1 /* $NetBSD: gentbi.c,v 1.15 2006/03/29 07:05:24 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 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/cdefs.h> 77 __FBSDID("$FreeBSD$"); 78 79 /* 80 * Driver for generic unknown ten-bit interfaces(1000BASE-{LX,SX} 81 * fiber interfaces). 82 */ 83 84 #include <sys/param.h> 85 #include <sys/systm.h> 86 #include <sys/kernel.h> 87 #include <sys/module.h> 88 #include <sys/socket.h> 89 #include <sys/errno.h> 90 #include <sys/bus.h> 91 92 #include <net/if.h> 93 #include <net/if_media.h> 94 95 #include <dev/mii/mii.h> 96 #include <dev/mii/miivar.h> 97 #include "miidevs.h" 98 99 #include "miibus_if.h" 100 101 static int gentbi_probe(device_t); 102 static int gentbi_attach(device_t); 103 104 static device_method_t gentbi_methods[] = { 105 /* device interface */ 106 DEVMETHOD(device_probe, gentbi_probe), 107 DEVMETHOD(device_attach, gentbi_attach), 108 DEVMETHOD(device_detach, mii_phy_detach), 109 DEVMETHOD(device_shutdown, bus_generic_shutdown), 110 {0, 0} 111 }; 112 113 static devclass_t gentbi_devclass; 114 115 static driver_t gentbi_driver = { 116 "gentbi", 117 gentbi_methods, 118 sizeof(struct mii_softc) 119 }; 120 121 DRIVER_MODULE(gentbi, miibus, gentbi_driver, gentbi_devclass, 0, 0); 122 123 static int gentbi_service(struct mii_softc *, struct mii_data *, int); 124 static void gentbi_status(struct mii_softc *); 125 126 static int 127 gentbi_probe(device_t dev) 128 { 129 device_t parent; 130 struct mii_attach_args *ma; 131 int bmsr, extsr; 132 133 parent = device_get_parent(dev); 134 ma = device_get_ivars(dev); 135 136 /* 137 * We match as a generic TBI if: 138 * 139 * - There is no media in the BMSR. 140 * - EXTSR has only 1000X. 141 */ 142 bmsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_BMSR); 143 if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) 144 return (ENXIO); 145 146 extsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_EXTSR); 147 if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) 148 return (ENXIO); 149 150 if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { 151 /* 152 * We think this is a generic TBI. Return a match 153 * priority higher than ukphy, but lower than what 154 * specific drivers will return. 155 */ 156 device_set_desc(dev, "Generic ten-bit interface"); 157 return (BUS_PROBE_LOW_PRIORITY); 158 } 159 160 return (ENXIO); 161 } 162 163 static int 164 gentbi_attach(device_t dev) 165 { 166 struct mii_softc *sc; 167 struct mii_attach_args *ma; 168 struct mii_data *mii; 169 170 sc = device_get_softc(dev); 171 ma = device_get_ivars(dev); 172 sc->mii_dev = device_get_parent(dev); 173 mii = device_get_softc(sc->mii_dev); 174 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 175 176 if (bootverbose) 177 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n", 178 MII_OUI(ma->mii_id1, ma->mii_id2), 179 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2)); 180 181 sc->mii_inst = mii->mii_instance; 182 sc->mii_phy = ma->mii_phyno; 183 sc->mii_service = gentbi_service; 184 sc->mii_pdata = mii; 185 186 mii->mii_instance++; 187 188 mii_phy_reset(sc); 189 190 /* 191 * Mask out all media in the BMSR. We only are really interested 192 * in "auto". 193 */ 194 sc->mii_capabilities = 195 PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK; 196 if (sc->mii_capabilities & BMSR_EXTSTAT) 197 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 198 199 device_printf(dev, " "); 200 mii_phy_add_media(sc); 201 printf("\n"); 202 203 MIIBUS_MEDIAINIT(sc->mii_dev); 204 return (0); 205 } 206 207 static int 208 gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 209 { 210 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 211 int reg; 212 213 switch (cmd) { 214 case MII_POLLSTAT: 215 /* 216 * If we're not polling our PHY instance, just return. 217 */ 218 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 219 return (0); 220 break; 221 222 case MII_MEDIACHG: 223 /* 224 * If the media indicates a different PHY instance, 225 * isolate ourselves. 226 */ 227 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 228 reg = PHY_READ(sc, MII_BMCR); 229 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 230 return (0); 231 } 232 233 /* 234 * If the interface is not up, don't do anything. 235 */ 236 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 237 break; 238 239 mii_phy_setmedia(sc); 240 break; 241 242 case MII_TICK: 243 /* 244 * If we're not currently selected, just return. 245 */ 246 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 247 return (0); 248 249 if (mii_phy_tick(sc) == EJUSTRETURN) 250 return (0); 251 break; 252 } 253 254 /* Update the media status. */ 255 gentbi_status(sc); 256 257 /* Callback if something changed. */ 258 mii_phy_update(sc, cmd); 259 return (0); 260 } 261 262 static void 263 gentbi_status(struct mii_softc *sc) 264 { 265 struct mii_data *mii = sc->mii_pdata; 266 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 267 int bmsr, bmcr, anlpar; 268 269 mii->mii_media_status = IFM_AVALID; 270 mii->mii_media_active = IFM_ETHER; 271 272 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 273 274 if (bmsr & BMSR_LINK) 275 mii->mii_media_status |= IFM_ACTIVE; 276 277 bmcr = PHY_READ(sc, MII_BMCR); 278 if (bmcr & BMCR_ISO) { 279 mii->mii_media_active |= IFM_NONE; 280 mii->mii_media_status = 0; 281 return; 282 } 283 284 if (bmcr & BMCR_LOOP) 285 mii->mii_media_active |= IFM_LOOP; 286 287 if (bmcr & BMCR_AUTOEN) { 288 /* 289 * The media status bits are only valid if autonegotiation 290 * has completed (or it's disabled). 291 */ 292 if ((bmsr & BMSR_ACOMP) == 0) { 293 /* Erg, still trying, I guess... */ 294 mii->mii_media_active |= IFM_NONE; 295 return; 296 } 297 298 /* 299 * The media is always 1000baseSX. Check the ANLPAR to 300 * see if we're doing full-duplex. 301 */ 302 mii->mii_media_active |= IFM_1000_SX; 303 304 anlpar = PHY_READ(sc, MII_ANLPAR); 305 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 306 (anlpar & ANLPAR_X_FD) != 0) 307 mii->mii_media_active |= IFM_FDX; 308 } else 309 mii->mii_media_active = ife->ifm_media; 310 } 311