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Index of /FSS-BCZ/root/lib64/python3.9/wsgiref
Index of /FSS-BCZ/root/lib64/python3.9/wsgiref
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ƒlM;Â¾Æ /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* Framework for buffer objects that can be shared across devices/subsystems.
*
* Copyright(C) 2015 Intel Ltd
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see .
*/
#ifndef _DMA_BUF_UAPI_H_
#define _DMA_BUF_UAPI_H_
#include
/* begin/end dma-buf functions used for userspace mmap. */
struct dma_buf_sync {
__u64 flags;
};
#define DMA_BUF_SYNC_READ (1 << 0)
#define DMA_BUF_SYNC_WRITE (2 << 0)
#define DMA_BUF_SYNC_RW (DMA_BUF_SYNC_READ | DMA_BUF_SYNC_WRITE)
#define DMA_BUF_SYNC_START (0 << 2)
#define DMA_BUF_SYNC_END (1 << 2)
#define DMA_BUF_SYNC_VALID_FLAGS_MASK \
(DMA_BUF_SYNC_RW | DMA_BUF_SYNC_END)
#define DMA_BUF_NAME_LEN 32
/**
* struct dma_buf_export_sync_file - Get a sync_file from a dma-buf
*
* Userspace can perform a DMA_BUF_IOCTL_EXPORT_SYNC_FILE to retrieve the
* current set of fences on a dma-buf file descriptor as a sync_file. CPU
* waits via poll() or other driver-specific mechanisms typically wait on
* whatever fences are on the dma-buf at the time the wait begins. This
* is similar except that it takes a snapshot of the current fences on the
* dma-buf for waiting later instead of waiting immediately. This is
* useful for modern graphics APIs such as Vulkan which assume an explicit
* synchronization model but still need to inter-operate with dma-buf.
*
* The intended usa