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_context *ctx;
  40    struct etna_screen *screen;
  41    int fence_fd;
  42    uint32_t timestamp;
  43 };
  44
  45 static void
  46 etna_fence_destroy(struct pipe_fence_handle *fence)
  47 {
  48    if (fence->fence_fd != -1)
  49       close(fence->fence_fd);
  50    FREE(fence);
  51 }
  52
  53 static void
  54 etna_screen_fence_reference(struct pipe_screen *pscreen,
  55                             struct pipe_fence_handle **ptr,
  56                             struct pipe_fence_handle *fence)
  57 {
  58    if (pipe_reference(&(*ptr)->reference, &fence->reference))
  59       etna_fence_destroy(*ptr);
  60
  61    *ptr = fence;
  62 }
  63
  64 static boolean
  65 etna_screen_fence_finish(struct pipe_screen *pscreen, struct pipe_context *ctx,
  66                          struct pipe_fence_handle *fence, uint64_t timeout)
  67 {
  68    if (fence->fence_fd != -1)
  69         return !sync_wait(fence->fence_fd, timeout / 1000000);
  70
  71    if (etna_pipe_wait_ns(fence->screen->pipe, fence->timestamp, timeout))
  72       return false;
  73
  74    return true;
  75 }
  76
  77 void
  78 etna_create_fence_fd(struct pipe_context *pctx,
  79                      struct pipe_fence_handle **pfence, int fd,
  80                      enum pipe_fd_type type)
  81 {
  82    assert(type == PIPE_FD_TYPE_NATIVE_SYNC);
  83    *pfence = etna_fence_create(pctx, dup(fd));
  84 }
  85
  86 void
  87 etna_fence_server_sync(struct pipe_context *pctx,
  88                        struct pipe_fence_handle *pfence)
  89 {
  90    struct etna_context *ctx = etna_context(pctx);
  91
  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->ctx = ctx;
 115    fence->screen = ctx->screen;
 116    fence->timestamp = etna_cmd_stream_timestamp(ctx->stream);
 117    fence->fence_fd = fence_fd;
 118
 119    return fence;
 120 }
 121
 122 void
 123 etna_fence_screen_init(struct pipe_screen *pscreen)
 124 {
 125    pscreen->fence_reference = etna_screen_fence_reference;
 126    pscreen->fence_finish = etna_screen_fence_finish;
 127    pscreen->fence_get_fd = etna_screen_fence_get_fd;
 128 }