1/*- 2 * Copyright (c) 2016 Stanislav Galabov. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29#include <sys/param.h> 30#include <sys/systm.h> 31#include <sys/module.h> 32#include <sys/bus.h> 33#include <sys/conf.h> 34#include <sys/kernel.h> 35#include <sys/rman.h> 36 37#include <dev/ofw/openfirm.h> 38#include <dev/ofw/ofw_bus.h> 39#include <dev/ofw/ofw_bus_subr.h> 40 41#include <dev/fdt/simplebus.h> 42 43/* 44 * Driver for Mediatek/Ralink Palmbus 45 * 46 * Currently the only reason for the existence of this driver is so that we can 47 * minimize the changes required to the upstream DTS files we use. 48 * Otherwise palmbus is a very simple subclass of our simplebus and the only 49 * difference between the two is the actual value of the compatible property. 50 */ 51 52static int 53palmbus_probe(device_t dev) 54{ 55 56 if (!ofw_bus_status_okay(dev)) 57 return (ENXIO); 58 59 if (!(ofw_bus_is_compatible(dev, "palmbus") && 60 ofw_bus_has_prop(dev, "ranges")) && 61 (ofw_bus_get_type(dev) == NULL || strcmp(ofw_bus_get_type(dev), 62 "soc") != 0)) 63 return (ENXIO); 64 65 device_set_desc(dev, "MTK Palmbus"); 66 67 return (0); 68} 69 70static device_method_t palmbus_methods[] = { 71 DEVMETHOD(device_probe, palmbus_probe), 72 73 DEVMETHOD_END 74}; 75 76DEFINE_CLASS_1(palmbus, palmbus_driver, palmbus_methods, 77 sizeof(struct simplebus_softc), simplebus_driver); 78static devclass_t palmbus_devclass; 79EARLY_DRIVER_MODULE(palmbus, ofwbus, palmbus_driver, palmbus_devclass, 0, 0, 80 BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); 81MODULE_VERSION(palmbus, 1); 82