glxtphy.c revision 1.31
1 /* $NetBSD: glxtphy.c,v 1.31 2019/11/27 10:19:20 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 the Level One LXT-1000 10/100/1000 PHY. 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: glxtphy.c,v 1.31 2019/11/27 10:19:20 msaitoh 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, void *aux) 101 { 102 struct mii_attach_args *ma = aux; 103 104 if (mii_phy_match(ma, glxtphys) != NULL) 105 return 10; 106 107 return 0; 108 } 109 110 static void 111 glxtphyattach(device_t parent, device_t self, void *aux) 112 { 113 struct mii_softc *sc = device_private(self); 114 struct mii_attach_args *ma = aux; 115 struct mii_data *mii = ma->mii_data; 116 const struct mii_phydesc *mpd; 117 118 mpd = mii_phy_match(ma, glxtphys); 119 aprint_naive(": Media interface\n"); 120 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 121 122 sc->mii_dev = self; 123 sc->mii_inst = mii->mii_instance; 124 sc->mii_phy = ma->mii_phyno; 125 sc->mii_funcs = &glxtphy_funcs; 126 sc->mii_pdata = mii; 127 sc->mii_flags = ma->mii_flags; 128 129 PHY_RESET(sc); 130 131 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 132 sc->mii_capabilities &= ma->mii_capmask; 133 if (sc->mii_capabilities & BMSR_EXTSTAT) 134 PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities); 135 136 mii_phy_add_media(sc); 137 } 138 139 static int 140 glxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 141 { 142 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 143 uint16_t reg; 144 145 switch (cmd) { 146 case MII_POLLSTAT: 147 /* If we're not polling our PHY instance, just return. */ 148 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 149 return 0; 150 break; 151 152 case MII_MEDIACHG: 153 /* 154 * If the media indicates a different PHY instance, 155 * isolate ourselves. 156 */ 157 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 158 PHY_READ(sc, MII_BMCR, ®); 159 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 160 return 0; 161 } 162 163 /* If the interface is not up, don't do anything. */ 164 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 165 break; 166 167 mii_phy_setmedia(sc); 168 break; 169 170 case MII_TICK: 171 /* If we're not currently selected, just return. */ 172 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 173 return 0; 174 175 if (mii_phy_tick(sc) == EJUSTRETURN) 176 return 0; 177 break; 178 179 case MII_DOWN: 180 mii_phy_down(sc); 181 return 0; 182 } 183 184 /* Update the media status. */ 185 mii_phy_status(sc); 186 187 /* Callback if something changed. */ 188 mii_phy_update(sc, cmd); 189 return 0; 190 } 191 192 static void 193 glxtphy_status(struct mii_softc *sc) 194 { 195 struct mii_data *mii = sc->mii_pdata; 196 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 197 uint16_t bmcr, qsr, gtsr; 198 199 mii->mii_media_status = IFM_AVALID; 200 mii->mii_media_active = IFM_ETHER; 201 202 PHY_READ(sc, MII_GLXTPHY_QSR, &qsr); 203 204 if (qsr & QSR_LINK) 205 mii->mii_media_status |= IFM_ACTIVE; 206 207 PHY_READ(sc, MII_BMCR, &bmcr); 208 if (bmcr & BMCR_ISO) { 209 mii->mii_media_active |= IFM_NONE; 210 mii->mii_media_status = 0; 211 return; 212 } 213 214 if (bmcr & BMCR_LOOP) 215 mii->mii_media_active |= IFM_LOOP; 216 217 if (bmcr & BMCR_AUTOEN) { 218 /* 219 * The media status bits are only valid if autonegotiation 220 * has completed (or it's disabled). 221 */ 222 if ((qsr & QSR_ACOMP) == 0) { 223 /* Erg, still trying, I guess... */ 224 mii->mii_media_active |= IFM_NONE; 225 return; 226 } 227 228 switch (QSR_SPEED_get(qsr)) { 229 case SPEED_1000: 230 mii->mii_media_active |= IFM_1000_T; 231 PHY_READ(sc, MII_100T2SR, >sr); 232 if (gtsr & GTSR_MS_RES) 233 mii->mii_media_active |= IFM_ETH_MASTER; 234 break; 235 236 case SPEED_100: 237 mii->mii_media_active |= IFM_100_TX; 238 break; 239 240 case SPEED_10_MII: 241 case SPEED_10_SERIAL: 242 mii->mii_media_active |= IFM_10_T; 243 break; 244 } 245 246 if (qsr & QSR_DUPLEX) 247 mii->mii_media_active |= 248 IFM_FDX | mii_phy_flowstatus(sc); 249 else 250 mii->mii_media_active |= IFM_HDX; 251 } else 252 mii->mii_media_active = ife->ifm_media; 253 } 254
Indexes created Wed Sep 24 05:09:52 GMT 2025