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

     /*      $NetBSD: bus.h,v 1.11 2003/07/28 17:35:54 thorpej Exp $ */
     
     /*-
      * Copyright (c) 1996, 1997, 1998, 2001 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      * NASA Ames Research Center.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    /*-
     * Copyright (c) 1996 Charles M. Hannum.  All rights reserved.
     * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Christopher G. Demetriou
     *      for the NetBSD Project.
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD: releng/9.0/sys/arm/include/bus_dma.h 203974 2010-02-16 21:59:17Z imp $
     */
    
    #ifndef _ARM_BUS_DMA_H
    #define _ARM_BUS_DMA_H
    
    #include <sys/bus_dma.h>
    
    /* Bus Space DMA macros */
    
    #define BUS_DMA_TAG_VALID(t)    ((t) != (bus_dma_tag_t)0)
    
    #ifdef _ARM32_BUS_DMA_PRIVATE
    /*
     *      arm32_dma_range
     *
     *      This structure describes a valid DMA range.
     */
    struct arm32_dma_range {
            bus_addr_t      dr_sysbase;     /* system base address */
            bus_addr_t      dr_busbase;     /* appears here on bus */
            bus_size_t      dr_len;         /* length of range */
    };
    
    /* _dm_buftype */
    #define ARM32_BUFTYPE_INVALID           0
    #define ARM32_BUFTYPE_LINEAR            1
    #define ARM32_BUFTYPE_MBUF              2
    #define ARM32_BUFTYPE_UIO               3
    #define ARM32_BUFTYPE_RAW               4
    
    struct arm32_dma_range  *bus_dma_get_range(void);
    int     bus_dma_get_range_nb(void);
    
    extern bus_dma_tag_t arm_root_dma_tag;
    
    #endif /* _ARM32_BUS_DMA_PRIVATE */
   
   #endif /* _ARM_BUS_DMA_H */

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