| 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(dev: &pdev->dev, base, size); |
| 25 | |
| 26 | ret = drmm_vram_helper_init(dev, vram_base: base, vram_size: 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 |