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      1 /*	$NetBSD: i915_syncmap.h,v 1.2 2021/12/18 23:45:28 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright  2017 Intel Corporation
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice (including the next
     14  * paragraph) shall be included in all copies or substantial portions of the
     15  * Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     23  * IN THE SOFTWARE.
     24  *
     25  */
     26 
     27 #ifndef __I915_SYNCMAP_H__
     28 #define __I915_SYNCMAP_H__
     29 
     30 #include <linux/types.h>
     31 
     32 struct i915_syncmap;
     33 #define KSYNCMAP 16 /* radix of the tree, how many slots in each layer */
     34 
     35 void i915_syncmap_init(struct i915_syncmap **root);
     36 int i915_syncmap_set(struct i915_syncmap **root, u64 id, u32 seqno);
     37 bool i915_syncmap_is_later(struct i915_syncmap **root, u64 id, u32 seqno);
     38 void i915_syncmap_free(struct i915_syncmap **root);
     39 
     40 #endif /* __I915_SYNCMAP_H__ */
     41