1/*- 2 * Copyright (c) 2010 Marius Strobl <marius@FreeBSD.org> 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 30/* 31 * Glue allowing devices beneath the scalable shared memory node to be 32 * treated like nexus(4) children 33 */ 34 35#include <sys/param.h> 36#include <sys/systm.h> 37#include <sys/bus.h> 38#include <sys/kernel.h> 39#include <sys/module.h> 40 41#include <dev/ofw/ofw_bus.h> 42 43#include <machine/nexusvar.h> 44 45static device_probe_t ssm_probe; 46 47static device_method_t ssm_methods[] = { 48 /* Device interface */ 49 DEVMETHOD(device_probe, ssm_probe), 50 51 /* Bus interface */ 52 53 /* ofw_bus interface */ 54 55 DEVMETHOD_END 56}; 57 58static devclass_t ssm_devclass; 59 60DEFINE_CLASS_1(ssm, ssm_driver, ssm_methods, 1 /* no softc */, nexus_driver); 61EARLY_DRIVER_MODULE(ssm, nexus, ssm_driver, ssm_devclass, 0, 0, BUS_PASS_BUS); 62MODULE_DEPEND(ssm, nexus, 1, 1, 1); 63MODULE_VERSION(ssm, 1); 64 65static int 66ssm_probe(device_t dev) 67{ 68 69 if (strcmp(ofw_bus_get_name(dev), "ssm") == 0) { 70 device_set_desc(dev, "Scalable Shared Memory"); 71 return (BUS_PROBE_DEFAULT); 72 } 73 return (ENXIO); 74} 75