| /* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */ |
| /* |
| * Copyright (C) 2012 Google, Inc. |
| * |
| * 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. |
| * |
| */ |
| |
| #ifndef _UAPI_LINUX_SYNC_H |
| #define _UAPI_LINUX_SYNC_H |
| |
| #if defined(__linux__) |
| |
| #include <linux/ioctl.h> |
| #include <linux/types.h> |
| |
| #else /* One of the BSDs */ |
| |
| #include <stdint.h> |
| #include <sys/types.h> |
| #include <sys/ioccom.h> |
| |
| typedef int8_t __s8; |
| typedef uint8_t __u8; |
| typedef int16_t __s16; |
| typedef uint16_t __u16; |
| typedef int32_t __s32; |
| typedef uint32_t __u32; |
| typedef int64_t __s64; |
| typedef uint64_t __u64; |
| |
| #endif |
| |
| /** |
| * struct sync_merge_data - data passed to merge ioctl |
| * @name: name of new fence |
| * @fd2: file descriptor of second fence |
| * @fence: returns the fd of the new fence to userspace |
| * @flags: merge_data flags |
| * @pad: padding for 64-bit alignment, should always be zero |
| */ |
| struct sync_merge_data { |
| char name[32]; |
| __s32 fd2; |
| __s32 fence; |
| __u32 flags; |
| __u32 pad; |
| }; |
| |
| /** |
| * struct sync_fence_info - detailed fence information |
| * @obj_name: name of parent sync_timeline |
| * @driver_name: name of driver implementing the parent |
| * @status: status of the fence 0:active 1:signaled <0:error |
| * @flags: fence_info flags |
| * @timestamp_ns: timestamp of status change in nanoseconds |
| */ |
| struct sync_fence_info { |
| char obj_name[32]; |
| char driver_name[32]; |
| __s32 status; |
| __u32 flags; |
| __u64 timestamp_ns; |
| }; |
| |
| /** |
| * struct sync_file_info - data returned from fence info ioctl |
| * @name: name of fence |
| * @status: status of fence. 1: signaled 0:active <0:error |
| * @flags: sync_file_info flags |
| * @num_fences number of fences in the sync_file |
| * @pad: padding for 64-bit alignment, should always be zero |
| * @sync_fence_info: pointer to array of structs sync_fence_info with all |
| * fences in the sync_file |
| */ |
| struct sync_file_info { |
| char name[32]; |
| __s32 status; |
| __u32 flags; |
| __u32 num_fences; |
| __u32 pad; |
| |
| __u64 sync_fence_info; |
| }; |
| |
| #define SYNC_IOC_MAGIC '>' |
| |
| /** |
| * Opcodes 0, 1 and 2 were burned during a API change to avoid users of the |
| * old API to get weird errors when trying to handling sync_files. The API |
| * change happened during the de-stage of the Sync Framework when there was |
| * no upstream users available. |
| */ |
| |
| /** |
| * DOC: SYNC_IOC_MERGE - merge two fences |
| * |
| * Takes a struct sync_merge_data. Creates a new fence containing copies of |
| * the sync_pts in both the calling fd and sync_merge_data.fd2. Returns the |
| * new fence's fd in sync_merge_data.fence |
| */ |
| #define SYNC_IOC_MERGE _IOWR(SYNC_IOC_MAGIC, 3, struct sync_merge_data) |
| |
| /** |
| * DOC: SYNC_IOC_FILE_INFO - get detailed information on a sync_file |
| * |
| * Takes a struct sync_file_info. If num_fences is 0, the field is updated |
| * with the actual number of fences. If num_fences is > 0, the system will |
| * use the pointer provided on sync_fence_info to return up to num_fences of |
| * struct sync_fence_info, with detailed fence information. |
| */ |
| #define SYNC_IOC_FILE_INFO _IOWR(SYNC_IOC_MAGIC, 4, struct sync_file_info) |
| |
| #endif /* _UAPI_LINUX_SYNC_H */ |