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 27 #include <sys/param.h> 28 #include <sys/bus.h> 29 #include <sys/systm.h> 30 #include <sys/module.h> 31 32 #include <dev/mdio/mdio.h> 33 34 #include "mdio_if.h" 35 36 static void 37 mdio_identify(driver_t *driver, device_t parent) 38 { 39 40 if (device_find_child(parent, mdio_driver.name, -1) == NULL) 41 BUS_ADD_CHILD(parent, 0, mdio_driver.name, -1); 42 } 43 44 static int 45 mdio_probe(device_t dev) 46 { 47 48 device_set_desc(dev, "MDIO"); 49 50 return (BUS_PROBE_SPECIFIC); 51 } 52 53 static int 54 mdio_attach(device_t dev) 55 { 56 57 bus_generic_probe(dev); 58 bus_enumerate_hinted_children(dev); 59 return (bus_generic_attach(dev)); 60 } 61 62 static int 63 mdio_detach(device_t dev) 64 { 65 66 bus_generic_detach(dev); 67 return (0); 68 } 69 70 static int 71 mdio_readreg(device_t dev, int phy, int reg) 72 { 73 74 return (MDIO_READREG(device_get_parent(dev), phy, reg)); 75 } 76 77 static int 78 mdio_writereg(device_t dev, int phy, int reg, int val) 79 { 80 81 return (MDIO_WRITEREG(device_get_parent(dev), phy, reg, val)); 82 } 83 84 static int 85 mdio_readextreg(device_t dev, int phy, int devad, int reg) 86 { 87 88 return (MDIO_READEXTREG(device_get_parent(dev), phy, devad, reg)); 89 } 90 91 static int 92 mdio_writeextreg(device_t dev, int phy, int devad, int reg, 93 int val) 94 { 95 96 return (MDIO_WRITEEXTREG(device_get_parent(dev), phy, devad, reg, val)); 97 } 98 99 static void 100 mdio_hinted_child(device_t dev, const char *name, int unit) 101 { 102 103 device_add_child(dev, name, unit); 104 } 105 106 static device_method_t mdio_methods[] = { 107 /* device interface */ 108 DEVMETHOD(device_identify, mdio_identify), 109 DEVMETHOD(device_probe, mdio_probe), 110 DEVMETHOD(device_attach, mdio_attach), 111 DEVMETHOD(device_detach, mdio_detach), 112 DEVMETHOD(device_shutdown, bus_generic_shutdown), 113 114 /* bus interface */ 115 DEVMETHOD(bus_add_child, device_add_child_ordered), 116 DEVMETHOD(bus_hinted_child, mdio_hinted_child), 117 118 /* MDIO access */ 119 DEVMETHOD(mdio_readreg, mdio_readreg), 120 DEVMETHOD(mdio_writereg, mdio_writereg), 121 DEVMETHOD(mdio_readextreg, mdio_readextreg), 122 DEVMETHOD(mdio_writeextreg, mdio_writeextreg), 123 124 DEVMETHOD_END 125 }; 126 127 driver_t mdio_driver = { 128 "mdio", 129 mdio_methods, 130 0 131 }; 132 133 MODULE_VERSION(mdio, 1); 134