bus_dma_impl.h

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    1 /*-
    2  * Copyright (c) 2013 The FreeBSD Foundation
    3  *
    4  * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
    5  * under sponsorship from the FreeBSD Foundation.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 
   31 #ifndef _MACHINE_BUS_DMA_IMPL_H_
   32 #define _MACHINE_BUS_DMA_IMPL_H_
   33 
   34 struct bus_dma_tag_common {
   35         struct bus_dma_impl *impl;
   36         struct bus_dma_tag_common *parent;
   37         bus_size_t        alignment;
   38         bus_addr_t        boundary;
   39         bus_addr_t        lowaddr;
   40         bus_addr_t        highaddr;
   41         bus_dma_filter_t *filter;
   42         void             *filterarg;
   43         bus_size_t        maxsize;
   44         u_int             nsegments;
   45         bus_size_t        maxsegsz;
   46         int               flags;
   47         bus_dma_lock_t   *lockfunc;
   48         void             *lockfuncarg;
   49         int               ref_count;
   50         int               domain;
   51 };
   52 
   53 struct bus_dma_impl {
   54         int (*tag_create)(bus_dma_tag_t parent,
   55             bus_size_t alignment, bus_addr_t boundary, bus_addr_t lowaddr,
   56             bus_addr_t highaddr, bus_dma_filter_t *filter,
   57             void *filterarg, bus_size_t maxsize, int nsegments,
   58             bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc,
   59             void *lockfuncarg, bus_dma_tag_t *dmat);
   60         int (*tag_destroy)(bus_dma_tag_t dmat);
   61         int (*tag_set_domain)(bus_dma_tag_t);
   62         bool (*id_mapped)(bus_dma_tag_t, vm_paddr_t, bus_size_t);
   63         int (*map_create)(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp);
   64         int (*map_destroy)(bus_dma_tag_t dmat, bus_dmamap_t map);
   65         int (*mem_alloc)(bus_dma_tag_t dmat, void** vaddr, int flags,
   66             bus_dmamap_t *mapp);
   67         void (*mem_free)(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map);
   68         int (*load_ma)(bus_dma_tag_t dmat, bus_dmamap_t map,
   69             struct vm_page **ma, bus_size_t tlen, int ma_offs, int flags,
   70             bus_dma_segment_t *segs, int *segp);
   71         int (*load_phys)(bus_dma_tag_t dmat, bus_dmamap_t map,
   72             vm_paddr_t buf, bus_size_t buflen, int flags,
   73             bus_dma_segment_t *segs, int *segp);
   74         int (*load_buffer)(bus_dma_tag_t dmat, bus_dmamap_t map,
   75             void *buf, bus_size_t buflen, struct pmap *pmap, int flags,
   76             bus_dma_segment_t *segs, int *segp);
   77         void (*map_waitok)(bus_dma_tag_t dmat, bus_dmamap_t map,
   78             struct memdesc *mem, bus_dmamap_callback_t *callback,
   79             void *callback_arg);
   80         bus_dma_segment_t *(*map_complete)(bus_dma_tag_t dmat, bus_dmamap_t map,
   81             bus_dma_segment_t *segs, int nsegs, int error);
   82         void (*map_unload)(bus_dma_tag_t dmat, bus_dmamap_t map);
   83         void (*map_sync)(bus_dma_tag_t dmat, bus_dmamap_t map,
   84             bus_dmasync_op_t op);
   85 };
   86 
   87 int bus_dma_run_filter(struct bus_dma_tag_common *dmat, bus_addr_t paddr);
   88 int common_bus_dma_tag_create(struct bus_dma_tag_common *parent,
   89     bus_size_t alignment,
   90     bus_addr_t boundary, bus_addr_t lowaddr, bus_addr_t highaddr,
   91     bus_dma_filter_t *filter, void *filterarg, bus_size_t maxsize,
   92     int nsegments, bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc,
   93     void *lockfuncarg, size_t sz, void **dmat);
   94 
   95 extern struct bus_dma_impl bus_dma_bounce_impl;
   96 
   97 #endif

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FreeBSD/Linux Kernel Cross Reference sys/arm64/include/bus_dma_impl.h

FreeBSD/Linux Kernel Cross Reference
sys/arm64/include/bus_dma_impl.h