xref: /openbmc/linux/drivers/gpu/drm/vc4/vc4_fence.c (revision 144b0979)
1 /*
2  * Copyright © 2017 Broadcom
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 (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * 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 NONINFRINGEMENT.  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 DEALINGS
21  * IN THE SOFTWARE.
22  */
23 
24 #include "vc4_drv.h"
25 
vc4_fence_get_driver_name(struct dma_fence * fence)26 static const char *vc4_fence_get_driver_name(struct dma_fence *fence)
27 {
28 	return "vc4";
29 }
30 
vc4_fence_get_timeline_name(struct dma_fence * fence)31 static const char *vc4_fence_get_timeline_name(struct dma_fence *fence)
32 {
33 	return "vc4-v3d";
34 }
35 
vc4_fence_signaled(struct dma_fence * fence)36 static bool vc4_fence_signaled(struct dma_fence *fence)
37 {
38 	struct vc4_fence *f = to_vc4_fence(fence);
39 	struct vc4_dev *vc4 = to_vc4_dev(f->dev);
40 
41 	return vc4->finished_seqno >= f->seqno;
42 }
43 
44 const struct dma_fence_ops vc4_fence_ops = {
45 	.get_driver_name = vc4_fence_get_driver_name,
46 	.get_timeline_name = vc4_fence_get_timeline_name,
47 	.signaled = vc4_fence_signaled,
48 };
49