1// SPDX-License-Identifier: MIT
 2/*
 3 * Copyright (C) 2013-2017 Oracle Corporation
 4 * This file is based on ast_ttm.c
 5 * Copyright 2012 Red Hat Inc.
 6 * Authors: Dave Airlie <airlied@redhat.com>
 7 *          Michael Thayer <michael.thayer@oracle.com>
 8 */
 9#include <linux/pci.h>
10#include <drm/drm_file.h>
11#include "vbox_drv.h"
12
13int vbox_mm_init(struct vbox_private *vbox)
14{
15	int ret;
16	struct drm_device *dev = &vbox->ddev;
17	struct pci_dev *pdev = to_pci_dev(dev->dev);
18
19	ret = drmm_vram_helper_init(dev, pci_resource_start(pdev, 0),
20				       vbox->available_vram_size);
21	if (ret) {
22		DRM_ERROR("Error initializing VRAM MM; %d\n", ret);
23		return ret;
24	}
25
26	vbox->fb_mtrr = arch_phys_wc_add(pci_resource_start(pdev, 0),
27					 pci_resource_len(pdev, 0));
28	return 0;
29}
30
31void vbox_mm_fini(struct vbox_private *vbox)
32{
33	arch_phys_wc_del(vbox->fb_mtrr);
34}