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path: root/drivers/irqchip
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2016-03-11irqchip/irq-alpine-msi: Release the correct domain on errorDan Carpenter1-1/+1
The "msi_domain" variable is NULL here so it leads to a NULL dereference. It looks like we actually intended to free "middle_domain". Fixes: e6b78f2c3e14 ('irqchip: Add the Alpine MSIX interrupt controller') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Antoine Tenart <antoine.tenart@free-electrons.com> Cc: kernel-janitors@vger.kernel.org Cc: Tsahee Zidenberg <tsahee@annapurnalabs.com> Link: http://lkml.kernel.org/r/20160311081442.GE31887@mwanda Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-03-10irqchip/mxs: Fix error check of of_io_request_and_map()Vladimir Zapolskiy1-1/+1
The of_io_request_and_map() returns a valid pointer in iomem region or ERR_PTR(), check for NULL always fails and may cause a NULL pointer dereference on error path. Fixes: 25e34b44313b ("irqchip/mxs: Prepare driver for hardware with different offsets") Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Oleksij Rempel <linux@rempel-privat.de> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Shawn Guo <shawnguo@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1457486500-10237-1-git-send-email-vz@mleia.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-03-10irqchip/sunxi-nmi: Fix error check of of_io_request_and_map()Vladimir Zapolskiy1-2/+2
The of_io_request_and_map() returns a valid pointer in iomem region or ERR_PTR(), check for NULL always fails and may cause a NULL pointer dereference on error path. Fixes: 0e841b04c829 ("irqchip/sunxi-nmi: Switch to of_io_request_and_map() from of_iomap()") Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Chen-Yu Tsai <wens@csie.org> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1457486489-10189-1-git-send-email-vz@mleia.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-03-09irqchip/gic/realview: Support more RealView DCC variantsLinus Walleij1-6/+38
In the add-on file for the GIC dealing with the RealView family we currently only handle the PB11MPCore, let's extend this to manage the RealView EB ARM11MPCore as well. The Revision B of the ARM11MPCore core tile is a bit special and needs special handling as it moves a system control register around at random. Cc: Arnd Bergmann <arnd@arndb.de> Cc: devicetree@vger.kernel.org Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-03-09irqchip: Add the Alpine MSIX interrupt controllerAntoine Tenart3-0/+300
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>
2016-03-09irqchip/gic-v3: Always return IRQ_SET_MASK_OK_DONE in gic_set_affinityAntoine Tenart1-1/+1
Always return IRQ_SET_MASK_OK_DONE instead of IRQ_SET_MASK_OK when the affinity has been updated. When using stacked irqchips, returning IRQ_SET_MASK_OK_DONE means skipping all descendant irqchips. Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-03-09irqchip/gic-v3-its: Mark its_init() and its children as __initTomasz Nowicki1-3/+4
gicv3_init_bases() is the only caller for its_init(), also it is a __init function, so mark its_init() as __init too, then recursively mark the functions called as __init. This will help to introduce ITS initialization using ACPI tables as we will use acpi_table_parse_entries family functions there which belong to __init section as well. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Tomasz Nowicki <tn@semihalf.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-03-09irqchip/gic-v3: Remove gic_root_node variable from the ITS codeHanjun Guo1-3/+0
The gic_root_node variable defined in ITS driver is not actually used, so just remove it. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-03-09irqchip/gic-v3: ACPI: Add redistributor support via GICC structuresTomasz Nowicki1-13/+101
Following ACPI spec: On systems supporting GICv3 and above, GICR Base Address in MADT GICC structure holds the 64-bit physical address of the associated Redistributor. If all of the GIC Redistributors are in the always-on power domain, GICR structures should be used to describe the Redistributors instead, and this field must be set to 0. It means that we have two ways to initialize registirbutors map. 1. via GICD structure which can accommodate many redistributors as a region 2. via GICC which is able to describe single redistributor This patch is going to add support for second option. Considering redistributors, GICD and GICC subtables have be mutually exclusive. While discovering and mapping redistributor, we need to know its size in advance. For the GICC case, redistributor can be in a power-domain that is off, thus we cannot relay on GICR TYPER register. Therefore, we get GIC version from distributor register and map 2xSZ_64K for GICv3 and 4xSZ_64K for GICv4. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Tomasz Nowicki <tn@semihalf.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-03-09irqchip/gic-v3: Add ACPI support for GICv3/4 initializationTomasz Nowicki1-0/+137
With the refator of gic_of_init(), GICv3/4 can be initialized by gic_init_bases() with gic distributor base address and gic redistributor region(s). So get the redistributor region base addresses from MADT GIC redistributor subtable, and the distributor base address from GICD subtable to init GICv3 irqchip in ACPI way. Note: GIC redistributor base address may also be provided in GICC structures on systems supporting GICv3 and above if the GIC Redistributors are not in the always-on power domain, this patch didn't implement such feature yet. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Tomasz Nowicki <tn@semihalf.com> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-03-09irqchip/gic-v3: Refactor gic_of_init() for GICv3 driverTomasz Nowicki1-52/+78
Isolate hardware abstraction (FDT) code to gic_of_init(). Rest of the logic goes to gic_init_bases() and expects well defined data to initialize GIC properly. The same solution is used for GICv2 driver. This is needed for ACPI initialization later. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-03-08Merge branch 'linus' into irq/core, to pick up fixesIngo Molnar3-25/+24
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-25irqchip/mips-gic: Add new DT property to reserve IPIsQais Yousef1-2/+10
The new property will allow to specify the range of GIC hwirqs to use for IPIs. This is an optinal property. We preserve the previous behaviour of allocating the last 2 * gic_vpes if it's not specified or DT is not supported. Signed-off-by: Qais Yousef <qais.yousef@imgtec.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: <jason@lakedaemon.net> Cc: <marc.zyngier@arm.com> Cc: <jiang.liu@linux.intel.com> Cc: <linux-mips@linux-mips.org> Cc: <lisa.parratt@imgtec.com> Cc: Qais Yousef <qsyousef@gmail.com> Link: http://lkml.kernel.org/r/1449580830-23652-20-git-send-email-qais.yousef@imgtec.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-02-25MIPS: Make smp CMP, CPS and MT use the new generic IPI functionsQais Yousef2-81/+6
This commit does several things to avoid breaking bisectability. 1- Remove IPI init code from irqchip/mips-gic 2- Implement the new irqchip->send_ipi() in irqchip/mips-gic 3- Select GENERIC_IRQ_IPI Kconfig symbol for MIPS_GIC 4- Change MIPS SMP to use the generic IPI implementation Only the SMP variants that use GIC were converted as it's the only irqchip that will have the support for generic IPI for now. Signed-off-by: Qais Yousef <qais.yousef@imgtec.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: <jason@lakedaemon.net> Cc: <marc.zyngier@arm.com> Cc: <jiang.liu@linux.intel.com> Cc: <linux-mips@linux-mips.org> Cc: <lisa.parratt@imgtec.com> Cc: Qais Yousef <qsyousef@gmail.com> Link: http://lkml.kernel.org/r/1449580830-23652-18-git-send-email-qais.yousef@imgtec.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-02-25irqchip/mips-gic: Clear percpu_masks correctly when mappingQais Yousef1-0/+3
When setting the mapping for a hwirq, make sure we clear percpu_masks for all other cpus in case it was set previously. Signed-off-by: Qais Yousef <qais.yousef@imgtec.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: <jason@lakedaemon.net> Cc: <marc.zyngier@arm.com> Cc: <jiang.liu@linux.intel.com> Cc: <linux-mips@linux-mips.org> Cc: <lisa.parratt@imgtec.com> Cc: Qais Yousef <qsyousef@gmail.com> Link: http://lkml.kernel.org/r/1449580830-23652-16-git-send-email-qais.yousef@imgtec.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-02-25irqchip/mips-gic: Use gic_vpes instead of NR_CPUSQais Yousef1-3/+3
NR_CPUS is set by Kconfig and could be much higher than what actually is in the system. gic_vpes should be a true representitives of the number of cpus in the system, so use it instead. Signed-off-by: Qais Yousef <qais.yousef@imgtec.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: <jason@lakedaemon.net> Cc: <marc.zyngier@arm.com> Cc: <jiang.liu@linux.intel.com> Cc: <linux-mips@linux-mips.org> Cc: <lisa.parratt@imgtec.com> Cc: Qais Yousef <qsyousef@gmail.com> Link: http://lkml.kernel.org/r/1449580830-23652-15-git-send-email-qais.yousef@imgtec.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-02-25irqchip/mips-gic: Add device hierarchy domainQais Yousef1-20/+83
Now the root gic_irq_domain is split into device and IPI domains. This form provides a better representation of how the root domain is split into 2. One for devices and one for IPIs. Signed-off-by: Qais Yousef <qais.yousef@imgtec.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: <jason@lakedaemon.net> Cc: <marc.zyngier@arm.com> Cc: <jiang.liu@linux.intel.com> Cc: <linux-mips@linux-mips.org> Cc: <lisa.parratt@imgtec.com> Cc: Qais Yousef <qsyousef@gmail.com> Link: http://lkml.kernel.org/r/1449580830-23652-14-git-send-email-qais.yousef@imgtec.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-02-25irqchip/mips-gic: Add a IPI hierarchy domainQais Yousef2-5/+180
Add a new ipi domain on top of the normal domain. MIPS GIC now supports dynamic allocation of an IPI. Signed-off-by: Qais Yousef <qais.yousef@imgtec.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: <jason@lakedaemon.net> Cc: <marc.zyngier@arm.com> Cc: <jiang.liu@linux.intel.com> Cc: <linux-mips@linux-mips.org> Cc: <lisa.parratt@imgtec.com> Cc: Qais Yousef <qsyousef@gmail.com> Link: http://lkml.kernel.org/r/1449580830-23652-13-git-send-email-qais.yousef@imgtec.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-02-21Merge tag 'irqchip-core-4.6-2' of ↵Thomas Gleixner8-14/+769
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 Gleixner5-93/+74
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 Cooper5-14/+243
2016-02-21Merge branch 'irqchip/mips' into irqchip/coreJason Cooper3-0/+288
2016-02-21Merge branch 'irqchip/tango' into irqchip/coreJason Cooper3-0/+238
2016-02-19irqchip/gic: Return IRQ_SET_MASK_OK_DONE in the set_affinity methodMarc Zyngier3-27/+3
Moving an SPI around doesn't require any extra work from the rest of the stack, and specially not for MSI-generated SPIs. It is then worth returning IRQ_SET_MASK_OK_DONE instead of IRQ_SET_MASK_OK, and simplify the other irqchips that rely on this behaviour (GICv2m and Marvell's ODMI controller). Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Link: https://lkml.kernel.org/r/1455894029-17270-1-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-19irqchip/mvebu-odmi: Add new driver for platform MSI on Marvell 7K/8KThomas Petazzoni3-0/+253
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/ts4800: Make ts4800_ic_ops static constAxel Lin1-1/+1
ts4800_ic_ops is only referenced in this driver, so make it static. In additional, it's never get modified thus also make it const. Signed-off-by: Axel Lin <axel.lin@ingics.com> Reviewed-by: Damien Riegel <damien.riegel@savoirfairelinux.com> Link: https://lkml.kernel.org/r/1455457804.13175.1.camel@ingics.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-18irqchip/bcm2836: Drop extra memory barrier in SMP boot.Eric Anholt1-1/+0
The writel() immediately after this has a barrier, anyway. Signed-off-by: Eric Anholt <eric@anholt.net> Link: https://lkml.kernel.org/r/1454620468-31303-1-git-send-email-eric@anholt.net Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-18irqchip/ts4800: Add hardware dependencyJean Delvare1-0/+1
The Technologic Systems TS-4800 is an i.MX515 board, so its drivers are useless unless building a SOC_IMX51 kernel, except for build testing purposes. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Damien Riegel <damien.riegel@savoirfairelinux.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/20160209111920.1ec318bd@endymion Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-18irqchip/tango: Add support for Sigma Designs SMP86xx/SMP87xx interrupt ↵Mans Rullgard3-0/+238
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/gicv3-its: Avoid cache flush beyond ITS_BASERn memory sizeShanker Donthineni1-5/+6
Function its_alloc_tables() maintains two local variables, "order" and and "alloc_size", to hold memory size that has been allocated to ITS_BASEn. We don't always refresh the variable alloc_size whenever value of the variable order changes, causing the following two problems. - Cache flush operation with size more than required. - Information reported by pr_info is not correct. Use a helper macro that converts page order to size in bytes instead of variable "alloc_size" to fix both the problems. Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-02-17irqchip/ath79-cpu: Move the CPU IRQ driver from arch/mips/ath79/Alban Bedel2-0/+98
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 Bedel2-0/+190
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: Do not enable it by default when ARCH_MVEBU is selectedGregory CLEMENT1-1/+0
The irq-armada-370-xp driver can only be built for ARM 32 bits. The mvebu family had grown with a new ARM64 SoC which will also select the ARCH_MEVBU configuration. Since "ARM: mvebu: use the ARMADA_370_XP_IRQ option", the ARM32 mvebu SoC directly select this new option. Selecting it by default when ARCH_MEVBU is selected is no more needed. This patch removes this dependency, thanks to this, a kernel for ARM64 mvebu SoC can be built without error due this driver. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Link: https://lkml.kernel.org/r/1454951660-13289-3-git-send-email-gregory.clement@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-16irqchip/armada-370-xp: Allow allocation of multiple MSIsThomas Petazzoni1-11/+14
Add support for allocating multiple MSIs at the same time, so that the MSI_FLAG_MULTI_PCI_MSI flag can be added to the msi_domain_info structure. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Link: https://lkml.kernel.org/r/1455115621-22846-6-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-16irqchip/armada-370-xp: Use shorter names for irq_chipThomas Petazzoni1-3/+3
In order to make the output of /proc/interrupts, use shorter names for the irq_chip registered by the irq-armada-370-xp driver. Using capital letters also matches better what is done for the GIC driver, which uses just "GIC" as the irq_chip->name. 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/1455115621-22846-5-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-16irqchip/armada-370-xp: Use PCI_MSI_DOORBELL_START where appropriateThomas Petazzoni1-2/+2
As suggested by Gregory Clement, this commit adjusts the irq-armada-370-xp driver to use the PCI_MSI_DOORBELL_START define in the armada_370_xp_handle_msi_irq() function, rather than hardcoding its value. Suggested-by: Gregory CLEMENT <gregory.clement@free-electrons.com> 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/1455115621-22846-4-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-16irqchip/armada-370-xp: Use the generic MSI infrastructureThomas Petazzoni2-88/+62
This commit moves the irq-armada-370-xp driver from using the PCI-specific MSI infrastructure to the generic MSI infrastructure, to which drivers are progressively converted. In this hardware, the MSI controller is directly bundled inside the interrupt controller, so we have a single Device Tree node to which multiple IRQ domaines are attached: the wired interrupt domain and the MSI interrupt domain. In order to ensure that they can be differentiated, we have to force the bus_token of the wired interrupt domain to be DOMAIN_BUS_WIRED. The MSI domain bus_token is automatically set to the appropriate value by pci_msi_create_irq_domain(). Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Suggested-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1455115621-22846-3-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2016-02-16irqchip/armada-370-xp: Add Kconfig option for the driverThomas Petazzoni2-1/+6
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>
2016-02-11irqchip/gic-v3-its: Fix double ICC_EOIR write for LPI in EOImode==1Ashok Kumar1-6/+1
When the GIC is using EOImode==1, the EOI is done immediately, leaving the deactivation to be performed when the EOI was previously done. Unfortunately, the ITS is not aware of the EOImode at all, and blindly EOIs the interrupt again. On most systems, this is ignored (despite being a programming error), but some others do raise a SError exception as there is no priority drop to perform for this interrupt. The fix is to stop trying to be clever, and always call into the underlying GIC to perform the right access, irrespective of the more we're in. [Marc: Reworked commit message] Fixes: 0b996fd35957a ("irqchip/GICv3: Convert to EOImode == 1") Cc: stable@vger.kernel.org Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Ashok Kumar <ashoks@broadcom.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-02-11irqchip/gic: Only set the EOImodeNS bit for the root controllerJon Hunter1-1/+1
EOImode1 is only used for the root controller and hence only the root controller uses the eoimode1 functions for handling interrupts. However, if the root controller supports EOImode1, then the EOImodeNS bit will be set for all GICs, enabling EOImode1. This is not what we want and this causes interrupts on non-root GICs to only be dropped in priority but never deactivated. Therefore, only set the EOImodeNS bit for the root controller. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-02-11irqchip/gic: Only populate set_affinity for the root controllerJon Hunter1-6/+5
Setting the affinity of an IRQ, it only applicable for the root interrupt controller and so only populate this operator for the root controller. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-02-08irqchips/bmips: Add bcm6345-l1 interrupt controllerSimon Arlott3-0/+370
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>
2016-02-08irqchip/atmel-aic: Remove duplicate bit operationMilo Kim1-1/+1
AIC5 priority value is updated twice - in aic_common_set_priority() and when updating AT91_AIC5_SMR. Variable, 'smr' has updated priority value (intspec[2]) in the first step, so no need to update it again in the second step. Signed-off-by: Milo Kim <milo.kim@ti.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Ludovic Desroches <ludovic.desroches@atmel.com> Cc: Nicholas Ferre <nicolas.ferre@atmel.com> Link: http://lkml.kernel.org/r/1452669592-3401-4-git-send-email-milo.kim@ti.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-02-08irqchip/atmel-aic: Change return type of aic_common_set_priority()Milo Kim4-14/+6
Priority validation is not necessary because aic_common_irq_domain_xlate() already handles it. With this removal, return type can be changed to void. Signed-off-by: Milo Kim <milo.kim@ti.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Ludovic Desroches <ludovic.desroches@atmel.com> Cc: Nicholas Ferre <nicolas.ferre@atmel.com> Link: http://lkml.kernel.org/r/1452669592-3401-3-git-send-email-milo.kim@ti.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-02-08irqchip/atmel-aic: Handle aic_common_irq_fixup in aic_common_of_initMilo Kim4-11/+8
AIC IRQ fixup is handled in each IRQ chip driver. It can be moved into aic_common_of_init() before returning the result. Then, aic_common_irq_fixup() can be changed to static type. Signed-off-by: Milo Kim <milo.kim@ti.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Ludovic Desroches <ludovic.desroches@atmel.com> Cc: Nicholas Ferre <nicolas.ferre@atmel.com> Link: http://lkml.kernel.org/r/1452669592-3401-1-git-send-email-milo.kim@ti.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-02-04irqchip/gicv3-its: Fix memory leak in its_free_tables()Shanker Donthineni1-6/+11
The current ITS driver has a memory leak in its_free_tables(). It happens on tear down path of the driver when its_probe() call fails. its_free_tables() should free the exact number of pages that have been allocated, not just a single page as current code does. This patch records the memory size for each ITS_BASERn at the time of page allocation and uses the same size information when freeing pages to fix the issue. Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Vikram Sethi <vikrams@codeaurora.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1454379584-21772-1-git-send-email-shankerd@codeaurora.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-02-02irqchip/sun4i: Fix compilation outside of arch/armAndre Przywara1-1/+0
The Allwinner sunxi specific interrupt controller cannot be compiled for any architecture except arm: drivers/irqchip/irq-sun4i.c:25:26: fatal error: asm/mach/irq.h: No such file or directory compilation terminated. It turns out that this header is actually not needed for the driver, so remove it and allow compilation for other architectures like arm64. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: linux-arm-kernel@lists.infradead.org Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Chen-Yu Tsai <wens@csie.org> Cc: linux-sunxi@googlegroups.com Link: http://lkml.kernel.org/r/1454348370-3816-2-git-send-email-andre.przywara@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-31Merge branch 'irq-urgent-for-linus' of ↵Linus Torvalds5-4/+10
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull IRQ fixes from Ingo Molnar: "Mostly irqchip driver fixes, but also an irq core crash fix and a build fix" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/mxs: Add missing set_handle_irq() irqchip/atmel-aic: Fix wrong bit operation for IRQ priority irqchip/gic-v3-its: Recompute the number of pages on page size change base: Export platform_msi_domain_[alloc,free]_irqs of: MSI: Simplify irqdomain lookup irqdomain: Allow domain lookup with DOMAIN_BUS_WIRED token irqchip: Fix dependencies for archs w/o HAS_IOMEM irqchip/s3c24xx: Mark init_eint as __maybe_unused genirq: Validate action before dereferencing it in handle_irq_event_percpu()
2016-01-29irqchip/mxs: Add missing set_handle_irq()Oleksij Rempel1-0/+1
The rework of the driver missed to move the call to set_handle_irq() into asm9260_of_init(). As a consequence no interrupt entry point is installed and no interrupts are delivered Solution is simple: Install the interrupt entry handler. Fixes: 7e4ac676ee ("irqchip/mxs: Add Alphascale ASM9260 support") Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Cc: kernel@pengutronix.de Cc: jason@lakedaemon.net Cc: marc.zyngier@arm.com Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1454061473-24957-1-git-send-email-linux@rempel-privat.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-27irqchip/atmel-aic: Fix wrong bit operation for IRQ priorityMilo Kim1-1/+1
Atmel AIC has common structure for SMR (Source Mode Register). bit[6:5] Interrupt source type bit[2:0] Priority level Other bits are unused. To update new priority value, bit[2:0] should be cleared first and then new priority level can be written. However, aic_common_set_priority() helper clears source type bits instead of priority bits. This patch fixes wrong mask bit operation. Fixes: b1479ebb7720 "irqchip: atmel-aic: Add atmel AIC/AIC5 drivers" Signed-off-by: Milo Kim <milo.kim@ti.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Ludovic Desroches <ludovic.desroches@atmel.com> Cc: Nicholas Ferre <nicolas.ferre@atmel.com> Cc: stable@vger.kernel.org #v3.17+ Link: http://lkml.kernel.org/r/1452669592-3401-2-git-send-email-milo.kim@ti.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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