| 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 "qemu/module.h" |
| 14 | #include "hw/ipack/ipack.h" |
| 15 | #include "hw/core/irq.h" |
| 16 | #include "hw/core/qdev-properties.h" |
| 17 | #include "migration/vmstate.h" |
| 18 | |
| 19 | IPackDevice *ipack_device_find(IPackBus *bus, int32_t slot) |
| 20 | { |
| 21 | BusChild *kid; |
| 22 | |
| 23 | QTAILQ_FOREACH(kid, &BUS(bus)->children, sibling) { |
| 24 | DeviceState *qdev = kid->child; |
| 25 | IPackDevice *ip = IPACK_DEVICE(qdev); |
| 26 | if (ip->slot == slot) { |
| 27 | return ip; |
| 28 | } |
| 29 | } |
| 30 | return NULL; |
| 31 | } |
| 32 | |
| 33 | void ipack_bus_init(IPackBus *bus, size_t bus_size, |
| 34 | DeviceState *parent, |
| 35 | uint8_t n_slots, |
| 36 | qemu_irq_handler handler) |
| 37 | { |
| 38 | qbus_init(bus, bus_size, TYPE_IPACK_BUS, parent, NULL); |
| 39 | bus->n_slots = n_slots; |
| 40 | bus->set_irq = handler; |
| 41 | } |
| 42 | |
| 43 | static void ipack_device_realize(DeviceState *dev, Error **errp) |
| 44 | { |
| 45 | IPackDevice *idev = IPACK_DEVICE(dev); |
| 46 | IPackBus *bus = IPACK_BUS(qdev_get_parent_bus(dev)); |
| 47 | IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev); |
| 48 | |
| 49 | if (idev->slot < 0) { |
| 50 | idev->slot = bus->free_slot; |
| 51 | } |
| 52 | if (idev->slot >= bus->n_slots) { |
| 53 | error_setg(errp, "Only %" PRIu8 " slots available.", bus->n_slots); |
| 54 | return; |
| 55 | } |
| 56 | bus->free_slot = idev->slot + 1; |
| 57 | |
| 58 | qemu_init_irqs(idev->irq, ARRAY_SIZE(idev->irq), bus->set_irq, idev); |
| 59 | |
| 60 | k->realize(dev, errp); |
| 61 | } |
| 62 | |
| 63 | static void ipack_device_unrealize(DeviceState *dev) |
| 64 | { |
| 65 | IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev); |
| 66 | |
| 67 | if (k->unrealize) { |
| 68 | k->unrealize(dev); |
| 69 | return; |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | static const Property ipack_device_props[] = { |
| 74 | DEFINE_PROP_INT32("slot", IPackDevice, slot, -1), |
| 75 | }; |
| 76 | |
| 77 | static void ipack_device_class_init(ObjectClass *klass, const 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 | device_class_set_props(k, 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 | .fields = (const VMStateField[]) { |
| 93 | VMSTATE_INT32(slot, IPackDevice), |
| 94 | VMSTATE_END_OF_LIST() |
| 95 | } |
| 96 | }; |
| 97 | |
| 98 | static const TypeInfo ipack_device_info = { |
| 99 | .name = TYPE_IPACK_DEVICE, |
| 100 | .parent = TYPE_DEVICE, |
| 101 | .instance_size = sizeof(IPackDevice), |
| 102 | .class_size = sizeof(IPackDeviceClass), |
| 103 | .class_init = ipack_device_class_init, |
| 104 | .abstract = true, |
| 105 | }; |
| 106 | |
| 107 | static const TypeInfo ipack_bus_info = { |
| 108 | .name = TYPE_IPACK_BUS, |
| 109 | .parent = TYPE_BUS, |
| 110 | .instance_size = sizeof(IPackBus), |
| 111 | }; |
| 112 | |
| 113 | static void ipack_register_types(void) |
| 114 | { |
| 115 | type_register_static(&ipack_device_info); |
| 116 | type_register_static(&ipack_bus_info); |
| 117 | } |
| 118 | |
| 119 | type_init(ipack_register_types) |