97 lines
4.0 KiB
C
97 lines
4.0 KiB
C
/*-
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* Copyright (c) 2013 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Konstantin Belousov <kib@FreeBSD.org>
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_BUS_DMA_IMPL_H_
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#define _MACHINE_BUS_DMA_IMPL_H_
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struct bus_dma_tag_common {
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struct bus_dma_impl *impl;
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struct bus_dma_tag_common *parent;
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bus_size_t alignment;
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bus_addr_t boundary;
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bus_addr_t lowaddr;
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bus_addr_t highaddr;
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bus_dma_filter_t *filter;
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void *filterarg;
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bus_size_t maxsize;
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u_int nsegments;
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bus_size_t maxsegsz;
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int flags;
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bus_dma_lock_t *lockfunc;
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void *lockfuncarg;
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int ref_count;
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};
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struct bus_dma_impl {
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int (*tag_create)(bus_dma_tag_t parent,
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bus_size_t alignment, bus_addr_t boundary, bus_addr_t lowaddr,
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bus_addr_t highaddr, bus_dma_filter_t *filter,
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void *filterarg, bus_size_t maxsize, int nsegments,
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bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc,
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void *lockfuncarg, bus_dma_tag_t *dmat);
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int (*tag_destroy)(bus_dma_tag_t dmat);
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int (*map_create)(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp);
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int (*map_destroy)(bus_dma_tag_t dmat, bus_dmamap_t map);
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int (*mem_alloc)(bus_dma_tag_t dmat, void** vaddr, int flags,
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bus_dmamap_t *mapp);
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void (*mem_free)(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map);
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int (*load_ma)(bus_dma_tag_t dmat, bus_dmamap_t map,
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struct vm_page **ma, bus_size_t tlen, int ma_offs, int flags,
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bus_dma_segment_t *segs, int *segp);
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int (*load_phys)(bus_dma_tag_t dmat, bus_dmamap_t map,
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vm_paddr_t buf, bus_size_t buflen, int flags,
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bus_dma_segment_t *segs, int *segp);
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int (*load_buffer)(bus_dma_tag_t dmat, bus_dmamap_t map,
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void *buf, bus_size_t buflen, pmap_t pmap, int flags,
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bus_dma_segment_t *segs, int *segp);
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void (*map_waitok)(bus_dma_tag_t dmat, bus_dmamap_t map,
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struct memdesc *mem, bus_dmamap_callback_t *callback,
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void *callback_arg);
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bus_dma_segment_t *(*map_complete)(bus_dma_tag_t dmat, bus_dmamap_t map,
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bus_dma_segment_t *segs, int nsegs, int error);
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void (*map_unload)(bus_dma_tag_t dmat, bus_dmamap_t map);
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void (*map_sync)(bus_dma_tag_t dmat, bus_dmamap_t map,
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bus_dmasync_op_t op);
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};
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void bus_dma_dflt_lock(void *arg, bus_dma_lock_op_t op);
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int bus_dma_run_filter(struct bus_dma_tag_common *dmat, bus_addr_t paddr);
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int common_bus_dma_tag_create(struct bus_dma_tag_common *parent,
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bus_size_t alignment,
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bus_addr_t boundary, bus_addr_t lowaddr, bus_addr_t highaddr,
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bus_dma_filter_t *filter, void *filterarg, bus_size_t maxsize,
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int nsegments, bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc,
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void *lockfuncarg, size_t sz, void **dmat);
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extern struct bus_dma_impl bus_dma_bounce_impl;
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#endif
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