1 /* $NetBSD: exphy.c,v 1.16 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/exphy.c,v 1.4.2.2 2002/11/08 21:53:49 semenu Exp $ 40 * $DragonFly: src/sys/dev/netif/mii_layer/exphy.c,v 1.3 2003/08/07 21:17:03 dillon 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 3Com internal 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/module.h> 81 #include <sys/bus.h> 82 83 #include <net/if.h> 84 #include <net/if_media.h> 85 86 #include "mii.h" 87 #include "miivar.h" 88 #include "miidevs.h" 89 90 #include "miibus_if.h" 91 92 static int exphy_probe __P((device_t)); 93 static int exphy_attach __P((device_t)); 94 static int exphy_detach __P((device_t)); 95 96 static device_method_t exphy_methods[] = { 97 /* device interface */ 98 DEVMETHOD(device_probe, exphy_probe), 99 DEVMETHOD(device_attach, exphy_attach), 100 DEVMETHOD(device_detach, exphy_detach), 101 DEVMETHOD(device_shutdown, bus_generic_shutdown), 102 { 0, 0 } 103 }; 104 105 static devclass_t exphy_devclass; 106 107 static driver_t exphy_driver = { 108 "xlphy", 109 exphy_methods, 110 sizeof(struct mii_softc) 111 }; 112 113 DRIVER_MODULE(xlphy, miibus, exphy_driver, exphy_devclass, 0, 0); 114 115 int exphy_service __P((struct mii_softc *, struct mii_data *, int)); 116 void exphy_reset __P((struct mii_softc *)); 117 118 static int exphy_probe(dev) 119 device_t dev; 120 { 121 struct mii_attach_args *ma; 122 device_t parent; 123 124 ma = device_get_ivars(dev); 125 parent = device_get_parent(device_get_parent(dev)); 126 127 /* 128 * Argh, 3Com PHY reports oui == 0 model == 0! 129 */ 130 if ((MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || 131 MII_MODEL(ma->mii_id2) != 0) && 132 (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM || 133 MII_MODEL(ma->mii_id2) != MII_MODEL_BROADCOM_3c905Cphy)) 134 return (ENXIO); 135 136 /* 137 * Make sure the parent is an `ex'. 138 */ 139 if (strcmp(device_get_name(parent), "xl") != 0) 140 return (ENXIO); 141 142 if (MII_OUI(ma->mii_id1, ma->mii_id2) == 0) 143 device_set_desc(dev, "3Com internal media interface"); 144 else 145 device_set_desc(dev, MII_STR_BROADCOM_3c905Cphy); 146 147 return (0); 148 } 149 150 static int exphy_attach(dev) 151 device_t dev; 152 { 153 struct mii_softc *sc; 154 struct mii_attach_args *ma; 155 struct mii_data *mii; 156 157 sc = device_get_softc(dev); 158 ma = device_get_ivars(dev); 159 sc->mii_dev = device_get_parent(dev); 160 mii = device_get_softc(sc->mii_dev); 161 162 /* 163 * The 3Com PHY can never be isolated, so never allow non-zero 164 * instances! 165 */ 166 if (mii->mii_instance != 0) { 167 device_printf(dev, "ignoring this PHY, non-zero instance\n"); 168 return(ENXIO); 169 } 170 171 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 172 173 sc->mii_inst = mii->mii_instance; 174 sc->mii_phy = ma->mii_phyno; 175 sc->mii_service = exphy_service; 176 sc->mii_pdata = mii; 177 mii->mii_instance++; 178 179 sc->mii_flags |= MIIF_NOISOLATE; 180 181 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 182 183 #if 0 /* See above. */ 184 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 185 BMCR_ISO); 186 #endif 187 188 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 189 BMCR_LOOP|BMCR_S100); 190 191 exphy_reset(sc); 192 193 sc->mii_capabilities = 194 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 195 device_printf(dev, " "); 196 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 197 printf("no media present"); 198 else 199 mii_add_media(mii, sc->mii_capabilities, 200 sc->mii_inst); 201 printf("\n"); 202 #undef ADD 203 MIIBUS_MEDIAINIT(sc->mii_dev); 204 return(0); 205 } 206 207 static int exphy_detach(dev) 208 device_t dev; 209 { 210 struct mii_softc *sc; 211 struct mii_data *mii; 212 213 sc = device_get_softc(dev); 214 mii = device_get_softc(device_get_parent(dev)); 215 mii_phy_auto_stop(sc); 216 sc->mii_dev = NULL; 217 LIST_REMOVE(sc, mii_list); 218 219 return(0); 220 } 221 222 int 223 exphy_service(sc, mii, cmd) 224 struct mii_softc *sc; 225 struct mii_data *mii; 226 int cmd; 227 { 228 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 229 230 /* 231 * We can't isolate the 3Com PHY, so it has to be the only one! 232 */ 233 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 234 panic("exphy_service: can't isolate 3Com PHY"); 235 236 switch (cmd) { 237 case MII_POLLSTAT: 238 break; 239 240 case MII_MEDIACHG: 241 /* 242 * If the interface is not up, don't do anything. 243 */ 244 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 245 break; 246 247 switch (IFM_SUBTYPE(ife->ifm_media)) { 248 case IFM_AUTO: 249 /* 250 * If we're already in auto mode, just return. 251 */ 252 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 253 return (0); 254 (void) mii_phy_auto(sc, 1); 255 break; 256 case IFM_100_T4: 257 /* 258 * XXX Not supported as a manual setting right now. 259 */ 260 return (EINVAL); 261 default: 262 /* 263 * BMCR data is stored in the ifmedia entry. 264 */ 265 PHY_WRITE(sc, MII_ANAR, 266 mii_anar(ife->ifm_media)); 267 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 268 } 269 break; 270 271 case MII_TICK: 272 /* 273 * Only used for autonegotiation. 274 */ 275 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 276 return (0); 277 278 /* 279 * Is the interface even up? 280 */ 281 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 282 return (0); 283 284 /* 285 * The 3Com PHY's autonegotiation doesn't need to be 286 * kicked; it continues in the background. 287 */ 288 break; 289 } 290 291 /* Update the media status. */ 292 ukphy_status(sc); 293 294 /* Callback if something changed. */ 295 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 296 MIIBUS_STATCHG(sc->mii_dev); 297 sc->mii_active = mii->mii_media_active; 298 } 299 return (0); 300 } 301 302 void 303 exphy_reset(sc) 304 struct mii_softc *sc; 305 { 306 307 mii_phy_reset(sc); 308 309 /* 310 * XXX 3Com PHY doesn't set the BMCR properly after 311 * XXX reset, which breaks autonegotiation. 312 */ 313 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 314 } 315