LXR linux/drivers/staging/rdma/hfi1/mmu

   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
  52struct mmu_rb_node {
  53        unsigned long addr;
  54        unsigned long len;
  55        unsigned long __last;
  56        struct rb_node node;
  57};
  58
  59struct 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
  67int hfi1_mmu_rb_register(struct rb_root *root, struct mmu_rb_ops *ops);
  68void hfi1_mmu_rb_unregister(struct rb_root *);
  69int hfi1_mmu_rb_insert(struct rb_root *, struct mmu_rb_node *);
  70void hfi1_mmu_rb_remove(struct rb_root *, struct mmu_rb_node *);
  71struct mmu_rb_node *hfi1_mmu_rb_search(struct rb_root *, unsigned long,
  72                                       unsigned long);
  73
  74#endif /* _HFI1_MMU_RB_H */
  75