exphy.c revision 1.26
1 /* $NetBSD: exphy.c,v 1.26 2001/05/31 16:02:29 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/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 const struct mii_phy_funcs exphy_funcs = { 99 exphy_service, ukphy_status, exphy_reset, 100 }; 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 mii_softc *sc = (struct mii_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->mii_inst = mii->mii_instance; 138 sc->mii_phy = ma->mii_phyno; 139 sc->mii_funcs = &exphy_funcs; 140 sc->mii_pdata = mii; 141 sc->mii_flags = mii->mii_flags; 142 sc->mii_anegticks = 5; 143 144 /* 145 * The 3Com PHY can never be isolated, so never allow non-zero 146 * instances! 147 */ 148 if (mii->mii_instance != 0) { 149 printf("%s: ignoring this PHY, non-zero instance\n", 150 sc->mii_dev.dv_xname); 151 return; 152 } 153 sc->mii_flags |= MIIF_NOISOLATE; 154 155 PHY_RESET(sc); 156 157 sc->mii_capabilities = 158 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 159 printf("%s: ", sc->mii_dev.dv_xname); 160 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 161 printf("no media present"); 162 else 163 mii_phy_add_media(sc); 164 printf("\n"); 165 } 166 167 int 168 exphy_service(sc, mii, cmd) 169 struct mii_softc *sc; 170 struct mii_data *mii; 171 int cmd; 172 { 173 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 174 175 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 176 return (ENXIO); 177 178 /* 179 * We can't isolate the 3Com PHY, so it has to be the only one! 180 */ 181 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 182 panic("exphy_service: can't isolate 3Com PHY"); 183 184 switch (cmd) { 185 case MII_POLLSTAT: 186 break; 187 188 case MII_MEDIACHG: 189 /* 190 * If the interface is not up, don't do anything. 191 */ 192 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 193 break; 194 195 mii_phy_setmedia(sc); 196 break; 197 198 case MII_TICK: 199 /* 200 * Only used for autonegotiation. 201 */ 202 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 203 return (0); 204 205 if (mii_phy_tick(sc) == EJUSTRETURN) 206 return (0); 207 break; 208 209 case MII_DOWN: 210 mii_phy_down(sc); 211 return (0); 212 } 213 214 /* Update the media status. */ 215 mii_phy_status(sc); 216 217 /* Callback if something changed. */ 218 mii_phy_update(sc, cmd); 219 return (0); 220 } 221 222 void 223 exphy_reset(sc) 224 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
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