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