1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/*-
* Copyright (c) 2015 Marcel Moolenaar
* All rights reserved.
*
* 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 ``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 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.
*
* $FreeBSD$
*/
#ifndef _DEV_PROTO_BUSDMA_H_
#define _DEV_PROTO_BUSDMA_H_
struct proto_md;
struct proto_tag {
LIST_ENTRY(proto_tag) tags;
struct proto_tag *parent;
LIST_ENTRY(proto_tag) peers;
LIST_HEAD(,proto_tag) children;
LIST_HEAD(,proto_md) mds;
bus_addr_t align;
bus_addr_t bndry;
bus_addr_t maxaddr;
bus_size_t maxsz;
bus_size_t maxsegsz;
u_int nsegs;
u_int datarate;
};
struct proto_md {
LIST_ENTRY(proto_md) mds;
LIST_ENTRY(proto_md) peers;
struct proto_tag *tag;
void *virtaddr;
vm_paddr_t physaddr;
bus_dma_tag_t bd_tag;
bus_dmamap_t bd_map;
};
struct proto_busdma {
LIST_HEAD(,proto_tag) tags;
LIST_HEAD(,proto_md) mds;
bus_dma_tag_t bd_roottag;
};
struct proto_busdma *proto_busdma_attach(struct proto_softc *);
int proto_busdma_detach(struct proto_softc *, struct proto_busdma *);
int proto_busdma_cleanup(struct proto_softc *, struct proto_busdma *);
int proto_busdma_ioctl(struct proto_softc *, struct proto_busdma *,
struct proto_ioc_busdma *);
int proto_busdma_mmap_allowed(struct proto_busdma *, vm_paddr_t);
#endif /* _DEV_PROTO_BUSDMA_H_ */
|
