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         /* fence holds a weak reference to the batch until the batch is flushed,
  40          * at which point fd_fence_populate() is called and timestamp and possibly
  41          * fence_fd become valid and the week reference is dropped.
  42          */
  43         struct fd_batch *batch;
  44         struct fd_pipe *pipe;
  45         struct fd_screen *screen;
  46         int fence_fd;
  47         uint32_t timestamp;
  48 };
  49
  50 static void fence_flush(struct pipe_fence_handle *fence)
  51 {
  52         if (fence->batch)
  53                 fd_batch_flush(fence->batch, true, true);
  54         debug_assert(!fence->batch);
  55 }
  56
  57 void fd_fence_populate(struct pipe_fence_handle *fence,
  58                 uint32_t timestamp, int fence_fd)
  59 {
  60         if (!fence->batch)
  61                 return;
  62         fence->timestamp = timestamp;
  63         fence->fence_fd = fence_fd;
  64         fence->batch = NULL;
  65 }
  66
  67 static void fd_fence_destroy(struct pipe_fence_handle *fence)
  68 {
  69         if (fence->fence_fd != -1)
  70                 close(fence->fence_fd);
  71         fd_pipe_del(fence->pipe);
  72         FREE(fence);
  73 }
  74
  75 void fd_fence_ref(struct pipe_screen *pscreen,
  76                 struct pipe_fence_handle **ptr,
  77                 struct pipe_fence_handle *pfence)
  78 {
  79         if (pipe_reference(&(*ptr)->reference, &pfence->reference))
  80                 fd_fence_destroy(*ptr);
  81
  82         *ptr = pfence;
  83 }
  84
  85 boolean fd_fence_finish(struct pipe_screen *pscreen,
  86                 struct pipe_context *ctx,
  87                 struct pipe_fence_handle *fence,
  88                 uint64_t timeout)
  89 {
  90         fence_flush(fence);
  91
  92         if (fence->fence_fd != -1) {
  93                 int ret = sync_wait(fence->fence_fd, timeout / 1000000);
  94                 return ret == 0;
  95         }
  96
  97         if (fd_pipe_wait_timeout(fence->pipe, fence->timestamp, timeout))
  98                 return false;
  99
 100         return true;
 101 }
 102
 103 static struct pipe_fence_handle * fence_create(struct fd_context *ctx,
 104                 struct fd_batch *batch, uint32_t timestamp, int fence_fd)
 105 {
 106         struct pipe_fence_handle *fence;
 107
 108         fence = CALLOC_STRUCT(pipe_fence_handle);
 109         if (!fence)
 110                 return NULL;
 111
 112         pipe_reference_init(&fence->reference, 1);
 113
 114         fence->batch = batch;
 115         fence->pipe = fd_pipe_ref(ctx->pipe);
 116         fence->screen = ctx->screen;
 117         fence->timestamp = timestamp;
 118         fence->fence_fd = fence_fd;
 119
 120         return fence;
 121 }
 122
 123 void fd_create_fence_fd(struct pipe_context *pctx,
 124                 struct pipe_fence_handle **pfence, int fd,
 125                 enum pipe_fd_type type)
 126 {
 127         assert(type == PIPE_FD_TYPE_NATIVE_SYNC);
 128         *pfence = fence_create(fd_context(pctx), NULL, 0, dup(fd));
 129 }
 130
 131 void fd_fence_server_sync(struct pipe_context *pctx,
 132                 struct pipe_fence_handle *fence)
 133 {
 134         struct fd_context *ctx = fd_context(pctx);
 135         struct fd_batch *batch = ctx->batch;
 136
 137         fence_flush(fence);
 138
 139         if (sync_accumulate("freedreno", &batch->in_fence_fd, fence->fence_fd)) {
 140                 /* error */
 141         }
 142 }
 143
 144 int fd_fence_get_fd(struct pipe_screen *pscreen,
 145                 struct pipe_fence_handle *fence)
 146 {
 147         fence_flush(fence);
 148         return dup(fence->fence_fd);
 149 }
 150
 151 struct pipe_fence_handle * fd_fence_create(struct fd_batch *batch)
 152 {
 153         return fence_create(batch->ctx, batch, 0, -1);
 154 }