1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-NetBSD 3 * 4 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33/* 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 * 56 * from: NetBSD: bmtphy.c,v 1.8 2002/07/03 06:25:50 simonb Exp 57 * 58 */ 59 60#include <sys/cdefs.h> 61__FBSDID("$FreeBSD$"); 62 63/* 64 * Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also 65 * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in 66 * the 3c905C data sheet. 67 */ 68 69#include <sys/param.h> 70#include <sys/systm.h> 71#include <sys/kernel.h> 72#include <sys/module.h> 73#include <sys/socket.h> 74#include <sys/bus.h> 75 76#include <net/if.h> 77#include <net/if_media.h> 78 79#include <dev/mii/mii.h> 80#include <dev/mii/miivar.h> 81#include "miidevs.h" 82 83#include <dev/mii/bmtphyreg.h> 84 85#include "miibus_if.h" 86 87static int bmtphy_probe(device_t); 88static int bmtphy_attach(device_t); 89 90static device_method_t bmtphy_methods[] = { 91 /* Device interface */ 92 DEVMETHOD(device_probe, bmtphy_probe), 93 DEVMETHOD(device_attach, bmtphy_attach), 94 DEVMETHOD(device_detach, mii_phy_detach), 95 DEVMETHOD(device_shutdown, bus_generic_shutdown), 96 DEVMETHOD_END 97}; 98 99static devclass_t bmtphy_devclass; 100 101static driver_t bmtphy_driver = { 102 "bmtphy", 103 bmtphy_methods, 104 sizeof(struct mii_softc) 105}; 106 107DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0); 108 109static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 110static void bmtphy_status(struct mii_softc *); 111static void bmtphy_reset(struct mii_softc *); 112 113static const struct mii_phydesc bmtphys_dp[] = { 114 MII_PHY_DESC(xxBROADCOM, BCM4401), 115 MII_PHY_DESC(xxBROADCOM, BCM5201), 116 MII_PHY_DESC(xxBROADCOM, BCM5214), 117 MII_PHY_DESC(xxBROADCOM, BCM5221), 118 MII_PHY_DESC(xxBROADCOM, BCM5222), 119 MII_PHY_END 120}; 121 122static const struct mii_phydesc bmtphys_lp[] = { 123 MII_PHY_DESC(xxBROADCOM, 3C905B), 124 MII_PHY_DESC(xxBROADCOM, 3C905C), 125 MII_PHY_END 126}; 127 128static const struct mii_phy_funcs bmtphy_funcs = { 129 bmtphy_service, 130 bmtphy_status, 131 bmtphy_reset 132}; 133 134static int 135bmtphy_probe(device_t dev) 136{ 137 int rval; 138 139 /* Let exphy(4) take precedence for these. */ 140 rval = mii_phy_dev_probe(dev, bmtphys_lp, BUS_PROBE_LOW_PRIORITY); 141 if (rval <= 0) 142 return (rval); 143 144 return (mii_phy_dev_probe(dev, bmtphys_dp, BUS_PROBE_DEFAULT)); 145} 146 147static int 148bmtphy_attach(device_t dev) 149{ 150 151 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &bmtphy_funcs, 1); 152 return (0); 153} 154 155static int 156bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 157{ 158 159 switch (cmd) { 160 case MII_POLLSTAT: 161 break; 162 163 case MII_MEDIACHG: 164 mii_phy_setmedia(sc); 165 break; 166 167 case MII_TICK: 168 if (mii_phy_tick(sc) == EJUSTRETURN) 169 return (0); 170 break; 171 } 172 173 /* Update the media status. */ 174 PHY_STATUS(sc); 175 176 /* Callback if something changed. */ 177 mii_phy_update(sc, cmd); 178 return (0); 179} 180 181static void 182bmtphy_status(struct mii_softc *sc) 183{ 184 struct mii_data *mii; 185 struct ifmedia_entry *ife; 186 int bmsr, bmcr, aux_csr; 187 188 mii = sc->mii_pdata; 189 ife = mii->mii_media.ifm_cur; 190 191 mii->mii_media_status = IFM_AVALID; 192 mii->mii_media_active = IFM_ETHER; 193 194 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 195 196 if (bmsr & BMSR_LINK) 197 mii->mii_media_status |= IFM_ACTIVE; 198 199 bmcr = PHY_READ(sc, MII_BMCR); 200 if (bmcr & BMCR_ISO) { 201 mii->mii_media_active |= IFM_NONE; 202 mii->mii_media_status = 0; 203 return; 204 } 205 206 if (bmcr & BMCR_LOOP) 207 mii->mii_media_active |= IFM_LOOP; 208 209 if (bmcr & BMCR_AUTOEN) { 210 /* 211 * The media status bits are only valid if autonegotiation 212 * has completed (or it's disabled). 213 */ 214 if ((bmsr & BMSR_ACOMP) == 0) { 215 /* Erg, still trying, I guess... */ 216 mii->mii_media_active |= IFM_NONE; 217 return; 218 } 219 220 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 221 if (aux_csr & AUX_CSR_SPEED) 222 mii->mii_media_active |= IFM_100_TX; 223 else 224 mii->mii_media_active |= IFM_10_T; 225 if (aux_csr & AUX_CSR_FDX) 226 mii->mii_media_active |= 227 IFM_FDX | mii_phy_flowstatus(sc); 228 else 229 mii->mii_media_active |= IFM_HDX; 230 } else 231 mii->mii_media_active = ife->ifm_media; 232} 233 234static void 235bmtphy_reset(struct mii_softc *sc) 236{ 237 u_int16_t data; 238 239 mii_phy_reset(sc); 240 241 if (sc->mii_mpd_model == MII_MODEL_xxBROADCOM_BCM5221) { 242 /* Enable shadow register mode. */ 243 data = PHY_READ(sc, 0x1f); 244 PHY_WRITE(sc, 0x1f, data | 0x0080); 245 246 /* Enable APD (Auto PowerDetect). */ 247 data = PHY_READ(sc, MII_BMTPHY_AUX2); 248 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 249 250 /* Enable clocks across APD for Auto-MDIX functionality. */ 251 data = PHY_READ(sc, MII_BMTPHY_INTR); 252 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 253 254 /* Disable shadow register mode. */ 255 data = PHY_READ(sc, 0x1f); 256 PHY_WRITE(sc, 0x1f, data & ~0x0080); 257 } 258} 259