1/* $NetBSD: inphy.c,v 1.60 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 Intel's i82555 ethernet 10/100 PHY 59 * Data Sheet available from www.intel.com 60 */ 61 62#include <sys/cdefs.h> 63__KERNEL_RCSID(0, "$NetBSD: inphy.c,v 1.60 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/inphyreg.h> 80 81static int inphymatch(device_t, cfdata_t, void *); 82static void inphyattach(device_t, device_t, void *); 83 84CFATTACH_DECL_NEW(inphy, sizeof(struct mii_softc), 85 inphymatch, inphyattach, mii_phy_detach, mii_phy_activate); 86 87static int inphy_service(struct mii_softc *, struct mii_data *, int); 88static void inphy_status(struct mii_softc *); 89 90static const struct mii_phy_funcs inphy_funcs = { 91 inphy_service, inphy_status, mii_phy_reset, 92}; 93 94static const struct mii_phydesc inphys[] = { 95 MII_PHY_DESC(yyINTEL, I82555), 96 MII_PHY_DESC(yyINTEL, I82562EH), 97 MII_PHY_DESC(yyINTEL, I82562EM), 98 MII_PHY_DESC(yyINTEL, I82562ET), 99 MII_PHY_DESC(yyINTEL, I82562G), 100 MII_PHY_END, 101}; 102 103static int 104inphymatch(device_t parent, cfdata_t match, void *aux) 105{ 106 struct mii_attach_args *ma = aux; 107 108 if (mii_phy_match(ma, inphys) != NULL) 109 return 10; 110 111 return 0; 112} 113 114static void 115inphyattach(device_t parent, device_t self, void *aux) 116{ 117 struct mii_softc *sc = device_private(self); 118 struct mii_attach_args *ma = aux; 119 struct mii_data *mii = ma->mii_data; 120 const struct mii_phydesc *mpd; 121 122 mpd = mii_phy_match(ma, inphys); 123 aprint_naive(": Media interface\n"); 124 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 125 126 sc->mii_dev = self; 127 sc->mii_inst = mii->mii_instance; 128 sc->mii_phy = ma->mii_phyno; 129 sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 130 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 131 sc->mii_mpd_rev = MII_REV(ma->mii_id2); 132 sc->mii_funcs = &inphy_funcs; 133 sc->mii_pdata = mii; 134 sc->mii_flags = ma->mii_flags; 135 136 mii_lock(mii); 137 138 PHY_RESET(sc); 139 140 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 141 sc->mii_capabilities &= ma->mii_capmask; 142 143 mii_unlock(mii); 144 145 mii_phy_add_media(sc); 146} 147 148static int 149inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 150{ 151 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 152 uint16_t reg; 153 154 KASSERT(mii_locked(mii)); 155 156 switch (cmd) { 157 case MII_POLLSTAT: 158 /* If we're not polling our PHY instance, just return. */ 159 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 160 return 0; 161 break; 162 163 case MII_MEDIACHG: 164 /* 165 * If the media indicates a different PHY instance, 166 * isolate ourselves. 167 */ 168 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 169 PHY_READ(sc, MII_BMCR, ®); 170 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 171 return 0; 172 } 173 174 /* If the interface is not up, don't do anything. */ 175 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 176 break; 177 178 mii_phy_setmedia(sc); 179 break; 180 181 case MII_TICK: 182 /* If we're not currently selected, just return. */ 183 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 184 return 0; 185 186 if (mii_phy_tick(sc) == EJUSTRETURN) 187 return 0; 188 break; 189 190 case MII_DOWN: 191 mii_phy_down(sc); 192 return 0; 193 } 194 195 /* Update the media status. */ 196 mii_phy_status(sc); 197 198 /* Callback if something changed. */ 199 mii_phy_update(sc, cmd); 200 return 0; 201} 202 203static void 204inphy_status(struct mii_softc *sc) 205{ 206 struct mii_data *mii = sc->mii_pdata; 207 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 208 uint16_t bmsr, bmcr, scr; 209 210 KASSERT(mii_locked(mii)); 211 212 mii->mii_media_status = IFM_AVALID; 213 mii->mii_media_active = IFM_ETHER; 214 215 PHY_READ(sc, MII_BMSR, &bmsr); 216 PHY_READ(sc, MII_BMSR, &bmsr); 217 if (bmsr & BMSR_LINK) 218 mii->mii_media_status |= IFM_ACTIVE; 219 220 PHY_READ(sc, MII_BMCR, &bmcr); 221 if (bmcr & BMCR_ISO) { 222 mii->mii_media_active |= IFM_NONE; 223 mii->mii_media_status = 0; 224 return; 225 } 226 227 if (bmcr & BMCR_LOOP) 228 mii->mii_media_active |= IFM_LOOP; 229 230 if (bmcr & BMCR_AUTOEN) { 231 if ((bmsr & BMSR_ACOMP) == 0) { 232 /* Erg, still trying, I guess... */ 233 mii->mii_media_active |= IFM_NONE; 234 return; 235 } 236 237 PHY_READ(sc, MII_INPHY_SCR, &scr); 238 if (scr & SCR_S100) 239 mii->mii_media_active |= IFM_100_TX; 240 else if ((bmsr & BMSR_100T4) && (scr & SCR_T4)) 241 mii->mii_media_active |= IFM_100_T4; 242 else 243 mii->mii_media_active |= IFM_10_T; 244 245 if (scr & SCR_FDX) 246 mii->mii_media_active |= IFM_FDX; 247 else 248 mii->mii_media_active |= IFM_HDX; 249 250 if (mii->mii_media_active & IFM_FDX) 251 mii->mii_media_active |= mii_phy_flowstatus(sc); 252 } else 253 mii->mii_media_active = ife->ifm_media; 254} 255