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 "hw/intc/realview_gic.h" 11 12 static void realview_gic_set_irq(void *opaque, int irq, int level) 13 { 14 RealViewGICState *s = (RealViewGICState *)opaque; 15 16 qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level); 17 } 18 19 static void realview_gic_realize(DeviceState *dev, Error **errp) 20 { 21 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 22 RealViewGICState *s = REALVIEW_GIC(dev); 23 SysBusDevice *busdev; 24 Error *err = NULL; 25 /* The GICs on the RealView boards have a fixed nonconfigurable 26 * number of interrupt lines, so we don't need to expose this as 27 * a qdev property. 28 */ 29 int numirq = 96; 30 31 qdev_prop_set_uint32(DEVICE(&s->gic), "num-irq", numirq); 32 object_property_set_bool(OBJECT(&s->gic), true, "realized", &err); 33 if (err != NULL) { 34 error_propagate(errp, err); 35 return; 36 } 37 busdev = SYS_BUS_DEVICE(&s->gic); 38 39 /* Pass through outbound IRQ lines from the GIC */ 40 sysbus_pass_irq(sbd, busdev); 41 42 /* Pass through inbound GPIO lines to the GIC */ 43 qdev_init_gpio_in(dev, realview_gic_set_irq, numirq - 32); 44 45 memory_region_add_subregion(&s->container, 0, 46 sysbus_mmio_get_region(busdev, 1)); 47 memory_region_add_subregion(&s->container, 0x1000, 48 sysbus_mmio_get_region(busdev, 0)); 49 } 50 51 static void realview_gic_init(Object *obj) 52 { 53 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 54 RealViewGICState *s = REALVIEW_GIC(obj); 55 DeviceState *gicdev; 56 57 memory_region_init(&s->container, OBJECT(s), 58 "realview-gic-container", 0x2000); 59 sysbus_init_mmio(sbd, &s->container); 60 61 object_initialize(&s->gic, sizeof(s->gic), TYPE_ARM_GIC); 62 gicdev = DEVICE(&s->gic); 63 qdev_set_parent_bus(gicdev, sysbus_get_default()); 64 qdev_prop_set_uint32(gicdev, "num-cpu", 1); 65 } 66 67 static 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 74 static 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 82 static void realview_gic_register_types(void) 83 { 84 type_register_static(&realview_gic_info); 85 } 86 87 type_init(realview_gic_register_types) 88