1 /* $NetBSD: exphy.c,v 1.29 2002/03/25 20:51:24 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Manuel Bouyer. 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 /* 70 * driver for 3Com internal PHYs 71 */ 72 73 #include <sys/cdefs.h> 74 __KERNEL_RCSID(0, "$NetBSD: exphy.c,v 1.29 2002/03/25 20:51:24 thorpej Exp $"); 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/kernel.h> 79 #include <sys/device.h> 80 #include <sys/malloc.h> 81 #include <sys/socket.h> 82 83 #include <net/if.h> 84 #include <net/if_media.h> 85 86 #include <dev/mii/mii.h> 87 #include <dev/mii/miivar.h> 88 #include <dev/mii/miidevs.h> 89 90 int exphymatch(struct device *, struct cfdata *, void *); 91 void exphyattach(struct device *, struct device *, void *); 92 93 struct cfattach exphy_ca = { 94 sizeof(struct mii_softc), exphymatch, exphyattach, mii_phy_detach, 95 mii_phy_activate 96 }; 97 98 int exphy_service(struct mii_softc *, struct mii_data *, int); 99 void exphy_reset(struct mii_softc *); 100 101 const struct mii_phy_funcs exphy_funcs = { 102 exphy_service, ukphy_status, exphy_reset, 103 }; 104 105 int 106 exphymatch(struct device *parent, struct cfdata *match, void *aux) 107 { 108 struct mii_attach_args *ma = aux; 109 110 /* 111 * Argh, 3Com PHY reports oui == 0 model == 0! 112 */ 113 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 && 114 MII_MODEL(ma->mii_id2) != 0) 115 return (0); 116 117 /* 118 * Make sure the parent is an `ex'. 119 */ 120 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "ex") != 0) 121 return (0); 122 123 return (10); 124 } 125 126 void 127 exphyattach(struct device *parent, struct device *self, void *aux) 128 { 129 struct mii_softc *sc = (struct mii_softc *)self; 130 struct mii_attach_args *ma = aux; 131 struct mii_data *mii = ma->mii_data; 132 133 printf(": 3Com internal media interface\n"); 134 135 sc->mii_inst = mii->mii_instance; 136 sc->mii_phy = ma->mii_phyno; 137 sc->mii_funcs = &exphy_funcs; 138 sc->mii_pdata = mii; 139 sc->mii_flags = ma->mii_flags; 140 sc->mii_anegticks = 5; 141 142 /* 143 * The 3Com PHY can never be isolated, so never allow non-zero 144 * instances! 145 */ 146 if (mii->mii_instance != 0) { 147 printf("%s: ignoring this PHY, non-zero instance\n", 148 sc->mii_dev.dv_xname); 149 return; 150 } 151 sc->mii_flags |= MIIF_NOISOLATE; 152 153 PHY_RESET(sc); 154 155 sc->mii_capabilities = 156 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 157 printf("%s: ", sc->mii_dev.dv_xname); 158 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 159 printf("no media present"); 160 else 161 mii_phy_add_media(sc); 162 printf("\n"); 163 } 164 165 int 166 exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 167 { 168 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 169 170 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 171 return (ENXIO); 172 173 /* 174 * We can't isolate the 3Com PHY, so it has to be the only one! 175 */ 176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 177 panic("exphy_service: can't isolate 3Com PHY"); 178 179 switch (cmd) { 180 case MII_POLLSTAT: 181 break; 182 183 case MII_MEDIACHG: 184 /* 185 * If the interface is not up, don't do anything. 186 */ 187 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 188 break; 189 190 mii_phy_setmedia(sc); 191 break; 192 193 case MII_TICK: 194 /* 195 * Only used for autonegotiation. 196 */ 197 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 198 return (0); 199 200 if (mii_phy_tick(sc) == EJUSTRETURN) 201 return (0); 202 break; 203 204 case MII_DOWN: 205 mii_phy_down(sc); 206 return (0); 207 } 208 209 /* Update the media status. */ 210 mii_phy_status(sc); 211 212 /* Callback if something changed. */ 213 mii_phy_update(sc, cmd); 214 return (0); 215 } 216 217 void 218 exphy_reset(struct mii_softc *sc) 219 { 220 221 mii_phy_reset(sc); 222 223 /* 224 * XXX 3Com PHY doesn't set the BMCR properly after 225 * XXX reset, which breaks autonegotiation. 226 */ 227 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 228 } 229