1 /* $NetBSD: gentbi.c,v 1.5 2002/03/25 20:51:24 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 __KERNEL_RCSID(0, "$NetBSD: gentbi.c,v 1.5 2002/03/25 20:51:24 thorpej Exp $"); 78 79 #include <sys/param.h> 80 #include <sys/systm.h> 81 #include <sys/kernel.h> 82 #include <sys/device.h> 83 #include <sys/malloc.h> 84 #include <sys/socket.h> 85 #include <sys/errno.h> 86 87 #include <net/if.h> 88 #include <net/if_media.h> 89 90 #include <dev/mii/mii.h> 91 #include <dev/mii/miivar.h> 92 #include <dev/mii/miidevs.h> 93 94 int gentbimatch(struct device *, struct cfdata *, void *); 95 void gentbiattach(struct device *, struct device *, void *); 96 97 struct cfattach gentbi_ca = { 98 sizeof(struct mii_softc), gentbimatch, gentbiattach, 99 mii_phy_detach, mii_phy_activate 100 }; 101 102 int gentbi_service(struct mii_softc *, struct mii_data *, int); 103 void gentbi_status(struct mii_softc *); 104 105 const struct mii_phy_funcs gentbi_funcs = { 106 gentbi_service, gentbi_status, mii_phy_reset, 107 }; 108 109 int 110 gentbimatch(struct device *parent, struct cfdata *match, void *aux) 111 { 112 struct mii_attach_args *ma = aux; 113 struct mii_data *mii = ma->mii_data; 114 int bmsr, extsr; 115 116 /* 117 * We match as a generic TBI if: 118 * 119 * - There is no media in the BMSR. 120 * - EXTSR has only 1000X. 121 */ 122 bmsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_BMSR); 123 if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) 124 return (0); 125 126 extsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_EXTSR); 127 if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) 128 return (0); 129 130 if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { 131 /* 132 * We think this is a generic TBI. Return a match 133 * priority higher than ukphy, but lower than what 134 * specific drivers will return. 135 */ 136 return (2); 137 } 138 139 return (0); 140 } 141 142 void 143 gentbiattach(struct device *parent, struct device *self, void *aux) 144 { 145 struct mii_softc *sc = (struct mii_softc *)self; 146 struct mii_attach_args *ma = aux; 147 struct mii_data *mii = ma->mii_data; 148 149 printf(": Generic ten-bit interface, rev. %d\n", 150 MII_REV(ma->mii_id2)); 151 152 sc->mii_inst = mii->mii_instance; 153 sc->mii_phy = ma->mii_phyno; 154 sc->mii_funcs = &gentbi_funcs; 155 sc->mii_pdata = mii; 156 sc->mii_flags = ma->mii_flags; 157 sc->mii_anegticks = 5; 158 159 PHY_RESET(sc); 160 161 /* 162 * Mask out all media in the BMSR. We only are really interested 163 * in "auto". 164 */ 165 sc->mii_capabilities = 166 PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK; 167 if (sc->mii_capabilities & BMSR_EXTSTAT) 168 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 169 170 printf("%s: ", sc->mii_dev.dv_xname); 171 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 172 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 173 printf("no media present"); 174 else 175 mii_phy_add_media(sc); 176 printf("\n"); 177 } 178 179 int 180 gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 181 { 182 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 183 int reg; 184 185 switch (cmd) { 186 case MII_POLLSTAT: 187 /* 188 * If we're not polling our PHY instance, just return. 189 */ 190 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 191 return (0); 192 break; 193 194 case MII_MEDIACHG: 195 /* 196 * If the media indicates a different PHY instance, 197 * isolate ourselves. 198 */ 199 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 200 reg = PHY_READ(sc, MII_BMCR); 201 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 202 return (0); 203 } 204 205 /* 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 /* 216 * If we're not currently selected, just return. 217 */ 218 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 219 return (0); 220 221 if (mii_phy_tick(sc) == EJUSTRETURN) 222 return (0); 223 break; 224 225 case MII_DOWN: 226 mii_phy_down(sc); 227 return (0); 228 } 229 230 /* Update the media status. */ 231 mii_phy_status(sc); 232 233 /* Callback if something changed. */ 234 mii_phy_update(sc, cmd); 235 return (0); 236 } 237 238 void 239 gentbi_status(struct mii_softc *sc) 240 { 241 struct mii_data *mii = sc->mii_pdata; 242 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 243 int bmsr, bmcr, anlpar; 244 245 mii->mii_media_status = IFM_AVALID; 246 mii->mii_media_active = IFM_ETHER; 247 248 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 249 250 if (bmsr & BMSR_LINK) 251 mii->mii_media_status |= IFM_ACTIVE; 252 253 bmcr = PHY_READ(sc, MII_BMCR); 254 if (bmcr & BMCR_ISO) { 255 mii->mii_media_active |= IFM_NONE; 256 mii->mii_media_status = 0; 257 return; 258 } 259 260 if (bmcr & BMCR_LOOP) 261 mii->mii_media_active |= IFM_LOOP; 262 263 if (bmcr & BMCR_AUTOEN) { 264 /* 265 * The media status bits are only valid of autonegotiation 266 * has completed (or it's disabled). 267 */ 268 if ((bmsr & BMSR_ACOMP) == 0) { 269 /* Erg, still trying, I guess... */ 270 mii->mii_media_active |= IFM_NONE; 271 return; 272 } 273 274 /* 275 * The media is always 1000baseSX. Check the ANLPAR to 276 * see if we're doing full-duplex. 277 */ 278 mii->mii_media_active |= IFM_1000_SX; 279 280 anlpar = PHY_READ(sc, MII_ANLPAR); 281 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 282 (anlpar & ANLPAR_X_FD) != 0) 283 mii->mii_media_active |= IFM_FDX; 284 } else 285 mii->mii_media_active = ife->ifm_media; 286 } 287