1/* $OpenBSD: iophy.c,v 1.22 2022/04/06 18:59:29 naddy Exp $ */ 2/* $NetBSD: iophy.c,v 1.8 2000/02/02 23:34:56 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 * Intel 82553 PHY driver 60 */ 61 62#include <sys/param.h> 63#include <sys/systm.h> 64#include <sys/device.h> 65#include <sys/socket.h> 66 67#include <net/if.h> 68#include <net/if_var.h> 69#include <net/if_media.h> 70 71#include <dev/mii/mii.h> 72#include <dev/mii/miivar.h> 73#include <dev/mii/miidevs.h> 74 75#include <dev/mii/iophyreg.h> 76 77int iophymatch(struct device *, void *, void *); 78void iophyattach(struct device *, struct device *, void *); 79 80const struct cfattach iophy_ca = { 81 sizeof(struct mii_softc), iophymatch, iophyattach, mii_phy_detach 82}; 83 84struct cfdriver iophy_cd = { 85 NULL, "iophy", DV_DULL 86}; 87 88int iophy_service(struct mii_softc *, struct mii_data *, int); 89void iophy_status(struct mii_softc *); 90 91const struct mii_phy_funcs iophy_funcs = { 92 iophy_service, iophy_status, mii_phy_reset, 93}; 94 95static const struct mii_phydesc iophys[] = { 96 { MII_OUI_xxINTEL, MII_MODEL_xxINTEL_I82553, 97 MII_STR_xxINTEL_I82553 }, 98 { MII_OUI_INTEL, MII_MODEL_INTEL_I82553, 99 MII_STR_INTEL_I82553 }, 100 101 { 0, 0, 102 NULL }, 103 104}; 105 106int 107iophymatch(struct device *parent, void *match, void *aux) 108{ 109 struct mii_attach_args *ma = aux; 110 111 if (mii_phy_match(ma, iophys) != NULL) 112 return (10); 113 114 return (0); 115} 116 117void 118iophyattach(struct device *parent, struct device *self, void *aux) 119{ 120 struct mii_softc *sc = (struct mii_softc *)self; 121 struct mii_attach_args *ma = aux; 122 struct mii_data *mii = ma->mii_data; 123 const struct mii_phydesc *mpd; 124 125 mpd = mii_phy_match(ma, iophys); 126 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 127 128 sc->mii_inst = mii->mii_instance; 129 sc->mii_phy = ma->mii_phyno; 130 sc->mii_funcs = &iophy_funcs; 131 sc->mii_pdata = mii; 132 sc->mii_flags = ma->mii_flags; 133 134 PHY_RESET(sc); 135 136 sc->mii_capabilities = 137 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 138 if (sc->mii_capabilities & BMSR_MEDIAMASK) 139 mii_phy_add_media(sc); 140} 141 142int 143iophy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 144{ 145 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 146 int reg; 147 148 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 149 return (ENXIO); 150 151 switch (cmd) { 152 case MII_POLLSTAT: 153 /* 154 * If we're not polling our PHY instance, just return. 155 */ 156 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 157 return (0); 158 break; 159 160 case MII_MEDIACHG: 161 /* 162 * If the media indicates a different PHY instance, 163 * isolate ourselves. 164 */ 165 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 166 reg = PHY_READ(sc, MII_BMCR); 167 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 168 return (0); 169 } 170 171 /* 172 * If the interface is not up, don't do anything. 173 */ 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 /* 182 * If we're not currently selected, just return. 183 */ 184 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 185 return (0); 186 187 if (mii_phy_tick(sc) == EJUSTRETURN) 188 return (0); 189 break; 190 191 case MII_DOWN: 192 mii_phy_down(sc); 193 return (0); 194 } 195 196 /* Update the media status. */ 197 mii_phy_status(sc); 198 199 /* Callback if something changed. */ 200 mii_phy_update(sc, cmd); 201 return (0); 202} 203 204void 205iophy_status(struct mii_softc *sc) 206{ 207 struct mii_data *mii = sc->mii_pdata; 208 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 209 int bmsr, bmcr, ext0; 210 211 mii->mii_media_status = IFM_AVALID; 212 mii->mii_media_active = IFM_ETHER; 213 214 bmsr = PHY_READ(sc, MII_BMSR) | 215 PHY_READ(sc, MII_BMSR); 216 if (bmsr & BMSR_LINK) 217 mii->mii_media_status |= IFM_ACTIVE; 218 219 bmcr = PHY_READ(sc, MII_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 if ((bmsr & BMSR_ACOMP) == 0) { 231 /* Erg, still trying, I guess... */ 232 mii->mii_media_active |= IFM_NONE; 233 return; 234 } 235 236 ext0 = PHY_READ(sc, MII_IOPHY_EXT0); 237 if (ext0 & EXT0_SPEED) { 238 if (bmsr & BMSR_100TXFDX || 239 bmsr & BMSR_100TXHDX) 240 mii->mii_media_active |= IFM_100_TX; 241 else 242 mii->mii_media_active |= IFM_100_T4; 243 } else 244 mii->mii_media_active |= IFM_10_T; 245 246 if (ext0 & EXT0_DUPLEX) 247 mii->mii_media_active |= IFM_FDX; 248 else 249 mii->mii_media_active |= IFM_HDX; 250 } else 251 mii->mii_media_active = ife->ifm_media; 252} 253