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 
13 int vbox_mm_init(struct vbox_private *vbox)
14 {
15 	int ret;
16 	resource_size_t base, size;
17 	struct drm_device *dev = &vbox->ddev;
18 	struct pci_dev *pdev = to_pci_dev(dev->dev);
19 
20 	base = pci_resource_start(pdev, 0);
21 	size = pci_resource_len(pdev, 0);
22 
23 	/* Don't fail on errors, but performance might be reduced. */
24 	devm_arch_phys_wc_add(&pdev->dev, base, size);
25 
26 	ret = drmm_vram_helper_init(dev, base, vbox->available_vram_size);
27 	if (ret) {
28 		DRM_ERROR("Error initializing VRAM MM; %d\n", ret);
29 		return ret;
30 	}
31 
32 	return 0;
33 }
34