diff options
Diffstat (limited to 'drivers/gpu/drm/vboxvideo/vbox_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/vboxvideo/vbox_ttm.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vboxvideo/vbox_ttm.c b/drivers/gpu/drm/vboxvideo/vbox_ttm.c new file mode 100644 index 000000000..f5a06675d --- /dev/null +++ b/drivers/gpu/drm/vboxvideo/vbox_ttm.c @@ -0,0 +1,36 @@ +// 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; + + vmm = drm_vram_helper_alloc_mm(dev, pci_resource_start(dev->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(dev->pdev, 0), + pci_resource_len(dev->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); +} |