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>
25 struct drm_device;
26 struct drm_file;
27 struct nouveau_drm;
28 struct hmm_range;
29 
30 #if IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM)
31 void nouveau_dmem_init(struct nouveau_drm *);
32 void nouveau_dmem_fini(struct nouveau_drm *);
33 void nouveau_dmem_suspend(struct nouveau_drm *);
34 void nouveau_dmem_resume(struct nouveau_drm *);
35 
36 int nouveau_dmem_migrate_vma(struct nouveau_drm *drm,
37 			     struct vm_area_struct *vma,
38 			     unsigned long start,
39 			     unsigned long end);
40 
41 void nouveau_dmem_convert_pfn(struct nouveau_drm *drm,
42 			      struct hmm_range *range);
43 #else /* IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) */
44 static inline void nouveau_dmem_init(struct nouveau_drm *drm) {}
45 static inline void nouveau_dmem_fini(struct nouveau_drm *drm) {}
46 static inline void nouveau_dmem_suspend(struct nouveau_drm *drm) {}
47 static inline void nouveau_dmem_resume(struct nouveau_drm *drm) {}
48 
49 static inline int nouveau_dmem_migrate_vma(struct nouveau_drm *drm,
50 					   struct vm_area_struct *vma,
51 					   unsigned long start,
52 					   unsigned long end)
53 {
54 	return 0;
55 }
56 
57 static inline void nouveau_dmem_convert_pfn(struct nouveau_drm *drm,
58 					    struct hmm_range *range) {}
59 #endif /* IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) */
60 #endif
61