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 "hw/intc/realview_gic.h" 12 13 static void realview_gic_set_irq(void *opaque, int irq, int level) 14 { 15 RealViewGICState *s = (RealViewGICState *)opaque; 16 17 qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level); 18 } 19 20 static void realview_gic_realize(DeviceState *dev, Error **errp) 21 { 22 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 23 RealViewGICState *s = REALVIEW_GIC(dev); 24 SysBusDevice *busdev; 25 Error *err = NULL; 26 /* The GICs on the RealView boards have a fixed nonconfigurable 27 * number of interrupt lines, so we don't need to expose this as 28 * a qdev property. 29 */ 30 int numirq = 96; 31 32 qdev_prop_set_uint32(DEVICE(&s->gic), "num-irq", numirq); 33 object_property_set_bool(OBJECT(&s->gic), true, "realized", &err); 34 if (err != NULL) { 35 error_propagate(errp, err); 36 return; 37 } 38 busdev = SYS_BUS_DEVICE(&s->gic); 39 40 /* Pass through outbound IRQ lines from the GIC */ 41 sysbus_pass_irq(sbd, busdev); 42 43 /* Pass through inbound GPIO lines to the GIC */ 44 qdev_init_gpio_in(dev, realview_gic_set_irq, numirq - 32); 45 46 memory_region_add_subregion(&s->container, 0, 47 sysbus_mmio_get_region(busdev, 1)); 48 memory_region_add_subregion(&s->container, 0x1000, 49 sysbus_mmio_get_region(busdev, 0)); 50 } 51 52 static void realview_gic_init(Object *obj) 53 { 54 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 55 RealViewGICState *s = REALVIEW_GIC(obj); 56 DeviceState *gicdev; 57 58 memory_region_init(&s->container, OBJECT(s), 59 "realview-gic-container", 0x2000); 60 sysbus_init_mmio(sbd, &s->container); 61 62 object_initialize(&s->gic, sizeof(s->gic), TYPE_ARM_GIC); 63 gicdev = DEVICE(&s->gic); 64 qdev_set_parent_bus(gicdev, sysbus_get_default()); 65 qdev_prop_set_uint32(gicdev, "num-cpu", 1); 66 } 67 68 static void realview_gic_class_init(ObjectClass *oc, void *data) 69 { 70 DeviceClass *dc = DEVICE_CLASS(oc); 71 72 dc->realize = realview_gic_realize; 73 } 74 75 static const TypeInfo realview_gic_info = { 76 .name = TYPE_REALVIEW_GIC, 77 .parent = TYPE_SYS_BUS_DEVICE, 78 .instance_size = sizeof(RealViewGICState), 79 .instance_init = realview_gic_init, 80 .class_init = realview_gic_class_init, 81 }; 82 83 static void realview_gic_register_types(void) 84 { 85 type_register_static(&realview_gic_info); 86 } 87 88 type_init(realview_gic_register_types) 89