1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2023 Serenity Cyber Security, LLC.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following 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 AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #ifndef _LINUXKPI_LINUX_IOPORT_H
29 #define _LINUXKPI_LINUX_IOPORT_H
30
31 #include <linux/compiler.h>
32 #include <linux/types.h>
33
34 #define DEFINE_RES_MEM(_start, _size) \
35 (struct resource) { \
36 .start = (_start), \
37 .end = (_start) + (_size) - 1, \
38 }
39
40 struct resource {
41 resource_size_t start;
42 resource_size_t end;
43 };
44
45 static inline resource_size_t
resource_size(const struct resource * r)46 resource_size(const struct resource *r)
47 {
48 return (r->end - r->start + 1);
49 }
50
51 static inline bool
resource_contains(struct resource * a,struct resource * b)52 resource_contains(struct resource *a, struct resource *b)
53 {
54 return (a->start <= b->start && a->end >= b->end);
55 }
56
57 #endif
58