1 /* 2 * QEMU IndustryPack emulation 3 * 4 * Copyright (C) 2012 Igalia, S.L. 5 * Author: Alberto Garcia <agarcia@igalia.com> 6 * 7 * This code is licensed under the GNU GPL v2 or (at your option) any 8 * later version. 9 */ 10 11 #include "hw/ipack/ipack.h" 12 13 IPackDevice *ipack_device_find(IPackBus *bus, int32_t slot) 14 { 15 BusChild *kid; 16 17 QTAILQ_FOREACH(kid, &BUS(bus)->children, sibling) { 18 DeviceState *qdev = kid->child; 19 IPackDevice *ip = IPACK_DEVICE(qdev); 20 if (ip->slot == slot) { 21 return ip; 22 } 23 } 24 return NULL; 25 } 26 27 void ipack_bus_new_inplace(IPackBus *bus, size_t bus_size, 28 DeviceState *parent, 29 const char *name, uint8_t n_slots, 30 qemu_irq_handler handler) 31 { 32 qbus_create_inplace(bus, bus_size, TYPE_IPACK_BUS, parent, name); 33 bus->n_slots = n_slots; 34 bus->set_irq = handler; 35 } 36 37 static void ipack_device_realize(DeviceState *dev, Error **errp) 38 { 39 IPackDevice *idev = IPACK_DEVICE(dev); 40 IPackBus *bus = IPACK_BUS(qdev_get_parent_bus(dev)); 41 IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev); 42 43 if (idev->slot < 0) { 44 idev->slot = bus->free_slot; 45 } 46 if (idev->slot >= bus->n_slots) { 47 error_setg(errp, "Only %" PRIu8 " slots available.", bus->n_slots); 48 return; 49 } 50 bus->free_slot = idev->slot + 1; 51 52 idev->irq = qemu_allocate_irqs(bus->set_irq, idev, 2); 53 54 k->realize(dev, errp); 55 } 56 57 static void ipack_device_unrealize(DeviceState *dev, Error **errp) 58 { 59 IPackDevice *idev = IPACK_DEVICE(dev); 60 IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev); 61 Error *err = NULL; 62 63 if (k->unrealize) { 64 k->unrealize(dev, &err); 65 error_propagate(errp, err); 66 return; 67 } 68 69 qemu_free_irqs(idev->irq); 70 } 71 72 static Property ipack_device_props[] = { 73 DEFINE_PROP_INT32("slot", IPackDevice, slot, -1), 74 DEFINE_PROP_END_OF_LIST() 75 }; 76 77 static void ipack_device_class_init(ObjectClass *klass, void *data) 78 { 79 DeviceClass *k = DEVICE_CLASS(klass); 80 81 set_bit(DEVICE_CATEGORY_INPUT, k->categories); 82 k->bus_type = TYPE_IPACK_BUS; 83 k->realize = ipack_device_realize; 84 k->unrealize = ipack_device_unrealize; 85 k->props = ipack_device_props; 86 } 87 88 const VMStateDescription vmstate_ipack_device = { 89 .name = "ipack_device", 90 .version_id = 1, 91 .minimum_version_id = 1, 92 .minimum_version_id_old = 1, 93 .fields = (VMStateField[]) { 94 VMSTATE_INT32(slot, IPackDevice), 95 VMSTATE_END_OF_LIST() 96 } 97 }; 98 99 static const TypeInfo ipack_device_info = { 100 .name = TYPE_IPACK_DEVICE, 101 .parent = TYPE_DEVICE, 102 .instance_size = sizeof(IPackDevice), 103 .class_size = sizeof(IPackDeviceClass), 104 .class_init = ipack_device_class_init, 105 .abstract = true, 106 }; 107 108 static const TypeInfo ipack_bus_info = { 109 .name = TYPE_IPACK_BUS, 110 .parent = TYPE_BUS, 111 .instance_size = sizeof(IPackBus), 112 }; 113 114 static void ipack_register_types(void) 115 { 116 type_register_static(&ipack_device_info); 117 type_register_static(&ipack_bus_info); 118 } 119 120 type_init(ipack_register_types) 121