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dma-mapping.h revision 1.3.30.1 
      1  1.3.30.1  christos /*	$NetBSD: dma-mapping.h,v 1.3.30.1 2019/06/10 22:08:31 christos 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 _LINUX_DMA_MAPPING_H_
     33       1.2  riastrad #define _LINUX_DMA_MAPPING_H_
     34       1.2  riastrad 
     35       1.2  riastrad #include <sys/bus.h>
     36       1.2  riastrad 
     37       1.2  riastrad typedef bus_addr_t dma_addr_t;
     38       1.2  riastrad 
     39       1.3  riastrad static inline uintmax_t
     40       1.3  riastrad DMA_BIT_MASK(unsigned nbits)
     41       1.3  riastrad {
     42       1.3  riastrad 
     43       1.3  riastrad 	return ~(~(uintmax_t)0 << nbits);
     44       1.3  riastrad }
     45       1.3  riastrad 
     46       1.2  riastrad #endif  /* _LINUX_DMA_MAPPING_H_ */
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