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 * $FreeBSD: src/sys/dev/mii/ukphy.c,v 1.2.2.2 2002/11/08 21:53:49 semenu Exp $ 40 * $DragonFly: src/sys/dev/netif/mii_layer/ukphy.c,v 1.4 2003/08/27 09:38:31 rob Exp $ 41 */ 42 43 /* 44 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by Manuel Bouyer. 57 * 4. The name of the author may not be used to endorse or promote products 58 * derived from this software without specific prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 61 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 63 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 64 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 65 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 66 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 67 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 68 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 69 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 70 */ 71 72 /* 73 * driver for generic unknown PHYs 74 */ 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/kernel.h> 79 #include <sys/socket.h> 80 #include <sys/errno.h> 81 #include <sys/module.h> 82 #include <sys/bus.h> 83 84 #include <net/if.h> 85 #include <net/if_media.h> 86 87 #include <machine/clock.h> 88 89 #include "mii.h" 90 #include "miivar.h" 91 92 #include "miibus_if.h" 93 94 static int ukphy_probe (device_t); 95 static int ukphy_attach (device_t); 96 static int ukphy_detach (device_t); 97 98 static device_method_t ukphy_methods[] = { 99 /* device interface */ 100 DEVMETHOD(device_probe, ukphy_probe), 101 DEVMETHOD(device_attach, ukphy_attach), 102 DEVMETHOD(device_detach, ukphy_detach), 103 DEVMETHOD(device_shutdown, bus_generic_shutdown), 104 { 0, 0 } 105 }; 106 107 static devclass_t ukphy_devclass; 108 109 static driver_t ukphy_driver = { 110 "ukphy", 111 ukphy_methods, 112 sizeof(struct mii_softc) 113 }; 114 115 DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, 0, 0); 116 117 int ukphy_service (struct mii_softc *, struct mii_data *, int); 118 119 static int 120 ukphy_probe(dev) 121 device_t dev; 122 { 123 124 /* 125 * We know something is here, so always match at a low priority. 126 */ 127 device_set_desc(dev, "Generic IEEE 802.3u media interface"); 128 return (-100); 129 } 130 131 static int 132 ukphy_attach(dev) 133 device_t dev; 134 { 135 struct mii_softc *sc; 136 struct mii_attach_args *ma; 137 struct mii_data *mii; 138 139 sc = device_get_softc(dev); 140 ma = device_get_ivars(dev); 141 sc->mii_dev = device_get_parent(dev); 142 mii = device_get_softc(sc->mii_dev); 143 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 144 145 if (bootverbose) 146 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n", 147 MII_OUI(ma->mii_id1, ma->mii_id2), 148 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2)); 149 150 sc->mii_inst = mii->mii_instance; 151 sc->mii_phy = ma->mii_phyno; 152 sc->mii_service = ukphy_service; 153 sc->mii_pdata = mii; 154 155 mii->mii_instance++; 156 157 sc->mii_flags |= MIIF_NOISOLATE; 158 159 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 160 161 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 162 BMCR_ISO); 163 #if 0 164 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 165 BMCR_LOOP|BMCR_S100); 166 #endif 167 168 mii_phy_reset(sc); 169 170 sc->mii_capabilities = 171 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 172 device_printf(dev, " "); 173 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 174 printf("no media present"); 175 else 176 mii_add_media(mii, sc->mii_capabilities, 177 sc->mii_inst); 178 printf("\n"); 179 #undef ADD 180 181 MIIBUS_MEDIAINIT(sc->mii_dev); 182 183 return(0); 184 } 185 186 static int ukphy_detach(dev) 187 device_t dev; 188 { 189 struct mii_softc *sc; 190 struct mii_data *mii; 191 192 sc = device_get_softc(dev); 193 mii = device_get_softc(device_get_parent(dev)); 194 mii_phy_auto_stop(sc); 195 sc->mii_dev = NULL; 196 LIST_REMOVE(sc, mii_list); 197 198 return(0); 199 } 200 201 int 202 ukphy_service(sc, mii, cmd) 203 struct mii_softc *sc; 204 struct mii_data *mii; 205 int cmd; 206 { 207 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 208 int reg; 209 210 switch (cmd) { 211 case MII_POLLSTAT: 212 /* 213 * If we're not polling our PHY instance, just return. 214 */ 215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 216 return (0); 217 break; 218 219 case MII_MEDIACHG: 220 /* 221 * If the media indicates a different PHY instance, 222 * isolate ourselves. 223 */ 224 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 225 reg = PHY_READ(sc, MII_BMCR); 226 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 227 return (0); 228 } 229 230 /* 231 * If the interface is not up, don't do anything. 232 */ 233 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 234 break; 235 236 switch (IFM_SUBTYPE(ife->ifm_media)) { 237 case IFM_AUTO: 238 /* 239 * If we're already in auto mode, just return. 240 */ 241 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 242 return (0); 243 (void) mii_phy_auto(sc, 1); 244 break; 245 case IFM_100_T4: 246 /* 247 * XXX Not supported as a manual setting right now. 248 */ 249 return (EINVAL); 250 default: 251 /* 252 * BMCR data is stored in the ifmedia entry. 253 */ 254 PHY_WRITE(sc, MII_ANAR, 255 mii_anar(ife->ifm_media)); 256 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 257 } 258 break; 259 260 case MII_TICK: 261 /* 262 * If we're not currently selected, just return. 263 */ 264 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 265 return (0); 266 267 /* 268 * Only used for autonegotiation. 269 */ 270 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 271 return (0); 272 273 /* 274 * Is the interface even up? 275 */ 276 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 277 return (0); 278 279 /* 280 * Check to see if we have link. If we do, we don't 281 * need to restart the autonegotiation process. Read 282 * the BMSR twice in case it's latched. 283 */ 284 reg = PHY_READ(sc, MII_BMSR) | 285 PHY_READ(sc, MII_BMSR); 286 if (reg & BMSR_LINK) 287 return (0); 288 289 /* 290 * Only retry autonegotiation every 5 seconds. 291 */ 292 if (++sc->mii_ticks != 5) 293 return (0); 294 295 sc->mii_ticks = 0; 296 mii_phy_reset(sc); 297 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 298 return (0); 299 break; 300 } 301 302 /* Update the media status. */ 303 ukphy_status(sc); 304 305 /* Callback if something changed. */ 306 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 307 MIIBUS_STATCHG(sc->mii_dev); 308 sc->mii_active = mii->mii_media_active; 309 } 310 return (0); 311 } 312