1 /* $NetBSD: io.h,v 1.9 2022/02/14 00:28:33 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 40 #define memcpy_fromio(d,s,n) memcpy((d),__UNVOLATILE(s),(n)) 41 #define memcpy_toio(d,s,n) memcpy(__UNVOLATILE(d),(s),(n)) 42 43 #if defined(__NetBSD__) && defined(__aarch64__) 44 static inline void 45 memset_io(volatile void *b, int c, size_t len) 46 { 47 volatile uint8_t *ptr = b; 48 49 while (len > 0) { 50 *ptr++ = c; 51 len--; 52 } 53 } 54 #else 55 #define memset_io(b,c,n) memset(__UNVOLATILE(b),(c),(n)) 56 #endif 57 58 /* XXX wrong place */ 59 #define __force 60 61 #endif /* _ASM_IO_H_ */ 62