39 lines · c
1/*2 * Copyright © 2017 Intel Corporation3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice (including the next12 * paragraph) shall be included in all copies or substantial portions of the13 * Software.14 *15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS21 * IN THE SOFTWARE.22 *23 */24 25#ifndef __I915_SYNCMAP_H__26#define __I915_SYNCMAP_H__27 28#include <linux/types.h>29 30struct i915_syncmap;31#define KSYNCMAP 16 /* radix of the tree, how many slots in each layer */32 33void i915_syncmap_init(struct i915_syncmap **root);34int i915_syncmap_set(struct i915_syncmap **root, u64 id, u32 seqno);35bool i915_syncmap_is_later(struct i915_syncmap **root, u64 id, u32 seqno);36void i915_syncmap_free(struct i915_syncmap **root);37 38#endif /* __I915_SYNCMAP_H__ */39