C++ DEVICE函数代码示例

int qmp_pc_dimm_device_list(Object *obj, void *opaque)
{
    MemoryDeviceInfoList ***prev = opaque;

    if (object_dynamic_cast(obj, TYPE_PC_DIMM)) {
        DeviceState *dev = DEVICE(obj);

        if (dev->realized) {
            MemoryDeviceInfoList *elem = g_new0(MemoryDeviceInfoList, 1);
            MemoryDeviceInfo *info = g_new0(MemoryDeviceInfo, 1);
            PCDIMMDeviceInfo *di = g_new0(PCDIMMDeviceInfo, 1);
            DeviceClass *dc = DEVICE_GET_CLASS(obj);
            PCDIMMDevice *dimm = PC_DIMM(obj);

            if (dev->id) {
                di->has_id = true;
                di->id = g_strdup(dev->id);
            }
            di->hotplugged = dev->hotplugged;
            di->hotpluggable = dc->hotpluggable;
            di->addr = dimm->addr;
            di->slot = dimm->slot;
            di->node = dimm->node;
            di->size = object_property_get_int(OBJECT(dimm), PC_DIMM_SIZE_PROP,
                                               NULL);
            di->memdev = object_get_canonical_path(OBJECT(dimm->hostmem));

            info->u.dimm.data = di;
            elem->value = info;
            elem->next = NULL;
            **prev = elem;
            *prev = &elem->next;
        }
    }

    object_child_foreach(obj, qmp_pc_dimm_device_list, opaque);
    return 0;
}

static void reset(DeviceState *d)
{
    sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(d);
    sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
    sPAPRDREntitySense state;

    trace_spapr_drc_reset(drck->get_index(drc));
    /* immediately upon reset we can safely assume DRCs whose devices
     * are pending removal can be safely removed, and that they will
     * subsequently be left in an ISOLATED state. move the DRC to this
     * state in these cases (which will in turn complete any pending
     * device removals)
     */
    if (drc->awaiting_release) {
        drck->set_isolation_state(drc, SPAPR_DR_ISOLATION_STATE_ISOLATED);
        /* generally this should also finalize the removal, but if the device
         * hasn't yet been configured we normally defer removal under the
         * assumption that this transition is taking place as part of device
         * configuration. so check if we're still waiting after this, and
         * force removal if we are
         */
        if (drc->awaiting_release) {
            drck->detach(drc, DEVICE(drc->dev), drc->detach_cb,
                         drc->detach_cb_opaque, NULL);
        }

        /* non-PCI devices may be awaiting a transition to UNUSABLE */
        if (drc->type != SPAPR_DR_CONNECTOR_TYPE_PCI &&
            drc->awaiting_release) {
            drck->set_allocation_state(drc, SPAPR_DR_ALLOCATION_STATE_UNUSABLE);
        }
    }

    drck->entity_sense(drc, &state);
    if (state == SPAPR_DR_ENTITY_SENSE_PRESENT) {
        drck->set_signalled(drc);
    }
}

static void set_vlan(Object *obj, Visitor *v, const char *name, void *opaque,
                     Error **errp)
{
    DeviceState *dev = DEVICE(obj);
    Property *prop = opaque;
    NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop);
    NetClientState **ptr = &peers_ptr->ncs[0];
    Error *local_err = NULL;
    int32_t id;
    NetClientState *hubport;

    if (dev->realized) {
        qdev_prop_set_after_realize(dev, name, errp);
        return;
    }

    visit_type_int32(v, name, &id, &local_err);
    if (local_err) {
        error_propagate(errp, local_err);
        return;
    }
    if (id == -1) {
        *ptr = NULL;
        return;
    }
    if (*ptr) {
        error_set_from_qdev_prop_error(errp, -EINVAL, dev, prop, name);
        return;
    }

    hubport = net_hub_port_find(id);
    if (!hubport) {
        error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
                   name, prop->info->name);
        return;
    }
    *ptr = hubport;
}

static void pci_piix_init_ports(PCIIDEState *d) {
    static const struct {
        int iobase;
        int iobase2;
        int isairq;
    } port_info[] = {
        {0x1f0, 0x3f6, 14},
        {0x170, 0x376, 15},
    };
    int i;

    for (i = 0; i < 2; i++) {
        ide_bus_new(&d->bus[i], sizeof(d->bus[i]), DEVICE(d), i, 2);
        ide_init_ioport(&d->bus[i], NULL, port_info[i].iobase,
                        port_info[i].iobase2);
        ide_init2(&d->bus[i], isa_get_irq(NULL, port_info[i].isairq));

        bmdma_init(&d->bus[i], &d->bmdma[i], d);
        d->bmdma[i].bus = &d->bus[i];
        qemu_add_vm_change_state_handler(d->bus[i].dma->ops->restart_cb,
                                         &d->bmdma[i].dma);
    }
}

DeviceState *qdev_try_create(BusState *bus, const char *type)
{
#if 0
    DeviceState *dev;

    if (object_class_by_name(NULL, type) == NULL) { // no need to fix. aq
        return NULL;
    }
    dev = DEVICE(object_new(NULL, type));   // no need to fix. aq
    if (!dev) {
        return NULL;
    }

    if (!bus) {
        bus = sysbus_get_default();
    }

    qdev_set_parent_bus(dev, bus);
    object_unref(OBJECT(dev));
    return dev;
#endif
    return NULL;
}

static void pci_ebus_realize(PCIDevice *pci_dev, Error **errp)
{
    EbusState *s = DO_UPCAST(EbusState, pci_dev, pci_dev);

    if (!isa_bus_new(DEVICE(pci_dev), get_system_memory(),
                     pci_address_space_io(pci_dev), errp)) {
        return;
    }

    pci_dev->config[0x04] = 0x06; // command = bus master, pci mem
    pci_dev->config[0x05] = 0x00;
    pci_dev->config[0x06] = 0xa0; // status = fast back-to-back, 66MHz, no error
    pci_dev->config[0x07] = 0x03; // status = medium devsel
    pci_dev->config[0x09] = 0x00; // programming i/f
    pci_dev->config[0x0D] = 0x0a; // latency_timer

    memory_region_init_alias(&s->bar0, OBJECT(s), "bar0", get_system_io(),
                             0, 0x1000000);
    pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar0);
    memory_region_init_alias(&s->bar1, OBJECT(s), "bar1", get_system_io(),
                             0, 0x4000);
    pci_register_bar(pci_dev, 1, PCI_BASE_ADDRESS_SPACE_IO, &s->bar1);
}

void logfile(const char *format, ...)
{
	if (__debug)
	{
		if (!debug_file)
		{
			char logpath[20];
			snprintf(logpath, MAX_CHARACTERS(logpath), "%s:/YABDM.log", DEVICE(0));
			debug_file = fopen(logpath, "a");
			if (!debug_file) return;
		}
		
		WiiDiscLight(true);
		
		va_list args;
		va_start(args, format);
		vfprintf(debug_file, format, args);
		fflush(debug_file);
		va_end(args);
		
		WiiDiscLight(false);
	}
}

int pci_piix3_xen_ide_unplug(DeviceState *dev)
{
    PCIIDEState *pci_ide;
    DriveInfo *di;
    int i = 0;

    pci_ide = PCI_IDE(dev);

    for (; i < 3; i++) {
        di = drive_get_by_index(IF_IDE, i);
        if (di != NULL && !di->media_cd) {
            DeviceState *ds = bdrv_get_attached_dev(di->bdrv);
            if (ds) {
                bdrv_detach_dev(di->bdrv, ds);
            }
            bdrv_close(di->bdrv);
            pci_ide->bus[di->bus].ifs[di->unit].bs = NULL;
            drive_del(di);
        }
    }
    qdev_reset_all(DEVICE(dev));
    return 0;
}

PCIESlot *ioh3420_init(PCIBus *bus, int devfn, bool multifunction,
                         const char *bus_name, pci_map_irq_fn map_irq,
                         uint8_t port, uint8_t chassis, uint16_t slot)
{
    PCIDevice *d;
    PCIBridge *br;
    DeviceState *qdev;

    d = pci_create_multifunction(bus, devfn, multifunction, "ioh3420");
    if (!d) {
        return NULL;
    }
    br = PCI_BRIDGE(d);

    qdev = DEVICE(d);
    pci_bridge_map_irq(br, bus_name, map_irq);
    qdev_prop_set_uint8(qdev, "port", port);
    qdev_prop_set_uint8(qdev, "chassis", chassis);
    qdev_prop_set_uint16(qdev, "slot", slot);
    qdev_init_nofail(qdev);

    return PCIE_SLOT(d);
}

static void set_chr(Object *obj, Visitor *v, const char *name, void *opaque,
                    Error **errp)
{
    DeviceState *dev = DEVICE(obj);
    Error *local_err = NULL;
    Property *prop = opaque;
    CharBackend *be = qdev_get_prop_ptr(dev, prop);
    CharDriverState *s;
    char *str;

    if (dev->realized) {
        qdev_prop_set_after_realize(dev, name, errp);
        return;
    }

    visit_type_str(v, name, &str, &local_err);
    if (local_err) {
        error_propagate(errp, local_err);
        return;
    }

    if (!*str) {
        g_free(str);
        be->chr = NULL;
        return;
    }

    s = qemu_chr_find(str);
    if (s == NULL) {
        error_setg(errp, "Property '%s.%s' can't find value '%s'",
                   object_get_typename(obj), prop->name, str);
    } else if (!qemu_chr_fe_init(be, s, errp)) {
        error_prepend(errp, "Property '%s.%s' can't take value '%s': ",
                      object_get_typename(obj), prop->name, str);
    }
    g_free(str);
}

static int raven_pcihost_init(SysBusDevice *dev)
{
    PCIHostState *h = PCI_HOST_BRIDGE(dev);
    PREPPCIState *s = RAVEN_PCI_HOST_BRIDGE(dev);
    MemoryRegion *address_space_mem = get_system_memory();
    MemoryRegion *address_space_io = get_system_io();
    PCIBus *bus;
    int i;

    for (i = 0; i < 4; i++) {
        sysbus_init_irq(dev, &s->irq[i]);
    }

    bus = pci_register_bus(DEVICE(dev), NULL,
                           prep_set_irq, prep_map_irq, s->irq,
                           address_space_mem, address_space_io, 0, 4);
    h->bus = bus;

    memory_region_init_io(&h->conf_mem, &pci_host_conf_be_ops, s,
                          "pci-conf-idx", 1);
    sysbus_add_io(dev, 0xcf8, &h->conf_mem);
    sysbus_init_ioports(&h->busdev, 0xcf8, 1);

    memory_region_init_io(&h->data_mem, &pci_host_data_be_ops, s,
                          "pci-conf-data", 1);
    sysbus_add_io(dev, 0xcfc, &h->data_mem);
    sysbus_init_ioports(&h->busdev, 0xcfc, 1);

    memory_region_init_io(&h->mmcfg, &PPC_PCIIO_ops, s, "pciio", 0x00400000);
    memory_region_add_subregion(address_space_mem, 0x80800000, &h->mmcfg);

    memory_region_init_io(&s->intack, &PPC_intack_ops, s, "pci-intack", 1);
    memory_region_add_subregion(address_space_mem, 0xbffffff0, &s->intack);
    pci_create_simple(bus, 0, "raven");

    return 0;
}

/* Context: QEMU global mutex held */
void virtio_blk_data_plane_stop(VirtIOBlockDataPlane *s)
{
    BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(s->vdev)));
    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
    VirtIOBlock *vblk = VIRTIO_BLK(s->vdev);

    if (!vblk->dataplane_started || s->stopping) {
        return;
    }

    /* Better luck next time. */
    if (s->disabled) {
        s->disabled = false;
        vblk->dataplane_started = false;
        return;
    }
    s->stopping = true;
    trace_virtio_blk_data_plane_stop(s);

    aio_context_acquire(s->ctx);

    /* Stop notifications for new requests from guest */
    virtio_queue_aio_set_host_notifier_handler(s->vq, s->ctx, false, false);

    /* Drain and switch bs back to the QEMU main loop */
    blk_set_aio_context(s->conf->conf.blk, qemu_get_aio_context());

    aio_context_release(s->ctx);

    k->set_host_notifier(qbus->parent, 0, false);

    /* Clean up guest notifier (irq) */
    k->set_guest_notifiers(qbus->parent, 1, false);

    vblk->dataplane_started = false;
    s->stopping = false;
}

/* Context: QEMU global mutex held */
void virtio_scsi_dataplane_stop(VirtIOSCSI *s)
{
    BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(s)));
    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
    VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s);
    int i;

    if (!s->dataplane_started || s->dataplane_stopping) {
        return;
    }

    /* Better luck next time. */
    if (s->dataplane_fenced) {
        s->dataplane_fenced = false;
        s->dataplane_started = false;
        return;
    }
    s->dataplane_stopping = true;
    assert(s->ctx == iothread_get_aio_context(vs->conf.iothread));

    aio_context_acquire(s->ctx);

    virtio_scsi_clear_aio(s);

    blk_drain_all(); /* ensure there are no in-flight requests */

    aio_context_release(s->ctx);

    for (i = 0; i < vs->conf.num_queues + 2; i++) {
        k->set_host_notifier(qbus->parent, i, false);
    }

    /* Clean up guest notifier (irq) */
    k->set_guest_notifiers(qbus->parent, vs->conf.num_queues + 2, false);
    s->dataplane_stopping = false;
    s->dataplane_started = false;
}

/*---------------------------------------------------------------------------
 *  Find device object by handle
 *
 *  \param dev Device handle
 *
 *  \return Matching device object or NULL
 *----------------------------------------------------------------------------*/
OWF_API_CALL WFC_DEVICE*
WFC_Device_FindByHandle(WFCDevice dev)
{
    WFCint i = 0, length = 0;
    WFC_DEVICE* pDevice = NULL;
    
    if (dev == WFC_INVALID_HANDLE)
    {
        return NULL;
    }
    
    WFC_Devices_Initialize();
    
    length = gPhyDevice.iDeviceInstanceArray.length;
    for (i = 0; i < length; ++i)
        {
        pDevice = DEVICE(OWF_Array_GetItemAt(&(gPhyDevice.iDeviceInstanceArray), i));
        if (pDevice->handle == dev)
            {
            return pDevice;
            }
        }
    return NULL;
}

static int virtio_balloon_device_init(VirtIODevice *vdev)
{
    DeviceState *qdev = DEVICE(vdev);
    VirtIOBalloon *s = VIRTIO_BALLOON(vdev);
    int ret;

    virtio_init(vdev, "virtio-balloon", VIRTIO_ID_BALLOON, 8);

    vdev->get_config = virtio_balloon_get_config;
    vdev->set_config = virtio_balloon_set_config;
    vdev->get_features = virtio_balloon_get_features;

    ret = qemu_add_balloon_handler(virtio_balloon_to_target,
                                   virtio_balloon_stat, s);

    if (ret < 0) {
        virtio_common_cleanup(VIRTIO_DEVICE(s));
        return -1;
    }

    s->ivq = virtio_add_queue(vdev, 128, virtio_balloon_handle_output);
    s->dvq = virtio_add_queue(vdev, 128, virtio_balloon_handle_output);
    s->svq = virtio_add_queue(vdev, 128, virtio_balloon_receive_stats);

    register_savevm(qdev, "virtio-balloon", -1, 1,
                    virtio_balloon_save, virtio_balloon_load, s);

    object_property_add(OBJECT(qdev), "guest-stats", "guest statistics",
                        balloon_stats_get_all, NULL, NULL, s, NULL);

    object_property_add(OBJECT(qdev), "guest-stats-polling-interval", "int",
                        balloon_stats_get_poll_interval,
                        balloon_stats_set_poll_interval,
                        NULL, s, NULL);
    return 0;
}