drivers/gpu/drm/vc4/vc4_fence.c

   1 /*
   2  * Copyright © 2017 Broadcom
   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 (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include "vc4_drv.h"
  25
  26 static const char *vc4_fence_get_driver_name(struct dma_fence *fence)
  27 {
  28         return "vc4";
  29 }
  30
  31 static const char *vc4_fence_get_timeline_name(struct dma_fence *fence)
  32 {
  33         return "vc4-v3d";
  34 }
  35
  36 static bool vc4_fence_enable_signaling(struct dma_fence *fence)
  37 {
  38         return true;
  39 }
  40
  41 static bool vc4_fence_signaled(struct dma_fence *fence)
  42 {
  43         struct vc4_fence *f = to_vc4_fence(fence);
  44         struct vc4_dev *vc4 = to_vc4_dev(f->dev);
  45
  46         return vc4->finished_seqno >= f->seqno;
  47 }
  48
  49 const struct dma_fence_ops vc4_fence_ops = {
  50         .get_driver_name = vc4_fence_get_driver_name,
  51         .get_timeline_name = vc4_fence_get_timeline_name,
  52         .enable_signaling = vc4_fence_enable_signaling,
  53         .signaled = vc4_fence_signaled,
  54         .wait = dma_fence_default_wait,
  55         .release = dma_fence_free,
  56 };