drm/i915/gvt: merge struct kvmgt_vdev into struct intel_vgpu

Move towards having only a single structure for the per-VGPU state.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20220411141403.86980-11-hch@lst.deReviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>

drivers/gpu/drm/i915/gvt/gvt.h

@@ -207,21 +207,36 @@ struct intel_vgpu {
 
 	struct dentry *debugfs;
 
-	/* Hypervisor-specific device state. */
-	void *vdev;
-
 	struct list_head dmabuf_obj_list_head;
 	struct mutex dmabuf_lock;
 	struct idr object_idr;
 	struct intel_vgpu_vblank_timer vblank_timer;
 
 	u32 scan_nonprivbb;
-};
 
-static inline void *intel_vgpu_vdev(struct intel_vgpu *vgpu)
-{
-	return vgpu->vdev;
-}
+	struct mdev_device *mdev;
+	struct vfio_region *region;
+	int num_regions;
+	struct eventfd_ctx *intx_trigger;
+	struct eventfd_ctx *msi_trigger;
+
+	/*
+	 * Two caches are used to avoid mapping duplicated pages (eg.
+	 * scratch pages). This help to reduce dma setup overhead.
+	 */
+	struct rb_root gfn_cache;
+	struct rb_root dma_addr_cache;
+	unsigned long nr_cache_entries;
+	struct mutex cache_lock;
+
+	struct notifier_block iommu_notifier;
+	struct notifier_block group_notifier;
+	struct kvm *kvm;
+	struct work_struct release_work;
+	atomic_t released;
+	struct vfio_device *vfio_device;
+	struct vfio_group *vfio_group;
+};
 
 /* validating GM healthy status*/
 #define vgpu_is_vm_unhealthy(ret_val) \

drivers/gpu/drm/i915/gvt/hypercall.h

@@ -44,7 +44,6 @@ struct device;
 struct intel_gvt_mpt {
 	int (*host_init)(struct device *dev, void *gvt);
 	void (*host_exit)(struct device *dev, void *gvt);
-	int (*attach_vgpu)(void *vgpu, unsigned long *handle);
 	void (*detach_vgpu)(void *vgpu);
 	int (*inject_msi)(unsigned long handle, u32 addr, u16 data);
 	int (*enable_page_track)(unsigned long handle, u64 gfn);

drivers/gpu/drm/i915/gvt/mpt.h

@@ -71,22 +71,6 @@ static inline void intel_gvt_hypervisor_host_exit(struct device *dev, void *gvt)
 	intel_gvt_host.mpt->host_exit(dev, gvt);
 }
 
-/**
- * intel_gvt_hypervisor_attach_vgpu - call hypervisor to initialize vGPU
- * related stuffs inside hypervisor.
- *
- * Returns:
- * Zero on success, negative error code if failed.
- */
-static inline int intel_gvt_hypervisor_attach_vgpu(struct intel_vgpu *vgpu)
-{
-	/* optional to provide */
-	if (!intel_gvt_host.mpt->attach_vgpu)
-		return 0;
-
-	return intel_gvt_host.mpt->attach_vgpu(vgpu, &vgpu->handle);
-}
-
 /**
  * intel_gvt_hypervisor_detach_vgpu - call hypervisor to release vGPU
  * related stuffs inside hypervisor.

drivers/gpu/drm/i915/gvt/vgpu.c

@@ -405,13 +405,9 @@ static struct intel_vgpu *__intel_gvt_create_vgpu(struct intel_gvt *gvt,
 
 	populate_pvinfo_page(vgpu);
 
-	ret = intel_gvt_hypervisor_attach_vgpu(vgpu);
-	if (ret)
-		goto out_clean_vgpu_resource;
-
 	ret = intel_vgpu_init_gtt(vgpu);
 	if (ret)
-		goto out_detach_hypervisor_vgpu;
+		goto out_clean_vgpu_resource;
 
 	ret = intel_vgpu_init_opregion(vgpu);
 	if (ret)
@@ -454,8 +450,6 @@ static struct intel_vgpu *__intel_gvt_create_vgpu(struct intel_gvt *gvt,
 	intel_vgpu_clean_opregion(vgpu);
 out_clean_gtt:
 	intel_vgpu_clean_gtt(vgpu);
-out_detach_hypervisor_vgpu:
-	intel_gvt_hypervisor_detach_vgpu(vgpu);
 out_clean_vgpu_resource:
 	intel_vgpu_free_resource(vgpu);
 out_clean_vgpu_mmio: