bmtphy.c revision 1.29
1 /* $NetBSD: bmtphy.c,v 1.29 2009/01/18 10:00:51 mrg 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by Manuel Bouyer. 47 * 4. The name of the author may not be used to endorse or promote products 48 * derived from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 54 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 55 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 59 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62 /* 63 * Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also 64 * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in 65 * the 3c905C data sheet. 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: bmtphy.c,v 1.29 2009/01/18 10:00:51 mrg Exp $"); 70 71 #include <sys/param.h> 72 #include <sys/systm.h> 73 #include <sys/kernel.h> 74 #include <sys/device.h> 75 #include <sys/socket.h> 76 #include <sys/errno.h> 77 78 #include <net/if.h> 79 #include <net/if_media.h> 80 81 #include <dev/mii/mii.h> 82 #include <dev/mii/miivar.h> 83 #include <dev/mii/miidevs.h> 84 85 #include <dev/mii/bmtphyreg.h> 86 87 static int bmtphymatch(device_t, cfdata_t, void *); 88 static void bmtphyattach(device_t, device_t, void *); 89 90 CFATTACH_DECL_NEW(bmtphy, sizeof(struct mii_softc), 91 bmtphymatch, bmtphyattach, mii_phy_detach, mii_phy_activate); 92 93 static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 94 static void bmtphy_status(struct mii_softc *); 95 static void bmtphy_reset(struct mii_softc *); 96 97 static const struct mii_phy_funcs bmtphy_funcs = { 98 bmtphy_service, bmtphy_status, bmtphy_reset, 99 }; 100 101 static const struct mii_phydesc bmtphys[] = { 102 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_3C905B, 103 MII_STR_xxBROADCOM_3C905B }, 104 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_3C905C, 105 MII_STR_xxBROADCOM_3C905C }, 106 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5201, 107 MII_STR_xxBROADCOM_BCM5201 }, 108 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5214, 109 MII_STR_xxBROADCOM_BCM5214 }, 110 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5221, 111 MII_STR_xxBROADCOM_BCM5221 }, 112 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5222, 113 MII_STR_xxBROADCOM_BCM5222 }, 114 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM4401, 115 MII_STR_xxBROADCOM_BCM4401 }, 116 117 { 0, 0, 118 NULL }, 119 }; 120 121 static int 122 bmtphymatch(device_t parent, cfdata_t match, void *aux) 123 { 124 struct mii_attach_args *ma = aux; 125 126 if (mii_phy_match(ma, bmtphys) != NULL) 127 return (10); 128 129 return (0); 130 } 131 132 static void 133 bmtphyattach(device_t parent, device_t self, void *aux) 134 { 135 struct mii_softc *sc = device_private(self); 136 struct mii_attach_args *ma = aux; 137 struct mii_data *mii = ma->mii_data; 138 const struct mii_phydesc *mpd; 139 140 mpd = mii_phy_match(ma, bmtphys); 141 aprint_naive(": Media interface\n"); 142 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 143 144 sc->mii_dev = self; 145 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 146 sc->mii_inst = mii->mii_instance; 147 sc->mii_phy = ma->mii_phyno; 148 sc->mii_funcs = &bmtphy_funcs; 149 sc->mii_pdata = mii; 150 sc->mii_flags = ma->mii_flags; 151 sc->mii_anegticks = MII_ANEGTICKS; 152 153 PHY_RESET(sc); 154 155 /* 156 * XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER? 157 */ 158 159 sc->mii_capabilities = 160 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 161 aprint_normal_dev(self, ""); 162 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 163 aprint_error("no media present"); 164 else 165 mii_phy_add_media(sc); 166 aprint_normal("\n"); 167 } 168 169 static int 170 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 171 { 172 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 173 int reg; 174 175 switch (cmd) { 176 case MII_POLLSTAT: 177 /* 178 * If we're not polling our PHY instance, just return. 179 */ 180 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 181 return (0); 182 break; 183 184 case MII_MEDIACHG: 185 /* 186 * If the media indicates a different PHY instance, 187 * isolate ourselves. 188 */ 189 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 190 reg = PHY_READ(sc, MII_BMCR); 191 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 192 return (0); 193 } 194 195 /* 196 * If the interface is not up, don't do anything. 197 */ 198 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 199 break; 200 201 mii_phy_setmedia(sc); 202 break; 203 204 case MII_TICK: 205 /* 206 * If we're not currently selected, just return. 207 */ 208 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 209 return (0); 210 211 if (mii_phy_tick(sc) == EJUSTRETURN) 212 return (0); 213 break; 214 215 case MII_DOWN: 216 mii_phy_down(sc); 217 return (0); 218 } 219 220 /* Update the media status. */ 221 mii_phy_status(sc); 222 223 /* Callback if something changed. */ 224 mii_phy_update(sc, cmd); 225 return (0); 226 } 227 228 static void 229 bmtphy_status(struct mii_softc *sc) 230 { 231 struct mii_data *mii = sc->mii_pdata; 232 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 233 int bmsr, bmcr, aux_csr; 234 235 mii->mii_media_status = IFM_AVALID; 236 mii->mii_media_active = IFM_ETHER; 237 238 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 239 240 if (bmsr & BMSR_LINK) 241 mii->mii_media_status |= IFM_ACTIVE; 242 243 bmcr = PHY_READ(sc, MII_BMCR); 244 if (bmcr & BMCR_ISO) { 245 mii->mii_media_active |= IFM_NONE; 246 mii->mii_media_status = 0; 247 return; 248 } 249 250 if (bmcr & BMCR_LOOP) 251 mii->mii_media_active |= IFM_LOOP; 252 253 if (bmcr & BMCR_AUTOEN) { 254 /* 255 * The media status bits are only valid of autonegotiation 256 * has completed (or it's disabled). 257 */ 258 if ((bmsr & BMSR_ACOMP) == 0) { 259 /* Erg, still trying, I guess... */ 260 mii->mii_media_active |= IFM_NONE; 261 return; 262 } 263 264 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 265 if (aux_csr & AUX_CSR_SPEED) 266 mii->mii_media_active |= IFM_100_TX; 267 else 268 mii->mii_media_active |= IFM_10_T; 269 if (aux_csr & AUX_CSR_FDX) 270 mii->mii_media_active |= IFM_FDX; 271 else 272 mii->mii_media_active |= IFM_HDX; 273 274 if (mii->mii_media_active & IFM_FDX) 275 mii->mii_media_active |= mii_phy_flowstatus(sc); 276 } else 277 mii->mii_media_active = ife->ifm_media; 278 } 279 280 static void 281 bmtphy_reset(struct mii_softc *sc) 282 { 283 u_int16_t data; 284 285 mii_phy_reset(sc); 286 287 if (sc->mii_mpd_model == MII_MODEL_xxBROADCOM_BCM5221) { 288 /* Enable shadow register mode */ 289 data = PHY_READ(sc, 0x1f); 290 PHY_WRITE(sc, 0x1f, data | 0x0080); 291 292 /* Enable APD (Auto PowerDetect) */ 293 data = PHY_READ(sc, MII_BMTPHY_AUX2); 294 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 295 296 /* Enable clocks across APD for 297 * Auto-MDIX functionality */ 298 data = PHY_READ(sc, MII_BMTPHY_INTR); 299 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 300 301 /* Disable shadow register mode */ 302 data = PHY_READ(sc, 0x1f); 303 PHY_WRITE(sc, 0x1f, data & ~0x0080); 304 } 305 } 306
Indexes created Thu Sep 25 16:09:42 GMT 2025