1103643c26
This is a plain translation of assembly gic irq handler to C function for CONFIG_MULTI_IRQ_HANDLER support on imx family. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/*
|
|
* Copyright 2011 Freescale Semiconductor, Inc.
|
|
* Copyright 2011 Linaro Ltd.
|
|
*
|
|
* The code contained herein is licensed under the GNU General Public
|
|
* License. You may obtain a copy of the GNU General Public License
|
|
* Version 2 or later at the following locations:
|
|
*
|
|
* http://www.opensource.org/licenses/gpl-license.html
|
|
* http://www.gnu.org/copyleft/gpl.html
|
|
*/
|
|
|
|
#include <linux/io.h>
|
|
#include <asm/exception.h>
|
|
#include <asm/localtimer.h>
|
|
#include <asm/hardware/gic.h>
|
|
#ifdef CONFIG_SMP
|
|
#include <asm/smp.h>
|
|
#endif
|
|
|
|
asmlinkage void __exception_irq_entry gic_handle_irq(struct pt_regs *regs)
|
|
{
|
|
u32 irqstat, irqnr;
|
|
|
|
do {
|
|
irqstat = readl_relaxed(gic_cpu_base_addr + GIC_CPU_INTACK);
|
|
irqnr = irqstat & 0x3ff;
|
|
if (irqnr == 1023)
|
|
break;
|
|
|
|
if (irqnr > 29 && irqnr < 1021)
|
|
handle_IRQ(irqnr, regs);
|
|
#ifdef CONFIG_SMP
|
|
else if (irqnr < 16) {
|
|
writel_relaxed(irqstat, gic_cpu_base_addr +
|
|
GIC_CPU_EOI);
|
|
handle_IPI(irqnr, regs);
|
|
}
|
|
#endif
|
|
#ifdef CONFIG_LOCAL_TIMERS
|
|
else if (irqnr == 29) {
|
|
writel_relaxed(irqstat, gic_cpu_base_addr +
|
|
GIC_CPU_EOI);
|
|
handle_local_timer(regs);
|
|
}
|
|
#endif
|
|
} while (1);
|
|
}
|