drm/nouveau/nouveau_dmem.h

0001 /*
0002  * Copyright 2018 Red Hat Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  */
0022 #ifndef __NOUVEAU_DMEM_H__
0023 #define __NOUVEAU_DMEM_H__
0024 #include <nvif/os.h>
0025 struct drm_device;
0026 struct drm_file;
0027 struct nouveau_drm;
0028 struct nouveau_svmm;
0029 struct hmm_range;
0030
0031 #if IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM)
0032 void nouveau_dmem_init(struct nouveau_drm *);
0033 void nouveau_dmem_fini(struct nouveau_drm *);
0034 void nouveau_dmem_suspend(struct nouveau_drm *);
0035 void nouveau_dmem_resume(struct nouveau_drm *);
0036
0037 int nouveau_dmem_migrate_vma(struct nouveau_drm *drm,
0038                  struct nouveau_svmm *svmm,
0039                  struct vm_area_struct *vma,
0040                  unsigned long start,
0041                  unsigned long end);
0042 unsigned long nouveau_dmem_page_addr(struct page *page);
0043
0044 #else /* IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) */
0045 static inline void nouveau_dmem_init(struct nouveau_drm *drm) {}
0046 static inline void nouveau_dmem_fini(struct nouveau_drm *drm) {}
0047 static inline void nouveau_dmem_suspend(struct nouveau_drm *drm) {}
0048 static inline void nouveau_dmem_resume(struct nouveau_drm *drm) {}
0049 #endif /* IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) */
0050 #endif