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116 lines
3.1 KiB
116 lines
3.1 KiB
/* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */ |
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/* |
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* Copyright (C) 2012 Google, Inc. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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*/ |
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#ifndef _UAPI_LINUX_SYNC_H |
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#define _UAPI_LINUX_SYNC_H |
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#if defined(__linux__) |
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#include <linux/ioctl.h> |
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#include <linux/types.h> |
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#else /* One of the BSDs */ |
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#include <sys/types.h> |
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#include <sys/ioccom.h> |
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typedef int8_t __s8; |
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typedef uint8_t __u8; |
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typedef int16_t __s16; |
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typedef uint16_t __u16; |
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typedef int32_t __s32; |
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typedef uint32_t __u32; |
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typedef int64_t __s64; |
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typedef uint64_t __u64; |
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#endif |
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/** |
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* struct sync_merge_data - data passed to merge ioctl |
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* @name: name of new fence |
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* @fd2: file descriptor of second fence |
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* @fence: returns the fd of the new fence to userspace |
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* @flags: merge_data flags |
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* @pad: padding for 64-bit alignment, should always be zero |
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*/ |
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struct sync_merge_data { |
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char name[32]; |
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__s32 fd2; |
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__s32 fence; |
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__u32 flags; |
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__u32 pad; |
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}; |
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/** |
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* struct sync_fence_info - detailed fence information |
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* @obj_name: name of parent sync_timeline |
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* @driver_name: name of driver implementing the parent |
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* @status: status of the fence 0:active 1:signaled <0:error |
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* @flags: fence_info flags |
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* @timestamp_ns: timestamp of status change in nanoseconds |
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*/ |
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struct sync_fence_info { |
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char obj_name[32]; |
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char driver_name[32]; |
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__s32 status; |
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__u32 flags; |
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__u64 timestamp_ns; |
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}; |
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/** |
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* struct sync_file_info - data returned from fence info ioctl |
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* @name: name of fence |
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* @status: status of fence. 1: signaled 0:active <0:error |
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* @flags: sync_file_info flags |
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* @num_fences number of fences in the sync_file |
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* @pad: padding for 64-bit alignment, should always be zero |
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* @sync_fence_info: pointer to array of structs sync_fence_info with all |
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* fences in the sync_file |
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*/ |
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struct sync_file_info { |
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char name[32]; |
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__s32 status; |
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__u32 flags; |
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__u32 num_fences; |
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__u32 pad; |
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__u64 sync_fence_info; |
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}; |
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#define SYNC_IOC_MAGIC '>' |
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/** |
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* Opcodes 0, 1 and 2 were burned during a API change to avoid users of the |
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* old API to get weird errors when trying to handling sync_files. The API |
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* change happened during the de-stage of the Sync Framework when there was |
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* no upstream users available. |
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*/ |
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/** |
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* DOC: SYNC_IOC_MERGE - merge two fences |
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* |
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* Takes a struct sync_merge_data. Creates a new fence containing copies of |
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* the sync_pts in both the calling fd and sync_merge_data.fd2. Returns the |
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* new fence's fd in sync_merge_data.fence |
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*/ |
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#define SYNC_IOC_MERGE _IOWR(SYNC_IOC_MAGIC, 3, struct sync_merge_data) |
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/** |
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* DOC: SYNC_IOC_FILE_INFO - get detailed information on a sync_file |
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* |
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* Takes a struct sync_file_info. If num_fences is 0, the field is updated |
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* with the actual number of fences. If num_fences is > 0, the system will |
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* use the pointer provided on sync_fence_info to return up to num_fences of |
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* struct sync_fence_info, with detailed fence information. |
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*/ |
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#define SYNC_IOC_FILE_INFO _IOWR(SYNC_IOC_MAGIC, 4, struct sync_file_info) |
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#endif /* _UAPI_LINUX_SYNC_H */
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