freebsd-src/sys/isa/isa_if.m
Doug Rabson f7b7769172 * Factor out the object system from new-bus so that it can be used by
non-device code.
* Re-implement the method dispatch to improve efficiency. The new system
  takes about 40ns for a method dispatch on a 300Mhz PII which is only
  10ns slower than a direct function call on the same hardware.

This changes the new-bus ABI slightly so make sure you re-compile any
driver modules which you use.
2000-04-08 14:17:18 +00:00

73 lines
2.4 KiB
Objective-C

#
# Copyright (c) 1999 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.
#
# $FreeBSD$
#
#include <sys/bus.h>
#include <isa/isavar.h>
INTERFACE isa;
#
# Add a Plug-and-play configuration to the device. Configurations with
# a lower priority are preferred.
#
METHOD int add_config {
device_t dev;
device_t child;
int priority;
struct isa_config *config;
};
#
# Register a function which can be called to configure a device with
# a given set of resources. The function will be called with a struct
# isa_config representing the desired configuration and a flag to
# state whether the device should be enabled.
#
METHOD void set_config_callback {
device_t dev;
device_t child;
isa_config_cb *fn;
void *arg;
};
#
# A helper method for implementing probe methods for PnP compatible
# drivers. The driver calls this method with a list of PnP ids and
# descriptions and it returns zero if one of the ids matches or ENXIO
# otherwise.
#
# If the device is not plug-and-play compatible, this method returns
# ENOENT, allowing the caller to fall back to heuristic probing
# techniques.
#
METHOD int pnp_probe {
device_t dev;
device_t child;
struct isa_pnp_id *ids;
};