aboutsummaryrefslogtreecommitdiffstats
path: root/src/gallium/drivers/freedreno/freedreno_fence.c
blob: 9d49f10ed94e444d4a27e2bbe2277396a140e0ab (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
/*
 * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Authors:
 *    Rob Clark <robclark@freedesktop.org>
 */

#include <libsync.h>

#include "util/u_inlines.h"

#include "freedreno_fence.h"
#include "freedreno_context.h"
#include "freedreno_util.h"

struct pipe_fence_handle {
	struct pipe_reference reference;
	/* fence holds a weak reference to the batch until the batch is flushed,
	 * at which point fd_fence_populate() is called and timestamp and possibly
	 * fence_fd become valid and the week reference is dropped.
	 */
	struct fd_batch *batch;
	struct fd_pipe *pipe;
	struct fd_screen *screen;
	int fence_fd;
	uint32_t timestamp;
};

static void fence_flush(struct pipe_fence_handle *fence)
{
	if (fence->batch)
		fd_batch_flush(fence->batch, true);
	debug_assert(!fence->batch);
}

void fd_fence_populate(struct pipe_fence_handle *fence,
		uint32_t timestamp, int fence_fd)
{
	if (!fence->batch)
		return;
	fence->timestamp = timestamp;
	fence->fence_fd = fence_fd;
	fence->batch = NULL;
}

static void fd_fence_destroy(struct pipe_fence_handle *fence)
{
	if (fence->fence_fd != -1)
		close(fence->fence_fd);
	fd_pipe_del(fence->pipe);
	FREE(fence);
}

void fd_fence_ref(struct pipe_fence_handle **ptr,
		struct pipe_fence_handle *pfence)
{
	if (pipe_reference(&(*ptr)->reference, &pfence->reference))
		fd_fence_destroy(*ptr);

	*ptr = pfence;
}

bool fd_fence_finish(struct pipe_screen *pscreen,
		struct pipe_context *ctx,
		struct pipe_fence_handle *fence,
		uint64_t timeout)
{
	fence_flush(fence);

	if (fence->fence_fd != -1) {
		int ret = sync_wait(fence->fence_fd, timeout / 1000000);
		return ret == 0;
	}

	if (fd_pipe_wait_timeout(fence->pipe, fence->timestamp, timeout))
		return false;

	return true;
}

static struct pipe_fence_handle * fence_create(struct fd_context *ctx,
		struct fd_batch *batch, uint32_t timestamp, int fence_fd)
{
	struct pipe_fence_handle *fence;

	fence = CALLOC_STRUCT(pipe_fence_handle);
	if (!fence)
		return NULL;

	pipe_reference_init(&fence->reference, 1);

	fence->batch = batch;
	fence->pipe = fd_pipe_ref(ctx->pipe);
	fence->screen = ctx->screen;
	fence->timestamp = timestamp;
	fence->fence_fd = fence_fd;

	return fence;
}

void fd_create_fence_fd(struct pipe_context *pctx,
		struct pipe_fence_handle **pfence, int fd,
		enum pipe_fd_type type)
{
	assert(type == PIPE_FD_TYPE_NATIVE_SYNC);
	*pfence = fence_create(fd_context(pctx), NULL, 0, dup(fd));
}

void fd_fence_server_sync(struct pipe_context *pctx,
		struct pipe_fence_handle *fence)
{
	struct fd_context *ctx = fd_context(pctx);
	struct fd_batch *batch = fd_context_batch(ctx);

	fence_flush(fence);

	/* if not an external fence, then nothing more to do without preemption: */
	if (fence->fence_fd == -1)
		return;

	if (sync_accumulate("freedreno", &batch->in_fence_fd, fence->fence_fd)) {
		/* error */
	}
}

int fd_fence_get_fd(struct pipe_screen *pscreen,
		struct pipe_fence_handle *fence)
{
	fence_flush(fence);
	return dup(fence->fence_fd);
}

struct pipe_fence_handle * fd_fence_create(struct fd_batch *batch)
{
	return fence_create(batch->ctx, batch, 0, -1);
}