From 3c37f8b8d1e5f524c9d04d3e1d8125334e93e2eb Mon Sep 17 00:00:00 2001 From: Kangjie Xu Date: Mon, 17 Oct 2022 17:25:46 +0800 Subject: virtio: introduce virtio_queue_enable() Introduce the interface queue_enable() in VirtioDeviceClass and the fucntion virtio_queue_enable() in virtio, it can be called when VIRTIO_PCI_COMMON_Q_ENABLE is written and related virtqueue can be started. It only supports the devices of virtio 1 or later. The not-supported devices can only start the virtqueue when DRIVER_OK. Signed-off-by: Kangjie Xu Signed-off-by: Xuan Zhuo Acked-by: Jason Wang Message-Id: <20221017092558.111082-4-xuanzhuo@linux.alibaba.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/virtio/virtio.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index 74d76c1..b00b3fc 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -149,6 +149,7 @@ struct VirtioDeviceClass { void (*reset)(VirtIODevice *vdev); void (*set_status)(VirtIODevice *vdev, uint8_t val); void (*queue_reset)(VirtIODevice *vdev, uint32_t queue_index); + void (*queue_enable)(VirtIODevice *vdev, uint32_t queue_index); /* For transitional devices, this is a bitmap of features * that are only exposed on the legacy interface but not * the modern one. @@ -288,6 +289,7 @@ int virtio_queue_set_host_notifier_mr(VirtIODevice *vdev, int n, int virtio_set_status(VirtIODevice *vdev, uint8_t val); void virtio_reset(void *opaque); void virtio_queue_reset(VirtIODevice *vdev, uint32_t queue_index); +void virtio_queue_enable(VirtIODevice *vdev, uint32_t queue_index); void virtio_update_irq(VirtIODevice *vdev); int virtio_set_features(VirtIODevice *vdev, uint64_t val); -- cgit v1.1