1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_gem_prime.c b/drivers/gpu/drm/msm/msm_gem_prime.c
new file mode 100644
index 000000000..8c64ce728
--- /dev/null
+++ b/drivers/gpu/drm/msm/msm_gem_prime.c
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2013 Red Hat
+ * Author: Rob Clark <robdclark@gmail.com>
+ */
+
+#include <linux/dma-buf.h>
+
+#include <drm/drm_prime.h>
+
+#include "msm_drv.h"
+#include "msm_gem.h"
+
+struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj)
+{
+	struct msm_gem_object *msm_obj = to_msm_bo(obj);
+	int npages = obj->size >> PAGE_SHIFT;
+
+	if (WARN_ON(!msm_obj->pages))  /* should have already pinned! */
+		return ERR_PTR(-ENOMEM);
+
+	return drm_prime_pages_to_sg(obj->dev, msm_obj->pages, npages);
+}
+
+void *msm_gem_prime_vmap(struct drm_gem_object *obj)
+{
+	return msm_gem_get_vaddr(obj);
+}
+
+void msm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
+{
+	msm_gem_put_vaddr(obj);
+}
+
+int msm_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 < 0)
+		return ret;
+
+	return msm_gem_mmap_obj(vma->vm_private_data, vma);
+}
+
+struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev,
+		struct dma_buf_attachment *attach, struct sg_table *sg)
+{
+	return msm_gem_import(dev, attach->dmabuf, sg);
+}
+
+int msm_gem_prime_pin(struct drm_gem_object *obj)
+{
+	if (!obj->import_attach)
+		msm_gem_get_pages(obj);
+	return 0;
+}
+
+void msm_gem_prime_unpin(struct drm_gem_object *obj)
+{
+	if (!obj->import_attach)
+		msm_gem_put_pages(obj);
+}