xlphy.c revision 160076
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#include <sys/cdefs.h> 70__FBSDID("$FreeBSD: head/sys/dev/mii/exphy.c 160076 2006-07-03 02:53:40Z yongari $"); 71 72/* 73 * driver for 3Com internal PHYs 74 */ 75 76#include <sys/param.h> 77#include <sys/systm.h> 78#include <sys/kernel.h> 79#include <sys/socket.h> 80#include <sys/module.h> 81#include <sys/bus.h> 82 83#include <net/if.h> 84#include <net/if_media.h> 85 86#include <dev/mii/mii.h> 87#include <dev/mii/miivar.h> 88#include "miidevs.h" 89 90#include "miibus_if.h" 91 92static int exphy_probe(device_t); 93static int exphy_attach(device_t); 94 95static device_method_t exphy_methods[] = { 96 /* device interface */ 97 DEVMETHOD(device_probe, exphy_probe), 98 DEVMETHOD(device_attach, exphy_attach), 99 DEVMETHOD(device_detach, mii_phy_detach), 100 DEVMETHOD(device_shutdown, bus_generic_shutdown), 101 { 0, 0 } 102}; 103 104static devclass_t exphy_devclass; 105 106static driver_t exphy_driver = { 107 "xlphy", 108 exphy_methods, 109 sizeof(struct mii_softc) 110}; 111 112DRIVER_MODULE(xlphy, miibus, exphy_driver, exphy_devclass, 0, 0); 113 114static int exphy_service(struct mii_softc *, struct mii_data *, int); 115static void exphy_reset(struct mii_softc *); 116 117static int 118exphy_probe(device_t dev) 119{ 120 struct mii_attach_args *ma; 121 device_t parent; 122 123 ma = device_get_ivars(dev); 124 parent = device_get_parent(device_get_parent(dev)); 125 126 /* 127 * Argh, 3Com PHY reports oui == 0 model == 0! 128 */ 129 if ((MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || 130 MII_MODEL(ma->mii_id2) != 0) && 131 (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM || 132 MII_MODEL(ma->mii_id2) != MII_MODEL_BROADCOM_3C905C)) 133 return (ENXIO); 134 135 /* 136 * Make sure the parent is an `ex'. 137 */ 138 if (strcmp(device_get_name(parent), "xl") != 0) 139 return (ENXIO); 140 141 if (MII_OUI(ma->mii_id1, ma->mii_id2) == 0) 142 device_set_desc(dev, "3Com internal media interface"); 143 else 144 device_set_desc(dev, MII_STR_BROADCOM_3C905C); 145 146 return (BUS_PROBE_DEFAULT); 147} 148 149static int 150exphy_attach(device_t dev) 151{ 152 struct mii_softc *sc; 153 struct mii_attach_args *ma; 154 struct mii_data *mii; 155 156 sc = device_get_softc(dev); 157 ma = device_get_ivars(dev); 158 sc->mii_dev = device_get_parent(dev); 159 mii = device_get_softc(sc->mii_dev); 160 161 /* 162 * The 3Com PHY can never be isolated, so never allow non-zero 163 * instances! 164 */ 165 if (mii->mii_instance != 0) { 166 device_printf(dev, "ignoring this PHY, non-zero instance\n"); 167 return(ENXIO); 168 } 169 170 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 171 172 sc->mii_inst = mii->mii_instance; 173 sc->mii_phy = ma->mii_phyno; 174 sc->mii_service = exphy_service; 175 sc->mii_pdata = mii; 176 mii->mii_instance++; 177 178 sc->mii_flags |= MIIF_NOISOLATE; 179 180#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 181 182#if 0 /* See above. */ 183 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 184 BMCR_ISO); 185#endif 186 187 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 188 BMCR_LOOP|BMCR_S100); 189 190 exphy_reset(sc); 191 192 sc->mii_capabilities = 193 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 194 device_printf(dev, " "); 195 mii_phy_add_media(sc); 196 printf("\n"); 197#undef ADD 198 MIIBUS_MEDIAINIT(sc->mii_dev); 199 return(0); 200} 201 202static int 203exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 204{ 205 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 206 207 /* 208 * We can't isolate the 3Com PHY, so it has to be the only one! 209 */ 210 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 211 panic("exphy_service: can't isolate 3Com PHY"); 212 213 switch (cmd) { 214 case MII_POLLSTAT: 215 break; 216 217 case MII_MEDIACHG: 218 /* 219 * If the interface is not up, don't do anything. 220 */ 221 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 222 break; 223 224 mii_phy_setmedia(sc); 225 break; 226 227 case MII_TICK: 228 /* 229 * Is the interface even up? 230 */ 231 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 232 return (0); 233 234 /* 235 * Only used for autonegotiation. 236 */ 237 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 238 break; 239 240 /* 241 * The 3Com PHY's autonegotiation doesn't need to be 242 * kicked; it continues in the background. 243 */ 244 break; 245 } 246 247 /* Update the media status. */ 248 ukphy_status(sc); 249 250 /* Callback if something changed. */ 251 mii_phy_update(sc, cmd); 252 return (0); 253} 254 255static void 256exphy_reset(struct mii_softc *sc) 257{ 258 259 mii_phy_reset(sc); 260 261 /* 262 * XXX 3Com PHY doesn't set the BMCR properly after 263 * XXX reset, which breaks autonegotiation. 264 */ 265 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 266} 267