gentbi.c revision 213229
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 * 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 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57/* 58 * Driver for generic ten-bit (1000BASE-SX) interfaces, built in to 59 * many Gigabit Ethernet chips. 60 * 61 * All we have to do here is correctly report speed and duplex. 62 */ 63 64#include <sys/cdefs.h> 65__FBSDID("$FreeBSD: head/sys/dev/mii/gentbi.c 213229 2010-09-27 20:31:03Z marius $"); 66 67/* 68 * Driver for generic unknown ten-bit interfaces(1000BASE-{LX,SX} 69 * fiber interfaces). 70 */ 71 72#include <sys/param.h> 73#include <sys/systm.h> 74#include <sys/kernel.h> 75#include <sys/module.h> 76#include <sys/socket.h> 77#include <sys/errno.h> 78#include <sys/bus.h> 79 80#include <net/if.h> 81#include <net/if_media.h> 82 83#include <dev/mii/mii.h> 84#include <dev/mii/miivar.h> 85#include "miidevs.h" 86 87#include "miibus_if.h" 88 89static int gentbi_probe(device_t); 90static int gentbi_attach(device_t); 91 92static device_method_t gentbi_methods[] = { 93 /* device interface */ 94 DEVMETHOD(device_probe, gentbi_probe), 95 DEVMETHOD(device_attach, gentbi_attach), 96 DEVMETHOD(device_detach, mii_phy_detach), 97 DEVMETHOD(device_shutdown, bus_generic_shutdown), 98 {0, 0} 99}; 100 101static devclass_t gentbi_devclass; 102 103static driver_t gentbi_driver = { 104 "gentbi", 105 gentbi_methods, 106 sizeof(struct mii_softc) 107}; 108 109DRIVER_MODULE(gentbi, miibus, gentbi_driver, gentbi_devclass, 0, 0); 110 111static int gentbi_service(struct mii_softc *, struct mii_data *, int); 112static void gentbi_status(struct mii_softc *); 113 114static int 115gentbi_probe(device_t dev) 116{ 117 device_t parent; 118 struct mii_attach_args *ma; 119 int bmsr, extsr; 120 121 parent = device_get_parent(dev); 122 ma = device_get_ivars(dev); 123 124 /* 125 * We match as a generic TBI if: 126 * 127 * - There is no media in the BMSR. 128 * - EXTSR has only 1000X. 129 */ 130 bmsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_BMSR); 131 if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) 132 return (ENXIO); 133 134 extsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_EXTSR); 135 if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) 136 return (ENXIO); 137 138 if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { 139 /* 140 * We think this is a generic TBI. Return a match 141 * priority higher than ukphy, but lower than what 142 * specific drivers will return. 143 */ 144 device_set_desc(dev, "Generic ten-bit interface"); 145 return (BUS_PROBE_LOW_PRIORITY); 146 } 147 148 return (ENXIO); 149} 150 151static int 152gentbi_attach(device_t dev) 153{ 154 struct mii_softc *sc; 155 struct mii_attach_args *ma; 156 struct mii_data *mii; 157 158 sc = device_get_softc(dev); 159 ma = device_get_ivars(dev); 160 sc->mii_dev = device_get_parent(dev); 161 mii = ma->mii_data; 162 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 163 164 if (bootverbose) 165 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n", 166 MII_OUI(ma->mii_id1, ma->mii_id2), 167 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2)); 168 169 sc->mii_inst = mii->mii_instance; 170 sc->mii_phy = ma->mii_phyno; 171 sc->mii_service = gentbi_service; 172 sc->mii_pdata = mii; 173 174 mii->mii_instance++; 175 176 mii_phy_reset(sc); 177 178 /* 179 * Mask out all media in the BMSR. We only are really interested 180 * in "auto". 181 */ 182 sc->mii_capabilities = 183 PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK; 184 if (sc->mii_capabilities & BMSR_EXTSTAT) 185 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 186 187 device_printf(dev, " "); 188 mii_phy_add_media(sc); 189 printf("\n"); 190 191 MIIBUS_MEDIAINIT(sc->mii_dev); 192 return (0); 193} 194 195static int 196gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 197{ 198 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 199 int reg; 200 201 switch (cmd) { 202 case MII_POLLSTAT: 203 /* 204 * If we're not polling our PHY instance, just return. 205 */ 206 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 207 return (0); 208 break; 209 210 case MII_MEDIACHG: 211 /* 212 * If the media indicates a different PHY instance, 213 * isolate ourselves. 214 */ 215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 216 reg = PHY_READ(sc, MII_BMCR); 217 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 218 return (0); 219 } 220 221 /* 222 * If the interface is not up, don't do anything. 223 */ 224 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 225 break; 226 227 mii_phy_setmedia(sc); 228 break; 229 230 case MII_TICK: 231 /* 232 * If we're not currently selected, just return. 233 */ 234 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 235 return (0); 236 237 if (mii_phy_tick(sc) == EJUSTRETURN) 238 return (0); 239 break; 240 } 241 242 /* Update the media status. */ 243 gentbi_status(sc); 244 245 /* Callback if something changed. */ 246 mii_phy_update(sc, cmd); 247 return (0); 248} 249 250static void 251gentbi_status(struct mii_softc *sc) 252{ 253 struct mii_data *mii = sc->mii_pdata; 254 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 255 int bmsr, bmcr, anlpar; 256 257 mii->mii_media_status = IFM_AVALID; 258 mii->mii_media_active = IFM_ETHER; 259 260 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 261 262 if (bmsr & BMSR_LINK) 263 mii->mii_media_status |= IFM_ACTIVE; 264 265 bmcr = PHY_READ(sc, MII_BMCR); 266 if (bmcr & BMCR_ISO) { 267 mii->mii_media_active |= IFM_NONE; 268 mii->mii_media_status = 0; 269 return; 270 } 271 272 if (bmcr & BMCR_LOOP) 273 mii->mii_media_active |= IFM_LOOP; 274 275 if (bmcr & BMCR_AUTOEN) { 276 /* 277 * The media status bits are only valid if autonegotiation 278 * has completed (or it's disabled). 279 */ 280 if ((bmsr & BMSR_ACOMP) == 0) { 281 /* Erg, still trying, I guess... */ 282 mii->mii_media_active |= IFM_NONE; 283 return; 284 } 285 286 /* 287 * The media is always 1000baseSX. Check the ANLPAR to 288 * see if we're doing full-duplex. 289 */ 290 mii->mii_media_active |= IFM_1000_SX; 291 292 anlpar = PHY_READ(sc, MII_ANLPAR); 293 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 294 (anlpar & ANLPAR_X_FD) != 0) 295 mii->mii_media_active |= IFM_FDX; 296 } else 297 mii->mii_media_active = ife->ifm_media; 298} 299