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/hw.h"
11 #include "hw/i386/pc.h"
12 #include "hw/arm/arm.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 CPUOldState *env = (CPUOldState *)opaque;
28 CPUState *cpu = ENV_GET_CPU(env);
29 switch (irq) {
30 case ARM_PIC_CPU_IRQ:
31 if (level)
32 cpu_interrupt(cpu, CPU_INTERRUPT_HARD);
33 else
34 cpu_reset_interrupt(cpu, CPU_INTERRUPT_HARD);
35 break;
36 case ARM_PIC_CPU_FIQ:
37 if (level)
38 cpu_interrupt(cpu, CPU_INTERRUPT_FIQ);
39 else
40 cpu_reset_interrupt(cpu, CPU_INTERRUPT_FIQ);
41 break;
42 default:
43 hw_error("arm_pic_cpu_handler: Bad interrput line %d\n", irq);
44 }
45 }
46
arm_pic_init_cpu(CPUOldState * env)47 qemu_irq *arm_pic_init_cpu(CPUOldState *env)
48 {
49 return qemu_allocate_irqs(arm_pic_cpu_handler, env, 2);
50 }
51