34 lines · c
1// SPDX-License-Identifier: MIT2/*3 * Copyright (C) 2013-2017 Oracle Corporation4 * This file is based on ast_ttm.c5 * 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 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