1/****************************************************************************
2 * Copyright (C) 2015 Intel Corporation.   All Rights Reserved.
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, sublicense,
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 shall be included
12 * in all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 ***************************************************************************/
21
22#ifndef SWR_FENCE_H
23#define SWR_FENCE_H
24
25#include "pipe/p_state.h"
26#include "util/u_inlines.h"
27
28#include "swr_fence_work.h"
29
30struct pipe_screen;
31
32struct swr_fence {
33   struct pipe_reference reference;
34
35   uint64_t read;
36   uint64_t write;
37
38   unsigned pending;
39
40   unsigned id; /* Just for reference */
41
42   struct {
43      uint32_t count;
44      struct swr_fence_work head;
45      struct swr_fence_work *tail;
46   } work;
47};
48
49
50static inline struct swr_fence *
51swr_fence(struct pipe_fence_handle *fence)
52{
53   return (struct swr_fence *)fence;
54}
55
56
57static INLINE boolean
58swr_is_fence_done(struct pipe_fence_handle *fence_handle)
59{
60   struct swr_fence *fence = swr_fence(fence_handle);
61   return (fence->read == fence->write);
62}
63
64static INLINE boolean
65swr_is_fence_pending(struct pipe_fence_handle *fence_handle)
66{
67   return swr_fence(fence_handle)->pending;
68}
69
70
71void swr_fence_init(struct pipe_screen *screen);
72
73struct pipe_fence_handle *swr_fence_create();
74
75void swr_fence_reference(struct pipe_screen *screen,
76                         struct pipe_fence_handle **ptr,
77                         struct pipe_fence_handle *f);
78
79boolean swr_fence_finish(struct pipe_screen *screen,
80                         struct pipe_context *ctx,
81                         struct pipe_fence_handle *fence_handle,
82                         uint64_t timeout);
83
84void
85swr_fence_submit(struct swr_context *ctx, struct pipe_fence_handle *fence);
86
87uint64_t swr_get_timestamp(struct pipe_screen *screen);
88
89#endif
90