1 /* $OpenBSD: nsphyter.c,v 1.15 2008/06/26 05:42:16 ray 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 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by Manuel Bouyer. 48 * 4. The name of the author may not be used to endorse or promote products 49 * derived from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 54 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 55 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 56 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 60 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 */ 62 63 /* 64 * driver for National Semiconductor's DP83843 `PHYTER' ethernet 10/100 PHY 65 * Data Sheet available from www.national.com 66 */ 67 68 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/kernel.h> 71 #include <sys/device.h> 72 #include <sys/socket.h> 73 #include <sys/errno.h> 74 75 #include <net/if.h> 76 #include <net/if_media.h> 77 78 #include <dev/mii/mii.h> 79 #include <dev/mii/miivar.h> 80 #include <dev/mii/miidevs.h> 81 82 #include <dev/mii/nsphyterreg.h> 83 84 int nsphytermatch(struct device *, void *, void *); 85 void nsphyterattach(struct device *, struct device *, void *); 86 87 struct cfattach nsphyter_ca = { 88 sizeof(struct mii_softc), nsphytermatch, nsphyterattach, 89 mii_phy_detach, mii_phy_activate 90 }; 91 92 struct cfdriver nsphyter_cd = { 93 NULL, "nsphyter", DV_DULL 94 }; 95 96 int nsphyter_service(struct mii_softc *, struct mii_data *, int); 97 void nsphyter_status(struct mii_softc *); 98 99 const struct mii_phy_funcs nsphyter_funcs = { 100 nsphyter_service, nsphyter_status, mii_phy_reset, 101 }; 102 103 static const struct mii_phydesc nsphyterphys[] = { 104 { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83815, 105 MII_STR_NATSEMI_DP83815 }, 106 { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83843, 107 MII_STR_NATSEMI_DP83843 }, 108 { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83847, 109 MII_STR_NATSEMI_DP83847 }, 110 111 { 0, 0, 112 NULL }, 113 }; 114 115 int 116 nsphytermatch(struct device *parent, void *match, void *aux) 117 { 118 struct mii_attach_args *ma = aux; 119 120 if (mii_phy_match(ma, nsphyterphys) != NULL) 121 return (10); 122 123 return (0); 124 } 125 126 void 127 nsphyterattach(struct device *parent, struct device *self, void *aux) 128 { 129 struct mii_softc *sc = (struct mii_softc *)self; 130 struct mii_attach_args *ma = aux; 131 struct mii_data *mii = ma->mii_data; 132 const struct mii_phydesc *mpd; 133 134 mpd = mii_phy_match(ma, nsphyterphys); 135 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 136 137 sc->mii_inst = mii->mii_instance; 138 sc->mii_phy = ma->mii_phyno; 139 sc->mii_funcs = &nsphyter_funcs; 140 sc->mii_pdata = mii; 141 sc->mii_flags = ma->mii_flags; 142 143 PHY_RESET(sc); 144 145 sc->mii_capabilities = 146 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 147 if (sc->mii_capabilities & BMSR_MEDIAMASK) 148 mii_phy_add_media(sc); 149 } 150 151 int 152 nsphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 153 { 154 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 155 int reg; 156 157 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 158 return (ENXIO); 159 160 switch (cmd) { 161 case MII_POLLSTAT: 162 /* 163 * If we're not polling our PHY instance, just return. 164 */ 165 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 166 return (0); 167 break; 168 169 case MII_MEDIACHG: 170 /* 171 * If the media indicates a different PHY instance, 172 * isolate ourselves. 173 */ 174 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 175 reg = PHY_READ(sc, MII_BMCR); 176 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 177 return (0); 178 } 179 180 /* 181 * If the interface is not up, don't do anything. 182 */ 183 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 184 break; 185 186 mii_phy_setmedia(sc); 187 break; 188 189 case MII_TICK: 190 /* 191 * If we're not currently selected, just return. 192 */ 193 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 194 return (0); 195 196 if (mii_phy_tick(sc) == EJUSTRETURN) 197 return (0); 198 break; 199 200 case MII_DOWN: 201 mii_phy_down(sc); 202 return (0); 203 } 204 205 /* Update the media status. */ 206 mii_phy_status(sc); 207 208 /* Callback if something changed. */ 209 mii_phy_update(sc, cmd); 210 return (0); 211 } 212 213 void 214 nsphyter_status(struct mii_softc *sc) 215 { 216 struct mii_data *mii = sc->mii_pdata; 217 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 218 int bmsr, bmcr, physts; 219 220 mii->mii_media_status = IFM_AVALID; 221 mii->mii_media_active = IFM_ETHER; 222 223 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 224 physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS); 225 226 if (physts & PHYSTS_LINK) 227 mii->mii_media_status |= IFM_ACTIVE; 228 229 bmcr = PHY_READ(sc, MII_BMCR); 230 if (bmcr & BMCR_ISO) { 231 mii->mii_media_active |= IFM_NONE; 232 mii->mii_media_status = 0; 233 return; 234 } 235 236 if (bmcr & BMCR_LOOP) 237 mii->mii_media_active |= IFM_LOOP; 238 239 if (bmcr & BMCR_AUTOEN) { 240 /* 241 * The media status bits are only valid if autonegotiation 242 * has completed (or it's disabled). 243 */ 244 if ((bmsr & BMSR_ACOMP) == 0) { 245 /* Erg, still trying, I guess... */ 246 mii->mii_media_active |= IFM_NONE; 247 return; 248 } 249 250 if (physts & PHYSTS_SPEED10) 251 mii->mii_media_active |= IFM_10_T; 252 else 253 mii->mii_media_active |= IFM_100_TX; 254 255 if (physts & PHYSTS_DUPLEX) 256 mii->mii_media_active |= IFM_FDX; 257 else 258 mii->mii_media_active |= IFM_HDX; 259 } else 260 mii->mii_media_active = ife->ifm_media; 261 } 262