xlphy.c revision 213229
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: head/sys/dev/mii/exphy.c 213229 2010-09-27 20:31:03Z marius $"); 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 80static int exphy_probe(device_t); 81static int exphy_attach(device_t); 82 83static device_method_t exphy_methods[] = { 84 /* device interface */ 85 DEVMETHOD(device_probe, exphy_probe), 86 DEVMETHOD(device_attach, exphy_attach), 87 DEVMETHOD(device_detach, mii_phy_detach), 88 DEVMETHOD(device_shutdown, bus_generic_shutdown), 89 { 0, 0 } 90}; 91 92static devclass_t exphy_devclass; 93 94static driver_t exphy_driver = { 95 "xlphy", 96 exphy_methods, 97 sizeof(struct mii_softc) 98}; 99 100DRIVER_MODULE(xlphy, miibus, exphy_driver, exphy_devclass, 0, 0); 101 102static int exphy_service(struct mii_softc *, struct mii_data *, int); 103static void exphy_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 */ 112static const struct mii_phydesc exphys[] = { 113 { 0, 0, "3Com internal media interface" }, 114 MII_PHY_DESC(BROADCOM, 3C905C), 115 MII_PHY_END 116}; 117 118static int 119exphy_probe(device_t dev) 120{ 121 122 if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))), 123 "xl") == 0) 124 return (mii_phy_dev_probe(dev, exphys, BUS_PROBE_DEFAULT)); 125 return (ENXIO); 126} 127 128static int 129exphy_attach(device_t dev) 130{ 131 struct mii_softc *sc; 132 struct mii_attach_args *ma; 133 struct mii_data *mii; 134 135 sc = device_get_softc(dev); 136 ma = device_get_ivars(dev); 137 sc->mii_dev = device_get_parent(dev); 138 mii = ma->mii_data; 139 140 /* 141 * The 3Com PHY can never be isolated, so never allow non-zero 142 * instances! 143 */ 144 if (mii->mii_instance != 0) { 145 device_printf(dev, "ignoring this PHY, non-zero instance\n"); 146 return (ENXIO); 147 } 148 149 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 150 151 sc->mii_inst = mii->mii_instance; 152 sc->mii_phy = ma->mii_phyno; 153 sc->mii_service = exphy_service; 154 sc->mii_pdata = mii; 155 mii->mii_instance++; 156 157 sc->mii_flags |= MIIF_NOISOLATE; 158 159#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 160 161 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 162 MII_MEDIA_100_TX); 163 164 exphy_reset(sc); 165 166 sc->mii_capabilities = 167 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 168 device_printf(dev, " "); 169 mii_phy_add_media(sc); 170 printf("\n"); 171#undef ADD 172 MIIBUS_MEDIAINIT(sc->mii_dev); 173 return (0); 174} 175 176static int 177exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 178{ 179 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 180 181 /* 182 * We can't isolate the 3Com PHY, so it has to be the only one! 183 */ 184 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 185 panic("exphy_service: can't isolate 3Com PHY"); 186 187 switch (cmd) { 188 case MII_POLLSTAT: 189 break; 190 191 case MII_MEDIACHG: 192 /* 193 * If the interface is not up, don't do anything. 194 */ 195 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 196 break; 197 198 mii_phy_setmedia(sc); 199 break; 200 201 case MII_TICK: 202 /* 203 * Is the interface even up? 204 */ 205 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 206 return (0); 207 208 /* 209 * The 3Com PHY's autonegotiation doesn't need to be 210 * kicked; it continues in the background. 211 */ 212 break; 213 } 214 215 /* Update the media status. */ 216 ukphy_status(sc); 217 218 /* Callback if something changed. */ 219 mii_phy_update(sc, cmd); 220 return (0); 221} 222 223static void 224exphy_reset(struct mii_softc *sc) 225{ 226 227 mii_phy_reset(sc); 228 229 /* 230 * XXX 3Com PHY doesn't set the BMCR properly after 231 * XXX reset, which breaks autonegotiation. 232 */ 233 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 234} 235