1 /* $OpenBSD: nsphyter.c,v 1.3 2000/08/26 20:04:18 nate Exp $ */ 2 /* $NetBSD: nsphyter.c,v 1.5 2000/02/02 23:34:57 thorpej Exp $ */ 3 4 /*- 5 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 /* 42 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by Manuel Bouyer. 55 * 4. The name of the author may not be used to endorse or promote products 56 * derived from this software without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 63 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 64 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 65 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 66 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 67 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70 /* 71 * driver for National Semiconductor's DP83843 `PHYTER' ethernet 10/100 PHY 72 * Data Sheet available from www.national.com 73 */ 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/device.h> 79 #include <sys/malloc.h> 80 #include <sys/socket.h> 81 #include <sys/errno.h> 82 83 #include <net/if.h> 84 #include <net/if_media.h> 85 86 #include <dev/mii/mii.h> 87 #include <dev/mii/miivar.h> 88 #include <dev/mii/miidevs.h> 89 90 #include <dev/mii/nsphyterreg.h> 91 92 int nsphytermatch __P((struct device *, void *, void *)); 93 void nsphyterattach __P((struct device *, struct device *, void *)); 94 95 struct cfattach nsphyter_ca = { 96 sizeof(struct mii_softc), nsphytermatch, nsphyterattach, 97 mii_phy_detach, mii_phy_activate 98 }; 99 100 struct cfdriver nsphyter_cd = { 101 NULL, "nsphy", DV_DULL 102 }; 103 104 int nsphyter_service __P((struct mii_softc *, struct mii_data *, int)); 105 void nsphyter_status __P((struct mii_softc *)); 106 107 int 108 nsphytermatch(parent, match, aux) 109 struct device *parent; 110 void *match; 111 void *aux; 112 { 113 struct mii_attach_args *ma = aux; 114 115 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_NATSEMI && 116 MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83843) 117 return (10); 118 119 return (0); 120 } 121 122 void 123 nsphyterattach(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(": %s, rev. %d\n", MII_STR_NATSEMI_DP83843, 132 MII_REV(ma->mii_id2)); 133 134 sc->mii_inst = mii->mii_instance; 135 sc->mii_phy = ma->mii_phyno; 136 sc->mii_service = nsphyter_service; 137 sc->mii_status = nsphyter_status; 138 sc->mii_pdata = mii; 139 sc->mii_flags = mii->mii_flags; 140 141 mii_phy_reset(sc); 142 143 sc->mii_capabilities = 144 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 145 if (sc->mii_capabilities & BMSR_MEDIAMASK) 146 mii_phy_add_media(sc); 147 } 148 149 int 150 nsphyter_service(sc, mii, cmd) 151 struct mii_softc *sc; 152 struct mii_data *mii; 153 int cmd; 154 { 155 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 156 int reg; 157 158 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 159 return (ENXIO); 160 161 switch (cmd) { 162 case MII_POLLSTAT: 163 /* 164 * If we're not polling our PHY instance, just return. 165 */ 166 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 167 return (0); 168 break; 169 170 case MII_MEDIACHG: 171 /* 172 * If the media indicates a different PHY instance, 173 * isolate ourselves. 174 */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 176 reg = PHY_READ(sc, MII_BMCR); 177 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 178 return (0); 179 } 180 181 /* 182 * If the interface is not up, don't do anything. 183 */ 184 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 185 break; 186 187 mii_phy_setmedia(sc); 188 break; 189 190 case MII_TICK: 191 /* 192 * If we're not currently selected, just return. 193 */ 194 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 195 return (0); 196 197 if (mii_phy_tick(sc) == EJUSTRETURN) 198 return (0); 199 break; 200 201 case MII_DOWN: 202 mii_phy_down(sc); 203 return (0); 204 } 205 206 /* Update the media status. */ 207 mii_phy_status(sc); 208 209 /* Callback if something changed. */ 210 mii_phy_update(sc, cmd); 211 return (0); 212 } 213 214 void 215 nsphyter_status(sc) 216 struct mii_softc *sc; 217 { 218 struct mii_data *mii = sc->mii_pdata; 219 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 220 int bmsr, bmcr, physts; 221 222 mii->mii_media_status = IFM_AVALID; 223 mii->mii_media_active = IFM_ETHER; 224 225 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 226 physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS); 227 228 if (physts & PHYSTS_LINK) 229 mii->mii_media_status |= IFM_ACTIVE; 230 231 bmcr = PHY_READ(sc, MII_BMCR); 232 if (bmcr & BMCR_ISO) { 233 mii->mii_media_active |= IFM_NONE; 234 mii->mii_media_status = 0; 235 return; 236 } 237 238 if (bmcr & BMCR_LOOP) 239 mii->mii_media_active |= IFM_LOOP; 240 241 if (bmcr & BMCR_AUTOEN) { 242 /* 243 * The media status bits are only valid of autonegotiation 244 * has completed (or it's disabled). 245 */ 246 if ((bmsr & BMSR_ACOMP) == 0) { 247 /* Erg, still trying, I guess... */ 248 mii->mii_media_active |= IFM_NONE; 249 return; 250 } 251 252 if (physts & PHYSTS_SPEED10) 253 mii->mii_media_active |= IFM_10_T; 254 else 255 mii->mii_media_active |= IFM_100_TX; 256 if (physts & PHYSTS_DUPLEX) 257 mii->mii_media_active |= IFM_FDX; 258 } else 259 mii->mii_media_active = ife->ifm_media; 260 } 261