1 /* $OpenBSD: gentbi.c,v 1.11 2015/03/14 03:38:48 jsg Exp $ */ 2 /* $NetBSD: gentbi.c,v 1.12 2004/04/11 15:40:56 thorpej Exp $ */ 3 4 /*- 5 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58 /* 59 * Driver for generic ten-bit (1000BASE-SX) interfaces, built in to 60 * many Gigabit Ethernet chips. 61 * 62 * All we have to do here is correctly report speed and duplex. 63 */ 64 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/kernel.h> 68 #include <sys/device.h> 69 #include <sys/socket.h> 70 #include <sys/errno.h> 71 72 #include <net/if.h> 73 #include <net/if_var.h> 74 #include <net/if_media.h> 75 76 #include <dev/mii/mii.h> 77 #include <dev/mii/miivar.h> 78 79 int gentbimatch(struct device *, void *, void *); 80 void gentbiattach(struct device *, struct device *, void *); 81 82 struct cfattach gentbi_ca = { 83 sizeof(struct mii_softc), gentbimatch, gentbiattach, 84 mii_phy_detach 85 }; 86 87 struct cfdriver gentbi_cd = { 88 NULL, "gentbi", DV_DULL 89 }; 90 91 int gentbi_service(struct mii_softc *, struct mii_data *, int); 92 void gentbi_status(struct mii_softc *); 93 94 const struct mii_phy_funcs gentbi_funcs = { 95 gentbi_service, gentbi_status, mii_phy_reset, 96 }; 97 98 int 99 gentbimatch(struct device *parent, void *match, void *aux) 100 { 101 struct mii_attach_args *ma = aux; 102 struct mii_data *mii = ma->mii_data; 103 int bmsr, extsr; 104 105 /* 106 * We match as a generic TBI if: 107 * 108 * - There is no media in the BMSR. 109 * - EXTSR has only 1000X. 110 */ 111 bmsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_BMSR); 112 if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) 113 return (0); 114 115 extsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_EXTSR); 116 if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) 117 return (0); 118 119 if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { 120 /* 121 * We think this is a generic TBI. Return a match 122 * priority higher than ukphy, but lower than what 123 * specific drivers will return. 124 */ 125 return (2); 126 } 127 128 return (0); 129 } 130 131 void 132 gentbiattach(struct device *parent, struct device *self, void *aux) 133 { 134 struct mii_softc *sc = (struct mii_softc *)self; 135 struct mii_attach_args *ma = aux; 136 struct mii_data *mii = ma->mii_data; 137 138 printf(": Generic ten-bit interface, rev. %d\n", 139 MII_REV(ma->mii_id2)); 140 141 sc->mii_inst = mii->mii_instance; 142 sc->mii_phy = ma->mii_phyno; 143 sc->mii_funcs = &gentbi_funcs; 144 sc->mii_pdata = mii; 145 sc->mii_flags = ma->mii_flags; 146 sc->mii_anegticks = MII_ANEGTICKS; 147 148 PHY_RESET(sc); 149 150 /* 151 * Mask out all media in the BMSR. We only are really interested 152 * in "auto". 153 */ 154 sc->mii_capabilities = 155 PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK; 156 if (sc->mii_capabilities & BMSR_EXTSTAT) 157 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 158 159 if ((sc->mii_capabilities & BMSR_MEDIAMASK) || 160 (sc->mii_extcapabilities & EXTSR_MEDIAMASK)) 161 mii_phy_add_media(sc); 162 } 163 164 int 165 gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 166 { 167 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 168 int reg; 169 170 switch (cmd) { 171 case MII_POLLSTAT: 172 /* 173 * If we're not polling our PHY instance, just return. 174 */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 176 return (0); 177 break; 178 179 case MII_MEDIACHG: 180 /* 181 * If the media indicates a different PHY instance, 182 * isolate ourselves. 183 */ 184 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 185 reg = PHY_READ(sc, MII_BMCR); 186 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 187 return (0); 188 } 189 190 /* 191 * If the interface is not up, don't do anything. 192 */ 193 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 194 break; 195 196 mii_phy_setmedia(sc); 197 break; 198 199 case MII_TICK: 200 /* 201 * If we're not currently selected, just return. 202 */ 203 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 204 return (0); 205 206 if (mii_phy_tick(sc) == EJUSTRETURN) 207 return (0); 208 break; 209 210 case MII_DOWN: 211 mii_phy_down(sc); 212 return (0); 213 } 214 215 /* Update the media status. */ 216 mii_phy_status(sc); 217 218 /* Callback if something changed. */ 219 mii_phy_update(sc, cmd); 220 return (0); 221 } 222 223 void 224 gentbi_status(struct mii_softc *sc) 225 { 226 struct mii_data *mii = sc->mii_pdata; 227 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 228 int bmsr, bmcr, anlpar; 229 230 mii->mii_media_status = IFM_AVALID; 231 mii->mii_media_active = IFM_ETHER; 232 233 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 234 235 if (bmsr & BMSR_LINK) 236 mii->mii_media_status |= IFM_ACTIVE; 237 238 bmcr = PHY_READ(sc, MII_BMCR); 239 if (bmcr & BMCR_ISO) { 240 mii->mii_media_active |= IFM_NONE; 241 mii->mii_media_status = 0; 242 return; 243 } 244 245 if (bmcr & BMCR_LOOP) 246 mii->mii_media_active |= IFM_LOOP; 247 248 if (bmcr & BMCR_AUTOEN) { 249 /* 250 * The media status bits are only valid if autonegotiation 251 * has completed (or it's disabled). 252 */ 253 if ((bmsr & BMSR_ACOMP) == 0) { 254 /* Erg, still trying, I guess... */ 255 mii->mii_media_active |= IFM_NONE; 256 return; 257 } 258 259 /* 260 * The media is always 1000baseSX. Check the ANLPAR to 261 * see if we're doing full-duplex. 262 */ 263 mii->mii_media_active |= IFM_1000_SX; 264 265 anlpar = PHY_READ(sc, MII_ANLPAR); 266 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 267 (anlpar & ANLPAR_X_FD) != 0) 268 mii->mii_media_active |= 269 mii_phy_flowstatus(sc) | IFM_FDX; 270 } else 271 mii->mii_media_active = ife->ifm_media; 272 } 273