diff options
Diffstat (limited to 'hw/virtio/virtio-pci.c')
-rw-r--r-- | hw/virtio/virtio-pci.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index f55dd2bf8e..ab2a372aa4 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -86,6 +86,129 @@ static void virtio_pci_save_config(DeviceState *d, QEMUFile *f) qemu_put_be16(f, vdev->config_vector); } +static void virtio_pci_load_modern_queue_state(VirtIOPCIQueue *vq, + QEMUFile *f) +{ + vq->num = qemu_get_be16(f); + vq->enabled = qemu_get_be16(f); + vq->desc[0] = qemu_get_be32(f); + vq->desc[1] = qemu_get_be32(f); + vq->avail[0] = qemu_get_be32(f); + vq->avail[1] = qemu_get_be32(f); + vq->used[0] = qemu_get_be32(f); + vq->used[1] = qemu_get_be32(f); +} + +static bool virtio_pci_has_extra_state(DeviceState *d) +{ + VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); + + return proxy->flags & VIRTIO_PCI_FLAG_MIGRATE_EXTRA; +} + +static int get_virtio_pci_modern_state(QEMUFile *f, void *pv, size_t size) +{ + VirtIOPCIProxy *proxy = pv; + int i; + + proxy->dfselect = qemu_get_be32(f); + proxy->gfselect = qemu_get_be32(f); + proxy->guest_features[0] = qemu_get_be32(f); + proxy->guest_features[1] = qemu_get_be32(f); + for (i = 0; i < VIRTIO_QUEUE_MAX; i++) { + virtio_pci_load_modern_queue_state(&proxy->vqs[i], f); + } + + return 0; +} + +static void virtio_pci_save_modern_queue_state(VirtIOPCIQueue *vq, + QEMUFile *f) +{ + qemu_put_be16(f, vq->num); + qemu_put_be16(f, vq->enabled); + qemu_put_be32(f, vq->desc[0]); + qemu_put_be32(f, vq->desc[1]); + qemu_put_be32(f, vq->avail[0]); + qemu_put_be32(f, vq->avail[1]); + qemu_put_be32(f, vq->used[0]); + qemu_put_be32(f, vq->used[1]); +} + +static void put_virtio_pci_modern_state(QEMUFile *f, void *pv, size_t size) +{ + VirtIOPCIProxy *proxy = pv; + int i; + + qemu_put_be32(f, proxy->dfselect); + qemu_put_be32(f, proxy->gfselect); + qemu_put_be32(f, proxy->guest_features[0]); + qemu_put_be32(f, proxy->guest_features[1]); + for (i = 0; i < VIRTIO_QUEUE_MAX; i++) { + virtio_pci_save_modern_queue_state(&proxy->vqs[i], f); + } +} + +static const VMStateInfo vmstate_info_virtio_pci_modern_state = { + .name = "virtqueue_state", + .get = get_virtio_pci_modern_state, + .put = put_virtio_pci_modern_state, +}; + +static bool virtio_pci_modern_state_needed(void *opaque) +{ + VirtIOPCIProxy *proxy = opaque; + + return !(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_MODERN); +} + +static const VMStateDescription vmstate_virtio_pci_modern_state = { + .name = "virtio_pci/modern_state", + .version_id = 1, + .minimum_version_id = 1, + .needed = &virtio_pci_modern_state_needed, + .fields = (VMStateField[]) { + { + .name = "modern_state", + .version_id = 0, + .field_exists = NULL, + .size = 0, + .info = &vmstate_info_virtio_pci_modern_state, + .flags = VMS_SINGLE, + .offset = 0, + }, + VMSTATE_END_OF_LIST() + } +}; + +static const VMStateDescription vmstate_virtio_pci = { + .name = "virtio_pci", + .version_id = 1, + .minimum_version_id = 1, + .minimum_version_id_old = 1, + .fields = (VMStateField[]) { + VMSTATE_END_OF_LIST() + }, + .subsections = (const VMStateDescription*[]) { + &vmstate_virtio_pci_modern_state, + NULL + } +}; + +static void virtio_pci_save_extra_state(DeviceState *d, QEMUFile *f) +{ + VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); + + vmstate_save_state(f, &vmstate_virtio_pci, proxy, NULL); +} + +static int virtio_pci_load_extra_state(DeviceState *d, QEMUFile *f) +{ + VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); + + return vmstate_load_state(f, &vmstate_virtio_pci, proxy, 1); +} + static void virtio_pci_save_queue(DeviceState *d, int n, QEMUFile *f) { VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); @@ -133,6 +256,7 @@ static int virtio_pci_load_queue(DeviceState *d, int n, QEMUFile *f) if (vector != VIRTIO_NO_VECTOR) { return msix_vector_use(&proxy->pci_dev, vector); } + return 0; } @@ -1622,6 +1746,8 @@ static Property virtio_pci_properties[] = { VIRTIO_PCI_FLAG_DISABLE_LEGACY_BIT, false), DEFINE_PROP_BIT("disable-modern", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_DISABLE_MODERN_BIT, true), + DEFINE_PROP_BIT("migrate-extra", VirtIOPCIProxy, flags, + VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT, true), DEFINE_PROP_END_OF_LIST(), }; @@ -2212,6 +2338,9 @@ static void virtio_pci_bus_class_init(ObjectClass *klass, void *data) k->load_config = virtio_pci_load_config; k->save_queue = virtio_pci_save_queue; k->load_queue = virtio_pci_load_queue; + k->save_extra_state = virtio_pci_save_extra_state; + k->load_extra_state = virtio_pci_load_extra_state; + k->has_extra_state = virtio_pci_has_extra_state; k->query_guest_notifiers = virtio_pci_query_guest_notifiers; k->set_host_notifier = virtio_pci_set_host_notifier; k->set_guest_notifiers = virtio_pci_set_guest_notifiers; |