vdpa: introduce config op to get valid iova range (3f1b623a) · Commits · 戴 / test

include/linux/vdpa.h

+15 −0

Original line number	Diff line number	Diff line
		@@ -52,6 +52,16 @@ struct vdpa_device {
		int nvqs;
		};

		/**
		* vDPA IOVA range - the IOVA range support by the device
		* @first: start of the IOVA range
		* @last: end of the IOVA range
		*/
		struct vdpa_iova_range {
		u64 first;
		u64 last;
		};

		/**
		* vDPA_config_ops - operations for configuring a vDPA device.
		* Note: vDPA device drivers are required to implement all of the
		@@ -151,6 +161,10 @@ struct vdpa_device {
		* @get_generation: Get device config generation (optional)
		* @vdev: vdpa device
		* Returns u32: device generation
		* @get_iova_range: Get supported iova range (optional)
		* @vdev: vdpa device
		* Returns the iova range supported by
		* the device.
		* @set_map: Set device memory mapping (optional)
		* Needed for device that using device
		* specific DMA translation (on-chip IOMMU)
		@@ -216,6 +230,7 @@ struct vdpa_config_ops {
		void (set_config)(struct vdpa_device vdev, unsigned int offset,
		const void *buf, unsigned int len);
		u32 (get_generation)(struct vdpa_device vdev);
		struct vdpa_iova_range (get_iova_range)(struct vdpa_device vdev);

		/* DMA ops */
		int (set_map)(struct vdpa_device vdev, struct vhost_iotlb *iotlb);