bmtphy.c revision 109514
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: head/sys/dev/mii/bmtphy.c 109514 2003-01-19 02:59:34Z obrien $ 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 94static int bmtphy_probe(device_t); 95static int bmtphy_attach(device_t); 96 97static 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 107static devclass_t bmtphy_devclass; 108 109static driver_t bmtphy_driver = { 110 "bmtphy", 111 bmtphy_methods, 112 sizeof(struct mii_softc) 113}; 114 115DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0); 116 117static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 118static void bmtphy_status(struct mii_softc *); 119 120static int 121bmtphy_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 break; 150 } 151 152 return (rval); 153} 154 155static int 156bmtphy_attach(device_t dev) 157{ 158 struct mii_softc *sc; 159 struct mii_attach_args *ma; 160 struct mii_data *mii; 161 162 sc = device_get_softc(dev); 163 ma = device_get_ivars(dev); 164 sc->mii_dev = device_get_parent(dev); 165 mii = device_get_softc(sc->mii_dev); 166 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 167 168 sc->mii_inst = mii->mii_instance; 169 sc->mii_phy = ma->mii_phyno; 170 sc->mii_service = bmtphy_service; 171 sc->mii_pdata = mii; 172 173 mii_phy_reset(sc); 174 175 mii->mii_instance++; 176 177 sc->mii_capabilities = 178 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 179 device_printf(dev, " "); 180 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 181 printf("no media present"); 182 else 183 mii_phy_add_media(sc); 184 185 printf("\n"); 186 187 MIIBUS_MEDIAINIT(sc->mii_dev); 188 189 return (0); 190} 191 192static int 193bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 194{ 195 struct ifmedia_entry *ife; 196 int reg; 197 198 ife = mii->mii_media.ifm_cur; 199 200 switch (cmd) { 201 case MII_POLLSTAT: 202 /* 203 * If we're not polling our PHY instance, just return. 204 */ 205 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 206 return (0); 207 break; 208 209 case MII_MEDIACHG: 210 /* 211 * If the media indicates a different PHY instance, 212 * isolate ourselves. 213 */ 214 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 215 reg = PHY_READ(sc, MII_BMCR); 216 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 217 return (0); 218 } 219 220 /* 221 * If the interface is not up, don't do anything. 222 */ 223 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 224 break; 225 226 mii_phy_setmedia(sc); 227 break; 228 229 case MII_TICK: 230 /* 231 * If we're not currently selected, just return. 232 */ 233 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 234 return (0); 235 if (mii_phy_tick(sc) == EJUSTRETURN) 236 return (0); 237 break; 238 } 239 240 /* Update the media status. */ 241 bmtphy_status(sc); 242 243 /* Callback if something changed. */ 244 mii_phy_update(sc, cmd); 245 246 return (0); 247} 248 249static void 250bmtphy_status(struct mii_softc *sc) 251{ 252 struct mii_data *mii; 253 struct ifmedia_entry *ife; 254 int bmsr, bmcr, aux_csr; 255 256 mii = sc->mii_pdata; 257 ife = mii->mii_media.ifm_cur; 258 259 mii->mii_media_status = IFM_AVALID; 260 mii->mii_media_active = IFM_ETHER; 261 262 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 263 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 264 265 if (bmsr & BMSR_LINK) 266 mii->mii_media_status |= IFM_ACTIVE; 267 268 bmcr = PHY_READ(sc, MII_BMCR); 269 if (bmcr & BMCR_ISO) { 270 mii->mii_media_active |= IFM_NONE; 271 mii->mii_media_status = 0; 272 return; 273 } 274 275 if (bmcr & BMCR_LOOP) 276 mii->mii_media_active |= IFM_LOOP; 277 278 if (bmcr & BMCR_AUTOEN) { 279 /* 280 * The media status bits are only valid if autonegotiation 281 * has completed (or it's disabled). 282 */ 283 if ((bmsr & BMSR_ACOMP) == 0) { 284 /* Erg, still trying, I guess... */ 285 mii->mii_media_active |= IFM_NONE; 286 return; 287 } 288 289 if (aux_csr & AUX_CSR_SPEED) 290 mii->mii_media_active |= IFM_100_TX; 291 else 292 mii->mii_media_active |= IFM_10_T; 293 if (aux_csr & AUX_CSR_FDX) 294 mii->mii_media_active |= IFM_FDX; 295 } else 296 mii->mii_media_active = ife->ifm_media; 297} 298