1 /* SPDX-License-Identifier: GPL-2.0 */
14  * struct vdpa_callback - vDPA callback definition.
30  * struct vdpa_notification_area - vDPA notification area
40  * struct vdpa_vq_state_split - vDPA split virtqueue state
48  * struct vdpa_vq_state_packed - vDPA packed virtqueue state
71  * struct vdpa_device - representation of a vDPA device
77  * @config: the configuration ops for this device.
92 	const struct vdpa_config_ops *config;  member
93 	struct rw_semaphore cf_lock; /* Protects get/set config */
104  * struct vdpa_iova_range - the IOVA range support by the device
124  * struct vdpa_map_file - file area for device memory mapping
125  * @file: vma->vm_file for the mapping
134  * struct vdpa_config_ops - operations for configuring a vDPA device.
165  *				@cb: virtio-vdev interrupt callback structure
226  * @get_backend_features:	Get parent-specific backend features (optional)
236  * @set_config_cb:		Set the config interrupt callback
238  *				@cb: virtio-vdev interrupt callback structure
266  *				implement .reset, Historically non-compliant
277  * @get_config_size:		Get the size of the configuration space includes
281  * @get_config:			Read from device specific configuration space
284  *				configuration space
287  *				configuration space
288  * @set_config:			Write to device specific configuration space
291  *				configuration space
294  *				configuration space
295  * @get_generation:		Get device config generation (optional)
311  * @set_group_asid:		Set address space identifier for a
315  *				@asid: address space id for this group
319  *				specific DMA translation (on-chip IOMMU)
321  *				@asid: address space identifier
327  *				specific DMA translation (on-chip IOMMU)
330  *				@asid: address space identifier
339  *				specific DMA translation (on-chip IOMMU)
342  *				@asid: address space identifier
353  *				@asid: address space identifier
360  * @bind_mm:			Bind the device to a specific address space
364  *				@mm: address space to bind
365  * @unbind_mm:			Unbind the device from the address space
448 					const struct vdpa_config_ops *config,
454  * vdpa_alloc_device - allocate and initilaize a vDPA device
459  * @config: the bus operations that is supported by this device
467 #define vdpa_alloc_device(dev_struct, member, parent, config, ngroups, nas, \  argument
470 				       parent, config, ngroups, nas, \
483  * struct vdpa_driver - operations for a vDPA driver
485  * @probe: the function to call when a device is found.  Returns 0 or -errno.
515 	return dev_get_drvdata(&vdev->dev);  in vdpa_get_drvdata()
520 	dev_set_drvdata(&vdev->dev, data);  in vdpa_set_drvdata()
525 	return vdev->dma_dev;  in vdpa_get_dma_dev()
530 	const struct vdpa_config_ops *ops = vdev->config;  in vdpa_reset()
533 	down_write(&vdev->cf_lock);  in vdpa_reset()
534 	vdev->features_valid = false;  in vdpa_reset()
535 	if (ops->compat_reset && flags)  in vdpa_reset()
536 		ret = ops->compat_reset(vdev, flags);  in vdpa_reset()
538 		ret = ops->reset(vdev);  in vdpa_reset()
539 	up_write(&vdev->cf_lock);  in vdpa_reset()
545 	const struct vdpa_config_ops *ops = vdev->config;  in vdpa_set_features_unlocked()
548 	vdev->features_valid = true;  in vdpa_set_features_unlocked()
549 	ret = ops->set_driver_features(vdev, features);  in vdpa_set_features_unlocked()
558 	down_write(&vdev->cf_lock);  in vdpa_set_features()
560 	up_write(&vdev->cf_lock);  in vdpa_set_features()
572  * struct vdpa_mgmtdev_ops - vdpa device ops
576  *	     @config: config attributes to apply to the device under creation
588  *	     @config:Attributes to be set for the device.
595 		       const struct vdpa_dev_set_config *config);
598 			    const struct vdpa_dev_set_config *config);
602  * struct vdpa_mgmt_dev - vdpa management device