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
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/*
* Generic ARM Programmable Interrupt Controller support.
*
* Copyright (c) 2006 CodeSourcery.
* Written by Paul Brook
*
* This code is licensed under the LGPL
*/
#include "hw/hw.h"
#include "hw/arm-misc.h"
#include "sysemu/kvm.h"
/* Input 0 is IRQ and input 1 is FIQ. */
static void arm_pic_cpu_handler(void *opaque, int irq, int level)
{
ARMCPU *cpu = opaque;
CPUARMState *env = &cpu->env;
CPUState *cs = CPU(cpu);
switch (irq) {
case ARM_PIC_CPU_IRQ:
if (level) {
cpu_interrupt(env, CPU_INTERRUPT_HARD);
} else {
cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
}
break;
case ARM_PIC_CPU_FIQ:
if (level) {
cpu_interrupt(env, CPU_INTERRUPT_FIQ);
} else {
cpu_reset_interrupt(cs, CPU_INTERRUPT_FIQ);
}
break;
default:
hw_error("arm_pic_cpu_handler: Bad interrupt line %d\n", irq);
}
}
static void kvm_arm_pic_cpu_handler(void *opaque, int irq, int level)
{
#ifdef CONFIG_KVM
ARMCPU *cpu = opaque;
CPUState *cs = CPU(cpu);
int kvm_irq = KVM_ARM_IRQ_TYPE_CPU << KVM_ARM_IRQ_TYPE_SHIFT;
switch (irq) {
case ARM_PIC_CPU_IRQ:
kvm_irq |= KVM_ARM_IRQ_CPU_IRQ;
break;
case ARM_PIC_CPU_FIQ:
kvm_irq |= KVM_ARM_IRQ_CPU_FIQ;
break;
default:
hw_error("kvm_arm_pic_cpu_handler: Bad interrupt line %d\n", irq);
}
kvm_irq |= cs->cpu_index << KVM_ARM_IRQ_VCPU_SHIFT;
kvm_set_irq(kvm_state, kvm_irq, level ? 1 : 0);
#endif
}
qemu_irq *arm_pic_init_cpu(ARMCPU *cpu)
{
if (kvm_enabled()) {
return qemu_allocate_irqs(kvm_arm_pic_cpu_handler, cpu, 2);
}
return qemu_allocate_irqs(arm_pic_cpu_handler, cpu, 2);
}
|
