diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/mmu_rb.h')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/mmu_rb.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/mmu_rb.h b/drivers/infiniband/hw/hfi1/mmu_rb.h new file mode 100644 index 000000000000..7a57b9c49d27 --- /dev/null +++ b/drivers/infiniband/hw/hfi1/mmu_rb.h @@ -0,0 +1,76 @@ +/* + * Copyright(c) 2016 Intel Corporation. + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * BSD LICENSE + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * - Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#ifndef _HFI1_MMU_RB_H +#define _HFI1_MMU_RB_H + +#include "hfi.h" + +struct mmu_rb_node { + unsigned long addr; + unsigned long len; + unsigned long __last; + struct rb_node node; +}; + +struct mmu_rb_ops { + bool (*filter)(struct mmu_rb_node *, unsigned long, unsigned long); + int (*insert)(struct rb_root *, struct mmu_rb_node *); + void (*remove)(struct rb_root *, struct mmu_rb_node *, + struct mm_struct *); + int (*invalidate)(struct rb_root *, struct mmu_rb_node *); +}; + +int hfi1_mmu_rb_register(struct rb_root *root, struct mmu_rb_ops *ops); +void hfi1_mmu_rb_unregister(struct rb_root *); +int hfi1_mmu_rb_insert(struct rb_root *, struct mmu_rb_node *); +void hfi1_mmu_rb_remove(struct rb_root *, struct mmu_rb_node *); +struct mmu_rb_node *hfi1_mmu_rb_search(struct rb_root *, unsigned long, + unsigned long); +struct mmu_rb_node *hfi1_mmu_rb_extract(struct rb_root *, unsigned long, + unsigned long); + +#endif /* _HFI1_MMU_RB_H */ |