target-arm: Make IRQ and FIQ gpio lines on the CPU object

Now that ARMCPU is a subclass of DeviceState, we can make the
CPU's inbound IRQ and FIQ lines be simply gpio lines, which
means we can remove the odd arm_pic shim.

We retain the arm_pic_init_cpu() function as a backwards
compatibility shim layer so we can convert the board models
to get the IRQ and FIQ lines directly from the ARMCPU
object one at a time.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1375977856-25046-2-git-send-email-peter.maydell@linaro.org

1 files changed, 10 insertions, 53 deletions

diff --git a/hw/arm/pic_cpu.c b/hw/arm/pic_cpu.c
index 875280aa97..9c362735c0 100644
--- a/hw/arm/pic_cpu.c
+++ b/hw/arm/pic_cpu.c
@@ -9,60 +9,17 @@
 
 #include "hw/hw.h"
 #include "hw/arm/arm.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;
-    CPUState *cs = CPU(cpu);
-
-    switch (irq) {
-    case ARM_PIC_CPU_IRQ:
-        if (level) {
-            cpu_interrupt(cs, CPU_INTERRUPT_HARD);
-        } else {
-            cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
-        }
-        break;
-    case ARM_PIC_CPU_FIQ:
-        if (level) {
-            cpu_interrupt(cs, 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
-}
 
+/* Backwards compatibility shim; this can disappear when all
+ * board models have been updated to get IRQ and FIQ lines directly
+ * from the ARMCPU object rather than by calling this function.
+ */
 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);
+    DeviceState *dev = DEVICE(cpu);
+    qemu_irq *irqs = g_new(qemu_irq, 2);
+
+    irqs[0] = qdev_get_gpio_in(dev, ARM_CPU_IRQ);
+    irqs[1] = qdev_get_gpio_in(dev, ARM_CPU_FIQ);
+    return irqs;
 }