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2017-11-14Merge tag 'irqchip-4.15-4' of ↵Thomas Gleixner1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent Pull irqchip updates for 4.15, take #4 from Marc Zyngier - A core irq fix for legacy cases where the irq trigger is not reported by firmware - A couple of GICv3/4 fixes (Kconfig, of-node refcount, error handling) - Trivial pr_err fixes
2017-11-13Merge branch 'irq-core-for-linus' of ↵Linus Torvalds1-0/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq core updates from Thomas Gleixner: "A rather large update for the interrupt core code and the irq chip drivers: - Add a new bitmap matrix allocator and supporting changes, which is used to replace the x86 vector allocator which comes with separate pull request. This allows to replace the convoluted nested loop allocation function in x86 with a facility which supports the recently added property of managed interrupts proper and allows to switch to a best effort vector reservation scheme, which addresses problems with vector exhaustion. - A large update to the ARM GIC-V3-ITS driver adding support for range selectors. - New interrupt controllers: - Meson and Meson8 GPIO - BCM7271 L2 - Socionext EXIU If you expected that this will stop at some point, I have to disappoint you. There are new ones posted already. Sigh! - STM32 interrupt controller support for new platforms. - A pile of fixes, cleanups and updates to the MIPS GIC driver - The usual small fixes, cleanups and updates all over the place. Most visible one is to move the irq chip drivers Kconfig switches into a separate Kconfig menu" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (70 commits) genirq: Fix type of shifting literal 1 in __setup_irq() irqdomain: Drop pointless NULL check in virq_debug_show_one genirq/proc: Return proper error code when irq_set_affinity() fails irq/work: Use llist_for_each_entry_safe irqchip: mips-gic: Print warning if inherited GIC base is used irqchip/mips-gic: Add pr_fmt and reword pr_* messages irqchip/stm32: Move the wakeup on interrupt mask irqchip/stm32: Fix initial values irqchip/stm32: Add stm32h7 support dt-bindings/interrupt-controllers: Add compatible string for stm32h7 irqchip/stm32: Add multi-bank management irqchip/stm32: Select GENERIC_IRQ_CHIP irqchip/exiu: Add support for Socionext Synquacer EXIU controller dt-bindings: Add description of Socionext EXIU interrupt controller irqchip/gic-v3-its: Fix VPE activate callback return value irqchip: mips-gic: Make IPI bitmaps static irqchip: mips-gic: Share register writes in gic_set_type() irqchip: mips-gic: Remove gic_vpes variable irqchip: mips-gic: Use num_possible_cpus() to reserve IPIs irqchip: mips-gic: Configure EIC when CPUs come online ...
2017-11-13Merge tag 'for-linus' of git://github.com/openrisc/linuxLinus Torvalds1-0/+1
Pull OpenRISC updates from Stafford Horne: "The OpenRISC work is a bit more interesting this time, adding SMP support and a few general cleanups. Small Things: - Move OpenRISC docs into Documentation and clean them up - Document previously undocumented devicetree bindings - Update the or1ksim dts to use stdout-path OpenRISC SMP support details: - First the "use shadow registers" and "define CPU_BIG_ENDIAN as true" get the architecture ready for SMP. - The "add 1 and 2 byte cmpxchg support" and "use qspinlocks and qrwlocks" add the SMP locking infrastructure as needed. Using the qspinlocks and qrwlocks as suggested by Peter Z while reviewing the original spinlocks implementation. - The "support for ompic" adds a new irqchip device which is used for IPI communication to support SMP. - The "initial SMP support" adds smp.c and makes changes to all of the necessary data-structures to be per-cpu. The remaining patches are bug fixes and debug helpers which I wanted to keep separate from the "initial SMP support" in order to allow them to be reviewed on their own. This includes: - add cacheflush support to fix icache aliasing - fix initial preempt state for secondary cpu tasks - sleep instead of spin on secondary wait - support framepointers and STACKTRACE_SUPPORT - enable LOCKDEP_SUPPORT and irqflags tracing - timer sync: Add tick timer sync logic - fix possible deadlock in timer sync, pointed out by mips guys Note: the irqchip patch was reviewed with Marc and we agreed to push it together with these patches" * tag 'for-linus' of git://github.com/openrisc/linux: openrisc: fix possible deadlock scenario during timer sync openrisc: pass endianness info to sparse openrisc: add tick timer multi-core sync logic openrisc: enable LOCKDEP_SUPPORT and irqflags tracing openrisc: support framepointers and STACKTRACE_SUPPORT openrisc: add simple_smp dts and defconfig for simulators openrisc: add cacheflush support to fix icache aliasing openrisc: sleep instead of spin on secondary wait openrisc: fix initial preempt state for secondary cpu tasks openrisc: initial SMP support irqchip: add initial support for ompic dt-bindings: add openrisc to vendor prefixes list openrisc: use qspinlocks and qrwlocks openrisc: add 1 and 2 byte cmpxchg support openrisc: use shadow registers to save regs on exception dt-bindings: openrisc: Add OpenRISC platform SoC Documentation: openrisc: Updates to README Documentation: Move OpenRISC docs out of arch/ MAINTAINERS: Add OpenRISC pic maintainer openrisc: dts: or1ksim: Add stdout-path
2017-11-13irqchip/gic-v3-its: Remove artificial dependency on PCIMarc Zyngier1-1/+2
The GICv3 ITS doesn't really depend on PCI. Only the PCI/MSI part of it does, and there is no reason not to blow away most of the irqchip stack because PCI is not selected (though not selecting PCI seem to be asking for punishment, but hey...). So let's split the PCI-specific part from the ITS in the Kconfig file, and let's make that part depend on PCI. Architecture specific hacks (arch/arm{,64}/Kconfig) will be addressed in a separate patch. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-11-07irqchip/exiu: Add support for Socionext Synquacer EXIU controllerArd Biesheuvel1-0/+1
The Socionext Synquacer SoC has an external interrupt unit (EXIU) that forwards a block of 32 configurable input lines to 32 adjacent level-high type GICv3 SPIs. The EXIU has per-interrupt level/edge and polarity controls, and mask bits that keep the outgoing lines de-asserted, even though the controller may still latch interrupt conditions that occur while the line is masked. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-11-03irqchip: add initial support for ompicStafford Horne1-0/+1
IPI driver for the Open Multi-Processor Interrupt Controller (ompic) as described in the Multi-core support section of the OpenRISC 1.2 architecture specification: https://github.com/openrisc/doc/raw/master/openrisc-arch-1.2-rev0.pdf Each OpenRISC core contains a full interrupt controller which is used in the SMP architecture for interrupt balancing. This IPI device, the ompic, is the only external device required for enabling SMP on OpenRISC. Pending ops are stored in a memory bit mask which can allow multiple pending operations to be set and serviced at a time. This is mostly borrowed from the alpha IPI implementation. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> [shorne@gmail.com: converted ops to bitmask, wrote commit message] Signed-off-by: Stafford Horne <shorne@gmail.com>
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman1-0/+1
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-19irqchip/meson: Add support for gpio interrupt controllerJerome Brunet1-0/+1
Add support for the interrupt gpio controller found on Amlogic's meson SoC family. This controller is a separate controller from the gpio controller. It is able to spy on the SoC pad. It is essentially a 256 to 8 router with a filtering block to select level or edge and polarity. The number of actual mappable inputs depends on the SoC. Cc: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-08-31irqchip/gic-v4: Enable low-level GICv4 operationsMarc Zyngier1-1/+1
Get the show on the road... Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-08-23irqchip: Add UniPhier AIDET irqchip driverMasahiro Yamada1-0/+1
UniPhier SoCs contain AIDET (ARM Interrupt Detector). This is intended to provide additional features that are not covered by GIC. The main purpose is to provide logic inverter to support low level and falling edge trigger types for interrupt lines from on-board devices. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-06-23irqchip/irq-mvebu-icu: Add new driver for Marvell ICUThomas Petazzoni1-0/+1
The Marvell ICU unit is found in the CP110 block of the Marvell Armada 7K and 8K SoCs. It collects the wired interrupts of the devices located in the CP110 and turns them into SPI interrupts in the GIC located in the AP806 side of the SoC, by using a memory transaction. Until now, the ICU was configured in a static fashion by the firmware, and Linux was relying on this static configuration. By having Linux configure the ICU, we are more flexible, and we can allocate dynamically the GIC SPI interrupts only for devices that are actually in use. The driver was initially written by Hanna Hawa <hannah@marvell.com>. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-06-23irqchip/irq-mvebu-gicp: Add new driver for Marvell GICPThomas Petazzoni1-0/+1
This commit adds a simple driver for the Marvell GICP, a hardware unit that converts memory writes into GIC SPI interrupts. The driver provides a number of functions to the ICU driver to allocate GICP interrupts, and get the physical addresses that the ICUs should write to to set/clear interrupts. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-06-22irqchip/aspeed-i2c-ic: Add I2C IRQ controller for AspeedBrendan Higgins1-1/+1
The Aspeed 24XX/25XX chips share a single hardware interrupt across 14 separate I2C busses. This adds a dummy irqchip which maps the single hardware interrupt to software interrupts for each of the busses. Signed-off-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-04-07irqchip: Add Mediatek mtk-cirq driverYoulin Pei1-1/+1
In Mediatek SOCs, the CIRQ is a low power interrupt controller designed to works outside MCUSYS which comprises with Cortex-Ax cores,CCI and GIC. The CIRQ controller is integrated in between MCUSYS( include Cortex-Ax, CCI and GIC ) and interrupt sources as the second level interrupt controller. The external interrupts which outside MCUSYS will feed through CIRQ then bypass to GIC. CIRQ can monitors all edge trigger interupts. When an edge interrupt is triggered, CIRQ can record the status and generate a pulse signal to GIC when flush command executed. When system enters sleep mode, MCUSYS will be turned off to improve power consumption, also GIC is power down. The edge trigger interrupts will be lost in this scenario without CIRQ. This commit provides the CIRQ irqchip implement. Signed-off-by: Youlin Pei <youlin.pei@mediatek.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-04-07irqchip/faraday: Replace moxa with ftintc010Linus Walleij1-1/+0
The Moxa Art interrupt controller is very very likely just an instance of the Faraday FTINTC010 interrupt controller from Faraday Technology. An indication would be its close association with the FA526 ARM core and the fact that the register layout is the same. The implementation in irq-moxart.c can probably be right off replaced with the irq-ftintc010.c driver by adding a compatible string, selecting this irqchip from the machine and run. As a bonus we have an irqchip driver supporting high/low and rising/falling edges for the Moxa Art, and shared code with the Gemini platform. Acked-by: Olof Johansson <olof@lixom.net> Tested-by: Jonas Jensen <jonas.jensen@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-04-07irqchip/gemini: Refactor Gemini driver to reflect Faraday originLinus Walleij1-1/+1
The Gemini irqchip turns out to be a standard IP component from Faraday Technology named FTINTC010 after some research and new information. - Rename the driver and all symbols to reflect the new information. - Add the new compatible string "faraday,ftintc010" - Create a Kconfig symbol CONFIG_FARADAY_FTINTC010 so that SoCs using this interrupt controller can easily select and reuse it instead of hardwiring it to ARCH_GEMINI I have created a separate patch to select the new Kconfig symbol from the Gemini machine, which will be merged through the ARM SoC tree. Cc: Greentime Hu <green.hu@gmail.com> Cc: Paulius Zaleckas <paulius.zaleckas@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-02-08irqchip: Add a driver for Cortina GeminiLinus Walleij1-0/+1
As a part of transitioning the Gemini platform to device tree we create this clean, device-tree-only irqchip driver. Cc: Janos Laube <janos.dev@gmail.com> Cc: Paulius Zaleckas <paulius.zaleckas@gmail.com> Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-02-03irqchip/qcom: Add IRQ combiner driverAgustin Vega-Frias1-0/+1
Driver for interrupt combiners in the Top-level Control and Status Registers (TCSR) hardware block in Qualcomm Technologies chips. An interrupt combiner in this block combines a set of interrupts by OR'ing the individual interrupt signals into a summary interrupt signal routed to a parent interrupt controller, and provides read- only, 32-bit registers to query the status of individual interrupts. The status bit for IRQ n is bit (n % 32) within register (n / 32) of the given combiner. Thus, each combiner can be described as a set of register offsets and the number of IRQs managed. Signed-off-by: Agustin Vega-Frias <agustinv@codeaurora.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-11-29microblaze/irqchip: Move intc driver to irqchipZubair Lutfullah Kakakhel1-0/+1
The Xilinx AXI Interrupt Controller IP block is used by the MIPS based xilfpga platform and a few PowerPC based platforms. Move the interrupt controller code out of arch/microblaze so that it can be used by everyone Tested-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-10-07Merge tag 'armsoc-cleanup' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC cleanups from Arnd Bergmann: "The cleanups for v4.9 are a little larger that usual, but thankfully that is almost exclusively due to removing a significant number of files that have become obsolete after the still ongoing conversion of old board files to devicetree. - for mach-omap2, which is still the largest platform in arch/arm/, the conversion to DT is finally complete after the Nokia N900 is now fully supported there, along with the omap3 LDP, and we can remove those two board files. If no regressions are found, another large cleanup for the platform will happen as a follow-up, removing dead code and restructuring the platform based on being DT-only. - In mach-imx, similar work is ongoing, but has not come that far. This time, we remove the obsolete board file for the i.MX1 generation, which like i.MX25, i.MX5, i.MX6, and i.MX7 is now DT-only. The remaining board files are for i.MX2 and i.MX3 machines based on old ARM926 or ARM1136 cores that should work with DT in principle. - realview has just been converted from board files to DT, and a lot of code gets removed in the process. This is the last ARM/Keil/Versatile derived platform that was still using board files, the other ones being integrator, versatile and vexpress. We can probably merge the remaining code into a single directory in the near future. - clps711x had completed the conversion in v4.8, but we accidentally left the files in place that should have been deleted then" * tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (21 commits) ARM: select PCI_DOMAINS config from ARCH_MULTIPLATFORM ARM: stop *MIGHT_HAVE_PCI* config from being selected redundantly ARM: imx: (trivial) fix typo and grammar ARM: clps711x: remove extraneous files ARM: imx: use IS_ENABLED() instead of checking for built-in or module ARM: OMAP2+: use IS_ENABLED() instead of checking for built-in or module ARM: OMAP1: use IS_ENABLED() instead of checking for built-in or module ARM: imx: remove platform-mxc_rnga ARM: realview: imply device tree boot ARM: realview: no need to select SMP_ON_UP explicitly ARM: realview: delete the RealView board files ARM: imx: no need to select SMP_ON_UP explicitly ARM: i.MX: Move SOC_IMX1 into 'Device tree only' ARM: i.MX: Remove i.MX1 non-DT support ARM: i.MX: Remove i.MX1 Synertronixx SCB9328 board support ARM: i.MX: Remove i.MX1 Armadeus APF9328 board support ARM: mxs: remove obsolete startup code for TX28 ARM: i.MX31 iomux: remove duplicates with alternate name ARM: i.MX31 iomux: remove plain duplicates ARM: OMAP2+: Drop legacy board file for LDP ...
2016-09-22Merge tag 'irqchip-core-4.9' of git://git.infradead.org/users/jcooper/linux ↵Thomas Gleixner1-0/+2
into irq/core Pull irqchip core changes for v4.9 from Jason Cooper - jcore: Add AIC driver - mips-gic: Use for_each_set_bit - mvebu: Add PIC driver
2016-09-21drivers/irqchip: Add STM32 external interrupts supportAlexandre TORGUE1-0/+1
The STM32 external interrupt controller consists of edge detectors that generate interrupts requests or wake-up events. Each line can be independently configured as interrupt or wake-up source, and triggers either on rising, falling or both edges. Each line can also be masked independently. Originally-from: Maxime Coquelin <mcoquelin.stm32@gmail.com> Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: Daniel Thompson <daniel.thompson@linaro.org> Cc: Jason Cooper <jason@lakedaemon.net> Cc: arnd@arndb.de Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: bruherrera@gmail.com Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org Cc: Rob Herring <robh+dt@kernel.org> Cc: lee.jones@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1474387259-18926-3-git-send-email-alexandre.torgue@st.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-08-23Merge branch 'irqchip/mvebu64' into irqchip/coreJason Cooper1-0/+1
2016-08-22irqchip/mvebu-pic: New driver for Marvell Armada 7K/8K PICThomas Petazzoni1-0/+1
The Marvell Armada 7K/8K integrates a secondary interrupt controller very originally named "PIC". It is connected to the main GIC via a PPI. Amongst other things, this PIC is used for the ARM PMU. This commit adds a simple irqchip driver for this interrupt controller. Since this interrupt controller is not needed early at boot time, we make the driver a proper platform driver rather than use the IRQCHIP_DECLARE() mechanism. Signed-off-by: Yehuda Yitschak <yehuday@marvell.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Link: https://lkml.kernel.org/r/1470408921-447-3-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-08-15ARM: realview: imply device tree bootLinus Walleij1-1/+1
This reduces the Kconfig for the RealView by assuming we are always booting from the device tree, and removing all the uses of CONFIG_REALVIEW_DT and replacing with CONFIG_ARCH_REALVIEW. Further: - Drop REALVIEW_HIGH_PHYS_OFFSET: we don't use this with device tree. - Drop the REALVIEW_EB_ARM11MP_REVB option: we now handle this by simply using another device tree. - Drop the PB1176 secure flash option: this is defined in the PB1176 device tree but marked as "disabled", so users who want to use it can simply enable it in the device tree and go hacking around. Cc: Brian Norris <computersforpeace@gmail.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-08-08irqchip/jcore-aic: Add J-Core AIC driverRich Felker1-0/+1
There are two versions of the J-Core interrupt controller in use, aic1 which generates interrupts with programmable priorities, but only supports 8 irq lines and maps them to cpu traps in the range 17 to 24, and aic2 which uses traps in the range 64-127 and supports up to 128 irqs, with priorities dependent on the interrupt number. The Linux driver does not make use of priorities anyway. For simplicity, there is no aic1-specific logic in the driver beyond setting the priority register, which is necessary for interrupts to work at all. Eventually aic1 will likely be phased out, but it's currently in use in deployments and all released bitstream binaries. Signed-off-by: Rich Felker <dalias@libc.org> Link: https://lkml.kernel.org/r/c3b89ef74aaa6477575dbe2d410eb1d182503243.147018b6529.git.dalias@libc.org Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-07-02Merge tag 'irqchip-core-4.8-2' of ↵Thomas Gleixner1-0/+1
git://git.infradead.org/users/jcooper/linux into irq/core Pull irqchip core changes for v4.8 (second set) from Jason Cooper: - Add Aspeed VIC driver
2016-06-22irqchip/aspeed-vic: Add irq controller for AspeedBenjamin Herrenschmidt1-0/+1
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Joel Stanley <joel@jms.id.au> Link: https://lkml.kernel.org/r/1463064193-2178-3-git-send-email-joel@jms.id.au Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-06-13irqchip/gic: Add platform driver for non-root GICs that require RPMJon Hunter1-0/+1
Add a platform driver to support non-root GICs that require runtime power-management. Currently, only non-root GICs are supported because the functions, smp_cross_call() and set_handle_irq(), that need to be called for a root controller are located in the __init section and so cannot be called by the platform driver. The GIC platform driver re-uses many functions from the existing GIC driver including some functions to save and restore the GIC context during power transitions. The functions for saving and restoring the GIC context are currently only defined if CONFIG_CPU_PM is enabled and to ensure that these functions are always defined when the platform driver is enabled, a dependency on CONFIG_ARM_GIC_PM (which selects the platform driver) has been added. In order to re-use the private GIC initialisation code, a new public function, gic_of_init_child(), has been added which calls various private functions to initialise the GIC. This is different from the existing gic_of_init() because it only supports non-root GICs (ie. does not call smp_cross_call() is set_handle_irq()) and is not located in the __init section (so can be used by platform drivers). Furthermore, gic_of_init_child() dynamically allocates memory for the GIC chip data which is also different from gic_of_init(). There is no specific suspend handling for GICs registered as platform devices. Non-wakeup interrupts will be disabled by the kernel during late suspend, however, this alone will not power down the GIC if interrupts have been requested and not freed. Therefore, requestors of non-wakeup interrupts will need to free them on entering suspend in order to power-down the GIC. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-05-19Merge tag 'arc-4.7-rc1' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC updates from Vineet Gupta: "We have a relatively big changeset for ARC for 4.7. The highlight is support for EZChip (now Mellanox) NPS-400 network processor, a 400-Gb throughput C-programmable packet processor based on ARC700 cores from Synopsys. See http://www.mellanox.com/related-docs/prod_npu/PB_NPS-400.pdf Also present are irqchip and clocksource drivers for NPS as agreed with respective maintainers to go via ARC tree due to an soc header dependency. I have the needed ACKs from Jason, Marc, Daniel. You might run into a trivial merge conflict in drivers/irqchip/* This EZChip platform support required some deep changes in ARC architecture code and also opportunity to cleanup past sins (legacy irq domains, missing irq domain lookup, hard coded timer irqs...) Summary: - Support for EZChip (now Mellanox) NPS-400 Network processor based on ARC700 - NPS interrupt controller and clocksource drivers - ARC timers probed off DT - ARC iqrchips switching to linear domain (upgrade from legacy domains)" * tag 'arc-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: (37 commits) arc: axs103_smp: Fix CPU frequency to 100MHz for dual-core arc: axs10x: Add DT bindings for I2S PLL Clock ARC: pae: STRICT_MM_TYPECHECKS was broken ARC: Add eznps platform to Kconfig and Makefile ARC: [plat-eznps] Use dedicated COMMAND_LINE_SIZE ARC: [plat-eznps] Use dedicated cpu_relax() ARC: [plat-eznps] Use dedicated identity auxiliary register. ARC: [plat-eznps] Use dedicated SMP barriers ARC: [plat-eznps] Use dedicated atomic/bitops/cmpxchg ARC: [plat-eznps] Use dedicated user stack top ARC: [plat-eznps] Add eznps platform ARC: [plat-eznps] Add eznps board defconfig and dts ARC: Mark secondary cpu online only after all HW setup is done ARC: rwlock: disable interrupts in !LLSC variant ARC: Make vmalloc size configurable ARC: clean out UAPI byteorder.h clean off Kconfig symbol irqchip: add nps Internal and external irqchips clocksource: Add NPS400 timers driver soc: Support for EZchip SoC Documentation: Add EZchip vendor to binding list ...
2016-05-11irqchip: Add LPC32xx interrupt controller driverVladimir Zapolskiy1-0/+1
The change adds improved support of NXP LPC32xx MIC, SIC1 and SIC2 interrupt controllers. This is a list of new features in comparison to the legacy driver: * irq types are taken from device tree settings, no more need to hardcode them, * old driver is based on irq_domain_add_legacy, which causes problems with handling MIC hardware interrupt 0 produced by SIC1, * there is one driver for MIC, SIC1 and SIC2, no more need to handle them separately, e.g. have two separate handlers for SIC1 and SIC2, * the driver does not have any dependencies on hardcoded register offsets, * the driver is much simpler for maintenance, * SPARSE_IRQS option is supported. Legacy LPC32xx interrupt controller driver was broken since commit 76ba59f8366f ("genirq: Add irq_domain-aware core IRQ handler"), which requires a private interrupt handler, otherwise any SIC1 generated interrupt (mapped to MIC hwirq 0) breaks the kernel with the message "unexpected IRQ trap at vector 00". The change disables compilation of a legacy driver found at arch/arm/mach-lpc32xx/irq.c, the file will be removed in a separate commit. Fixes: 76ba59f8366f ("genirq: Add irq_domain-aware core IRQ handler") Tested-by: Sylvain Lemieux <slemieux.tyco@gmail.com> Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-05-09irqchip: add nps Internal and external irqchipsNoam Camus1-0/+1
Adding EZchip NPS400 support. Internal interrupts are handled by Multi Thread Manager (MTM) Once interrupt is serviced MTM is acked for deactivating the interrupt. External interrupts are handled by MTM as well as at Global Interrupt Controller (GIC) e.g. serial and network devices. Signed-off-by: Noam Camus <noamc@ezchip.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Cc: Thomas Gleixner <tglx@linutronix.de>
2016-05-04irqchip: Add Layerscape SCFG MSI controller supportMinghuan Lian1-0/+1
Some kind of Freescale Layerscape SoC provides a MSI implementation which uses two SCFG registers MSIIR and MSIR to support 32 MSI interrupts for each PCIe controller. The patch is to support it. Signed-off-by: Minghuan Lian <Minghuan.Lian@nxp.com> Tested-by: Alexander Stein <alexander.stein@systec-electronic.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-05-02irqchip: Add per-cpu interrupt partitioning libraryMarc Zyngier1-0/+1
We've unfortunately started seeing a situation where percpu interrupts are partitioned in the system: one arbitrary set of CPUs has an interrupt connected to a type of device, while another disjoint set of CPUs has the same interrupt connected to another type of device. This makes it impossible to have a device driver requesting this interrupt using the current percpu-interrupt abstraction, as the same interrupt number is now potentially claimed by at least two drivers, and we forbid interrupt sharing on per-cpu interrupt. A solution to this is to turn things upside down. Let's assume that our system describes all the possible partitions for a given interrupt, and give each of them a unique identifier. It is then possible to create a namespace where the affinity identifier itself is a form of interrupt number. At this point, it becomes easy to implement a set of partitions as a cascaded irqchip, each affinity identifier being the HW irq. This allows us to keep a number of nice properties: - Each partition results in a separate percpu-interrupt (with a restrictied affinity), which keeps drivers happy. - Because the underlying interrupt is still per-cpu, the overhead of the indirection can be kept pretty minimal. - The core code can ignore most of that crap. For that purpose, we implement a small library that deals with some of the boilerplate code, relying on platform-specific drivers to provide a description of the affinity sets and a set of callbacks. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: Jason Cooper <jason@lakedaemon.net> Cc: Will Deacon <will.deacon@arm.com> Cc: Rob Herring <robh+dt@kernel.org> Link: http://lkml.kernel.org/r/1460365075-7316-4-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-03-09irqchip: Add the Alpine MSIX interrupt controllerAntoine Tenart1-0/+1
This patch adds the Alpine MSIX interrupt controller driver. Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Signed-off-by: Tsahee Zidenberg <tsahee@annapurnalabs.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-02-21Merge tag 'irqchip-core-4.6-2' of ↵Thomas Gleixner1-0/+4
git://git.infradead.org/users/jcooper/linux into irq/core Pull the second round of irqchip core changes for v4.6 from Jason Cooper: - mvebu: - Add odmi driver for Marvell 7K/8K SoCs - Replace driver-specific set_affinity with generic version - mips: - Move ath79 MISC and CPU drivers from arch/ code to irqchip/ - tango: - Add support for Sigma Designs SMP8[67]xx ctrl
2016-02-21Merge tag 'irqchip-core-4.6' of git://git.infradead.org/users/jcooper/linux ↵Thomas Gleixner1-1/+1
into irq/core Pull irqchip core changes for v4.6 from Jason Cooper: - mvebu (armada-370-xp) - MSI support - Deconflict with mvebu's arm64 code - ts4800 - Restrict when ts4800 driver can be built - Make ts4800_ic_ops static const - bcm2836: Drop superfluous memory barrier
2016-02-21Merge branch 'irqchip/mvebu' into irqchip/coreJason Cooper1-0/+1
2016-02-21Merge branch 'irqchip/mips' into irqchip/coreJason Cooper1-0/+2
2016-02-21Merge branch 'irqchip/tango' into irqchip/coreJason Cooper1-0/+1
2016-02-19irqchip/mvebu-odmi: Add new driver for platform MSI on Marvell 7K/8KThomas Petazzoni1-0/+1
This commits adds a new irqchip driver that handles the ODMI controller found on Marvell 7K/8K processors. The ODMI controller provide MSI interrupt functionality to on-board peripherals, much like the GIC-v2m. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1455888883-5127-1-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-18irqchip/tango: Add support for Sigma Designs SMP86xx/SMP87xx interrupt ↵Mans Rullgard1-0/+1
controller This adds support for the secondary interrupt controller used in Sigma Designs SMP86xx and SMP87xx chips. Signed-off-by: Mans Rullgard <mans@mansr.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1453313237-18570-2-git-send-email-mans@mansr.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-17irqchip/ath79-cpu: Move the CPU IRQ driver from arch/mips/ath79/Alban Bedel1-0/+1
Signed-off-by: Alban Bedel <albeu@free.fr> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1453553867-27003-2-git-send-email-albeu@free.fr Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-17irqchip/ath79-misc: Move the MISC driver from arch/mips/ath79/Alban Bedel1-0/+1
The driver stays the same but the initialization changes a bit. For OF boards we now get the memory map from the OF node and use a linear mapping instead of the legacy mapping. For legacy boards we still use a legacy mapping and just pass down all the parameters from the board init code. Signed-off-by: Alban Bedel <albeu@free.fr> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1453553867-27003-1-git-send-email-albeu@free.fr Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-16irqchip/armada-370-xp: Add Kconfig option for the driverThomas Petazzoni1-1/+1
Instead of building the irq-armada-370-xp driver directly when CONFIG_ARCH_MVEBU is enabled, this commit introduces an intermediate CONFIG_ARMADA_370_XP_IRQ hidden Kconfig option. This allows this option to select other interrupt-related Kconfig options (which will be needed in follow-up commits) rather than having such selects done from arch/arm/mach-<foo>/. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Link: https://lkml.kernel.org/r/1455115621-22846-2-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-08irqchips/bmips: Add bcm6345-l1 interrupt controllerSimon Arlott1-0/+1
Add the BCM6345 interrupt controller based on the SMP-capable BCM7038 and the BCM3380 but with packed interrupt registers. Add the BCM6345 interrupt controller to a list with the existing BCM7038 so that interrupts on CPU1 are not ignored. Update the maintainers file list for BMIPS to include this driver. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Pawel Moll <pawel.moll@arm.com> Cc: linux-mips@linux-mips.org Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Jonas Gorski <jogo@openwrt.org> Cc: Kumar Gala <galak@codeaurora.org> Cc: Rob Herring <robh@kernel.org> Link: http://lkml.kernel.org/r/5651D176.6030908@simon.arlott.org.uk Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-24Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds1-0/+1
Pull MIPS updates from Ralf Baechle: "This is the main pull request for MIPS for 4.5 plus some 4.4 fixes. The executive summary: - ATH79 platform improvments, use DT bindings for the ATH79 USB PHY. - Avoid useless rebuilds for zboot. - jz4780: Add NEMC, BCH and NAND device tree nodes - Initial support for the MicroChip's DT platform. As all the device drivers are missing this is still of limited use. - Some Loongson3 cleanups. - The unavoidable whitespace polishing. - Reduce clock skew when synchronizing the CPU cycle counters on CPU startup. - Add MIPS R6 fixes. - Lots of cleanups across arch/mips as fallout from KVM. - Lots of minor fixes and changes for IEEE 754-2008 support to the FPU emulator / fp-assist software. - Minor Ralink, BCM47xx and bcm963xx platform support improvments. - Support SMP on BCM63168" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (84 commits) MIPS: zboot: Add support for serial debug using the PROM MIPS: zboot: Avoid useless rebuilds MIPS: BMIPS: Enable ARCH_WANT_OPTIONAL_GPIOLIB MIPS: bcm63xx: nvram: Remove unused bcm63xx_nvram_get_psi_size() function MIPS: bcm963xx: Update bcm_tag field image_sequence MIPS: bcm963xx: Move extended flash address to bcm_tag header file MIPS: bcm963xx: Move Broadcom BCM963xx image tag data structure MIPS: bcm63xx: nvram: Use nvram structure definition from header file MIPS: bcm963xx: Add Broadcom BCM963xx board nvram data structure MAINTAINERS: Add KVM for MIPS entry MIPS: KVM: Add missing newline to kvm_err() MIPS: Move KVM specific opcodes into asm/inst.h MIPS: KVM: Use cacheops.h definitions MIPS: Break down cacheops.h definitions MIPS: Use EXCCODE_ constants with set_except_vector() MIPS: Update trap codes MIPS: Move Cause.ExcCode trap codes to mipsregs.h MIPS: KVM: Make kvm_mips_{init,exit}() static MIPS: KVM: Refactor added offsetof()s MIPS: KVM: Convert EXPORT_SYMBOL to _GPL ...
2016-01-24IRQCHIP: irq-pic32-evic: Add support for PIC32 interrupt controllerCristian Birsan1-0/+1
This adds support for the interrupt controller present on PIC32 class devices. It handles all internal and external interrupts. This controller exists outside of the CPU core and is the arbitrator of all interrupts (including interrupts from the CPU itself) before they are presented to the CPU. The following features are supported: - DT properties for EVIC and for devices/peripherals that use interrupt lines - Persistent and non-persistent interrupt handling - irqdomain and generic chip support - Configuration of external interrupt edge polarity Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com> Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/12092/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-12-29irqchip/ts4800: Add TS-4800 interrupt controllerDamien Riegel1-0/+1
This commit adds support for the TS-4800 interrupt controller. This controller is instantiated in a companion FPGA, and multiplex interrupts for other FPGA IPs. As this component is external to the SoC, the SoC might need to reserve pins, so this controller is implemented as a platform driver and doesn't use the IRQCHIP_DECLARE construct. Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: kernel@savoirfairelinux.com Link: http://lkml.kernel.org/r/1450728683-31416-2-git-send-email-damien.riegel@savoirfairelinux.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-12-19Merge branch 'irq/gic-4.5' of ↵Thomas Gleixner1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core Pull the GIC related updates from Marc Zyngier: "Not a lot this time (what a relief!), but an interesting series from Linus Walleij coming out of his work converting the ARM RealView platforms to DT, and a couple of mundane fixes."