1 #-
2 # Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
3 # All rights reserved.
4 #
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions
7 # are met:
8 # 1. Redistributions of source code must retain the above copyright
9 # notice, this list of conditions and the following disclaimer.
10 # 2. Redistributions in binary form must reproduce the above copyright
11 # notice, this list of conditions and the following disclaimer in the
12 # documentation and/or other materials provided with the distribution.
13 #
14 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 # SUCH DAMAGE.
25 #
26 # $FreeBSD$
27
28 #include <sys/bus.h>
29 #include <machine/bus.h>
30
31 INTERFACE virtio_bus;
32
33 HEADER {
34 struct vq_alloc_info;
35 };
36
37 CODE {
38 static int
39 virtio_bus_default_finalize_features(device_t dev)
40 {
41 return (0);
42 }
43
44 static int
45 virtio_bus_default_config_generation(device_t dev)
46 {
47 return (0);
48 }
49 };
50
51 METHOD uint64_t negotiate_features {
52 device_t dev;
53 uint64_t child_features;
54 };
55
56 METHOD int finalize_features {
57 device_t dev;
58 } DEFAULT virtio_bus_default_finalize_features;
59
60 METHOD int with_feature {
61 device_t dev;
62 uint64_t feature;
63 };
64
65 METHOD int alloc_virtqueues {
66 device_t dev;
67 int flags;
68 int nvqs;
69 struct vq_alloc_info *info;
70 };
71
72 METHOD int setup_intr {
73 device_t dev;
74 enum intr_type type;
75 };
76
77 METHOD void stop {
78 device_t dev;
79 };
80
81 METHOD int reinit {
82 device_t dev;
83 uint64_t features;
84 };
85
86 METHOD void reinit_complete {
87 device_t dev;
88 };
89
90 METHOD void notify_vq {
91 device_t dev;
92 uint16_t queue;
93 bus_size_t offset;
94 };
95
96 METHOD int config_generation {
97 device_t dev;
98 } DEFAULT virtio_bus_default_config_generation;
99
100 METHOD void read_device_config {
101 device_t dev;
102 bus_size_t offset;
103 void *dst;
104 int len;
105 };
106
107 METHOD void write_device_config {
108 device_t dev;
109 bus_size_t offset;
110 const void *src;
111 int len;
112 };
113
114 METHOD void poll {
115 device_t dev;
116 };
117
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