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/*
* IRQ vector handles
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1995, 1996, 1997, 2003 by Ralf Baechle
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <asm/i8259.h>
#include <asm/irq_cpu.h>
#include <asm/irq_gt641xx.h>
#include <asm/gt64120.h>
#include <irq.h>
asmlinkage void plat_irq_dispatch(void)
{
unsigned pending = read_c0_status() & read_c0_cause() & ST0_IM;
int irq;
if (pending & CAUSEF_IP2)
gt641xx_irq_dispatch();
else if (pending & CAUSEF_IP6) {
irq = i8259_irq();
if (irq < 0)
spurious_interrupt();
else
do_IRQ(irq);
} else if (pending & CAUSEF_IP3)
do_IRQ(MIPS_CPU_IRQ_BASE + 3);
else if (pending & CAUSEF_IP4)
do_IRQ(MIPS_CPU_IRQ_BASE + 4);
else if (pending & CAUSEF_IP5)
do_IRQ(MIPS_CPU_IRQ_BASE + 5);
else if (pending & CAUSEF_IP7)
do_IRQ(MIPS_CPU_IRQ_BASE + 7);
else
spurious_interrupt();
}
static struct irqaction cascade = {
.handler = no_action,
.name = "cascade",
.flags = IRQF_NO_THREAD,
};
void __init arch_init_irq(void)
{
mips_cpu_irq_init();
gt641xx_irq_init();
init_i8259_irqs();
setup_irq(GT641XX_CASCADE_IRQ, &cascade);
setup_irq(I8259_CASCADE_IRQ, &cascade);
}
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