Christopher Ferris | 6ea19f6 | 2013-11-20 19:48:48 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 Google, Inc. |
| 3 | * |
| 4 | * This program is distributed in the hope that it will be useful, |
| 5 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 6 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 7 | * GNU General Public License for more details. |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | #ifndef _UAPI_LINUX_SYNC_H |
| 12 | #define _UAPI_LINUX_SYNC_H |
| 13 | |
| 14 | #include <linux/ioctl.h> |
| 15 | #include <linux/types.h> |
| 16 | |
| 17 | /** |
| 18 | * struct sync_merge_data - data passed to merge ioctl |
| 19 | * @fd2: file descriptor of second fence |
| 20 | * @name: name of new fence |
| 21 | * @fence: returns the fd of the new fence to userspace |
| 22 | */ |
| 23 | struct sync_merge_data { |
| 24 | __s32 fd2; /* fd of second fence */ |
| 25 | char name[32]; /* name of new fence */ |
| 26 | __s32 fence; /* fd on newly created fence */ |
| 27 | }; |
| 28 | |
| 29 | /** |
| 30 | * struct sync_pt_info - detailed sync_pt information |
| 31 | * @len: length of sync_pt_info including any driver_data |
| 32 | * @obj_name: name of parent sync_timeline |
Christopher Ferris | 3147524 | 2014-09-02 17:43:51 -0700 | [diff] [blame] | 33 | * @driver_name: name of driver implementing the parent |
Christopher Ferris | 6ea19f6 | 2013-11-20 19:48:48 -0800 | [diff] [blame] | 34 | * @status: status of the sync_pt 0:active 1:signaled <0:error |
| 35 | * @timestamp_ns: timestamp of status change in nanoseconds |
Christopher Ferris | 3147524 | 2014-09-02 17:43:51 -0700 | [diff] [blame] | 36 | * @driver_data: any driver dependent data |
Christopher Ferris | 6ea19f6 | 2013-11-20 19:48:48 -0800 | [diff] [blame] | 37 | */ |
| 38 | struct sync_pt_info { |
| 39 | __u32 len; |
| 40 | char obj_name[32]; |
| 41 | char driver_name[32]; |
| 42 | __s32 status; |
| 43 | __u64 timestamp_ns; |
| 44 | |
| 45 | __u8 driver_data[0]; |
| 46 | }; |
| 47 | |
| 48 | /** |
| 49 | * struct sync_fence_info_data - data returned from fence info ioctl |
| 50 | * @len: ioctl caller writes the size of the buffer its passing in. |
Christopher Ferris | 3147524 | 2014-09-02 17:43:51 -0700 | [diff] [blame] | 51 | * ioctl returns length of sync_fence_data returned to userspace |
Christopher Ferris | 6ea19f6 | 2013-11-20 19:48:48 -0800 | [diff] [blame] | 52 | * including pt_info. |
| 53 | * @name: name of fence |
| 54 | * @status: status of fence. 1: signaled 0:active <0:error |
| 55 | * @pt_info: a sync_pt_info struct for every sync_pt in the fence |
| 56 | */ |
| 57 | struct sync_fence_info_data { |
| 58 | __u32 len; |
| 59 | char name[32]; |
| 60 | __s32 status; |
| 61 | |
| 62 | __u8 pt_info[0]; |
| 63 | }; |
| 64 | |
| 65 | #define SYNC_IOC_MAGIC '>' |
| 66 | |
| 67 | /** |
| 68 | * DOC: SYNC_IOC_WAIT - wait for a fence to signal |
| 69 | * |
| 70 | * pass timeout in milliseconds. Waits indefinitely timeout < 0. |
| 71 | */ |
| 72 | #define SYNC_IOC_WAIT _IOW(SYNC_IOC_MAGIC, 0, __s32) |
| 73 | |
| 74 | /** |
| 75 | * DOC: SYNC_IOC_MERGE - merge two fences |
| 76 | * |
| 77 | * Takes a struct sync_merge_data. Creates a new fence containing copies of |
| 78 | * the sync_pts in both the calling fd and sync_merge_data.fd2. Returns the |
| 79 | * new fence's fd in sync_merge_data.fence |
| 80 | */ |
| 81 | #define SYNC_IOC_MERGE _IOWR(SYNC_IOC_MAGIC, 1, struct sync_merge_data) |
| 82 | |
| 83 | /** |
| 84 | * DOC: SYNC_IOC_FENCE_INFO - get detailed information on a fence |
| 85 | * |
| 86 | * Takes a struct sync_fence_info_data with extra space allocated for pt_info. |
| 87 | * Caller should write the size of the buffer into len. On return, len is |
| 88 | * updated to reflect the total size of the sync_fence_info_data including |
| 89 | * pt_info. |
| 90 | * |
| 91 | * pt_info is a buffer containing sync_pt_infos for every sync_pt in the fence. |
Christopher Ferris | 3147524 | 2014-09-02 17:43:51 -0700 | [diff] [blame] | 92 | * To iterate over the sync_pt_infos, use the sync_pt_info.len field. |
Christopher Ferris | 6ea19f6 | 2013-11-20 19:48:48 -0800 | [diff] [blame] | 93 | */ |
| 94 | #define SYNC_IOC_FENCE_INFO _IOWR(SYNC_IOC_MAGIC, 2,\ |
| 95 | struct sync_fence_info_data) |
| 96 | |
| 97 | #endif /* _UAPI_LINUX_SYNC_H */ |