xlphy.c revision 119418
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#include <sys/cdefs.h> 41__FBSDID("$FreeBSD: head/sys/dev/mii/exphy.c 119418 2003-08-24 17:55:58Z obrien $"); 42 43/* 44 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by Manuel Bouyer. 57 * 4. The name of the author may not be used to endorse or promote products 58 * derived from this software without specific prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 61 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 63 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 64 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 65 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 66 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 67 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 68 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 69 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 70 */ 71 72/* 73 * driver for 3Com internal PHYs 74 */ 75 76#include <sys/cdefs.h> 77__FBSDID("$FreeBSD: head/sys/dev/mii/exphy.c 119418 2003-08-24 17:55:58Z obrien $"); 78 79#include <sys/param.h> 80#include <sys/systm.h> 81#include <sys/kernel.h> 82#include <sys/socket.h> 83#include <sys/module.h> 84#include <sys/bus.h> 85 86#include <net/if.h> 87#include <net/if_media.h> 88 89#include <dev/mii/mii.h> 90#include <dev/mii/miivar.h> 91#include "miidevs.h" 92 93#include "miibus_if.h" 94 95static int exphy_probe(device_t); 96static int exphy_attach(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, mii_phy_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 121exphy_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_3C905C)) 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_3C905C); 149 150 return (0); 151} 152 153static int 154exphy_attach(dev) 155 device_t dev; 156{ 157 struct mii_softc *sc; 158 struct mii_attach_args *ma; 159 struct mii_data *mii; 160 161 sc = device_get_softc(dev); 162 ma = device_get_ivars(dev); 163 sc->mii_dev = device_get_parent(dev); 164 mii = device_get_softc(sc->mii_dev); 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 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 176 177 sc->mii_inst = mii->mii_instance; 178 sc->mii_phy = ma->mii_phyno; 179 sc->mii_service = exphy_service; 180 sc->mii_pdata = mii; 181 mii->mii_instance++; 182 183 sc->mii_flags |= MIIF_NOISOLATE; 184 185#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 186 187#if 0 /* See above. */ 188 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 189 BMCR_ISO); 190#endif 191 192 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 193 BMCR_LOOP|BMCR_S100); 194 195 exphy_reset(sc); 196 197 sc->mii_capabilities = 198 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 199 device_printf(dev, " "); 200 mii_phy_add_media(sc); 201 printf("\n"); 202#undef ADD 203 MIIBUS_MEDIAINIT(sc->mii_dev); 204 return(0); 205} 206 207static int 208exphy_service(sc, mii, cmd) 209 struct mii_softc *sc; 210 struct mii_data *mii; 211 int cmd; 212{ 213 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 214 215 /* 216 * We can't isolate the 3Com PHY, so it has to be the only one! 217 */ 218 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 219 panic("exphy_service: can't isolate 3Com PHY"); 220 221 switch (cmd) { 222 case MII_POLLSTAT: 223 break; 224 225 case MII_MEDIACHG: 226 /* 227 * If the interface is not up, don't do anything. 228 */ 229 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 230 break; 231 232 mii_phy_setmedia(sc); 233 break; 234 235 case MII_TICK: 236 /* 237 * Is the interface even up? 238 */ 239 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 240 return (0); 241 242 /* 243 * Only used for autonegotiation. 244 */ 245 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 246 break; 247 248 /* 249 * The 3Com PHY's autonegotiation doesn't need to be 250 * kicked; it continues in the background. 251 */ 252 break; 253 } 254 255 /* Update the media status. */ 256 ukphy_status(sc); 257 258 /* Callback if something changed. */ 259 mii_phy_update(sc, cmd); 260 return (0); 261} 262 263static void 264exphy_reset(struct mii_softc *sc) 265{ 266 267 mii_phy_reset(sc); 268 269 /* 270 * XXX 3Com PHY doesn't set the BMCR properly after 271 * XXX reset, which breaks autonegotiation. 272 */ 273 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 274} 275