gentbi.c revision 1.24.18.1
1 /* $NetBSD: gentbi.c,v 1.24.18.1 2014/11/09 12:13:15 martin 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 __KERNEL_RCSID(0, "$NetBSD: gentbi.c,v 1.24.18.1 2014/11/09 12:13:15 martin Exp $"); 66 67 #include <sys/param.h> 68 #include <sys/systm.h> 69 #include <sys/kernel.h> 70 #include <sys/device.h> 71 #include <sys/socket.h> 72 #include <sys/errno.h> 73 74 #include <net/if.h> 75 #include <net/if_media.h> 76 77 #include <dev/mii/mii.h> 78 #include <dev/mii/miivar.h> 79 #include <dev/mii/miidevs.h> 80 81 static int gentbimatch(device_t, cfdata_t, void *); 82 static void gentbiattach(device_t, device_t, void *); 83 84 CFATTACH_DECL_NEW(gentbi, sizeof(struct mii_softc), 85 gentbimatch, gentbiattach, mii_phy_detach, mii_phy_activate); 86 87 static int gentbi_service(struct mii_softc *, struct mii_data *, int); 88 static void gentbi_status(struct mii_softc *); 89 90 static const struct mii_phy_funcs gentbi_funcs = { 91 gentbi_service, gentbi_status, mii_phy_reset, 92 }; 93 94 static int 95 gentbimatch(device_t parent, cfdata_t match, void *aux) 96 { 97 struct mii_attach_args *ma = aux; 98 struct mii_data *mii = ma->mii_data; 99 int bmsr, extsr; 100 101 /* 102 * We match as a generic TBI if: 103 * 104 * - There is no media in the BMSR. 105 * - EXTSR has only 1000X. 106 */ 107 bmsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_BMSR); 108 if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) 109 return (0); 110 111 extsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_EXTSR); 112 if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) 113 return (0); 114 115 if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { 116 /* 117 * We think this is a generic TBI. Return a match 118 * priority higher than ukphy, but lower than what 119 * specific drivers will return. 120 */ 121 return (2); 122 } 123 124 return (0); 125 } 126 127 static void 128 gentbiattach(device_t parent, device_t self, void *aux) 129 { 130 struct mii_softc *sc = device_private(self); 131 struct mii_attach_args *ma = aux; 132 struct mii_data *mii = ma->mii_data; 133 134 aprint_naive(": Media interface\n"); 135 aprint_normal(": Generic ten-bit interface, rev. %d\n", 136 MII_REV(ma->mii_id2)); 137 138 sc->mii_dev = self; 139 sc->mii_inst = mii->mii_instance; 140 sc->mii_phy = ma->mii_phyno; 141 sc->mii_funcs = &gentbi_funcs; 142 sc->mii_pdata = mii; 143 sc->mii_flags = ma->mii_flags; 144 sc->mii_anegticks = MII_ANEGTICKS; 145 146 PHY_RESET(sc); 147 148 /* 149 * Mask out all media in the BMSR. We only are really interested 150 * in "auto". 151 */ 152 sc->mii_capabilities = 153 PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK; 154 if (sc->mii_capabilities & BMSR_EXTSTAT) 155 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 156 157 aprint_normal_dev(self, ""); 158 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 159 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 160 aprint_error("no media present"); 161 else 162 mii_phy_add_media(sc); 163 aprint_normal("\n"); 164 } 165 166 static int 167 gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 168 { 169 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 170 int reg; 171 172 switch (cmd) { 173 case MII_POLLSTAT: 174 /* 175 * If we're not polling our PHY instance, just return. 176 */ 177 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 178 return (0); 179 break; 180 181 case MII_MEDIACHG: 182 /* 183 * If the media indicates a different PHY instance, 184 * isolate ourselves. 185 */ 186 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 187 reg = PHY_READ(sc, MII_BMCR); 188 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 189 return (0); 190 } 191 192 /* 193 * If the interface is not up, don't do anything. 194 */ 195 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 196 break; 197 198 mii_phy_setmedia(sc); 199 break; 200 201 case MII_TICK: 202 /* 203 * If we're not currently selected, just return. 204 */ 205 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 206 return (0); 207 208 if (mii_phy_tick(sc) == EJUSTRETURN) 209 return (0); 210 break; 211 212 case MII_DOWN: 213 mii_phy_down(sc); 214 return (0); 215 } 216 217 /* Update the media status. */ 218 mii_phy_status(sc); 219 220 /* Callback if something changed. */ 221 mii_phy_update(sc, cmd); 222 return (0); 223 } 224 225 static void 226 gentbi_status(struct mii_softc *sc) 227 { 228 struct mii_data *mii = sc->mii_pdata; 229 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 230 int bmsr, bmcr, anlpar; 231 232 mii->mii_media_status = IFM_AVALID; 233 mii->mii_media_active = IFM_ETHER; 234 235 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 236 237 if (bmsr & BMSR_LINK) 238 mii->mii_media_status |= IFM_ACTIVE; 239 240 bmcr = PHY_READ(sc, MII_BMCR); 241 if (bmcr & BMCR_ISO) { 242 mii->mii_media_active |= IFM_NONE; 243 mii->mii_media_status = 0; 244 return; 245 } 246 247 if (bmcr & BMCR_LOOP) 248 mii->mii_media_active |= IFM_LOOP; 249 250 if (bmcr & BMCR_AUTOEN) { 251 /* 252 * The media status bits are only valid if autonegotiation 253 * has completed (or it's disabled). 254 */ 255 if ((bmsr & BMSR_ACOMP) == 0) { 256 /* Erg, still trying, I guess... */ 257 mii->mii_media_active |= IFM_NONE; 258 return; 259 } 260 261 /* 262 * The media is always 1000baseSX. Check the ANLPAR to 263 * see if we're doing full-duplex. 264 */ 265 mii->mii_media_active |= IFM_1000_SX; 266 267 anlpar = PHY_READ(sc, MII_ANLPAR); 268 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 269 (anlpar & ANLPAR_X_FD) != 0) 270 mii->mii_media_active |= 271 IFM_FDX | mii_phy_flowstatus(sc); 272 else 273 mii->mii_media_active |= IFM_HDX; 274 } else 275 mii->mii_media_active = ife->ifm_media; 276 } 277
Indexes created Wed Oct 29 18:09:52 GMT 2025