src/gallium/drivers/etnaviv/etnaviv_fence.c

   1 /*
   2  * Copyright (c) 2012-2015 Etnaviv Project
   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, sub license,
   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
  12  * next paragraph) shall be included in all copies or substantial portions
  13  * of the 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 NON-INFRINGEMENT. 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
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Wladimir J. van der Laan <laanwj@gmail.com>
  25  *    Rob Clark <robclark@freedesktop.org>
  26  */
  27
  28 #include <libsync.h>
  29
  30 #include "etnaviv_fence.h"
  31 #include "etnaviv_context.h"
  32 #include "etnaviv_screen.h"
  33
  34 #include "util/u_inlines.h"
  35 #include "util/u_memory.h"
  36
  37 struct pipe_fence_handle {
  38    struct pipe_reference reference;
  39    struct etna_screen *screen;
  40    int fence_fd;
  41    uint32_t timestamp;
  42 };
  43
  44 static void
  45 etna_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 static void
  53 etna_screen_fence_reference(struct pipe_screen *pscreen,
  54                             struct pipe_fence_handle **ptr,
  55                             struct pipe_fence_handle *fence)
  56 {
  57    if (pipe_reference(&(*ptr)->reference, &fence->reference))
  58       etna_fence_destroy(*ptr);
  59
  60    *ptr = fence;
  61 }
  62
  63 static bool
  64 etna_screen_fence_finish(struct pipe_screen *pscreen, struct pipe_context *ctx,
  65                          struct pipe_fence_handle *fence, uint64_t timeout)
  66 {
  67    if (fence->fence_fd != -1)
  68         return !sync_wait(fence->fence_fd, timeout / 1000000);
  69
  70    if (etna_pipe_wait_ns(fence->screen->pipe, fence->timestamp, timeout))
  71       return false;
  72
  73    return true;
  74 }
  75
  76 void
  77 etna_create_fence_fd(struct pipe_context *pctx,
  78                      struct pipe_fence_handle **pfence, int fd,
  79                      enum pipe_fd_type type)
  80 {
  81    assert(type == PIPE_FD_TYPE_NATIVE_SYNC);
  82    *pfence = etna_fence_create(pctx, dup(fd));
  83 }
  84
  85 void
  86 etna_fence_server_sync(struct pipe_context *pctx,
  87                        struct pipe_fence_handle *pfence)
  88 {
  89    struct etna_context *ctx = etna_context(pctx);
  90
  91    if (pfence->fence_fd != -1)
  92       sync_accumulate("etnaviv", &ctx->in_fence_fd, pfence->fence_fd);
  93 }
  94
  95 static int
  96 etna_screen_fence_get_fd(struct pipe_screen *pscreen,
  97                          struct pipe_fence_handle *pfence)
  98 {
  99    return dup(pfence->fence_fd);
 100 }
 101
 102 struct pipe_fence_handle *
 103 etna_fence_create(struct pipe_context *pctx, int fence_fd)
 104 {
 105    struct pipe_fence_handle *fence;
 106    struct etna_context *ctx = etna_context(pctx);
 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->screen = ctx->screen;
 115    fence->timestamp = etna_cmd_stream_timestamp(ctx->stream);
 116    fence->fence_fd = fence_fd;
 117
 118    return fence;
 119 }
 120
 121 void
 122 etna_fence_screen_init(struct pipe_screen *pscreen)
 123 {
 124    pscreen->fence_reference = etna_screen_fence_reference;
 125    pscreen->fence_finish = etna_screen_fence_finish;
 126    pscreen->fence_get_fd = etna_screen_fence_get_fd;
 127 }