etnaviv_fence.c revision 01e04c3f 
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
37struct pipe_fence_handle {
38   struct pipe_reference reference;
39   struct etna_screen *screen;
40   int fence_fd;
41   uint32_t timestamp;
42};
43
44static void
45etna_fence_destroy(struct pipe_fence_handle *fence)
46{
47   if (fence->fence_fd != -1)
48      close(fence->fence_fd);
49   FREE(fence);
50}
51
52static void
53etna_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
63static boolean
64etna_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
76void
77etna_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
85void
86etna_fence_server_sync(struct pipe_context *pctx,
87                       struct pipe_fence_handle *pfence)
88{
89   struct etna_context *ctx = etna_context(pctx);
90
91   sync_accumulate("etnaviv", &ctx->in_fence_fd, pfence->fence_fd);
92}
93
94static int
95etna_screen_fence_get_fd(struct pipe_screen *pscreen,
96                         struct pipe_fence_handle *pfence)
97{
98   return dup(pfence->fence_fd);
99}
100
101struct pipe_fence_handle *
102etna_fence_create(struct pipe_context *pctx, int fence_fd)
103{
104   struct pipe_fence_handle *fence;
105   struct etna_context *ctx = etna_context(pctx);
106
107   fence = CALLOC_STRUCT(pipe_fence_handle);
108   if (!fence)
109      return NULL;
110
111   pipe_reference_init(&fence->reference, 1);
112
113   fence->screen = ctx->screen;
114   fence->timestamp = etna_cmd_stream_timestamp(ctx->stream);
115   fence->fence_fd = fence_fd;
116
117   return fence;
118}
119
120void
121etna_fence_screen_init(struct pipe_screen *pscreen)
122{
123   pscreen->fence_reference = etna_screen_fence_reference;
124   pscreen->fence_finish = etna_screen_fence_finish;
125   pscreen->fence_get_fd = etna_screen_fence_get_fd;
126}
127