master
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2013 The FreeBSD Foundation
5 *
6 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
7 * under sponsorship from the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#ifndef __X86_BUSDMA_IMPL_H
32#define __X86_BUSDMA_IMPL_H
33
34struct 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
53struct 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#ifdef KMSAN
86 void (*load_kmsan)(bus_dmamap_t map, struct memdesc *mem);
87#endif
88};
89
90int bus_dma_run_filter(struct bus_dma_tag_common *dmat, vm_paddr_t paddr);
91int common_bus_dma_tag_create(struct bus_dma_tag_common *parent,
92 bus_size_t alignment,
93 bus_addr_t boundary, bus_addr_t lowaddr, bus_addr_t highaddr,
94 bus_dma_filter_t *filter, void *filterarg, bus_size_t maxsize,
95 int nsegments, bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc,
96 void *lockfuncarg, size_t sz, void **dmat);
97
98extern struct bus_dma_impl bus_dma_bounce_impl;
99
100#endif