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 95 { 0, 0 } 96 }; 97 98 static devclass_t bmtphy_devclass; 99 100 static driver_t bmtphy_driver = { 101 "bmtphy", 102 bmtphy_methods, 103 sizeof(struct mii_softc) 104 }; 105 106 DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0); 107 108 static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 109 static void bmtphy_status(struct mii_softc *); 110 static void bmtphy_reset(struct mii_softc *); 111 112 static const struct mii_phydesc bmtphys_dp[] = { 113 MII_PHY_DESC(xxBROADCOM, BCM4401), 114 MII_PHY_DESC(xxBROADCOM, BCM5201), 115 MII_PHY_DESC(xxBROADCOM, BCM5214), 116 MII_PHY_DESC(xxBROADCOM, BCM5221), 117 MII_PHY_DESC(xxBROADCOM, BCM5222), 118 MII_PHY_END 119 }; 120 121 static const struct mii_phydesc bmtphys_lp[] = { 122 MII_PHY_DESC(xxBROADCOM, 3C905B), 123 MII_PHY_DESC(xxBROADCOM, 3C905C), 124 MII_PHY_END 125 }; 126 127 static const struct mii_phy_funcs bmtphy_funcs = { 128 bmtphy_service, 129 bmtphy_status, 130 bmtphy_reset 131 }; 132 133 static int 134 bmtphy_probe(device_t dev) 135 { 136 int rval; 137 138 /* Let exphy(4) take precedence for these. */ 139 rval = mii_phy_dev_probe(dev, bmtphys_lp, BUS_PROBE_LOW_PRIORITY); 140 if (rval <= 0) 141 return (rval); 142 143 return (mii_phy_dev_probe(dev, bmtphys_dp, BUS_PROBE_DEFAULT)); 144 } 145 146 static int 147 bmtphy_attach(device_t dev) 148 { 149 150 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &bmtphy_funcs, 1); 151 return (0); 152 } 153 154 static int 155 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 156 { 157 158 switch (cmd) { 159 case MII_POLLSTAT: 160 break; 161 162 case MII_MEDIACHG: 163 /* 164 * If the interface is not up, don't do anything. 165 */ 166 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 167 break; 168 169 mii_phy_setmedia(sc); 170 break; 171 172 case MII_TICK: 173 if (mii_phy_tick(sc) == EJUSTRETURN) 174 return (0); 175 break; 176 } 177 178 /* Update the media status. */ 179 PHY_STATUS(sc); 180 181 /* Callback if something changed. */ 182 mii_phy_update(sc, cmd); 183 return (0); 184 } 185 186 static void 187 bmtphy_status(struct mii_softc *sc) 188 { 189 struct mii_data *mii; 190 struct ifmedia_entry *ife; 191 int bmsr, bmcr, aux_csr; 192 193 mii = sc->mii_pdata; 194 ife = mii->mii_media.ifm_cur; 195 196 mii->mii_media_status = IFM_AVALID; 197 mii->mii_media_active = IFM_ETHER; 198 199 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 200 201 if (bmsr & BMSR_LINK) 202 mii->mii_media_status |= IFM_ACTIVE; 203 204 bmcr = PHY_READ(sc, MII_BMCR); 205 if (bmcr & BMCR_ISO) { 206 mii->mii_media_active |= IFM_NONE; 207 mii->mii_media_status = 0; 208 return; 209 } 210 211 if (bmcr & BMCR_LOOP) 212 mii->mii_media_active |= IFM_LOOP; 213 214 if (bmcr & BMCR_AUTOEN) { 215 /* 216 * The media status bits are only valid if autonegotiation 217 * has completed (or it's disabled). 218 */ 219 if ((bmsr & BMSR_ACOMP) == 0) { 220 /* Erg, still trying, I guess... */ 221 mii->mii_media_active |= IFM_NONE; 222 return; 223 } 224 225 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 226 if (aux_csr & AUX_CSR_SPEED) 227 mii->mii_media_active |= IFM_100_TX; 228 else 229 mii->mii_media_active |= IFM_10_T; 230 if (aux_csr & AUX_CSR_FDX) 231 mii->mii_media_active |= 232 IFM_FDX | mii_phy_flowstatus(sc); 233 else 234 mii->mii_media_active |= IFM_HDX; 235 } else 236 mii->mii_media_active = ife->ifm_media; 237 } 238 239 static void 240 bmtphy_reset(struct mii_softc *sc) 241 { 242 u_int16_t data; 243 244 mii_phy_reset(sc); 245 246 if (sc->mii_mpd_model == MII_MODEL_xxBROADCOM_BCM5221) { 247 /* Enable shadow register mode. */ 248 data = PHY_READ(sc, 0x1f); 249 PHY_WRITE(sc, 0x1f, data | 0x0080); 250 251 /* Enable APD (Auto PowerDetect). */ 252 data = PHY_READ(sc, MII_BMTPHY_AUX2); 253 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 254 255 /* Enable clocks across APD for Auto-MDIX functionality. */ 256 data = PHY_READ(sc, MII_BMTPHY_INTR); 257 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 258 259 /* Disable shadow register mode. */ 260 data = PHY_READ(sc, 0x1f); 261 PHY_WRITE(sc, 0x1f, data & ~0x0080); 262 } 263 } 264