Commit 18b39fb9 authored by Gurchetan Singh's avatar Gurchetan Singh Committed by Gerd Hoffmann
Browse files

drm/virtio: add virtio_gpu_is_shmem helper 



The plan is use have both shmem and virtual "vram" running
side-by-side in virtio-gpu. It looks like we'll eventually use
struct drm_gem_object as a base class, and we'll need to convert
to shmem and vram objects on the fly. As a first step, add a
virtio_gpu_is_shmem helper. Thanks to kraxel for suggesting this
approach on Gitlab.

Suggested-by: default avatarGerd Hoffman <kraxel@redhat.com>
Signed-off-by: default avatarGurchetan Singh <gurchetansingh@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20200227002601.745-3-gurchetansingh@chromium.org


Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
parent 068a8fea

drivers/gpu/drm/virtio/virtgpu_drv.h

+3 −0
Original line number Diff line number Diff line
@@ -365,6 +365,9 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, 
			     struct virtio_gpu_object_params *params,

			     struct virtio_gpu_object **bo_ptr,

			     struct virtio_gpu_fence *fence);



bool virtio_gpu_is_shmem(struct drm_gem_object *obj);



/* virtgpu_prime.c */

struct drm_gem_object *virtgpu_gem_prime_import_sg_table(

	struct drm_device *dev, struct dma_buf_attachment *attach,

drivers/gpu/drm/virtio/virtgpu_object.c

+7 −2
Original line number Diff line number Diff line
@@ -95,7 +95,7 @@ static void virtio_gpu_free_object(struct drm_gem_object *obj) 
	virtio_gpu_cleanup_object(bo);

}



static const struct drm_gem_object_funcs virtio_gpu_gem_funcs = {

static const struct drm_gem_object_funcs virtio_gpu_shmem_funcs = {

	.free = virtio_gpu_free_object,

	.open = virtio_gpu_gem_object_open,

	.close = virtio_gpu_gem_object_close,
@@ -109,6 +109,11 @@ static const struct drm_gem_object_funcs virtio_gpu_gem_funcs = { 
	.mmap = drm_gem_shmem_mmap,

};



bool virtio_gpu_is_shmem(struct drm_gem_object *obj)

{

	return obj->funcs == &virtio_gpu_shmem_funcs;

}



struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,

						size_t size)

{
@@ -118,7 +123,7 @@ struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev, 
	if (!bo)

		return NULL;



	bo->base.base.funcs = &virtio_gpu_gem_funcs;

	bo->base.base.funcs = &virtio_gpu_shmem_funcs;

	return &bo->base.base;

}

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