1 /*
2 * Generic ARM Programmable Interrupt Controller support.
3 *
4 * Copyright (c) 2006 CodeSourcery.
5 * Written by Paul Brook
6 *
7 * This code is licenced under the LGPL
8 */
9
10 #include "hw.h"
11 #include "pc.h"
12 #include "arm-misc.h"
13
14 /* Stub functions for hardware that doesn't exist. */
pic_info(Monitor * mon)15 void pic_info(Monitor *mon)
16 {
17 }
18
irq_info(Monitor * mon)19 void irq_info(Monitor *mon)
20 {
21 }
22
23
24 /* Input 0 is IRQ and input 1 is FIQ. */
arm_pic_cpu_handler(void * opaque,int irq,int level)25 static void arm_pic_cpu_handler(void *opaque, int irq, int level)
26 {
27 CPUState *env = (CPUState *)opaque;
28 switch (irq) {
29 case ARM_PIC_CPU_IRQ:
30 if (level)
31 cpu_interrupt(env, CPU_INTERRUPT_HARD);
32 else
33 cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
34 break;
35 case ARM_PIC_CPU_FIQ:
36 if (level)
37 cpu_interrupt(env, CPU_INTERRUPT_FIQ);
38 else
39 cpu_reset_interrupt(env, CPU_INTERRUPT_FIQ);
40 break;
41 default:
42 hw_error("arm_pic_cpu_handler: Bad interrput line %d\n", irq);
43 }
44 }
45
arm_pic_init_cpu(CPUState * env)46 qemu_irq *arm_pic_init_cpu(CPUState *env)
47 {
48 return qemu_allocate_irqs(arm_pic_cpu_handler, env, 2);
49 }
50