1 /* 2 * QEMU IndustryPack emulation 3 * 4 * Copyright (C) 2012 Igalia, S.L. 5 * Author: Alberto Garcia <berto@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 "qapi/error.h" 13 #include "hw/ipack/ipack.h" 14 15 IPackDevice *ipack_device_find(IPackBus *bus, int32_t slot) 16 { 17 BusChild *kid; 18 19 QTAILQ_FOREACH(kid, &BUS(bus)->children, sibling) { 20 DeviceState *qdev = kid->child; 21 IPackDevice *ip = IPACK_DEVICE(qdev); 22 if (ip->slot == slot) { 23 return ip; 24 } 25 } 26 return NULL; 27 } 28 29 void ipack_bus_new_inplace(IPackBus *bus, size_t bus_size, 30 DeviceState *parent, 31 const char *name, uint8_t n_slots, 32 qemu_irq_handler handler) 33 { 34 qbus_create_inplace(bus, bus_size, TYPE_IPACK_BUS, parent, name); 35 bus->n_slots = n_slots; 36 bus->set_irq = handler; 37 } 38 39 static void ipack_device_realize(DeviceState *dev, Error **errp) 40 { 41 IPackDevice *idev = IPACK_DEVICE(dev); 42 IPackBus *bus = IPACK_BUS(qdev_get_parent_bus(dev)); 43 IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev); 44 45 if (idev->slot < 0) { 46 idev->slot = bus->free_slot; 47 } 48 if (idev->slot >= bus->n_slots) { 49 error_setg(errp, "Only %" PRIu8 " slots available.", bus->n_slots); 50 return; 51 } 52 bus->free_slot = idev->slot + 1; 53 54 idev->irq = qemu_allocate_irqs(bus->set_irq, idev, 2); 55 56 k->realize(dev, errp); 57 } 58 59 static void ipack_device_unrealize(DeviceState *dev, Error **errp) 60 { 61 IPackDevice *idev = IPACK_DEVICE(dev); 62 IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev); 63 Error *err = NULL; 64 65 if (k->unrealize) { 66 k->unrealize(dev, &err); 67 error_propagate(errp, err); 68 return; 69 } 70 71 qemu_free_irqs(idev->irq, 2); 72 } 73 74 static Property ipack_device_props[] = { 75 DEFINE_PROP_INT32("slot", IPackDevice, slot, -1), 76 DEFINE_PROP_END_OF_LIST() 77 }; 78 79 static void ipack_device_class_init(ObjectClass *klass, void *data) 80 { 81 DeviceClass *k = DEVICE_CLASS(klass); 82 83 set_bit(DEVICE_CATEGORY_INPUT, k->categories); 84 k->bus_type = TYPE_IPACK_BUS; 85 k->realize = ipack_device_realize; 86 k->unrealize = ipack_device_unrealize; 87 k->props = ipack_device_props; 88 } 89 90 const VMStateDescription vmstate_ipack_device = { 91 .name = "ipack_device", 92 .version_id = 1, 93 .minimum_version_id = 1, 94 .fields = (VMStateField[]) { 95 VMSTATE_INT32(slot, IPackDevice), 96 VMSTATE_END_OF_LIST() 97 } 98 }; 99 100 static const TypeInfo ipack_device_info = { 101 .name = TYPE_IPACK_DEVICE, 102 .parent = TYPE_DEVICE, 103 .instance_size = sizeof(IPackDevice), 104 .class_size = sizeof(IPackDeviceClass), 105 .class_init = ipack_device_class_init, 106 .abstract = true, 107 }; 108 109 static const TypeInfo ipack_bus_info = { 110 .name = TYPE_IPACK_BUS, 111 .parent = TYPE_BUS, 112 .instance_size = sizeof(IPackBus), 113 }; 114 115 static void ipack_register_types(void) 116 { 117 type_register_static(&ipack_device_info); 118 type_register_static(&ipack_bus_info); 119 } 120 121 type_init(ipack_register_types) 122