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f556cb0c CZ |
1 | /* |
2 | * Copyright 2015 Advanced Micro Devices, Inc. | |
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 in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
20 | * OTHER DEALINGS IN THE SOFTWARE. | |
21 | * | |
22 | * | |
23 | */ | |
24 | #include <linux/kthread.h> | |
25 | #include <linux/wait.h> | |
26 | #include <linux/sched.h> | |
27 | #include <drm/drmP.h> | |
28 | #include "gpu_scheduler.h" | |
29 | ||
84f76ea6 | 30 | struct amd_sched_fence *amd_sched_fence_create(struct amd_sched_entity *s_entity, void *owner) |
f556cb0c CZ |
31 | { |
32 | struct amd_sched_fence *fence = NULL; | |
ce882e6d CK |
33 | unsigned seq; |
34 | ||
f556cb0c CZ |
35 | fence = kzalloc(sizeof(struct amd_sched_fence), GFP_KERNEL); |
36 | if (fence == NULL) | |
37 | return NULL; | |
84f76ea6 | 38 | fence->owner = owner; |
9b398fa5 | 39 | fence->sched = s_entity->sched; |
f556cb0c | 40 | spin_lock_init(&fence->lock); |
ce882e6d CK |
41 | |
42 | seq = atomic_inc_return(&s_entity->fence_seq); | |
43 | fence_init(&fence->base, &amd_sched_fence_ops, &fence->lock, | |
44 | s_entity->fence_context, seq); | |
45 | ||
f556cb0c CZ |
46 | return fence; |
47 | } | |
48 | ||
f556cb0c CZ |
49 | void amd_sched_fence_signal(struct amd_sched_fence *fence) |
50 | { | |
2983e5ce CK |
51 | int ret = fence_signal(&fence->base); |
52 | if (!ret) | |
53 | FENCE_TRACE(&fence->base, "signaled from irq context\n"); | |
54 | else | |
55 | FENCE_TRACE(&fence->base, "was already signaled\n"); | |
f556cb0c CZ |
56 | } |
57 | ||
58 | static const char *amd_sched_fence_get_driver_name(struct fence *fence) | |
59 | { | |
60 | return "amd_sched"; | |
61 | } | |
62 | ||
63 | static const char *amd_sched_fence_get_timeline_name(struct fence *f) | |
64 | { | |
65 | struct amd_sched_fence *fence = to_amd_sched_fence(f); | |
9b398fa5 | 66 | return (const char *)fence->sched->name; |
f556cb0c CZ |
67 | } |
68 | ||
69 | static bool amd_sched_fence_enable_signaling(struct fence *f) | |
70 | { | |
2983e5ce | 71 | return true; |
f556cb0c CZ |
72 | } |
73 | ||
74 | const struct fence_ops amd_sched_fence_ops = { | |
75 | .get_driver_name = amd_sched_fence_get_driver_name, | |
76 | .get_timeline_name = amd_sched_fence_get_timeline_name, | |
77 | .enable_signaling = amd_sched_fence_enable_signaling, | |
2983e5ce | 78 | .signaled = NULL, |
f556cb0c CZ |
79 | .wait = fence_default_wait, |
80 | .release = NULL, | |
81 | }; |