drm/virtio: track created object state

Track whenever the virtio_gpu_object is already created (i.e. host knows
about it) in a new variable.  Add checks to virtio_gpu_object_attach()
to do nothing on objects not created yet.

Make virtio_gpu_ttm_bo_destroy() use the new variable too, instead of
expecting hw_res_handle indicating the object state.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20181019061847.18958-2-kraxel@redhat.com

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index d29f0c7..5edc22d 100644 (file)
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -65,6 +65,7 @@ struct virtio_gpu_object {
        struct ttm_placement            placement;
        struct ttm_buffer_object        tbo;
        struct ttm_bo_kmap_obj          kmap;
+       bool created;
 };
 #define gem_to_virtio_gpu_obj(gobj) \
        container_of((gobj), struct virtio_gpu_object, gem_base)
@@ -263,6 +264,7 @@ void virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev,
                               uint32_t *resid);
 void virtio_gpu_resource_id_put(struct virtio_gpu_device *vgdev, uint32_t id);
 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
+                                   struct virtio_gpu_object *bo,
                                    uint32_t resource_id,
                                    uint32_t format,
                                    uint32_t width,
@@ -324,6 +326,7 @@ void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
                                        struct virtio_gpu_fence **fence);
 void
 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
+                                 struct virtio_gpu_object *bo,
                                  struct virtio_gpu_resource_create_3d *rc_3d,
                                  struct virtio_gpu_fence **fence);
 void virtio_gpu_ctrl_ack(struct virtqueue *vq);

diff --git a/drivers/gpu/drm/virtio/virtgpu_fb.c b/drivers/gpu/drm/virtio/virtgpu_fb.c
index cea749f..d39f4f3 100644 (file)
--- a/drivers/gpu/drm/virtio/virtgpu_fb.c
+++ b/drivers/gpu/drm/virtio/virtgpu_fb.c
@@ -232,7 +232,7 @@ static int virtio_gpufb_create(struct drm_fb_helper *helper,
                return PTR_ERR(obj);
 
        virtio_gpu_resource_id_get(vgdev, &resid);
-       virtio_gpu_cmd_create_resource(vgdev, resid, format,
+       virtio_gpu_cmd_create_resource(vgdev, obj, resid, format,
                                       mode_cmd.width, mode_cmd.height);
 
        ret = virtio_gpu_object_kmap(obj);

diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c
index 82c817f..33dbd5a 100644 (file)
--- a/drivers/gpu/drm/virtio/virtgpu_gem.c
+++ b/drivers/gpu/drm/virtio/virtgpu_gem.c
@@ -103,8 +103,9 @@ int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
                goto fail;
 
        format = virtio_gpu_translate_format(DRM_FORMAT_HOST_XRGB8888);
+       obj = gem_to_virtio_gpu_obj(gobj);
        virtio_gpu_resource_id_get(vgdev, &resid);
-       virtio_gpu_cmd_create_resource(vgdev, resid, format,
+       virtio_gpu_cmd_create_resource(vgdev, obj, resid, format,
                                       args->width, args->height);
 
        /* attach the object to the resource */

diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index f16b875..98bb238 100644 (file)
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -260,7 +260,7 @@ static int virtio_gpu_resource_create_ioctl(struct drm_device *dev, void *data,
        obj = &qobj->gem_base;
 
        if (!vgdev->has_virgl_3d) {
-               virtio_gpu_cmd_create_resource(vgdev, res_id, rc->format,
+               virtio_gpu_cmd_create_resource(vgdev, qobj, res_id, rc->format,
                                               rc->width, rc->height);
 
                ret = virtio_gpu_object_attach(vgdev, qobj, res_id, NULL);
@@ -288,7 +288,7 @@ static int virtio_gpu_resource_create_ioctl(struct drm_device *dev, void *data,
                rc_3d.nr_samples = cpu_to_le32(rc->nr_samples);
                rc_3d.flags = cpu_to_le32(rc->flags);
 
-               virtio_gpu_cmd_resource_create_3d(vgdev, &rc_3d, NULL);
+               virtio_gpu_cmd_resource_create_3d(vgdev, qobj, &rc_3d, NULL);
                ret = virtio_gpu_object_attach(vgdev, qobj, res_id, &fence);
                if (ret) {
                        ttm_eu_backoff_reservation(&ticket, &validate_list);

diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c
index eca7655..6611c48 100644 (file)
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -33,7 +33,7 @@ static void virtio_gpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)
        bo = container_of(tbo, struct virtio_gpu_object, tbo);
        vgdev = (struct virtio_gpu_device *)bo->gem_base.dev->dev_private;
 
-       if (bo->hw_res_handle)
+       if (bo->created)
                virtio_gpu_cmd_unref_resource(vgdev, bo->hw_res_handle);
        if (bo->pages)
                virtio_gpu_object_free_sg_table(bo);

diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 4e2e037..3b6904c 100644 (file)
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -388,6 +388,7 @@ retry:
 
 /* create a basic resource */
 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
+                                   struct virtio_gpu_object *bo,
                                    uint32_t resource_id,
                                    uint32_t format,
                                    uint32_t width,
@@ -406,6 +407,7 @@ void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
        cmd_p->height = cpu_to_le32(height);
 
        virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+       bo->created = true;
 }
 
 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
@@ -772,6 +774,7 @@ void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
 
 void
 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
+                                 struct virtio_gpu_object *bo,
                                  struct virtio_gpu_resource_create_3d *rc_3d,
                                  struct virtio_gpu_fence **fence)
 {
@@ -786,6 +789,7 @@ virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
        cmd_p->hdr.flags = 0;
 
        virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, &cmd_p->hdr, fence);
+       bo->created = true;
 }
 
 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
@@ -869,6 +873,9 @@ int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
        struct scatterlist *sg;
        int si, nents;
 
+       if (!obj->created)
+               return 0;
+
        if (!obj->pages) {
                int ret;