kernel -- virtio: Implement virtio-layer lwkt_serializer for devices

[dragonfly.git] / sys / dev / virtual / virtio / virtio / virtio_bus_if.m

#-
# Copyright (c) 2011, Bryan Venteicher <bryanv@daemoninthecloset.org>
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# modification, are permitted provided that the following conditions
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# 1. Redistributions of source code must retain the above copyright
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# 2. Redistributions in binary form must reproduce the above copyright
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# $FreeBSD: src/sys/dev/virtio/virtio_bus_if.m,v 1.1 2011/11/18 05:43:43 grehan Exp $

#include <sys/bus.h>

INTERFACE virtio_bus;

HEADER {
struct vq_alloc_info;
};

METHOD uint64_t negotiate_features {
	device_t	dev;
	uint64_t	child_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;
};
HEADER {
#define VIRTIO_ALLOC_VQS_DISABLE_MSIX 0x1
};

METHOD int setup_intr {
	device_t		dev;
	lwkt_serialize_t	slz;
};

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;
};

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;
	void			*src;
	int			len;
};