1 /* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */ 2 /* 3 * Copyright (C) 2012 Google, Inc. 4 * 5 * This program is distributed in the hope that it will be useful, 6 * but WITHOUT ANY WARRANTY; without even the implied warranty of 7 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 8 * GNU General Public License for more details. 9 * 10 */ 11 12 #ifndef _UAPI_LINUX_SYNC_H 13 #define _UAPI_LINUX_SYNC_H 14 15 #if defined(__linux__) 16 17 #include <linux/ioctl.h> 18 #include <linux/types.h> 19 20 #else /* One of the BSDs */ 21 22 #include <sys/types.h> 23 #include <sys/ioccom.h> 24 25 typedef int8_t __s8; 26 typedef uint8_t __u8; 27 typedef int16_t __s16; 28 typedef uint16_t __u16; 29 typedef int32_t __s32; 30 typedef uint32_t __u32; 31 typedef int64_t __s64; 32 typedef uint64_t __u64; 33 34 #endif 35 36 /** 37 * struct sync_merge_data - data passed to merge ioctl 38 * @name: name of new fence 39 * @fd2: file descriptor of second fence 40 * @fence: returns the fd of the new fence to userspace 41 * @flags: merge_data flags 42 * @pad: padding for 64-bit alignment, should always be zero 43 */ 44 struct sync_merge_data { 45 char name[32]; 46 __s32 fd2; 47 __s32 fence; 48 __u32 flags; 49 __u32 pad; 50 }; 51 52 /** 53 * struct sync_fence_info - detailed fence information 54 * @obj_name: name of parent sync_timeline 55 * @driver_name: name of driver implementing the parent 56 * @status: status of the fence 0:active 1:signaled <0:error 57 * @flags: fence_info flags 58 * @timestamp_ns: timestamp of status change in nanoseconds 59 */ 60 struct sync_fence_info { 61 char obj_name[32]; 62 char driver_name[32]; 63 __s32 status; 64 __u32 flags; 65 __u64 timestamp_ns; 66 }; 67 68 /** 69 * struct sync_file_info - data returned from fence info ioctl 70 * @name: name of fence 71 * @status: status of fence. 1: signaled 0:active <0:error 72 * @flags: sync_file_info flags 73 * @num_fences number of fences in the sync_file 74 * @pad: padding for 64-bit alignment, should always be zero 75 * @sync_fence_info: pointer to array of structs sync_fence_info with all 76 * fences in the sync_file 77 */ 78 struct sync_file_info { 79 char name[32]; 80 __s32 status; 81 __u32 flags; 82 __u32 num_fences; 83 __u32 pad; 84 85 __u64 sync_fence_info; 86 }; 87 88 #define SYNC_IOC_MAGIC '>' 89 90 /** 91 * Opcodes 0, 1 and 2 were burned during a API change to avoid users of the 92 * old API to get weird errors when trying to handling sync_files. The API 93 * change happened during the de-stage of the Sync Framework when there was 94 * no upstream users available. 95 */ 96 97 /** 98 * DOC: SYNC_IOC_MERGE - merge two fences 99 * 100 * Takes a struct sync_merge_data. Creates a new fence containing copies of 101 * the sync_pts in both the calling fd and sync_merge_data.fd2. Returns the 102 * new fence's fd in sync_merge_data.fence 103 */ 104 #define SYNC_IOC_MERGE _IOWR(SYNC_IOC_MAGIC, 3, struct sync_merge_data) 105 106 /** 107 * DOC: SYNC_IOC_FILE_INFO - get detailed information on a sync_file 108 * 109 * Takes a struct sync_file_info. If num_fences is 0, the field is updated 110 * with the actual number of fences. If num_fences is > 0, the system will 111 * use the pointer provided on sync_fence_info to return up to num_fences of 112 * struct sync_fence_info, with detailed fence information. 113 */ 114 #define SYNC_IOC_FILE_INFO _IOWR(SYNC_IOC_MAGIC, 4, struct sync_file_info) 115 116 #endif /* _UAPI_LINUX_SYNC_H */ 117