xlphy.c revision 50120
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/malloc.h> 77#include <sys/socket.h> 78#include <sys/module.h> 79#include <sys/bus.h> 80 81#include <net/if.h> 82#include <net/if_media.h> 83 84#include <dev/mii/mii.h> 85#include <dev/mii/miivar.h> 86#include <dev/mii/miidevs.h> 87 88#include "miibus_if.h" 89 90#if !defined(lint) 91static const char rcsid[] = 92 "$Id$"; 93#endif 94 95static int exphy_probe __P((device_t)); 96static int exphy_attach __P((device_t)); 97static int exphy_detach __P((device_t)); 98 99static device_method_t exphy_methods[] = { 100 /* device interface */ 101 DEVMETHOD(device_probe, exphy_probe), 102 DEVMETHOD(device_attach, exphy_attach), 103 DEVMETHOD(device_detach, exphy_detach), 104 DEVMETHOD(device_shutdown, bus_generic_shutdown), 105 { 0, 0 } 106}; 107 108static devclass_t exphy_devclass; 109 110static driver_t exphy_driver = { 111 "xlphy", 112 exphy_methods, 113 sizeof(struct mii_softc) 114}; 115 116DRIVER_MODULE(xlphy, miibus, exphy_driver, exphy_devclass, 0, 0); 117 118int exphy_service __P((struct mii_softc *, struct mii_data *, int)); 119void exphy_reset __P((struct mii_softc *)); 120 121static int exphy_probe(dev) 122 device_t dev; 123{ 124 struct mii_attach_args *ma; 125 device_t parent; 126 127 ma = device_get_ivars(dev); 128 parent = device_get_parent(device_get_parent(dev)); 129 130 /* 131 * Argh, 3Com PHY reports oui == 0 model == 0! 132 */ 133 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || 134 MII_MODEL(ma->mii_id2) != 0) 135 return (ENXIO); 136 137 /* 138 * Make sure the parent is an `ex'. 139 */ 140 if (strcmp(device_get_name(parent), "xl") != 0) 141 return (ENXIO); 142 143 device_set_desc(dev, "3Com internal media interface"); 144 145 return (0); 146} 147 148static int exphy_attach(dev) 149 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 sc->mii_dev = device_get_parent(dev); 158 mii = device_get_softc(sc->mii_dev); 159 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 160 161 sc->mii_inst = mii->mii_instance; 162 sc->mii_phy = ma->mii_phyno; 163 sc->mii_service = exphy_service; 164 sc->mii_pdata = mii; 165 166 /* 167 * The 3Com PHY can never be isolated, so never allow non-zero 168 * instances! 169 */ 170 if (mii->mii_instance != 0) { 171 device_printf(dev, "ignoring this PHY, non-zero instance\n"); 172 return(ENXIO); 173 } 174 175 mii->mii_instance++; 176 177 sc->mii_flags |= MIIF_NOISOLATE; 178 179#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 180 181#if 0 /* See above. */ 182 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 183 BMCR_ISO); 184#endif 185 186 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 187 BMCR_LOOP|BMCR_S100); 188 189 exphy_reset(sc); 190 191 sc->mii_capabilities = 192 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 193 device_printf(dev, " "); 194 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 195 printf("no media present"); 196 else 197 mii_add_media(mii, sc->mii_capabilities, 198 sc->mii_inst); 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 sc->mii_dev = NULL; 214 LIST_REMOVE(sc, mii_list); 215 216 return(0); 217} 218 219int 220exphy_service(sc, mii, cmd) 221 struct mii_softc *sc; 222 struct mii_data *mii; 223 int cmd; 224{ 225 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 226 227 /* 228 * We can't isolate the 3Com PHY, so it has to be the only one! 229 */ 230 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 231 panic("exphy_service: can't isolate 3Com PHY"); 232 233 switch (cmd) { 234 case MII_POLLSTAT: 235 break; 236 237 case MII_MEDIACHG: 238 /* 239 * If the interface is not up, don't do anything. 240 */ 241 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 242 break; 243 244 switch (IFM_SUBTYPE(ife->ifm_media)) { 245 case IFM_AUTO: 246 /* 247 * If we're already in auto mode, just return. 248 */ 249 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 250 return (0); 251 (void) mii_phy_auto(sc, 1); 252 break; 253 case IFM_100_T4: 254 /* 255 * XXX Not supported as a manual setting right now. 256 */ 257 return (EINVAL); 258 default: 259 /* 260 * BMCR data is stored in the ifmedia entry. 261 */ 262 PHY_WRITE(sc, MII_ANAR, 263 mii_anar(ife->ifm_media)); 264 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 265 } 266 break; 267 268 case MII_TICK: 269 /* 270 * Only used for autonegotiation. 271 */ 272 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 273 return (0); 274 275 /* 276 * Is the interface even up? 277 */ 278 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 279 return (0); 280 281 /* 282 * The 3Com PHY's autonegotiation doesn't need to be 283 * kicked; it continues in the background. 284 */ 285 break; 286 } 287 288 /* Update the media status. */ 289 ukphy_status(sc); 290 291 /* Callback if something changed. */ 292 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 293 MIIBUS_STATCHG(sc->mii_dev); 294 sc->mii_active = mii->mii_media_active; 295 } 296 return (0); 297} 298 299void 300exphy_reset(sc) 301 struct mii_softc *sc; 302{ 303 304 mii_phy_reset(sc); 305 306 /* 307 * XXX 3Com PHY doesn't set the BMCR properly after 308 * XXX reset, which breaks autonegotiation. 309 */ 310 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 311} 312