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/sysbus.h" 11 12 typedef struct { 13 SysBusDevice busdev; 14 DeviceState *gic; 15 MemoryRegion container; 16 } RealViewGICState; 17 18 static void realview_gic_set_irq(void *opaque, int irq, int level) 19 { 20 RealViewGICState *s = (RealViewGICState *)opaque; 21 qemu_set_irq(qdev_get_gpio_in(s->gic, irq), level); 22 } 23 24 static int realview_gic_init(SysBusDevice *dev) 25 { 26 RealViewGICState *s = FROM_SYSBUS(RealViewGICState, dev); 27 SysBusDevice *busdev; 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 s->gic = qdev_create(NULL, "arm_gic"); 35 qdev_prop_set_uint32(s->gic, "num-cpu", 1); 36 qdev_prop_set_uint32(s->gic, "num-irq", numirq); 37 qdev_init_nofail(s->gic); 38 busdev = SYS_BUS_DEVICE(s->gic); 39 40 /* Pass through outbound IRQ lines from the GIC */ 41 sysbus_pass_irq(dev, busdev); 42 43 /* Pass through inbound GPIO lines to the GIC */ 44 qdev_init_gpio_in(&s->busdev.qdev, realview_gic_set_irq, numirq - 32); 45 46 memory_region_init(&s->container, OBJECT(s), 47 "realview-gic-container", 0x2000); 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 sysbus_init_mmio(dev, &s->container); 53 return 0; 54 } 55 56 static void realview_gic_class_init(ObjectClass *klass, void *data) 57 { 58 SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass); 59 60 sdc->init = realview_gic_init; 61 } 62 63 static const TypeInfo realview_gic_info = { 64 .name = "realview_gic", 65 .parent = TYPE_SYS_BUS_DEVICE, 66 .instance_size = sizeof(RealViewGICState), 67 .class_init = realview_gic_class_init, 68 }; 69 70 static void realview_gic_register_types(void) 71 { 72 type_register_static(&realview_gic_info); 73 } 74 75 type_init(realview_gic_register_types) 76