1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vboxvideo/vbox_ttm.c b/drivers/gpu/drm/vboxvideo/vbox_ttm.c
new file mode 100644
index 000000000..dc24c2172
--- /dev/null
+++ b/drivers/gpu/drm/vboxvideo/vbox_ttm.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright (C) 2013-2017 Oracle Corporation
+ * This file is based on ast_ttm.c
+ * Copyright 2012 Red Hat Inc.
+ * Authors: Dave Airlie <airlied@redhat.com>
+ *          Michael Thayer <michael.thayer@oracle.com>
+ */
+#include <linux/pci.h>
+#include <drm/drm_file.h>
+#include "vbox_drv.h"
+
+int vbox_mm_init(struct vbox_private *vbox)
+{
+	int ret;
+	resource_size_t base, size;
+	struct drm_device *dev = &vbox->ddev;
+	struct pci_dev *pdev = to_pci_dev(dev->dev);
+
+	base = pci_resource_start(pdev, 0);
+	size = pci_resource_len(pdev, 0);
+
+	/* Don't fail on errors, but performance might be reduced. */
+	devm_arch_phys_wc_add(&pdev->dev, base, size);
+
+	ret = drmm_vram_helper_init(dev, base, vbox->available_vram_size);
+	if (ret) {
+		DRM_ERROR("Error initializing VRAM MM; %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}