bmtphy.c revision 99440
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 99440 2002-07-05 11:07:24Z benno $ 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/malloc.h> 81#include <sys/socket.h> 82#include <sys/bus.h> 83 84#include <net/if.h> 85#include <net/if_media.h> 86 87#include <dev/mii/mii.h> 88#include <dev/mii/miivar.h> 89#include <dev/mii/miidevs.h> 90 91#include <dev/mii/bmtphyreg.h> 92 93#include "miibus_if.h" 94 95static int bmtphy_probe(device_t); 96static int bmtphy_attach(device_t); 97 98static device_method_t bmtphy_methods[] = { 99 /* Device interface */ 100 DEVMETHOD(device_probe, bmtphy_probe), 101 DEVMETHOD(device_attach, bmtphy_attach), 102 DEVMETHOD(device_detach, mii_phy_detach), 103 DEVMETHOD(device_shutdown, bus_generic_shutdown), 104 105 { 0, 0 } 106}; 107 108static devclass_t bmtphy_devclass; 109 110static driver_t bmtphy_driver = { 111 "bmtphy", 112 bmtphy_methods, 113 sizeof(struct mii_softc) 114}; 115 116DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0); 117 118static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 119static void bmtphy_status(struct mii_softc *); 120 121static int 122bmtphy_probe(device_t dev) 123{ 124 struct mii_attach_args *ma; 125 int rval; 126 127 ma = device_get_ivars(dev); 128 rval = 0; 129 130 if (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM) 131 return (ENXIO); 132 133 switch (MII_MODEL(ma->mii_id2)) { 134 case MII_MODEL_BROADCOM_3C905B: 135 device_set_desc(dev, MII_STR_BROADCOM_3C905B); 136 rval = -10; /* Let exphy take precedence. */ 137 break; 138 case MII_MODEL_BROADCOM_3C905C: 139 device_set_desc(dev, MII_STR_BROADCOM_3C905C); 140 rval = -10; /* Let exphy take precedence. */ 141 break; 142 case MII_MODEL_BROADCOM_BCM5201: 143 device_set_desc(dev, MII_STR_BROADCOM_BCM5201); 144 break; 145 case MII_MODEL_BROADCOM_BCM5221: 146 device_set_desc(dev, MII_STR_BROADCOM_BCM5221); 147 break; 148 default: 149 return (ENXIO); 150 break; 151 } 152 153 return (rval); 154} 155 156static int 157bmtphy_attach(device_t dev) 158{ 159 struct mii_softc *sc; 160 struct mii_attach_args *ma; 161 struct mii_data *mii; 162 163 sc = device_get_softc(dev); 164 ma = device_get_ivars(dev); 165 sc->mii_dev = device_get_parent(dev); 166 mii = device_get_softc(sc->mii_dev); 167 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 168 169 sc->mii_inst = mii->mii_instance; 170 sc->mii_phy = ma->mii_phyno; 171 sc->mii_service = bmtphy_service; 172 sc->mii_pdata = mii; 173 174 mii_phy_reset(sc); 175 176 mii->mii_instance++; 177 178 sc->mii_capabilities = 179 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 180 device_printf(dev, " "); 181 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 182 printf("no media present"); 183 else 184 mii_phy_add_media(sc); 185 186 printf("\n"); 187 188 MIIBUS_MEDIAINIT(sc->mii_dev); 189 190 return (0); 191} 192 193static int 194bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 195{ 196 struct ifmedia_entry *ife; 197 int reg; 198 199 ife = mii->mii_media.ifm_cur; 200 201 switch (cmd) { 202 case MII_POLLSTAT: 203 /* 204 * If we're not polling our PHY instance, just return. 205 */ 206 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 207 return (0); 208 break; 209 210 case MII_MEDIACHG: 211 /* 212 * If the media indicates a different PHY instance, 213 * isolate ourselves. 214 */ 215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 216 reg = PHY_READ(sc, MII_BMCR); 217 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 218 return (0); 219 } 220 221 /* 222 * If the interface is not up, don't do anything. 223 */ 224 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 225 break; 226 227 mii_phy_setmedia(sc); 228 break; 229 230 case MII_TICK: 231 /* 232 * If we're not currently selected, just return. 233 */ 234 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 235 return (0); 236 if (mii_phy_tick(sc) == EJUSTRETURN) 237 return (0); 238 break; 239 } 240 241 /* Update the media status. */ 242 bmtphy_status(sc); 243 244 /* Callback if something changed. */ 245 mii_phy_update(sc, cmd); 246 247 return (0); 248} 249 250static void 251bmtphy_status(struct mii_softc *sc) 252{ 253 struct mii_data *mii; 254 struct ifmedia_entry *ife; 255 int bmsr, bmcr, aux_csr; 256 257 mii = sc->mii_pdata; 258 ife = mii->mii_media.ifm_cur; 259 260 mii->mii_media_status = IFM_AVALID; 261 mii->mii_media_active = IFM_ETHER; 262 263 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 264 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 265 266 if (bmsr & BMSR_LINK) 267 mii->mii_media_status |= IFM_ACTIVE; 268 269 bmcr = PHY_READ(sc, MII_BMCR); 270 if (bmcr & BMCR_ISO) { 271 mii->mii_media_active |= IFM_NONE; 272 mii->mii_media_status = 0; 273 return; 274 } 275 276 if (bmcr & BMCR_LOOP) 277 mii->mii_media_active |= IFM_LOOP; 278 279 if (bmcr & BMCR_AUTOEN) { 280 /* 281 * The media status bits are only valid if autonegotiation 282 * has completed (or it's disabled). 283 */ 284 if ((bmsr & BMSR_ACOMP) == 0) { 285 /* Erg, still trying, I guess... */ 286 mii->mii_media_active |= IFM_NONE; 287 return; 288 } 289 290 if (aux_csr & AUX_CSR_SPEED) 291 mii->mii_media_active |= IFM_100_TX; 292 else 293 mii->mii_media_active |= IFM_10_T; 294 if (aux_csr & AUX_CSR_FDX) 295 mii->mii_media_active |= IFM_FDX; 296 } else 297 mii->mii_media_active = ife->ifm_media; 298} 299