1 /*
2  * Copyright(c) 2016 Intel Corporation.
3  *
4  * This file is provided under a dual BSD/GPLv2 license.  When using or
5  * redistributing this file, you may do so under either license.
6  *
7  * GPL LICENSE SUMMARY
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of version 2 of the GNU General Public License as
11  * published by the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * BSD LICENSE
19  *
20  * Redistribution and use in source and binary forms, with or without
21  * modification, are permitted provided that the following conditions
22  * are met:
23  *
24  *  - Redistributions of source code must retain the above copyright
25  *    notice, this list of conditions and the following disclaimer.
26  *  - Redistributions in binary form must reproduce the above copyright
27  *    notice, this list of conditions and the following disclaimer in
28  *    the documentation and/or other materials provided with the
29  *    distribution.
30  *  - Neither the name of Intel Corporation nor the names of its
31  *    contributors may be used to endorse or promote products derived
32  *    from this software without specific prior written permission.
33  *
34  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
35  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
36  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
37  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
38  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
39  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
40  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
41  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
42  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
43  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
44  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45  *
46  */
47 #ifndef _HFI1_MMU_RB_H
48 #define _HFI1_MMU_RB_H
49 
50 #include "hfi.h"
51 
52 struct mmu_rb_node {
53 	unsigned long addr;
54 	unsigned long len;
55 	unsigned long __last;
56 	struct rb_node node;
57 };
58 
59 struct mmu_rb_ops {
60 	bool (*filter)(struct mmu_rb_node *, unsigned long, unsigned long);
61 	int (*insert)(struct rb_root *, struct mmu_rb_node *);
62 	void (*remove)(struct rb_root *, struct mmu_rb_node *,
63 		       struct mm_struct *);
64 	int (*invalidate)(struct rb_root *, struct mmu_rb_node *);
65 };
66 
67 int hfi1_mmu_rb_register(struct rb_root *root, struct mmu_rb_ops *ops);
68 void hfi1_mmu_rb_unregister(struct rb_root *);
69 int hfi1_mmu_rb_insert(struct rb_root *, struct mmu_rb_node *);
70 void hfi1_mmu_rb_remove(struct rb_root *, struct mmu_rb_node *);
71 struct mmu_rb_node *hfi1_mmu_rb_search(struct rb_root *, unsigned long,
72 				       unsigned long);
73 struct mmu_rb_node *hfi1_mmu_rb_extract(struct rb_root *, unsigned long,
74 					unsigned long);
75 
76 #endif /* _HFI1_MMU_RB_H */
77