exphy.c revision 1.20
1 /* $NetBSD: exphy.c,v 1.20 2000/02/02 08:05:32 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 * 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/param.h> 74 #include <sys/systm.h> 75 #include <sys/kernel.h> 76 #include <sys/device.h> 77 #include <sys/malloc.h> 78 #include <sys/socket.h> 79 80 #include <net/if.h> 81 #include <net/if_media.h> 82 83 #include <dev/mii/mii.h> 84 #include <dev/mii/miivar.h> 85 #include <dev/mii/miidevs.h> 86 87 int exphymatch __P((struct device *, struct cfdata *, void *)); 88 void exphyattach __P((struct device *, struct device *, void *)); 89 90 struct cfattach exphy_ca = { 91 sizeof(struct mii_softc), exphymatch, exphyattach, mii_phy_detach, 92 mii_phy_activate 93 }; 94 95 int exphy_service __P((struct mii_softc *, struct mii_data *, int)); 96 void exphy_reset __P((struct mii_softc *)); 97 98 int 99 exphymatch(parent, match, aux) 100 struct device *parent; 101 struct cfdata *match; 102 void *aux; 103 { 104 struct mii_attach_args *ma = aux; 105 106 /* 107 * Argh, 3Com PHY reports oui == 0 model == 0! 108 */ 109 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 && 110 MII_MODEL(ma->mii_id2) != 0) 111 return (0); 112 113 /* 114 * Make sure the parent is an `ex'. 115 */ 116 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "ex") != 0) 117 return (0); 118 119 return (10); 120 } 121 122 void 123 exphyattach(parent, self, aux) 124 struct device *parent, *self; 125 void *aux; 126 { 127 struct mii_softc *sc = (struct mii_softc *)self; 128 struct mii_attach_args *ma = aux; 129 struct mii_data *mii = ma->mii_data; 130 131 printf(": 3Com internal media interface\n"); 132 133 sc->mii_inst = mii->mii_instance; 134 sc->mii_phy = ma->mii_phyno; 135 sc->mii_service = exphy_service; 136 sc->mii_pdata = mii; 137 138 /* 139 * The 3Com PHY can never be isolated, so never allow non-zero 140 * instances! 141 */ 142 if (mii->mii_instance != 0) { 143 printf("%s: ignoring this PHY, non-zero instance\n", 144 sc->mii_dev.dv_xname); 145 return; 146 } 147 sc->mii_flags |= MIIF_NOISOLATE; 148 149 exphy_reset(sc); 150 151 sc->mii_capabilities = 152 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 153 printf("%s: ", sc->mii_dev.dv_xname); 154 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 155 printf("no media present"); 156 else 157 mii_phy_add_media(sc); 158 printf("\n"); 159 } 160 161 int 162 exphy_service(sc, mii, cmd) 163 struct mii_softc *sc; 164 struct mii_data *mii; 165 int cmd; 166 { 167 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 168 169 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 170 return (ENXIO); 171 172 /* 173 * We can't isolate the 3Com PHY, so it has to be the only one! 174 */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 176 panic("exphy_service: can't isolate 3Com PHY"); 177 178 switch (cmd) { 179 case MII_POLLSTAT: 180 break; 181 182 case MII_MEDIACHG: 183 /* 184 * If the interface is not up, don't do anything. 185 */ 186 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 187 break; 188 189 switch (IFM_SUBTYPE(ife->ifm_media)) { 190 case IFM_AUTO: 191 /* 192 * If we're already in auto mode, just return. 193 */ 194 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 195 return (0); 196 (void) mii_phy_auto(sc, 1); 197 break; 198 default: 199 mii_phy_setmedia(sc); 200 } 201 break; 202 203 case MII_TICK: 204 /* 205 * Only used for autonegotiation. 206 */ 207 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 208 return (0); 209 210 /* 211 * Is the interface even up? 212 */ 213 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 214 return (0); 215 216 /* 217 * The 3Com PHY's autonegotiation doesn't need to be 218 * kicked; it continues in the background. 219 */ 220 break; 221 222 case MII_DOWN: 223 mii_phy_down(sc); 224 return (0); 225 } 226 227 /* Update the media status. */ 228 ukphy_status(sc); 229 230 /* Callback if something changed. */ 231 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 232 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 233 sc->mii_active = mii->mii_media_active; 234 } 235 return (0); 236 } 237 238 void 239 exphy_reset(sc) 240 struct mii_softc *sc; 241 { 242 243 mii_phy_reset(sc); 244 245 /* 246 * XXX 3Com PHY doesn't set the BMCR properly after 247 * XXX reset, which breaks autonegotiation. 248 */ 249 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 250 } 251
Indexes created Tue Sep 23 23:09:58 GMT 2025