gentbi.c revision 1.28
1 /* $NetBSD: gentbi.c,v 1.28 2019/01/22 03:42:27 msaitoh 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 1.28 2019/01/22 03:42:27 msaitoh 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 rv; 100 uint16_t bmsr, extsr; 101 102 /* 103 * We match as a generic TBI if: 104 * 105 * - There is no media in the BMSR. 106 * - EXTSR has only 1000X. 107 */ 108 rv = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_BMSR, &bmsr); 109 if ((rv != 0) 110 || (bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) 111 return (0); 112 113 rv = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_EXTSR, &extsr); 114 if ((rv != 0) || ((extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) != 0)) 115 return (0); 116 117 if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { 118 /* 119 * We think this is a generic TBI. Return a match 120 * priority higher than ukphy, but lower than what 121 * specific drivers will return. 122 */ 123 return (2); 124 } 125 126 return (0); 127 } 128 129 static void 130 gentbiattach(device_t parent, device_t self, void *aux) 131 { 132 struct mii_softc *sc = device_private(self); 133 struct mii_attach_args *ma = aux; 134 struct mii_data *mii = ma->mii_data; 135 int oui = MII_OUI(ma->mii_id1, ma->mii_id2); 136 int model = MII_MODEL(ma->mii_id2); 137 int rev = MII_REV(ma->mii_id2); 138 const char *descr; 139 140 if ((descr = mii_get_descr(oui, model)) != NULL) 141 aprint_normal(": %s (OUI 0x%06x, model 0x%04x), rev. %d\n", 142 descr, oui, model, rev); 143 else 144 aprint_normal(": OUI 0x%06x, model 0x%04x, rev. %d\n", 145 oui, model, rev); 146 147 aprint_naive(": Generic ten-bit interface\n"); 148 149 sc->mii_dev = self; 150 sc->mii_inst = mii->mii_instance; 151 sc->mii_phy = ma->mii_phyno; 152 sc->mii_mpd_oui = oui; 153 sc->mii_mpd_model = model; 154 sc->mii_mpd_rev = rev; 155 sc->mii_funcs = &gentbi_funcs; 156 sc->mii_pdata = mii; 157 sc->mii_flags = ma->mii_flags; 158 sc->mii_anegticks = MII_ANEGTICKS; 159 160 PHY_RESET(sc); 161 162 /* 163 * Mask out all media in the BMSR. We only are really interested 164 * in "auto". 165 */ 166 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 167 sc->mii_capabilities = 168 sc->mii_capabilities & ma->mii_capmask & ~BMSR_MEDIAMASK; 169 if (sc->mii_capabilities & BMSR_EXTSTAT) 170 PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities); 171 172 aprint_normal_dev(self, ""); 173 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 174 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 175 aprint_error("no media present"); 176 else 177 mii_phy_add_media(sc); 178 aprint_normal("\n"); 179 } 180 181 static int 182 gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 183 { 184 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 185 uint16_t reg; 186 187 switch (cmd) { 188 case MII_POLLSTAT: 189 /* 190 * If we're not polling our PHY instance, just return. 191 */ 192 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 193 return (0); 194 break; 195 196 case MII_MEDIACHG: 197 /* 198 * If the media indicates a different PHY instance, 199 * isolate ourselves. 200 */ 201 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 202 PHY_READ(sc, MII_BMCR, ®); 203 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 204 return (0); 205 } 206 207 /* 208 * If the interface is not up, don't do anything. 209 */ 210 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 211 break; 212 213 mii_phy_setmedia(sc); 214 break; 215 216 case MII_TICK: 217 /* 218 * If we're not currently selected, just return. 219 */ 220 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 221 return (0); 222 223 if (mii_phy_tick(sc) == EJUSTRETURN) 224 return (0); 225 break; 226 227 case MII_DOWN: 228 mii_phy_down(sc); 229 return (0); 230 } 231 232 /* Update the media status. */ 233 mii_phy_status(sc); 234 235 /* Callback if something changed. */ 236 mii_phy_update(sc, cmd); 237 return (0); 238 } 239 240 static void 241 gentbi_status(struct mii_softc *sc) 242 { 243 struct mii_data *mii = sc->mii_pdata; 244 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 245 uint16_t bmsr, bmcr, anlpar; 246 247 mii->mii_media_status = IFM_AVALID; 248 mii->mii_media_active = IFM_ETHER; 249 250 PHY_READ(sc, MII_BMSR, &bmsr); 251 PHY_READ(sc, MII_BMSR, &bmsr); 252 253 if (bmsr & BMSR_LINK) 254 mii->mii_media_status |= IFM_ACTIVE; 255 256 PHY_READ(sc, MII_BMCR, &bmcr); 257 if (bmcr & BMCR_ISO) { 258 mii->mii_media_active |= IFM_NONE; 259 mii->mii_media_status = 0; 260 return; 261 } 262 263 if (bmcr & BMCR_LOOP) 264 mii->mii_media_active |= IFM_LOOP; 265 266 if (bmcr & BMCR_AUTOEN) { 267 /* 268 * The media status bits are only valid if autonegotiation 269 * has completed (or it's disabled). 270 */ 271 if ((bmsr & BMSR_ACOMP) == 0) { 272 /* Erg, still trying, I guess... */ 273 mii->mii_media_active |= IFM_NONE; 274 return; 275 } 276 277 /* 278 * The media is always 1000baseSX. Check the ANLPAR to 279 * see if we're doing full-duplex. 280 */ 281 mii->mii_media_active |= IFM_1000_SX; 282 283 PHY_READ(sc, MII_ANLPAR, &anlpar); 284 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 285 (anlpar & ANLPAR_X_FD) != 0) 286 mii->mii_media_active |= 287 IFM_FDX | mii_phy_flowstatus(sc); 288 else 289 mii->mii_media_active |= IFM_HDX; 290 } else 291 mii->mii_media_active = ife->ifm_media; 292 } 293
Indexes created Wed Oct 22 13:09:56 GMT 2025