The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/arm/include/bus_dma.h

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    1 /*      $NetBSD: bus.h,v 1.11 2003/07/28 17:35:54 thorpej Exp $ */
    2 
    3 /*-
    4  * Copyright (c) 1996, 1997, 1998, 2001 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
    9  * NASA Ames Research Center.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   30  * POSSIBILITY OF SUCH DAMAGE.
   31  */
   32 
   33 /*-
   34  * Copyright (c) 1996 Charles M. Hannum.  All rights reserved.
   35  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
   36  *
   37  * Redistribution and use in source and binary forms, with or without
   38  * modification, are permitted provided that the following conditions
   39  * are met:
   40  * 1. Redistributions of source code must retain the above copyright
   41  *    notice, this list of conditions and the following disclaimer.
   42  * 2. Redistributions in binary form must reproduce the above copyright
   43  *    notice, this list of conditions and the following disclaimer in the
   44  *    documentation and/or other materials provided with the distribution.
   45  * 3. All advertising materials mentioning features or use of this software
   46  *    must display the following acknowledgement:
   47  *      This product includes software developed by Christopher G. Demetriou
   48  *      for the NetBSD Project.
   49  * 4. The name of the author may not be used to endorse or promote products
   50  *    derived from this software without specific prior written permission
   51  *
   52  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   53  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   54  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   55  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   56  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   57  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   58  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   59  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   60  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   61  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   62  *
   63  * $FreeBSD: releng/9.0/sys/arm/include/bus_dma.h 203974 2010-02-16 21:59:17Z imp $
   64  */
   65 
   66 #ifndef _ARM_BUS_DMA_H
   67 #define _ARM_BUS_DMA_H
   68 
   69 #include <sys/bus_dma.h>
   70 
   71 /* Bus Space DMA macros */
   72 
   73 #define BUS_DMA_TAG_VALID(t)    ((t) != (bus_dma_tag_t)0)
   74 
   75 #ifdef _ARM32_BUS_DMA_PRIVATE
   76 /*
   77  *      arm32_dma_range
   78  *
   79  *      This structure describes a valid DMA range.
   80  */
   81 struct arm32_dma_range {
   82         bus_addr_t      dr_sysbase;     /* system base address */
   83         bus_addr_t      dr_busbase;     /* appears here on bus */
   84         bus_size_t      dr_len;         /* length of range */
   85 };
   86 
   87 /* _dm_buftype */
   88 #define ARM32_BUFTYPE_INVALID           0
   89 #define ARM32_BUFTYPE_LINEAR            1
   90 #define ARM32_BUFTYPE_MBUF              2
   91 #define ARM32_BUFTYPE_UIO               3
   92 #define ARM32_BUFTYPE_RAW               4
   93 
   94 struct arm32_dma_range  *bus_dma_get_range(void);
   95 int     bus_dma_get_range_nb(void);
   96 
   97 extern bus_dma_tag_t arm_root_dma_tag;
   98 
   99 #endif /* _ARM32_BUS_DMA_PRIVATE */
  100 
  101 #endif /* _ARM_BUS_DMA_H */

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