path: root/sys/dev/virtio/virtio_bus_if.m

#-
# Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
# 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
#
# $FreeBSD$

#include <sys/bus.h>
#include <machine/bus.h>

INTERFACE virtio_bus;

HEADER {
struct vq_alloc_info;
};

CODE {
	static int
	virtio_bus_default_finalize_features(device_t dev)
	{
		return (0);
	}

	static int
	virtio_bus_default_config_generation(device_t dev)
	{
		return (0);
	}
};

METHOD uint64_t negotiate_features {
	device_t	dev;
	uint64_t	child_features;
};

METHOD int finalize_features {
	device_t	dev;
} DEFAULT virtio_bus_default_finalize_features;

METHOD int with_feature {
	device_t	dev;
	uint64_t	feature;
};

METHOD int alloc_virtqueues {
	device_t	dev;
	int		flags;
	int		nvqs;
	struct vq_alloc_info *info;
};

METHOD int setup_intr {
	device_t	dev;
	enum intr_type	type;
};

METHOD void stop {
	device_t	dev;
};

METHOD int reinit {
	device_t	dev;
	uint64_t	features;
};

METHOD void reinit_complete {
	device_t	dev;
};

METHOD void notify_vq {
	device_t	dev;
	uint16_t	queue;
	bus_size_t	offset;
};

METHOD int config_generation {
	device_t	dev;
} DEFAULT virtio_bus_default_config_generation;

METHOD void read_device_config {
	device_t	dev;
	bus_size_t	offset;
	void		*dst;
	int		len;
};

METHOD void write_device_config {
	device_t	dev;
	bus_size_t	offset;
	const void	*src;
	int		len;
};

METHOD void poll {
	device_t	dev;
};