LXR linux/drivers/gpu/drm/nouveau/nouveau

   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