[PATCH 5/5] drm/virtio: add virtio_gpu_context_type

[Gurchetan Singh]

We'll have to do something like this eventually, and this
conveys we want a Virgl context by default.

Signed-off-by: Gurchetan Singh <gurchetansingh at chromium.org>
---
 drivers/gpu/drm/virtio/virtgpu_ioctl.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index d2f17778bdc4..f3be29d3f103 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -33,8 +33,14 @@
 
 #include "virtgpu_drv.h"
 
+/* TODO: add more context types */
+enum virtio_gpu_context_type {
+	virtio_gpu_virgl_context,
+};
+
 static void virtio_gpu_create_context(struct drm_device *dev,
-				      struct drm_file *file)
+				      struct drm_file *file,
+				      enum virtio_gpu_context_type type)
 {
 	struct virtio_gpu_device *vgdev = dev->dev_private;
 	struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
@@ -47,6 +53,11 @@ static void virtio_gpu_create_context(struct drm_device *dev,
 	if (!atomic_add_unless(&vfpriv->context_initiated, 1, 1))
 		return;
 
+	if (type != virtio_gpu_virgl_context) {
+		DRM_ERROR("Unsupported context type: %u\n", type);
+		return;
+	}
+
 	get_task_comm(dbgname, current);
 	virtio_gpu_cmd_context_create(vgdev, vfpriv->ctx_id,
 				      strlen(dbgname), dbgname);
@@ -93,7 +104,7 @@ static int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data,
 
 	exbuf->fence_fd = -1;
 
-	virtio_gpu_create_context(dev, file);
+	virtio_gpu_create_context(dev, file, virtio_gpu_virgl_context);
 	if (exbuf->flags & VIRTGPU_EXECBUF_FENCE_FD_IN) {
 		struct dma_fence *in_fence;
 
@@ -244,7 +255,7 @@ static int virtio_gpu_resource_create_ioctl(struct drm_device *dev, void *data,
 			return -EINVAL;
 	}
 
-	virtio_gpu_create_context(dev, file);
+	virtio_gpu_create_context(dev, file, virtio_gpu_virgl_context);
 	params.format = rc->format;
 	params.width = rc->width;
 	params.height = rc->height;
@@ -318,7 +329,7 @@ static int virtio_gpu_transfer_from_host_ioctl(struct drm_device *dev,
 	if (vgdev->has_virgl_3d == false)
 		return -ENOSYS;
 
-	virtio_gpu_create_context(dev, file);
+	virtio_gpu_create_context(dev, file, virtio_gpu_virgl_context);
 	objs = virtio_gpu_array_from_handles(file, &args->bo_handle, 1);
 	if (objs == NULL)
 		return -ENOENT;
@@ -366,7 +377,7 @@ static int virtio_gpu_transfer_to_host_ioctl(struct drm_device *dev, void *data,
 			 args->box.w, args->box.h, args->box.x, args->box.y,
 			 objs, NULL);
 	} else {
-		virtio_gpu_create_context(dev, file);
+		virtio_gpu_create_context(dev, file, virtio_gpu_virgl_context);
 		ret = virtio_gpu_array_lock_resv(objs);
 		if (ret != 0)
 			goto err_put_free;
@@ -467,7 +478,7 @@ static int virtio_gpu_get_caps_ioctl(struct drm_device *dev,
 	spin_unlock(&vgdev->display_info_lock);
 
 	/* not in cache - need to talk to hw */
-	virtio_gpu_create_context(dev, file);
+	virtio_gpu_create_context(dev, file, virtio_gpu_virgl_context);
 	virtio_gpu_cmd_get_capset(vgdev, found_valid, args->cap_set_ver,
 				  &cache_ent);
 
-- 
2.25.0.265.gbab2e86ba0-goog