#include <linux/init.h> | |
#include <linux/linkage.h> | |
#include <asm/i8259.h> | |
#include <asm/irq_cpu.h> | |
#include <asm/mipsregs.h> | |
#include <asm/qemu.h> | |
#include <asm/system.h> | |
#include <asm/time.h> | |
asmlinkage void plat_irq_dispatch(void) | |
{ | |
unsigned int pending = read_c0_status() & read_c0_cause(); | |
if (pending & 0x8000) { | |
do_IRQ(Q_COUNT_COMPARE_IRQ); | |
return; | |
} | |
if (pending & 0x0400) { | |
int irq = i8259_irq(); | |
if (likely(irq >= 0)) | |
do_IRQ(irq); | |
return; | |
} | |
} | |
void __init arch_init_irq(void) | |
{ | |
mips_hpt_frequency = QEMU_C0_COUNTER_CLOCK; /* 100MHz */ | |
mips_cpu_irq_init(); | |
init_i8259_irqs(); | |
set_c0_status(0x8400); | |
} |