#-
# Copyright (c) 2019 Michal Meloun <mmel@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 <machine/bus.h>

INTERFACE pci_dw;


/**
 * Read from dbi space.
 * The reg argument is a byte offset into dbi space.
 * The width argument (which should be 1, 2 or 4) specifies how
 * many bytes  to read from that offset.
 */
METHOD  uint32_t dbi_read{
	device_t	dev;
	u_int		reg;
	int		width;
};

/**
 * Write to dbi space.
 * The reg argument is a byte offset into dbi space.
 * The width argument (which should be 1, 2 or 4) specifies how
 * many bytes  to write to that offset.
 */
METHOD void dbi_write{
	device_t	dev;
	u_int		reg;
	uint32_t	value;
	int		width;
};

/**
 * Start or stop link
 */
METHOD int set_link{
	device_t	dev;
	bool		start;
};

/**
 * Query link status (up/down)
 */
METHOD int get_link{
	device_t	dev;
	bool		*status;
};