IABSD.fr/xenocara/lib/mesa/include/drm-uapi/sync_file.h

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• Author : jsg
  Date : 2025-06-05 11:23:11
  Hash : 67d6f117
  Message : Import Mesa 25.0.7

• lib/mesa/include/drm-uapi/sync_file.h

• /*
   * SPDX-License-Identifier: GPL-1.0-or-later WITH Linux-syscall-note
   * Copyright 2012 Google, Inc.
   */
  
  #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 */