mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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2983e5cef3
Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
96 lines
3.0 KiB
C
96 lines
3.0 KiB
C
/*
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* Copyright 2015 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*
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*/
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#include <linux/kthread.h>
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#include <linux/wait.h>
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#include <linux/sched.h>
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#include <drm/drmP.h>
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#include "gpu_scheduler.h"
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static void amd_sched_fence_wait_cb(struct fence *f, struct fence_cb *cb)
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{
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struct amd_sched_fence *fence =
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container_of(cb, struct amd_sched_fence, cb);
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list_del_init(&fence->list);
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fence_put(&fence->base);
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}
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struct amd_sched_fence *amd_sched_fence_create(
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struct amd_sched_entity *s_entity)
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{
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struct amd_sched_fence *fence = NULL;
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fence = kzalloc(sizeof(struct amd_sched_fence), GFP_KERNEL);
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if (fence == NULL)
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return NULL;
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fence->v_seq = atomic64_inc_return(&s_entity->last_queued_v_seq);
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fence->entity = s_entity;
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spin_lock_init(&fence->lock);
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fence_init(&fence->base, &amd_sched_fence_ops,
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&fence->lock,
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s_entity->fence_context,
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fence->v_seq);
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fence_get(&fence->base);
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list_add_tail(&fence->list, &s_entity->fence_list);
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if (fence_add_callback(&fence->base,&fence->cb,
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amd_sched_fence_wait_cb)) {
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fence_put(&fence->base);
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kfree(fence);
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return NULL;
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}
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return fence;
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}
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void amd_sched_fence_signal(struct amd_sched_fence *fence)
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{
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int ret = fence_signal(&fence->base);
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if (!ret)
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FENCE_TRACE(&fence->base, "signaled from irq context\n");
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else
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FENCE_TRACE(&fence->base, "was already signaled\n");
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}
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static const char *amd_sched_fence_get_driver_name(struct fence *fence)
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{
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return "amd_sched";
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}
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static const char *amd_sched_fence_get_timeline_name(struct fence *f)
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{
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struct amd_sched_fence *fence = to_amd_sched_fence(f);
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return (const char *)fence->entity->name;
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}
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static bool amd_sched_fence_enable_signaling(struct fence *f)
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{
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return true;
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}
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const struct fence_ops amd_sched_fence_ops = {
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.get_driver_name = amd_sched_fence_get_driver_name,
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.get_timeline_name = amd_sched_fence_get_timeline_name,
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.enable_signaling = amd_sched_fence_enable_signaling,
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.signaled = NULL,
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.wait = fence_default_wait,
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.release = NULL,
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};
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