4
* This file is subject to the terms and conditions of the GNU General Public
5
* License. See the file "COPYING" in the main directory of this archive
8
* Copyright (C) 1995, 1996, 1997, 2003 by Ralf Baechle
10
#include <linux/kernel.h>
11
#include <linux/init.h>
12
#include <linux/irq.h>
13
#include <linux/interrupt.h>
14
#include <linux/pci.h>
16
#include <asm/i8259.h>
17
#include <asm/irq_cpu.h>
18
#include <asm/irq_gt641xx.h>
19
#include <asm/gt64120.h>
23
asmlinkage void plat_irq_dispatch(void)
25
unsigned pending = read_c0_status() & read_c0_cause() & ST0_IM;
28
if (pending & CAUSEF_IP2)
29
gt641xx_irq_dispatch();
30
else if (pending & CAUSEF_IP6) {
36
} else if (pending & CAUSEF_IP3)
37
do_IRQ(MIPS_CPU_IRQ_BASE + 3);
38
else if (pending & CAUSEF_IP4)
39
do_IRQ(MIPS_CPU_IRQ_BASE + 4);
40
else if (pending & CAUSEF_IP5)
41
do_IRQ(MIPS_CPU_IRQ_BASE + 5);
42
else if (pending & CAUSEF_IP7)
43
do_IRQ(MIPS_CPU_IRQ_BASE + 7);
48
static struct irqaction cascade = {
51
.flags = IRQF_NO_THREAD,
54
void __init arch_init_irq(void)
60
setup_irq(GT641XX_CASCADE_IRQ, &cascade);
61
setup_irq(I8259_CASCADE_IRQ, &cascade);