// 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) { struct drm_vram_mm *vmm; int ret; struct drm_device *dev = &vbox->ddev; struct pci_dev *pdev = to_pci_dev(dev->dev); vmm = drm_vram_helper_alloc_mm(dev, pci_resource_start(pdev, 0), vbox->available_vram_size); if (IS_ERR(vmm)) { ret = PTR_ERR(vmm); DRM_ERROR("Error initializing VRAM MM; %d\n", ret); return ret; } vbox->fb_mtrr = arch_phys_wc_add(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); return 0; } void vbox_mm_fini(struct vbox_private *vbox) { arch_phys_wc_del(vbox->fb_mtrr); drm_vram_helper_release_mm(&vbox->ddev); }