2 * Copyright 2015 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
24 #include <linux/kthread.h>
25 #include <linux/wait.h>
26 #include <linux/sched.h>
28 #include "gpu_scheduler.h"
30 struct amd_sched_fence *amd_sched_fence_create(struct amd_sched_entity *s_entity, void *owner)
32 struct amd_sched_fence *fence = NULL;
35 fence = kmem_cache_zalloc(sched_fence_slab, GFP_KERNEL);
39 fence->sched = s_entity->sched;
40 spin_lock_init(&fence->lock);
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);
49 void amd_sched_fence_signal(struct amd_sched_fence *fence)
51 int ret = fence_signal(&fence->base);
53 FENCE_TRACE(&fence->base, "signaled from irq context\n");
55 FENCE_TRACE(&fence->base, "was already signaled\n");
58 static const char *amd_sched_fence_get_driver_name(struct fence *fence)
63 static const char *amd_sched_fence_get_timeline_name(struct fence *f)
65 struct amd_sched_fence *fence = to_amd_sched_fence(f);
66 return (const char *)fence->sched->name;
69 static bool amd_sched_fence_enable_signaling(struct fence *f)
74 static void amd_sched_fence_release(struct fence *f)
76 struct amd_sched_fence *fence = to_amd_sched_fence(f);
77 kmem_cache_free(sched_fence_slab, fence);
80 const struct fence_ops amd_sched_fence_ops = {
81 .get_driver_name = amd_sched_fence_get_driver_name,
82 .get_timeline_name = amd_sched_fence_get_timeline_name,
83 .enable_signaling = amd_sched_fence_enable_signaling,
85 .wait = fence_default_wait,
86 .release = amd_sched_fence_release,