gentbi.c revision 1.18.24.1
1 /* $NetBSD: gentbi.c,v 1.18.24.1 2008/01/09 01:53:19 matt 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 1.18.24.1 2008/01/09 01:53:19 matt 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/socket.h> 84 #include <sys/errno.h> 85 86 #include <net/if.h> 87 #include <net/if_media.h> 88 89 #include <dev/mii/mii.h> 90 #include <dev/mii/miivar.h> 91 #include <dev/mii/miidevs.h> 92 93 static int gentbimatch(struct device *, struct cfdata *, void *); 94 static void gentbiattach(struct device *, struct device *, void *); 95 96 CFATTACH_DECL(gentbi, sizeof(struct mii_softc), 97 gentbimatch, gentbiattach, mii_phy_detach, mii_phy_activate); 98 99 static int gentbi_service(struct mii_softc *, struct mii_data *, int); 100 static void gentbi_status(struct mii_softc *); 101 102 static const struct mii_phy_funcs gentbi_funcs = { 103 gentbi_service, gentbi_status, mii_phy_reset, 104 }; 105 106 static int 107 gentbimatch(struct device *parent, struct cfdata *match, void *aux) 108 { 109 struct mii_attach_args *ma = aux; 110 struct mii_data *mii = ma->mii_data; 111 int bmsr, extsr; 112 113 /* 114 * We match as a generic TBI if: 115 * 116 * - There is no media in the BMSR. 117 * - EXTSR has only 1000X. 118 */ 119 bmsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_BMSR); 120 if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) 121 return (0); 122 123 extsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_EXTSR); 124 if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) 125 return (0); 126 127 if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { 128 /* 129 * We think this is a generic TBI. Return a match 130 * priority higher than ukphy, but lower than what 131 * specific drivers will return. 132 */ 133 return (2); 134 } 135 136 return (0); 137 } 138 139 static void 140 gentbiattach(struct device *parent, struct device *self, void *aux) 141 { 142 struct mii_softc *sc = device_private(self); 143 struct mii_attach_args *ma = aux; 144 struct mii_data *mii = ma->mii_data; 145 146 aprint_naive(": Media interface\n"); 147 aprint_normal(": Generic ten-bit interface, rev. %d\n", 148 MII_REV(ma->mii_id2)); 149 150 sc->mii_inst = mii->mii_instance; 151 sc->mii_phy = ma->mii_phyno; 152 sc->mii_funcs = &gentbi_funcs; 153 sc->mii_pdata = mii; 154 sc->mii_flags = ma->mii_flags; 155 sc->mii_anegticks = MII_ANEGTICKS; 156 157 PHY_RESET(sc); 158 159 /* 160 * Mask out all media in the BMSR. We only are really interested 161 * in "auto". 162 */ 163 sc->mii_capabilities = 164 PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK; 165 if (sc->mii_capabilities & BMSR_EXTSTAT) 166 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 167 168 aprint_normal("%s: ", sc->mii_dev.dv_xname); 169 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 170 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 171 aprint_error("no media present"); 172 else 173 mii_phy_add_media(sc); 174 aprint_normal("\n"); 175 176 if (!pmf_device_register(self, NULL, mii_phy_resume)) 177 aprint_error_dev(self, "couldn't establish power handler\n"); 178 } 179 180 static int 181 gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 182 { 183 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 184 int reg; 185 186 switch (cmd) { 187 case MII_POLLSTAT: 188 /* 189 * If we're not polling our PHY instance, just return. 190 */ 191 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 192 return (0); 193 break; 194 195 case MII_MEDIACHG: 196 /* 197 * If the media indicates a different PHY instance, 198 * isolate ourselves. 199 */ 200 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 201 reg = PHY_READ(sc, MII_BMCR); 202 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 203 return (0); 204 } 205 206 /* 207 * If the interface is not up, don't do anything. 208 */ 209 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 210 break; 211 212 mii_phy_setmedia(sc); 213 break; 214 215 case MII_TICK: 216 /* 217 * If we're not currently selected, just return. 218 */ 219 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 220 return (0); 221 222 if (mii_phy_tick(sc) == EJUSTRETURN) 223 return (0); 224 break; 225 226 case MII_DOWN: 227 mii_phy_down(sc); 228 return (0); 229 } 230 231 /* Update the media status. */ 232 mii_phy_status(sc); 233 234 /* Callback if something changed. */ 235 mii_phy_update(sc, cmd); 236 return (0); 237 } 238 239 static void 240 gentbi_status(struct mii_softc *sc) 241 { 242 struct mii_data *mii = sc->mii_pdata; 243 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 244 int bmsr, bmcr, anlpar; 245 246 mii->mii_media_status = IFM_AVALID; 247 mii->mii_media_active = IFM_ETHER; 248 249 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 250 251 if (bmsr & BMSR_LINK) 252 mii->mii_media_status |= IFM_ACTIVE; 253 254 bmcr = PHY_READ(sc, MII_BMCR); 255 if (bmcr & BMCR_ISO) { 256 mii->mii_media_active |= IFM_NONE; 257 mii->mii_media_status = 0; 258 return; 259 } 260 261 if (bmcr & BMCR_LOOP) 262 mii->mii_media_active |= IFM_LOOP; 263 264 if (bmcr & BMCR_AUTOEN) { 265 /* 266 * The media status bits are only valid of autonegotiation 267 * has completed (or it's disabled). 268 */ 269 if ((bmsr & BMSR_ACOMP) == 0) { 270 /* Erg, still trying, I guess... */ 271 mii->mii_media_active |= IFM_NONE; 272 return; 273 } 274 275 /* 276 * The media is always 1000baseSX. Check the ANLPAR to 277 * see if we're doing full-duplex. 278 */ 279 mii->mii_media_active |= IFM_1000_SX; 280 281 anlpar = PHY_READ(sc, MII_ANLPAR); 282 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 283 (anlpar & ANLPAR_X_FD) != 0) 284 mii->mii_media_active |= 285 IFM_FDX | mii_phy_flowstatus(sc); 286 } else 287 mii->mii_media_active = ife->ifm_media; 288 } 289
Indexes created Wed Oct 29 18:09:52 GMT 2025