mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 09:12:24 +03:00
79 lines
2.5 KiB
C
79 lines
2.5 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/semaphore.h>
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#include <nvgpu/cond.h>
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#include <nvgpu/fence.h>
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#include <nvgpu/fence_sema.h>
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#include "fence_priv.h"
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static int nvgpu_fence_semaphore_wait(struct nvgpu_fence_type *f, u32 timeout)
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{
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struct nvgpu_fence_type_priv *pf = &f->priv;
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if (!nvgpu_semaphore_is_acquired(pf->semaphore)) {
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return 0;
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}
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return NVGPU_COND_WAIT_INTERRUPTIBLE(
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pf->semaphore_wq,
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!nvgpu_semaphore_is_acquired(pf->semaphore),
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timeout);
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}
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static bool nvgpu_fence_semaphore_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 !nvgpu_semaphore_is_acquired(pf->semaphore);
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}
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static void nvgpu_fence_semaphore_release(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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if (pf->semaphore != NULL) {
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nvgpu_semaphore_put(pf->semaphore);
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}
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}
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static const struct nvgpu_fence_ops nvgpu_fence_semaphore_ops = {
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.wait = nvgpu_fence_semaphore_wait,
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.is_expired = nvgpu_fence_semaphore_is_expired,
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.release = nvgpu_fence_semaphore_release,
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};
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/* This function takes ownership of the semaphore as well as the os_fence */
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void nvgpu_fence_from_semaphore(
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struct nvgpu_fence_type *f,
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struct nvgpu_semaphore *semaphore,
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struct nvgpu_cond *semaphore_wq,
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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_fence_init(f, &nvgpu_fence_semaphore_ops, os_fence);
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pf->semaphore = semaphore;
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pf->semaphore_wq = semaphore_wq;
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}
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