1/* $OpenBSD: nsphyter.c,v 1.20 2022/04/06 18:59:29 naddy Exp $ */ 2/* $NetBSD: nsphyter.c,v 1.5 2000/02/02 23:34:57 thorpej Exp $ */ 3 4/*- 5 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34/* 35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58/* 59 * driver for National Semiconductor's DP83843 `PHYTER' ethernet 10/100 PHY 60 * Data Sheet available from www.national.com 61 */ 62 63#include <sys/param.h> 64#include <sys/systm.h> 65#include <sys/device.h> 66#include <sys/socket.h> 67#include <sys/errno.h> 68 69#include <net/if.h> 70#include <net/if_var.h> 71#include <net/if_media.h> 72 73#include <dev/mii/mii.h> 74#include <dev/mii/miivar.h> 75#include <dev/mii/miidevs.h> 76 77#include <dev/mii/nsphyterreg.h> 78 79int nsphytermatch(struct device *, void *, void *); 80void nsphyterattach(struct device *, struct device *, void *); 81 82const struct cfattach nsphyter_ca = { 83 sizeof(struct mii_softc), nsphytermatch, nsphyterattach, 84 mii_phy_detach 85}; 86 87struct cfdriver nsphyter_cd = { 88 NULL, "nsphyter", DV_DULL 89}; 90 91int nsphyter_service(struct mii_softc *, struct mii_data *, int); 92void nsphyter_status(struct mii_softc *); 93 94const struct mii_phy_funcs nsphyter_funcs = { 95 nsphyter_service, nsphyter_status, mii_phy_reset, 96}; 97 98static const struct mii_phydesc nsphyterphys[] = { 99 { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83815, 100 MII_STR_NATSEMI_DP83815 }, 101 { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83843, 102 MII_STR_NATSEMI_DP83843 }, 103 { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83847, 104 MII_STR_NATSEMI_DP83847 }, 105 106 { 0, 0, 107 NULL }, 108}; 109 110int 111nsphytermatch(struct device *parent, void *match, void *aux) 112{ 113 struct mii_attach_args *ma = aux; 114 115 if (mii_phy_match(ma, nsphyterphys) != NULL) 116 return (10); 117 118 return (0); 119} 120 121void 122nsphyterattach(struct device *parent, struct device *self, void *aux) 123{ 124 struct mii_softc *sc = (struct mii_softc *)self; 125 struct mii_attach_args *ma = aux; 126 struct mii_data *mii = ma->mii_data; 127 const struct mii_phydesc *mpd; 128 129 mpd = mii_phy_match(ma, nsphyterphys); 130 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 131 132 sc->mii_inst = mii->mii_instance; 133 sc->mii_phy = ma->mii_phyno; 134 sc->mii_funcs = &nsphyter_funcs; 135 sc->mii_pdata = mii; 136 sc->mii_flags = ma->mii_flags; 137 138 PHY_RESET(sc); 139 140 sc->mii_capabilities = 141 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 142 if (sc->mii_capabilities & BMSR_MEDIAMASK) 143 mii_phy_add_media(sc); 144} 145 146int 147nsphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 148{ 149 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 150 int reg; 151 152 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 153 return (ENXIO); 154 155 switch (cmd) { 156 case MII_POLLSTAT: 157 /* 158 * If we're not polling our PHY instance, just return. 159 */ 160 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 161 return (0); 162 break; 163 164 case MII_MEDIACHG: 165 /* 166 * If the media indicates a different PHY instance, 167 * isolate ourselves. 168 */ 169 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 170 reg = PHY_READ(sc, MII_BMCR); 171 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 172 return (0); 173 } 174 175 /* 176 * If the interface is not up, don't do anything. 177 */ 178 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 179 break; 180 181 mii_phy_setmedia(sc); 182 break; 183 184 case MII_TICK: 185 /* 186 * If we're not currently selected, just return. 187 */ 188 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 189 return (0); 190 191 if (mii_phy_tick(sc) == EJUSTRETURN) 192 return (0); 193 break; 194 195 case MII_DOWN: 196 mii_phy_down(sc); 197 return (0); 198 } 199 200 /* Update the media status. */ 201 mii_phy_status(sc); 202 203 /* Callback if something changed. */ 204 mii_phy_update(sc, cmd); 205 return (0); 206} 207 208void 209nsphyter_status(struct mii_softc *sc) 210{ 211 struct mii_data *mii = sc->mii_pdata; 212 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 213 int bmsr, bmcr, physts; 214 215 mii->mii_media_status = IFM_AVALID; 216 mii->mii_media_active = IFM_ETHER; 217 218 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 219 physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS); 220 221 if (physts & PHYSTS_LINK) 222 mii->mii_media_status |= IFM_ACTIVE; 223 224 bmcr = PHY_READ(sc, MII_BMCR); 225 if (bmcr & BMCR_ISO) { 226 mii->mii_media_active |= IFM_NONE; 227 mii->mii_media_status = 0; 228 return; 229 } 230 231 if (bmcr & BMCR_LOOP) 232 mii->mii_media_active |= IFM_LOOP; 233 234 if (bmcr & BMCR_AUTOEN) { 235 /* 236 * The media status bits are only valid if autonegotiation 237 * has completed (or it's disabled). 238 */ 239 if ((bmsr & BMSR_ACOMP) == 0) { 240 /* Erg, still trying, I guess... */ 241 mii->mii_media_active |= IFM_NONE; 242 return; 243 } 244 245 if (physts & PHYSTS_SPEED10) 246 mii->mii_media_active |= IFM_10_T; 247 else 248 mii->mii_media_active |= IFM_100_TX; 249 250 if (physts & PHYSTS_DUPLEX) 251 mii->mii_media_active |= IFM_FDX; 252 else 253 mii->mii_media_active |= IFM_HDX; 254 } else 255 mii->mii_media_active = ife->ifm_media; 256} 257