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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */ |
64907b94 CC |
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 | #include <linux/ioctl.h> | |
16 | #include <linux/types.h> | |
17 | ||
18 | /** | |
19 | * struct sync_merge_data - data passed to merge ioctl | |
64907b94 | 20 | * @name: name of new fence |
2d75c88f | 21 | * @fd2: file descriptor of second fence |
64907b94 | 22 | * @fence: returns the fd of the new fence to userspace |
2d75c88f GP |
23 | * @flags: merge_data flags |
24 | * @pad: padding for 64-bit alignment, should always be zero | |
64907b94 CC |
25 | */ |
26 | struct sync_merge_data { | |
a64d6a68 GP |
27 | char name[32]; |
28 | __s32 fd2; | |
29 | __s32 fence; | |
2d75c88f GP |
30 | __u32 flags; |
31 | __u32 pad; | |
64907b94 CC |
32 | }; |
33 | ||
34 | /** | |
e1786348 | 35 | * struct sync_fence_info - detailed fence information |
64907b94 | 36 | * @obj_name: name of parent sync_timeline |
a64d6a68 GP |
37 | * @driver_name: name of driver implementing the parent |
38 | * @status: status of the fence 0:active 1:signaled <0:error | |
2d75c88f | 39 | * @flags: fence_info flags |
64907b94 | 40 | * @timestamp_ns: timestamp of status change in nanoseconds |
64907b94 | 41 | */ |
e1786348 | 42 | struct sync_fence_info { |
64907b94 CC |
43 | char obj_name[32]; |
44 | char driver_name[32]; | |
45 | __s32 status; | |
2d75c88f | 46 | __u32 flags; |
64907b94 | 47 | __u64 timestamp_ns; |
64907b94 CC |
48 | }; |
49 | ||
50 | /** | |
b5b24ac5 | 51 | * struct sync_file_info - data returned from fence info ioctl |
64907b94 CC |
52 | * @name: name of fence |
53 | * @status: status of fence. 1: signaled 0:active <0:error | |
2d75c88f GP |
54 | * @flags: sync_file_info flags |
55 | * @num_fences number of fences in the sync_file | |
56 | * @pad: padding for 64-bit alignment, should always be zero | |
57 | * @sync_fence_info: pointer to array of structs sync_fence_info with all | |
58 | * fences in the sync_file | |
64907b94 | 59 | */ |
b5b24ac5 | 60 | struct sync_file_info { |
64907b94 CC |
61 | char name[32]; |
62 | __s32 status; | |
2d75c88f GP |
63 | __u32 flags; |
64 | __u32 num_fences; | |
65 | __u32 pad; | |
64907b94 | 66 | |
2d75c88f | 67 | __u64 sync_fence_info; |
64907b94 CC |
68 | }; |
69 | ||
70 | #define SYNC_IOC_MAGIC '>' | |
71 | ||
2d75c88f GP |
72 | /** |
73 | * Opcodes 0, 1 and 2 were burned during a API change to avoid users of the | |
74 | * old API to get weird errors when trying to handling sync_files. The API | |
75 | * change happened during the de-stage of the Sync Framework when there was | |
76 | * no upstream users available. | |
77 | */ | |
78 | ||
64907b94 CC |
79 | /** |
80 | * DOC: SYNC_IOC_MERGE - merge two fences | |
81 | * | |
82 | * Takes a struct sync_merge_data. Creates a new fence containing copies of | |
83 | * the sync_pts in both the calling fd and sync_merge_data.fd2. Returns the | |
84 | * new fence's fd in sync_merge_data.fence | |
85 | */ | |
2d75c88f | 86 | #define SYNC_IOC_MERGE _IOWR(SYNC_IOC_MAGIC, 3, struct sync_merge_data) |
64907b94 CC |
87 | |
88 | /** | |
823d1bc1 | 89 | * DOC: SYNC_IOC_FILE_INFO - get detailed information on a sync_file |
64907b94 | 90 | * |
823d1bc1 EL |
91 | * Takes a struct sync_file_info. If num_fences is 0, the field is updated |
92 | * with the actual number of fences. If num_fences is > 0, the system will | |
93 | * use the pointer provided on sync_fence_info to return up to num_fences of | |
94 | * struct sync_fence_info, with detailed fence information. | |
64907b94 | 95 | */ |
2d75c88f | 96 | #define SYNC_IOC_FILE_INFO _IOWR(SYNC_IOC_MAGIC, 4, struct sync_file_info) |
64907b94 CC |
97 | |
98 | #endif /* _UAPI_LINUX_SYNC_H */ |