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/os_file.h"
35#include "util/u_inlines.h"
36#include "util/u_memory.h"
37
38struct pipe_fence_handle {
39   struct pipe_reference reference;
40   struct etna_screen *screen;
41   int fence_fd;
42   uint32_t timestamp;
43};
44
45static void
46etna_fence_destroy(struct pipe_fence_handle *fence)
47{
48   if (fence->fence_fd != -1)
49      close(fence->fence_fd);
50   FREE(fence);
51}
52
53static void
54etna_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
64static bool
65etna_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
77void
78etna_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, os_dupfd_cloexec(fd));
84}
85
86void
87etna_fence_server_sync(struct pipe_context *pctx,
88                       struct pipe_fence_handle *pfence)
89{
90   struct etna_context *ctx = etna_context(pctx);
91
92   if (pfence->fence_fd != -1)
93      sync_accumulate("etnaviv", &ctx->in_fence_fd, pfence->fence_fd);
94}
95
96static int
97etna_screen_fence_get_fd(struct pipe_screen *pscreen,
98                         struct pipe_fence_handle *pfence)
99{
100   return os_dupfd_cloexec(pfence->fence_fd);
101}
102
103struct pipe_fence_handle *
104etna_fence_create(struct pipe_context *pctx, int fence_fd)
105{
106   struct pipe_fence_handle *fence;
107   struct etna_context *ctx = etna_context(pctx);
108
109   fence = CALLOC_STRUCT(pipe_fence_handle);
110   if (!fence)
111      return NULL;
112
113   pipe_reference_init(&fence->reference, 1);
114
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
122void
123etna_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}
129