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51 lines
1.2 KiB
51 lines
1.2 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2011-12 Synopsys, Inc. (www.synopsys.com) |
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*/ |
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#include <linux/interrupt.h> |
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#include <linux/irqchip.h> |
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#include <asm/mach_desc.h> |
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#include <asm/irq_regs.h> |
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#include <asm/smp.h> |
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/* |
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* Late Interrupt system init called from start_kernel for Boot CPU only |
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* |
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* Since slab must already be initialized, platforms can start doing any |
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* needed request_irq( )s |
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*/ |
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void __init init_IRQ(void) |
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{ |
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/* |
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* process the entire interrupt tree in one go |
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* Any external intc will be setup provided DT chains them |
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* properly |
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*/ |
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irqchip_init(); |
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#ifdef CONFIG_SMP |
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/* a SMP H/w block could do IPI IRQ request here */ |
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if (plat_smp_ops.init_per_cpu) |
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plat_smp_ops.init_per_cpu(smp_processor_id()); |
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#endif |
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if (machine_desc->init_per_cpu) |
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machine_desc->init_per_cpu(smp_processor_id()); |
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} |
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/* |
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* "C" Entry point for any ARC ISR, called from low level vector handler |
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* @irq is the vector number read from ICAUSE reg of on-chip intc |
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*/ |
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void arch_do_IRQ(unsigned int hwirq, struct pt_regs *regs) |
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{ |
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struct pt_regs *old_regs; |
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irq_enter(); |
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old_regs = set_irq_regs(regs); |
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generic_handle_domain_irq(NULL, hwirq); |
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set_irq_regs(old_regs); |
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irq_exit(); |
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}
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