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 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31/* 32 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 44 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 45 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 46 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 47 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 48 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 49 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 50 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 51 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 52 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 53 * 54 * from: NetBSD: bmtphy.c,v 1.8 2002/07/03 06:25:50 simonb Exp 55 * 56 */ 57 58#include <sys/cdefs.h> 59__FBSDID("$FreeBSD$"); 60 61/* 62 * Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also 63 * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in 64 * the 3c905C data sheet. 65 */ 66 67#include <sys/param.h> 68#include <sys/systm.h> 69#include <sys/kernel.h> 70#include <sys/module.h> 71#include <sys/socket.h> 72#include <sys/bus.h> 73 74#include <net/if.h> 75#include <net/if_media.h> 76 77#include <dev/mii/mii.h> 78#include <dev/mii/miivar.h> 79#include "miidevs.h" 80 81#include <dev/mii/bmtphyreg.h> 82 83#include "miibus_if.h" 84 85static int bmtphy_probe(device_t); 86static int bmtphy_attach(device_t); 87 88static device_method_t bmtphy_methods[] = { 89 /* Device interface */ 90 DEVMETHOD(device_probe, bmtphy_probe), 91 DEVMETHOD(device_attach, bmtphy_attach), 92 DEVMETHOD(device_detach, mii_phy_detach), 93 DEVMETHOD(device_shutdown, bus_generic_shutdown), 94 DEVMETHOD_END 95}; 96 97static devclass_t bmtphy_devclass; 98 99static driver_t bmtphy_driver = { 100 "bmtphy", 101 bmtphy_methods, 102 sizeof(struct mii_softc) 103}; 104 105DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0); 106 107static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 108static void bmtphy_status(struct mii_softc *); 109static void bmtphy_reset(struct mii_softc *); 110 111static const struct mii_phydesc bmtphys_dp[] = { 112 MII_PHY_DESC(xxBROADCOM, BCM4401), 113 MII_PHY_DESC(xxBROADCOM, BCM5201), 114 MII_PHY_DESC(xxBROADCOM, BCM5214), 115 MII_PHY_DESC(xxBROADCOM, BCM5221), 116 MII_PHY_DESC(xxBROADCOM, BCM5222), 117 MII_PHY_END 118}; 119 120static const struct mii_phydesc bmtphys_lp[] = { 121 MII_PHY_DESC(xxBROADCOM, 3C905B), 122 MII_PHY_DESC(xxBROADCOM, 3C905C), 123 MII_PHY_END 124}; 125 126static const struct mii_phy_funcs bmtphy_funcs = { 127 bmtphy_service, 128 bmtphy_status, 129 bmtphy_reset 130}; 131 132static int 133bmtphy_probe(device_t dev) 134{ 135 int rval; 136 137 /* Let exphy(4) take precedence for these. */ 138 rval = mii_phy_dev_probe(dev, bmtphys_lp, BUS_PROBE_LOW_PRIORITY); 139#ifndef __HAIKU__ 140 if (rval <= 0) 141#else 142 if (rval <= 0 && rval != ENXIO) 143 return (rval); 144#endif 145 146 return (mii_phy_dev_probe(dev, bmtphys_dp, BUS_PROBE_DEFAULT)); 147} 148 149static int 150bmtphy_attach(device_t dev) 151{ 152 153 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &bmtphy_funcs, 1); 154 return (0); 155} 156 157static int 158bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 159{ 160 161 switch (cmd) { 162 case MII_POLLSTAT: 163 break; 164 165 case MII_MEDIACHG: 166 /* 167 * If the interface is not up, don't do anything. 168 */ 169 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 170 break; 171 172 mii_phy_setmedia(sc); 173 break; 174 175 case MII_TICK: 176 if (mii_phy_tick(sc) == EJUSTRETURN) 177 return (0); 178 break; 179 } 180 181 /* Update the media status. */ 182 PHY_STATUS(sc); 183 184 /* Callback if something changed. */ 185 mii_phy_update(sc, cmd); 186 return (0); 187} 188 189static void 190bmtphy_status(struct mii_softc *sc) 191{ 192 struct mii_data *mii; 193 struct ifmedia_entry *ife; 194 int bmsr, bmcr, aux_csr; 195 196 mii = sc->mii_pdata; 197 ife = mii->mii_media.ifm_cur; 198 199 mii->mii_media_status = IFM_AVALID; 200 mii->mii_media_active = IFM_ETHER; 201 202 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 203 204 if (bmsr & BMSR_LINK) 205 mii->mii_media_status |= IFM_ACTIVE; 206 207 bmcr = PHY_READ(sc, MII_BMCR); 208 if (bmcr & BMCR_ISO) { 209 mii->mii_media_active |= IFM_NONE; 210 mii->mii_media_status = 0; 211 return; 212 } 213 214 if (bmcr & BMCR_LOOP) 215 mii->mii_media_active |= IFM_LOOP; 216 217 if (bmcr & BMCR_AUTOEN) { 218 /* 219 * The media status bits are only valid if autonegotiation 220 * has completed (or it's disabled). 221 */ 222 if ((bmsr & BMSR_ACOMP) == 0) { 223 /* Erg, still trying, I guess... */ 224 mii->mii_media_active |= IFM_NONE; 225 return; 226 } 227 228 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 229 if (aux_csr & AUX_CSR_SPEED) 230 mii->mii_media_active |= IFM_100_TX; 231 else 232 mii->mii_media_active |= IFM_10_T; 233 if (aux_csr & AUX_CSR_FDX) 234 mii->mii_media_active |= 235 IFM_FDX | mii_phy_flowstatus(sc); 236 else 237 mii->mii_media_active |= IFM_HDX; 238 } else 239 mii->mii_media_active = ife->ifm_media; 240} 241 242static void 243bmtphy_reset(struct mii_softc *sc) 244{ 245 u_int16_t data; 246 247 mii_phy_reset(sc); 248 249 if (sc->mii_mpd_model == MII_MODEL_xxBROADCOM_BCM5221) { 250 /* Enable shadow register mode. */ 251 data = PHY_READ(sc, 0x1f); 252 PHY_WRITE(sc, 0x1f, data | 0x0080); 253 254 /* Enable APD (Auto PowerDetect). */ 255 data = PHY_READ(sc, MII_BMTPHY_AUX2); 256 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 257 258 /* Enable clocks across APD for Auto-MDIX functionality. */ 259 data = PHY_READ(sc, MII_BMTPHY_INTR); 260 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 261 262 /* Disable shadow register mode. */ 263 data = PHY_READ(sc, 0x1f); 264 PHY_WRITE(sc, 0x1f, data & ~0x0080); 265 } 266} 267