| /* 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 <http://www.gnu.org/licenses/>. |
| */ |
| |
| #ifndef _DMA_BUF_UAPI_H_ |
| #define _DMA_BUF_UAPI_H_ |
| |
| #include <linux/types.h> |
| |
| /* 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 |
| |
| #define DMA_BUF_BASE 'b' |
| #define DMA_BUF_IOCTL_SYNC _IOW(DMA_BUF_BASE, 0, struct dma_buf_sync) |
| |
| /* 32/64bitness of this uapi was botched in android, there's no difference |
| * between them in actual uapi, they're just different numbers. |
| */ |
| #define DMA_BUF_SET_NAME _IOW(DMA_BUF_BASE, 1, const char *) |
| #define DMA_BUF_SET_NAME_A _IOW(DMA_BUF_BASE, 1, u32) |
| #define DMA_BUF_SET_NAME_B _IOW(DMA_BUF_BASE, 1, u64) |
| |
| #endif |