1 /* $NetBSD: gentbi.c,v 1.15 2006/03/29 07:05:24 thorpej Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 11 * NASA Ames Research Center. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 50 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 51 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 52 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 53 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 54 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 55 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 56 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 57 */ 58 59 /* 60 * Driver for generic ten-bit (1000BASE-SX) interfaces, built into 61 * many Gigabit Ethernet chips. 62 * 63 * All we have to do here is correctly report speed and duplex. 64 */ 65 66 #include <sys/cdefs.h> 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 DEVMETHOD_END 99 }; 100 101 static driver_t gentbi_driver = { 102 "gentbi", 103 gentbi_methods, 104 sizeof(struct mii_softc) 105 }; 106 107 DRIVER_MODULE(gentbi, miibus, gentbi_driver, 0, 0); 108 109 static int gentbi_service(struct mii_softc *, struct mii_data *, int); 110 static void gentbi_status(struct mii_softc *); 111 112 static const struct mii_phy_funcs gentbi_funcs = { 113 gentbi_service, 114 gentbi_status, 115 mii_phy_reset 116 }; 117 118 static int 119 gentbi_probe(device_t dev) 120 { 121 device_t parent; 122 struct mii_attach_args *ma; 123 int bmsr, extsr; 124 125 parent = device_get_parent(dev); 126 ma = device_get_ivars(dev); 127 128 /* 129 * We match as a generic TBI if: 130 * 131 * - There is no media in the BMSR. 132 * - EXTSR has only 1000X. 133 */ 134 bmsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_BMSR); 135 if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) 136 return (ENXIO); 137 138 extsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_EXTSR); 139 if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) 140 return (ENXIO); 141 142 if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { 143 /* 144 * We think this is a generic TBI. Return a match 145 * priority higher than ukphy, but lower than what 146 * specific drivers will return. 147 */ 148 device_set_desc(dev, "Generic ten-bit interface"); 149 return (BUS_PROBE_LOW_PRIORITY); 150 } 151 152 return (ENXIO); 153 } 154 155 static int 156 gentbi_attach(device_t dev) 157 { 158 struct mii_softc *sc; 159 160 sc = device_get_softc(dev); 161 162 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &gentbi_funcs, 0); 163 164 PHY_RESET(sc); 165 166 /* 167 * Mask out all media in the BMSR. We only are really interested 168 * in "auto". 169 */ 170 sc->mii_capabilities = 171 PHY_READ(sc, MII_BMSR) & sc->mii_capmask & ~BMSR_MEDIAMASK; 172 if (sc->mii_capabilities & BMSR_EXTSTAT) 173 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 174 175 device_printf(dev, " "); 176 mii_phy_add_media(sc); 177 printf("\n"); 178 179 MIIBUS_MEDIAINIT(sc->mii_dev); 180 return (0); 181 } 182 183 static int 184 gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 185 { 186 187 switch (cmd) { 188 case MII_POLLSTAT: 189 break; 190 191 case MII_MEDIACHG: 192 mii_phy_setmedia(sc); 193 break; 194 195 case MII_TICK: 196 if (mii_phy_tick(sc) == EJUSTRETURN) 197 return (0); 198 break; 199 } 200 201 /* Update the media status. */ 202 PHY_STATUS(sc); 203 204 /* Callback if something changed. */ 205 mii_phy_update(sc, cmd); 206 return (0); 207 } 208 209 static void 210 gentbi_status(struct mii_softc *sc) 211 { 212 struct mii_data *mii = sc->mii_pdata; 213 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 214 int bmsr, bmcr, anlpar; 215 216 mii->mii_media_status = IFM_AVALID; 217 mii->mii_media_active = IFM_ETHER; 218 219 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 220 221 if (bmsr & BMSR_LINK) 222 mii->mii_media_status |= IFM_ACTIVE; 223 224 bmcr = PHY_READ(sc, MII_BMCR); 225 if (bmcr & BMCR_ISO) { 226 mii->mii_media_active |= IFM_NONE; 227 mii->mii_media_status = 0; 228 return; 229 } 230 231 if (bmcr & BMCR_LOOP) 232 mii->mii_media_active |= IFM_LOOP; 233 234 if (bmcr & BMCR_AUTOEN) { 235 /* 236 * The media status bits are only valid if autonegotiation 237 * has completed (or it's disabled). 238 */ 239 if ((bmsr & BMSR_ACOMP) == 0) { 240 /* Erg, still trying, I guess... */ 241 mii->mii_media_active |= IFM_NONE; 242 return; 243 } 244 245 /* 246 * The media is always 1000baseSX. Check the ANLPAR to 247 * see if we're doing full-duplex. 248 */ 249 mii->mii_media_active |= IFM_1000_SX; 250 anlpar = PHY_READ(sc, MII_ANLPAR); 251 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 252 (anlpar & ANLPAR_X_FD) != 0) 253 mii->mii_media_active |= 254 IFM_FDX | mii_phy_flowstatus(sc); 255 else 256 mii->mii_media_active |= IFM_HDX; 257 } else 258 mii->mii_media_active = ife->ifm_media; 259 } 260