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- /*-
- * Copyright (c) 2013 The FreeBSD Foundation
- *
- * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
- * under sponsorship from the FreeBSD Foundation.
- *
- * 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 AUTHOR 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 AUTHOR 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.
- */
- #ifndef _MACHINE_BUS_DMA_IMPL_H_
- #define _MACHINE_BUS_DMA_IMPL_H_
- struct bus_dma_tag_common {
- struct bus_dma_impl *impl;
- bus_size_t alignment;
- bus_addr_t boundary;
- bus_addr_t lowaddr;
- bus_addr_t highaddr;
- bus_size_t maxsize;
- u_int nsegments;
- bus_size_t maxsegsz;
- int flags;
- bus_dma_lock_t *lockfunc;
- void *lockfuncarg;
- };
- struct bus_dma_impl {
- int (*tag_create)(bus_dma_tag_t parent,
- bus_size_t alignment, bus_addr_t boundary, bus_addr_t lowaddr,
- bus_addr_t highaddr, bus_size_t maxsize, int nsegments,
- bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc,
- void *lockfuncarg, bus_dma_tag_t *dmat);
- int (*tag_destroy)(bus_dma_tag_t dmat);
- int (*map_create)(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp);
- int (*map_destroy)(bus_dma_tag_t dmat, bus_dmamap_t map);
- int (*mem_alloc)(bus_dma_tag_t dmat, void** vaddr, int flags,
- bus_dmamap_t *mapp);
- void (*mem_free)(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map);
- int (*load_ma)(bus_dma_tag_t dmat, bus_dmamap_t map,
- struct vm_page **ma, bus_size_t tlen, int ma_offs, int flags,
- bus_dma_segment_t *segs, int *segp);
- int (*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 (*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 (*map_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 *(*map_complete)(bus_dma_tag_t dmat, bus_dmamap_t map,
- bus_dma_segment_t *segs, int nsegs, int error);
- void (*map_unload)(bus_dma_tag_t dmat, bus_dmamap_t map);
- void (*map_sync)(bus_dma_tag_t dmat, bus_dmamap_t map,
- bus_dmasync_op_t op);
- };
- int common_bus_dma_tag_create(struct bus_dma_tag_common *parent,
- bus_size_t alignment,
- bus_addr_t boundary, bus_addr_t lowaddr, bus_addr_t highaddr,
- bus_size_t maxsize, int nsegments, bus_size_t maxsegsz, int flags,
- bus_dma_lock_t *lockfunc, void *lockfuncarg, size_t sz, void **dmat);
- extern struct bus_dma_impl bus_dma_bounce_impl;
- #endif
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