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