LXR qemu/hw/intc/realview

   1/*
   2 * ARM RealView Emulation Baseboard Interrupt Controller
   3 *
   4 * Copyright (c) 2006-2007 CodeSourcery.
   5 * Written by Paul Brook
   6 *
   7 * This code is licensed under the GPL.
   8 */
   9
  10#include "qemu/osdep.h"
  11#include "qapi/error.h"
  12#include "qemu/module.h"
  13#include "hw/intc/realview_gic.h"
  14
  15static void realview_gic_set_irq(void *opaque, int irq, int level)
  16{
  17    RealViewGICState *s = (RealViewGICState *)opaque;
  18
  19    qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level);
  20}
  21
  22static void realview_gic_realize(DeviceState *dev, Error **errp)
  23{
  24    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
  25    RealViewGICState *s = REALVIEW_GIC(dev);
  26    SysBusDevice *busdev;
  27    Error *err = NULL;
  28    /* The GICs on the RealView boards have a fixed nonconfigurable
  29     * number of interrupt lines, so we don't need to expose this as
  30     * a qdev property.
  31     */
  32    int numirq = 96;
  33
  34    qdev_prop_set_uint32(DEVICE(&s->gic), "num-irq", numirq);
  35    object_property_set_bool(OBJECT(&s->gic), true, "realized", &err);
  36    if (err != NULL) {
  37        error_propagate(errp, err);
  38        return;
  39    }
  40    busdev = SYS_BUS_DEVICE(&s->gic);
  41
  42    /* Pass through outbound IRQ lines from the GIC */
  43    sysbus_pass_irq(sbd, busdev);
  44
  45    /* Pass through inbound GPIO lines to the GIC */
  46    qdev_init_gpio_in(dev, realview_gic_set_irq, numirq - 32);
  47
  48    memory_region_add_subregion(&s->container, 0,
  49                                sysbus_mmio_get_region(busdev, 1));
  50    memory_region_add_subregion(&s->container, 0x1000,
  51                                sysbus_mmio_get_region(busdev, 0));
  52}
  53
  54static void realview_gic_init(Object *obj)
  55{
  56    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
  57    RealViewGICState *s = REALVIEW_GIC(obj);
  58
  59    memory_region_init(&s->container, OBJECT(s),
  60                       "realview-gic-container", 0x2000);
  61    sysbus_init_mmio(sbd, &s->container);
  62
  63    sysbus_init_child_obj(obj, "gic", &s->gic, sizeof(s->gic), TYPE_ARM_GIC);
  64    qdev_prop_set_uint32(DEVICE(&s->gic), "num-cpu", 1);
  65}
  66
  67static void realview_gic_class_init(ObjectClass *oc, void *data)
  68{
  69    DeviceClass *dc = DEVICE_CLASS(oc);
  70
  71    dc->realize = realview_gic_realize;
  72}
  73
  74static const TypeInfo realview_gic_info = {
  75    .name          = TYPE_REALVIEW_GIC,
  76    .parent        = TYPE_SYS_BUS_DEVICE,
  77    .instance_size = sizeof(RealViewGICState),
  78    .instance_init = realview_gic_init,
  79    .class_init    = realview_gic_class_init,
  80};
  81
  82static void realview_gic_register_types(void)
  83{
  84    type_register_static(&realview_gic_info);
  85}
  86
  87type_init(realview_gic_register_types)
  88