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  1. /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
  2.  
  3. /*
  4.  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the "Software"),
  8.  * to deal in the Software without restriction, including without limitation
  9.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10.  * and/or sell copies of the Software, and to permit persons to whom the
  11.  * Software is furnished to do so, subject to the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice (including the next
  14.  * paragraph) shall be included in all copies or substantial portions of the
  15.  * Software.
  16.  *
  17.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22.  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23.  * SOFTWARE.
  24.  *
  25.  * Authors:
  26.  *    Rob Clark <robclark@freedesktop.org>
  27.  */
  28.  
  29. #include "util/u_inlines.h"
  30.  
  31. #include "freedreno_fence.h"
  32. #include "freedreno_context.h"
  33. #include "freedreno_util.h"
  34.  
  35. struct pipe_fence_handle {
  36.         struct pipe_reference reference;
  37.         struct fd_context *ctx;
  38.         struct fd_screen *screen;
  39.         uint32_t timestamp;
  40. };
  41.  
  42. void
  43. fd_screen_fence_ref(struct pipe_screen *pscreen,
  44.                 struct pipe_fence_handle **ptr,
  45.                 struct pipe_fence_handle *pfence)
  46. {
  47.         if (pipe_reference(&(*ptr)->reference, &pfence->reference))
  48.                 FREE(*ptr);
  49.  
  50.         *ptr = pfence;
  51. }
  52.  
  53. /* TODO we need to spiff out libdrm_freedreno a bit to allow passing
  54.  * the timeout.. and maybe a better way to check if fence has been
  55.  * signaled.  The current implementation is a bit lame for now to
  56.  * avoid bumping libdrm version requirement.
  57.  */
  58.  
  59. boolean fd_screen_fence_signalled(struct pipe_screen *screen,
  60.                 struct pipe_fence_handle *fence)
  61. {
  62.         uint32_t timestamp = fd_ringbuffer_timestamp(fence->ctx->ring);
  63.  
  64.         /* TODO util helper for compare w/ rollover? */
  65.         return timestamp >= fence->timestamp;
  66. }
  67.  
  68. boolean fd_screen_fence_finish(struct pipe_screen *screen,
  69.                 struct pipe_fence_handle *fence,
  70.                 uint64_t timeout)
  71. {
  72.         if (fd_pipe_wait(fence->screen->pipe, fence->timestamp))
  73.                 return false;
  74.  
  75.         return true;
  76. }
  77.  
  78. struct pipe_fence_handle * fd_fence_create(struct pipe_context *pctx)
  79. {
  80.         struct pipe_fence_handle *fence;
  81.         struct fd_context *ctx = fd_context(pctx);
  82.  
  83.         fence = CALLOC_STRUCT(pipe_fence_handle);
  84.         if (!fence)
  85.                 return NULL;
  86.  
  87.         pipe_reference_init(&fence->reference, 1);
  88.  
  89.         fence->ctx = ctx;
  90.         fence->screen = ctx->screen;
  91.         fence->timestamp = fd_ringbuffer_timestamp(ctx->ring);
  92.  
  93.         return fence;
  94. }
  95.