1 /* $NetBSD: io.h,v 1.10 2022/10/25 23:33:18 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 _ASM_IO_H_
33 #define _ASM_IO_H_
34
35 #include <sys/cdefs.h>
36 #include <sys/systm.h>
37
38 #include <linux/string.h>
39 #include <linux/vmalloc.h>
40
41 #define memcpy_fromio(d,s,n) memcpy((d),__UNVOLATILE(s),(n))
42 #define memcpy_toio(d,s,n) memcpy(__UNVOLATILE(d),(s),(n))
43
44 #if defined(__NetBSD__) && defined(__aarch64__)
45 static inline void
memset_io(volatile void * b,int c,size_t len)46 memset_io(volatile void *b, int c, size_t len)
47 {
48 volatile uint8_t *ptr = b;
49
50 while (len > 0) {
51 *ptr++ = c;
52 len--;
53 }
54 }
55 #else
56 #define memset_io(b,c,n) memset(__UNVOLATILE(b),(c),(n))
57 #endif
58
59 /* XXX wrong place */
60 #define __force
61
62 #endif /* _ASM_IO_H_ */
63