49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/*
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* Copyright 2011 Freescale Semiconductor, Inc.
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* Copyright 2011 Linaro Ltd.
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/io.h>
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#include <asm/exception.h>
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#include <asm/localtimer.h>
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#include <asm/hardware/gic.h>
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#ifdef CONFIG_SMP
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#include <asm/smp.h>
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#endif
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asmlinkage void __exception_irq_entry gic_handle_irq(struct pt_regs *regs)
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{
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u32 irqstat, irqnr;
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do {
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irqstat = readl_relaxed(gic_cpu_base_addr + GIC_CPU_INTACK);
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irqnr = irqstat & 0x3ff;
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if (irqnr == 1023)
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break;
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if (irqnr > 29 && irqnr < 1021)
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handle_IRQ(irqnr, regs);
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#ifdef CONFIG_SMP
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else if (irqnr < 16) {
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writel_relaxed(irqstat, gic_cpu_base_addr +
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GIC_CPU_EOI);
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handle_IPI(irqnr, regs);
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}
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#endif
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#ifdef CONFIG_LOCAL_TIMERS
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else if (irqnr == 29) {
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writel_relaxed(irqstat, gic_cpu_base_addr +
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GIC_CPU_EOI);
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handle_local_timer(regs);
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}
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#endif
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} while (1);
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}
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