xlphy.c revision 95723
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 95723 2002-04-29 13:35:31Z phk $"; 92#endif 93 94static int exphy_probe (device_t); 95static int exphy_attach (device_t); 96 97static device_method_t exphy_methods[] = { 98 /* device interface */ 99 DEVMETHOD(device_probe, exphy_probe), 100 DEVMETHOD(device_attach, exphy_attach), 101 DEVMETHOD(device_detach, mii_phy_detach), 102 DEVMETHOD(device_shutdown, bus_generic_shutdown), 103 { 0, 0 } 104}; 105 106static devclass_t exphy_devclass; 107 108static driver_t exphy_driver = { 109 "xlphy", 110 exphy_methods, 111 sizeof(struct mii_softc) 112}; 113 114DRIVER_MODULE(xlphy, miibus, exphy_driver, exphy_devclass, 0, 0); 115 116static int exphy_service(struct mii_softc *, struct mii_data *, int); 117static void exphy_reset(struct mii_softc *); 118 119static int exphy_probe(dev) 120 device_t dev; 121{ 122 struct mii_attach_args *ma; 123 device_t parent; 124 125 ma = device_get_ivars(dev); 126 parent = device_get_parent(device_get_parent(dev)); 127 128 /* 129 * Argh, 3Com PHY reports oui == 0 model == 0! 130 */ 131 if ((MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || 132 MII_MODEL(ma->mii_id2) != 0) && 133 (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM || 134 MII_MODEL(ma->mii_id2) != MII_MODEL_BROADCOM_3c905Cphy)) 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 if (MII_OUI(ma->mii_id1, ma->mii_id2) == 0) 144 device_set_desc(dev, "3Com internal media interface"); 145 else 146 device_set_desc(dev, MII_STR_BROADCOM_3c905Cphy); 147 148 return (0); 149} 150 151static int exphy_attach(dev) 152 device_t dev; 153{ 154 struct mii_softc *sc; 155 struct mii_attach_args *ma; 156 struct mii_data *mii; 157 158 sc = device_get_softc(dev); 159 ma = device_get_ivars(dev); 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_phy = ma->mii_phyno; 176 sc->mii_service = exphy_service; 177 sc->mii_pdata = mii; 178 mii->mii_instance++; 179 180 sc->mii_flags |= MIIF_NOISOLATE; 181 182#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 183 184#if 0 /* See above. */ 185 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 186 BMCR_ISO); 187#endif 188 189 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 190 BMCR_LOOP|BMCR_S100); 191 192 exphy_reset(sc); 193 194 sc->mii_capabilities = 195 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 196 device_printf(dev, " "); 197 mii_phy_add_media(sc); 198 printf("\n"); 199#undef ADD 200 MIIBUS_MEDIAINIT(sc->mii_dev); 201 return(0); 202} 203 204static int 205exphy_service(sc, mii, cmd) 206 struct mii_softc *sc; 207 struct mii_data *mii; 208 int cmd; 209{ 210 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 211 212 /* 213 * We can't isolate the 3Com PHY, so it has to be the only one! 214 */ 215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 216 panic("exphy_service: can't isolate 3Com PHY"); 217 218 switch (cmd) { 219 case MII_POLLSTAT: 220 break; 221 222 case MII_MEDIACHG: 223 /* 224 * If the interface is not up, don't do anything. 225 */ 226 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 227 break; 228 229 mii_phy_setmedia(sc); 230 break; 231 232 case MII_TICK: 233 /* 234 * Is the interface even up? 235 */ 236 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 237 return (0); 238 239 /* 240 * Only used for autonegotiation. 241 */ 242 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 243 break; 244 245 /* 246 * The 3Com PHY's autonegotiation doesn't need to be 247 * kicked; it continues in the background. 248 */ 249 break; 250 } 251 252 /* Update the media status. */ 253 ukphy_status(sc); 254 255 /* Callback if something changed. */ 256 mii_phy_update(sc, cmd); 257 return (0); 258} 259 260static void 261exphy_reset(struct mii_softc *sc) 262{ 263 264 mii_phy_reset(sc); 265 266 /* 267 * XXX 3Com PHY doesn't set the BMCR properly after 268 * XXX reset, which breaks autonegotiation. 269 */ 270 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 271} 272