drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h

   1 /*
   2  * Copyright 2016 Advanced Micro Devices, 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  * Authors: Christian König
  23  */
  24 #ifndef __AMDGPU_SYNC_H__
  25 #define __AMDGPU_SYNC_H__
  26
  27 #include <linux/hashtable.h>
  28
  29 struct dma_fence;
  30 struct reservation_object;
  31 struct amdgpu_device;
  32 struct amdgpu_ring;
  33
  34 /*
  35  * Container for fences used to sync command submissions.
  36  */
  37 struct amdgpu_sync {
  38         DECLARE_HASHTABLE(fences, 4);
  39         struct dma_fence        *last_vm_update;
  40 };
  41
  42 void amdgpu_sync_create(struct amdgpu_sync *sync);
  43 int amdgpu_sync_fence(struct amdgpu_device *adev, struct amdgpu_sync *sync,
  44                       struct dma_fence *f);
  45 int amdgpu_sync_resv(struct amdgpu_device *adev,
  46                      struct amdgpu_sync *sync,
  47                      struct reservation_object *resv,
  48                      void *owner);
  49 struct dma_fence *amdgpu_sync_peek_fence(struct amdgpu_sync *sync,
  50                                      struct amdgpu_ring *ring);
  51 struct dma_fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync);
  52 void amdgpu_sync_free(struct amdgpu_sync *sync);
  53 int amdgpu_sync_init(void);
  54 void amdgpu_sync_fini(void);
  55
  56 #endif