1 /* $NetBSD: inphy.c,v 1.31 2002/10/02 16:34:18 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. 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 Intel's i82555 ethernet 10/100 PHY 71 * Data Sheet available from www.intel.com 72 */ 73 74 #include <sys/cdefs.h> 75 __KERNEL_RCSID(0, "$NetBSD: inphy.c,v 1.31 2002/10/02 16:34:18 thorpej Exp $"); 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/device.h> 81 #include <sys/socket.h> 82 #include <sys/errno.h> 83 84 #include <net/if.h> 85 #include <net/if_media.h> 86 87 #include <dev/mii/mii.h> 88 #include <dev/mii/miivar.h> 89 #include <dev/mii/miidevs.h> 90 91 #include <dev/mii/inphyreg.h> 92 93 int inphymatch(struct device *, struct cfdata *, void *); 94 void inphyattach(struct device *, struct device *, void *); 95 96 CFATTACH_DECL(inphy, sizeof(struct mii_softc), 97 inphymatch, inphyattach, mii_phy_detach, mii_phy_activate); 98 99 int inphy_service(struct mii_softc *, struct mii_data *, int); 100 void inphy_status(struct mii_softc *); 101 102 const struct mii_phy_funcs inphy_funcs = { 103 inphy_service, inphy_status, mii_phy_reset, 104 }; 105 106 const struct mii_phydesc inphys[] = { 107 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82555, 108 MII_STR_yyINTEL_I82555 }, 109 110 { 0, 0, 111 NULL }, 112 }; 113 114 int 115 inphymatch(struct device *parent, struct cfdata *match, void *aux) 116 { 117 struct mii_attach_args *ma = aux; 118 119 if (mii_phy_match(ma, inphys) != NULL) 120 return (10); 121 122 return (0); 123 } 124 125 void 126 inphyattach(struct device *parent, struct device *self, void *aux) 127 { 128 struct mii_softc *sc = (struct mii_softc *)self; 129 struct mii_attach_args *ma = aux; 130 struct mii_data *mii = ma->mii_data; 131 const struct mii_phydesc *mpd; 132 133 mpd = mii_phy_match(ma, inphys); 134 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 135 136 sc->mii_inst = mii->mii_instance; 137 sc->mii_phy = ma->mii_phyno; 138 sc->mii_funcs = &inphy_funcs; 139 sc->mii_pdata = mii; 140 sc->mii_flags = ma->mii_flags; 141 sc->mii_anegticks = 5; 142 143 PHY_RESET(sc); 144 145 sc->mii_capabilities = 146 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 147 printf("%s: ", sc->mii_dev.dv_xname); 148 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 149 printf("no media present"); 150 else 151 mii_phy_add_media(sc); 152 printf("\n"); 153 } 154 155 int 156 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 157 { 158 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 159 int reg; 160 161 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 162 return (ENXIO); 163 164 switch (cmd) { 165 case MII_POLLSTAT: 166 /* 167 * If we're not polling our PHY instance, just return. 168 */ 169 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 170 return (0); 171 break; 172 173 case MII_MEDIACHG: 174 /* 175 * If the media indicates a different PHY instance, 176 * isolate ourselves. 177 */ 178 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 179 reg = PHY_READ(sc, MII_BMCR); 180 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 181 return (0); 182 } 183 184 /* 185 * If the interface is not up, don't do anything. 186 */ 187 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 188 break; 189 190 mii_phy_setmedia(sc); 191 break; 192 193 case MII_TICK: 194 /* 195 * If we're not currently selected, just return. 196 */ 197 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 198 return (0); 199 200 if (mii_phy_tick(sc) == EJUSTRETURN) 201 return (0); 202 break; 203 204 case MII_DOWN: 205 mii_phy_down(sc); 206 return (0); 207 } 208 209 /* Update the media status. */ 210 mii_phy_status(sc); 211 212 /* Callback if something changed. */ 213 mii_phy_update(sc, cmd); 214 return (0); 215 } 216 217 void 218 inphy_status(struct mii_softc *sc) 219 { 220 struct mii_data *mii = sc->mii_pdata; 221 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 222 int bmsr, bmcr, scr; 223 224 mii->mii_media_status = IFM_AVALID; 225 mii->mii_media_active = IFM_ETHER; 226 227 bmsr = PHY_READ(sc, MII_BMSR) | 228 PHY_READ(sc, MII_BMSR); 229 if (bmsr & BMSR_LINK) 230 mii->mii_media_status |= IFM_ACTIVE; 231 232 bmcr = PHY_READ(sc, MII_BMCR); 233 if (bmcr & BMCR_ISO) { 234 mii->mii_media_active |= IFM_NONE; 235 mii->mii_media_status = 0; 236 return; 237 } 238 239 if (bmcr & BMCR_LOOP) 240 mii->mii_media_active |= IFM_LOOP; 241 242 if (bmcr & BMCR_AUTOEN) { 243 if ((bmsr & BMSR_ACOMP) == 0) { 244 /* Erg, still trying, I guess... */ 245 mii->mii_media_active |= IFM_NONE; 246 return; 247 } 248 scr = PHY_READ(sc, MII_INPHY_SCR); 249 if (scr & SCR_T4) 250 mii->mii_media_active |= IFM_100_T4; 251 else if (scr & SCR_S100) 252 mii->mii_media_active |= IFM_100_TX; 253 else 254 mii->mii_media_active |= IFM_10_T; 255 if (scr & SCR_FDX) 256 mii->mii_media_active |= IFM_FDX; 257 } else 258 mii->mii_media_active = ife->ifm_media; 259 } 260