exphy.c revision 1.18
1 /* $NetBSD: exphy.c,v 1.18 1999/11/12 18:12:59 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 92 }; 93 94 int exphy_service __P((struct mii_softc *, struct mii_data *, int)); 95 void exphy_reset __P((struct mii_softc *)); 96 97 int 98 exphymatch(parent, match, aux) 99 struct device *parent; 100 struct cfdata *match; 101 void *aux; 102 { 103 struct mii_attach_args *ma = aux; 104 105 /* 106 * Argh, 3Com PHY reports oui == 0 model == 0! 107 */ 108 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 && 109 MII_MODEL(ma->mii_id2) != 0) 110 return (0); 111 112 /* 113 * Make sure the parent is an `ex'. 114 */ 115 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "ex") != 0) 116 return (0); 117 118 return (10); 119 } 120 121 void 122 exphyattach(parent, self, aux) 123 struct device *parent, *self; 124 void *aux; 125 { 126 struct mii_softc *sc = (struct mii_softc *)self; 127 struct mii_attach_args *ma = aux; 128 struct mii_data *mii = ma->mii_data; 129 130 printf(": 3Com internal media interface\n"); 131 132 sc->mii_inst = mii->mii_instance; 133 sc->mii_phy = ma->mii_phyno; 134 sc->mii_service = exphy_service; 135 sc->mii_pdata = mii; 136 137 /* 138 * The 3Com PHY can never be isolated, so never allow non-zero 139 * instances! 140 */ 141 if (mii->mii_instance != 0) { 142 printf("%s: ignoring this PHY, non-zero instance\n", 143 sc->mii_dev.dv_xname); 144 return; 145 } 146 sc->mii_flags |= MIIF_NOISOLATE; 147 148 exphy_reset(sc); 149 150 sc->mii_capabilities = 151 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 152 printf("%s: ", sc->mii_dev.dv_xname); 153 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 154 printf("no media present"); 155 else 156 mii_add_media(sc); 157 printf("\n"); 158 } 159 160 int 161 exphy_service(sc, mii, cmd) 162 struct mii_softc *sc; 163 struct mii_data *mii; 164 int cmd; 165 { 166 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 167 168 /* 169 * We can't isolate the 3Com PHY, so it has to be the only one! 170 */ 171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 172 panic("exphy_service: can't isolate 3Com PHY"); 173 174 switch (cmd) { 175 case MII_POLLSTAT: 176 break; 177 178 case MII_MEDIACHG: 179 /* 180 * If the interface is not up, don't do anything. 181 */ 182 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 183 break; 184 185 switch (IFM_SUBTYPE(ife->ifm_media)) { 186 case IFM_AUTO: 187 /* 188 * If we're already in auto mode, just return. 189 */ 190 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 191 return (0); 192 (void) mii_phy_auto(sc, 1); 193 break; 194 default: 195 mii_phy_setmedia(sc); 196 } 197 break; 198 199 case MII_TICK: 200 /* 201 * Only used for autonegotiation. 202 */ 203 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 204 return (0); 205 206 /* 207 * Is the interface even up? 208 */ 209 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 210 return (0); 211 212 /* 213 * The 3Com PHY's autonegotiation doesn't need to be 214 * kicked; it continues in the background. 215 */ 216 break; 217 218 case MII_DOWN: 219 mii_phy_down(sc); 220 return (0); 221 } 222 223 /* Update the media status. */ 224 ukphy_status(sc); 225 226 /* Callback if something changed. */ 227 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 228 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 229 sc->mii_active = mii->mii_media_active; 230 } 231 return (0); 232 } 233 234 void 235 exphy_reset(sc) 236 struct mii_softc *sc; 237 { 238 239 mii_phy_reset(sc); 240 241 /* 242 * XXX 3Com PHY doesn't set the BMCR properly after 243 * XXX reset, which breaks autonegotiation. 244 */ 245 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 246 } 247
Indexes created Thu Sep 25 16:09:42 GMT 2025