xlphy.c revision 95667
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 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 3Com internal 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/module.h> 78#include <sys/bus.h> 79 80#include <net/if.h> 81#include <net/if_media.h> 82 83#include <dev/mii/mii.h> 84#include <dev/mii/miivar.h> 85#include <dev/mii/miidevs.h> 86 87#include "miibus_if.h" 88 89#if !defined(lint) 90static const char rcsid[] = 91 "$FreeBSD: head/sys/dev/mii/exphy.c 95667 2002-04-28 19:25:07Z phk $"; 92#endif 93 94static int exphy_probe (device_t); 95static int exphy_attach (device_t); 96static int exphy_detach (device_t); 97 98static device_method_t exphy_methods[] = { 99 /* device interface */ 100 DEVMETHOD(device_probe, exphy_probe), 101 DEVMETHOD(device_attach, exphy_attach), 102 DEVMETHOD(device_detach, exphy_detach), 103 DEVMETHOD(device_shutdown, bus_generic_shutdown), 104 { 0, 0 } 105}; 106 107static devclass_t exphy_devclass; 108 109static driver_t exphy_driver = { 110 "xlphy", 111 exphy_methods, 112 sizeof(struct mii_softc) 113}; 114 115DRIVER_MODULE(xlphy, miibus, exphy_driver, exphy_devclass, 0, 0); 116 117static int exphy_service(struct mii_softc *, struct mii_data *, int); 118static void exphy_reset(struct mii_softc *); 119 120static int exphy_probe(dev) 121 device_t dev; 122{ 123 struct mii_attach_args *ma; 124 device_t parent; 125 126 ma = device_get_ivars(dev); 127 parent = device_get_parent(device_get_parent(dev)); 128 129 /* 130 * Argh, 3Com PHY reports oui == 0 model == 0! 131 */ 132 if ((MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || 133 MII_MODEL(ma->mii_id2) != 0) && 134 (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM || 135 MII_MODEL(ma->mii_id2) != MII_MODEL_BROADCOM_3c905Cphy)) 136 return (ENXIO); 137 138 /* 139 * Make sure the parent is an `ex'. 140 */ 141 if (strcmp(device_get_name(parent), "xl") != 0) 142 return (ENXIO); 143 144 if (MII_OUI(ma->mii_id1, ma->mii_id2) == 0) 145 device_set_desc(dev, "3Com internal media interface"); 146 else 147 device_set_desc(dev, MII_STR_BROADCOM_3c905Cphy); 148 149 return (0); 150} 151 152static int exphy_attach(dev) 153 device_t dev; 154{ 155 struct mii_softc *sc; 156 struct mii_attach_args *ma; 157 struct mii_data *mii; 158 159 sc = device_get_softc(dev); 160 ma = device_get_ivars(dev); 161 sc->mii_dev = device_get_parent(dev); 162 mii = device_get_softc(sc->mii_dev); 163 164 /* 165 * The 3Com PHY can never be isolated, so never allow non-zero 166 * instances! 167 */ 168 if (mii->mii_instance != 0) { 169 device_printf(dev, "ignoring this PHY, non-zero instance\n"); 170 return(ENXIO); 171 } 172 173 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 174 175 sc->mii_inst = mii->mii_instance; 176 sc->mii_phy = ma->mii_phyno; 177 sc->mii_service = exphy_service; 178 sc->mii_pdata = mii; 179 mii->mii_instance++; 180 181 sc->mii_flags |= MIIF_NOISOLATE; 182 183#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 184 185#if 0 /* See above. */ 186 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 187 BMCR_ISO); 188#endif 189 190 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 191 BMCR_LOOP|BMCR_S100); 192 193 exphy_reset(sc); 194 195 sc->mii_capabilities = 196 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 197 device_printf(dev, " "); 198 mii_add_media(sc); 199 printf("\n"); 200#undef ADD 201 MIIBUS_MEDIAINIT(sc->mii_dev); 202 return(0); 203} 204 205static int exphy_detach(dev) 206 device_t dev; 207{ 208 struct mii_softc *sc; 209 struct mii_data *mii; 210 211 sc = device_get_softc(dev); 212 mii = device_get_softc(device_get_parent(dev)); 213 mii_phy_auto_stop(sc); 214 sc->mii_dev = NULL; 215 LIST_REMOVE(sc, mii_list); 216 217 return(0); 218} 219 220static int 221exphy_service(sc, mii, cmd) 222 struct mii_softc *sc; 223 struct mii_data *mii; 224 int cmd; 225{ 226 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 227 228 /* 229 * We can't isolate the 3Com PHY, so it has to be the only one! 230 */ 231 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 232 panic("exphy_service: can't isolate 3Com PHY"); 233 234 switch (cmd) { 235 case MII_POLLSTAT: 236 break; 237 238 case MII_MEDIACHG: 239 /* 240 * If the interface is not up, don't do anything. 241 */ 242 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 243 break; 244 245 switch (IFM_SUBTYPE(ife->ifm_media)) { 246 case IFM_AUTO: 247 /* 248 * If we're already in auto mode, just return. 249 */ 250 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 251 return (0); 252 (void) mii_phy_auto(sc, 1); 253 break; 254 case IFM_100_T4: 255 /* 256 * XXX Not supported as a manual setting right now. 257 */ 258 return (EINVAL); 259 default: 260 /* 261 * BMCR data is stored in the ifmedia entry. 262 */ 263 PHY_WRITE(sc, MII_ANAR, 264 mii_anar(ife->ifm_media)); 265 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 266 } 267 break; 268 269 case MII_TICK: 270 /* 271 * Is the interface even up? 272 */ 273 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 274 return (0); 275 276 /* 277 * Only used for autonegotiation. 278 */ 279 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 280 break; 281 282 /* 283 * The 3Com PHY's autonegotiation doesn't need to be 284 * kicked; it continues in the background. 285 */ 286 break; 287 } 288 289 /* Update the media status. */ 290 ukphy_status(sc); 291 292 /* Callback if something changed. */ 293 mii_phy_update(sc, cmd); 294 return (0); 295} 296 297static void 298exphy_reset(sc) 299 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