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io.h revision 1.10 
      1  1.10  riastrad /*	$NetBSD: io.h,v 1.10 2022/10/25 23:33:18 riastradh Exp $	*/
      2   1.2  riastrad 
      3   1.2  riastrad /*-
      4   1.2  riastrad  * Copyright (c) 2013 The NetBSD Foundation, Inc.
      5   1.2  riastrad  * All rights reserved.
      6   1.2  riastrad  *
      7   1.2  riastrad  * This code is derived from software contributed to The NetBSD Foundation
      8   1.2  riastrad  * by Taylor R. Campbell.
      9   1.2  riastrad  *
     10   1.2  riastrad  * Redistribution and use in source and binary forms, with or without
     11   1.2  riastrad  * modification, are permitted provided that the following conditions
     12   1.2  riastrad  * are met:
     13   1.2  riastrad  * 1. Redistributions of source code must retain the above copyright
     14   1.2  riastrad  *    notice, this list of conditions and the following disclaimer.
     15   1.2  riastrad  * 2. Redistributions in binary form must reproduce the above copyright
     16   1.2  riastrad  *    notice, this list of conditions and the following disclaimer in the
     17   1.2  riastrad  *    documentation and/or other materials provided with the distribution.
     18   1.2  riastrad  *
     19   1.2  riastrad  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20   1.2  riastrad  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21   1.2  riastrad  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22   1.2  riastrad  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23   1.2  riastrad  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24   1.2  riastrad  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25   1.2  riastrad  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26   1.2  riastrad  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27   1.2  riastrad  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28   1.2  riastrad  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29   1.2  riastrad  * POSSIBILITY OF SUCH DAMAGE.
     30   1.2  riastrad  */
     31   1.2  riastrad 
     32   1.2  riastrad #ifndef _ASM_IO_H_
     33   1.2  riastrad #define _ASM_IO_H_
     34   1.2  riastrad 
     35   1.3  riastrad #include <sys/cdefs.h>
     36   1.3  riastrad #include <sys/systm.h>
     37   1.2  riastrad 
     38   1.4  riastrad #include <linux/string.h>
     39  1.10  riastrad #include <linux/vmalloc.h>
     40   1.4  riastrad 
     41   1.7  riastrad #define	memcpy_fromio(d,s,n)	memcpy((d),__UNVOLATILE(s),(n))
     42   1.7  riastrad #define	memcpy_toio(d,s,n)	memcpy(__UNVOLATILE(d),(s),(n))
     43   1.5  jmcneill 
     44   1.5  jmcneill #if defined(__NetBSD__) && defined(__aarch64__)
     45   1.8  riastrad static inline void
     46   1.7  riastrad memset_io(volatile void *b, int c, size_t len)
     47   1.5  jmcneill {
     48   1.7  riastrad 	volatile uint8_t *ptr = b;
     49   1.6  jmcneill 
     50   1.6  jmcneill 	while (len > 0) {
     51   1.5  jmcneill 		*ptr++ = c;
     52   1.6  jmcneill 		len--;
     53   1.5  jmcneill 	}
     54   1.5  jmcneill }
     55   1.5  jmcneill #else
     56   1.7  riastrad #define	memset_io(b,c,n)	memset(__UNVOLATILE(b),(c),(n))
     57   1.5  jmcneill #endif
     58   1.2  riastrad 
     59   1.3  riastrad /* XXX wrong place */
     60   1.3  riastrad #define	__force
     61   1.2  riastrad 
     62   1.2  riastrad #endif  /* _ASM_IO_H_ */
     63