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 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 31 void vbox_mm_fini(struct vbox_private *vbox) 32 { 33 arch_phys_wc_del(vbox->fb_mtrr); 34 } 35