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d60fc3892c
ACPI kernel uses MADT table for proper GIC initialization. It needs to parse GIC related subtables, collect CPU interface and distributor addresses and call driver initialization function (which is hardware abstraction agnostic). In a similar way, FDT initialize GICv1/2. NOTE: This commit allow to initialize GICv1/2 basic functionality. While now simple GICv2 init call is used, any further GIC features require generic infrastructure for proper ACPI irqchip initialization. That mechanism and stacked irqdomains to support GICv2 MSI/virtualization extension, GICv3/4 and its ITS are considered as next steps. CC: Jason Cooper <jason@lakedaemon.net> CC: Marc Zyngier <marc.zyngier@arm.com> CC: Thomas Gleixner <tglx@linutronix.de> Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Tested-by: Yijing Wang <wangyijing@huawei.com> Tested-by: Mark Langsdorf <mlangsdo@redhat.com> Tested-by: Jon Masters <jcm@redhat.com> Tested-by: Timur Tabi <timur@codeaurora.org> Tested-by: Robert Richter <rrichter@cavium.com> Acked-by: Robert Richter <rrichter@cavium.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Reviewed-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
25 lines
504 B
C
25 lines
504 B
C
#ifndef __ASM_IRQ_H
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#define __ASM_IRQ_H
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#include <linux/irqchip/arm-gic-acpi.h>
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#include <asm-generic/irq.h>
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struct pt_regs;
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extern void migrate_irqs(void);
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extern void set_handle_irq(void (*handle_irq)(struct pt_regs *));
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static inline void acpi_irq_init(void)
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{
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/*
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* Hardcode ACPI IRQ chip initialization to GICv2 for now.
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* Proper irqchip infrastructure will be implemented along with
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* incoming GICv2m|GICv3|ITS bits.
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*/
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acpi_gic_init();
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}
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#define acpi_irq_init acpi_irq_init
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#endif
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