1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 /* 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 85 static int bmtphy_probe(device_t); 86 static int bmtphy_attach(device_t); 87 88 static 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 97 static driver_t bmtphy_driver = { 98 "bmtphy", 99 bmtphy_methods, 100 sizeof(struct mii_softc) 101 }; 102 103 DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, 0, 0); 104 105 static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 106 static void bmtphy_status(struct mii_softc *); 107 static void bmtphy_reset(struct mii_softc *); 108 109 static const struct mii_phydesc bmtphys_dp[] = { 110 MII_PHY_DESC(xxBROADCOM, BCM4401), 111 MII_PHY_DESC(xxBROADCOM, BCM5201), 112 MII_PHY_DESC(xxBROADCOM, BCM5214), 113 MII_PHY_DESC(xxBROADCOM, BCM5221), 114 MII_PHY_DESC(xxBROADCOM, BCM5222), 115 MII_PHY_END 116 }; 117 118 static const struct mii_phydesc bmtphys_lp[] = { 119 MII_PHY_DESC(xxBROADCOM, 3C905B), 120 MII_PHY_DESC(xxBROADCOM, 3C905C), 121 MII_PHY_END 122 }; 123 124 static const struct mii_phy_funcs bmtphy_funcs = { 125 bmtphy_service, 126 bmtphy_status, 127 bmtphy_reset 128 }; 129 130 static int 131 bmtphy_probe(device_t dev) 132 { 133 int rval; 134 135 /* Let exphy(4) take precedence for these. */ 136 rval = mii_phy_dev_probe(dev, bmtphys_lp, BUS_PROBE_LOW_PRIORITY); 137 if (rval <= 0) 138 return (rval); 139 140 return (mii_phy_dev_probe(dev, bmtphys_dp, BUS_PROBE_DEFAULT)); 141 } 142 143 static int 144 bmtphy_attach(device_t dev) 145 { 146 147 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &bmtphy_funcs, 1); 148 return (0); 149 } 150 151 static int 152 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 153 { 154 155 switch (cmd) { 156 case MII_POLLSTAT: 157 break; 158 159 case MII_MEDIACHG: 160 mii_phy_setmedia(sc); 161 break; 162 163 case MII_TICK: 164 if (mii_phy_tick(sc) == EJUSTRETURN) 165 return (0); 166 break; 167 } 168 169 /* Update the media status. */ 170 PHY_STATUS(sc); 171 172 /* Callback if something changed. */ 173 mii_phy_update(sc, cmd); 174 return (0); 175 } 176 177 static void 178 bmtphy_status(struct mii_softc *sc) 179 { 180 struct mii_data *mii; 181 struct ifmedia_entry *ife; 182 int bmsr, bmcr, aux_csr; 183 184 mii = sc->mii_pdata; 185 ife = mii->mii_media.ifm_cur; 186 187 mii->mii_media_status = IFM_AVALID; 188 mii->mii_media_active = IFM_ETHER; 189 190 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 191 192 if (bmsr & BMSR_LINK) 193 mii->mii_media_status |= IFM_ACTIVE; 194 195 bmcr = PHY_READ(sc, MII_BMCR); 196 if (bmcr & BMCR_ISO) { 197 mii->mii_media_active |= IFM_NONE; 198 mii->mii_media_status = 0; 199 return; 200 } 201 202 if (bmcr & BMCR_LOOP) 203 mii->mii_media_active |= IFM_LOOP; 204 205 if (bmcr & BMCR_AUTOEN) { 206 /* 207 * The media status bits are only valid if autonegotiation 208 * has completed (or it's disabled). 209 */ 210 if ((bmsr & BMSR_ACOMP) == 0) { 211 /* Erg, still trying, I guess... */ 212 mii->mii_media_active |= IFM_NONE; 213 return; 214 } 215 216 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 217 if (aux_csr & AUX_CSR_SPEED) 218 mii->mii_media_active |= IFM_100_TX; 219 else 220 mii->mii_media_active |= IFM_10_T; 221 if (aux_csr & AUX_CSR_FDX) 222 mii->mii_media_active |= 223 IFM_FDX | mii_phy_flowstatus(sc); 224 else 225 mii->mii_media_active |= IFM_HDX; 226 } else 227 mii->mii_media_active = ife->ifm_media; 228 } 229 230 static void 231 bmtphy_reset(struct mii_softc *sc) 232 { 233 u_int16_t data; 234 235 mii_phy_reset(sc); 236 237 if (sc->mii_mpd_model == MII_MODEL_xxBROADCOM_BCM5221) { 238 /* Enable shadow register mode. */ 239 data = PHY_READ(sc, 0x1f); 240 PHY_WRITE(sc, 0x1f, data | 0x0080); 241 242 /* Enable APD (Auto PowerDetect). */ 243 data = PHY_READ(sc, MII_BMTPHY_AUX2); 244 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 245 246 /* Enable clocks across APD for Auto-MDIX functionality. */ 247 data = PHY_READ(sc, MII_BMTPHY_INTR); 248 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 249 250 /* Disable shadow register mode. */ 251 data = PHY_READ(sc, 0x1f); 252 PHY_WRITE(sc, 0x1f, data & ~0x0080); 253 } 254 } 255