xref: /freebsd/sys/dev/virtio/virtio_bus_if.m (revision 3a92d97ff0f22d21608e1c19b83104c4937523b6) 
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
31INTERFACE virtio_bus;
32
33HEADER {
34struct vq_alloc_info;
35};
36
37METHOD uint64_t negotiate_features {
38	device_t	dev;
39	uint64_t	child_features;
40};
41
42METHOD int with_feature {
43	device_t	dev;
44	uint64_t	feature;
45};
46
47METHOD int alloc_virtqueues {
48	device_t	dev;
49	int		flags;
50	int		nvqs;
51	struct vq_alloc_info *info;
52};
53
54METHOD int setup_intr {
55	device_t	dev;
56	enum intr_type	type;
57};
58
59METHOD void stop {
60	device_t	dev;
61};
62
63METHOD int reinit {
64	device_t	dev;
65	uint64_t	features;
66};
67
68METHOD void reinit_complete {
69	device_t	dev;
70};
71
72METHOD void notify_vq {
73	device_t	dev;
74	uint16_t	queue;
75};
76
77METHOD void read_device_config {
78	device_t	dev;
79	bus_size_t	offset;
80	void		*dst;
81	int		len;
82};
83
84METHOD void write_device_config {
85	device_t	dev;
86	bus_size_t	offset;
87	void		*src;
88	int		len;
89};
90