exphy.c revision 1.14
1 /* $NetBSD: exphy.c,v 1.14 1998/11/04 23:59:51 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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 struct exphy_softc { 88 struct mii_softc sc_mii; /* generic PHY */ 89 int sc_active; 90 }; 91 92 int exphymatch __P((struct device *, struct cfdata *, void *)); 93 void exphyattach __P((struct device *, struct device *, void *)); 94 95 struct cfattach exphy_ca = { 96 sizeof(struct exphy_softc), exphymatch, exphyattach 97 }; 98 99 int exphy_service __P((struct mii_softc *, struct mii_data *, int)); 100 void exphy_reset __P((struct exphy_softc *)); 101 102 int 103 exphymatch(parent, match, aux) 104 struct device *parent; 105 struct cfdata *match; 106 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(parent, self, aux) 128 struct device *parent, *self; 129 void *aux; 130 { 131 struct exphy_softc *sc = (struct exphy_softc *)self; 132 struct mii_attach_args *ma = aux; 133 struct mii_data *mii = ma->mii_data; 134 135 printf(": 3Com internal media interface\n"); 136 137 sc->sc_mii.mii_inst = mii->mii_instance; 138 sc->sc_mii.mii_phy = ma->mii_phyno; 139 sc->sc_mii.mii_service = exphy_service; 140 sc->sc_mii.mii_pdata = mii; 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->sc_mii.mii_dev.dv_xname); 149 return; 150 } 151 sc->sc_mii.mii_flags |= MIIF_NOISOLATE; 152 153 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 154 155 #if 0 /* See above. */ 156 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst), 157 BMCR_ISO); 158 #endif 159 160 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->sc_mii.mii_inst), 161 BMCR_LOOP|BMCR_S100); 162 163 exphy_reset(sc); 164 165 sc->sc_mii.mii_capabilities = 166 PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask; 167 printf("%s: ", sc->sc_mii.mii_dev.dv_xname); 168 if ((sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) == 0) 169 printf("no media present"); 170 else 171 mii_add_media(mii, sc->sc_mii.mii_capabilities, 172 sc->sc_mii.mii_inst); 173 printf("\n"); 174 #undef ADD 175 } 176 177 int 178 exphy_service(self, mii, cmd) 179 struct mii_softc *self; 180 struct mii_data *mii; 181 int cmd; 182 { 183 struct exphy_softc *sc = (struct exphy_softc *)self; 184 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 185 186 /* 187 * We can't isolate the 3Com PHY, so it has to be the only one! 188 */ 189 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 190 panic("exphy_service: can't isolate 3Com PHY"); 191 192 switch (cmd) { 193 case MII_POLLSTAT: 194 break; 195 196 case MII_MEDIACHG: 197 /* 198 * If the interface is not up, don't do anything. 199 */ 200 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 201 break; 202 203 switch (IFM_SUBTYPE(ife->ifm_media)) { 204 case IFM_AUTO: 205 /* 206 * If we're already in auto mode, just return. 207 */ 208 if (PHY_READ(&sc->sc_mii, MII_BMCR) & BMCR_AUTOEN) 209 return (0); 210 (void) mii_phy_auto(&sc->sc_mii); 211 break; 212 case IFM_100_T4: 213 /* 214 * XXX Not supported as a manual setting right now. 215 */ 216 return (EINVAL); 217 default: 218 /* 219 * BMCR data is stored in the ifmedia entry. 220 */ 221 PHY_WRITE(&sc->sc_mii, MII_ANAR, 222 mii_anar(ife->ifm_media)); 223 PHY_WRITE(&sc->sc_mii, MII_BMCR, ife->ifm_data); 224 } 225 break; 226 227 case MII_TICK: 228 /* 229 * Only used for autonegotiation. 230 */ 231 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 232 return (0); 233 234 /* 235 * Is the interface even up? 236 */ 237 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 238 return (0); 239 240 /* 241 * The 3Com PHY's autonegotiation doesn't need to be 242 * kicked; it continues in the background. 243 */ 244 break; 245 } 246 247 /* Update the media status. */ 248 ukphy_status(&sc->sc_mii); 249 250 /* Callback if something changed. */ 251 if (sc->sc_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 252 (*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent); 253 sc->sc_active = mii->mii_media_active; 254 } 255 return (0); 256 } 257 258 void 259 exphy_reset(sc) 260 struct exphy_softc *sc; 261 { 262 263 mii_phy_reset(&sc->sc_mii); 264 265 /* 266 * XXX 3Com PHY doesn't set the BMCR properly after 267 * XXX reset, which breaks autonegotiation. 268 */ 269 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 270 } 271
Indexes created Wed Oct 15 16:09:53 GMT 2025