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 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 devclass_t bmtphy_devclass; 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, bmtphy_devclass, 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 /* 163 * If the interface is not up, don't do anything. 164 */ 165 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 166 break; 167 168 mii_phy_setmedia(sc); 169 break; 170 171 case MII_TICK: 172 if (mii_phy_tick(sc) == EJUSTRETURN) 173 return (0); 174 break; 175 } 176 177 /* Update the media status. */ 178 PHY_STATUS(sc); 179 180 /* Callback if something changed. */ 181 mii_phy_update(sc, cmd); 182 return (0); 183 } 184 185 static void 186 bmtphy_status(struct mii_softc *sc) 187 { 188 struct mii_data *mii; 189 struct ifmedia_entry *ife; 190 int bmsr, bmcr, aux_csr; 191 192 mii = sc->mii_pdata; 193 ife = mii->mii_media.ifm_cur; 194 195 mii->mii_media_status = IFM_AVALID; 196 mii->mii_media_active = IFM_ETHER; 197 198 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 199 200 if (bmsr & BMSR_LINK) 201 mii->mii_media_status |= IFM_ACTIVE; 202 203 bmcr = PHY_READ(sc, MII_BMCR); 204 if (bmcr & BMCR_ISO) { 205 mii->mii_media_active |= IFM_NONE; 206 mii->mii_media_status = 0; 207 return; 208 } 209 210 if (bmcr & BMCR_LOOP) 211 mii->mii_media_active |= IFM_LOOP; 212 213 if (bmcr & BMCR_AUTOEN) { 214 /* 215 * The media status bits are only valid if autonegotiation 216 * has completed (or it's disabled). 217 */ 218 if ((bmsr & BMSR_ACOMP) == 0) { 219 /* Erg, still trying, I guess... */ 220 mii->mii_media_active |= IFM_NONE; 221 return; 222 } 223 224 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 225 if (aux_csr & AUX_CSR_SPEED) 226 mii->mii_media_active |= IFM_100_TX; 227 else 228 mii->mii_media_active |= IFM_10_T; 229 if (aux_csr & AUX_CSR_FDX) 230 mii->mii_media_active |= 231 IFM_FDX | mii_phy_flowstatus(sc); 232 else 233 mii->mii_media_active |= IFM_HDX; 234 } else 235 mii->mii_media_active = ife->ifm_media; 236 } 237 238 static void 239 bmtphy_reset(struct mii_softc *sc) 240 { 241 u_int16_t data; 242 243 mii_phy_reset(sc); 244 245 if (sc->mii_mpd_model == MII_MODEL_xxBROADCOM_BCM5221) { 246 /* Enable shadow register mode. */ 247 data = PHY_READ(sc, 0x1f); 248 PHY_WRITE(sc, 0x1f, data | 0x0080); 249 250 /* Enable APD (Auto PowerDetect). */ 251 data = PHY_READ(sc, MII_BMTPHY_AUX2); 252 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 253 254 /* Enable clocks across APD for Auto-MDIX functionality. */ 255 data = PHY_READ(sc, MII_BMTPHY_INTR); 256 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 257 258 /* Disable shadow register mode. */ 259 data = PHY_READ(sc, 0x1f); 260 PHY_WRITE(sc, 0x1f, data & ~0x0080); 261 } 262 } 263