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/u_memory.h>
29#include <util/u_inlines.h>
30
31#include "drm-uapi/lima_drm.h"
32
33#include "lima_screen.h"
34#include "lima_context.h"
35#include "lima_fence.h"
36#include "lima_submit.h"
37
38struct pipe_fence_handle {
39   struct pipe_reference reference;
40   int fd;
41};
42
43static void
44lima_create_fence_fd(struct pipe_context *pctx,
45                     struct pipe_fence_handle **fence,
46                     int fd, enum pipe_fd_type type)
47{
48   assert(type == PIPE_FD_TYPE_NATIVE_SYNC);
49   *fence = lima_fence_create(fcntl(fd, F_DUPFD_CLOEXEC, 3));
50}
51
52static void
53lima_fence_server_sync(struct pipe_context *pctx,
54                       struct pipe_fence_handle *fence)
55{
56   struct lima_context *ctx = lima_context(pctx);
57
58   lima_submit_add_in_sync(ctx->gp_submit, fence->fd);
59}
60
61void lima_fence_context_init(struct lima_context *ctx)
62{
63   ctx->base.create_fence_fd = lima_create_fence_fd;
64   ctx->base.fence_server_sync = lima_fence_server_sync;
65}
66
67struct pipe_fence_handle *
68lima_fence_create(int fd)
69{
70   struct pipe_fence_handle *fence;
71
72   fence = CALLOC_STRUCT(pipe_fence_handle);
73   if (!fence)
74      return NULL;
75
76   pipe_reference_init(&fence->reference, 1);
77   fence->fd = fd;
78
79   return fence;
80}
81
82static int
83lima_fence_get_fd(struct pipe_screen *pscreen,
84                  struct pipe_fence_handle *fence)
85{
86   return fcntl(fence->fd, F_DUPFD_CLOEXEC, 3);
87}
88
89static void
90lima_fence_destroy(struct pipe_fence_handle *fence)
91{
92   if (fence->fd >= 0)
93      close(fence->fd);
94   FREE(fence);
95}
96
97static void
98lima_fence_reference(struct pipe_screen *pscreen,
99                     struct pipe_fence_handle **ptr,
100                     struct pipe_fence_handle *fence)
101{
102   if (pipe_reference(&(*ptr)->reference, &fence->reference))
103      lima_fence_destroy(*ptr);
104   *ptr = fence;
105}
106
107static boolean
108lima_fence_finish(struct pipe_screen *pscreen, struct pipe_context *pctx,
109                  struct pipe_fence_handle *fence, uint64_t timeout)
110{
111   return !sync_wait(fence->fd, timeout / 1000000);
112}
113
114void
115lima_fence_screen_init(struct lima_screen *screen)
116{
117   screen->base.fence_reference = lima_fence_reference;
118   screen->base.fence_finish = lima_fence_finish;
119   screen->base.fence_get_fd = lima_fence_get_fd;
120}
121