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 into 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("$FreeBSD$"); 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 DEVMETHOD_END 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 const struct mii_phy_funcs gentbi_funcs = { 115 gentbi_service, 116 gentbi_status, 117 mii_phy_reset 118}; 119 120static int 121gentbi_probe(device_t dev) 122{ 123 device_t parent; 124 struct mii_attach_args *ma; 125 int bmsr, extsr; 126 127 parent = device_get_parent(dev); 128 ma = device_get_ivars(dev); 129 130 /* 131 * We match as a generic TBI if: 132 * 133 * - There is no media in the BMSR. 134 * - EXTSR has only 1000X. 135 */ 136 bmsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_BMSR); 137 if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) 138 return (ENXIO); 139 140 extsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_EXTSR); 141 if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) 142 return (ENXIO); 143 144 if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { 145 /* 146 * We think this is a generic TBI. Return a match 147 * priority higher than ukphy, but lower than what 148 * specific drivers will return. 149 */ 150 device_set_desc(dev, "Generic ten-bit interface"); 151 return (BUS_PROBE_LOW_PRIORITY); 152 } 153 154 return (ENXIO); 155} 156 157static int 158gentbi_attach(device_t dev) 159{ 160 struct mii_softc *sc; 161 162 sc = device_get_softc(dev); 163 164 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &gentbi_funcs, 0); 165 166 PHY_RESET(sc); 167 168 /* 169 * Mask out all media in the BMSR. We only are really interested 170 * in "auto". 171 */ 172 sc->mii_capabilities = 173 PHY_READ(sc, MII_BMSR) & sc->mii_capmask & ~BMSR_MEDIAMASK; 174 if (sc->mii_capabilities & BMSR_EXTSTAT) 175 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 176 177 device_printf(dev, " "); 178 mii_phy_add_media(sc); 179 printf("\n"); 180 181 MIIBUS_MEDIAINIT(sc->mii_dev); 182 return (0); 183} 184 185static int 186gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 187{ 188 189 switch (cmd) { 190 case MII_POLLSTAT: 191 break; 192 193 case MII_MEDIACHG: 194 /* 195 * If the interface is not up, don't do anything. 196 */ 197 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 198 break; 199 200 mii_phy_setmedia(sc); 201 break; 202 203 case MII_TICK: 204 if (mii_phy_tick(sc) == EJUSTRETURN) 205 return (0); 206 break; 207 } 208 209 /* Update the media status. */ 210 PHY_STATUS(sc); 211 212 /* Callback if something changed. */ 213 mii_phy_update(sc, cmd); 214 return (0); 215} 216 217static void 218gentbi_status(struct mii_softc *sc) 219{ 220 struct mii_data *mii = sc->mii_pdata; 221 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 222 int bmsr, bmcr, anlpar; 223 224 mii->mii_media_status = IFM_AVALID; 225 mii->mii_media_active = IFM_ETHER; 226 227 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 228 229 if (bmsr & BMSR_LINK) 230 mii->mii_media_status |= IFM_ACTIVE; 231 232 bmcr = PHY_READ(sc, MII_BMCR); 233 if (bmcr & BMCR_ISO) { 234 mii->mii_media_active |= IFM_NONE; 235 mii->mii_media_status = 0; 236 return; 237 } 238 239 if (bmcr & BMCR_LOOP) 240 mii->mii_media_active |= IFM_LOOP; 241 242 if (bmcr & BMCR_AUTOEN) { 243 /* 244 * The media status bits are only valid if autonegotiation 245 * has completed (or it's disabled). 246 */ 247 if ((bmsr & BMSR_ACOMP) == 0) { 248 /* Erg, still trying, I guess... */ 249 mii->mii_media_active |= IFM_NONE; 250 return; 251 } 252 253 /* 254 * The media is always 1000baseSX. Check the ANLPAR to 255 * see if we're doing full-duplex. 256 */ 257 mii->mii_media_active |= IFM_1000_SX; 258 anlpar = PHY_READ(sc, MII_ANLPAR); 259 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 260 (anlpar & ANLPAR_X_FD) != 0) 261 mii->mii_media_active |= 262 IFM_FDX | mii_phy_flowstatus(sc); 263 else 264 mii->mii_media_active |= IFM_HDX; 265 } else 266 mii->mii_media_active = ife->ifm_media; 267} 268