nsphyter.c revision 1.5
1 /* $NetBSD: nsphyter.c,v 1.5 2000/02/02 23:34:57 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. 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 National Semiconductor's DP83843 `PHYTER' ethernet 10/100 PHY 71 * Data Sheet available from www.national.com 72 */ 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/kernel.h> 77 #include <sys/device.h> 78 #include <sys/malloc.h> 79 #include <sys/socket.h> 80 #include <sys/errno.h> 81 82 #include <net/if.h> 83 #include <net/if_media.h> 84 85 #include <dev/mii/mii.h> 86 #include <dev/mii/miivar.h> 87 #include <dev/mii/miidevs.h> 88 89 #include <dev/mii/nsphyterreg.h> 90 91 int nsphytermatch __P((struct device *, struct cfdata *, void *)); 92 void nsphyterattach __P((struct device *, struct device *, void *)); 93 94 struct cfattach nsphyter_ca = { 95 sizeof(struct mii_softc), nsphytermatch, nsphyterattach, 96 mii_phy_detach, mii_phy_activate 97 }; 98 99 int nsphyter_service __P((struct mii_softc *, struct mii_data *, int)); 100 void nsphyter_status __P((struct mii_softc *)); 101 102 int 103 nsphytermatch(parent, match, aux) 104 struct device *parent; 105 struct cfdata *match; 106 void *aux; 107 { 108 struct mii_attach_args *ma = aux; 109 110 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_NATSEMI && 111 MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83843) 112 return (10); 113 114 return (0); 115 } 116 117 void 118 nsphyterattach(parent, self, aux) 119 struct device *parent, *self; 120 void *aux; 121 { 122 struct mii_softc *sc = (struct mii_softc *)self; 123 struct mii_attach_args *ma = aux; 124 struct mii_data *mii = ma->mii_data; 125 126 printf(": %s, rev. %d\n", MII_STR_NATSEMI_DP83843, 127 MII_REV(ma->mii_id2)); 128 129 sc->mii_inst = mii->mii_instance; 130 sc->mii_phy = ma->mii_phyno; 131 sc->mii_service = nsphyter_service; 132 sc->mii_status = nsphyter_status; 133 sc->mii_pdata = mii; 134 sc->mii_flags = mii->mii_flags; 135 136 mii_phy_reset(sc); 137 138 sc->mii_capabilities = 139 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 140 printf("%s: ", sc->mii_dev.dv_xname); 141 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 142 printf("no media present"); 143 else 144 mii_phy_add_media(sc); 145 printf("\n"); 146 } 147 148 int 149 nsphyter_service(sc, mii, cmd) 150 struct mii_softc *sc; 151 struct mii_data *mii; 152 int cmd; 153 { 154 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 155 int reg; 156 157 switch (cmd) { 158 case MII_POLLSTAT: 159 /* 160 * If we're not polling our PHY instance, just return. 161 */ 162 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 163 return (0); 164 break; 165 166 case MII_MEDIACHG: 167 /* 168 * If the media indicates a different PHY instance, 169 * isolate ourselves. 170 */ 171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 172 reg = PHY_READ(sc, MII_BMCR); 173 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 174 return (0); 175 } 176 177 /* 178 * If the interface is not up, don't do anything. 179 */ 180 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 181 break; 182 183 mii_phy_setmedia(sc); 184 break; 185 186 case MII_TICK: 187 /* 188 * If we're not currently selected, just return. 189 */ 190 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 191 return (0); 192 193 /* 194 * Only used for autonegotiation. 195 */ 196 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 197 return (0); 198 199 /* 200 * Is the interface even up? 201 */ 202 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 203 return (0); 204 205 /* 206 * Check to see if we have link. If we do, we don't 207 * need to restart the autonegotiation process. Read 208 * the BMSR twice in case it's latched. 209 */ 210 reg = PHY_READ(sc, MII_BMSR) | 211 PHY_READ(sc, MII_BMSR); 212 if (reg & BMSR_LINK) 213 return (0); 214 215 /* 216 * Only retry autonegotiation every 5 seconds. 217 */ 218 if (++sc->mii_ticks != 5) 219 return (0); 220 221 sc->mii_ticks = 0; 222 mii_phy_reset(sc); 223 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 224 return (0); 225 break; 226 227 case MII_DOWN: 228 mii_phy_down(sc); 229 return (0); 230 } 231 232 /* Update the media status. */ 233 mii_phy_status(sc); 234 235 /* Callback if something changed. */ 236 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 237 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 238 sc->mii_active = mii->mii_media_active; 239 } 240 return (0); 241 } 242 243 void 244 nsphyter_status(sc) 245 struct mii_softc *sc; 246 { 247 struct mii_data *mii = sc->mii_pdata; 248 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 249 int bmsr, bmcr, physts; 250 251 mii->mii_media_status = IFM_AVALID; 252 mii->mii_media_active = IFM_ETHER; 253 254 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 255 physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS); 256 257 if (physts & PHYSTS_LINK) 258 mii->mii_media_status |= IFM_ACTIVE; 259 260 bmcr = PHY_READ(sc, MII_BMCR); 261 if (bmcr & BMCR_ISO) { 262 mii->mii_media_active |= IFM_NONE; 263 mii->mii_media_status = 0; 264 return; 265 } 266 267 if (bmcr & BMCR_LOOP) 268 mii->mii_media_active |= IFM_LOOP; 269 270 if (bmcr & BMCR_AUTOEN) { 271 /* 272 * The media status bits are only valid of autonegotiation 273 * has completed (or it's disabled). 274 */ 275 if ((bmsr & BMSR_ACOMP) == 0) { 276 /* Erg, still trying, I guess... */ 277 mii->mii_media_active |= IFM_NONE; 278 return; 279 } 280 281 if (physts & PHYSTS_SPEED10) 282 mii->mii_media_active |= IFM_10_T; 283 else 284 mii->mii_media_active |= IFM_100_TX; 285 if (physts & PHYSTS_DUPLEX) 286 mii->mii_media_active |= IFM_FDX; 287 } else 288 mii->mii_media_active = ife->ifm_media; 289 } 290
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