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ccd9432a5c
linux/drivers/irqchip
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Sudeep Holla ccd9432a5c irqchip/gicv3: Remove disabling redistributor and group1 non-secure interrupts 
As per the GICv3 specification, to power down a processor using GICv3
and allow automatic power-on if an interrupt must be sent to a processor,
software must set Enable to zero for all interrupt groups(by writing
to GICC_CTLR or ICC_IGRPEN{0,1}_EL1/3 as appropriate.

When commit 3708d52fc6 ("irqchip: gic-v3: Implement CPU PM notifier")
was introduced there were no firmware implementations(in particular PSCI)
handling this.

Linux kernel may not be aware of the CPU power state details and might
fail to identify the power states that require quiescing the CPU
interface. Even if it can be aware of those details, it can't determine
which CPU power state have been triggered at the platform level and how
the power control is implemented.

This patch make disabling redistributor and group1 non-secure interrupts
in the power down path and re-enabling of redistributor in the power-up
path conditional. It will be handled in the kernel if and only if the
non-secure accesses are permitted to access and modify control registers.
It is left to the platform implementation otherwise.

Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Tested-by: Christopher Covington <cov@codeaurora.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-08-17 18:33:07 +01:00
..
alphascale_asm9260-icoll.h irqchip/mxs: Add Alphascale ASM9260 support 2015-10-14 09:37:47 +02:00
exynos-combiner.c irqchip/exynos-combiner: Fix usage of __raw IO 2016-06-23 18:26:42 +00:00
irq-alpine-msi.c irqchip/irq-alpine-msi: Don't use <asm-generic/msi.h> 2016-05-11 10:12:25 +01:00
irq-armada-370-xp.c Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-07-29 13:55:30 -07:00
irq-aspeed-vic.c irqchip/aspeed-vic: Add irq controller for Aspeed 2016-06-22 18:44:54 +00:00
irq-ath79-cpu.c irqchip/ath79-cpu: Move the CPU IRQ driver from arch/mips/ath79/ 2016-02-17 13:47:19 +00:00
irq-ath79-misc.c irqchip/ath79-misc: Move the MISC driver from arch/mips/ath79/ 2016-02-17 13:44:31 +00:00
irq-atmel-aic5.c irqchip/atmel-aic: Remove duplicate bit operation 2016-02-08 15:03:42 +01:00
irq-atmel-aic-common.c irqchip/atmel-aic: Change return type of aic_common_set_priority() 2016-02-08 15:03:42 +01:00
irq-atmel-aic-common.h irqchip/atmel-aic: Change return type of aic_common_set_priority() 2016-02-08 15:03:42 +01:00
irq-atmel-aic.c irqchip/atmel-aic: Change return type of aic_common_set_priority() 2016-02-08 15:03:42 +01:00
irq-bcm2835.c irqchip: bcm2835: Avoid arch/arm-specific handle_IRQ 2016-06-04 14:16:59 +00:00
irq-bcm2836.c Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-07-29 13:55:30 -07:00
irq-bcm6345-l1.c irqchips/bmips: Add bcm6345-l1 interrupt controller 2016-02-08 15:03:42 +01:00
irq-bcm7038-l1.c genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
irq-bcm7120-l2.c irqchip/bcm7120-l2: Make probe functions static 2016-06-13 00:56:31 +00:00
irq-brcmstb-l2.c irqchip/brcmstb-l2: Make of probe function static 2016-06-13 00:56:51 +00:00
irq-clps711x.c irqchip: clps711x: Changing the compatibility string to match with the smallest supported chip 2016-07-06 17:38:15 +02:00
irq-crossbar.c irqchip: Mask the non-type/sense bits when translating an IRQ 2016-05-11 10:12:41 +01:00
irq-digicolor.c irqchip: Prepare for local stub header removal 2015-07-11 23:14:23 +02:00
irq-dw-apb-ictl.c genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
irq-eznps.c irqchip: add nps Internal and external irqchips 2016-05-09 09:32:31 +05:30
irq-gic-common.c irqchip/gic: Prepare for adding platform driver 2016-06-13 11:53:52 +01:00
irq-gic-common.h irqchip/gic-v2: Parse and export virtual GIC information 2016-05-03 12:54:21 +02:00
irq-gic-pm.c irqchip/gic: Add platform driver for non-root GICs that require RPM 2016-06-13 11:53:52 +01:00
irq-gic-realview.c irqchip/gic/realview: Support more RealView DCC variants 2016-03-09 09:38:05 +00:00
irq-gic-v2m.c irqchip/gic-v2m: Fix missing include of <linux/irqchip/arm-gic.h> 2016-06-13 00:57:09 +00:00
irq-gic-v3-its-pci-msi.c irqchip/gic-v3-its: Add handling of PCI requester id. 2015-10-16 13:07:13 +01:00
irq-gic-v3-its-platform-msi.c irqchip/gic-v3-its: Parse new version of msi-parent property 2015-10-16 13:07:15 +01:00
irq-gic-v3-its.c irqchip/gicv3-its: Implement two-level(indirect) device table support 2016-06-13 11:53:53 +01:00
irq-gic-v3.c irqchip/gicv3: Remove disabling redistributor and group1 non-secure interrupts 2016-08-17 18:33:07 +01:00
irq-gic.c irqchip/gic: Allow self-SGIs for SMP on UP configurations 2016-08-17 18:31:20 +01:00
irq-hip04.c irqchip/hip04: Convert to hotplug state machine 2016-07-14 09:34:29 +02:00
irq-i8259.c irqchip/i8259: Convert to use irq_set_chained_handler_and_data 2015-10-01 16:32:54 +02:00
irq-imgpdc.c genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
irq-imx-gpcv2.c irqchip: Convert all alloc/xlate users from of_node to fwnode 2015-10-13 19:01:23 +02:00
irq-ingenic.c irqchip: Prepare for local stub header removal 2015-07-11 23:14:23 +02:00
irq-keystone.c irqchip: Kill off set_irq_flags usage 2015-09-16 16:53:38 +02:00
irq-lpc32xx.c irqchip: Add LPC32xx interrupt controller driver 2016-05-11 10:12:11 +01:00
irq-ls-scfg-msi.c irqchip: Add Layerscape SCFG MSI controller support 2016-05-04 09:58:04 +01:00
irq-mbigen.c irqchip/mbigen: Checking for IS_ERR() instead of NULL 2016-05-11 10:12:13 +01:00
irq-metag-ext.c genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
irq-metag.c genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
irq-mips-cpu.c irqchip: Prepare for local stub header removal 2015-07-11 23:14:23 +02:00
irq-mips-gic.c tree-wide: replace config_enabled() with IS_ENABLED() 2016-08-04 08:50:07 -04:00
irq-mmp.c irqchip: Kill off set_irq_flags usage 2015-09-16 16:53:38 +02:00
irq-moxart.c irqchip: Prepare for local stub header removal 2015-07-11 23:14:23 +02:00
irq-mtk-sysirq.c irqchip: Convert all alloc/xlate users from of_node to fwnode 2015-10-13 19:01:23 +02:00
irq-mvebu-odmi.c irqchip/gic: Return IRQ_SET_MASK_OK_DONE in the set_affinity method 2016-02-19 15:42:29 +00:00
irq-mxs.c irqchip/mxs: Fix error check of of_io_request_and_map() 2016-03-10 16:03:30 +01:00
irq-nvic.c irqchip: Convert all alloc/xlate users from of_node to fwnode 2015-10-13 19:01:23 +02:00
irq-omap-intc.c irqchip/omap-intc: Fix missing <linux/irqchip/irq-omap-intc.h> include 2016-06-13 00:57:23 +00:00
irq-or1k-pic.c irqchip: Prepare for local stub header removal 2015-07-11 23:14:23 +02:00
irq-orion.c genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
irq-partition-percpu.c irqchip: Add per-cpu interrupt partitioning library 2016-05-02 13:42:51 +02:00
irq-pic32-evic.c irqchip/irq-pic32-evic: Fix bug with external interrupts. 2016-06-02 18:03:50 +01:00
irq-renesas-h8s.c irqchip: renesas-h8s: Replace ctrl_outw/ctrl_inw with writew/readw 2016-01-20 22:44:13 +09:00
irq-renesas-h8300h.c h8300: Rename ctlr_out/in[bwl] to raw_read/write[bwl] 2015-12-15 10:12:03 +01:00
irq-renesas-intc-irqpin.c irqchip/renesas-intc-irqpin: Improve clock error handling and reporting 2015-11-24 16:54:19 +00:00
irq-renesas-irqc.c irqchip/renesas-irqc: Move over to nested generic chip 2015-09-29 20:41:00 +02:00
irq-s3c24xx.c irqchip/s3c24xx: Fixup IO accessors for big endian 2016-06-23 18:28:00 +00:00
irq-sa11x0.c ARM: kill off set_irq_flags usage 2015-07-28 13:58:13 +02:00
irq-sirfsoc.c irqchip/sirfsoc: Fix sparse warnings on __iomem 2016-06-13 00:48:31 +00:00
irq-st.c irqchip: st: Supply new driver for STi based devices 2015-03-03 19:48:53 +00:00
irq-sun4i.c irqchip/sun4i: Fix compilation outside of arch/arm 2016-02-02 15:46:40 +01:00
irq-sunxi-nmi.c irqchip/sunxi-nmi: Fix error check of of_io_request_and_map() 2016-03-10 16:03:30 +01:00
irq-tango.c irqchip/tango: Add support for Sigma Designs SMP86xx/SMP87xx interrupt controller 2016-02-18 01:18:14 +00:00
irq-tb10x.c genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
irq-tegra.c irqchip/tegra: Fix sparse warnings on __iomem 2016-06-13 00:49:39 +00:00
irq-ts4800.c irqchip/ts4800: Make ts4800_ic_ops static const 2016-02-18 02:09:18 +00:00
irq-versatile-fpga.c irqchip: versatile-fpga: add new compatible for OX810SE SoC 2016-04-26 09:50:51 +02:00
irq-vf610-mscm-ir.c irqchip: Convert all alloc/xlate users from of_node to fwnode 2015-10-13 19:01:23 +02:00
irq-vic.c irqchip/vic: Make vic_syscore_ops and vic_of_init static 2016-06-13 00:57:41 +00:00
irq-vt8500.c irqchip: Kill off set_irq_flags usage 2015-09-16 16:53:38 +02:00
irq-xtensa-mx.c irqchip: Prepare for local stub header removal 2015-07-11 23:14:23 +02:00
irq-xtensa-pic.c irqchip: Prepare for local stub header removal 2015-07-11 23:14:23 +02:00
irq-zevio.c irqchip/zevio: Use irq_data_get_chip_type() helper 2015-12-30 18:29:02 +01:00
irqchip.c irqchip / GIC: Convert the GIC driver to ACPI probing 2015-10-01 02:18:38 +02:00
Kconfig PCI changes for the v4.8 merge window: 2016-08-02 17:12:29 -04:00
Makefile irqchip core changes for v4.8 (second set) 2016-07-02 11:42:56 +02:00
spear-shirq.c remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00