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