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 #include "hw/intc/arm_gic.h" 12 13 #define TYPE_REALVIEW_GIC "realview_gic" 14 #define REALVIEW_GIC(obj) \ 15 OBJECT_CHECK(RealViewGICState, (obj), TYPE_REALVIEW_GIC) 16 17 typedef struct RealViewGICState { 18 SysBusDevice parent_obj; 19 20 MemoryRegion container; 21 22 GICState gic; 23 } RealViewGICState; 24 25 static void realview_gic_set_irq(void *opaque, int irq, int level) 26 { 27 RealViewGICState *s = (RealViewGICState *)opaque; 28 29 qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level); 30 } 31 32 static void realview_gic_realize(DeviceState *dev, Error **errp) 33 { 34 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 35 RealViewGICState *s = REALVIEW_GIC(dev); 36 SysBusDevice *busdev; 37 Error *err = NULL; 38 /* The GICs on the RealView boards have a fixed nonconfigurable 39 * number of interrupt lines, so we don't need to expose this as 40 * a qdev property. 41 */ 42 int numirq = 96; 43 44 qdev_prop_set_uint32(DEVICE(&s->gic), "num-irq", numirq); 45 object_property_set_bool(OBJECT(&s->gic), true, "realized", &err); 46 if (err != NULL) { 47 error_propagate(errp, err); 48 return; 49 } 50 busdev = SYS_BUS_DEVICE(&s->gic); 51 52 /* Pass through outbound IRQ lines from the GIC */ 53 sysbus_pass_irq(sbd, busdev); 54 55 /* Pass through inbound GPIO lines to the GIC */ 56 qdev_init_gpio_in(dev, realview_gic_set_irq, numirq - 32); 57 58 memory_region_add_subregion(&s->container, 0, 59 sysbus_mmio_get_region(busdev, 1)); 60 memory_region_add_subregion(&s->container, 0x1000, 61 sysbus_mmio_get_region(busdev, 0)); 62 } 63 64 static void realview_gic_init(Object *obj) 65 { 66 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 67 RealViewGICState *s = REALVIEW_GIC(obj); 68 DeviceState *gicdev; 69 70 memory_region_init(&s->container, OBJECT(s), 71 "realview-gic-container", 0x2000); 72 sysbus_init_mmio(sbd, &s->container); 73 74 object_initialize(&s->gic, sizeof(s->gic), TYPE_ARM_GIC); 75 gicdev = DEVICE(&s->gic); 76 qdev_set_parent_bus(gicdev, sysbus_get_default()); 77 qdev_prop_set_uint32(gicdev, "num-cpu", 1); 78 } 79 80 static void realview_gic_class_init(ObjectClass *oc, void *data) 81 { 82 DeviceClass *dc = DEVICE_CLASS(oc); 83 84 dc->realize = realview_gic_realize; 85 } 86 87 static const TypeInfo realview_gic_info = { 88 .name = TYPE_REALVIEW_GIC, 89 .parent = TYPE_SYS_BUS_DEVICE, 90 .instance_size = sizeof(RealViewGICState), 91 .instance_init = realview_gic_init, 92 .class_init = realview_gic_class_init, 93 }; 94 95 static void realview_gic_register_types(void) 96 { 97 type_register_static(&realview_gic_info); 98 } 99 100 type_init(realview_gic_register_types) 101