linux/drivers/gpu/drm/vc4/vc4_fence.c
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   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
  26static const char *vc4_fence_get_driver_name(struct dma_fence *fence)
  27{
  28        return "vc4";
  29}
  30
  31static const char *vc4_fence_get_timeline_name(struct dma_fence *fence)
  32{
  33        return "vc4-v3d";
  34}
  35
  36static bool vc4_fence_signaled(struct dma_fence *fence)
  37{
  38        struct vc4_fence *f = to_vc4_fence(fence);
  39        struct vc4_dev *vc4 = to_vc4_dev(f->dev);
  40
  41        return vc4->finished_seqno >= f->seqno;
  42}
  43
  44const struct dma_fence_ops vc4_fence_ops = {
  45        .get_driver_name = vc4_fence_get_driver_name,
  46        .get_timeline_name = vc4_fence_get_timeline_name,
  47        .signaled = vc4_fence_signaled,
  48};
  49