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 89 static int gentbi_probe(device_t); 90 static int gentbi_attach(device_t); 91 92 static 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 }; 100 101 static devclass_t gentbi_devclass; 102 103 static driver_t gentbi_driver = { 104 "gentbi", 105 gentbi_methods, 106 sizeof(struct mii_softc) 107 }; 108 109 DRIVER_MODULE(gentbi, miibus, gentbi_driver, gentbi_devclass, 0, 0); 110 111 static int gentbi_service(struct mii_softc *, struct mii_data *, int); 112 static void gentbi_status(struct mii_softc *); 113 114 static int 115 gentbi_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 } 150 151 static int 152 gentbi_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_flags = miibus_get_flags(dev); 170 sc->mii_inst = mii->mii_instance++; 171 sc->mii_phy = ma->mii_phyno; 172 sc->mii_service = gentbi_service; 173 sc->mii_pdata = mii; 174 175 sc->mii_flags |= MIIF_NOMANPAUSE; 176 177 mii_phy_reset(sc); 178 179 /* 180 * Mask out all media in the BMSR. We only are really interested 181 * in "auto". 182 */ 183 sc->mii_capabilities = 184 PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK; 185 if (sc->mii_capabilities & BMSR_EXTSTAT) 186 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 187 188 device_printf(dev, " "); 189 mii_phy_add_media(sc); 190 printf("\n"); 191 192 MIIBUS_MEDIAINIT(sc->mii_dev); 193 return (0); 194 } 195 196 static int 197 gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 198 { 199 200 switch (cmd) { 201 case MII_POLLSTAT: 202 break; 203 204 case MII_MEDIACHG: 205 /* 206 * If the interface is not up, don't do anything. 207 */ 208 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 209 break; 210 211 mii_phy_setmedia(sc); 212 break; 213 214 case MII_TICK: 215 if (mii_phy_tick(sc) == EJUSTRETURN) 216 return (0); 217 break; 218 } 219 220 /* Update the media status. */ 221 gentbi_status(sc); 222 223 /* Callback if something changed. */ 224 mii_phy_update(sc, cmd); 225 return (0); 226 } 227 228 static void 229 gentbi_status(struct mii_softc *sc) 230 { 231 struct mii_data *mii = sc->mii_pdata; 232 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 233 int bmsr, bmcr, anlpar; 234 235 mii->mii_media_status = IFM_AVALID; 236 mii->mii_media_active = IFM_ETHER; 237 238 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 239 240 if (bmsr & BMSR_LINK) 241 mii->mii_media_status |= IFM_ACTIVE; 242 243 bmcr = PHY_READ(sc, MII_BMCR); 244 if (bmcr & BMCR_ISO) { 245 mii->mii_media_active |= IFM_NONE; 246 mii->mii_media_status = 0; 247 return; 248 } 249 250 if (bmcr & BMCR_LOOP) 251 mii->mii_media_active |= IFM_LOOP; 252 253 if (bmcr & BMCR_AUTOEN) { 254 /* 255 * The media status bits are only valid if autonegotiation 256 * has completed (or it's disabled). 257 */ 258 if ((bmsr & BMSR_ACOMP) == 0) { 259 /* Erg, still trying, I guess... */ 260 mii->mii_media_active |= IFM_NONE; 261 return; 262 } 263 264 /* 265 * The media is always 1000baseSX. Check the ANLPAR to 266 * see if we're doing full-duplex. 267 */ 268 mii->mii_media_active |= IFM_1000_SX; 269 anlpar = PHY_READ(sc, MII_ANLPAR); 270 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 271 (anlpar & ANLPAR_X_FD) != 0) 272 mii->mii_media_active |= 273 IFM_FDX | mii_phy_flowstatus(sc); 274 else 275 mii->mii_media_active |= IFM_HDX; 276 } else 277 mii->mii_media_active = ife->ifm_media; 278 } 279