1 /* $NetBSD: ioport.h,v 1.8 2021/12/19 12:37:07 riastradh Exp $ */
2
3 /*-
4 * Copyright (c) 2013 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Taylor R. Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #ifndef _LINUX_IOPORT_H_
33 #define _LINUX_IOPORT_H_
34
35 #include <sys/types.h>
36 #include <sys/bus.h>
37
38 #include <linux/types.h>
39
40 #define IORESOURCE_IO __BIT(0)
41 #define IORESOURCE_MEM __BIT(1)
42 #define IORESOURCE_IRQ __BIT(2)
43 #define IORESOURCE_UNSET __BIT(3)
44
45 struct resource {
46 bus_addr_t start;
47 bus_addr_t end; /* WARNING: Inclusive! */
48 const char *name;
49 unsigned int flags;
50 bus_space_tag_t r_bst; /* This milk is not organic. */
51 bus_space_handle_t r_bsh;
52 };
53
54 #define DEFINE_RES_MEM(START, SIZE) \
55 { .start = (START), .end = (START) + ((SIZE) - 1) }
56
57 static inline resource_size_t
resource_size(struct resource * resource)58 resource_size(struct resource *resource)
59 {
60 return resource->end - resource->start + 1;
61 }
62
63 static inline bool
resource_contains(struct resource * r1,struct resource * r2)64 resource_contains(struct resource *r1, struct resource *r2)
65 {
66 if (r1->r_bst != r2->r_bst)
67 return false;
68 return r1->start <= r2->start && r2->end <= r1->end;
69 }
70
71 static inline void
release_resource(struct resource * resource)72 release_resource(struct resource *resource)
73 {
74 bus_space_free(resource->r_bst, resource->r_bsh,
75 resource_size(resource));
76 }
77
78 #endif /* _LINUX_IOPORT_H_ */
79