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 struct bmtphy_softc { 89 struct mii_softc mii_sc; 90 int mii_model; 91 }; 92 93 static device_method_t bmtphy_methods[] = { 94 /* Device interface */ 95 DEVMETHOD(device_probe, bmtphy_probe), 96 DEVMETHOD(device_attach, bmtphy_attach), 97 DEVMETHOD(device_detach, mii_phy_detach), 98 DEVMETHOD(device_shutdown, bus_generic_shutdown), 99 100 { 0, 0 } 101 }; 102 103 static devclass_t bmtphy_devclass; 104 105 static driver_t bmtphy_driver = { 106 "bmtphy", 107 bmtphy_methods, 108 sizeof(struct bmtphy_softc) 109 }; 110 111 DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0); 112 113 static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 114 static void bmtphy_status(struct mii_softc *); 115 static void bmtphy_reset(struct mii_softc *); 116 117 static const struct mii_phydesc bmtphys_dp[] = { 118 MII_PHY_DESC(BROADCOM, BCM4401), 119 MII_PHY_DESC(BROADCOM, BCM5201), 120 MII_PHY_DESC(BROADCOM, BCM5214), 121 MII_PHY_DESC(BROADCOM, BCM5221), 122 MII_PHY_DESC(BROADCOM, BCM5222), 123 MII_PHY_END 124 }; 125 126 static const struct mii_phydesc bmtphys_lp[] = { 127 MII_PHY_DESC(BROADCOM, 3C905B), 128 MII_PHY_DESC(BROADCOM, 3C905C), 129 MII_PHY_END 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 struct bmtphy_softc *bsc; 149 struct mii_softc *sc; 150 struct mii_attach_args *ma; 151 struct mii_data *mii; 152 153 bsc = device_get_softc(dev); 154 sc = &bsc->mii_sc; 155 ma = device_get_ivars(dev); 156 sc->mii_dev = device_get_parent(dev); 157 mii = ma->mii_data; 158 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 159 160 sc->mii_flags = miibus_get_flags(dev); 161 sc->mii_inst = mii->mii_instance++; 162 sc->mii_phy = ma->mii_phyno; 163 sc->mii_service = bmtphy_service; 164 sc->mii_pdata = mii; 165 166 sc->mii_flags |= MIIF_NOMANPAUSE; 167 168 bsc->mii_model = MII_MODEL(ma->mii_id2); 169 170 bmtphy_reset(sc); 171 172 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 173 device_printf(dev, " "); 174 mii_phy_add_media(sc); 175 printf("\n"); 176 177 MIIBUS_MEDIAINIT(sc->mii_dev); 178 179 return (0); 180 } 181 182 static int 183 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 184 { 185 186 switch (cmd) { 187 case MII_POLLSTAT: 188 break; 189 190 case MII_MEDIACHG: 191 /* 192 * If the interface is not up, don't do anything. 193 */ 194 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 195 break; 196 197 mii_phy_setmedia(sc); 198 break; 199 200 case MII_TICK: 201 if (mii_phy_tick(sc) == EJUSTRETURN) 202 return (0); 203 break; 204 } 205 206 /* Update the media status. */ 207 bmtphy_status(sc); 208 209 /* Callback if something changed. */ 210 mii_phy_update(sc, cmd); 211 return (0); 212 } 213 214 static void 215 bmtphy_status(struct mii_softc *sc) 216 { 217 struct mii_data *mii; 218 struct ifmedia_entry *ife; 219 int bmsr, bmcr, aux_csr; 220 221 mii = sc->mii_pdata; 222 ife = mii->mii_media.ifm_cur; 223 224 mii->mii_media_status = IFM_AVALID; 225 mii->mii_media_active = IFM_ETHER; 226 227 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 228 229 if (bmsr & BMSR_LINK) 230 mii->mii_media_status |= IFM_ACTIVE; 231 232 bmcr = PHY_READ(sc, MII_BMCR); 233 if (bmcr & BMCR_ISO) { 234 mii->mii_media_active |= IFM_NONE; 235 mii->mii_media_status = 0; 236 return; 237 } 238 239 if (bmcr & BMCR_LOOP) 240 mii->mii_media_active |= IFM_LOOP; 241 242 if (bmcr & BMCR_AUTOEN) { 243 /* 244 * The media status bits are only valid if autonegotiation 245 * has completed (or it's disabled). 246 */ 247 if ((bmsr & BMSR_ACOMP) == 0) { 248 /* Erg, still trying, I guess... */ 249 mii->mii_media_active |= IFM_NONE; 250 return; 251 } 252 253 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 254 if (aux_csr & AUX_CSR_SPEED) 255 mii->mii_media_active |= IFM_100_TX; 256 else 257 mii->mii_media_active |= IFM_10_T; 258 if (aux_csr & AUX_CSR_FDX) 259 mii->mii_media_active |= 260 IFM_FDX | mii_phy_flowstatus(sc); 261 else 262 mii->mii_media_active |= IFM_HDX; 263 } else 264 mii->mii_media_active = ife->ifm_media; 265 } 266 267 static void 268 bmtphy_reset(struct mii_softc *sc) 269 { 270 struct bmtphy_softc *bsc; 271 u_int16_t data; 272 273 bsc = (struct bmtphy_softc *)sc; 274 275 mii_phy_reset(sc); 276 277 if (bsc->mii_model == MII_MODEL_BROADCOM_BCM5221) { 278 /* Enable shadow register mode. */ 279 data = PHY_READ(sc, 0x1f); 280 PHY_WRITE(sc, 0x1f, data | 0x0080); 281 282 /* Enable APD (Auto PowerDetect). */ 283 data = PHY_READ(sc, MII_BMTPHY_AUX2); 284 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 285 286 /* Enable clocks across APD for Auto-MDIX functionality. */ 287 data = PHY_READ(sc, MII_BMTPHY_INTR); 288 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 289 290 /* Disable shadow register mode. */ 291 data = PHY_READ(sc, 0x1f); 292 PHY_WRITE(sc, 0x1f, data & ~0x0080); 293 } 294 } 295