1 /* $NetBSD: iophy.c,v 1.29 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 * Intel 82553 PHY driver 71 */ 72 73 #include <sys/cdefs.h> 74 __KERNEL_RCSID(0, "$NetBSD: iophy.c,v 1.29 2007/12/09 20:28:03 jmcneill Exp $"); 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/kernel.h> 79 #include <sys/device.h> 80 #include <sys/socket.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/iophyreg.h> 90 91 static int iophymatch(struct device *, struct cfdata *, void *); 92 static void iophyattach(struct device *, struct device *, void *); 93 94 CFATTACH_DECL(iophy, sizeof(struct mii_softc), 95 iophymatch, iophyattach, mii_phy_detach, mii_phy_activate); 96 97 static int iophy_service(struct mii_softc *, struct mii_data *, int); 98 static void iophy_status(struct mii_softc *); 99 100 static const struct mii_phy_funcs iophy_funcs = { 101 iophy_service, iophy_status, mii_phy_reset, 102 }; 103 104 static const struct mii_phydesc iophys[] = { 105 { MII_OUI_xxINTEL, MII_MODEL_xxINTEL_I82553, 106 MII_STR_xxINTEL_I82553 }, 107 108 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82553, 109 MII_STR_yyINTEL_I82553 }, 110 111 { 0, 0, 112 NULL }, 113 }; 114 115 static int 116 iophymatch(struct device *parent, struct cfdata *match, 117 void *aux) 118 { 119 struct mii_attach_args *ma = aux; 120 121 if (mii_phy_match(ma, iophys) != NULL) 122 return (10); 123 124 return (0); 125 } 126 127 static void 128 iophyattach(struct device *parent, struct device *self, void *aux) 129 { 130 struct mii_softc *sc = device_private(self); 131 struct mii_attach_args *ma = aux; 132 struct mii_data *mii = ma->mii_data; 133 const struct mii_phydesc *mpd; 134 135 mpd = mii_phy_match(ma, iophys); 136 aprint_naive(": Media interface\n"); 137 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 138 139 sc->mii_inst = mii->mii_instance; 140 sc->mii_phy = ma->mii_phyno; 141 sc->mii_funcs = &iophy_funcs; 142 sc->mii_pdata = mii; 143 sc->mii_flags = ma->mii_flags; 144 sc->mii_anegticks = MII_ANEGTICKS; 145 146 PHY_RESET(sc); 147 148 sc->mii_capabilities = 149 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 150 aprint_normal("%s: ", sc->mii_dev.dv_xname); 151 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 152 aprint_error("no media present"); 153 else 154 mii_phy_add_media(sc); 155 aprint_normal("\n"); 156 157 if (!pmf_device_register(self, NULL, mii_phy_resume)) 158 aprint_error_dev(self, "couldn't establish power handler\n"); 159 } 160 161 static int 162 iophy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 163 { 164 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 165 int reg; 166 167 if (!device_is_active(&sc->mii_dev)) 168 return (ENXIO); 169 170 switch (cmd) { 171 case MII_POLLSTAT: 172 /* 173 * If we're not polling our PHY instance, just return. 174 */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 176 return (0); 177 break; 178 179 case MII_MEDIACHG: 180 /* 181 * If the media indicates a different PHY instance, 182 * isolate ourselves. 183 */ 184 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 185 reg = PHY_READ(sc, MII_BMCR); 186 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 187 return (0); 188 } 189 190 /* 191 * If the interface is not up, don't do anything. 192 */ 193 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 194 break; 195 196 mii_phy_setmedia(sc); 197 break; 198 199 case MII_TICK: 200 /* 201 * If we're not currently selected, just return. 202 */ 203 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 204 return (0); 205 206 if (mii_phy_tick(sc) == EJUSTRETURN) 207 return (0); 208 break; 209 210 case MII_DOWN: 211 mii_phy_down(sc); 212 return (0); 213 } 214 215 /* Update the media status. */ 216 mii_phy_status(sc); 217 218 /* Callback if something changed. */ 219 mii_phy_update(sc, cmd); 220 return (0); 221 } 222 223 static void 224 iophy_status(struct mii_softc *sc) 225 { 226 struct mii_data *mii = sc->mii_pdata; 227 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 228 int bmsr, bmcr, ext0; 229 230 mii->mii_media_status = IFM_AVALID; 231 mii->mii_media_active = IFM_ETHER; 232 233 bmsr = PHY_READ(sc, MII_BMSR) | 234 PHY_READ(sc, MII_BMSR); 235 if (bmsr & BMSR_LINK) 236 mii->mii_media_status |= IFM_ACTIVE; 237 238 bmcr = PHY_READ(sc, MII_BMCR); 239 if (bmcr & BMCR_ISO) { 240 mii->mii_media_active |= IFM_NONE; 241 mii->mii_media_status = 0; 242 return; 243 } 244 245 if (bmcr & BMCR_LOOP) 246 mii->mii_media_active |= IFM_LOOP; 247 248 if (bmcr & BMCR_AUTOEN) { 249 if ((bmsr & BMSR_ACOMP) == 0) { 250 /* Erg, still trying, I guess... */ 251 mii->mii_media_active |= IFM_NONE; 252 return; 253 } 254 ext0 = PHY_READ(sc, MII_IOPHY_EXT0); 255 256 if (ext0 & EXT0_SPEED) 257 if (bmsr & BMSR_100T4) { 258 mii->mii_media_active |= IFM_100_T4; 259 return; 260 } else { 261 mii->mii_media_active |= IFM_100_TX; 262 } 263 else 264 mii->mii_media_active |= IFM_10_T; 265 266 if (ext0 & EXT0_DUPLEX) 267 mii->mii_media_active |= IFM_FDX; 268 } else 269 mii->mii_media_active = ife->ifm_media; 270 } 271