inphy.c revision 1.44
1 /* $NetBSD: inphy.c,v 1.44 2007/12/09 20:28:03 jmcneill 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 1.44 2007/12/09 20:28:03 jmcneill 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 static int inphymatch(struct device *, struct cfdata *, void *); 94 static 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 static int inphy_service(struct mii_softc *, struct mii_data *, int); 100 static void inphy_status(struct mii_softc *); 101 102 static const struct mii_phy_funcs inphy_funcs = { 103 inphy_service, inphy_status, mii_phy_reset, 104 }; 105 106 static const struct mii_phydesc inphys[] = { 107 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82555, 108 MII_STR_yyINTEL_I82555 }, 109 110 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562EH, 111 MII_STR_yyINTEL_I82562EH }, 112 113 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562EM, 114 MII_STR_yyINTEL_I82562EM }, 115 116 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562ET, 117 MII_STR_yyINTEL_I82562ET }, 118 119 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562G, 120 MII_STR_yyINTEL_I82562G }, 121 122 { 0, 0, 123 NULL }, 124 }; 125 126 static int 127 inphymatch(struct device *parent, struct cfdata *match, 128 void *aux) 129 { 130 struct mii_attach_args *ma = aux; 131 132 if (mii_phy_match(ma, inphys) != NULL) 133 return (10); 134 135 return (0); 136 } 137 138 static void 139 inphyattach(struct device *parent, struct device *self, void *aux) 140 { 141 struct mii_softc *sc = device_private(self); 142 struct mii_attach_args *ma = aux; 143 struct mii_data *mii = ma->mii_data; 144 const struct mii_phydesc *mpd; 145 146 mpd = mii_phy_match(ma, inphys); 147 aprint_naive(": Media interface\n"); 148 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 149 150 sc->mii_inst = mii->mii_instance; 151 sc->mii_phy = ma->mii_phyno; 152 sc->mii_funcs = &inphy_funcs; 153 sc->mii_pdata = mii; 154 sc->mii_flags = ma->mii_flags; 155 sc->mii_anegticks = MII_ANEGTICKS; 156 157 PHY_RESET(sc); 158 159 sc->mii_capabilities = 160 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 161 aprint_normal("%s: ", sc->mii_dev.dv_xname); 162 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 163 aprint_error("no media present"); 164 else 165 mii_phy_add_media(sc); 166 aprint_normal("\n"); 167 168 if (!pmf_device_register(self, NULL, mii_phy_resume)) 169 aprint_error_dev(self, "couldn't establish power handler\n"); 170 } 171 172 static int 173 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 174 { 175 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 176 int reg; 177 178 if (!device_is_active(&sc->mii_dev)) 179 return (ENXIO); 180 181 switch (cmd) { 182 case MII_POLLSTAT: 183 /* 184 * If we're not polling our PHY instance, just return. 185 */ 186 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 187 return (0); 188 break; 189 190 case MII_MEDIACHG: 191 /* 192 * If the media indicates a different PHY instance, 193 * isolate ourselves. 194 */ 195 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 196 reg = PHY_READ(sc, MII_BMCR); 197 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 198 return (0); 199 } 200 201 /* 202 * If the interface is not up, don't do anything. 203 */ 204 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 205 break; 206 207 mii_phy_setmedia(sc); 208 break; 209 210 case MII_TICK: 211 /* 212 * If we're not currently selected, just return. 213 */ 214 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 215 return (0); 216 217 if (mii_phy_tick(sc) == EJUSTRETURN) 218 return (0); 219 break; 220 221 case MII_DOWN: 222 mii_phy_down(sc); 223 return (0); 224 } 225 226 /* Update the media status. */ 227 mii_phy_status(sc); 228 229 /* Callback if something changed. */ 230 mii_phy_update(sc, cmd); 231 return (0); 232 } 233 234 static void 235 inphy_status(struct mii_softc *sc) 236 { 237 struct mii_data *mii = sc->mii_pdata; 238 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 239 int bmsr, bmcr, scr; 240 241 mii->mii_media_status = IFM_AVALID; 242 mii->mii_media_active = IFM_ETHER; 243 244 bmsr = PHY_READ(sc, MII_BMSR) | 245 PHY_READ(sc, MII_BMSR); 246 if (bmsr & BMSR_LINK) 247 mii->mii_media_status |= IFM_ACTIVE; 248 249 bmcr = PHY_READ(sc, MII_BMCR); 250 if (bmcr & BMCR_ISO) { 251 mii->mii_media_active |= IFM_NONE; 252 mii->mii_media_status = 0; 253 return; 254 } 255 256 if (bmcr & BMCR_LOOP) 257 mii->mii_media_active |= IFM_LOOP; 258 259 if (bmcr & BMCR_AUTOEN) { 260 if ((bmsr & BMSR_ACOMP) == 0) { 261 /* Erg, still trying, I guess... */ 262 mii->mii_media_active |= IFM_NONE; 263 return; 264 } 265 scr = PHY_READ(sc, MII_INPHY_SCR); 266 if ((bmsr & BMSR_100T4) && (scr & SCR_T4)) 267 mii->mii_media_active |= IFM_100_T4; 268 else if (scr & SCR_S100) 269 mii->mii_media_active |= IFM_100_TX; 270 else 271 mii->mii_media_active |= IFM_10_T; 272 if (scr & SCR_FDX) 273 mii->mii_media_active |= IFM_FDX; 274 } else 275 mii->mii_media_active = ife->ifm_media; 276 } 277
Indexes created Wed Sep 24 15:09:51 GMT 2025