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 "hw/intc/realview_gic.h" 13 14 static void realview_gic_set_irq(void *opaque, int irq, int level) 15 { 16 RealViewGICState *s = (RealViewGICState *)opaque; 17 18 qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level); 19 } 20 21 static void realview_gic_realize(DeviceState *dev, Error **errp) 22 { 23 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 24 RealViewGICState *s = REALVIEW_GIC(dev); 25 SysBusDevice *busdev; 26 Error *err = NULL; 27 /* The GICs on the RealView boards have a fixed nonconfigurable 28 * number of interrupt lines, so we don't need to expose this as 29 * a qdev property. 30 */ 31 int numirq = 96; 32 33 qdev_prop_set_uint32(DEVICE(&s->gic), "num-irq", numirq); 34 object_property_set_bool(OBJECT(&s->gic), true, "realized", &err); 35 if (err != NULL) { 36 error_propagate(errp, err); 37 return; 38 } 39 busdev = SYS_BUS_DEVICE(&s->gic); 40 41 /* Pass through outbound IRQ lines from the GIC */ 42 sysbus_pass_irq(sbd, busdev); 43 44 /* Pass through inbound GPIO lines to the GIC */ 45 qdev_init_gpio_in(dev, realview_gic_set_irq, numirq - 32); 46 47 memory_region_add_subregion(&s->container, 0, 48 sysbus_mmio_get_region(busdev, 1)); 49 memory_region_add_subregion(&s->container, 0x1000, 50 sysbus_mmio_get_region(busdev, 0)); 51 } 52 53 static void realview_gic_init(Object *obj) 54 { 55 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 56 RealViewGICState *s = REALVIEW_GIC(obj); 57 DeviceState *gicdev; 58 59 memory_region_init(&s->container, OBJECT(s), 60 "realview-gic-container", 0x2000); 61 sysbus_init_mmio(sbd, &s->container); 62 63 object_initialize(&s->gic, sizeof(s->gic), TYPE_ARM_GIC); 64 gicdev = DEVICE(&s->gic); 65 qdev_set_parent_bus(gicdev, sysbus_get_default()); 66 qdev_prop_set_uint32(gicdev, "num-cpu", 1); 67 } 68 69 static void realview_gic_class_init(ObjectClass *oc, void *data) 70 { 71 DeviceClass *dc = DEVICE_CLASS(oc); 72 73 dc->realize = realview_gic_realize; 74 } 75 76 static const TypeInfo realview_gic_info = { 77 .name = TYPE_REALVIEW_GIC, 78 .parent = TYPE_SYS_BUS_DEVICE, 79 .instance_size = sizeof(RealViewGICState), 80 .instance_init = realview_gic_init, 81 .class_init = realview_gic_class_init, 82 }; 83 84 static void realview_gic_register_types(void) 85 { 86 type_register_static(&realview_gic_info); 87 } 88 89 type_init(realview_gic_register_types) 90