mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 09:12:24 +03:00
121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/*
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* Copyright (c) 2014-2020, NVIDIA CORPORATION. All rights reserved.
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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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <nvgpu/soc.h>
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#include <nvgpu/os_fence.h>
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#include <nvgpu/gk20a.h>
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#include <nvgpu/fence.h>
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#include <nvgpu/user_fence.h>
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#include "fence_priv.h"
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static struct nvgpu_fence_type *nvgpu_fence_from_ref(struct nvgpu_ref *ref)
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{
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return (struct nvgpu_fence_type *)((uintptr_t)ref -
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offsetof(struct nvgpu_fence_type, priv.ref));
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}
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static void nvgpu_fence_release(struct nvgpu_ref *ref)
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{
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struct nvgpu_fence_type *f = nvgpu_fence_from_ref(ref);
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struct nvgpu_fence_type_priv *pf = &f->priv;
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if (nvgpu_os_fence_is_initialized(&pf->os_fence)) {
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pf->os_fence.ops->drop_ref(&pf->os_fence);
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}
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pf->ops->release(f);
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}
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void nvgpu_fence_put(struct nvgpu_fence_type *f)
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{
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struct nvgpu_fence_type_priv *pf = &f->priv;
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nvgpu_ref_put(&pf->ref, nvgpu_fence_release);
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}
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struct nvgpu_fence_type *nvgpu_fence_get(struct nvgpu_fence_type *f)
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{
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struct nvgpu_fence_type_priv *pf = &f->priv;
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nvgpu_ref_get(&pf->ref);
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return f;
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}
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/*
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* Extract an object to be passed to the userspace as a result of a submitted
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* job. This must be balanced with a call to nvgpu_user_fence_release().
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*/
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struct nvgpu_user_fence nvgpu_fence_extract_user(struct nvgpu_fence_type *f)
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{
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struct nvgpu_fence_type_priv *pf = &f->priv;
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struct nvgpu_user_fence uf = (struct nvgpu_user_fence) {
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#ifdef CONFIG_TEGRA_GK20A_NVHOST
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.syncpt_id = pf->syncpt_id,
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.syncpt_value = pf->syncpt_value,
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#endif
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.os_fence = pf->os_fence,
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};
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/*
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* The os fence member has to live so it can be signaled when the job
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* completes. The returned user fence may live longer than that before
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* being safely attached to an fd if the job completes before a
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* submission ioctl finishes, or if it's stored for cde job state
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* tracking.
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*/
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if (nvgpu_os_fence_is_initialized(&pf->os_fence)) {
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pf->os_fence.ops->dup(&pf->os_fence);
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}
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return uf;
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}
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int nvgpu_fence_wait(struct gk20a *g, struct nvgpu_fence_type *f,
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u32 timeout)
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{
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struct nvgpu_fence_type_priv *pf = &f->priv;
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if (!nvgpu_platform_is_silicon(g)) {
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timeout = U32_MAX;
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}
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return pf->ops->wait(f, timeout);
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}
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bool nvgpu_fence_is_expired(struct nvgpu_fence_type *f)
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{
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struct nvgpu_fence_type_priv *pf = &f->priv;
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return pf->ops->is_expired(f);
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}
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void nvgpu_fence_init(struct nvgpu_fence_type *f,
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const struct nvgpu_fence_ops *ops,
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struct nvgpu_os_fence os_fence)
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{
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struct nvgpu_fence_type_priv *pf = &f->priv;
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nvgpu_ref_init(&pf->ref);
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pf->ops = ops;
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pf->os_fence = os_fence;
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}
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