63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
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/*
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* include/uapi/linux/nvdev_fence.h
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*
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* Tegra PVA/DLA fence support
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*
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* Copyright (c) 2018-2019, NVIDIA Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LINUX_NVDEV_FENCE_H
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#define LINUX_NVDEV_FENCE_H
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#include <linux/types.h>
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/* used for the recording with keventlib */
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enum nvdev_fence_kind {
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NVDEV_FENCE_KIND_PRE = 0,
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NVDEV_FENCE_KIND_POST
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};
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/**
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* struct nvdev_fence structure for passing fence information
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*
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* @type: Type of the fence (syncpoint, sync fd or semaphore)
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* @type: fence action (wait or signal)
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* @syncpoint_index: Syncpoint id
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* @syncpoint_value: Value of syncpoint id
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* @sync_fd: Linux sync FD handle
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* @semaphore_handle: File handle to the semaphore memory buffer
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* @semaphore_offset: Offset to the semaphore within the buffer
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* @semaphore_value: Value of the semaphore
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*/
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struct nvdev_fence {
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__u32 type;
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#define NVDEV_FENCE_TYPE_SYNCPT 0
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#define NVDEV_FENCE_TYPE_SYNC_FD 1
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#define NVDEV_FENCE_TYPE_SEMAPHORE 2
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#define NVDEV_FENCE_TYPE_SEMAPHORE_TS 3
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__u32 action;
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#define NVDEV_FENCE_WAIT 0
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#define NVDEV_FENCE_SIGNAL 1
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__u32 syncpoint_index;
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__u32 syncpoint_value;
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__u32 sync_fd;
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__u32 semaphore_handle;
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__u32 semaphore_offset;
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__u32 semaphore_value;
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};
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#endif /* LINUX_NVDEV_FENCE_H */
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