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Commit cf561f0d authored by Greg Kurz's avatar Greg Kurz Committed by Michael S. Tsirkin
Browse files

virtio: introduce virtio_is_little_endian() helper 



Signed-off-by: default avatarGreg Kurz <gkurz@linux.vnet.ibm.com>

Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Acked-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent 8a7b19d8

include/linux/virtio_config.h

+11 −6
Original line number Diff line number Diff line
@@ -205,35 +205,40 @@ int virtqueue_set_affinity(struct virtqueue *vq, int cpu) 
	return 0;

}



static inline bool virtio_is_little_endian(struct virtio_device *vdev)

{

	return virtio_has_feature(vdev, VIRTIO_F_VERSION_1);

}



/* Memory accessors */

static inline u16 virtio16_to_cpu(struct virtio_device *vdev, __virtio16 val)

{

	return __virtio16_to_cpu(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);

	return __virtio16_to_cpu(virtio_is_little_endian(vdev), val);

}



static inline __virtio16 cpu_to_virtio16(struct virtio_device *vdev, u16 val)

{

	return __cpu_to_virtio16(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);

	return __cpu_to_virtio16(virtio_is_little_endian(vdev), val);

}



static inline u32 virtio32_to_cpu(struct virtio_device *vdev, __virtio32 val)

{

	return __virtio32_to_cpu(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);

	return __virtio32_to_cpu(virtio_is_little_endian(vdev), val);

}



static inline __virtio32 cpu_to_virtio32(struct virtio_device *vdev, u32 val)

{

	return __cpu_to_virtio32(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);

	return __cpu_to_virtio32(virtio_is_little_endian(vdev), val);

}



static inline u64 virtio64_to_cpu(struct virtio_device *vdev, __virtio64 val)

{

	return __virtio64_to_cpu(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);

	return __virtio64_to_cpu(virtio_is_little_endian(vdev), val);

}



static inline __virtio64 cpu_to_virtio64(struct virtio_device *vdev, u64 val)

{

	return __cpu_to_virtio64(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);

	return __cpu_to_virtio64(virtio_is_little_endian(vdev), val);

}



/* Config space accessors. */