Cc: stable@vger.kernel.org
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Nicolas Ferre <nicolas.ferre@atmel.com> writes:
First batch of AT91 cleanup for 3.5 kernel.
- The biggest improvement of this series is the ability to compile several
AT91 SoCs in one kernel image.
For now on it's limited to the DT-enabled boards but we can compile all
the core together.
- The Kconfig series is stacked before other patches as it is simple and
non-intrusive. Its goal is to remove too restrictive dependencies on
SoC names. This will allow to add support for newer SoC seamlessly.
- Some very "cosmetic" Kconfig changes are also added (entry names,
comments, etc.).
* tag 'at91-3.5-cleanup' of git://github.com/at91linux/linux-at91: (19 commits)
ARM: at91: add defconfig for device tree
ARM: at91/dt: do not specify the board any more
ARN: at91: introduce SOC_AT91xxx define to allow to compile SoC core support
ARM: at91: add SOC_AT91SAM9 kconfig option to factorise select
ARM: at91: pm select memory controler at runtime
ARM: at91: move at91_init_leds to board init
ARM: at91: do not pin mux the UARTs in init_early
ARM: at91: drop at91_set_serial_console
ARM: at91: uncompress: autodetect the uart to use
ARM: at91: uncompress Store UART address in a variable
hwrng: Kconfig: remove dependency for atmel-rng driver
Input: Kconfig: remove dependency for atmel_tsadcc driver
rtc: Kconfig: remove dependency for AT91 rtc driver
ARM: at91/Kconfig: website link for AT91SAM9G20-EK
ARM: at91/Kconfig: add AT91SAM9x5 family to AT91_EARLY_DBGU0 entry
ARM: at91/Kconfig: add clarifications to AT91SAM9M10G45-EK entry
ARM: at91/Kconfig: add comment to at91sam9x5 family entry
ARM: at91/Kconfig: change at91sam9g45 entry
ARM: at91: change AT91 Kconfig entry comment
Also updates the cleanup branch to v3.4-rc3.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
