1#-
2# Copyright (c) 2011, Bryan Venteicher <bryanv@daemoninthecloset.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: src/sys/dev/virtio/virtio_bus_if.m,v 1.1 2011/11/18 05:43:43 grehan Exp $
27
28#include <sys/bus.h>
29
30INTERFACE virtio_bus;
31
32HEADER {
33struct vq_alloc_info;
34};
35
36METHOD uint64_t negotiate_features {
37	device_t	dev;
38	uint64_t	child_features;
39};
40
41METHOD int with_feature {
42	device_t	dev;
43	uint64_t	feature;
44};
45
46METHOD int alloc_virtqueues {
47	device_t	dev;
48	int		flags;
49	int		nvqs;
50	struct vq_alloc_info *info;
51};
52HEADER {
53#define VIRTIO_ALLOC_VQS_DISABLE_MSIX 0x1
54};
55
56METHOD int setup_intr {
57	device_t		dev;
58	lwkt_serialize_t	slz;
59};
60
61METHOD void stop {
62	device_t		dev;
63};
64
65METHOD int reinit {
66	device_t		dev;
67	uint64_t		features;
68};
69
70METHOD void reinit_complete {
71	device_t		dev;
72};
73
74METHOD void notify_vq {
75	device_t		dev;
76	uint16_t		queue;
77};
78
79METHOD void read_device_config {
80	device_t		dev;
81	bus_size_t		offset;
82	void			*dst;
83	int			len;
84};
85
86METHOD void write_device_config {
87	device_t		dev;
88	bus_size_t		offset;
89	void			*src;
90	int			len;
91};
92