FreeBSD/Linux Kernel Cross Reference
sys/sparc64/include/bus_dma.h

     /*-
      * 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) 1997-1999 Eduardo E. Horvath. All rights reserved.
     * 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.
     *
     *      from: NetBSD: bus.h,v 1.58 2008/04/28 20:23:36 martin Exp
     *      and
     *      from: FreeBSD: src/sys/alpha/include/bus.h,v 1.9 2001/01/09
     *
     * $FreeBSD: releng/10.1/sys/sparc64/include/bus_dma.h 259510 2013-12-17 13:38:21Z kib $
     */
    
    #ifndef _SPARC64_BUS_DMA_H
    #define _SPARC64_BUS_DMA_H
    
    #include <sys/bus_dma.h>
    
    /* DMA support */
    
    /*
     * Method table for a bus_dma_tag.
     */
    struct bus_dma_methods {
            int     (*dm_dmamap_create)(bus_dma_tag_t, int, bus_dmamap_t *);
            int     (*dm_dmamap_destroy)(bus_dma_tag_t, bus_dmamap_t);
            int     (*dm_dmamap_load_phys)(bus_dma_tag_t dmat, bus_dmamap_t map,
                vm_paddr_t buf, bus_size_t buflen, int flags,
                bus_dma_segment_t *segs, int *segp);
            int     (*dm_dmamap_load_buffer)(bus_dma_tag_t dmat, bus_dmamap_t map,
                void *buf, bus_size_t buflen, struct pmap *pmap, int flags,
                bus_dma_segment_t *segs, int *segp);
            void    (*dm_dmamap_waitok)(bus_dma_tag_t dmat, bus_dmamap_t map,
                struct memdesc *mem, bus_dmamap_callback_t *callback,
                void *callback_arg);
            bus_dma_segment_t *(*dm_dmamap_complete)(bus_dma_tag_t dmat,
                bus_dmamap_t map, bus_dma_segment_t *segs, int nsegs, int error);
            void    (*dm_dmamap_unload)(bus_dma_tag_t, bus_dmamap_t);
            void    (*dm_dmamap_sync)(bus_dma_tag_t, bus_dmamap_t,
                bus_dmasync_op_t);
            int     (*dm_dmamem_alloc)(bus_dma_tag_t, void **, int, bus_dmamap_t *);
            void    (*dm_dmamem_free)(bus_dma_tag_t, void *, bus_dmamap_t);
    };
    
    /*
    * bus_dma_tag_t
    *
    * A machine-dependent opaque type describing the implementation of
    * DMA for a given bus.
    */
   struct bus_dma_tag {
           void            *dt_cookie;             /* cookie used in the guts */
           bus_dma_tag_t   dt_parent;
           bus_size_t      dt_alignment;
           bus_addr_t      dt_boundary;
           bus_addr_t      dt_lowaddr;
           bus_addr_t      dt_highaddr;
           bus_dma_filter_t        *dt_filter;
           void            *dt_filterarg;
           bus_size_t      dt_maxsize;
           int             dt_nsegments;
           bus_size_t      dt_maxsegsz;
           int             dt_flags;
           int             dt_ref_count;
           int             dt_map_count;
           bus_dma_lock_t  *dt_lockfunc;
           void *          *dt_lockfuncarg;
           bus_dma_segment_t *dt_segments;
   
           struct bus_dma_methods  *dt_mt;
   };
   
   #define bus_dmamap_create(t, f, p)                                      \
           ((t)->dt_mt->dm_dmamap_create((t), (f), (p)))
   #define bus_dmamap_destroy(t, p)                                        \
           ((t)->dt_mt->dm_dmamap_destroy((t), (p)))
   #define _bus_dmamap_load_phys(t, m, b, l, f, s, sp)                     \
           ((t)->dt_mt->dm_dmamap_load_phys((t), (m), (b), (l),            \
               (f), (s), (sp)))
   #define _bus_dmamap_load_buffer(t, m, b, l, p, f, s, sp)                \
           ((t)->dt_mt->dm_dmamap_load_buffer((t), (m), (b), (l), (p),     \
               (f), (s), (sp)))
   #define _bus_dmamap_waitok(t, m, mem, c, ca)                            \
           ((t)->dt_mt->dm_dmamap_waitok((t), (m), (mem), (c), (ca)))
   #define _bus_dmamap_complete(t, m, s, n, e)                             \
           ((t)->dt_mt->dm_dmamap_complete((t), (m), (s), (n), (e)))
   #define bus_dmamap_unload(t, p)                                         \
           ((t)->dt_mt->dm_dmamap_unload((t), (p)))
   #define bus_dmamap_sync(t, m, op)                                       \
           ((t)->dt_mt->dm_dmamap_sync((t), (m), (op)))
   #define bus_dmamem_alloc(t, v, f, m)                                    \
           ((t)->dt_mt->dm_dmamem_alloc((t), (v), (f), (m)))
   #define bus_dmamem_free(t, v, m)                                        \
           ((t)->dt_mt->dm_dmamem_free((t), (v), (m)))
   #define _bus_dmamap_load_ma(t, m, a, tt, o, f, s, p)                    \
           bus_dmamap_load_ma_triv((t), (m), (a), (tt), (o), (f), (s), (p))
   
   #endif /* !_SPARC64_BUS_DMA_H_ */

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