gentbi.c revision 1.2
1 /* $NetBSD: gentbi.c,v 1.2 2001/07/25 22:00:43 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 generic ten-bit (1000BASE-SX) interfaces, built in to 71 * many Gigabit Ethernet chips. 72 * 73 * All we have to do here is correctly report speed and duplex. 74 */ 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/kernel.h> 79 #include <sys/device.h> 80 #include <sys/malloc.h> 81 #include <sys/socket.h> 82 #include <sys/errno.h> 83 84 #include <net/if.h> 85 #include <net/if_media.h> 86 87 #include <dev/mii/mii.h> 88 #include <dev/mii/miivar.h> 89 #include <dev/mii/miidevs.h> 90 91 int gentbimatch __P((struct device *, struct cfdata *, void *)); 92 void gentbiattach __P((struct device *, struct device *, void *)); 93 94 struct cfattach gentbi_ca = { 95 sizeof(struct mii_softc), gentbimatch, gentbiattach, 96 mii_phy_detach, mii_phy_activate 97 }; 98 99 int gentbi_service __P((struct mii_softc *, struct mii_data *, int)); 100 void gentbi_status __P((struct mii_softc *)); 101 102 const struct mii_phy_funcs gentbi_funcs = { 103 gentbi_service, gentbi_status, mii_phy_reset, 104 }; 105 106 int 107 gentbimatch(parent, match, aux) 108 struct device *parent; 109 struct cfdata *match; 110 void *aux; 111 { 112 struct mii_attach_args *ma = aux; 113 struct mii_data *mii = ma->mii_data; 114 int bmsr, extsr; 115 116 /* 117 * We match as a generic TBI if: 118 * 119 * - There is no media in the BMSR. 120 * - EXTSR has only 1000X. 121 */ 122 bmsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_BMSR); 123 if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) 124 return (0); 125 126 extsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_EXTSR); 127 if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) 128 return (0); 129 130 if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { 131 /* 132 * We think this is a generic TBI. Return a match 133 * priority higher than ukphy, but lower than what 134 * specific drivers will return. 135 */ 136 return (2); 137 } 138 139 return (0); 140 } 141 142 void 143 gentbiattach(parent, self, aux) 144 struct device *parent, *self; 145 void *aux; 146 { 147 struct mii_softc *sc = (struct mii_softc *)self; 148 struct mii_attach_args *ma = aux; 149 struct mii_data *mii = ma->mii_data; 150 151 printf(": Generic ten-bit interface, rev. %d\n", 152 MII_REV(ma->mii_id2)); 153 154 sc->mii_inst = mii->mii_instance; 155 sc->mii_phy = ma->mii_phyno; 156 sc->mii_funcs = &gentbi_funcs; 157 sc->mii_pdata = mii; 158 sc->mii_flags = mii->mii_flags; 159 sc->mii_anegticks = 5; 160 161 PHY_RESET(sc); 162 163 /* 164 * Mask out all media in the BMSR. We only are really interested 165 * in "auto". 166 */ 167 sc->mii_capabilities = 168 PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK; 169 if (sc->mii_capabilities & BMSR_EXTSTAT) 170 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 171 172 printf("%s: ", sc->mii_dev.dv_xname); 173 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 174 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 175 printf("no media present"); 176 else 177 mii_phy_add_media(sc); 178 printf("\n"); 179 } 180 181 int 182 gentbi_service(sc, mii, cmd) 183 struct mii_softc *sc; 184 struct mii_data *mii; 185 int cmd; 186 { 187 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 188 int reg; 189 190 switch (cmd) { 191 case MII_POLLSTAT: 192 /* 193 * If we're not polling our PHY instance, just return. 194 */ 195 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 196 return (0); 197 break; 198 199 case MII_MEDIACHG: 200 /* 201 * If the media indicates a different PHY instance, 202 * isolate ourselves. 203 */ 204 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 205 reg = PHY_READ(sc, MII_BMCR); 206 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 207 return (0); 208 } 209 210 /* 211 * If the interface is not up, don't do anything. 212 */ 213 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 214 break; 215 216 mii_phy_setmedia(sc); 217 break; 218 219 case MII_TICK: 220 /* 221 * If we're not currently selected, just return. 222 */ 223 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 224 return (0); 225 226 if (mii_phy_tick(sc) == EJUSTRETURN) 227 return (0); 228 break; 229 230 case MII_DOWN: 231 mii_phy_down(sc); 232 return (0); 233 } 234 235 /* Update the media status. */ 236 mii_phy_status(sc); 237 238 /* Callback if something changed. */ 239 mii_phy_update(sc, cmd); 240 return (0); 241 } 242 243 void 244 gentbi_status(sc) 245 struct mii_softc *sc; 246 { 247 struct mii_data *mii = sc->mii_pdata; 248 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 249 int bmsr, bmcr, anlpar; 250 251 mii->mii_media_status = IFM_AVALID; 252 mii->mii_media_active = IFM_ETHER; 253 254 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 255 256 if (bmsr & BMSR_LINK) 257 mii->mii_media_status |= IFM_ACTIVE; 258 259 bmcr = PHY_READ(sc, MII_BMCR); 260 if (bmcr & BMCR_ISO) { 261 mii->mii_media_active |= IFM_NONE; 262 mii->mii_media_status = 0; 263 return; 264 } 265 266 if (bmcr & BMCR_LOOP) 267 mii->mii_media_active |= IFM_LOOP; 268 269 if (bmcr & BMCR_AUTOEN) { 270 /* 271 * The media status bits are only valid of autonegotiation 272 * has completed (or it's disabled). 273 */ 274 if ((bmsr & BMSR_ACOMP) == 0) { 275 /* Erg, still trying, I guess... */ 276 mii->mii_media_active |= IFM_NONE; 277 return; 278 } 279 280 /* 281 * The media is always 1000baseSX. Check the ANLPAR to 282 * see if we're doing full-duplex. 283 */ 284 mii->mii_media_active |= IFM_1000_SX; 285 286 anlpar = PHY_READ(sc, MII_ANLPAR); 287 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 288 (anlpar & ANLPAR_X_FD) != 0) 289 mii->mii_media_active |= IFM_FDX; 290 } else 291 mii->mii_media_active = ife->ifm_media; 292 } 293
Indexes created Sat Oct 25 10:09:55 GMT 2025