1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/gpu/drm/lima/lima_gem_prime.c b/drivers/gpu/drm/lima/lima_gem_prime.c
new file mode 100644
index 000000000000..9c6d9f1dba55
--- /dev/null
+++ b/drivers/gpu/drm/lima/lima_gem_prime.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/* Copyright 2018-2019 Qiang Yu <[email protected]> */
+
+#include <linux/dma-buf.h>
+#include <drm/drm_prime.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_file.h>
+
+#include "lima_device.h"
+#include "lima_object.h"
+#include "lima_gem.h"
+#include "lima_gem_prime.h"
+
+struct drm_gem_object *lima_gem_prime_import_sg_table(
+	struct drm_device *dev, struct dma_buf_attachment *attach,
+	struct sg_table *sgt)
+{
+	struct lima_device *ldev = to_lima_dev(dev);
+	struct lima_bo *bo;
+
+	bo = lima_bo_create(ldev, attach->dmabuf->size, 0, sgt,
+			    attach->dmabuf->resv);
+	if (IS_ERR(bo))
+		return ERR_CAST(bo);
+
+	return &bo->gem;
+}
+
+struct sg_table *lima_gem_prime_get_sg_table(struct drm_gem_object *obj)
+{
+	struct lima_bo *bo = to_lima_bo(obj);
+	int npages = obj->size >> PAGE_SHIFT;
+
+	return drm_prime_pages_to_sg(bo->pages, npages);
+}
+
+int lima_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
+{
+	int ret;
+
+	ret = drm_gem_mmap_obj(obj, obj->size, vma);
+	if (ret)
+		return ret;
+
+	lima_set_vma_flags(vma);
+	return 0;
+}