static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base)
{
SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev);
SCSIDeviceInfo *info = DO_UPCAST(SCSIDeviceInfo, qdev, base);
SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
int rc = -1;
if (dev->id == -1) {
for (dev->id = 0; dev->id < bus->ndev; dev->id++) {
if (bus->devs[dev->id] == NULL)
break;
}
}
if (dev->id >= bus->ndev) {
qemu_error("bad scsi device id: %d\n", dev->id);
goto err;
}
if (bus->devs[dev->id]) {
qdev_free(&bus->devs[dev->id]->qdev);
}
bus->devs[dev->id] = dev;
dev->info = info;
rc = dev->info->init(dev);
if (rc != 0) {
bus->devs[dev->id] = NULL;
}
err:
return rc;
}
static void unplug_nic(PCIBus *b, PCIDevice *d, void *o)
{
/* We have to ignore passthrough devices */
if (pci_get_word(d->config + PCI_CLASS_DEVICE) ==
PCI_CLASS_NETWORK_ETHERNET
&& strcmp(d->name, "xen-pci-passthrough") != 0) {
qdev_free(&d->qdev);
}
}
static void unplug_nic(PCIBus *b, PCIDevice *d)
{
if (pci_get_word(d->config + PCI_CLASS_DEVICE) ==
PCI_CLASS_NETWORK_ETHERNET) {
/* Until qdev_free includes a call to object_unparent, we call it here
*/
object_unparent(&d->qdev.parent_obj);
qdev_free(&d->qdev);
}
}
/* Destroy the VirtIODevice */
void virtio_bus_destroy_device(VirtioBusState *bus)
{
DeviceState *qdev;
BusState *qbus = BUS(bus);
VirtioBusClass *klass = VIRTIO_BUS_GET_CLASS(bus);
DPRINTF("%s: remove device.\n", qbus->name);
if (bus->vdev != NULL) {
if (klass->device_unplug != NULL) {
klass->device_unplug(qbus->parent);
}
qdev = DEVICE(bus->vdev);
qdev_free(qdev);
bus->vdev = NULL;
}
}
static int virtio_ccw_busdev_unplug(DeviceState *dev)
{
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
SubchDev *sch = _dev->sch;
/*
* We should arrive here only for device_del, since we don't support
* direct hot(un)plug of channels, but only through virtio.
*/
assert(sch != NULL);
/* Subchannel is now disabled and no longer valid. */
sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA |
PMCW_FLAGS_MASK_DNV);
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0);
qdev_free(dev);
return 0;
}
static int pcie_cap_slot_hotplug(DeviceState *qdev,
PCIDevice *pci_dev, PCIHotplugState state)
{
PCIDevice *d = PCI_DEVICE(qdev);
uint8_t *exp_cap = d->config + d->exp.exp_cap;
uint16_t sltsta = pci_get_word(exp_cap + PCI_EXP_SLTSTA);
/* Don't send event when device is enabled during qemu machine creation:
* it is present on boot, no hotplug event is necessary. We do send an
* event when the device is disabled later. */
if (state == PCI_COLDPLUG_ENABLED) {
pci_word_test_and_set_mask(exp_cap + PCI_EXP_SLTSTA,
PCI_EXP_SLTSTA_PDS);
return 0;
}
PCIE_DEV_PRINTF(pci_dev, "hotplug state: %d\n", state);
if (sltsta & PCI_EXP_SLTSTA_EIS) {
/* the slot is electromechanically locked.
* This error is propagated up to qdev and then to HMP/QMP.
*/
return -EBUSY;
}
/* TODO: multifunction hot-plug.
* Right now, only a device of function = 0 is allowed to be
* hot plugged/unplugged.
*/
assert(PCI_FUNC(pci_dev->devfn) == 0);
if (state == PCI_HOTPLUG_ENABLED) {
pci_word_test_and_set_mask(exp_cap + PCI_EXP_SLTSTA,
PCI_EXP_SLTSTA_PDS);
pcie_cap_slot_event(d, PCI_EXP_HP_EV_PDC);
} else {
qdev_free(&pci_dev->qdev);
pci_word_test_and_clear_mask(exp_cap + PCI_EXP_SLTSTA,
PCI_EXP_SLTSTA_PDS);
pcie_cap_slot_event(d, PCI_EXP_HP_EV_PDC);
}
return 0;
}
/* handle legacy '-drive if=scsi,...' cmd line args */
SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv,
int unit, bool removable)
{
const char *driver;
DeviceState *dev;
driver = bdrv_is_sg(bdrv) ? "scsi-generic" : "scsi-disk";
dev = qdev_create(&bus->qbus, driver);
qdev_prop_set_uint32(dev, "scsi-id", unit);
if (qdev_prop_exists(dev, "removable")) {
qdev_prop_set_bit(dev, "removable", removable);
}
if (qdev_prop_set_drive(dev, "drive", bdrv) < 0) {
qdev_free(dev);
return NULL;
}
if (qdev_init(dev) < 0)
return NULL;
return DO_UPCAST(SCSIDevice, qdev, dev);
}
static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
const char *devaddr,
const char *opts)
{
PCIDevice *dev;
DriveInfo *dinfo = NULL;
int type = -1;
char buf[128];
PCIBus *bus;
int devfn;
if (get_param_value(buf, sizeof(buf), "if", opts)) {
if (!strcmp(buf, "scsi"))
type = IF_SCSI;
else if (!strcmp(buf, "virtio")) {
type = IF_VIRTIO;
} else {
monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
return NULL;
}
} else {
monitor_printf(mon, "no if= specified\n");
return NULL;
}
if (get_param_value(buf, sizeof(buf), "file", opts)) {
dinfo = add_init_drive(opts);
if (!dinfo)
return NULL;
if (dinfo->devaddr) {
monitor_printf(mon, "Parameter addr not supported\n");
return NULL;
}
} else {
dinfo = NULL;
}
bus = pci_get_bus_devfn(&devfn, devaddr);
if (!bus) {
monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
return NULL;
}
if (!((BusState*)bus)->allow_hotplug) {
monitor_printf(mon, "PCI bus doesn't support hotplug\n");
return NULL;
}
switch (type) {
case IF_SCSI:
dev = pci_create(bus, devfn, "lsi53c895a");
if (qdev_init(&dev->qdev) < 0)
dev = NULL;
if (dev && dinfo) {
if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
qdev_unplug(&dev->qdev, NULL);
dev = NULL;
}
}
break;
case IF_VIRTIO:
if (!dinfo) {
monitor_printf(mon, "virtio requires a backing file/device.\n");
return NULL;
}
dev = pci_create(bus, devfn, "virtio-blk-pci");
if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
qdev_free(&dev->qdev);
dev = NULL;
break;
}
if (qdev_init(&dev->qdev) < 0)
dev = NULL;
break;
default:
dev = NULL;
}
return dev;
}