summaryrefslogtreecommitdiff
path: root/hw/arm_pic.c
blob: 109496528cc64dabe826d4ec884c9f038c3b1843 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
/*
 * Generic ARM Programmable Interrupt Controller support.
 *
 * Copyright (c) 2006 CodeSourcery.
 * Written by Paul Brook
 *
 * This code is licensed under the LGPL
 */

#include "hw.h"
#include "arm-misc.h"

/* Input 0 is IRQ and input 1 is FIQ.  */
static void arm_pic_cpu_handler(void *opaque, int irq, int level)
{
    CPUARMState *env = (CPUARMState *)opaque;
    switch (irq) {
    case ARM_PIC_CPU_IRQ:
        if (level)
            cpu_interrupt(env, CPU_INTERRUPT_HARD);
        else
            cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
        break;
    case ARM_PIC_CPU_FIQ:
        if (level)
            cpu_interrupt(env, CPU_INTERRUPT_FIQ);
        else
            cpu_reset_interrupt(env, CPU_INTERRUPT_FIQ);
        break;
    default:
        hw_error("arm_pic_cpu_handler: Bad interrupt line %d\n", irq);
    }
}

qemu_irq *arm_pic_init_cpu(CPUARMState *env)
{
    return qemu_allocate_irqs(arm_pic_cpu_handler, env, 2);
}