diff options
Diffstat (limited to 'include/hw/virtio/virtio-bus.h')
| -rw-r--r-- | include/hw/virtio/virtio-bus.h | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h index 3f2c1363d0..f3e5ef3f5b 100644 --- a/include/hw/virtio/virtio-bus.h +++ b/include/hw/virtio/virtio-bus.h @@ -52,7 +52,6 @@ typedef struct VirtioBusClass { bool (*has_extra_state)(DeviceState *d); bool (*query_guest_notifiers)(DeviceState *d); int (*set_guest_notifiers)(DeviceState *d, int nvqs, bool assign); - int (*set_host_notifier)(DeviceState *d, int n, bool assigned); void (*vmstate_change)(DeviceState *d, bool running); /* * transport independent init function. @@ -71,6 +70,29 @@ typedef struct VirtioBusClass { void (*device_unplugged)(DeviceState *d); int (*query_nvectors)(DeviceState *d); /* + * ioeventfd handling: if the transport implements ioeventfd_started, + * it must implement the other ioeventfd callbacks as well + */ + /* Returns true if the ioeventfd has been started for the device. */ + bool (*ioeventfd_started)(DeviceState *d); + /* + * Sets the 'ioeventfd started' state after the ioeventfd has been + * started/stopped for the device. err signifies whether an error + * had occurred. + */ + void (*ioeventfd_set_started)(DeviceState *d, bool started, bool err); + /* Returns true if the ioeventfd has been disabled for the device. */ + bool (*ioeventfd_disabled)(DeviceState *d); + /* Sets the 'ioeventfd disabled' state for the device. */ + void (*ioeventfd_set_disabled)(DeviceState *d, bool disabled); + /* + * Assigns/deassigns the ioeventfd backing for the transport on + * the device for queue number n. Returns an error value on + * failure. + */ + int (*ioeventfd_assign)(DeviceState *d, EventNotifier *notifier, + int n, bool assign); + /* * Does the transport have variable vring alignment? * (ie can it ever call virtio_queue_set_align()?) * Note that changing this will break migration for this transport. @@ -111,4 +133,11 @@ static inline VirtIODevice *virtio_bus_get_device(VirtioBusState *bus) return (VirtIODevice *)qdev; } +/* Start the ioeventfd. */ +void virtio_bus_start_ioeventfd(VirtioBusState *bus); +/* Stop the ioeventfd. */ +void virtio_bus_stop_ioeventfd(VirtioBusState *bus); +/* Switch from/to the generic ioeventfd handler */ +int virtio_bus_set_host_notifier(VirtioBusState *bus, int n, bool assign); + #endif /* VIRTIO_BUS_H */ |