src/gallium/drivers/freedreno/freedreno_fence.c

   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 <libsync.h>
  30
  31 #include "util/u_inlines.h"
  32
  33 #include "freedreno_fence.h"
  34 #include "freedreno_context.h"
  35 #include "freedreno_util.h"
  36
  37 struct pipe_fence_handle {
  38         struct pipe_reference reference;
  39         struct fd_context *ctx;
  40         struct fd_screen *screen;
  41         int fence_fd;
  42         uint32_t timestamp;
  43 };
  44
  45 static void fd_fence_destroy(struct pipe_fence_handle *fence)
  46 {
  47         if (fence->fence_fd != -1)
  48                 close(fence->fence_fd);
  49         FREE(fence);
  50 }
  51
  52 void fd_fence_ref(struct pipe_screen *pscreen,
  53                 struct pipe_fence_handle **ptr,
  54                 struct pipe_fence_handle *pfence)
  55 {
  56         if (pipe_reference(&(*ptr)->reference, &pfence->reference))
  57                 fd_fence_destroy(*ptr);
  58
  59         *ptr = pfence;
  60 }
  61
  62 boolean fd_fence_finish(struct pipe_screen *pscreen,
  63                 struct pipe_context *ctx,
  64                 struct pipe_fence_handle *fence,
  65                 uint64_t timeout)
  66 {
  67         if (fence->fence_fd != -1) {
  68                 int ret = sync_wait(fence->fence_fd, timeout / 1000000);
  69                 return ret == 0;
  70         }
  71
  72         if (fd_pipe_wait_timeout(fence->screen->pipe, fence->timestamp, timeout))
  73                 return false;
  74
  75         return true;
  76 }
  77
  78 void fd_create_fence_fd(struct pipe_context *pctx,
  79                 struct pipe_fence_handle **pfence, int fd)
  80 {
  81         *pfence = fd_fence_create(fd_context(pctx), 0, dup(fd));
  82 }
  83
  84 void fd_fence_server_sync(struct pipe_context *pctx,
  85                 struct pipe_fence_handle *fence)
  86 {
  87         struct fd_context *ctx = fd_context(pctx);
  88         struct fd_batch *batch = ctx->batch;
  89
  90         if (sync_accumulate("freedreno", &batch->in_fence_fd, fence->fence_fd)) {
  91                 /* error */
  92         }
  93 }
  94
  95 int fd_fence_get_fd(struct pipe_screen *pscreen,
  96                 struct pipe_fence_handle *fence)
  97 {
  98         return dup(fence->fence_fd);
  99 }
 100
 101 struct pipe_fence_handle * fd_fence_create(struct fd_context *ctx,
 102                 uint32_t timestamp, int fence_fd)
 103 {
 104         struct pipe_fence_handle *fence;
 105
 106         fence = CALLOC_STRUCT(pipe_fence_handle);
 107         if (!fence)
 108                 return NULL;
 109
 110         pipe_reference_init(&fence->reference, 1);
 111
 112         fence->ctx = ctx;
 113         fence->screen = ctx->screen;
 114         fence->timestamp = timestamp;
 115         fence->fence_fd = fence_fd;
 116
 117         return fence;
 118 }