xlphy.c revision 50577
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: exphy.c,v 1.1 1999/08/21 17:40:41 wpaul Exp $"; 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 (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM || 136 MII_MODEL(ma->mii_id2) != MII_MODEL_BROADCOM_3c905Cphy)) 137 return (ENXIO); 138 139 /* 140 * Make sure the parent is an `ex'. 141 */ 142 if (strcmp(device_get_name(parent), "xl") != 0) 143 return (ENXIO); 144 145 if (MII_OUI(ma->mii_id1, ma->mii_id2) == 0) 146 device_set_desc(dev, "3Com internal media interface"); 147 else 148 device_set_desc(dev, MII_STR_BROADCOM_3c905Cphy); 149 150 return (0); 151} 152 153static int exphy_attach(dev) 154 device_t dev; 155{ 156 struct mii_softc *sc; 157 struct mii_attach_args *ma; 158 struct mii_data *mii; 159 160 sc = device_get_softc(dev); 161 ma = device_get_ivars(dev); 162 sc->mii_dev = device_get_parent(dev); 163 mii = device_get_softc(sc->mii_dev); 164 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 165 166 sc->mii_inst = mii->mii_instance; 167 sc->mii_phy = ma->mii_phyno; 168 sc->mii_service = exphy_service; 169 sc->mii_pdata = mii; 170 171 /* 172 * The 3Com PHY can never be isolated, so never allow non-zero 173 * instances! 174 */ 175 if (mii->mii_instance != 0) { 176 device_printf(dev, "ignoring this PHY, non-zero instance\n"); 177 return(ENXIO); 178 } 179 180 mii->mii_instance++; 181 182 sc->mii_flags |= MIIF_NOISOLATE; 183 184#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 185 186#if 0 /* See above. */ 187 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 188 BMCR_ISO); 189#endif 190 191 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 192 BMCR_LOOP|BMCR_S100); 193 194 exphy_reset(sc); 195 196 sc->mii_capabilities = 197 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 198 device_printf(dev, " "); 199 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 200 printf("no media present"); 201 else 202 mii_add_media(mii, sc->mii_capabilities, 203 sc->mii_inst); 204 printf("\n"); 205#undef ADD 206 MIIBUS_MEDIAINIT(sc->mii_dev); 207 return(0); 208} 209 210static int exphy_detach(dev) 211 device_t dev; 212{ 213 struct mii_softc *sc; 214 struct mii_data *mii; 215 216 sc = device_get_softc(dev); 217 mii = device_get_softc(device_get_parent(dev)); 218 sc->mii_dev = NULL; 219 LIST_REMOVE(sc, mii_list); 220 221 return(0); 222} 223 224int 225exphy_service(sc, mii, cmd) 226 struct mii_softc *sc; 227 struct mii_data *mii; 228 int cmd; 229{ 230 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 231 232 /* 233 * We can't isolate the 3Com PHY, so it has to be the only one! 234 */ 235 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 236 panic("exphy_service: can't isolate 3Com PHY"); 237 238 switch (cmd) { 239 case MII_POLLSTAT: 240 break; 241 242 case MII_MEDIACHG: 243 /* 244 * If the interface is not up, don't do anything. 245 */ 246 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 247 break; 248 249 switch (IFM_SUBTYPE(ife->ifm_media)) { 250 case IFM_AUTO: 251 /* 252 * If we're already in auto mode, just return. 253 */ 254 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 255 return (0); 256 (void) mii_phy_auto(sc, 1); 257 break; 258 case IFM_100_T4: 259 /* 260 * XXX Not supported as a manual setting right now. 261 */ 262 return (EINVAL); 263 default: 264 /* 265 * BMCR data is stored in the ifmedia entry. 266 */ 267 PHY_WRITE(sc, MII_ANAR, 268 mii_anar(ife->ifm_media)); 269 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 270 } 271 break; 272 273 case MII_TICK: 274 /* 275 * Only used for autonegotiation. 276 */ 277 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 278 return (0); 279 280 /* 281 * Is the interface even up? 282 */ 283 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 284 return (0); 285 286 /* 287 * The 3Com PHY's autonegotiation doesn't need to be 288 * kicked; it continues in the background. 289 */ 290 break; 291 } 292 293 /* Update the media status. */ 294 ukphy_status(sc); 295 296 /* Callback if something changed. */ 297 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 298 MIIBUS_STATCHG(sc->mii_dev); 299 sc->mii_active = mii->mii_media_active; 300 } 301 return (0); 302} 303 304void 305exphy_reset(sc) 306 struct mii_softc *sc; 307{ 308 309 mii_phy_reset(sc); 310 311 /* 312 * XXX 3Com PHY doesn't set the BMCR properly after 313 * XXX reset, which breaks autonegotiation. 314 */ 315 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 316} 317