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 */ 69 70 #include <sys/cdefs.h> 71 __FBSDID("$FreeBSD$"); 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/module.h> 83 #include <sys/socket.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 <dev/mii/bmtphyreg.h> 94 95 #include "miibus_if.h" 96 97 static int bmtphy_probe(device_t); 98 static int bmtphy_attach(device_t); 99 100 static device_method_t bmtphy_methods[] = { 101 /* Device interface */ 102 DEVMETHOD(device_probe, bmtphy_probe), 103 DEVMETHOD(device_attach, bmtphy_attach), 104 DEVMETHOD(device_detach, mii_phy_detach), 105 DEVMETHOD(device_shutdown, bus_generic_shutdown), 106 107 { 0, 0 } 108 }; 109 110 static devclass_t bmtphy_devclass; 111 112 static driver_t bmtphy_driver = { 113 "bmtphy", 114 bmtphy_methods, 115 sizeof(struct mii_softc) 116 }; 117 118 DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0); 119 120 static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 121 static void bmtphy_status(struct mii_softc *); 122 123 static int 124 bmtphy_probe(device_t dev) 125 { 126 struct mii_attach_args *ma; 127 int rval; 128 129 ma = device_get_ivars(dev); 130 rval = 0; 131 132 if (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM) 133 return (ENXIO); 134 135 switch (MII_MODEL(ma->mii_id2)) { 136 case MII_MODEL_BROADCOM_3C905B: 137 device_set_desc(dev, MII_STR_BROADCOM_3C905B); 138 rval = -10; /* Let exphy take precedence. */ 139 break; 140 case MII_MODEL_BROADCOM_3C905C: 141 device_set_desc(dev, MII_STR_BROADCOM_3C905C); 142 rval = -10; /* Let exphy take precedence. */ 143 break; 144 case MII_MODEL_BROADCOM_BCM5201: 145 device_set_desc(dev, MII_STR_BROADCOM_BCM5201); 146 break; 147 case MII_MODEL_BROADCOM_BCM5221: 148 device_set_desc(dev, MII_STR_BROADCOM_BCM5221); 149 break; 150 case MII_MODEL_BROADCOM_BCM4401: 151 device_set_desc(dev, MII_STR_BROADCOM_BCM4401); 152 break; 153 default: 154 return (ENXIO); 155 } 156 157 return (rval); 158 } 159 160 static int 161 bmtphy_attach(device_t dev) 162 { 163 struct mii_softc *sc; 164 struct mii_attach_args *ma; 165 struct mii_data *mii; 166 167 sc = device_get_softc(dev); 168 ma = device_get_ivars(dev); 169 sc->mii_dev = device_get_parent(dev); 170 mii = device_get_softc(sc->mii_dev); 171 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 172 173 sc->mii_inst = mii->mii_instance; 174 sc->mii_phy = ma->mii_phyno; 175 sc->mii_service = bmtphy_service; 176 sc->mii_pdata = mii; 177 178 mii_phy_reset(sc); 179 180 mii->mii_instance++; 181 182 sc->mii_capabilities = 183 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 184 device_printf(dev, " "); 185 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 186 printf("no media present"); 187 else 188 mii_phy_add_media(sc); 189 190 printf("\n"); 191 192 MIIBUS_MEDIAINIT(sc->mii_dev); 193 194 return (0); 195 } 196 197 static int 198 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 199 { 200 struct ifmedia_entry *ife; 201 int reg; 202 203 ife = mii->mii_media.ifm_cur; 204 205 switch (cmd) { 206 case MII_POLLSTAT: 207 /* 208 * If we're not polling our PHY instance, just return. 209 */ 210 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 211 return (0); 212 break; 213 214 case MII_MEDIACHG: 215 /* 216 * If the media indicates a different PHY instance, 217 * isolate ourselves. 218 */ 219 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 220 reg = PHY_READ(sc, MII_BMCR); 221 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 222 return (0); 223 } 224 225 /* 226 * If the interface is not up, don't do anything. 227 */ 228 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 229 break; 230 231 mii_phy_setmedia(sc); 232 break; 233 234 case MII_TICK: 235 /* 236 * If we're not currently selected, just return. 237 */ 238 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 239 return (0); 240 if (mii_phy_tick(sc) == EJUSTRETURN) 241 return (0); 242 break; 243 } 244 245 /* Update the media status. */ 246 bmtphy_status(sc); 247 248 /* Callback if something changed. */ 249 mii_phy_update(sc, cmd); 250 251 return (0); 252 } 253 254 static void 255 bmtphy_status(struct mii_softc *sc) 256 { 257 struct mii_data *mii; 258 struct ifmedia_entry *ife; 259 int bmsr, bmcr, aux_csr; 260 261 mii = sc->mii_pdata; 262 ife = mii->mii_media.ifm_cur; 263 264 mii->mii_media_status = IFM_AVALID; 265 mii->mii_media_active = IFM_ETHER; 266 267 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 268 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 269 270 if (bmsr & BMSR_LINK) 271 mii->mii_media_status |= IFM_ACTIVE; 272 273 bmcr = PHY_READ(sc, MII_BMCR); 274 if (bmcr & BMCR_ISO) { 275 mii->mii_media_active |= IFM_NONE; 276 mii->mii_media_status = 0; 277 return; 278 } 279 280 if (bmcr & BMCR_LOOP) 281 mii->mii_media_active |= IFM_LOOP; 282 283 if (bmcr & BMCR_AUTOEN) { 284 /* 285 * The media status bits are only valid if autonegotiation 286 * has completed (or it's disabled). 287 */ 288 if ((bmsr & BMSR_ACOMP) == 0) { 289 /* Erg, still trying, I guess... */ 290 mii->mii_media_active |= IFM_NONE; 291 return; 292 } 293 294 if (aux_csr & AUX_CSR_SPEED) 295 mii->mii_media_active |= IFM_100_TX; 296 else 297 mii->mii_media_active |= IFM_10_T; 298 if (aux_csr & AUX_CSR_FDX) 299 mii->mii_media_active |= IFM_FDX; 300 } else 301 mii->mii_media_active = ife->ifm_media; 302 } 303