drivers/gpu/drm/nouveau/nouveau_dmem.h

   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 nouveau_svmm;
  29 struct hmm_range;
  30
  31 #if IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM)
  32 void nouveau_dmem_init(struct nouveau_drm *);
  33 void nouveau_dmem_fini(struct nouveau_drm *);
  34 void nouveau_dmem_suspend(struct nouveau_drm *);
  35 void nouveau_dmem_resume(struct nouveau_drm *);
  36
  37 int 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);
  42 unsigned long nouveau_dmem_page_addr(struct page *page);
  43
  44 #else /* IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) */
  45 static inline void nouveau_dmem_init(struct nouveau_drm *drm) {}
  46 static inline void nouveau_dmem_fini(struct nouveau_drm *drm) {}
  47 static inline void nouveau_dmem_suspend(struct nouveau_drm *drm) {}
  48 static inline void nouveau_dmem_resume(struct nouveau_drm *drm) {}
  49 #endif /* IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) */
  50 #endif