1/*
2 * Copyright 2018 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22#ifndef __NOUVEAU_DMEM_H__
23#define __NOUVEAU_DMEM_H__
24#include <nvif/os.h>
25struct drm_device;
26struct drm_file;
27struct nouveau_drm;
28struct nouveau_svmm;
29struct hmm_range;
30
31#if IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM)
32void nouveau_dmem_init(struct nouveau_drm *);
33void nouveau_dmem_fini(struct nouveau_drm *);
34void nouveau_dmem_suspend(struct nouveau_drm *);
35void nouveau_dmem_resume(struct nouveau_drm *);
36
37int nouveau_dmem_migrate_vma(struct nouveau_drm *drm,
38 struct nouveau_svmm *svmm,
39 struct vm_area_struct *vma,
40 unsigned long start,
41 unsigned long end);
42unsigned long nouveau_dmem_page_addr(struct page *page);
43
44#else /* IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) */
45static inline void nouveau_dmem_init(struct nouveau_drm *drm) {}
46static inline void nouveau_dmem_fini(struct nouveau_drm *drm) {}
47static inline void nouveau_dmem_suspend(struct nouveau_drm *drm) {}
48static inline void nouveau_dmem_resume(struct nouveau_drm *drm) {}
49#endif /* IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) */
50#endif
51

source code of linux/drivers/gpu/drm/nouveau/nouveau_dmem.h