1/*-
2 * Copyright (c) 2017 Mellanox Technologies, Ltd.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice unmodified, this list of conditions, and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/11/sys/compat/linuxkpi/common/include/linux/pfn_t.h 328653 2018-02-01 13:01:44Z hselasky $
27 */
28
29#ifndef _LINUX_PFN_T_H_
30#define	_LINUX_PFN_T_H_
31
32#include <linux/mm.h>
33
34CTASSERT(PAGE_SHIFT > 4);
35
36#define	PFN_FLAGS_MASK (((u64)(PAGE_SIZE - 1)) << (64 - PAGE_SHIFT))
37#define	PFN_SG_CHAIN (1ULL << (64 - 1))
38#define	PFN_SG_LAST (1ULL << (64 - 2))
39#define	PFN_DEV (1ULL << (64 - 3))
40#define	PFN_MAP (1ULL << (64 - 4))
41
42static inline pfn_t
43__pfn_to_pfn_t(unsigned long pfn, u64 flags)
44{
45	pfn_t pfn_t = { pfn | (flags & PFN_FLAGS_MASK) };
46
47	return (pfn_t);
48}
49
50static inline pfn_t
51pfn_to_pfn_t(unsigned long pfn)
52{
53	return (__pfn_to_pfn_t (pfn, 0));
54}
55
56#endif					/* _LINUX_PFN_T_H_ */
57