diff options
Diffstat (limited to 'sys/dev/virtio/virtqueue.h')
| -rw-r--r-- | sys/dev/virtio/virtqueue.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/dev/virtio/virtqueue.h b/sys/dev/virtio/virtqueue.h index 128a10a79e26..0d4ed9468d22 100644 --- a/sys/dev/virtio/virtqueue.h +++ b/sys/dev/virtio/virtqueue.h @@ -41,6 +41,16 @@ struct sglist; /* Device callback for a virtqueue interrupt. */ typedef void virtqueue_intr_t(void *); +/* + * Hint on how long the next interrupt should be postponed. This is + * only used when the EVENT_IDX feature is negotiated. + */ +typedef enum { + VQ_POSTPONE_SHORT, + VQ_POSTPONE_LONG, + VQ_POSTPONE_EMPTIED /* Until all available desc are used. */ +} vq_postpone_t; + #define VIRTQUEUE_MAX_NAME_SZ 32 /* One for each virtqueue the device wishes to allocate. */ @@ -73,7 +83,7 @@ int virtqueue_reinit(struct virtqueue *vq, uint16_t size); int virtqueue_intr_filter(struct virtqueue *vq); void virtqueue_intr(struct virtqueue *vq); int virtqueue_enable_intr(struct virtqueue *vq); -int virtqueue_postpone_intr(struct virtqueue *vq); +int virtqueue_postpone_intr(struct virtqueue *vq, vq_postpone_t hint); void virtqueue_disable_intr(struct virtqueue *vq); /* Get physical address of the virtqueue ring. */ |