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 "qemu/osdep.h" 12 #include "hw/ipack/ipack.h" 13 14 IPackDevice *ipack_device_find(IPackBus *bus, int32_t slot) 15 { 16 BusChild *kid; 17 18 QTAILQ_FOREACH(kid, &BUS(bus)->children, sibling) { 19 DeviceState *qdev = kid->child; 20 IPackDevice *ip = IPACK_DEVICE(qdev); 21 if (ip->slot == slot) { 22 return ip; 23 } 24 } 25 return NULL; 26 } 27 28 void ipack_bus_new_inplace(IPackBus *bus, size_t bus_size, 29 DeviceState *parent, 30 const char *name, uint8_t n_slots, 31 qemu_irq_handler handler) 32 { 33 qbus_create_inplace(bus, bus_size, TYPE_IPACK_BUS, parent, name); 34 bus->n_slots = n_slots; 35 bus->set_irq = handler; 36 } 37 38 static void ipack_device_realize(DeviceState *dev, Error **errp) 39 { 40 IPackDevice *idev = IPACK_DEVICE(dev); 41 IPackBus *bus = IPACK_BUS(qdev_get_parent_bus(dev)); 42 IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev); 43 44 if (idev->slot < 0) { 45 idev->slot = bus->free_slot; 46 } 47 if (idev->slot >= bus->n_slots) { 48 error_setg(errp, "Only %" PRIu8 " slots available.", bus->n_slots); 49 return; 50 } 51 bus->free_slot = idev->slot + 1; 52 53 idev->irq = qemu_allocate_irqs(bus->set_irq, idev, 2); 54 55 k->realize(dev, errp); 56 } 57 58 static void ipack_device_unrealize(DeviceState *dev, Error **errp) 59 { 60 IPackDevice *idev = IPACK_DEVICE(dev); 61 IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev); 62 Error *err = NULL; 63 64 if (k->unrealize) { 65 k->unrealize(dev, &err); 66 error_propagate(errp, err); 67 return; 68 } 69 70 qemu_free_irqs(idev->irq, 2); 71 } 72 73 static Property ipack_device_props[] = { 74 DEFINE_PROP_INT32("slot", IPackDevice, slot, -1), 75 DEFINE_PROP_END_OF_LIST() 76 }; 77 78 static void ipack_device_class_init(ObjectClass *klass, void *data) 79 { 80 DeviceClass *k = DEVICE_CLASS(klass); 81 82 set_bit(DEVICE_CATEGORY_INPUT, k->categories); 83 k->bus_type = TYPE_IPACK_BUS; 84 k->realize = ipack_device_realize; 85 k->unrealize = ipack_device_unrealize; 86 k->props = ipack_device_props; 87 } 88 89 const VMStateDescription vmstate_ipack_device = { 90 .name = "ipack_device", 91 .version_id = 1, 92 .minimum_version_id = 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