1 /* $NetBSD: inphy.c,v 1.58 2019/03/25 09:29:08 msaitoh 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 1.58 2019/03/25 09:29:08 msaitoh 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 81 static int inphymatch(device_t, cfdata_t, void *); 82 static void inphyattach(device_t, device_t, void *); 83 84 CFATTACH_DECL_NEW(inphy, sizeof(struct mii_softc), 85 inphymatch, inphyattach, mii_phy_detach, mii_phy_activate); 86 87 static int inphy_service(struct mii_softc *, struct mii_data *, int); 88 static void inphy_status(struct mii_softc *); 89 90 static const struct mii_phy_funcs inphy_funcs = { 91 inphy_service, inphy_status, mii_phy_reset, 92 }; 93 94 static 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 }; 102 103 static int 104 inphymatch(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 } 113 114 static void 115 inphyattach(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 sc->mii_anegticks = MII_ANEGTICKS; 136 137 PHY_RESET(sc); 138 139 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 140 sc->mii_capabilities &= ma->mii_capmask; 141 aprint_normal_dev(self, ""); 142 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 143 aprint_error("no media present"); 144 else 145 mii_phy_add_media(sc); 146 aprint_normal("\n"); 147 } 148 149 static int 150 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 151 { 152 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 153 uint16_t reg; 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 inphy_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, scr; 208 209 mii->mii_media_status = IFM_AVALID; 210 mii->mii_media_active = IFM_ETHER; 211 212 PHY_READ(sc, MII_BMSR, &bmsr); 213 PHY_READ(sc, MII_BMSR, &bmsr); 214 if (bmsr & BMSR_LINK) 215 mii->mii_media_status |= IFM_ACTIVE; 216 217 PHY_READ(sc, MII_BMCR, &bmcr); 218 if (bmcr & BMCR_ISO) { 219 mii->mii_media_active |= IFM_NONE; 220 mii->mii_media_status = 0; 221 return; 222 } 223 224 if (bmcr & BMCR_LOOP) 225 mii->mii_media_active |= IFM_LOOP; 226 227 if (bmcr & BMCR_AUTOEN) { 228 if ((bmsr & BMSR_ACOMP) == 0) { 229 /* Erg, still trying, I guess... */ 230 mii->mii_media_active |= IFM_NONE; 231 return; 232 } 233 234 PHY_READ(sc, MII_INPHY_SCR, &scr); 235 if (scr & SCR_S100) 236 mii->mii_media_active |= IFM_100_TX; 237 else if ((bmsr & BMSR_100T4) && (scr & SCR_T4)) 238 mii->mii_media_active |= IFM_100_T4; 239 else 240 mii->mii_media_active |= IFM_10_T; 241 242 if (scr & SCR_FDX) 243 mii->mii_media_active |= IFM_FDX; 244 else 245 mii->mii_media_active |= IFM_HDX; 246 247 if (mii->mii_media_active & IFM_FDX) 248 mii->mii_media_active |= mii_phy_flowstatus(sc); 249 } else 250 mii->mii_media_active = ife->ifm_media; 251 } 252