glxtphy.c revision 1.28
1 /* $NetBSD: glxtphy.c,v 1.28 2019/02/24 17:22:21 christos 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 the Level One LXT-1000 10/100/1000 PHY. 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: glxtphy.c,v 1.28 2019/02/24 17:22:21 christos Exp $"); 63 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/device.h> 68 #include <sys/socket.h> 69 #include <sys/errno.h> 70 71 #include <net/if.h> 72 #include <net/if_media.h> 73 74 #include <dev/mii/mii.h> 75 #include <dev/mii/miivar.h> 76 #include <dev/mii/miidevs.h> 77 78 #include <dev/mii/glxtphyreg.h> 79 80 static int glxtphymatch(device_t, cfdata_t, void *); 81 static void glxtphyattach(device_t, device_t, void *); 82 83 CFATTACH_DECL_NEW(glxtphy, sizeof(struct mii_softc), 84 glxtphymatch, glxtphyattach, mii_phy_detach, mii_phy_activate); 85 86 static int glxtphy_service(struct mii_softc *, struct mii_data *, int); 87 static void glxtphy_status(struct mii_softc *); 88 89 static const struct mii_phy_funcs glxtphy_funcs = { 90 glxtphy_service, glxtphy_status, mii_phy_reset, 91 }; 92 93 static const struct mii_phydesc glxtphys[] = { 94 MII_PHY_DESC(LEVEL1, LXT1000_OLD), 95 MII_PHY_DESC(LEVEL1, LXT1000), 96 MII_PHY_END, 97 }; 98 99 static int 100 glxtphymatch(device_t parent, cfdata_t match, 101 void *aux) 102 { 103 struct mii_attach_args *ma = aux; 104 105 if (mii_phy_match(ma, glxtphys) != NULL) 106 return (10); 107 108 return (0); 109 } 110 111 static void 112 glxtphyattach(device_t parent, device_t self, void *aux) 113 { 114 struct mii_softc *sc = device_private(self); 115 struct mii_attach_args *ma = aux; 116 struct mii_data *mii = ma->mii_data; 117 const struct mii_phydesc *mpd; 118 119 mpd = mii_phy_match(ma, glxtphys); 120 aprint_naive(": Media interface\n"); 121 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 122 123 sc->mii_dev = self; 124 sc->mii_inst = mii->mii_instance; 125 sc->mii_phy = ma->mii_phyno; 126 sc->mii_funcs = &glxtphy_funcs; 127 sc->mii_pdata = mii; 128 sc->mii_flags = ma->mii_flags; 129 sc->mii_anegticks = MII_ANEGTICKS; 130 131 PHY_RESET(sc); 132 133 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 134 sc->mii_capabilities &= ma->mii_capmask; 135 if (sc->mii_capabilities & BMSR_EXTSTAT) 136 PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities); 137 138 aprint_normal_dev(self, ""); 139 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 140 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 141 aprint_error("no media present"); 142 else 143 mii_phy_add_media(sc); 144 aprint_normal("\n"); 145 } 146 147 static int 148 glxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 149 { 150 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 151 uint16_t reg; 152 153 switch (cmd) { 154 case MII_POLLSTAT: 155 /* 156 * If we're not polling our PHY instance, just return. 157 */ 158 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 159 return (0); 160 break; 161 162 case MII_MEDIACHG: 163 /* 164 * If the media indicates a different PHY instance, 165 * isolate ourselves. 166 */ 167 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 168 PHY_READ(sc, MII_BMCR, ®); 169 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 170 return (0); 171 } 172 173 /* 174 * If the interface is not up, don't do anything. 175 */ 176 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 177 break; 178 179 mii_phy_setmedia(sc); 180 break; 181 182 case MII_TICK: 183 /* 184 * If we're not currently selected, just return. 185 */ 186 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 187 return (0); 188 189 if (mii_phy_tick(sc) == EJUSTRETURN) 190 return (0); 191 break; 192 193 case MII_DOWN: 194 mii_phy_down(sc); 195 return (0); 196 } 197 198 /* Update the media status. */ 199 mii_phy_status(sc); 200 201 /* Callback if something changed. */ 202 mii_phy_update(sc, cmd); 203 return (0); 204 } 205 206 static void 207 glxtphy_status(struct mii_softc *sc) 208 { 209 struct mii_data *mii = sc->mii_pdata; 210 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 211 uint16_t bmcr, qsr, gtsr; 212 213 mii->mii_media_status = IFM_AVALID; 214 mii->mii_media_active = IFM_ETHER; 215 216 PHY_READ(sc, MII_GLXTPHY_QSR, &qsr); 217 218 if (qsr & QSR_LINK) 219 mii->mii_media_status |= IFM_ACTIVE; 220 221 PHY_READ(sc, MII_BMCR, &bmcr); 222 if (bmcr & BMCR_ISO) { 223 mii->mii_media_active |= IFM_NONE; 224 mii->mii_media_status = 0; 225 return; 226 } 227 228 if (bmcr & BMCR_LOOP) 229 mii->mii_media_active |= IFM_LOOP; 230 231 if (bmcr & BMCR_AUTOEN) { 232 /* 233 * The media status bits are only valid of autonegotiation 234 * has completed (or it's disabled). 235 */ 236 if ((qsr & QSR_ACOMP) == 0) { 237 /* Erg, still trying, I guess... */ 238 mii->mii_media_active |= IFM_NONE; 239 return; 240 } 241 242 switch (QSR_SPEED_get(qsr)) { 243 case SPEED_1000: 244 mii->mii_media_active |= IFM_1000_T; 245 PHY_READ(sc, MII_100T2SR, >sr); 246 if (gtsr & GTSR_MS_RES) 247 mii->mii_media_active |= IFM_ETH_MASTER; 248 break; 249 250 case SPEED_100: 251 mii->mii_media_active |= IFM_100_TX; 252 break; 253 254 case SPEED_10_MII: 255 case SPEED_10_SERIAL: 256 mii->mii_media_active |= IFM_10_T; 257 break; 258 } 259 260 if (qsr & QSR_DUPLEX) 261 mii->mii_media_active |= 262 IFM_FDX | mii_phy_flowstatus(sc); 263 else 264 mii->mii_media_active |= IFM_HDX; 265 } else 266 mii->mii_media_active = ife->ifm_media; 267 } 268
Indexes created Thu Sep 25 16:09:42 GMT 2025