1 /* $NetBSD: dmphy.c,v 1.47 2020/03/15 23:04:50 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 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 Davicom's DM9101 ethernet 10/100 PHY 59 * Data Sheet available from www.davicom8.com 60 */ 61 62 #include <sys/cdefs.h> 63 __KERNEL_RCSID(0, "$NetBSD: dmphy.c,v 1.47 2020/03/15 23:04:50 thorpej Exp $"); 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_media.h> 74 75 #include <dev/mii/mii.h> 76 #include <dev/mii/miivar.h> 77 #include <dev/mii/miidevs.h> 78 79 #include <dev/mii/dmphyreg.h> 80 81 static int dmphymatch(device_t, cfdata_t, void *); 82 static void dmphyattach(device_t, device_t, void *); 83 84 CFATTACH_DECL_NEW(dmphy, sizeof(struct mii_softc), 85 dmphymatch, dmphyattach, mii_phy_detach, mii_phy_activate); 86 87 static int dmphy_service(struct mii_softc *, struct mii_data *, int); 88 static void dmphy_status(struct mii_softc *); 89 90 static const struct mii_phy_funcs dmphy_funcs = { 91 dmphy_service, dmphy_status, mii_phy_reset, 92 }; 93 94 static const struct mii_phydesc dmphys[] = { 95 MII_PHY_DESC(xxDAVICOM, DM9101), 96 MII_PHY_DESC(xxDAVICOM, DM9102), 97 MII_PHY_DESC(xxDAVICOM, DM9161), 98 MII_PHY_DESC(xxDAVICOM, DM9161A), 99 MII_PHY_DESC(xxDAVICOM, DM9161B), 100 MII_PHY_DESC(xxDAVICOM, DM9601), 101 MII_PHY_DESC(DAVICOM, DM9101), 102 MII_PHY_END, 103 }; 104 105 static int 106 dmphymatch(device_t parent, cfdata_t match, void *aux) 107 { 108 struct mii_attach_args *ma = aux; 109 110 if (mii_phy_match(ma, dmphys) != NULL) 111 return 10; 112 113 return 0; 114 } 115 116 static void 117 dmphyattach(device_t parent, device_t self, void *aux) 118 { 119 struct mii_softc *sc = device_private(self); 120 struct mii_attach_args *ma = aux; 121 struct mii_data *mii = ma->mii_data; 122 const struct mii_phydesc *mpd; 123 124 mpd = mii_phy_match(ma, dmphys); 125 aprint_naive(": Media interface\n"); 126 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 127 128 sc->mii_dev = self; 129 sc->mii_inst = mii->mii_instance; 130 sc->mii_phy = ma->mii_phyno; 131 sc->mii_funcs = &dmphy_funcs; 132 sc->mii_pdata = mii; 133 sc->mii_flags = ma->mii_flags; 134 135 mii_lock(mii); 136 137 PHY_RESET(sc); 138 139 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 140 sc->mii_capabilities &= ma->mii_capmask; 141 142 mii_unlock(mii); 143 144 mii_phy_add_media(sc); 145 } 146 147 static int 148 dmphy_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 KASSERT(mii_locked(mii)); 154 155 switch (cmd) { 156 case MII_POLLSTAT: 157 /* If we're not polling our PHY instance, just return. */ 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 /* If the interface is not up, don't do anything. */ 174 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 175 break; 176 177 mii_phy_setmedia(sc); 178 break; 179 180 case MII_TICK: 181 /* If we're not currently selected, just return. */ 182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 183 return 0; 184 185 if (mii_phy_tick(sc) == EJUSTRETURN) 186 return 0; 187 break; 188 189 case MII_DOWN: 190 mii_phy_down(sc); 191 return 0; 192 } 193 194 /* Update the media status. */ 195 mii_phy_status(sc); 196 197 /* Callback if something changed. */ 198 mii_phy_update(sc, cmd); 199 return 0; 200 } 201 202 static void 203 dmphy_status(struct mii_softc *sc) 204 { 205 struct mii_data *mii = sc->mii_pdata; 206 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 207 uint16_t bmsr, bmcr, dscsr; 208 209 KASSERT(mii_locked(mii)); 210 211 mii->mii_media_status = IFM_AVALID; 212 mii->mii_media_active = IFM_ETHER; 213 214 PHY_READ(sc, MII_BMSR, &bmsr); 215 PHY_READ(sc, MII_BMSR, &bmsr); 216 if (bmsr & BMSR_LINK) 217 mii->mii_media_status |= IFM_ACTIVE; 218 219 PHY_READ(sc, MII_BMCR, &bmcr); 220 if (bmcr & BMCR_ISO) { 221 mii->mii_media_active |= IFM_NONE; 222 mii->mii_media_status = 0; 223 return; 224 } 225 226 if (bmcr & BMCR_LOOP) 227 mii->mii_media_active |= IFM_LOOP; 228 229 if (bmcr & BMCR_AUTOEN) { 230 /* 231 * The PAR status bits are only valid if autonegotiation 232 * has completed (or it's disabled). 233 */ 234 if ((bmsr & BMSR_ACOMP) == 0) { 235 /* Erg, still trying, I guess... */ 236 mii->mii_media_active |= IFM_NONE; 237 return; 238 } 239 240 PHY_READ(sc, MII_DMPHY_DSCSR, &dscsr); 241 if (dscsr & DSCSR_100FDX) 242 mii->mii_media_active |= IFM_100_TX | IFM_FDX; 243 else if (dscsr & DSCSR_100HDX) 244 mii->mii_media_active |= IFM_100_TX | IFM_HDX; 245 else if (dscsr & DSCSR_10FDX) 246 mii->mii_media_active |= IFM_10_T | IFM_FDX; 247 else if (dscsr & DSCSR_10HDX) 248 mii->mii_media_active |= IFM_10_T | IFM_HDX; 249 else 250 mii->mii_media_active |= IFM_NONE; 251 if (mii->mii_media_active & IFM_FDX) 252 mii->mii_media_active |= mii_phy_flowstatus(sc); 253 } else 254 mii->mii_media_active = ife->ifm_media; 255 } 256
Indexes created Sun Sep 21 20:09:37 GMT 2025