1/*
2 * Copyright (c) 2018-2019 Lima 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 */
24
25#include <fcntl.h>
26#include <libsync.h>
27
28#include "util/os_file.h"
29#include <util/u_memory.h>
30#include <util/u_inlines.h>
31
32#include "drm-uapi/lima_drm.h"
33
34#include "lima_screen.h"
35#include "lima_context.h"
36#include "lima_fence.h"
37#include "lima_job.h"
38
39struct pipe_fence_handle {
40   struct pipe_reference reference;
41   int fd;
42};
43
44static void
45lima_create_fence_fd(struct pipe_context *pctx,
46                     struct pipe_fence_handle **fence,
47                     int fd, enum pipe_fd_type type)
48{
49   assert(type == PIPE_FD_TYPE_NATIVE_SYNC);
50   *fence = lima_fence_create(os_dupfd_cloexec(fd));
51}
52
53static void
54lima_fence_server_sync(struct pipe_context *pctx,
55                       struct pipe_fence_handle *fence)
56{
57   struct lima_context *ctx = lima_context(pctx);
58
59   sync_accumulate("lima", &ctx->in_sync_fd, fence->fd);
60}
61
62void lima_fence_context_init(struct lima_context *ctx)
63{
64   ctx->base.create_fence_fd = lima_create_fence_fd;
65   ctx->base.fence_server_sync = lima_fence_server_sync;
66}
67
68struct pipe_fence_handle *
69lima_fence_create(int fd)
70{
71   struct pipe_fence_handle *fence;
72
73   fence = CALLOC_STRUCT(pipe_fence_handle);
74   if (!fence)
75      return NULL;
76
77   pipe_reference_init(&fence->reference, 1);
78   fence->fd = fd;
79
80   return fence;
81}
82
83static int
84lima_fence_get_fd(struct pipe_screen *pscreen,
85                  struct pipe_fence_handle *fence)
86{
87   return os_dupfd_cloexec(fence->fd);
88}
89
90static void
91lima_fence_destroy(struct pipe_fence_handle *fence)
92{
93   if (fence->fd >= 0)
94      close(fence->fd);
95   FREE(fence);
96}
97
98static void
99lima_fence_reference(struct pipe_screen *pscreen,
100                     struct pipe_fence_handle **ptr,
101                     struct pipe_fence_handle *fence)
102{
103   if (pipe_reference(&(*ptr)->reference, &fence->reference))
104      lima_fence_destroy(*ptr);
105   *ptr = fence;
106}
107
108static bool
109lima_fence_finish(struct pipe_screen *pscreen, struct pipe_context *pctx,
110                  struct pipe_fence_handle *fence, uint64_t timeout)
111{
112   return !sync_wait(fence->fd, timeout / 1000000);
113}
114
115void
116lima_fence_screen_init(struct lima_screen *screen)
117{
118   screen->base.fence_reference = lima_fence_reference;
119   screen->base.fence_finish = lima_fence_finish;
120   screen->base.fence_get_fd = lima_fence_get_fd;
121}
122