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path: root/arch/mips/ath79/irq.c
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2016-01-04MIPS: ath79: Prepare moving the MISC driver to drivers/irqchipAlban Bedel
To prepare moving out of the arch directory rework the MISC implementation to use irq domains instead of hard coded IRQ numbers. Also remove the uses of the ath79_reset_base global pointer in the IRQ methods. Signed-off-by: Alban Bedel <albeu@free.fr> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Alexander Couzens <lynxis@fe80.eu> Cc: Joel Porquet <joel@porquet.org> Cc: Andrew Bresticker <abrestic@chromium.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11506/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-04MIPS: ath79: Remove useless #ifdef CONFIG_IRQCHIPAlban Bedel
IRQCHIP is always enabled, so the #ifdef can just be removed. Signed-off-by: Alban Bedel <albeu@free.fr> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Alexander Couzens <lynxis@fe80.eu> Cc: Joel Porquet <joel@porquet.org> Cc: Andrew Bresticker <abrestic@chromium.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11504/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-09-22MIPS: ATH79: Add irq chip ar7240-misc-intcAlexander Couzens
The ar7240 misc irq chip use ack handler instead of ack_mask handler. All new ath79 chips use the ar7240 misc irq chip Signed-off-by: Alexander Couzens <lynxis@fe80.eu> Acked-by: Alban Bedel <albeu@free.fr> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mips@linux-mips.org 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: devicetree@vger.kernel.org Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11164/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-09-22MIPS: ATH79: Set missing irq ack handler for ar7100-misc-intc irq chipAlexander Couzens
The irq ack handler was forgotten while introducing OF support. Only ar71xx and ar933x based devices require it. Signed-off-by: Alexander Couzens <lynxis@fe80.eu> Acked-by: Alban Bedel <albeu@free.fr> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mips@linux-mips.org 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: devicetree@vger.kernel.org Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11163/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-09-16genirq: Remove irq argument from irq flow handlersThomas Gleixner
Most interrupt flow handlers do not use the irq argument. Those few which use it can retrieve the irq number from the irq descriptor. Remove the argument. Search and replace was done with coccinelle and some extra helper scripts around it. Thanks to Julia for her help! Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com>
2015-08-26MIPS: ath91: Remove pointless irqdisable/enableThomas Gleixner
The various interrupt flow handlers in ath79 are cascading interrupt handlers. They all have a disable_irq_nosync()/enable_irq() pair around the generic_handle_irq() call. The value of this disable/enable is zero because its a complete noop: disable_irq_nosync() merily increments the disable count without actually masking the interrupt. enable_irq() soleley decrements the disable count without touching the interrupt chip. The interrupt cannot arrive again because the complete call chain runs with interrupts disabled. Remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mips@linux-mips.org Cc: LKML <linux-kernel@vger.kernel.org> Cc: Jiang Liu <jiang.liu@linux.intel.com> Patchwork: https://patchwork.linux-mips.org/patch/10703/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-08-26MIPS: ath79: irq: IRQCHIP_DECLARE moved to linux/irqchip.hAlban Bedel
Remove the ugly cross tree include now that IRQCHIP_DECLARE moved to linux/irqchip.h. Signed-off-by: Alban Bedel <albeu@free.fr> Cc: linux-mips@linux-mips.org Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Bresticker <abrestic@chromium.org> Cc: Qais Yousef <qais.yousef@imgtec.com> Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/10633/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21MIPS: ath79: Add OF support to the IRQ controllersAlban Bedel
Add OF support for the CPU and MISC interrupt controllers of most supported ATH79 devices. Signed-off-by: Alban Bedel <albeu@free.fr> Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21MIPS: ath79: Improve the DDR controller interfaceAlban Bedel
The DDR controller need to be used by the IRQ controller to flush the write buffer of some devices before running the IRQ handler. It is also used by the PCI controller to setup the PCI memory windows. The current interface used to access the DDR controller doesn't provides any useful abstraction and simply rely on a shared global pointer. Replace this by a simple API to setup the PCI memory windows and use the write buffer flush independently of the SoC type. That remove the need for the shared global pointer, simplify the IRQ handler code. [ralf@linux-mips.org: Folded in Alban Bedel's follup fix.] Signed-off-by: Alban Bedel <albeu@free.fr> Cc: linux-mips@linux-mips.org Cc: Andrew Bresticker <abrestic@chromium.org> Cc: Qais Yousef <qais.yousef@imgtec.com> Cc: Wolfram Sang <wsa@the-dreams.de> Cc: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Gabor Juhos <juhosg@openwrt.org> Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/9773/ Patchwork: http://patchwork.linux-mips.org/patch/10543/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24MIPS: Add hook to get C0 performance counter interruptAndrew Bresticker
The hardware perf event driver and oprofile interpret the global cp0_perfcount_irq differently: in the hardware perf event driver it is an offset from MIPS_CPU_IRQ_BASE and in oprofile it is the actual IRQ number. This still works most of the time since MIPS_CPU_IRQ_BASE is usually 0, but is clearly wrong. Since the performance counter interrupt may vary from platform to platform like the C0 timer interrupt, add the optional get_c0_perfcount_int hook which returns the IRQ number of the performance counter. The hook should return < 0 if the performance counter interrupt is shared with the timer. If the hook is not present, the CPU vector reported in C0_IntCtl (cp0_perfcount_irq) is used. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Qais Yousef <qais.yousef@imgtec.com> Tested-by: Qais Yousef <qais.yousef@imgtec.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Andrew Bresticker <abrestic@chromium.org> Cc: Jeffrey Deans <jeffrey.deans@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Qais Yousef <qais.yousef@imgtec.com> Cc: Jonas Gorski <jogo@openwrt.org> Cc: John Crispin <blogic@openwrt.org> Cc: David Daney <ddaney.cavm@gmail.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/7805/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-02-19MIPS: ath79: add IRQ handling code for the QCA955X SoCsGabor Juhos
The IRQ routing in the QCA955x SoCs is slightly different from the routing implemented in the already supported SoCs. Cc: Rodriguez, Luis <rodrigue@qca.qualcomm.com> Cc: Giori, Kathy <kgiori@qca.qualcomm.com> Cc: QCA Linux Team <qca-linux-team@qca.qualcomm.com> Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/4955/ Signed-off-by: John Crispin <blogic@openwrt.org>
2013-02-17ath79: remove ATH79_MISC_IRQ_* definesGabor Juhos
Use the ATH79_MISC_IRQ() macro instead. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/4930/ Signed-off-by: John Crispin <blogic@openwrt.org>
2013-02-17ath79: add ATH79_CPU_IRQ() macroGabor Juhos
Remove the individual ATH79_CPU_IRQ_* constants and use the new macro instead of those. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/4929/ Signed-off-by: John Crispin <blogic@openwrt.org>
2013-02-17MIPS: ath79: simplify MISC IRQ handlingGabor Juhos
The current code uses multiple if statements for demultiplexing the different interrupt sources. Additionally, the MISC interrupt controller has 32 interrupt sources and the current code does not handles all of them. Get rid of the if statements and process all interrupt sources in a loop to fix these issues. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/4874/ Signed-off-by: John Crispin <blogic@openwrt.org>
2012-05-15MIPS: ath79: add IRQ handling code for AR934XGabor Juhos
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com> Cc: linux-mips@linux-mips.org Cc: mcgrof@infradead.org Patchwork: https://patchwork.linux-mips.org/patch/3510/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-05-15MIPS: ath79: rework IP2/IP3 interrupt handlingGabor Juhos
The current implementation assumes that flushing the DDR writeback buffer is required for IP2/IP3 interrupts, however this is not true for all SoCs. Use SoC specific IP2/IP3 handlers instead of flushing the buffers in the dispatcher code. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com> Cc: linux-mips@linux-mips.org Cc: mcgrof@infradead.org Patchwork: https://patchwork.linux-mips.org/patch/3509/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07MIPS: ath79: Add AR933X specific IRQ initializationGabor Juhos
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Cc: Kathy Giori <kgiori@qca.qualcomm.com> Cc: "Luis R. Rodriguez" <rodrigue@qca.qualcomm.com> Patchwork: https://patchwork.linux-mips.org/patch/2530/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07MIPS: ath79: Handle more MISC IRQsGabor Juhos
The AR724X SoCs have more IRQ sources hooked into the MISC IRQ controller. The patch adds support for them. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2440/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-03-29MIPS: Convert the irq functions to the new namesThomas Gleixner
Scripted with coccinelle. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-03-25MIPS: ath79: Convert to new irq_chip functionsThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2175/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-03-25MIPS: Remove useless initialization.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-01-18MIPS: Add initial support for the Atheros AR71XX/AR724X/AR931X SoCsGabor Juhos
This patch adds initial support for various Atheros SoCs based on the MIPS 24Kc core. The following models are supported at the moment: - AR7130 - AR7141 - AR7161 - AR9130 - AR9132 - AR7240 - AR7241 - AR7242 The current patch contains minimal support only, but the resulting kernel can boot into user-space with using of an initramfs image on various boards which are using these SoCs. Support for more built-in devices and individual boards will be implemented in further patches. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Imre Kaloz <kaloz@openwrt.org> Cc: linux-mips@linux-mips.org Cc: Luis R. Rodriguez <lrodriguez@atheros.com> Cc: Cliff Holden <Cliff.Holden@Atheros.com> Cc: Kathy Giori <Kathy.Giori@Atheros.com> Patchwork: https://patchwork.linux-mips.org/patch/1947/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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