1 /* $NetBSD: exphy.c,v 1.16 1999/04/23 04:24:32 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center, and by Frank van der Linden. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /*- 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 #include <sys/cdefs.h> 58 __FBSDID("$FreeBSD$"); 59 60 /* 61 * driver for 3Com internal PHYs 62 */ 63 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/socket.h> 68 #include <sys/module.h> 69 #include <sys/bus.h> 70 71 #include <net/if.h> 72 #include <net/if_media.h> 73 74 #include <dev/mii/mii.h> 75 #include <dev/mii/miivar.h> 76 #include "miidevs.h" 77 78 #include "miibus_if.h" 79 80 static int xlphy_probe(device_t); 81 static int xlphy_attach(device_t); 82 83 static device_method_t xlphy_methods[] = { 84 /* device interface */ 85 DEVMETHOD(device_probe, xlphy_probe), 86 DEVMETHOD(device_attach, xlphy_attach), 87 DEVMETHOD(device_detach, mii_phy_detach), 88 DEVMETHOD(device_shutdown, bus_generic_shutdown), 89 DEVMETHOD_END 90 }; 91 92 static devclass_t xlphy_devclass; 93 94 static driver_t xlphy_driver = { 95 "xlphy", 96 xlphy_methods, 97 sizeof(struct mii_softc) 98 }; 99 100 DRIVER_MODULE(xlphy, miibus, xlphy_driver, xlphy_devclass, 0, 0); 101 102 static int xlphy_service(struct mii_softc *, struct mii_data *, int); 103 static void xlphy_reset(struct mii_softc *); 104 105 /* 106 * Some 3Com internal PHYs report zero for OUI and model, others use 107 * actual values. 108 * Note that the 3Com internal PHYs having OUI 0x105a and model 0 are 109 * handled fine by ukphy(4); they can be isolated and don't require 110 * special treatment after reset. 111 */ 112 static const struct mii_phydesc xlphys[] = { 113 { 0, 0, "3Com internal media interface" }, 114 MII_PHY_DESC(xxBROADCOM, 3C905C), 115 MII_PHY_END 116 }; 117 118 static const struct mii_phy_funcs xlphy_funcs = { 119 xlphy_service, 120 ukphy_status, 121 xlphy_reset 122 }; 123 124 static int 125 xlphy_probe(device_t dev) 126 { 127 128 if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))), 129 "xl") == 0) 130 return (mii_phy_dev_probe(dev, xlphys, BUS_PROBE_DEFAULT)); 131 return (ENXIO); 132 } 133 134 static int 135 xlphy_attach(device_t dev) 136 { 137 138 /* 139 * The 3Com PHY can never be isolated. 140 */ 141 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 142 &xlphy_funcs, 1); 143 return (0); 144 } 145 146 static int 147 xlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 148 { 149 150 switch (cmd) { 151 case MII_POLLSTAT: 152 break; 153 154 case MII_MEDIACHG: 155 mii_phy_setmedia(sc); 156 break; 157 158 case MII_TICK: 159 /* 160 * The 3Com PHY's autonegotiation doesn't need to be 161 * kicked; it continues in the background. 162 */ 163 break; 164 } 165 166 /* Update the media status. */ 167 PHY_STATUS(sc); 168 169 /* Callback if something changed. */ 170 mii_phy_update(sc, cmd); 171 return (0); 172 } 173 174 static void 175 xlphy_reset(struct mii_softc *sc) 176 { 177 178 mii_phy_reset(sc); 179 180 /* 181 * XXX 3Com PHY doesn't set the BMCR properly after 182 * XXX reset, which breaks autonegotiation. 183 */ 184 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 185 } 186