1 /* $NetBSD: ukphy.c,v 1.2 1999/04/23 04:24:32 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 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, and by Frank van der Linden. 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 generic unknown PHYs 71 */ 72 73 #include <sys/param.h> 74 #include <sys/systm.h> 75 #include <sys/kernel.h> 76 #include <sys/socket.h> 77 #include <sys/errno.h> 78 #include <sys/module.h> 79 #include <sys/bus.h> 80 81 #include <net/if.h> 82 #include <net/if_media.h> 83 84 #include <machine/clock.h> 85 86 #include <dev/mii/mii.h> 87 #include <dev/mii/miivar.h> 88 89 #include "miibus_if.h" 90 91 #if !defined(lint) 92 static const char rcsid[] = 93 "$FreeBSD$"; 94 #endif 95 96 static int ukphy_probe __P((device_t)); 97 static int ukphy_attach __P((device_t)); 98 static int ukphy_detach __P((device_t)); 99 100 static device_method_t ukphy_methods[] = { 101 /* device interface */ 102 DEVMETHOD(device_probe, ukphy_probe), 103 DEVMETHOD(device_attach, ukphy_attach), 104 DEVMETHOD(device_detach, ukphy_detach), 105 DEVMETHOD(device_shutdown, bus_generic_shutdown), 106 { 0, 0 } 107 }; 108 109 static devclass_t ukphy_devclass; 110 111 static driver_t ukphy_driver = { 112 "ukphy", 113 ukphy_methods, 114 sizeof(struct mii_softc) 115 }; 116 117 DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, 0, 0); 118 119 int ukphy_service __P((struct mii_softc *, struct mii_data *, int)); 120 121 static int 122 ukphy_probe(dev) 123 device_t dev; 124 { 125 126 /* 127 * We know something is here, so always match at a low priority. 128 */ 129 device_set_desc(dev, "Generic IEEE 802.3u media interface"); 130 return (-100); 131 } 132 133 static int 134 ukphy_attach(dev) 135 device_t dev; 136 { 137 struct mii_softc *sc; 138 struct mii_attach_args *ma; 139 struct mii_data *mii; 140 141 sc = device_get_softc(dev); 142 ma = device_get_ivars(dev); 143 sc->mii_dev = device_get_parent(dev); 144 mii = device_get_softc(sc->mii_dev); 145 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 146 147 if (bootverbose) 148 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n", 149 MII_OUI(ma->mii_id1, ma->mii_id2), 150 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2)); 151 152 sc->mii_inst = mii->mii_instance; 153 sc->mii_phy = ma->mii_phyno; 154 sc->mii_service = ukphy_service; 155 sc->mii_pdata = mii; 156 157 mii->mii_instance++; 158 159 sc->mii_flags |= MIIF_NOISOLATE; 160 161 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 162 163 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 164 BMCR_ISO); 165 #if 0 166 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 167 BMCR_LOOP|BMCR_S100); 168 #endif 169 170 mii_phy_reset(sc); 171 172 sc->mii_capabilities = 173 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 174 device_printf(dev, " "); 175 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 176 printf("no media present"); 177 else 178 mii_add_media(mii, sc->mii_capabilities, 179 sc->mii_inst); 180 printf("\n"); 181 #undef ADD 182 183 MIIBUS_MEDIAINIT(sc->mii_dev); 184 185 return(0); 186 } 187 188 static int ukphy_detach(dev) 189 device_t dev; 190 { 191 struct mii_softc *sc; 192 struct mii_data *mii; 193 194 sc = device_get_softc(dev); 195 mii = device_get_softc(device_get_parent(dev)); 196 sc->mii_dev = NULL; 197 LIST_REMOVE(sc, mii_list); 198 199 return(0); 200 } 201 202 int 203 ukphy_service(sc, mii, cmd) 204 struct mii_softc *sc; 205 struct mii_data *mii; 206 int cmd; 207 { 208 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 209 int reg; 210 211 switch (cmd) { 212 case MII_POLLSTAT: 213 /* 214 * If we're not polling our PHY instance, just return. 215 */ 216 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 217 return (0); 218 break; 219 220 case MII_MEDIACHG: 221 /* 222 * If the media indicates a different PHY instance, 223 * isolate ourselves. 224 */ 225 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 226 reg = PHY_READ(sc, MII_BMCR); 227 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 228 return (0); 229 } 230 231 /* 232 * If the interface is not up, don't do anything. 233 */ 234 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 235 break; 236 237 switch (IFM_SUBTYPE(ife->ifm_media)) { 238 case IFM_AUTO: 239 /* 240 * If we're already in auto mode, just return. 241 */ 242 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 243 return (0); 244 (void) mii_phy_auto(sc, 1); 245 break; 246 case IFM_100_T4: 247 /* 248 * XXX Not supported as a manual setting right now. 249 */ 250 return (EINVAL); 251 default: 252 /* 253 * BMCR data is stored in the ifmedia entry. 254 */ 255 PHY_WRITE(sc, MII_ANAR, 256 mii_anar(ife->ifm_media)); 257 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 258 } 259 break; 260 261 case MII_TICK: 262 /* 263 * If we're not currently selected, just return. 264 */ 265 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 266 return (0); 267 268 /* 269 * Only used for autonegotiation. 270 */ 271 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 272 return (0); 273 274 /* 275 * Is the interface even up? 276 */ 277 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 278 return (0); 279 280 /* 281 * Check to see if we have link. If we do, we don't 282 * need to restart the autonegotiation process. Read 283 * the BMSR twice in case it's latched. 284 */ 285 reg = PHY_READ(sc, MII_BMSR) | 286 PHY_READ(sc, MII_BMSR); 287 if (reg & BMSR_LINK) 288 return (0); 289 290 /* 291 * Only retry autonegotiation every 5 seconds. 292 */ 293 if (++sc->mii_ticks != 5) 294 return (0); 295 296 sc->mii_ticks = 0; 297 mii_phy_reset(sc); 298 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 299 return (0); 300 break; 301 } 302 303 /* Update the media status. */ 304 ukphy_status(sc); 305 306 /* Callback if something changed. */ 307 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 308 MIIBUS_STATCHG(sc->mii_dev); 309 sc->mii_active = mii->mii_media_active; 310 } 311 return (0); 312 } 313