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 __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 87 static int bmtphy_probe(device_t); 88 static int bmtphy_attach(device_t); 89 90 static 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 99 static driver_t bmtphy_driver = { 100 "bmtphy", 101 bmtphy_methods, 102 sizeof(struct mii_softc) 103 }; 104 105 DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, 0, 0); 106 107 static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 108 static void bmtphy_status(struct mii_softc *); 109 static void bmtphy_reset(struct mii_softc *); 110 111 static 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 }; 119 120 static const struct mii_phydesc bmtphys_lp[] = { 121 MII_PHY_DESC(xxBROADCOM, 3C905B), 122 MII_PHY_DESC(xxBROADCOM, 3C905C), 123 MII_PHY_END 124 }; 125 126 static const struct mii_phy_funcs bmtphy_funcs = { 127 bmtphy_service, 128 bmtphy_status, 129 bmtphy_reset 130 }; 131 132 static int 133 bmtphy_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 if (rval <= 0) 140 return (rval); 141 142 return (mii_phy_dev_probe(dev, bmtphys_dp, BUS_PROBE_DEFAULT)); 143 } 144 145 static int 146 bmtphy_attach(device_t dev) 147 { 148 149 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &bmtphy_funcs, 1); 150 return (0); 151 } 152 153 static int 154 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 155 { 156 157 switch (cmd) { 158 case MII_POLLSTAT: 159 break; 160 161 case MII_MEDIACHG: 162 mii_phy_setmedia(sc); 163 break; 164 165 case MII_TICK: 166 if (mii_phy_tick(sc) == EJUSTRETURN) 167 return (0); 168 break; 169 } 170 171 /* Update the media status. */ 172 PHY_STATUS(sc); 173 174 /* Callback if something changed. */ 175 mii_phy_update(sc, cmd); 176 return (0); 177 } 178 179 static void 180 bmtphy_status(struct mii_softc *sc) 181 { 182 struct mii_data *mii; 183 struct ifmedia_entry *ife; 184 int bmsr, bmcr, aux_csr; 185 186 mii = sc->mii_pdata; 187 ife = mii->mii_media.ifm_cur; 188 189 mii->mii_media_status = IFM_AVALID; 190 mii->mii_media_active = IFM_ETHER; 191 192 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 193 194 if (bmsr & BMSR_LINK) 195 mii->mii_media_status |= IFM_ACTIVE; 196 197 bmcr = PHY_READ(sc, MII_BMCR); 198 if (bmcr & BMCR_ISO) { 199 mii->mii_media_active |= IFM_NONE; 200 mii->mii_media_status = 0; 201 return; 202 } 203 204 if (bmcr & BMCR_LOOP) 205 mii->mii_media_active |= IFM_LOOP; 206 207 if (bmcr & BMCR_AUTOEN) { 208 /* 209 * The media status bits are only valid if autonegotiation 210 * has completed (or it's disabled). 211 */ 212 if ((bmsr & BMSR_ACOMP) == 0) { 213 /* Erg, still trying, I guess... */ 214 mii->mii_media_active |= IFM_NONE; 215 return; 216 } 217 218 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 219 if (aux_csr & AUX_CSR_SPEED) 220 mii->mii_media_active |= IFM_100_TX; 221 else 222 mii->mii_media_active |= IFM_10_T; 223 if (aux_csr & AUX_CSR_FDX) 224 mii->mii_media_active |= 225 IFM_FDX | mii_phy_flowstatus(sc); 226 else 227 mii->mii_media_active |= IFM_HDX; 228 } else 229 mii->mii_media_active = ife->ifm_media; 230 } 231 232 static void 233 bmtphy_reset(struct mii_softc *sc) 234 { 235 u_int16_t data; 236 237 mii_phy_reset(sc); 238 239 if (sc->mii_mpd_model == MII_MODEL_xxBROADCOM_BCM5221) { 240 /* Enable shadow register mode. */ 241 data = PHY_READ(sc, 0x1f); 242 PHY_WRITE(sc, 0x1f, data | 0x0080); 243 244 /* Enable APD (Auto PowerDetect). */ 245 data = PHY_READ(sc, MII_BMTPHY_AUX2); 246 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 247 248 /* Enable clocks across APD for Auto-MDIX functionality. */ 249 data = PHY_READ(sc, MII_BMTPHY_INTR); 250 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 251 252 /* Disable shadow register mode. */ 253 data = PHY_READ(sc, 0x1f); 254 PHY_WRITE(sc, 0x1f, data & ~0x0080); 255 } 256 } 257