gentbi.c revision 166263
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: head/sys/dev/mii/gentbi.c 166263 2007-01-26 17:06:02Z dwhite $"); 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 101static int gentbi_probe(device_t); 102static int gentbi_attach(device_t); 103 104static 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 113static devclass_t gentbi_devclass; 114 115static driver_t gentbi_driver = { 116 "gentbi", 117 gentbi_methods, 118 sizeof(struct mii_softc) 119}; 120 121DRIVER_MODULE(gentbi, miibus, gentbi_driver, gentbi_devclass, 0, 0); 122 123static int gentbi_service(struct mii_softc *, struct mii_data *, int); 124static void gentbi_status(struct mii_softc *); 125 126static int 127gentbi_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 163static int 164gentbi_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 sc->mii_flags |= MIIF_NOISOLATE; 186 187 mii->mii_instance++; 188 189 mii_phy_reset(sc); 190 191 /* 192 * Mask out all media in the BMSR. We only are really interested 193 * in "auto". 194 */ 195 sc->mii_capabilities = 196 PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK; 197 if (sc->mii_capabilities & BMSR_EXTSTAT) 198 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 199 200 device_printf(dev, " "); 201 mii_phy_add_media(sc); 202 printf("\n"); 203 204 MIIBUS_MEDIAINIT(sc->mii_dev); 205 return (0); 206} 207 208static int 209gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 210{ 211 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 212 int reg; 213 214 switch (cmd) { 215 case MII_POLLSTAT: 216 /* 217 * If we're not polling our PHY instance, just return. 218 */ 219 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 220 return (0); 221 break; 222 223 case MII_MEDIACHG: 224 /* 225 * If the media indicates a different PHY instance, 226 * isolate ourselves. 227 */ 228 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 229 reg = PHY_READ(sc, MII_BMCR); 230 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 231 return (0); 232 } 233 234 /* 235 * If the interface is not up, don't do anything. 236 */ 237 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 238 break; 239 240 mii_phy_setmedia(sc); 241 break; 242 243 case MII_TICK: 244 /* 245 * If we're not currently selected, just return. 246 */ 247 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 248 return (0); 249 250 if (mii_phy_tick(sc) == EJUSTRETURN) 251 return (0); 252 break; 253 } 254 255 /* Update the media status. */ 256 gentbi_status(sc); 257 258 /* Callback if something changed. */ 259 mii_phy_update(sc, cmd); 260 return (0); 261} 262 263static void 264gentbi_status(struct mii_softc *sc) 265{ 266 struct mii_data *mii = sc->mii_pdata; 267 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 268 int bmsr, bmcr, anlpar; 269 270 mii->mii_media_status = IFM_AVALID; 271 mii->mii_media_active = IFM_ETHER; 272 273 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 274 275 if (bmsr & BMSR_LINK) 276 mii->mii_media_status |= IFM_ACTIVE; 277 278 bmcr = PHY_READ(sc, MII_BMCR); 279 if (bmcr & BMCR_ISO) { 280 mii->mii_media_active |= IFM_NONE; 281 mii->mii_media_status = 0; 282 return; 283 } 284 285 if (bmcr & BMCR_LOOP) 286 mii->mii_media_active |= IFM_LOOP; 287 288 if (bmcr & BMCR_AUTOEN) { 289 /* 290 * The media status bits are only valid of autonegotiation 291 * has completed (or it's disabled). 292 */ 293 if ((bmsr & BMSR_ACOMP) == 0) { 294 /* Erg, still trying, I guess... */ 295 mii->mii_media_active |= IFM_NONE; 296 return; 297 } 298 299 /* 300 * The media is always 1000baseSX. Check the ANLPAR to 301 * see if we're doing full-duplex. 302 */ 303 mii->mii_media_active |= IFM_1000_SX; 304 305 anlpar = PHY_READ(sc, MII_ANLPAR); 306 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 307 (anlpar & ANLPAR_X_FD) != 0) 308 mii->mii_media_active |= IFM_FDX; 309 } else 310 mii->mii_media_active = ife->ifm_media; 311} 312