1 /*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice unmodified, this list of conditions, and the following
13 * disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #ifndef _LINUX_IO_MAPPING_H_
31 #define _LINUX_IO_MAPPING_H_
32
33 #include <linux/types.h>
34 #include <linux/io.h>
35
36 struct io_mapping;
37
38 static inline struct io_mapping *
io_mapping_create_wc(resource_size_t base,unsigned long size)39 io_mapping_create_wc(resource_size_t base, unsigned long size)
40 {
41
42 return ioremap_wc(base, size);
43 }
44
45 static inline void
io_mapping_free(struct io_mapping * mapping)46 io_mapping_free(struct io_mapping *mapping)
47 {
48
49 iounmap(mapping);
50 }
51
52 static inline void *
io_mapping_map_atomic_wc(struct io_mapping * mapping,unsigned long offset)53 io_mapping_map_atomic_wc(struct io_mapping *mapping, unsigned long offset)
54 {
55
56 return (((char *)mapping) + offset);
57 }
58
59 static inline void
io_mapping_unmap_atomic(void * vaddr)60 io_mapping_unmap_atomic(void *vaddr)
61 {
62
63 }
64
65 static inline void *
io_mapping_map_wc(struct io_mapping * mapping,unsigned long offset)66 io_mapping_map_wc(struct io_mapping *mapping, unsigned long offset)
67 {
68
69 return (((char *) mapping) + offset);
70 }
71
72 static inline void
io_mapping_unmap(void * vaddr)73 io_mapping_unmap(void *vaddr)
74 {
75
76 }
77
78 #endif /* _LINUX_IO_MAPPING_H_ */
79