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 1.8 2005/12/11 01:54:08 swildner 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 (device_t); 93 static int exphy_attach (device_t); 94 static int exphy_detach (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 (struct mii_softc *, struct mii_data *, int); 116 void exphy_reset (struct mii_softc *); 117 118 static int 119 exphy_probe(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 151 exphy_attach(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 mii_softc_init(sc, ma); 160 sc->mii_dev = device_get_parent(dev); 161 mii = device_get_softc(sc->mii_dev); 162 163 /* 164 * The 3Com PHY can never be isolated, so never allow non-zero 165 * instances! 166 */ 167 if (mii->mii_instance != 0) { 168 device_printf(dev, "ignoring this PHY, non-zero instance\n"); 169 return(ENXIO); 170 } 171 172 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 173 174 sc->mii_inst = mii->mii_instance; 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(sc, sc->mii_capabilities); 200 printf("\n"); 201 #undef ADD 202 MIIBUS_MEDIAINIT(sc->mii_dev); 203 return(0); 204 } 205 206 static int 207 exphy_detach(device_t dev) 208 { 209 struct mii_softc *sc; 210 struct mii_data *mii; 211 212 sc = device_get_softc(dev); 213 mii = device_get_softc(device_get_parent(dev)); 214 mii_phy_auto_stop(sc); 215 sc->mii_dev = NULL; 216 LIST_REMOVE(sc, mii_list); 217 218 return(0); 219 } 220 221 int 222 exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 223 { 224 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 225 226 /* 227 * We can't isolate the 3Com PHY, so it has to be the only one! 228 */ 229 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 230 panic("exphy_service: can't isolate 3Com PHY"); 231 232 switch (cmd) { 233 case MII_POLLSTAT: 234 break; 235 236 case MII_MEDIACHG: 237 /* 238 * If the interface is not up, don't do anything. 239 */ 240 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 241 break; 242 243 switch (IFM_SUBTYPE(ife->ifm_media)) { 244 case IFM_AUTO: 245 /* 246 * If we're already in auto mode, just return. 247 */ 248 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 249 return (0); 250 (void) mii_phy_auto(sc, 1); 251 break; 252 case IFM_100_T4: 253 /* 254 * XXX Not supported as a manual setting right now. 255 */ 256 return (EINVAL); 257 default: 258 /* 259 * BMCR data is stored in the ifmedia entry. 260 */ 261 PHY_WRITE(sc, MII_ANAR, 262 mii_anar(ife->ifm_media)); 263 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 264 } 265 break; 266 267 case MII_TICK: 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 * The 3Com PHY's autonegotiation doesn't need to be 282 * kicked; it continues in the background. 283 */ 284 break; 285 } 286 287 /* Update the media status. */ 288 ukphy_status(sc); 289 290 /* Callback if something changed. */ 291 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 292 MIIBUS_STATCHG(sc->mii_dev); 293 sc->mii_active = mii->mii_media_active; 294 } 295 return (0); 296 } 297 298 void 299 exphy_reset(struct mii_softc *sc) 300 { 301 302 mii_phy_reset(sc); 303 304 /* 305 * XXX 3Com PHY doesn't set the BMCR properly after 306 * XXX reset, which breaks autonegotiation. 307 */ 308 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 309 } 310