bmtphy.c revision 119917
1/* 2 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 7 * NASA Ames Research Center. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. Neither the name of The NetBSD Foundation nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38#include <sys/cdefs.h> 39__FBSDID("$FreeBSD: head/sys/dev/mii/bmtphy.c 119917 2003-09-09 18:17:23Z wpaul $"); 40 41/* 42 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by Manuel Bouyer. 55 * 4. The name of the author may not be used to endorse or promote products 56 * derived from this software without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 63 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 64 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 65 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 66 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 67 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 * 69 * from: NetBSD: bmtphy.c,v 1.8 2002/07/03 06:25:50 simonb Exp 70 * 71 */ 72 73/* 74 * Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also 75 * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in 76 * the 3c905C data sheet. 77 */ 78 79#include <sys/param.h> 80#include <sys/systm.h> 81#include <sys/kernel.h> 82#include <sys/socket.h> 83#include <sys/bus.h> 84 85#include <net/if.h> 86#include <net/if_media.h> 87 88#include <dev/mii/mii.h> 89#include <dev/mii/miivar.h> 90#include "miidevs.h" 91 92#include <dev/mii/bmtphyreg.h> 93 94#include "miibus_if.h" 95 96static int bmtphy_probe(device_t); 97static int bmtphy_attach(device_t); 98 99static device_method_t bmtphy_methods[] = { 100 /* Device interface */ 101 DEVMETHOD(device_probe, bmtphy_probe), 102 DEVMETHOD(device_attach, bmtphy_attach), 103 DEVMETHOD(device_detach, mii_phy_detach), 104 DEVMETHOD(device_shutdown, bus_generic_shutdown), 105 106 { 0, 0 } 107}; 108 109static devclass_t bmtphy_devclass; 110 111static driver_t bmtphy_driver = { 112 "bmtphy", 113 bmtphy_methods, 114 sizeof(struct mii_softc) 115}; 116 117DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0); 118 119static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 120static void bmtphy_status(struct mii_softc *); 121 122static int 123bmtphy_probe(device_t dev) 124{ 125 struct mii_attach_args *ma; 126 int rval; 127 128 ma = device_get_ivars(dev); 129 rval = 0; 130 131 if (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM) 132 return (ENXIO); 133 134 switch (MII_MODEL(ma->mii_id2)) { 135 case MII_MODEL_BROADCOM_3C905B: 136 device_set_desc(dev, MII_STR_BROADCOM_3C905B); 137 rval = -10; /* Let exphy take precedence. */ 138 break; 139 case MII_MODEL_BROADCOM_3C905C: 140 device_set_desc(dev, MII_STR_BROADCOM_3C905C); 141 rval = -10; /* Let exphy take precedence. */ 142 break; 143 case MII_MODEL_BROADCOM_BCM5201: 144 device_set_desc(dev, MII_STR_BROADCOM_BCM5201); 145 break; 146 case MII_MODEL_BROADCOM_BCM5221: 147 device_set_desc(dev, MII_STR_BROADCOM_BCM5221); 148 break; 149 case MII_MODEL_BROADCOM_BCM4401: 150 device_set_desc(dev, MII_STR_BROADCOM_BCM4401); 151 break; 152 default: 153 return (ENXIO); 154 } 155 156 return (rval); 157} 158 159static int 160bmtphy_attach(device_t dev) 161{ 162 struct mii_softc *sc; 163 struct mii_attach_args *ma; 164 struct mii_data *mii; 165 166 sc = device_get_softc(dev); 167 ma = device_get_ivars(dev); 168 sc->mii_dev = device_get_parent(dev); 169 mii = device_get_softc(sc->mii_dev); 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 = bmtphy_service; 175 sc->mii_pdata = mii; 176 177 mii_phy_reset(sc); 178 179 mii->mii_instance++; 180 181 sc->mii_capabilities = 182 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 183 device_printf(dev, " "); 184 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 185 printf("no media present"); 186 else 187 mii_phy_add_media(sc); 188 189 printf("\n"); 190 191 MIIBUS_MEDIAINIT(sc->mii_dev); 192 193 return (0); 194} 195 196static int 197bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 198{ 199 struct ifmedia_entry *ife; 200 int reg; 201 202 ife = mii->mii_media.ifm_cur; 203 204 switch (cmd) { 205 case MII_POLLSTAT: 206 /* 207 * If we're not polling our PHY instance, just return. 208 */ 209 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 210 return (0); 211 break; 212 213 case MII_MEDIACHG: 214 /* 215 * If the media indicates a different PHY instance, 216 * isolate ourselves. 217 */ 218 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 219 reg = PHY_READ(sc, MII_BMCR); 220 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 221 return (0); 222 } 223 224 /* 225 * If the interface is not up, don't do anything. 226 */ 227 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 228 break; 229 230 mii_phy_setmedia(sc); 231 break; 232 233 case MII_TICK: 234 /* 235 * If we're not currently selected, just return. 236 */ 237 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 238 return (0); 239 if (mii_phy_tick(sc) == EJUSTRETURN) 240 return (0); 241 break; 242 } 243 244 /* Update the media status. */ 245 bmtphy_status(sc); 246 247 /* Callback if something changed. */ 248 mii_phy_update(sc, cmd); 249 250 return (0); 251} 252 253static void 254bmtphy_status(struct mii_softc *sc) 255{ 256 struct mii_data *mii; 257 struct ifmedia_entry *ife; 258 int bmsr, bmcr, aux_csr; 259 260 mii = sc->mii_pdata; 261 ife = mii->mii_media.ifm_cur; 262 263 mii->mii_media_status = IFM_AVALID; 264 mii->mii_media_active = IFM_ETHER; 265 266 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 267 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 268 269 if (bmsr & BMSR_LINK) 270 mii->mii_media_status |= IFM_ACTIVE; 271 272 bmcr = PHY_READ(sc, MII_BMCR); 273 if (bmcr & BMCR_ISO) { 274 mii->mii_media_active |= IFM_NONE; 275 mii->mii_media_status = 0; 276 return; 277 } 278 279 if (bmcr & BMCR_LOOP) 280 mii->mii_media_active |= IFM_LOOP; 281 282 if (bmcr & BMCR_AUTOEN) { 283 /* 284 * The media status bits are only valid if autonegotiation 285 * has completed (or it's disabled). 286 */ 287 if ((bmsr & BMSR_ACOMP) == 0) { 288 /* Erg, still trying, I guess... */ 289 mii->mii_media_active |= IFM_NONE; 290 return; 291 } 292 293 if (aux_csr & AUX_CSR_SPEED) 294 mii->mii_media_active |= IFM_100_TX; 295 else 296 mii->mii_media_active |= IFM_10_T; 297 if (aux_csr & AUX_CSR_FDX) 298 mii->mii_media_active |= IFM_FDX; 299 } else 300 mii->mii_media_active = ife->ifm_media; 301} 302