diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-29 22:25:04 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-29 22:25:04 +0300 |
| commit | 21edf50948728f55b685ad95f196ba46196eb767 (patch) | |
| tree | e52eeb864c15cd6d56cf8291504aa24ce5ccf971 | |
| parent | 62180152e0944e815ebbfd0ffd822d2b0e2cd8e7 (diff) | |
| parent | 3d2ce675aba7e2425710e23268579a5d76c7e725 (diff) | |
| download | linux-21edf50948728f55b685ad95f196ba46196eb767.tar.xz | |
Merge tag 'irq-core-2021-06-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"Updates for the interrupt subsystem:
Core changes:
- Cleanup and simplification of common code to invoke the low level
interrupt flow handlers when this invocation requires irqdomain
resolution. Add the necessary core infrastructure.
- Provide a proper interface for modular PMU drivers to set the
interrupt affinity.
- Add a request flag which allows to exclude interrupts from spurious
interrupt detection. Useful especially for IPI handlers which
always return IRQ_HANDLED which turns the spurious interrupt
detection into a pointless waste of CPU cycles.
Driver changes:
- Bulk convert interrupt chip drivers to the new irqdomain low level
flow handler invocation mechanism.
- Add device tree bindings for the Renesas R-Car M3-W+ SoC
- Enable modular build of the Qualcomm PDC driver
- The usual small fixes and improvements"
* tag 'irq-core-2021-06-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (38 commits)
dt-bindings: interrupt-controller: arm,gic-v3: Describe GICv3 optional properties
irqchip: gic-pm: Remove redundant error log of clock bulk
irqchip/sun4i: Remove unnecessary oom message
irqchip/irq-imx-gpcv2: Remove unnecessary oom message
irqchip/imgpdc: Remove unnecessary oom message
irqchip/gic-v3-its: Remove unnecessary oom message
irqchip/gic-v2m: Remove unnecessary oom message
irqchip/exynos-combiner: Remove unnecessary oom message
irqchip: Bulk conversion to generic_handle_domain_irq()
genirq: Move non-irqdomain handle_domain_irq() handling into ARM's handle_IRQ()
genirq: Add generic_handle_domain_irq() helper
irqchip/nvic: Convert from handle_IRQ() to handle_domain_irq()
irqdesc: Fix __handle_domain_irq() comment
genirq: Use irq_resolve_mapping() to implement __handle_domain_irq() and co
irqdomain: Introduce irq_resolve_mapping()
irqdomain: Protect the linear revmap with RCU
irqdomain: Cache irq_data instead of a virq number in the revmap
irqdomain: Use struct_size() helper when allocating irqdomain
irqdomain: Make normal and nomap irqdomains exclusive
powerpc: Move the use of irq_domain_add_nomap() behind a config option
...
106 files changed, 408 insertions, 354 deletions
diff --git a/Documentation/core-api/irq/irq-domain.rst b/Documentation/core-api/irq/irq-domain.rst index 8214e215a8bf..53283b3729a1 100644 --- a/Documentation/core-api/irq/irq-domain.rst +++ b/Documentation/core-api/irq/irq-domain.rst @@ -146,7 +146,6 @@ Legacy irq_domain_add_simple() irq_domain_add_legacy() - irq_domain_add_legacy_isa() irq_domain_create_simple() irq_domain_create_legacy() diff --git a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml index 1ecd1831cf02..c84f9fe7f254 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml +++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml @@ -145,6 +145,19 @@ properties: required: - affinity + clocks: + maxItems: 1 + + clock-names: + items: + - const: aclk + + power-domains: + maxItems: 1 + + resets: + maxItems: 1 + dependencies: mbi-ranges: [ msi-controller ] msi-controller: [ mbi-ranges ] diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.yaml b/Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.yaml index b67b8cbd33fc..abb22db3bb28 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.yaml +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.yaml @@ -29,6 +29,7 @@ properties: - renesas,intc-ex-r8a774c0 # RZ/G2E - renesas,intc-ex-r8a7795 # R-Car H3 - renesas,intc-ex-r8a7796 # R-Car M3-W + - renesas,intc-ex-r8a77961 # R-Car M3-W+ - renesas,intc-ex-r8a77965 # R-Car M3-N - renesas,intc-ex-r8a77970 # R-Car V3M - renesas,intc-ex-r8a77980 # R-Car V3H diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c index 698b6f636156..20ab1e607522 100644 --- a/arch/arm/kernel/irq.c +++ b/arch/arm/kernel/irq.c @@ -63,7 +63,27 @@ int arch_show_interrupts(struct seq_file *p, int prec) */ void handle_IRQ(unsigned int irq, struct pt_regs *regs) { - __handle_domain_irq(NULL, irq, false, regs); + struct pt_regs *old_regs = set_irq_regs(regs); + struct irq_desc *desc; + + irq_enter(); + + /* + * Some hardware gives randomly wrong interrupts. Rather + * than crashing, do something sensible. + */ + if (unlikely(!irq || irq >= nr_irqs)) + desc = NULL; + else + desc = irq_to_desc(irq); + + if (likely(desc)) + handle_irq_desc(desc); + else + ack_bad_irq(irq); + + irq_exit(); + set_irq_regs(old_regs); } /* diff --git a/arch/mips/include/asm/irq.h b/arch/mips/include/asm/irq.h index f021de661c3a..d1477ecb1af9 100644 --- a/arch/mips/include/asm/irq.h +++ b/arch/mips/include/asm/irq.h @@ -11,7 +11,6 @@ #include <linux/linkage.h> #include <linux/smp.h> -#include <linux/irqdomain.h> #include <asm/mipsmtregs.h> diff --git a/arch/mips/lantiq/xway/dma.c b/arch/mips/lantiq/xway/dma.c index aeb1b989cd4e..63dccb2ed08b 100644 --- a/arch/mips/lantiq/xway/dma.c +++ b/arch/mips/lantiq/xway/dma.c @@ -12,6 +12,7 @@ #include <linux/spinlock.h> #include <linux/clk.h> #include <linux/err.h> +#include <linux/of.h> #include <lantiq_soc.h> #include <xway_dma.h> diff --git a/arch/mips/pci/pci-rt3883.c b/arch/mips/pci/pci-rt3883.c index aebd4964ea34..c48e23cf5b5e 100644 --- a/arch/mips/pci/pci-rt3883.c +++ b/arch/mips/pci/pci-rt3883.c @@ -13,6 +13,7 @@ #include <linux/init.h> #include <linux/delay.h> #include <linux/interrupt.h> +#include <linux/irqdomain.h> #include <linux/of.h> #include <linux/of_irq.h> #include <linux/of_pci.h> diff --git a/arch/mips/pci/pci-xtalk-bridge.c b/arch/mips/pci/pci-xtalk-bridge.c index d2216942af18..ab9bedb82b28 100644 --- a/arch/mips/pci/pci-xtalk-bridge.c +++ b/arch/mips/pci/pci-xtalk-bridge.c @@ -13,6 +13,7 @@ #include <linux/platform_data/xtalk-bridge.h> #include <linux/nvmem-consumer.h> #include <linux/crc16.h> +#include <linux/irqdomain.h> #include <asm/pci/bridge.h> #include <asm/paccess.h> diff --git a/arch/mips/sgi-ip27/ip27-irq.c b/arch/mips/sgi-ip27/ip27-irq.c index 42df9fafa943..95c1bff1ab9f 100644 --- a/arch/mips/sgi-ip27/ip27-irq.c +++ b/arch/mips/sgi-ip27/ip27-irq.c @@ -9,6 +9,7 @@ #include <linux/interrupt.h> #include <linux/irq.h> +#include <linux/irqdomain.h> #include <linux/ioport.h> #include <linux/kernel.h> #include <linux/bitops.h> diff --git a/arch/mips/sgi-ip30/ip30-irq.c b/arch/mips/sgi-ip30/ip30-irq.c index e8374e4c705b..ba87704073c8 100644 --- a/arch/mips/sgi-ip30/ip30-irq.c +++ b/arch/mips/sgi-ip30/ip30-irq.c @@ -6,6 +6,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/irq.h> +#include <linux/irqdomain.h> #include <linux/percpu.h> #include <linux/spinlock.h> #include <linux/tick.h> diff --git a/arch/nios2/include/asm/irq.h b/arch/nios2/include/asm/irq.h index 13ce37272279..c52c94884e93 100644 --- a/arch/nios2/include/asm/irq.h +++ b/arch/nios2/include/asm/irq.h @@ -10,6 +10,5 @@ #define NIOS2_CPU_NR_IRQS 32 #include <asm-generic/irq.h> -#include <linux/irqdomain.h> #endif diff --git a/arch/nios2/kernel/irq.c b/arch/nios2/kernel/irq.c index 5f3555ce4865..c6a1a9f6ac42 100644 --- a/arch/nios2/kernel/irq.c +++ b/arch/nios2/kernel/irq.c @@ -11,6 +11,7 @@ #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irqdomain.h> #include <linux/of.h> static u32 ienable; diff --git a/arch/powerpc/include/asm/irq.h b/arch/powerpc/include/asm/irq.h index b2bd58830430..4982f3711fc3 100644 --- a/arch/powerpc/include/asm/irq.h +++ b/arch/powerpc/include/asm/irq.h @@ -6,7 +6,6 @@ /* */ -#include <linux/irqdomain.h> #include <linux/threads.h> #include <linux/list.h> #include <linux/radix-tree.h> @@ -23,8 +22,8 @@ extern atomic_t ppc_n_lost_interrupts; /* Total number of virq in the platform */ #define NR_IRQS CONFIG_NR_IRQS -/* Same thing, used by the generic IRQ code */ -#define NR_IRQS_LEGACY NUM_ISA_INTERRUPTS +/* Number of irqs reserved for a legacy isa controller */ +#define NR_IRQS_LEGACY 16 extern irq_hw_number_t virq_to_hw(unsigned int virq); diff --git a/arch/powerpc/kernel/mce.c b/arch/powerpc/kernel/mce.c index 9a3c2a84a2ac..15e7b4900689 100644 --- a/arch/powerpc/kernel/mce.c +++ b/arch/powerpc/kernel/mce.c @@ -18,6 +18,7 @@ #include <linux/extable.h> #include <linux/ftrace.h> #include <linux/memblock.h> +#include <linux/of.h> #include <asm/interrupt.h> #include <asm/machdep.h> diff --git a/arch/powerpc/kvm/book3s_hv_uvmem.c b/arch/powerpc/kvm/book3s_hv_uvmem.c index 84e5a2dc8be5..b898a596db42 100644 --- a/arch/powerpc/kvm/book3s_hv_uvmem.c +++ b/arch/powerpc/kvm/book3s_hv_uvmem.c @@ -90,6 +90,7 @@ #include <linux/migrate.h> #include <linux/kvm_host.h> #include <linux/ksm.h> +#include <linux/of.h> #include <asm/ultravisor.h> #include <asm/mman.h> #include <asm/kvm_ppc.h> diff --git a/arch/powerpc/kvm/book3s_xive.c b/arch/powerpc/kvm/book3s_xive.c index 9268d386b128..8cfab3547494 100644 --- a/arch/powerpc/kvm/book3s_xive.c +++ b/arch/powerpc/kvm/book3s_xive.c @@ -14,6 +14,7 @@ #include <linux/percpu.h> #include <linux/cpumask.h> #include <linux/uaccess.h> +#include <linux/irqdomain.h> #include <asm/kvm_book3s.h> #include <asm/kvm_ppc.h> #include <asm/hvcall.h> diff --git a/arch/powerpc/kvm/book3s_xive_native.c b/arch/powerpc/kvm/book3s_xive_native.c index 1253666dd4d8..573ecaab3597 100644 --- a/arch/powerpc/kvm/book3s_xive_native.c +++ b/arch/powerpc/kvm/book3s_xive_native.c @@ -12,6 +12,7 @@ #include <linux/spinlock.h> #include <linux/delay.h> #include <linux/file.h> +#include <linux/irqdomain.h> #include <asm/uaccess.h> #include <asm/kvm_book3s.h> #include <asm/kvm_ppc.h> diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c index 6e3495221ab7..2176a5f70746 100644 --- a/arch/powerpc/mm/book3s64/radix_pgtable.c +++ b/arch/powerpc/mm/book3s64/radix_pgtable.c @@ -11,6 +11,7 @@ #include <linux/kernel.h> #include <linux/sched/mm.h> #include <linux/memblock.h> +#include <linux/of.h> #include <linux/of_fdt.h> #include <linux/mm.h> #include <linux/hugetlb.h> diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig index e7c976bcadff..cb70c5f25bc6 100644 --- a/arch/powerpc/platforms/cell/Kconfig +++ b/arch/powerpc/platforms/cell/Kconfig @@ -35,6 +35,7 @@ config PPC_IBM_CELL_BLADE config AXON_MSI bool depends on PPC_IBM_CELL_BLADE && PCI_MSI + select IRQ_DOMAIN_NOMAP default y menu "Cell Broadband Engine options" diff --git a/arch/powerpc/platforms/cell/pmu.c b/arch/powerpc/platforms/cell/pmu.c index 35bbd15582af..b207a7f99be5 100644 --- a/arch/powerpc/platforms/cell/pmu.c +++ b/arch/powerpc/platforms/cell/pmu.c @@ -10,6 +10,7 @@ */ #include <linux/interrupt.h> +#include <linux/irqdomain.h> #include <linux/types.h> #include <linux/export.h> #include <asm/io.h> diff --git a/arch/powerpc/platforms/embedded6xx/flipper-pic.c b/arch/powerpc/platforms/embedded6xx/flipper-pic.c index d39a9213a3e6..609bda2ad5dd 100644 --- a/arch/powerpc/platforms/embedded6xx/flipper-pic.c +++ b/arch/powerpc/platforms/embedded6xx/flipper-pic.c @@ -12,6 +12,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/irq.h> +#include <linux/irqdomain.h> #include <linux/of.h> #include <linux/of_address.h> #include <asm/io.h> diff --git a/arch/powerpc/platforms/powermac/Kconfig b/arch/powerpc/platforms/powermac/Kconfig index c02d8c503b29..b97bf12801eb 100644 --- a/arch/powerpc/platforms/powermac/Kconfig +++ b/arch/powerpc/platforms/powermac/Kconfig @@ -24,6 +24,7 @@ config PPC_PMAC32_PSURGE bool "Support for powersurge upgrade cards" if EXPERT depends on SMP && PPC32 && PPC_PMAC select PPC_SMP_MUXED_IPI + select IRQ_DOMAIN_NOMAP default y help The powersurge cpu boards can be used in the generation diff --git a/arch/powerpc/platforms/ps3/Kconfig b/arch/powerpc/platforms/ps3/Kconfig index e32406e918d0..4d0535cc7946 100644 --- a/arch/powerpc/platforms/ps3/Kconfig +++ b/arch/powerpc/platforms/ps3/Kconfig @@ -7,6 +7,7 @@ config PPC_PS3 select USB_OHCI_BIG_ENDIAN_MMIO select USB_EHCI_BIG_ENDIAN_MMIO select HAVE_PCI + select IRQ_DOMAIN_NOMAP help This option enables support for the Sony PS3 game console and other platforms using the PS3 hypervisor. Enabling this diff --git a/arch/powerpc/platforms/ps3/interrupt.c b/arch/powerpc/platforms/ps3/interrupt.c index 78f2339ed5cb..49871427f599 100644 --- a/arch/powerpc/platforms/ps3/interrupt.c +++ b/arch/powerpc/platforms/ps3/interrupt.c @@ -9,6 +9,7 @@ #include <linux/kernel.h> #include <linux/export.h> #include <linux/irq.h> +#include <linux/irqdomain.h> #include <asm/machdep.h> #include <asm/udbg.h> @@ -45,7 +46,7 @@ * implementation equates HV plug value to Linux virq value, constrains each * interrupt to have a system wide unique plug number, and limits the range * of the plug values to map into the first dword of the bitmaps. This - * gives a usable range of plug values of {NUM_ISA_INTERRUPTS..63}. Note + * gives a usable range of plug values of {NR_IRQS_LEGACY..63}. Note * that there is no constraint on how many in this set an individual thread * can acquire. * @@ -721,7 +722,7 @@ static unsigned int ps3_get_irq(void) } #if defined(DEBUG) - if (unlikely(plug < NUM_ISA_INTERRUPTS || plug > PS3_PLUG_MAX)) { + if (unlikely(plug < NR_IRQS_LEGACY || plug > PS3_PLUG_MAX)) { dump_bmp(&per_cpu(ps3_private, 0)); dump_bmp(&per_cpu(ps3_private, 1)); BUG(); diff --git a/arch/powerpc/platforms/pseries/ibmebus.c b/arch/powerpc/platforms/pseries/ibmebus.c index a15ab33646b3..c6c79ef55e13 100644 --- a/arch/powerpc/platforms/pseries/ibmebus.c +++ b/arch/powerpc/platforms/pseries/ibmebus.c @@ -42,6 +42,7 @@ #include <linux/kobject.h> #include <linux/dma-map-ops.h> #include <linux/interrupt.h> +#include <linux/irqdomain.h> #include <linux/of.h> #include <linux/slab.h> #include <linux/stat.h> diff --git a/arch/powerpc/sysdev/ehv_pic.c b/arch/powerpc/sysdev/ehv_pic.c index 48866e6c1efb..00705258ecf9 100644 --- a/arch/powerpc/sysdev/ehv_pic.c +++ b/arch/powerpc/sysdev/ehv_pic.c @@ -14,6 +14,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/irq.h> +#include <linux/irqdomain.h> #include <linux/smp.h> #include <linux/interrupt.h> #include <linux/slab.h> diff --git a/arch/powerpc/sysdev/fsl_mpic_err.c b/arch/powerpc/sysdev/fsl_mpic_err.c index 13583bbc3e8e..5fa5fa215541 100644 --- a/arch/powerpc/sysdev/fsl_mpic_err.c +++ b/arch/powerpc/sysdev/fsl_mpic_err.c @@ -8,6 +8,7 @@ #include <linux/irq.h> #include <linux/smp.h> #include <linux/interrupt.h> +#include <linux/irqdomain.h> #include <asm/io.h> #include <asm/irq.h> diff --git a/arch/powerpc/sysdev/i8259.c b/arch/powerpc/sysdev/i8259.c index c1d76c344351..dc1a151c63d7 100644 --- a/arch/powerpc/sysdev/i8259.c +++ b/arch/powerpc/sysdev/i8259.c @@ -260,7 +260,8 @@ void i8259_init(struct device_node *node, unsigned long intack_addr) raw_spin_unlock_irqrestore(&i8259_lock, flags); /* create a legacy host */ - i8259_host = irq_domain_add_legacy_isa(node, &i8259_host_ops, NULL); + i8259_host = irq_domain_add_legacy(node, NR_IRQS_LEGACY, 0, 0, + &i8259_host_ops, NULL); if (i8259_host == NULL) { printk(KERN_ERR "i8259: failed to allocate irq host !\n"); return; diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index b0426f28946a..995fb2ada507 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -602,7 +602,7 @@ static void __init mpic_scan_ht_pics(struct mpic *mpic) /* Find an mpic associated with a given linux interrupt */ static struct mpic *mpic_find(unsigned int irq) { - if (irq < NUM_ISA_INTERRUPTS) + if (irq < NR_IRQS_LEGACY) return NULL; return irq_get_chip_data(irq); diff --git a/arch/powerpc/sysdev/tsi108_pci.c b/arch/powerpc/sysdev/tsi108_pci.c index 49f9541954f8..042bb38fa5c2 100644 --- a/arch/powerpc/sysdev/tsi108_pci.c +++ b/arch/powerpc/sysdev/tsi108_pci.c @@ -404,7 +404,8 @@ void __init tsi108_pci_int_init(struct device_node *node) { DBG("Tsi108_pci_int_init: initializing PCI interrupts\n"); - pci_irq_host = irq_domain_add_legacy_isa(node, &pci_irq_domain_ops, NULL); + pci_irq_host = irq_domain_add_legacy(node, NR_IRQS_LEGACY, 0, 0, + &pci_irq_domain_ops, NULL); if (pci_irq_host == NULL) { printk(KERN_ERR "pci_irq_host: failed to allocate irq domain!\n"); return; diff --git a/arch/powerpc/sysdev/xics/icp-hv.c b/arch/powerpc/sysdev/xics/icp-hv.c index 21b9d1bf39ff..6765d9e264a3 100644 --- a/arch/powerpc/sysdev/xics/icp-hv.c +++ b/arch/powerpc/sysdev/xics/icp-hv.c @@ -7,6 +7,7 @@ #include <linux/irq.h> #include <linux/smp.h> #include <linux/interrupt.h> +#include <linux/irqdomain.h> #include <linux/cpu.h> #include <linux/of.h> diff --git a/arch/powerpc/sysdev/xics/icp-opal.c b/arch/powerpc/sysdev/xics/icp-opal.c index 68fd2540b093..675d708863d5 100644 --- a/arch/powerpc/sysdev/xics/icp-opal.c +++ b/arch/powerpc/sysdev/xics/icp-opal.c @@ -7,6 +7,7 @@ #include <linux/irq.h> #include <linux/smp.h> #include <linux/interrupt.h> +#include <linux/irqdomain.h> #include <linux/cpu.h> #include <linux/of.h> diff --git a/arch/powerpc/sysdev/xics/xics-common.c b/arch/powerpc/sysdev/xics/xics-common.c index 7e4305c01bac..fdf8db4444b6 100644 --- a/arch/powerpc/sysdev/xics/xics-common.c +++ b/arch/powerpc/sysdev/xics/xics-common.c @@ -201,7 +201,7 @@ void xics_migrate_irqs_away(void) struct ics *ics; /* We can't set affinity on ISA interrupts */ - if (virq < NUM_ISA_INTERRUPTS) + if (virq < NR_IRQS_LEGACY) continue; /* We only need to migrate enabled IRQS */ if (!desc->action) diff --git a/arch/powerpc/sysdev/xive/Kconfig b/arch/powerpc/sysdev/xive/Kconfig index 785c292d104b..97796c6b63f0 100644 --- a/arch/powerpc/sysdev/xive/Kconfig +++ b/arch/powerpc/sysdev/xive/Kconfig @@ -3,6 +3,7 @@ config PPC_XIVE bool select PPC_SMP_MUXED_IPI select HARDIRQS_SW_RESEND + select IRQ_DOMAIN_NOMAP config PPC_XIVE_NATIVE bool diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index 62543a4eccc0..4d5924e9f766 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -415,7 +415,7 @@ config GOLDFISH_PIC for Goldfish based virtual platforms. config QCOM_PDC - bool "QCOM PDC" + tristate "QCOM PDC" depends on ARCH_QCOM select IRQ_DOMAIN_HIERARCHY help diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c index 0b85d9a3fbff..552aa04ff063 100644 --- a/drivers/irqchip/exynos-combiner.c +++ b/drivers/irqchip/exynos-combiner.c @@ -66,8 +66,9 @@ static void combiner_handle_cascade_irq(struct irq_desc *desc) { struct combiner_chip_data *chip_data = irq_desc_get_handler_data(desc); struct irq_chip *chip = irq_desc_get_chip(desc); - unsigned int cascade_irq, combiner_irq; + unsigned int combiner_irq; unsigned long status; + int ret; chained_irq_enter(chip, desc); @@ -80,12 +81,9 @@ static void combiner_handle_cascade_irq(struct irq_desc *desc) goto out; combiner_irq = chip_data->hwirq_offset + __ffs(status); - cascade_irq = irq_find_mapping(combiner_irq_domain, combiner_irq); - - if (unlikely(!cascade_irq)) + ret = generic_handle_domain_irq(combiner_irq_domain, combiner_irq); + if (unlikely(ret)) handle_bad_irq(desc); - else - generic_handle_irq(cascade_irq); out: chained_irq_exit(chip, desc); @@ -179,10 +177,8 @@ static void __init combiner_init(void __iomem *combiner_base, nr_irq = max_nr * IRQ_IN_COMBINER; combiner_data = kcalloc(max_nr, sizeof (*combiner_data), GFP_KERNEL); - if (!combiner_data) { - pr_warn("%s: could not allocate combiner data\n", __func__); + if (!combiner_data) return; - } combiner_irq_domain = irq_domain_add_linear(np, nr_irq, &combiner_irq_domain_ops, combiner_data); diff --git a/drivers/irqchip/irq-al-fic.c b/drivers/irqchip/irq-al-fic.c index 0b0a73739756..886de028a901 100644 --- a/drivers/irqchip/irq-al-fic.c +++ b/drivers/irqchip/irq-al-fic.c @@ -111,7 +111,6 @@ static void al_fic_irq_handler(struct irq_desc *desc) struct irq_chip *irqchip = irq_desc_get_chip(desc); struct irq_chip_generic *gc = irq_get_domain_generic_chip(domain, 0); unsigned long pending; - unsigned int irq; u32 hwirq; chained_irq_enter(irqchip, desc); @@ -119,10 +118,8 @@ static void al_fic_irq_handler(struct irq_desc *desc) pending = readl_relaxed(fic->base + AL_FIC_CAUSE); pending &= ~gc->mask_cache; - for_each_set_bit(hwirq, &pending, NR_FIC_IRQS) { - irq = irq_find_mapping(domain, hwirq); - generic_handle_irq(irq); - } + for_each_set_bit(hwirq, &pending, NR_FIC_IRQS) + generic_handle_domain_irq(domain, hwirq); chained_irq_exit(irqchip, desc); } diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index 32938dfc0e46..7557ab551295 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -582,20 +582,19 @@ static void armada_370_xp_handle_msi_irq(struct pt_regs *regs, bool is_chained) for (msinr = PCI_MSI_DOORBELL_START; msinr < PCI_MSI_DOORBELL_END; msinr++) { - int irq; + unsigned int irq; if (!(msimask & BIT(msinr))) continue; - if (is_chained) { - irq = irq_find_mapping(armada_370_xp_msi_inner_domain, - msinr - PCI_MSI_DOORBELL_START); - generic_handle_irq(irq); - } else { - irq = msinr - PCI_MSI_DOORBELL_START; + irq = msinr - PCI_MSI_DOORBELL_START; + + if (is_chained) + generic_handle_domain_irq(armada_370_xp_msi_inner_domain, + irq); + else handle_domain_irq(armada_370_xp_msi_inner_domain, irq, regs); - } } } #else @@ -606,7 +605,6 @@ static void armada_370_xp_mpic_handle_cascade_irq(struct irq_desc *desc) { struct irq_chip *chip = irq_desc_get_chip(desc); unsigned long irqmap, irqn, irqsrc, cpuid; - unsigned int cascade_irq; chained_irq_enter(chip, desc); @@ -628,8 +626,7 @@ static void armada_370_xp_mpic_handle_cascade_irq(struct irq_desc *desc) continue; } - cascade_irq = irq_find_mapping(armada_370_xp_mpic_domain, irqn); - generic_handle_irq(cascade_irq); + generic_handle_domain_irq(armada_370_xp_mpic_domain, irqn); } chained_irq_exit(chip, desc); diff --git a/drivers/irqchip/irq-aspeed-i2c-ic.c b/drivers/irqchip/irq-aspeed-i2c-ic.c index 8d591c179f81..a47db16ff960 100644 --- a/drivers/irqchip/irq-aspeed-i2c-ic.c +++ b/drivers/irqchip/irq-aspeed-i2c-ic.c @@ -34,14 +34,12 @@ static void aspeed_i2c_ic_irq_handler(struct irq_desc *desc) struct aspeed_i2c_ic *i2c_ic = irq_desc_get_handler_data(desc); struct irq_chip *chip = irq_desc_get_chip(desc); unsigned long bit, status; - unsigned int bus_irq; chained_irq_enter(chip, desc); status = readl(i2c_ic->base); - for_each_set_bit(bit, &status, ASPEED_I2C_IC_NUM_BUS) { - bus_irq = irq_find_mapping(i2c_ic->irq_domain, bit); - generic_handle_irq(bus_irq); - } + for_each_set_bit(bit, &status, ASPEED_I2C_IC_NUM_BUS) + generic_handle_domain_irq(i2c_ic->irq_domain, bit); + chained_irq_exit(chip, desc); } diff --git a/drivers/irqchip/irq-aspeed-scu-ic.c b/drivers/irqchip/irq-aspeed-scu-ic.c index c90a3346b985..f3c6855a4cef 100644 --- a/drivers/irqchip/irq-aspeed-scu-ic.c +++ b/drivers/irqchip/irq-aspeed-scu-ic.c @@ -44,7 +44,6 @@ struct aspeed_scu_ic { static void aspeed_scu_ic_irq_handler(struct irq_desc *desc) { - unsigned int irq; unsigned int sts; unsigned long bit; unsigned long enabled; @@ -74,9 +73,8 @@ static void aspeed_scu_ic_irq_handler(struct irq_desc *desc) max = scu_ic->num_irqs + bit; for_each_set_bit_from(bit, &status, max) { - irq = irq_find_mapping(scu_ic->irq_domain, - bit - scu_ic->irq_shift); - generic_handle_irq(irq); + generic_handle_domain_irq(scu_ic->irq_domain, + bit - scu_ic->irq_shift); regmap_update_bits(scu_ic->scu, scu_ic->reg, mask, BIT(bit + ASPEED_SCU_IC_STATUS_SHIFT)); diff --git a/drivers/irqchip/irq-ath79-misc.c b/drivers/irqchip/irq-ath79-misc.c index 3d641bb6f3f1..92f001a5ff8d 100644 --- a/drivers/irqchip/irq-ath79-misc.c +++ b/drivers/irqchip/irq-ath79-misc.c @@ -50,7 +50,7 @@ static void ath79_misc_irq_handler(struct irq_desc *desc) while (pending) { int bit = __ffs(pending); - generic_handle_irq(irq_linear_revmap(domain, bit)); + generic_handle_domain_irq(domain, bit); pending &= ~BIT(bit); } diff --git a/drivers/irqchip/irq-bcm2835.c b/drivers/irqchip/irq-bcm2835.c index a1e004af23e7..adc1556ed332 100644 --- a/drivers/irqchip/irq-bcm2835.c +++ b/drivers/irqchip/irq-bcm2835.c @@ -254,7 +254,7 @@ static void bcm2836_chained_handle_irq(struct irq_desc *desc) u32 hwirq; while ((hwirq = get_next_armctrl_hwirq()) != ~0) - generic_handle_irq(irq_linear_revmap(intc.domain, hwirq)); + generic_handle_domain_irq(intc.domain, hwirq); } IRQCHIP_DECLARE(bcm2835_armctrl_ic, "brcm,bcm2835-armctrl-ic", diff --git a/drivers/irqchip/irq-bcm2836.c b/drivers/irqchip/irq-bcm2836.c index 25c9a9c06e41..501facdb4570 100644 --- a/drivers/irqchip/irq-bcm2836.c +++ b/drivers/irqchip/irq-bcm2836.c @@ -161,7 +161,7 @@ static void bcm2836_arm_irqchip_handle_ipi(struct irq_desc *desc) mbox_val = readl_relaxed(intc.base + LOCAL_MAILBOX0_CLR0 + 16 * cpu); if (mbox_val) { int hwirq = ffs(mbox_val) - 1; - generic_handle_irq(irq_find_mapping(ipi_domain, hwirq)); + generic_handle_domain_irq(ipi_domain, hwirq); } chained_irq_exit(chip, desc); diff --git a/drivers/irqchip/irq-bcm7038-l1.c b/drivers/irqchip/irq-bcm7038-l1.c index 9dc9bf8cdcc4..a035c385ca7a 100644 --- a/drivers/irqchip/irq-bcm7038-l1.c +++ b/drivers/irqchip/irq-bcm7038-l1.c @@ -145,10 +145,8 @@ static void bcm7038_l1_irq_handle(struct irq_desc *desc) ~cpu->mask_cache[idx]; raw_spin_unlock_irqrestore(&intc->lock, flags); - for_each_set_bit(hwirq, &pending, IRQS_PER_WORD) { - generic_handle_irq(irq_find_mapping(intc->domain, - base + hwirq)); - } + for_each_set_bit(hwirq, &pending, IRQS_PER_WORD) + generic_handle_domain_irq(intc->domain, base + hwirq); } chained_irq_exit(chip, desc); diff --git a/drivers/irqchip/irq-bcm7120-l2.c b/drivers/irqchip/irq-bcm7120-l2.c index ad59656ccc28..f23d7651ea84 100644 --- a/drivers/irqchip/irq-bcm7120-l2.c +++ b/drivers/irqchip/irq-bcm7120-l2.c @@ -74,10 +74,8 @@ static void bcm7120_l2_intc_irq_handle(struct irq_desc *desc) data->irq_map_mask[idx]; irq_gc_unlock(gc); - for_each_set_bit(hwirq, &pending, IRQS_PER_WORD) { - generic_handle_irq(irq_find_mapping(b->domain, - base + hwirq)); - } + for_each_set_bit(hwirq, &pending, IRQS_PER_WORD) + generic_handle_domain_irq(b->domain, base + hwirq); } chained_irq_exit(chip, desc); diff --git a/drivers/irqchip/irq-brcmstb-l2.c b/drivers/irqchip/irq-brcmstb-l2.c index cdd6a42d4efa..8e0911561f2d 100644 --- a/drivers/irqchip/irq-brcmstb-l2.c +++ b/drivers/irqchip/irq-brcmstb-l2.c @@ -110,7 +110,7 @@ static void brcmstb_l2_intc_irq_handle(struct irq_desc *desc) do { irq = ffs(status) - 1; status &= ~(1 << irq); - generic_handle_irq(irq_linear_revmap(b->domain, irq)); + generic_handle_domain_irq(b->domain, irq); } while (status); out: chained_irq_exit(chip, desc); diff --git a/drivers/irqchip/irq-dw-apb-ictl.c b/drivers/irqchip/irq-dw-apb-ictl.c index 54b09d6c407c..a67266e44491 100644 --- a/drivers/irqchip/irq-dw-apb-ictl.c +++ b/drivers/irqchip/irq-dw-apb-ictl.c @@ -62,9 +62,8 @@ static void dw_apb_ictl_handle_irq_cascaded(struct irq_desc *desc) while (stat) { u32 hwirq = ffs(stat) - 1; - u32 virq = irq_find_mapping(d, gc->irq_base + hwirq); + generic_handle_domain_irq(d, gc->irq_base + hwirq); - generic_handle_irq(virq); stat &= ~BIT(hwirq); } } diff --git a/drivers/irqchip/irq-gic-pm.c b/drivers/irqchip/irq-gic-pm.c index 1337ceceb59b..b60e1853593f 100644 --- a/drivers/irqchip/irq-gic-pm.c +++ b/drivers/irqchip/irq-gic-pm.c @@ -30,10 +30,8 @@ static int gic_runtime_resume(struct device *dev) int ret; ret = clk_bulk_prepare_enable(data->num_clocks, chip_pm->clks); - if (ret) { - dev_err(dev, "clk_enable failed: %d\n", ret); + if (ret) return ret; - } /* * On the very first resume, the pointer to chip_pm->chip_data diff --git a/drivers/irqchip/irq-gic-v2m.c b/drivers/irqchip/irq-gic-v2m.c index 4116b48e60af..be9ea6fd6f8b 100644 --- a/drivers/irqchip/irq-gic-v2m.c +++ b/drivers/irqchip/irq-gic-v2m.c @@ -323,10 +323,8 @@ static int __init gicv2m_init_one(struct fwnode_handle *fwnode, struct v2m_data *v2m; v2m = kzalloc(sizeof(struct v2m_data), GFP_KERNEL); - if (!v2m) { - pr_err("Failed to allocate struct v2m_data.\n"); + if (!v2m) return -ENOMEM; - } INIT_LIST_HEAD(&v2m->entry); v2m->fwnode = fwnode; diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 2e6923c2c8a8..ba39668c3e08 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -4895,10 +4895,8 @@ static int its_init_vpe_domain(void) entries = roundup_pow_of_two(nr_cpu_ids); vpe_proxy.vpes = kcalloc(entries, sizeof(*vpe_proxy.vpes), GFP_KERNEL); - if (!vpe_proxy.vpes) { - pr_err("ITS: Can't allocate GICv4 proxy device array\n"); + if (!vpe_proxy.vpes) return -ENOMEM; - } /* Use the last possible DevID */ devid = GENMASK(device_ids(its) - 1, 0); @@ -5314,10 +5312,8 @@ static void __init acpi_table_parse_srat_its(void) its_srat_maps = kmalloc_array(count, sizeof(struct its_srat_map), GFP_KERNEL); - if (!its_srat_maps) { - pr_warn("SRAT: Failed to allocate memory for its_srat_maps!\n"); + if (!its_srat_maps) return; - } acpi_table_parse_entries(ACPI_SIG_SRAT, sizeof(struct acpi_table_srat), diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 2de9ec8ece0c..d329ec3d64d8 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -375,8 +375,9 @@ static void gic_handle_cascade_irq(struct irq_desc *desc) { struct gic_chip_data *chip_data = irq_desc_get_handler_data(desc); struct irq_chip *chip = irq_desc_get_chip(desc); - unsigned int cascade_irq, gic_irq; + unsigned int gic_irq; unsigned long status; + int ret; chained_irq_enter(chip, desc); @@ -386,14 +387,10 @@ static void gic_handle_cascade_irq(struct irq_desc *desc) if (gic_irq == GICC_INT_SPURIOUS) goto out; - cascade_irq = irq_find_mapping(chip_data->domain, gic_irq); - if (unlikely(gic_irq < 32 || gic_irq > 1020)) { + isb(); + ret = generic_handle_domain_irq(chip_data->domain, gic_irq); + if (unlikely(ret)) handle_bad_irq(desc); - } else { - isb(); - generic_handle_irq(cascade_irq); - } - out: chained_irq_exit(chip, desc); } diff --git a/drivers/irqchip/irq-goldfish-pic.c b/drivers/irqchip/irq-goldfish-pic.c index 4f021530e7f3..513f6edbbe95 100644 --- a/drivers/irqchip/irq-goldfish-pic.c +++ b/drivers/irqchip/irq-goldfish-pic.c @@ -34,15 +34,14 @@ static void goldfish_pic_cascade(struct irq_desc *desc) { struct goldfish_pic_data *gfpic = irq_desc_get_handler_data(desc); struct irq_chip *host_chip = irq_desc_get_chip(desc); - u32 pending, hwirq, virq; + u32 pending, hwirq; chained_irq_enter(host_chip, desc); pending = readl(gfpic->base + GFPIC_REG_IRQ_PENDING); while (pending) { hwirq = __fls(pending); - virq = irq_linear_revmap(gfpic->irq_domain, hwirq); - generic_handle_irq(virq); + generic_handle_domain_irq(gfpic->irq_domain, hwirq); pending &= ~(1 << hwirq); } diff --git a/drivers/irqchip/irq-i8259.c b/drivers/irqchip/irq-i8259.c index b6f6aa7b2862..b70ce0d3c092 100644 --- a/drivers/irqchip/irq-i8259.c +++ b/drivers/irqchip/irq-i8259.c @@ -333,13 +333,11 @@ static void i8259_irq_dispatch(struct irq_desc *desc) { struct irq_domain *domain = irq_desc_get_handler_data(desc); int hwirq = i8259_poll(); - unsigned int irq; if (hwirq < 0) return; - irq = irq_linear_revmap(domain, hwirq); - generic_handle_irq(irq); + generic_handle_domain_irq(domain, hwirq); } int __init i8259_of_init(struct device_node *node, struct device_node *parent) diff --git a/drivers/irqchip/irq-idt3243x.c b/drivers/irqchip/irq-idt3243x.c index f0996820077a..0732a0e9af62 100644 --- a/drivers/irqchip/irq-idt3243x.c +++ b/drivers/irqchip/irq-idt3243x.c @@ -28,7 +28,7 @@ static void idt_irq_dispatch(struct irq_desc *desc) { struct idt_pic_data *idtpic = irq_desc_get_handler_data(desc); struct irq_chip *host_chip = irq_desc_get_chip(desc); - u32 pending, hwirq, virq; + u32 pending, hwirq; chained_irq_enter(host_chip, desc); @@ -36,9 +36,7 @@ static void idt_irq_dispatch(struct irq_desc *desc) pending &= ~idtpic->gc->mask_cache; while (pending) { hwirq = __fls(pending); - virq = irq_linear_revmap(idtpic->irq_domain, hwirq); - if (virq) - generic_handle_irq(virq); + generic_handle_domain_irq(idtpic->irq_domain, hwirq); pending &= ~(1 << hwirq); } diff --git a/drivers/irqchip/irq-imgpdc.c b/drivers/irqchip/irq-imgpdc.c index 698d07f48fed..5831be454673 100644 --- a/drivers/irqchip/irq-imgpdc.c +++ b/drivers/irqchip/irq-imgpdc.c @@ -223,7 +223,7 @@ static void pdc_intc_perip_isr(struct irq_desc *desc) { unsigned int irq = irq_desc_get_irq(desc); struct pdc_intc_priv *priv; - unsigned int i, irq_no; + unsigned int i; priv = (struct pdc_intc_priv *)irq_desc_get_handler_data(desc); @@ -237,14 +237,13 @@ static void pdc_intc_perip_isr(struct irq_desc *desc) found: /* pass on the interrupt */ - irq_no = irq_linear_revmap(priv->domain, i); - generic_handle_irq(irq_no); + generic_handle_domain_irq(priv->domain, i); } static void pdc_intc_syswake_isr(struct irq_desc *desc) { struct pdc_intc_priv *priv; - unsigned int syswake, irq_no; + unsigned int syswake; unsigned int status; priv = (struct pdc_intc_priv *)irq_desc_get_handler_data(desc); @@ -258,9 +257,7 @@ static void pdc_intc_syswake_isr(struct irq_desc *desc) if (!(status & 1)) continue; - irq_no = irq_linear_revmap(priv->domain, - syswake_to_hwirq(syswake)); - generic_handle_irq(irq_no); + generic_handle_domain_irq(priv->domain, syswake_to_hwirq(syswake)); } } @@ -316,10 +313,8 @@ static int pdc_intc_probe(struct platform_device *pdev) /* Allocate driver data */ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); - if (!priv) { - dev_err(&pdev->dev, "cannot allocate device data\n"); + if (!priv) return -ENOMEM; - } raw_spin_lock_init(&priv->lock); platform_set_drvdata(pdev, priv); @@ -356,10 +351,8 @@ static int pdc_intc_probe(struct platform_device *pdev) /* Get peripheral IRQ numbers */ priv->perip_irqs = devm_kcalloc(&pdev->dev, 4, priv->nr_perips, GFP_KERNEL); - if (!priv->perip_irqs) { - dev_err(&pdev->dev, "cannot allocate perip IRQ list\n"); + if (!priv->perip_irqs) return -ENOMEM; - } for (i = 0; i < priv->nr_perips; ++i) { irq = platform_get_irq(pdev, 1 + i); if (irq < 0) diff --git a/drivers/irqchip/irq-imx-gpcv2.c b/drivers/irqchip/irq-imx-gpcv2.c index 7031ef44de4f..5b5a365dbd5e 100644 --- a/drivers/irqchip/irq-imx-gpcv2.c +++ b/drivers/irqchip/irq-imx-gpcv2.c @@ -228,10 +228,8 @@ static int __init imx_gpcv2_irqchip_init(struct device_node *node, } cd = kzalloc(sizeof(struct gpcv2_irqchip_data), GFP_KERNEL); - if (!cd) { - pr_err("%pOF: kzalloc failed!\n", node); + if (!cd) return -ENOMEM; - } raw_spin_lock_init(&cd->rlock); diff --git a/drivers/irqchip/irq-imx-intmux.c b/drivers/irqchip/irq-imx-intmux.c index 7709f9712cb3..e86ff743e98c 100644 --- a/drivers/irqchip/irq-imx-intmux.c +++ b/drivers/irqchip/irq-imx-intmux.c @@ -182,18 +182,15 @@ static void imx_intmux_irq_handler(struct irq_desc *desc) struct intmux_data *data = container_of(irqchip_data, struct intmux_data, irqchip_data[idx]); unsigned long irqstat; - int pos, virq; + int pos; chained_irq_enter(irq_desc_get_chip(desc), desc); /* read the interrupt source pending status of this channel */ irqstat = readl_relaxed(data->regs + CHANIPR(idx)); - for_each_set_bit(pos, &irqstat, 32) { - virq = irq_find_mapping(irqchip_data->domain, pos); - if (virq) - generic_handle_irq(virq); - } + for_each_set_bit(pos, &irqstat, 32) + generic_handle_domain_irq(irqchip_data->domain, pos); chained_irq_exit(irq_desc_get_chip(desc), desc); } diff --git a/drivers/irqchip/irq-imx-irqsteer.c b/drivers/irqchip/irq-imx-irqsteer.c index 1edf7692a790..8d91a02593fc 100644 --- a/drivers/irqchip/irq-imx-irqsteer.c +++ b/drivers/irqchip/irq-imx-irqsteer.c @@ -122,7 +122,7 @@ static void imx_irqsteer_irq_handler(struct irq_desc *desc) for (i = 0; i < 2; i++, hwirq += 32) { int idx = imx_irqsteer_get_reg_index(data, hwirq); unsigned long irqmap; - int pos, virq; + int pos; if (hwirq >= data->reg_num * 32) break; @@ -130,11 +130,8 @@ static void imx_irqsteer_irq_handler(struct irq_desc *desc) irqmap = readl_relaxed(data->regs + CHANSTATUS(idx, data->reg_num)); - for_each_set_bit(pos, &irqmap, 32) { - virq = irq_find_mapping(data->domain, pos + hwirq); - if (virq) - generic_handle_irq(virq); - } + for_each_set_bit(pos, &irqmap, 32) + generic_handle_domain_irq(data->domain, pos + hwirq); } chained_irq_exit(irq_desc_get_chip(desc), desc); diff --git a/drivers/irqchip/irq-ingenic-tcu.c b/drivers/irqchip/irq-ingenic-tcu.c index b938d1d04d96..34a7d261b710 100644 --- a/drivers/irqchip/irq-ingenic-tcu.c +++ b/drivers/irqchip/irq-ingenic-tcu.c @@ -38,7 +38,7 @@ static void ingenic_tcu_intc_cascade(struct irq_desc *desc) irq_reg &= ~irq_mask; for_each_set_bit(i, (unsigned long *)&irq_reg, 32) - generic_handle_irq(irq_linear_revmap(domain, i)); + generic_handle_domain_irq(domain, i); chained_irq_exit(irq_chip, desc); } diff --git a/drivers/irqchip/irq-ingenic.c b/drivers/irqchip/irq-ingenic.c index ea36bb00be80..cee839ca627e 100644 --- a/drivers/irqchip/irq-ingenic.c +++ b/drivers/irqchip/irq-ingenic.c @@ -49,8 +49,7 @@ static irqreturn_t intc_cascade(int irq, void *data) while (pending) { int bit = __fls(pending); - irq = irq_linear_revmap(domain, bit + (i * 32)); - generic_handle_irq(irq); + generic_handle_domain_irq(domain, bit + (i * 32)); pending &= ~BIT(bit); } } diff --git a/drivers/irqchip/irq-keystone.c b/drivers/irqchip/irq-keystone.c index 8118ebe80b09..d47c8041e5bc 100644 --- a/drivers/irqchip/irq-keystone.c +++ b/drivers/irqchip/irq-keystone.c @@ -89,7 +89,7 @@ static irqreturn_t keystone_irq_handler(int irq, void *keystone_irq) struct keystone_irq_device *kirq = keystone_irq; unsigned long wa_lock_flags; unsigned long pending; - int src, virq; + int src, err; dev_dbg(kirq->dev, "start irq %d\n", irq); @@ -104,16 +104,14 @@ static irqreturn_t keystone_irq_handler(int irq, void *keystone_irq) for (src = 0; src < KEYSTONE_N_IRQ; src++) { if (BIT(src) & pending) { - virq = irq_find_mapping(kirq->irqd, src); - dev_dbg(kirq->dev, "dispatch bit %d, virq %d\n", - src, virq); - if (!virq) - dev_warn(kirq->dev, "spurious irq detected hwirq %d, virq %d\n", - src, virq); raw_spin_lock_irqsave(&kirq->wa_lock, wa_lock_flags); - generic_handle_irq(virq); + err = generic_handle_domain_irq(kirq->irqd, src); raw_spin_unlock_irqrestore(&kirq->wa_lock, wa_lock_flags); + + if (err) + dev_warn_ratelimited(kirq->dev, "spurious irq detected hwirq %d\n", + src); } } diff --git a/drivers/irqchip/irq-loongson-htpic.c b/drivers/irqchip/irq-loongson-htpic.c index 1b801c4fb026..f4abdf156de7 100644 --- a/drivers/irqchip/irq-loongson-htpic.c +++ b/drivers/irqchip/irq-loongson-htpic.c @@ -48,7 +48,7 @@ static void htpic_irq_dispatch(struct irq_desc *desc) break; } - generic_handle_irq(irq_linear_revmap(priv->domain, bit)); + generic_handle_domain_irq(priv->domain, bit); pending &= ~BIT(bit); } chained_irq_exit(chip, desc); diff --git a/drivers/irqchip/irq-loongson-htvec.c b/drivers/irqchip/irq-loongson-htvec.c index 6392aafb9a63..60a335d7e64e 100644 --- a/drivers/irqchip/irq-loongson-htvec.c +++ b/drivers/irqchip/irq-loongson-htvec.c @@ -47,8 +47,8 @@ static void htvec_irq_dispatch(struct irq_desc *desc) while (pending) { int bit = __ffs(pending); - generic_handle_irq(irq_linear_revmap(priv->htvec_domain, bit + - VEC_COUNT_PER_REG * i)); + generic_handle_domain_irq(priv->htvec_domain, + bit + VEC_COUNT_PER_REG * i); pending &= ~BIT(bit); handled = true; } diff --git a/drivers/irqchip/irq-loongson-liointc.c b/drivers/irqchip/irq-loongson-liointc.c index 8ccb30421806..649c58391618 100644 --- a/drivers/irqchip/irq-loongson-liointc.c +++ b/drivers/irqchip/irq-loongson-liointc.c @@ -73,7 +73,7 @@ static void liointc_chained_handle_irq(struct irq_desc *desc) while (pending) { int bit = __ffs(pending); - generic_handle_irq(irq_find_mapping(gc->domain, bit)); + generic_handle_domain_irq(gc->domain, bit); pending &= ~BIT(bit); } diff --git a/drivers/irqchip/irq-lpc32xx.c b/drivers/irqchip/irq-lpc32xx.c index 7d9b388afe64..5e6f6e25f2ae 100644 --- a/drivers/irqchip/irq-lpc32xx.c +++ b/drivers/irqchip/irq-lpc32xx.c @@ -141,7 +141,7 @@ static void lpc32xx_sic_handler(struct irq_desc *desc) while (hwirq) { irq = __ffs(hwirq); hwirq &= ~BIT(irq); - generic_handle_irq(irq_find_mapping(ic->domain, irq)); + generic_handle_domain_irq(ic->domain, irq); } chained_irq_exit(chip, desc); diff --git a/drivers/irqchip/irq-ls-scfg-msi.c b/drivers/irqchip/irq-ls-scfg-msi.c index 61dbfda08527..55322da51c56 100644 --- a/drivers/irqchip/irq-ls-scfg-msi.c +++ b/drivers/irqchip/irq-ls-scfg-msi.c @@ -194,7 +194,7 @@ static void ls_scfg_msi_irq_handler(struct irq_desc *desc) struct ls_scfg_msir *msir = irq_desc_get_handler_data(desc); struct ls_scfg_msi *msi_data = msir->msi_data; unsigned long val; - int pos, size, virq, hwirq; + int pos, size, hwirq; chained_irq_enter(irq_desc_get_chip(desc), desc); @@ -206,9 +206,7 @@ static void ls_scfg_msi_irq_handler(struct irq_desc *desc) for_each_set_bit_from(pos, &val, size) { hwirq = ((msir->bit_end - pos) << msi_data->cfg->ibs_shift) | msir->srs; - virq = irq_find_mapping(msi_data->parent, hwirq); - if (virq) - generic_handle_irq(virq); + generic_handle_domain_irq(msi_data->parent, hwirq); } chained_irq_exit(irq_desc_get_chip(desc), desc); diff --git a/drivers/irqchip/irq-ls1x.c b/drivers/irqchip/irq-ls1x.c index 353111a10413..77a3f7dfaaf0 100644 --- a/drivers/irqchip/irq-ls1x.c +++ b/drivers/irqchip/irq-ls1x.c @@ -50,7 +50,7 @@ static void ls1x_chained_handle_irq(struct irq_desc *desc) while (pending) { int bit = __ffs(pending); - generic_handle_irq(irq_find_mapping(priv->domain, bit)); + generic_handle_domain_irq(priv->domain, bit); pending &= ~BIT(bit); } diff --git a/drivers/irqchip/irq-mbigen.c b/drivers/irqchip/irq-mbigen.c index 2cb45c6b8501..f565317a3da3 100644 --- a/drivers/irqchip/irq-mbigen.c +++ b/drivers/irqchip/irq-mbigen.c @@ -273,6 +273,12 @@ static int mbigen_of_create_domain(struct platform_device *pdev, } #ifdef CONFIG_ACPI +static const struct acpi_device_id mbigen_acpi_match[] = { + { "HISI0152", 0 }, + {} +}; +MODULE_DEVICE_TABLE(acpi, mbigen_acpi_match); + static int mbigen_acpi_create_domain(struct platform_device *pdev, struct mbigen_device *mgn_chip) { @@ -369,12 +375,6 @@ static const struct of_device_id mbigen_of_match[] = { }; MODULE_DEVICE_TABLE(of, mbigen_of_match); -static const struct acpi_device_id mbigen_acpi_match[] = { - { "HISI0152", 0 }, - {} -}; -MODULE_DEVICE_TABLE(acpi, mbigen_acpi_match); - static struct platform_driver mbigen_platform_driver = { .driver = { .name = "Hisilicon MBIGEN-V2", diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c index 215885962bb0..b146e069bf5b 100644 --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -16,6 +16,7 @@ #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/irqchip.h> +#include <linux/irqdomain.h> #include <linux/of_address.h> #include <linux/percpu.h> #include <linux/sched.h> @@ -147,7 +148,7 @@ int gic_get_c0_fdc_int(void) static void gic_handle_shared_int(bool chained) { - unsigned int intr, virq; + unsigned int intr; unsigned long *pcpu_mask; DECLARE_BITMAP(pending, GIC_MAX_INTRS); @@ -164,12 +165,12 @@ static void gic_handle_shared_int(bool chained) bitmap_and(pending, pending, pcpu_mask, gic_shared_intrs); for_each_set_bit(intr, pending, gic_shared_intrs) { - virq = irq_linear_revmap(gic_irq_domain, - GIC_SHARED_TO_HWIRQ(intr)); if (chained) - generic_handle_irq(virq); + generic_handle_domain_irq(gic_irq_domain, + GIC_SHARED_TO_HWIRQ(intr)); else - do_IRQ(virq); + do_IRQ(irq_find_mapping(gic_irq_domain, + GIC_SHARED_TO_HWIRQ(intr))); } } @@ -307,7 +308,7 @@ static struct irq_chip gic_edge_irq_controller = { static void gic_handle_local_int(bool chained) { unsigned long pending, masked; - unsigned int intr, virq; + unsigned int intr; pending = read_gic_vl_pend(); masked = read_gic_vl_mask(); @@ -315,12 +316,12 @@ static void gic_handle_local_int(bool chained) bitmap_and(&pending, &pending, &masked, GIC_NUM_LOCAL_INTRS); for_each_set_bit(intr, &pending, GIC_NUM_LOCAL_INTRS) { - virq = irq_linear_revmap(gic_irq_domain, - GIC_LOCAL_TO_HWIRQ(intr)); if (chained) - generic_handle_irq(virq); + generic_handle_domain_irq(gic_irq_domain, + GIC_LOCAL_TO_HWIRQ(intr)); else - do_IRQ(virq); + do_IRQ(irq_find_mapping(gic_irq_domain, + GIC_LOCAL_TO_HWIRQ(intr))); } } diff --git a/drivers/irqchip/irq-mscc-ocelot.c b/drivers/irqchip/irq-mscc-ocelot.c index 8235d98650c1..4d0c3532dbe7 100644 --- a/drivers/irqchip/irq-mscc-ocelot.c +++ b/drivers/irqchip/irq-mscc-ocelot.c @@ -107,7 +107,7 @@ static void ocelot_irq_handler(struct irq_desc *desc) while (reg) { u32 hwirq = __fls(reg); - generic_handle_irq(irq_find_mapping(d, hwirq)); + generic_handle_domain_irq(d, hwirq); reg &= ~(BIT(hwirq)); } diff --git a/drivers/irqchip/irq-mvebu-pic.c b/drivers/irqchip/irq-mvebu-pic.c index eec63951129a..dc1cee4b0fe1 100644 --- a/drivers/irqchip/irq-mvebu-pic.c +++ b/drivers/irqchip/irq-mvebu-pic.c @@ -91,15 +91,12 @@ static void mvebu_pic_handle_cascade_irq(struct irq_desc *desc) struct mvebu_pic *pic = irq_desc_get_handler_data(desc); struct irq_chip *chip = irq_desc_get_chip(desc); unsigned long irqmap, irqn; - unsigned int cascade_irq; irqmap = readl_relaxed(pic->base + PIC_CAUSE); chained_irq_enter(chip, desc); - for_each_set_bit(irqn, &irqmap, BITS_PER_LONG) { - cascade_irq = irq_find_mapping(pic->domain, irqn); - generic_handle_irq(cascade_irq); - } + for_each_set_bit(irqn, &irqmap, BITS_PER_LONG) + generic_handle_domain_irq(pic->domain, irqn); chained_irq_exit(chip, desc); } diff --git a/drivers/irqchip/irq-mvebu-sei.c b/drivers/irqchip/irq-mvebu-sei.c index 3a7b7a7f20ca..4ecef6d83777 100644 --- a/drivers/irqchip/irq-mvebu-sei.c +++ b/drivers/irqchip/irq-mvebu-sei.c @@ -337,17 +337,12 @@ static void mvebu_sei_handle_cascade_irq(struct irq_desc *desc) irqmap = readl_relaxed(sei->base + GICP_SECR(idx)); for_each_set_bit(bit, &irqmap, SEI_IRQ_COUNT_PER_REG) { unsigned long hwirq; - unsigned int virq; + int err; hwirq = idx * SEI_IRQ_COUNT_PER_REG + bit; - virq = irq_find_mapping(sei->sei_domain, hwirq); - if (likely(virq)) { - generic_handle_irq(virq); - continue; - } - - dev_warn(sei->dev, - "Spurious IRQ detected (hwirq %lu)\n", hwirq); + err = generic_handle_domain_irq(sei->sei_domain, hwirq); + if (unlikely(err)) + dev_warn(sei->dev, "Spurious IRQ detected (hwirq %lu)\n", hwirq); } } diff --git a/drivers/irqchip/irq-nvic.c b/drivers/irqchip/irq-nvic.c index f747e2209ea9..b31c4cff4d3a 100644 --- a/drivers/irqchip/irq-nvic.c +++ b/drivers/irqchip/irq-nvic.c @@ -40,9 +40,7 @@ static struct irq_domain *nvic_irq_domain; asmlinkage void __exception_irq_entry nvic_handle_irq(irq_hw_number_t hwirq, struct pt_regs *regs) { - unsigned int irq = irq_linear_revmap(nvic_irq_domain, hwirq); - - handle_IRQ(irq, regs); + handle_domain_irq(nvic_irq_domain, hwirq, regs); } static int nvic_irq_domain_alloc(struct irq_domain *domain, unsigned int virq, diff --git a/drivers/irqchip/irq-orion.c b/drivers/irqchip/irq-orion.c index c4b5ffb61954..b6868f7b805a 100644 --- a/drivers/irqchip/irq-orion.c +++ b/drivers/irqchip/irq-orion.c @@ -117,7 +117,7 @@ static void orion_bridge_irq_handler(struct irq_desc *desc) while (stat) { u32 hwirq = __fls(stat); - generic_handle_irq(irq_find_mapping(d, gc->irq_base + hwirq)); + generic_handle_domain_irq(d, gc->irq_base + hwirq); stat &= ~(1 << hwirq); } } diff --git a/drivers/irqchip/irq-partition-percpu.c b/drivers/irqchip/irq-partition-percpu.c index 0c4c8ed7064e..89c23a1566dc 100644 --- a/drivers/irqchip/irq-partition-percpu.c +++ b/drivers/irqchip/irq-partition-percpu.c @@ -124,13 +124,10 @@ static void partition_handle_irq(struct irq_desc *desc) break; } - if (unlikely(hwirq == part->nr_parts)) { + if (unlikely(hwirq == part->nr_parts)) handle_bad_irq(desc); - } else { - unsigned int irq; - irq = irq_find_mapping(part->domain, hwirq); - generic_handle_irq(irq); - } + else + generic_handle_domain_irq(part->domain, hwirq); chained_irq_exit(chip, desc); } diff --git a/drivers/irqchip/irq-pruss-intc.c b/drivers/irqchip/irq-pruss-intc.c index 92fb5780dc10..fa8d89b02ec0 100644 --- a/drivers/irqchip/irq-pruss-intc.c +++ b/drivers/irqchip/irq-pruss-intc.c @@ -488,8 +488,7 @@ static void pruss_intc_irq_handler(struct irq_desc *desc) while (true) { u32 hipir; - unsigned int virq; - int hwirq; + int hwirq, err; /* get highest priority pending PRUSS system event */ hipir = pruss_intc_read_reg(intc, PRU_INTC_HIPIR(host_irq)); @@ -497,16 +496,14 @@ static void pruss_intc_irq_handler(struct irq_desc *desc) break; hwirq = hipir & GENMASK(9, 0); - virq = irq_find_mapping(intc->domain, hwirq); + err = generic_handle_domain_irq(intc->domain, hwirq); /* * NOTE: manually ACK any system events that do not have a * handler mapped yet */ - if (WARN_ON_ONCE(!virq)) + if (WARN_ON_ONCE(err)) pruss_intc_write_reg(intc, PRU_INTC_SICR, hwirq); - else - generic_handle_irq(virq); } chained_irq_exit(chip, desc); diff --git a/drivers/irqchip/irq-realtek-rtl.c b/drivers/irqchip/irq-realtek-rtl.c index b57c67dfab5b..fd9f275592d2 100644 --- a/drivers/irqchip/irq-realtek-rtl.c +++ b/drivers/irqchip/irq-realtek-rtl.c @@ -85,7 +85,7 @@ static void realtek_irq_dispatch(struct irq_desc *desc) goto out; } domain = irq_desc_get_handler_data(desc); - generic_handle_irq(irq_find_mapping(domain, __ffs(pending))); + generic_handle_domain_irq(domain, __ffs(pending)); out: chained_irq_exit(chip, desc); diff --git a/drivers/irqchip/irq-renesas-irqc.c b/drivers/irqchip/irq-renesas-irqc.c index 11abc09ef76c..07a6d8b42b63 100644 --- a/drivers/irqchip/irq-renesas-irqc.c +++ b/drivers/irqchip/irq-renesas-irqc.c @@ -115,7 +115,7 @@ static irqreturn_t irqc_irq_handler(int irq, void *dev_id) if (ioread32(p->iomem + DETECT_STATUS) & bit) { iowrite32(bit, p->iomem + DETECT_STATUS); irqc_dbg(i, "demux2"); - generic_handle_irq(irq_find_mapping(p->irq_domain, i->hw_irq)); + generic_handle_domain_irq(p->irq_domain, i->hw_irq); return IRQ_HANDLED; } return IRQ_NONE; diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive-plic.c index 97d4d04b0a80..cf74cfa82045 100644 --- a/drivers/irqchip/irq-sifive-plic.c +++ b/drivers/irqchip/irq-sifive-plic.c @@ -233,13 +233,11 @@ static void plic_handle_irq(struct irq_desc *desc) chained_irq_enter(chip, desc); while ((hwirq = readl(claim))) { - int irq = irq_find_mapping(handler->priv->irqdomain, hwirq); - - if (unlikely(irq <= 0)) + int err = generic_handle_domain_irq(handler->priv->irqdomain, + hwirq); + if (unlikely(err)) pr_warn_ratelimited("can't find mapping for hwirq %lu\n", hwirq); - else - generic_handle_irq(irq); } chained_irq_exit(chip, desc); diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c index 4704f2ee5797..33c76710f845 100644 --- a/drivers/irqchip/irq-stm32-exti.c +++ b/drivers/irqchip/irq-stm32-exti.c @@ -257,7 +257,7 @@ static void stm32_irq_handler(struct irq_desc *desc) { struct irq_domain *domain = irq_desc_get_handler_data(desc); struct irq_chip *chip = irq_desc_get_chip(desc); - unsigned int virq, nbanks = domain->gc->num_chips; + unsigned int nbanks = domain->gc->num_chips; struct irq_chip_generic *gc; unsigned long pending; int n, i, irq_base = 0; @@ -268,11 +268,9 @@ static void stm32_irq_handler(struct irq_desc *desc) gc = irq_get_domain_generic_chip(domain, irq_base); while ((pending = stm32_exti_pending(gc))) { - for_each_set_bit(n, &pending, IRQS_PER_BANK) { - virq = irq_find_mapping(domain, irq_base + n); - generic_handle_irq(virq); - } - } + for_each_set_bit(n, &pending, IRQS_PER_BANK) + generic_handle_domain_irq(domain, irq_base + n); + } } chained_irq_exit(chip, desc); diff --git a/drivers/irqchip/irq-sun4i.c b/drivers/irqchip/irq-sun4i.c index 9ea94456b178..8a315d6a3399 100644 --- a/drivers/irqchip/irq-sun4i.c +++ b/drivers/irqchip/irq-sun4i.c @@ -147,10 +147,8 @@ static int __init sun4i_ic_of_init(struct device_node *node, struct device_node *parent) { irq_ic_data = kzalloc(sizeof(struct sun4i_irq_chip_data), GFP_KERNEL); - if (!irq_ic_data) { - pr_err("kzalloc failed!\n"); + if (!irq_ic_data) return -ENOMEM; - } irq_ic_data->enable_reg_offset = SUN4I_IRQ_ENABLE_REG_OFFSET; irq_ic_data->mask_reg_offset = SUN4I_IRQ_MASK_REG_OFFSET; @@ -164,10 +162,8 @@ static int __init suniv_ic_of_init(struct device_node *node, struct device_node *parent) { irq_ic_data = kzalloc(sizeof(struct sun4i_irq_chip_data), GFP_KERNEL); - if (!irq_ic_data) { - pr_err("kzalloc failed!\n"); + if (!irq_ic_data) return -ENOMEM; - } irq_ic_data->enable_reg_offset = SUNIV_IRQ_ENABLE_REG_OFFSET; irq_ic_data->mask_reg_offset = SUNIV_IRQ_MASK_REG_OFFSET; diff --git a/drivers/irqchip/irq-sunxi-nmi.c b/drivers/irqchip/irq-sunxi-nmi.c index 9f2bd0c5d289..21d49791f855 100644 --- a/drivers/irqchip/irq-sunxi-nmi.c +++ b/drivers/irqchip/irq-sunxi-nmi.c @@ -88,10 +88,9 @@ static void sunxi_sc_nmi_handle_irq(struct irq_desc *desc) { struct irq_domain *domain = irq_desc_get_handler_data(desc); struct irq_chip *chip = irq_desc_get_chip(desc); - unsigned int virq = irq_find_mapping(domain, 0); chained_irq_enter(chip, desc); - generic_handle_irq(virq); + generic_handle_domain_irq(domain, 0); chained_irq_exit(chip, desc); } diff --git a/drivers/irqchip/irq-tb10x.c b/drivers/irqchip/irq-tb10x.c index 9a63b02b8176..8a0e69298e83 100644 --- a/drivers/irqchip/irq-tb10x.c +++ b/drivers/irqchip/irq-tb10x.c @@ -91,7 +91,7 @@ static void tb10x_irq_cascade(struct irq_desc *desc) struct irq_domain *domain = irq_desc_get_handler_data(desc); unsigned int irq = irq_desc_get_irq(desc); - generic_handle_irq(irq_find_mapping(domain, irq)); + generic_handle_domain_irq(domain, irq); } static int __init of_tb10x_init_irq(struct device_node *ictl, diff --git a/drivers/irqchip/irq-ti-sci-inta.c b/drivers/irqchip/irq-ti-sci-inta.c index ca1f593f4d13..97f454ec376b 100644 --- a/drivers/irqchip/irq-ti-sci-inta.c +++ b/drivers/irqchip/irq-ti-sci-inta.c @@ -147,7 +147,7 @@ static void ti_sci_inta_irq_handler(struct irq_desc *desc) struct ti_sci_inta_vint_desc *vint_desc; struct ti_sci_inta_irq_domain *inta; struct irq_domain *domain; - unsigned int virq, bit; + unsigned int bit; unsigned long val; vint_desc = irq_desc_get_handler_data(desc); @@ -159,11 +159,8 @@ static void ti_sci_inta_irq_handler(struct irq_desc *desc) val = readq_relaxed(inta->base + vint_desc->vint_id * 0x1000 + VINT_STATUS_MASKED_OFFSET); - for_each_set_bit(bit, &val, MAX_EVENTS_PER_VINT) { - virq = irq_find_mapping(domain, vint_desc->events[bit].hwirq); - if (virq) - generic_handle_irq(virq); - } + for_each_set_bit(bit, &val, MAX_EVENTS_PER_VINT) + generic_handle_domain_irq(domain, vint_desc->events[bit].hwirq); chained_irq_exit(irq_desc_get_chip(desc), desc); } diff --git a/drivers/irqchip/irq-ts4800.c b/drivers/irqchip/irq-ts4800.c index 2325fb3c482b..34337a61b1ef 100644 --- a/drivers/irqchip/irq-ts4800.c +++ b/drivers/irqchip/irq-ts4800.c @@ -79,10 +79,9 @@ static void ts4800_ic_chained_handle_irq(struct irq_desc *desc) do { unsigned int bit = __ffs(status); - int irq = irq_find_mapping(data->domain, bit); + generic_handle_domain_irq(data->domain, bit); status &= ~(1 << bit); - generic_handle_irq(irq); } while (status); out: diff --git a/drivers/irqchip/irq-versatile-fpga.c b/drivers/irqchip/irq-versatile-fpga.c index f1386733d3bc..75be350cf82f 100644 --- a/drivers/irqchip/irq-versatile-fpga.c +++ b/drivers/irqchip/irq-versatile-fpga.c @@ -85,7 +85,7 @@ static void fpga_irq_handle(struct irq_desc *desc) unsigned int irq = ffs(status) - 1; status &= ~(1 << irq); - generic_handle_irq(irq_find_mapping(f->domain, irq)); + generic_handle_domain_irq(f->domain, irq); } while (status); out: diff --git a/drivers/irqchip/irq-vic.c b/drivers/irqchip/irq-vic.c index 62f3d29f9042..1e1f2d115257 100644 --- a/drivers/irqchip/irq-vic.c +++ b/drivers/irqchip/irq-vic.c @@ -225,7 +225,7 @@ static void vic_handle_irq_cascaded(struct irq_desc *desc) while ((stat = readl_relaxed(vic->base + VIC_IRQ_STATUS))) { hwirq = ffs(stat) - 1; - generic_handle_irq(irq_find_mapping(vic->domain, hwirq)); + generic_handle_domain_irq(vic->domain, hwirq); } chained_irq_exit(host_chip, desc); diff --git a/drivers/irqchip/irq-xilinx-intc.c b/drivers/irqchip/irq-xilinx-intc.c index 8cd1bfc73057..356a59755d63 100644 --- a/drivers/irqchip/irq-xilinx-intc.c +++ b/drivers/irqchip/irq-xilinx-intc.c @@ -110,20 +110,6 @@ static struct irq_chip intc_dev = { .irq_mask_ack = intc_mask_ack, }; -static unsigned int xintc_get_irq_local(struct xintc_irq_chip *irqc) -{ - unsigned int irq = 0; - u32 hwirq; - - hwirq = xintc_read(irqc, IVR); - if (hwirq != -1U) - irq = irq_find_mapping(irqc->root_domain, hwirq); - - pr_debug("irq-xilinx: hwirq=%d, irq=%d\n", hwirq, irq); - - return irq; -} - unsigned int xintc_get_irq(void) { unsigned int irq = -1; @@ -164,15 +150,16 @@ static void xil_intc_irq_handler(struct irq_desc *desc) { struct irq_chip *chip = irq_desc_get_chip(desc); struct xintc_irq_chip *irqc; - u32 pending; irqc = irq_data_get_irq_handler_data(&desc->irq_data); chained_irq_enter(chip, desc); do { - pending = xintc_get_irq_local(irqc); - if (pending == 0) + u32 hwirq = xintc_read(irqc, IVR); + + if (hwirq == -1U) break; - generic_handle_irq(pending); + + generic_handle_domain_irq(irqc->root_domain, hwirq); } while (true); chained_irq_exit(chip, desc); } diff --git a/drivers/irqchip/qcom-irq-combiner.c b/drivers/irqchip/qcom-irq-combiner.c index aa54bfcb0433..18e696dc7f4d 100644 --- a/drivers/irqchip/qcom-irq-combiner.c +++ b/drivers/irqchip/qcom-irq-combiner.c @@ -53,7 +53,6 @@ static void combiner_handle_irq(struct irq_desc *desc) chained_irq_enter(chip, desc); for (reg = 0; reg < combiner->nregs; reg++) { - int virq; int hwirq; u32 bit; u32 status; @@ -70,10 +69,7 @@ static void combiner_handle_irq(struct irq_desc *desc) bit = __ffs(status); status &= ~(1 << bit); hwirq = irq_nr(reg, bit); - virq = irq_find_mapping(combiner->domain, hwirq); - if (virq > 0) - generic_handle_irq(virq); - + generic_handle_domain_irq(combiner->domain, hwirq); } } diff --git a/drivers/irqchip/qcom-pdc.c b/drivers/irqchip/qcom-pdc.c index 5dc63c20b67e..32d59202d408 100644 --- a/drivers/irqchip/qcom-pdc.c +++ b/drivers/irqchip/qcom-pdc.c @@ -11,9 +11,11 @@ #include <linux/irqdomain.h> #include <linux/io.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_device.h> +#include <linux/of_irq.h> #include <linux/soc/qcom/irq.h> #include <linux/spinlock.h> #include <linux/slab.h> @@ -459,4 +461,8 @@ fail: return ret; } -IRQCHIP_DECLARE(qcom_pdc, "qcom,pdc", qcom_pdc_init); +IRQCHIP_PLATFORM_DRIVER_BEGIN(qcom_pdc) +IRQCHIP_MATCH("qcom,pdc", qcom_pdc_init) +IRQCHIP_PLATFORM_DRIVER_END(qcom_pdc) +MODULE_DESCRIPTION("Qualcomm Technologies, Inc. Power Domain Controller"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mfd/ioc3.c b/drivers/mfd/ioc3.c index c73ec78f255b..99b9c113f964 100644 --- a/drivers/mfd/ioc3.c +++ b/drivers/mfd/ioc3.c @@ -14,6 +14,7 @@ #include <linux/delay.h> #include <linux/errno.h> #include <linux/interrupt.h> +#include <linux/irqdomain.h> #include <linux/mfd/core.h> #include <linux/module.h> #include <linux/pci.h> diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index 6540d48eb0e8..715c34904e3e 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -13,6 +13,7 @@ #include <linux/dmapool.h> #include <linux/delay.h> #include <linux/interrupt.h> +#include <linux/irqdomain.h> #include <linux/kthread.h> #include <linux/slab.h> #include <linux/of.h> diff --git a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c index 41ac9477df7a..10b6c6daaacd 100644 --- a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c +++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c @@ -22,6 +22,7 @@ #include <linux/list.h> #include <linux/string.h> #include <linux/delay.h> +#include <linux/of.h> #include <target/target_core_base.h> #include <target/target_core_fabric.h> diff --git a/drivers/staging/octeon-usb/octeon-hcd.c b/drivers/staging/octeon-usb/octeon-hcd.c index f27f20a4aa2d..a1cd81d4a114 100644 --- a/drivers/staging/octeon-usb/octeon-hcd.c +++ b/drivers/staging/octeon-usb/octeon-hcd.c @@ -50,8 +50,10 @@ #include <linux/module.h> #include <linux/usb/hcd.h> #include <linux/prefetch.h> +#include <linux/irqdomain.h> #include <linux/dma-mapping.h> #include <linux/platform_device.h> +#include <linux/of.h> #include <asm/octeon/octeon.h> diff --git a/drivers/watchdog/octeon-wdt-main.c b/drivers/watchdog/octeon-wdt-main.c index fde9e739b436..391c774a1f67 100644 --- a/drivers/watchdog/octeon-wdt-main.c +++ b/drivers/watchdog/octeon-wdt-main.c @@ -54,6 +54,7 @@ #include <linux/delay.h> #include <linux/cpu.h> #include <linux/irq.h> +#include <linux/irqdomain.h> #include <asm/mipsregs.h> #include <asm/uasm.h> diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 35a374241515..2ed65b01c961 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -64,6 +64,8 @@ * IRQF_NO_AUTOEN - Don't enable IRQ or NMI automatically when users request it. * Users will enable it explicitly by enable_irq() or enable_nmi() * later. + * IRQF_NO_DEBUG - Exclude from runnaway detection for IPI and similar handlers, + * depends on IRQF_PERCPU. */ #define IRQF_SHARED 0x00000080 #define IRQF_PROBE_SHARED 0x00000100 @@ -78,6 +80,7 @@ #define IRQF_EARLY_RESUME 0x00020000 #define IRQF_COND_SUSPEND 0x00040000 #define IRQF_NO_AUTOEN 0x00080000 +#define IRQF_NO_DEBUG 0x00100000 #define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND | IRQF_NO_THREAD) diff --git a/include/linux/irq.h b/include/linux/irq.h index 31b347c9f8dd..8e9a9ae471a6 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -72,6 +72,7 @@ enum irqchip_irq_state; * mechanism and from core side polling. * IRQ_DISABLE_UNLAZY - Disable lazy irq disable * IRQ_HIDDEN - Don't show up in /proc/interrupts + * IRQ_NO_DEBUG - Exclude from note_interrupt() debugging */ enum { IRQ_TYPE_NONE = 0x00000000, @@ -99,6 +100,7 @@ enum { IRQ_IS_POLLED = (1 << 18), IRQ_DISABLE_UNLAZY = (1 << 19), IRQ_HIDDEN = (1 << 20), + IRQ_NO_DEBUG = (1 << 21), }; #define IRQF_MODIFY_MASK \ diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index df4651250785..59aea39785bf 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -158,25 +158,21 @@ static inline void generic_handle_irq_desc(struct irq_desc *desc) desc->handle_irq(desc); } +int handle_irq_desc(struct irq_desc *desc); int generic_handle_irq(unsigned int irq); -#ifdef CONFIG_HANDLE_DOMAIN_IRQ +#ifdef CONFIG_IRQ_DOMAIN /* * Convert a HW interrupt number to a logical one using a IRQ domain, * and handle the result interrupt number. Return -EINVAL if - * conversion failed. Providing a NULL domain indicates that the - * conversion has already been done. + * conversion failed. */ -int __handle_domain_irq(struct irq_domain *domain, unsigned int hwirq, - bool lookup, struct pt_regs *regs); +int generic_handle_domain_irq(struct irq_domain *domain, unsigned int hwirq); -static inline int handle_domain_irq(struct irq_domain *domain, - unsigned int hwirq, struct pt_regs *regs) -{ - return __handle_domain_irq(domain, hwirq, true, regs); -} +#ifdef CONFIG_HANDLE_DOMAIN_IRQ +int handle_domain_irq(struct irq_domain *domain, + unsigned int hwirq, struct pt_regs *regs); -#ifdef CONFIG_IRQ_DOMAIN int handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq, struct pt_regs *regs); #endif diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 62a8e3d23829..23e4ee523576 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -41,13 +41,11 @@ struct fwnode_handle; struct irq_domain; struct irq_chip; struct irq_data; +struct irq_desc; struct cpumask; struct seq_file; struct irq_affinity_desc; -/* Number of irqs reserved for a legacy isa controller */ -#define NUM_ISA_INTERRUPTS 16 - #define IRQ_DOMAIN_IRQ_SPEC_PARAMS 16 /** @@ -152,11 +150,10 @@ struct irq_domain_chip_generic; * @parent: Pointer to parent irq_domain to support hierarchy irq_domains * * Revmap data, used internally by irq_domain - * @revmap_direct_max_irq: The largest hwirq that can be set for controllers that - * support direct mapping - * @revmap_size: Size of the linear map table @linear_revmap[] + * @revmap_size: Size of the linear map table @revmap[] * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map - * @linear_revmap: Linear table of hwirq->virq reverse mappings + * @revmap_mutex: Lock for the revmap + * @revmap: Linear table of irq_data pointers */ struct irq_domain { struct list_head link; @@ -176,11 +173,10 @@ struct irq_domain { /* reverse map data. The linear map gets appended to the irq_domain */ irq_hw_number_t hwirq_max; - unsigned int revmap_direct_max_irq; unsigned int revmap_size; struct radix_tree_root revmap_tree; - struct mutex revmap_tree_mutex; - unsigned int linear_revmap[]; + struct mutex revmap_mutex; + struct irq_data __rcu *revmap[]; }; /* Irq domain flags */ @@ -210,6 +206,9 @@ enum { */ IRQ_DOMAIN_MSI_NOMASK_QUIRK = (1 << 6), + /* Irq domain doesn't translate anything */ + IRQ_DOMAIN_FLAG_NO_MAP = (1 << 7), + /* * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved * for implementation specific purposes and ignored by the @@ -348,6 +347,8 @@ static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_no { return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data); } + +#ifdef CONFIG_IRQ_DOMAIN_NOMAP static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node, unsigned int max_irq, const struct irq_domain_ops *ops, @@ -355,14 +356,10 @@ static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_nod { return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data); } -static inline struct irq_domain *irq_domain_add_legacy_isa( - struct device_node *of_node, - const struct irq_domain_ops *ops, - void *host_data) -{ - return irq_domain_add_legacy(of_node, NUM_ISA_INTERRUPTS, 0, 0, ops, - host_data); -} + +extern unsigned int irq_create_direct_mapping(struct irq_domain *host); +#endif + static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node, const struct irq_domain_ops *ops, void *host_data) @@ -405,25 +402,37 @@ static inline unsigned int irq_create_mapping(struct irq_domain *host, return irq_create_mapping_affinity(host, hwirq, NULL); } +extern struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain, + irq_hw_number_t hwirq, + unsigned int *irq); + +static inline struct irq_desc *irq_resolve_mapping(struct irq_domain *domain, + irq_hw_number_t hwirq) +{ + return __irq_resolve_mapping(domain, hwirq, NULL); +} /** - * irq_linear_revmap() - Find a linux irq from a hw irq number. + * irq_find_mapping() - Find a linux irq from a hw irq number. * @domain: domain owning this hardware interrupt * @hwirq: hardware irq number in that domain space - * - * This is a fast path alternative to irq_find_mapping() that can be - * called directly by irq controller code to save a handful of - * instructions. It is always safe to call, but won't find irqs mapped - * using the radix tree. */ +static inline unsigned int irq_find_mapping(struct irq_domain *domain, + irq_hw_number_t hwirq) +{ + unsigned int irq; + + if (__irq_resolve_mapping(domain, hwirq, &irq)) + return irq; + + return 0; +} + static inline unsigned int irq_linear_revmap(struct irq_domain *domain, irq_hw_number_t hwirq) { - return hwirq < domain->revmap_size ? domain->linear_revmap[hwirq] : 0; + return irq_find_mapping(domain, hwirq); } -extern unsigned int irq_find_mapping(struct irq_domain *host, - irq_hw_number_t hwirq); -extern unsigned int irq_create_direct_mapping(struct irq_domain *host); extern const struct irq_domain_ops irq_domain_simple_ops; diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig index d79ef2493a28..fbc54c2a7f23 100644 --- a/kernel/irq/Kconfig +++ b/kernel/irq/Kconfig @@ -70,6 +70,11 @@ config IRQ_DOMAIN_HIERARCHY bool select IRQ_DOMAIN +# Support for obsolete non-mapping irq domains +config IRQ_DOMAIN_NOMAP + bool + select IRQ_DOMAIN + # Support for hierarchical fasteoi+edge and fasteoi+level handlers config IRQ_FASTEOI_HIERARCHY_HANDLERS bool diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 8cc8e5713287..7f04c7d8296e 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -481,7 +481,7 @@ void handle_nested_irq(unsigned int irq) for_each_action_of_desc(desc, action) action_ret |= action->thread_fn(action->irq, action->dev_id); - if (!noirqdebug) + if (!irq_settings_no_debug(desc)) note_interrupt(desc, action_ret); raw_spin_lock_irq(&desc->lock); diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index 762a928e18f9..221d80c31e94 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -197,7 +197,7 @@ irqreturn_t handle_irq_event_percpu(struct irq_desc *desc) add_interrupt_randomness(desc->irq_data.irq, flags); - if (!noirqdebug) + if (!irq_settings_no_debug(desc)) note_interrupt(desc, retval); return retval; } diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index 4a617d7312a4..f4dd5186858a 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -632,14 +632,8 @@ void irq_init_desc(unsigned int irq) #endif /* !CONFIG_SPARSE_IRQ */ -/** - * generic_handle_irq - Invoke the handler for a particular irq - * @irq: The irq number to handle - * - */ -int generic_handle_irq(unsigned int irq) +int handle_irq_desc(struct irq_desc *desc) { - struct irq_desc *desc = irq_to_desc(irq); struct irq_data *data; if (!desc) @@ -652,11 +646,40 @@ int generic_handle_irq(unsigned int irq) generic_handle_irq_desc(desc); return 0; } +EXPORT_SYMBOL_GPL(handle_irq_desc); + +/** + * generic_handle_irq - Invoke the handler for a particular irq + * @irq: The irq number to handle + * + */ +int generic_handle_irq(unsigned int irq) +{ + return handle_irq_desc(irq_to_desc(irq)); +} EXPORT_SYMBOL_GPL(generic_handle_irq); +#ifdef CONFIG_IRQ_DOMAIN +/** + * generic_handle_domain_irq - Invoke the handler for a HW irq belonging + * to a domain, usually for a non-root interrupt + * controller + * @domain: The domain where to perform the lookup + * @hwirq: The HW irq number to convert to a logical one + * + * Returns: 0 on success, or -EINVAL if conversion has failed + * + */ +int generic_handle_domain_irq(struct irq_domain *domain, unsigned int hwirq) +{ + return handle_irq_desc(irq_resolve_mapping(domain, hwirq)); +} +EXPORT_SYMBOL_GPL(generic_handle_domain_irq); + #ifdef CONFIG_HANDLE_DOMAIN_IRQ /** - * __handle_domain_irq - Invoke the handler for a HW irq belonging to a domain + * handle_domain_irq - Invoke the handler for a HW irq belonging to a domain, + * usually for a root interrupt controller * @domain: The domain where to perform the lookup * @hwirq: The HW irq number to convert to a logical one * @lookup: Whether to perform the domain lookup or not @@ -664,37 +687,27 @@ EXPORT_SYMBOL_GPL(generic_handle_irq); * * Returns: 0 on success, or -EINVAL if conversion has failed */ -int __handle_domain_irq(struct irq_domain *domain, unsigned int hwirq, - bool lookup, struct pt_regs *regs) +int handle_domain_irq(struct irq_domain *domain, + unsigned int hwirq, struct pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs(regs); - unsigned int irq = hwirq; + struct irq_desc *desc; int ret = 0; irq_enter(); -#ifdef CONFIG_IRQ_DOMAIN - if (lookup) - irq = irq_find_mapping(domain, hwirq); -#endif - - /* - * Some hardware gives randomly wrong interrupts. Rather - * than crashing, do something sensible. - */ - if (unlikely(!irq || irq >= nr_irqs)) { - ack_bad_irq(irq); + /* The irqdomain code provides boundary checks */ + desc = irq_resolve_mapping(domain, hwirq); + if (likely(desc)) + handle_irq_desc(desc); + else ret = -EINVAL; - } else { - generic_handle_irq(irq); - } irq_exit(); set_irq_regs(old_regs); return ret; } -#ifdef CONFIG_IRQ_DOMAIN /** * handle_domain_nmi - Invoke the handler for a HW irq belonging to a domain * @domain: The domain where to perform the lookup @@ -709,7 +722,7 @@ int handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq, struct pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs(regs); - unsigned int irq; + struct irq_desc *desc; int ret = 0; /* @@ -717,14 +730,14 @@ int handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq, */ WARN_ON(!in_nmi()); - irq = irq_find_mapping(domain, hwirq); + desc = irq_resolve_mapping(domain, hwirq); /* * ack_bad_irq is not NMI-safe, just report * an invalid interrupt. */ - if (likely(irq)) - generic_handle_irq(irq); + if (likely(desc)) + handle_irq_desc(desc); else ret = -EINVAL; diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 6284443b87ec..51c483ce2447 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -146,7 +146,11 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size, static atomic_t unknown_domains; - domain = kzalloc_node(sizeof(*domain) + (sizeof(unsigned int) * size), + if (WARN_ON((size && direct_max) || + (!IS_ENABLED(CONFIG_IRQ_DOMAIN_NOMAP) && direct_max))) + return NULL; + + domain = kzalloc_node(struct_size(domain, revmap, size), GFP_KERNEL, of_node_to_nid(to_of_node(fwnode))); if (!domain) return NULL; @@ -209,12 +213,18 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size, /* Fill structure */ INIT_RADIX_TREE(&domain->revmap_tree, GFP_KERNEL); - mutex_init(&domain->revmap_tree_mutex); + mutex_init(&domain->revmap_mutex); domain->ops = ops; domain->host_data = host_data; domain->hwirq_max = hwirq_max; + + if (direct_max) { + size = direct_max; + domain->flags |= IRQ_DOMAIN_FLAG_NO_MAP; + } + domain->revmap_size = size; - domain->revmap_direct_max_irq = direct_max; + irq_domain_check_hierarchy(domain); mutex_lock(&irq_domain_mutex); @@ -482,29 +492,39 @@ struct irq_domain *irq_get_default_host(void) return irq_default_domain; } +static bool irq_domain_is_nomap(struct irq_domain *domain) +{ + return IS_ENABLED(CONFIG_IRQ_DOMAIN_NOMAP) && + (domain->flags & IRQ_DOMAIN_FLAG_NO_MAP); +} + static void irq_domain_clear_mapping(struct irq_domain *domain, irq_hw_number_t hwirq) { - if (hwirq < domain->revmap_size) { - domain->linear_revmap[hwirq] = 0; - } else { - mutex_lock(&domain->revmap_tree_mutex); + if (irq_domain_is_nomap(domain)) + return; + + mutex_lock(&domain->revmap_mutex); + if (hwirq < domain->revmap_size) + rcu_assign_pointer(domain->revmap[hwirq], NULL); + else radix_tree_delete(&domain->revmap_tree, hwirq); - mutex_unlock(&domain->revmap_tree_mutex); - } + mutex_unlock(&domain->revmap_mutex); } static void irq_domain_set_mapping(struct irq_domain *domain, irq_hw_number_t hwirq, struct irq_data *irq_data) { - if (hwirq < domain->revmap_size) { - domain->linear_revmap[hwirq] = irq_data->irq; - } else { - mutex_lock(&domain->revmap_tree_mutex); + if (irq_domain_is_nomap(domain)) + return; + + mutex_lock(&domain->revmap_mutex); + if (hwirq < domain->revmap_size) + rcu_assign_pointer(domain->revmap[hwirq], irq_data); + else radix_tree_insert(&domain->revmap_tree, hwirq, irq_data); - mutex_unlock(&domain->revmap_tree_mutex); - } + mutex_unlock(&domain->revmap_mutex); } static void irq_domain_disassociate(struct irq_domain *domain, unsigned int irq) @@ -604,6 +624,7 @@ void irq_domain_associate_many(struct irq_domain *domain, unsigned int irq_base, } EXPORT_SYMBOL_GPL(irq_domain_associate_many); +#ifdef CONFIG_IRQ_DOMAIN_NOMAP /** * irq_create_direct_mapping() - Allocate an irq for direct mapping * @domain: domain to allocate the irq for or NULL for default domain @@ -628,9 +649,9 @@ unsigned int irq_create_direct_mapping(struct irq_domain *domain) pr_debug("create_direct virq allocation failed\n"); return 0; } - if (virq >= domain->revmap_direct_max_irq) { + if (virq >= domain->revmap_size) { pr_err("ERROR: no free irqs available below %i maximum\n", - domain->revmap_direct_max_irq); + domain->revmap_size); irq_free_desc(virq); return 0; } @@ -644,6 +665,7 @@ unsigned int irq_create_direct_mapping(struct irq_domain *domain) return virq; } EXPORT_SYMBOL_GPL(irq_create_direct_mapping); +#endif /** * irq_create_mapping_affinity() - Map a hardware interrupt into linux irq space @@ -862,37 +884,53 @@ void irq_dispose_mapping(unsigned int virq) EXPORT_SYMBOL_GPL(irq_dispose_mapping); /** - * irq_find_mapping() - Find a linux irq from a hw irq number. + * __irq_resolve_mapping() - Find a linux irq from a hw irq number. * @domain: domain owning this hardware interrupt * @hwirq: hardware irq number in that domain space + * @irq: optional pointer to return the Linux irq if required + * + * Returns the interrupt descriptor. */ -unsigned int irq_find_mapping(struct irq_domain *domain, - irq_hw_number_t hwirq) +struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain, + irq_hw_number_t hwirq, + unsigned int *irq) { + struct irq_desc *desc = NULL; struct irq_data *data; /* Look for default domain if necessary */ if (domain == NULL) domain = irq_default_domain; if (domain == NULL) - return 0; + return desc; + + if (irq_domain_is_nomap(domain)) { + if (hwirq < domain->revmap_size) { + data = irq_domain_get_irq_data(domain, hwirq); + if (data && data->hwirq == hwirq) + desc = irq_data_to_desc(data); + } - if (hwirq < domain->revmap_direct_max_irq) { - data = irq_domain_get_irq_data(domain, hwirq); - if (data && data->hwirq == hwirq) - return hwirq; + return desc; } + rcu_read_lock(); /* Check if the hwirq is in the linear revmap. */ if (hwirq < domain->revmap_size) - return domain->linear_revmap[hwirq]; + data = rcu_dereference(domain->revmap[hwirq]); + else + data = radix_tree_lookup(&domain->revmap_tree, hwirq); + + if (likely(data)) { + desc = irq_data_to_desc(data); + if (irq) + *irq = data->irq; + } - rcu_read_lock(); - data = radix_tree_lookup(&domain->revmap_tree, hwirq); rcu_read_unlock(); - return data ? data->irq : 0; + return desc; } -EXPORT_SYMBOL_GPL(irq_find_mapping); +EXPORT_SYMBOL_GPL(__irq_resolve_mapping); /** * irq_domain_xlate_onecell() - Generic xlate for direct one cell bindings @@ -1468,15 +1506,20 @@ static void irq_domain_fix_revmap(struct irq_data *d) { void __rcu **slot; - if (d->hwirq < d->domain->revmap_size) - return; /* Not using radix tree. */ + if (irq_domain_is_nomap(d->domain)) + return; /* Fix up the revmap. */ - mutex_lock(&d->domain->revmap_tree_mutex); - slot = radix_tree_lookup_slot(&d->domain->revmap_tree, d->hwirq); - if (slot) - radix_tree_replace_slot(&d->domain->revmap_tree, slot, d); - mutex_unlock(&d->domain->revmap_tree_mutex); + mutex_lock(&d->domain->revmap_mutex); + if (d->hwirq < d->domain->revmap_size) { + /* Not using radix tree */ + rcu_assign_pointer(d->domain->revmap[d->hwirq], d); + } else { + slot = radix_tree_lookup_slot(&d->domain->revmap_tree, d->hwirq); + if (slot) + radix_tree_replace_slot(&d->domain->revmap_tree, slot, d); + } + mutex_unlock(&d->domain->revmap_mutex); } /** @@ -1828,8 +1871,7 @@ static void irq_domain_debug_show_one(struct seq_file *m, struct irq_domain *d, int ind) { seq_printf(m, "%*sname: %s\n", ind, "", d->name); - seq_printf(m, "%*ssize: %u\n", ind + 1, "", - d->revmap_size + d->revmap_direct_max_irq); + seq_printf(m, "%*ssize: %u\n", ind + 1, "", d->revmap_size); seq_printf(m, "%*smapped: %u\n", ind + 1, "", d->mapcount); seq_printf(m, "%*sflags: 0x%08x\n", ind +1 , "", d->flags); if (d->ops && d->ops->debug_show) diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index a847dd2044c8..ef30b4762947 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -1717,8 +1717,13 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) if (new->flags & IRQF_PERCPU) { irqd_set(&desc->irq_data, IRQD_PER_CPU); irq_settings_set_per_cpu(desc); + if (new->flags & IRQF_NO_DEBUG) + irq_settings_set_no_debug(desc); } + if (noirqdebug) + irq_settings_set_no_debug(desc); + if (new->flags & IRQF_ONESHOT) desc->istate |= IRQS_ONESHOT; diff --git a/kernel/irq/settings.h b/kernel/irq/settings.h index 403378b9947b..7b7efb1a114b 100644 --- a/kernel/irq/settings.h +++ b/kernel/irq/settings.h @@ -18,6 +18,7 @@ enum { _IRQ_IS_POLLED = IRQ_IS_POLLED, _IRQ_DISABLE_UNLAZY = IRQ_DISABLE_UNLAZY, _IRQ_HIDDEN = IRQ_HIDDEN, + _IRQ_NO_DEBUG = IRQ_NO_DEBUG, _IRQF_MODIFY_MASK = IRQF_MODIFY_MASK, }; @@ -33,6 +34,7 @@ enum { #define IRQ_IS_POLLED GOT_YOU_MORON #define IRQ_DISABLE_UNLAZY GOT_YOU_MORON #define IRQ_HIDDEN GOT_YOU_MORON +#define IRQ_NO_DEBUG GOT_YOU_MORON #undef IRQF_MODIFY_MASK #define IRQF_MODIFY_MASK GOT_YOU_MORON @@ -174,3 +176,13 @@ static inline bool irq_settings_is_hidden(struct irq_desc *desc) { return desc->status_use_accessors & _IRQ_HIDDEN; } + +static inline void irq_settings_set_no_debug(struct irq_desc *desc) +{ + desc->status_use_accessors |= _IRQ_NO_DEBUG; +} + +static inline bool irq_settings_no_debug(struct irq_desc *desc) +{ + return desc->status_use_accessors & _IRQ_NO_DEBUG; +} |