brgphy.c revision 1.6
1 /* $NetBSD: brgphy.c,v 1.6 2002/03/25 20:51:24 thorpej 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 BCM5400 Gig-E PHY. 71 * 72 * Programming information for this PHY was gleaned from FreeBSD 73 * (they were apparently able to get a datasheet from Broadcom). 74 */ 75 76 #include <sys/cdefs.h> 77 __KERNEL_RCSID(0, "$NetBSD: brgphy.c,v 1.6 2002/03/25 20:51:24 thorpej Exp $"); 78 79 #include <sys/param.h> 80 #include <sys/systm.h> 81 #include <sys/kernel.h> 82 #include <sys/device.h> 83 #include <sys/malloc.h> 84 #include <sys/socket.h> 85 #include <sys/errno.h> 86 87 #include <net/if.h> 88 #include <net/if_media.h> 89 90 #include <dev/mii/mii.h> 91 #include <dev/mii/miivar.h> 92 #include <dev/mii/miidevs.h> 93 94 #include <dev/mii/brgphyreg.h> 95 96 int brgphymatch(struct device *, struct cfdata *, void *); 97 void brgphyattach(struct device *, struct device *, void *); 98 99 struct cfattach brgphy_ca = { 100 sizeof(struct mii_softc), brgphymatch, brgphyattach, 101 mii_phy_detach, mii_phy_activate 102 }; 103 104 int brgphy_service(struct mii_softc *, struct mii_data *, int); 105 void brgphy_status(struct mii_softc *); 106 107 const struct mii_phy_funcs brgphy_funcs = { 108 brgphy_service, brgphy_status, mii_phy_reset, 109 }; 110 111 const struct mii_phydesc brgphys[] = { 112 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5400, 113 MII_STR_BROADCOM_BCM5400 }, 114 115 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5401, 116 MII_STR_BROADCOM_BCM5401 }, 117 118 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5411, 119 MII_STR_BROADCOM_BCM5411 }, 120 121 { 0, 0, 122 NULL }, 123 }; 124 125 int 126 brgphymatch(struct device *parent, struct cfdata *match, void *aux) 127 { 128 struct mii_attach_args *ma = aux; 129 130 if (mii_phy_match(ma, brgphys) != NULL) 131 return (10); 132 133 return (0); 134 } 135 136 void 137 brgphyattach(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, brgphys); 145 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 146 147 sc->mii_inst = mii->mii_instance; 148 sc->mii_phy = ma->mii_phyno; 149 sc->mii_funcs = &brgphy_funcs; 150 sc->mii_pdata = mii; 151 sc->mii_flags = ma->mii_flags; 152 sc->mii_anegticks = 5; 153 154 PHY_RESET(sc); 155 156 sc->mii_capabilities = 157 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 158 if (sc->mii_capabilities & BMSR_EXTSTAT) 159 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 160 161 printf("%s: ", sc->mii_dev.dv_xname); 162 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 163 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 164 printf("no media present"); 165 else 166 mii_phy_add_media(sc); 167 printf("\n"); 168 } 169 170 int 171 brgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 172 { 173 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 174 int reg; 175 176 switch (cmd) { 177 case MII_POLLSTAT: 178 /* 179 * If we're not polling our PHY instance, just return. 180 */ 181 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 182 return (0); 183 break; 184 185 case MII_MEDIACHG: 186 /* 187 * If the media indicates a different PHY instance, 188 * isolate ourselves. 189 */ 190 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 191 reg = PHY_READ(sc, MII_BMCR); 192 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 193 return (0); 194 } 195 196 /* 197 * If the interface is not up, don't do anything. 198 */ 199 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 200 break; 201 202 mii_phy_setmedia(sc); 203 break; 204 205 case MII_TICK: 206 /* 207 * If we're not currently selected, just return. 208 */ 209 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 210 return (0); 211 212 if (mii_phy_tick(sc) == EJUSTRETURN) 213 return (0); 214 break; 215 216 case MII_DOWN: 217 mii_phy_down(sc); 218 return (0); 219 } 220 221 /* Update the media status. */ 222 mii_phy_status(sc); 223 224 /* Callback if something changed. */ 225 mii_phy_update(sc, cmd); 226 return (0); 227 } 228 229 void 230 brgphy_status(struct mii_softc *sc) 231 { 232 struct mii_data *mii = sc->mii_pdata; 233 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 234 int bmcr, auxsts, gtsr; 235 236 mii->mii_media_status = IFM_AVALID; 237 mii->mii_media_active = IFM_ETHER; 238 239 auxsts = PHY_READ(sc, BRGPHY_MII_AUXSTS); 240 241 if (auxsts & BRGPHY_AUXSTS_LINK) 242 mii->mii_media_status |= IFM_ACTIVE; 243 244 bmcr = PHY_READ(sc, MII_BMCR); 245 if (bmcr & BMCR_ISO) { 246 mii->mii_media_active |= IFM_NONE; 247 mii->mii_media_status = 0; 248 return; 249 } 250 251 if (bmcr & BMCR_LOOP) 252 mii->mii_media_active |= IFM_LOOP; 253 254 if (bmcr & BMCR_AUTOEN) { 255 /* 256 * The media status bits are only valid of autonegotiation 257 * has completed (or it's disabled). 258 */ 259 if ((auxsts & BRGPHY_AUXSTS_ACOMP) == 0) { 260 /* Erg, still trying, I guess... */ 261 mii->mii_media_active |= IFM_NONE; 262 return; 263 } 264 265 switch (auxsts & BRGPHY_AUXSTS_AN_RES) { 266 case BRGPHY_RES_1000FD: 267 mii->mii_media_active |= IFM_1000_T|IFM_FDX; 268 gtsr = PHY_READ(sc, MII_100T2SR); 269 if (gtsr & GTSR_MS_RES) 270 mii->mii_media_active |= IFM_ETH_MASTER; 271 break; 272 273 case BRGPHY_RES_1000HD: 274 mii->mii_media_active |= IFM_1000_T; 275 gtsr = PHY_READ(sc, MII_100T2SR); 276 if (gtsr & GTSR_MS_RES) 277 mii->mii_media_active |= IFM_ETH_MASTER; 278 break; 279 280 case BRGPHY_RES_100FD: 281 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 282 break; 283 284 case BRGPHY_RES_100T4: 285 mii->mii_media_active |= IFM_100_T4; 286 break; 287 288 case BRGPHY_RES_100HD: 289 mii->mii_media_active |= IFM_100_TX; 290 break; 291 292 case BRGPHY_RES_10FD: 293 mii->mii_media_active |= IFM_10_T|IFM_FDX; 294 break; 295 296 case BRGPHY_RES_10HD: 297 mii->mii_media_active |= IFM_10_T; 298 break; 299 300 default: 301 mii->mii_media_active |= IFM_NONE; 302 mii->mii_media_status = 0; 303 } 304 } else 305 mii->mii_media_active = ife->ifm_media; 306 } 307
Indexes created Wed Sep 24 05:09:52 GMT 2025