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 */ 41 42 /* 43 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by Manuel Bouyer. 56 * 4. The name of the author may not be used to endorse or promote products 57 * derived from this software without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 60 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 61 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 62 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 63 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 64 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 65 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 66 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 67 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 68 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 69 */ 70 71 /* 72 * driver for 3Com internal PHYs 73 */ 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/socket.h> 79 #include <sys/module.h> 80 #include <sys/bus.h> 81 82 #include <net/if.h> 83 #include <net/if_media.h> 84 85 #include "mii.h" 86 #include "miivar.h" 87 #include "miidevs.h" 88 89 #include "miibus_if.h" 90 91 static int exphy_probe (device_t); 92 static int exphy_attach (device_t); 93 94 static device_method_t exphy_methods[] = { 95 /* device interface */ 96 DEVMETHOD(device_probe, exphy_probe), 97 DEVMETHOD(device_attach, exphy_attach), 98 DEVMETHOD(device_detach, ukphy_detach), 99 DEVMETHOD(device_shutdown, bus_generic_shutdown), 100 DEVMETHOD_END 101 }; 102 103 static devclass_t exphy_devclass; 104 105 static driver_t exphy_driver = { 106 "xlphy", 107 exphy_methods, 108 sizeof(struct mii_softc) 109 }; 110 111 DRIVER_MODULE(xlphy, miibus, exphy_driver, exphy_devclass, NULL, NULL); 112 113 int exphy_service (struct mii_softc *, struct mii_data *, int); 114 void exphy_reset (struct mii_softc *); 115 116 static int 117 exphy_probe(device_t dev) 118 { 119 struct mii_attach_args *ma; 120 device_t parent; 121 122 ma = device_get_ivars(dev); 123 parent = device_get_parent(device_get_parent(dev)); 124 125 /* 126 * Argh, 3Com PHY reports oui == 0 model == 0! 127 */ 128 if ((MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || 129 MII_MODEL(ma->mii_id2) != 0) && 130 (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM || 131 MII_MODEL(ma->mii_id2) != MII_MODEL_BROADCOM_3C905C)) 132 return (ENXIO); 133 134 /* 135 * Make sure the parent is an `xl'. 136 */ 137 if (strcmp(device_get_name(parent), "xl") != 0) 138 return (ENXIO); 139 140 if (MII_OUI(ma->mii_id1, ma->mii_id2) == 0) 141 device_set_desc(dev, "3Com internal media interface"); 142 else 143 device_set_desc(dev, MII_STR_BROADCOM_3C905C); 144 145 return (0); 146 } 147 148 static int 149 exphy_attach(device_t dev) 150 { 151 struct mii_softc *sc; 152 struct mii_attach_args *ma; 153 struct mii_data *mii; 154 155 sc = device_get_softc(dev); 156 ma = device_get_ivars(dev); 157 mii_softc_init(sc, ma); 158 sc->mii_dev = device_get_parent(dev); 159 mii = device_get_softc(sc->mii_dev); 160 161 /* 162 * The 3Com PHY can never be isolated, so never allow non-zero 163 * instances! 164 */ 165 if (mii->mii_instance != 0) { 166 device_printf(dev, "ignoring this PHY, non-zero instance\n"); 167 return(ENXIO); 168 } 169 170 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 171 172 sc->mii_inst = mii->mii_instance; 173 sc->mii_service = exphy_service; 174 sc->mii_reset = exphy_reset; 175 sc->mii_pdata = mii; 176 mii->mii_instance++; 177 178 sc->mii_flags |= MIIF_NOISOLATE; 179 180 exphy_reset(sc); 181 182 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 183 device_printf(dev, " "); 184 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 185 kprintf("no media present"); 186 else 187 mii_phy_add_media(sc); 188 kprintf("\n"); 189 190 MIIBUS_MEDIAINIT(sc->mii_dev); 191 return(0); 192 } 193 194 int 195 exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 196 { 197 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 198 199 /* 200 * We can't isolate the 3Com PHY, so it has to be the only one! 201 */ 202 KASSERT(IFM_INST(ife->ifm_media) == sc->mii_inst, 203 ("exphy_service: can't isolate 3Com PHY")); 204 205 switch (cmd) { 206 case MII_POLLSTAT: 207 break; 208 209 case MII_MEDIACHG: 210 /* 211 * If the interface is not up, don't do anything. 212 */ 213 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 214 break; 215 216 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_T4) { 217 /* 218 * XXX Not supported as a manual setting right now. 219 */ 220 return (EINVAL); 221 } 222 223 mii_phy_set_media(sc); 224 break; 225 226 case MII_TICK: 227 /* 228 * Is the interface even up? 229 */ 230 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 231 return (0); 232 233 /* 234 * Only used for autonegotiation. 235 */ 236 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 237 break; 238 239 /* 240 * The 3Com PHY's autonegotiation doesn't need to be 241 * kicked; it continues in the background. 242 */ 243 break; 244 } 245 246 /* Update the media status. */ 247 ukphy_status(sc); 248 249 /* Callback if something changed. */ 250 mii_phy_update(sc, cmd); 251 return (0); 252 } 253 254 void 255 exphy_reset(struct mii_softc *sc) 256 { 257 258 mii_phy_reset(sc); 259 260 /* 261 * XXX 3Com PHY doesn't set the BMCR properly after 262 * XXX reset, which breaks autonegotiation. 263 */ 264 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 265 } 266