1 /*- 2 * Copyright (c) 2015 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Semihalf under 6 * the sponsorship of the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/bus.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 39 #include <dev/ofw/ofw_bus.h> 40 #include <dev/ofw/ofw_bus_subr.h> 41 42 #include "thunder_mdio_var.h" 43 44 static int thunder_mdio_fdt_probe(device_t); 45 static int thunder_mdio_fdt_attach(device_t); 46 47 static device_method_t thunder_mdio_fdt_methods[] = { 48 /* Device interface */ 49 DEVMETHOD(device_probe, thunder_mdio_fdt_probe), 50 DEVMETHOD(device_attach, thunder_mdio_fdt_attach), 51 52 /* End */ 53 DEVMETHOD_END 54 }; 55 56 DEFINE_CLASS_1(thunder_mdio, thunder_mdio_fdt_driver, thunder_mdio_fdt_methods, 57 sizeof(struct thunder_mdio_softc), thunder_mdio_driver); 58 59 static devclass_t thunder_mdio_fdt_devclass; 60 61 EARLY_DRIVER_MODULE(thunder_mdio, ofwbus, thunder_mdio_fdt_driver, 62 thunder_mdio_fdt_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); 63 64 static int 65 thunder_mdio_fdt_probe(device_t dev) 66 { 67 68 if (ofw_bus_is_compatible(dev, "cavium,octeon-3860-mdio")) { 69 device_set_desc(dev, THUNDER_MDIO_DEVSTR); 70 return (BUS_PROBE_DEFAULT); 71 } 72 73 return (ENXIO); 74 } 75 76 static int 77 thunder_mdio_fdt_attach(device_t dev) 78 { 79 phandle_t node; 80 int ret; 81 82 /* Call core attach */ 83 ret = thunder_mdio_attach(dev); 84 if (ret != 0) 85 return (ret); 86 /* 87 * Register device to this node/xref. 88 * Thanks to that we will be able to retrieve device_t structure 89 * while holding only node reference acquired from FDT. 90 */ 91 node = ofw_bus_get_node(dev); 92 OF_device_register_xref(OF_xref_from_node(node), dev); 93 94 return (0); 95 } 96