inphy.c revision 1.57
1 /* $NetBSD: inphy.c,v 1.57 2019/02/24 17:22:21 christos 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 1.57 2019/02/24 17:22:21 christos 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 /* 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 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 } 207 208 static void 209 inphy_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 uint16_t bmsr, bmcr, scr; 214 215 mii->mii_media_status = IFM_AVALID; 216 mii->mii_media_active = IFM_ETHER; 217 218 PHY_READ(sc, MII_BMSR, &bmsr); 219 PHY_READ(sc, MII_BMSR, &bmsr); 220 if (bmsr & BMSR_LINK) 221 mii->mii_media_status |= IFM_ACTIVE; 222 223 PHY_READ(sc, MII_BMCR, &bmcr); 224 if (bmcr & BMCR_ISO) { 225 mii->mii_media_active |= IFM_NONE; 226 mii->mii_media_status = 0; 227 return; 228 } 229 230 if (bmcr & BMCR_LOOP) 231 mii->mii_media_active |= IFM_LOOP; 232 233 if (bmcr & BMCR_AUTOEN) { 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_INPHY_SCR, &scr); 241 if (scr & SCR_S100) 242 mii->mii_media_active |= IFM_100_TX; 243 else if ((bmsr & BMSR_100T4) && (scr & SCR_T4)) 244 mii->mii_media_active |= IFM_100_T4; 245 else 246 mii->mii_media_active |= IFM_10_T; 247 248 if (scr & SCR_FDX) 249 mii->mii_media_active |= IFM_FDX; 250 else 251 mii->mii_media_active |= IFM_HDX; 252 253 if (mii->mii_media_active & IFM_FDX) 254 mii->mii_media_active |= mii_phy_flowstatus(sc); 255 } else 256 mii->mii_media_active = ife->ifm_media; 257 } 258
Indexes created Fri Sep 26 20:09:58 GMT 2025