device_if.m

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#-
# Copyright (c) 1998-2004 Doug Rabson
# 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.
#
# $BSDSUniX$
#

#include <sys/bus.h>

INTERFACE device;

#
# Default implementations of some methods.
#
CODE {
        static int null_shutdown(device_t dev)
        {
            return 0;
        }

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

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

        static int null_quiesce(device_t dev)
        {
            return EOPNOTSUPP;
        }
};
        
METHOD int probe {
        device_t dev;
};

STATICMETHOD void identify {
        driver_t *driver;
        device_t parent;
};

METHOD int attach {
        device_t dev;
};

METHOD int detach {
        device_t dev;
};

METHOD int shutdown {
        device_t dev;
} DEFAULT null_shutdown;

METHOD int suspend {
        device_t dev;
} DEFAULT null_suspend;

METHOD int resume {
        device_t dev;
} DEFAULT null_resume;

METHOD int quiesce {
        device_t dev;
} DEFAULT null_quiesce;