kernel -- virtio: Implement virtio-layer lwkt_serializer for devices
[dragonfly.git] / sys / dev / virtual / virtio / virtio / virtio_bus_if.m
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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 {
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57 device_t dev;
58 lwkt_serialize_t slz;
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59};
60
61METHOD void stop {
2f1382ca 62 device_t dev;
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63};
64
65METHOD int reinit {
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66 device_t dev;
67 uint64_t features;
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68};
69
70METHOD void reinit_complete {
2f1382ca 71 device_t dev;
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72};
73
74METHOD void notify_vq {
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75 device_t dev;
76 uint16_t queue;
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77};
78
79METHOD void read_device_config {
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80 device_t dev;
81 bus_size_t offset;
82 void *dst;
83 int len;
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84};
85
86METHOD void write_device_config {
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87 device_t dev;
88 bus_size_t offset;
89 void *src;
90 int len;
11447b59 91};