1/*- 2 * Copyright (c) 2011-2012 Stefan Bethke. 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 * $FreeBSD: releng/10.2/sys/dev/etherswitch/mdio.c 234861 2012-05-01 06:11:38Z adrian $ 27 */ 28 29#include <sys/param.h> 30#include <sys/bus.h> 31#include <sys/systm.h> 32 33#include <dev/etherswitch/mdio.h> 34 35#include "mdio_if.h" 36 37static void 38mdio_identify(driver_t *driver, device_t parent) 39{ 40 41 if (device_find_child(parent, mdio_driver.name, -1) == NULL) 42 BUS_ADD_CHILD(parent, 0, mdio_driver.name, -1); 43} 44 45static int 46mdio_probe(device_t dev) 47{ 48 49 device_set_desc(dev, "MDIO"); 50 51 return (BUS_PROBE_SPECIFIC); 52} 53 54static int 55mdio_attach(device_t dev) 56{ 57 58 bus_generic_probe(dev); 59 bus_enumerate_hinted_children(dev); 60 return (bus_generic_attach(dev)); 61} 62 63static int 64mdio_detach(device_t dev) 65{ 66 67 bus_generic_detach(dev); 68 return (0); 69} 70 71static int 72mdio_readreg(device_t dev, int phy, int reg) 73{ 74 75 return (MDIO_READREG(device_get_parent(dev), phy, reg)); 76} 77 78static int 79mdio_writereg(device_t dev, int phy, int reg, int val) 80{ 81 82 return (MDIO_WRITEREG(device_get_parent(dev), phy, reg, val)); 83} 84 85static void 86mdio_hinted_child(device_t dev, const char *name, int unit) 87{ 88 89 device_add_child(dev, name, unit); 90} 91 92static device_method_t mdio_methods[] = { 93 /* device interface */ 94 DEVMETHOD(device_identify, mdio_identify), 95 DEVMETHOD(device_probe, mdio_probe), 96 DEVMETHOD(device_attach, mdio_attach), 97 DEVMETHOD(device_detach, mdio_detach), 98 DEVMETHOD(device_shutdown, bus_generic_shutdown), 99 100 /* bus interface */ 101 DEVMETHOD(bus_add_child, device_add_child_ordered), 102 DEVMETHOD(bus_hinted_child, mdio_hinted_child), 103 104 /* MDIO access */ 105 DEVMETHOD(mdio_readreg, mdio_readreg), 106 DEVMETHOD(mdio_writereg, mdio_writereg), 107 108 DEVMETHOD_END 109}; 110 111driver_t mdio_driver = { 112 "mdio", 113 mdio_methods, 114 0 115}; 116 117devclass_t mdio_devclass; 118