Commit | Line | Data |
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606b23ad ML |
1 | /* |
2 | * seqno-fence, using a dma-buf to synchronize fencing | |
3 | * | |
4 | * Copyright (C) 2012 Texas Instruments | |
5 | * Copyright (C) 2012-2014 Canonical Ltd | |
6 | * Authors: | |
7 | * Rob Clark <robdclark@gmail.com> | |
8 | * Maarten Lankhorst <maarten.lankhorst@canonical.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License version 2 as published by | |
12 | * the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
15 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
17 | * more details. | |
18 | */ | |
19 | ||
20 | #include <linux/slab.h> | |
21 | #include <linux/export.h> | |
22 | #include <linux/seqno-fence.h> | |
23 | ||
24 | static const char *seqno_fence_get_driver_name(struct fence *fence) | |
25 | { | |
26 | struct seqno_fence *seqno_fence = to_seqno_fence(fence); | |
5136629d | 27 | |
606b23ad ML |
28 | return seqno_fence->ops->get_driver_name(fence); |
29 | } | |
30 | ||
31 | static const char *seqno_fence_get_timeline_name(struct fence *fence) | |
32 | { | |
33 | struct seqno_fence *seqno_fence = to_seqno_fence(fence); | |
5136629d | 34 | |
606b23ad ML |
35 | return seqno_fence->ops->get_timeline_name(fence); |
36 | } | |
37 | ||
38 | static bool seqno_enable_signaling(struct fence *fence) | |
39 | { | |
40 | struct seqno_fence *seqno_fence = to_seqno_fence(fence); | |
5136629d | 41 | |
606b23ad ML |
42 | return seqno_fence->ops->enable_signaling(fence); |
43 | } | |
44 | ||
45 | static bool seqno_signaled(struct fence *fence) | |
46 | { | |
47 | struct seqno_fence *seqno_fence = to_seqno_fence(fence); | |
5136629d | 48 | |
606b23ad ML |
49 | return seqno_fence->ops->signaled && seqno_fence->ops->signaled(fence); |
50 | } | |
51 | ||
52 | static void seqno_release(struct fence *fence) | |
53 | { | |
54 | struct seqno_fence *f = to_seqno_fence(fence); | |
55 | ||
56 | dma_buf_put(f->sync_buf); | |
57 | if (f->ops->release) | |
58 | f->ops->release(fence); | |
59 | else | |
60 | fence_free(&f->base); | |
61 | } | |
62 | ||
5136629d JT |
63 | static signed long seqno_wait(struct fence *fence, bool intr, |
64 | signed long timeout) | |
606b23ad ML |
65 | { |
66 | struct seqno_fence *f = to_seqno_fence(fence); | |
5136629d | 67 | |
606b23ad ML |
68 | return f->ops->wait(fence, intr, timeout); |
69 | } | |
70 | ||
71 | const struct fence_ops seqno_fence_ops = { | |
72 | .get_driver_name = seqno_fence_get_driver_name, | |
73 | .get_timeline_name = seqno_fence_get_timeline_name, | |
74 | .enable_signaling = seqno_enable_signaling, | |
75 | .signaled = seqno_signaled, | |
76 | .wait = seqno_wait, | |
77 | .release = seqno_release, | |
78 | }; | |
79 | EXPORT_SYMBOL(seqno_fence_ops); |