2 * Copyright (c) 2013 The FreeBSD Foundation
5 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
6 * under sponsorship from the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #ifndef __X86_BUSDMA_IMPL_H
33 #define __X86_BUSDMA_IMPL_H
35 struct bus_dma_tag_common {
36 struct bus_dma_impl *impl;
37 struct bus_dma_tag_common *parent;
42 bus_dma_filter_t *filter;
48 bus_dma_lock_t *lockfunc;
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 (*map_create)(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp);
62 int (*map_destroy)(bus_dma_tag_t dmat, bus_dmamap_t map);
63 int (*mem_alloc)(bus_dma_tag_t dmat, void** vaddr, int flags,
65 void (*mem_free)(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map);
66 int (*load_ma)(bus_dma_tag_t dmat, bus_dmamap_t map,
67 struct vm_page **ma, bus_size_t tlen, int ma_offs, int flags,
68 bus_dma_segment_t *segs, int *segp);
69 int (*load_phys)(bus_dma_tag_t dmat, bus_dmamap_t map,
70 vm_paddr_t buf, bus_size_t buflen, int flags,
71 bus_dma_segment_t *segs, int *segp);
72 int (*load_buffer)(bus_dma_tag_t dmat, bus_dmamap_t map,
73 void *buf, bus_size_t buflen, pmap_t pmap, int flags,
74 bus_dma_segment_t *segs, int *segp);
75 void (*map_waitok)(bus_dma_tag_t dmat, bus_dmamap_t map,
76 struct memdesc *mem, bus_dmamap_callback_t *callback,
78 bus_dma_segment_t *(*map_complete)(bus_dma_tag_t dmat, bus_dmamap_t map,
79 bus_dma_segment_t *segs, int nsegs, int error);
80 void (*map_unload)(bus_dma_tag_t dmat, bus_dmamap_t map);
81 void (*map_sync)(bus_dma_tag_t dmat, bus_dmamap_t map,
85 void bus_dma_dflt_lock(void *arg, bus_dma_lock_op_t op);
86 int bus_dma_run_filter(struct bus_dma_tag_common *dmat, bus_addr_t paddr);
87 int common_bus_dma_tag_create(struct bus_dma_tag_common *parent,
89 bus_addr_t boundary, bus_addr_t lowaddr, bus_addr_t highaddr,
90 bus_dma_filter_t *filter, void *filterarg, bus_size_t maxsize,
91 int nsegments, bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc,
92 void *lockfuncarg, size_t sz, void **dmat);
94 extern struct bus_dma_impl bus_dma_bounce_impl;