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 /* 39 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by Manuel Bouyer. 52 * 4. The name of the author may not be used to endorse or promote products 53 * derived from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 56 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 57 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 58 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 59 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 60 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 64 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 65 * 66 * from: NetBSD: bmtphy.c,v 1.8 2002/07/03 06:25:50 simonb Exp 67 * 68 * $FreeBSD$ 69 */ 70 71 /* 72 * Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also 73 * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in 74 * the 3c905C data sheet. 75 */ 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/socket.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 <dev/mii/bmtphyreg.h> 91 92 #include "miibus_if.h" 93 94 static int bmtphy_probe(device_t); 95 static int bmtphy_attach(device_t); 96 97 static device_method_t bmtphy_methods[] = { 98 /* Device interface */ 99 DEVMETHOD(device_probe, bmtphy_probe), 100 DEVMETHOD(device_attach, bmtphy_attach), 101 DEVMETHOD(device_detach, mii_phy_detach), 102 DEVMETHOD(device_shutdown, bus_generic_shutdown), 103 104 { 0, 0 } 105 }; 106 107 static devclass_t bmtphy_devclass; 108 109 static driver_t bmtphy_driver = { 110 "bmtphy", 111 bmtphy_methods, 112 sizeof(struct mii_softc) 113 }; 114 115 DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0); 116 117 static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 118 static void bmtphy_status(struct mii_softc *); 119 120 static int 121 bmtphy_probe(device_t dev) 122 { 123 struct mii_attach_args *ma; 124 int rval; 125 126 ma = device_get_ivars(dev); 127 rval = 0; 128 129 if (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM) 130 return (ENXIO); 131 132 switch (MII_MODEL(ma->mii_id2)) { 133 case MII_MODEL_BROADCOM_3C905B: 134 device_set_desc(dev, MII_STR_BROADCOM_3C905B); 135 rval = -10; /* Let exphy take precedence. */ 136 break; 137 case MII_MODEL_BROADCOM_3C905C: 138 device_set_desc(dev, MII_STR_BROADCOM_3C905C); 139 rval = -10; /* Let exphy take precedence. */ 140 break; 141 case MII_MODEL_BROADCOM_BCM5201: 142 device_set_desc(dev, MII_STR_BROADCOM_BCM5201); 143 break; 144 case MII_MODEL_BROADCOM_BCM5221: 145 device_set_desc(dev, MII_STR_BROADCOM_BCM5221); 146 break; 147 default: 148 return (ENXIO); 149 } 150 151 return (rval); 152 } 153 154 static int 155 bmtphy_attach(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 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 166 167 sc->mii_inst = mii->mii_instance; 168 sc->mii_phy = ma->mii_phyno; 169 sc->mii_service = bmtphy_service; 170 sc->mii_pdata = mii; 171 172 mii_phy_reset(sc); 173 174 mii->mii_instance++; 175 176 sc->mii_capabilities = 177 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 178 device_printf(dev, " "); 179 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 180 printf("no media present"); 181 else 182 mii_phy_add_media(sc); 183 184 printf("\n"); 185 186 MIIBUS_MEDIAINIT(sc->mii_dev); 187 188 return (0); 189 } 190 191 static int 192 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 193 { 194 struct ifmedia_entry *ife; 195 int reg; 196 197 ife = mii->mii_media.ifm_cur; 198 199 switch (cmd) { 200 case MII_POLLSTAT: 201 /* 202 * If we're not polling our PHY instance, just return. 203 */ 204 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 205 return (0); 206 break; 207 208 case MII_MEDIACHG: 209 /* 210 * If the media indicates a different PHY instance, 211 * isolate ourselves. 212 */ 213 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 214 reg = PHY_READ(sc, MII_BMCR); 215 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 216 return (0); 217 } 218 219 /* 220 * If the interface is not up, don't do anything. 221 */ 222 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 223 break; 224 225 mii_phy_setmedia(sc); 226 break; 227 228 case MII_TICK: 229 /* 230 * If we're not currently selected, just return. 231 */ 232 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 233 return (0); 234 if (mii_phy_tick(sc) == EJUSTRETURN) 235 return (0); 236 break; 237 } 238 239 /* Update the media status. */ 240 bmtphy_status(sc); 241 242 /* Callback if something changed. */ 243 mii_phy_update(sc, cmd); 244 245 return (0); 246 } 247 248 static void 249 bmtphy_status(struct mii_softc *sc) 250 { 251 struct mii_data *mii; 252 struct ifmedia_entry *ife; 253 int bmsr, bmcr, aux_csr; 254 255 mii = sc->mii_pdata; 256 ife = mii->mii_media.ifm_cur; 257 258 mii->mii_media_status = IFM_AVALID; 259 mii->mii_media_active = IFM_ETHER; 260 261 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 262 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 263 264 if (bmsr & BMSR_LINK) 265 mii->mii_media_status |= IFM_ACTIVE; 266 267 bmcr = PHY_READ(sc, MII_BMCR); 268 if (bmcr & BMCR_ISO) { 269 mii->mii_media_active |= IFM_NONE; 270 mii->mii_media_status = 0; 271 return; 272 } 273 274 if (bmcr & BMCR_LOOP) 275 mii->mii_media_active |= IFM_LOOP; 276 277 if (bmcr & BMCR_AUTOEN) { 278 /* 279 * The media status bits are only valid if autonegotiation 280 * has completed (or it's disabled). 281 */ 282 if ((bmsr & BMSR_ACOMP) == 0) { 283 /* Erg, still trying, I guess... */ 284 mii->mii_media_active |= IFM_NONE; 285 return; 286 } 287 288 if (aux_csr & AUX_CSR_SPEED) 289 mii->mii_media_active |= IFM_100_TX; 290 else 291 mii->mii_media_active |= IFM_10_T; 292 if (aux_csr & AUX_CSR_FDX) 293 mii->mii_media_active |= IFM_FDX; 294 } else 295 mii->mii_media_active = ife->ifm_media; 296 } 297