bmtphy.c revision 1.22.16.1
1 /* $NetBSD: bmtphy.c,v 1.22.16.1 2008/06/03 20:47:23 skrll 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 1.22.16.1 2008/06/03 20:47:23 skrll 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 static void bmtphy_reset(struct mii_softc *); 103 104 static const struct mii_phy_funcs bmtphy_funcs = { 105 bmtphy_service, bmtphy_status, bmtphy_reset, 106 }; 107 108 static const struct mii_phydesc bmtphys[] = { 109 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_3C905B, 110 MII_STR_xxBROADCOM_3C905B }, 111 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_3C905C, 112 MII_STR_xxBROADCOM_3C905C }, 113 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5201, 114 MII_STR_xxBROADCOM_BCM5201 }, 115 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5214, 116 MII_STR_xxBROADCOM_BCM5214 }, 117 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5221, 118 MII_STR_xxBROADCOM_BCM5221 }, 119 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5222, 120 MII_STR_xxBROADCOM_BCM5222 }, 121 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM4401, 122 MII_STR_xxBROADCOM_BCM4401 }, 123 124 { 0, 0, 125 NULL }, 126 }; 127 128 static int 129 bmtphymatch(struct device *parent, struct cfdata *match, 130 void *aux) 131 { 132 struct mii_attach_args *ma = aux; 133 134 if (mii_phy_match(ma, bmtphys) != NULL) 135 return (10); 136 137 return (0); 138 } 139 140 static void 141 bmtphyattach(struct device *parent, struct device *self, void *aux) 142 { 143 struct mii_softc *sc = device_private(self); 144 struct mii_attach_args *ma = aux; 145 struct mii_data *mii = ma->mii_data; 146 const struct mii_phydesc *mpd; 147 148 mpd = mii_phy_match(ma, bmtphys); 149 aprint_naive(": Media interface\n"); 150 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 151 152 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 153 sc->mii_inst = mii->mii_instance; 154 sc->mii_phy = ma->mii_phyno; 155 sc->mii_funcs = &bmtphy_funcs; 156 sc->mii_pdata = mii; 157 sc->mii_flags = ma->mii_flags; 158 sc->mii_anegticks = MII_ANEGTICKS; 159 160 PHY_RESET(sc); 161 162 /* 163 * XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER? 164 */ 165 166 sc->mii_capabilities = 167 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 168 aprint_normal("%s: ", sc->mii_dev.dv_xname); 169 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 170 aprint_error("no media present"); 171 else 172 mii_phy_add_media(sc); 173 aprint_normal("\n"); 174 } 175 176 static int 177 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 178 { 179 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 180 int reg; 181 182 switch (cmd) { 183 case MII_POLLSTAT: 184 /* 185 * If we're not polling our PHY instance, just return. 186 */ 187 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 188 return (0); 189 break; 190 191 case MII_MEDIACHG: 192 /* 193 * If the media indicates a different PHY instance, 194 * isolate ourselves. 195 */ 196 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 197 reg = PHY_READ(sc, MII_BMCR); 198 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 199 return (0); 200 } 201 202 /* 203 * If the interface is not up, don't do anything. 204 */ 205 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 206 break; 207 208 mii_phy_setmedia(sc); 209 break; 210 211 case MII_TICK: 212 /* 213 * If we're not currently selected, just return. 214 */ 215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 216 return (0); 217 218 if (mii_phy_tick(sc) == EJUSTRETURN) 219 return (0); 220 break; 221 222 case MII_DOWN: 223 mii_phy_down(sc); 224 return (0); 225 } 226 227 /* Update the media status. */ 228 mii_phy_status(sc); 229 230 /* Callback if something changed. */ 231 mii_phy_update(sc, cmd); 232 return (0); 233 } 234 235 static void 236 bmtphy_status(struct mii_softc *sc) 237 { 238 struct mii_data *mii = sc->mii_pdata; 239 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 240 int bmsr, bmcr, aux_csr; 241 242 mii->mii_media_status = IFM_AVALID; 243 mii->mii_media_active = IFM_ETHER; 244 245 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 246 247 if (bmsr & BMSR_LINK) 248 mii->mii_media_status |= IFM_ACTIVE; 249 250 bmcr = PHY_READ(sc, MII_BMCR); 251 if (bmcr & BMCR_ISO) { 252 mii->mii_media_active |= IFM_NONE; 253 mii->mii_media_status = 0; 254 return; 255 } 256 257 if (bmcr & BMCR_LOOP) 258 mii->mii_media_active |= IFM_LOOP; 259 260 if (bmcr & BMCR_AUTOEN) { 261 /* 262 * The media status bits are only valid of autonegotiation 263 * has completed (or it's disabled). 264 */ 265 if ((bmsr & BMSR_ACOMP) == 0) { 266 /* Erg, still trying, I guess... */ 267 mii->mii_media_active |= IFM_NONE; 268 return; 269 } 270 271 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 272 if (aux_csr & AUX_CSR_SPEED) 273 mii->mii_media_active |= IFM_100_TX; 274 else 275 mii->mii_media_active |= IFM_10_T; 276 if (aux_csr & AUX_CSR_FDX) 277 mii->mii_media_active |= IFM_FDX; 278 else 279 mii->mii_media_active |= IFM_HDX; 280 } else 281 mii->mii_media_active = ife->ifm_media; 282 } 283 284 static void 285 bmtphy_reset(struct mii_softc *sc) 286 { 287 u_int16_t data; 288 289 mii_phy_reset(sc); 290 291 if (sc->mii_mpd_model == MII_MODEL_xxBROADCOM_BCM5221) { 292 /* Enable shadow register mode */ 293 data = PHY_READ(sc, 0x1f); 294 PHY_WRITE(sc, 0x1f, data | 0x0080); 295 296 /* Enable APD (Auto PowerDetect) */ 297 data = PHY_READ(sc, MII_BMTPHY_AUX2); 298 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 299 300 /* Enable clocks across APD for 301 * Auto-MDIX functionality */ 302 data = PHY_READ(sc, MII_BMTPHY_INTR); 303 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 304 305 /* Disable shadow register mode */ 306 data = PHY_READ(sc, 0x1f); 307 PHY_WRITE(sc, 0x1f, data & ~0x0080); 308 } 309 } 310
Indexes created Wed Oct 15 16:09:53 GMT 2025