bmtphy.c revision 1.16
1 /* $NetBSD: bmtphy.c,v 1.16 2004/11/24 10:15:54 martin Exp $ */ 2 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Manuel Bouyer. 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 /* 70 * Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also 71 * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in 72 * the 3c905C data sheet. 73 */ 74 75 #include <sys/cdefs.h> 76 __KERNEL_RCSID(0, "$NetBSD: bmtphy.c,v 1.16 2004/11/24 10:15:54 martin Exp $"); 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/kernel.h> 81 #include <sys/device.h> 82 #include <sys/socket.h> 83 #include <sys/errno.h> 84 85 #include <net/if.h> 86 #include <net/if_media.h> 87 88 #include <dev/mii/mii.h> 89 #include <dev/mii/miivar.h> 90 #include <dev/mii/miidevs.h> 91 92 #include <dev/mii/bmtphyreg.h> 93 94 static int bmtphymatch(struct device *, struct cfdata *, void *); 95 static void bmtphyattach(struct device *, struct device *, void *); 96 97 CFATTACH_DECL(bmtphy, sizeof(struct mii_softc), 98 bmtphymatch, bmtphyattach, mii_phy_detach, mii_phy_activate); 99 100 static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 101 static void bmtphy_status(struct mii_softc *); 102 103 static const struct mii_phy_funcs bmtphy_funcs = { 104 bmtphy_service, bmtphy_status, mii_phy_reset, 105 }; 106 107 static const struct mii_phydesc bmtphys[] = { 108 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_3C905B, 109 MII_STR_xxBROADCOM_3C905B }, 110 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_3C905C, 111 MII_STR_xxBROADCOM_3C905C }, 112 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5201, 113 MII_STR_xxBROADCOM_BCM5201 }, 114 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5214, 115 MII_STR_xxBROADCOM_BCM5214 }, 116 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5221, 117 MII_STR_xxBROADCOM_BCM5221 }, 118 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM4401, 119 MII_STR_xxBROADCOM_BCM4401 }, 120 121 { 0, 0, 122 NULL }, 123 }; 124 125 static int 126 bmtphymatch(struct device *parent, struct cfdata *match, void *aux) 127 { 128 struct mii_attach_args *ma = aux; 129 130 if (mii_phy_match(ma, bmtphys) != NULL) 131 return (10); 132 133 return (0); 134 } 135 136 static void 137 bmtphyattach(struct device *parent, struct device *self, void *aux) 138 { 139 struct mii_softc *sc = (struct mii_softc *)self; 140 struct mii_attach_args *ma = aux; 141 struct mii_data *mii = ma->mii_data; 142 const struct mii_phydesc *mpd; 143 144 mpd = mii_phy_match(ma, bmtphys); 145 aprint_naive(": Media interface\n"); 146 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 147 148 sc->mii_inst = mii->mii_instance; 149 sc->mii_phy = ma->mii_phyno; 150 sc->mii_funcs = &bmtphy_funcs; 151 sc->mii_pdata = mii; 152 sc->mii_flags = ma->mii_flags; 153 sc->mii_anegticks = 5; 154 155 PHY_RESET(sc); 156 157 /* 158 * XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER? 159 */ 160 161 sc->mii_capabilities = 162 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 163 aprint_normal("%s: ", sc->mii_dev.dv_xname); 164 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 165 aprint_error("no media present"); 166 else 167 mii_phy_add_media(sc); 168 aprint_normal("\n"); 169 } 170 171 static int 172 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 173 { 174 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 175 int reg; 176 177 switch (cmd) { 178 case MII_POLLSTAT: 179 /* 180 * If we're not polling our PHY instance, just return. 181 */ 182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 183 return (0); 184 break; 185 186 case MII_MEDIACHG: 187 /* 188 * If the media indicates a different PHY instance, 189 * isolate ourselves. 190 */ 191 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 192 reg = PHY_READ(sc, MII_BMCR); 193 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 194 return (0); 195 } 196 197 /* 198 * If the interface is not up, don't do anything. 199 */ 200 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 201 break; 202 203 mii_phy_setmedia(sc); 204 break; 205 206 case MII_TICK: 207 /* 208 * If we're not currently selected, just return. 209 */ 210 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 211 return (0); 212 213 if (mii_phy_tick(sc) == EJUSTRETURN) 214 return (0); 215 break; 216 217 case MII_DOWN: 218 mii_phy_down(sc); 219 return (0); 220 } 221 222 /* Update the media status. */ 223 mii_phy_status(sc); 224 225 /* Callback if something changed. */ 226 mii_phy_update(sc, cmd); 227 return (0); 228 } 229 230 static void 231 bmtphy_status(struct mii_softc *sc) 232 { 233 struct mii_data *mii = sc->mii_pdata; 234 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 235 int bmsr, bmcr, aux_csr; 236 237 mii->mii_media_status = IFM_AVALID; 238 mii->mii_media_active = IFM_ETHER; 239 240 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 241 242 if (bmsr & BMSR_LINK) 243 mii->mii_media_status |= IFM_ACTIVE; 244 245 bmcr = PHY_READ(sc, MII_BMCR); 246 if (bmcr & BMCR_ISO) { 247 mii->mii_media_active |= IFM_NONE; 248 mii->mii_media_status = 0; 249 return; 250 } 251 252 if (bmcr & BMCR_LOOP) 253 mii->mii_media_active |= IFM_LOOP; 254 255 if (bmcr & BMCR_AUTOEN) { 256 /* 257 * The media status bits are only valid of autonegotiation 258 * has completed (or it's disabled). 259 */ 260 if ((bmsr & BMSR_ACOMP) == 0) { 261 /* Erg, still trying, I guess... */ 262 mii->mii_media_active |= IFM_NONE; 263 return; 264 } 265 266 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 267 if (aux_csr & AUX_CSR_SPEED) 268 mii->mii_media_active |= IFM_100_TX; 269 else 270 mii->mii_media_active |= IFM_10_T; 271 if (aux_csr & AUX_CSR_FDX) 272 mii->mii_media_active |= IFM_FDX; 273 } else 274 mii->mii_media_active = ife->ifm_media; 275 } 276
Indexes created Thu Sep 25 16:09:42 GMT 2025