94 lines
2.8 KiB
Objective-C
94 lines
2.8 KiB
Objective-C
#
|
|
# Copyright (c) 1998 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.
|
|
#
|
|
# $Id: bus_if.m,v 1.3 1998/09/16 08:25:56 dfr Exp $
|
|
#
|
|
|
|
INTERFACE bus;
|
|
|
|
#
|
|
# This is called from system code which prints out a description of a
|
|
# device. It should describe the attachment that the child has with
|
|
# the parent. For instance the TurboLaser bus prints which node the
|
|
# device is attached to.
|
|
#
|
|
METHOD void print_child {
|
|
device_t dev;
|
|
device_t child;
|
|
};
|
|
|
|
#
|
|
# These two methods manage a bus specific set of instance variables of
|
|
# a child device. The intention is that each different type of bus
|
|
# defines a set of appropriate instance variables (such as ports and
|
|
# irqs for ISA bus etc.)
|
|
#
|
|
# This information could be given to the child device as a struct but
|
|
# that makes it hard for a bus to add or remove variables without
|
|
# forcing an edit and recompile for all drivers which may not be
|
|
# possible for vendor supplied binary drivers.
|
|
|
|
#
|
|
# Read an instance variable. Return 0 on success.
|
|
#
|
|
METHOD int read_ivar {
|
|
device_t dev;
|
|
device_t child;
|
|
int index;
|
|
u_long *result;
|
|
};
|
|
|
|
#
|
|
# Write an instance variable. Return 0 on success.
|
|
#
|
|
METHOD int write_ivar {
|
|
device_t dev;
|
|
device_t child;
|
|
int index;
|
|
u_long value;
|
|
};
|
|
|
|
#
|
|
# Create an interrupt handler for the child device. The handler will
|
|
# be called with the value 'arg' as its only argument. This method
|
|
# does not activate the handler.
|
|
#
|
|
METHOD void* create_intr {
|
|
device_t dev;
|
|
device_t child;
|
|
int irq;
|
|
driver_intr_t *intr;
|
|
void *arg;
|
|
};
|
|
|
|
#
|
|
# Activate an interrupt handler previously created with
|
|
# BUS_CREATE_INTR.
|
|
#
|
|
METHOD int connect_intr {
|
|
device_t dev;
|
|
void *ih;
|
|
};
|