1 files changed, 87 insertions, 0 deletions
diff --git a/src/hw/intc/realview_gic.c b/src/hw/intc/realview_gic.c
new file mode 100644
index 0000000..6c81296
--- /dev/null
+++ b/src/hw/intc/realview_gic.c
@@ -0,0 +1,87 @@
+/*
+ * ARM RealView Emulation Baseboard Interrupt Controller
+ *
+ * Copyright (c) 2006-2007 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This code is licensed under the GPL.
+ */
+
+#include "hw/intc/realview_gic.h"
+
+static void realview_gic_set_irq(void *opaque, int irq, int level)
+{
+    RealViewGICState *s = (RealViewGICState *)opaque;
+
+    qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level);
+}
+
+static void realview_gic_realize(DeviceState *dev, Error **errp)
+{
+    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+    RealViewGICState *s = REALVIEW_GIC(dev);
+    SysBusDevice *busdev;
+    Error *err = NULL;
+    /* The GICs on the RealView boards have a fixed nonconfigurable
+     * number of interrupt lines, so we don't need to expose this as
+     * a qdev property.
+     */
+    int numirq = 96;
+
+    qdev_prop_set_uint32(DEVICE(&s->gic), "num-irq", numirq);
+    object_property_set_bool(OBJECT(&s->gic), true, "realized", &err);
+    if (err != NULL) {
+        error_propagate(errp, err);
+        return;
+    }
+    busdev = SYS_BUS_DEVICE(&s->gic);
+
+    /* Pass through outbound IRQ lines from the GIC */
+    sysbus_pass_irq(sbd, busdev);
+
+    /* Pass through inbound GPIO lines to the GIC */
+    qdev_init_gpio_in(dev, realview_gic_set_irq, numirq - 32);
+
+    memory_region_add_subregion(&s->container, 0,
+                                sysbus_mmio_get_region(busdev, 1));
+    memory_region_add_subregion(&s->container, 0x1000,
+                                sysbus_mmio_get_region(busdev, 0));
+}
+
+static void realview_gic_init(Object *obj)
+{
+    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+    RealViewGICState *s = REALVIEW_GIC(obj);
+    DeviceState *gicdev;
+
+    memory_region_init(&s->container, OBJECT(s),
+                       "realview-gic-container", 0x2000);
+    sysbus_init_mmio(sbd, &s->container);
+
+    object_initialize(&s->gic, sizeof(s->gic), TYPE_ARM_GIC);
+    gicdev = DEVICE(&s->gic);
+    qdev_set_parent_bus(gicdev, sysbus_get_default());
+    qdev_prop_set_uint32(gicdev, "num-cpu", 1);
+}
+
+static void realview_gic_class_init(ObjectClass *oc, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(oc);
+
+    dc->realize = realview_gic_realize;
+}
+
+static const TypeInfo realview_gic_info = {
+    .name          = TYPE_REALVIEW_GIC,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(RealViewGICState),
+    .instance_init = realview_gic_init,
+    .class_init    = realview_gic_class_init,
+};
+
+static void realview_gic_register_types(void)
+{
+    type_register_static(&realview_gic_info);
+}
+
+type_init(realview_gic_register_types)