inphy.c revision 1.56
1 /* $NetBSD: inphy.c,v 1.56 2019/01/22 03:42:27 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 1.56 2019/01/22 03:42:27 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_OUI_yyINTEL, MII_MODEL_yyINTEL_I82555, 96 MII_STR_yyINTEL_I82555 }, 97 98 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562EH, 99 MII_STR_yyINTEL_I82562EH }, 100 101 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562EM, 102 MII_STR_yyINTEL_I82562EM }, 103 104 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562ET, 105 MII_STR_yyINTEL_I82562ET }, 106 107 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562G, 108 MII_STR_yyINTEL_I82562G }, 109 110 { 0, 0, 111 NULL }, 112 }; 113 114 static int 115 inphymatch(device_t parent, cfdata_t match, void *aux) 116 { 117 struct mii_attach_args *ma = aux; 118 119 if (mii_phy_match(ma, inphys) != NULL) 120 return (10); 121 122 return (0); 123 } 124 125 static void 126 inphyattach(device_t parent, device_t self, void *aux) 127 { 128 struct mii_softc *sc = device_private(self); 129 struct mii_attach_args *ma = aux; 130 struct mii_data *mii = ma->mii_data; 131 const struct mii_phydesc *mpd; 132 133 mpd = mii_phy_match(ma, inphys); 134 aprint_naive(": Media interface\n"); 135 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 136 137 sc->mii_dev = self; 138 sc->mii_inst = mii->mii_instance; 139 sc->mii_phy = ma->mii_phyno; 140 sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 141 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 142 sc->mii_mpd_rev = MII_REV(ma->mii_id2); 143 sc->mii_funcs = &inphy_funcs; 144 sc->mii_pdata = mii; 145 sc->mii_flags = ma->mii_flags; 146 sc->mii_anegticks = MII_ANEGTICKS; 147 148 PHY_RESET(sc); 149 150 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 151 sc->mii_capabilities &= ma->mii_capmask; 152 aprint_normal_dev(self, ""); 153 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 154 aprint_error("no media present"); 155 else 156 mii_phy_add_media(sc); 157 aprint_normal("\n"); 158 } 159 160 static int 161 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 162 { 163 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 164 uint16_t reg; 165 166 switch (cmd) { 167 case MII_POLLSTAT: 168 /* 169 * If we're not polling our PHY instance, just return. 170 */ 171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 172 return (0); 173 break; 174 175 case MII_MEDIACHG: 176 /* 177 * If the media indicates a different PHY instance, 178 * isolate ourselves. 179 */ 180 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 181 PHY_READ(sc, MII_BMCR, ®); 182 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 183 return (0); 184 } 185 186 /* 187 * If the interface is not up, don't do anything. 188 */ 189 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 190 break; 191 192 mii_phy_setmedia(sc); 193 break; 194 195 case MII_TICK: 196 /* 197 * If we're not currently selected, just return. 198 */ 199 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 200 return (0); 201 202 if (mii_phy_tick(sc) == EJUSTRETURN) 203 return (0); 204 break; 205 206 case MII_DOWN: 207 mii_phy_down(sc); 208 return (0); 209 } 210 211 /* Update the media status. */ 212 mii_phy_status(sc); 213 214 /* Callback if something changed. */ 215 mii_phy_update(sc, cmd); 216 return (0); 217 } 218 219 static void 220 inphy_status(struct mii_softc *sc) 221 { 222 struct mii_data *mii = sc->mii_pdata; 223 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 224 uint16_t bmsr, bmcr, scr; 225 226 mii->mii_media_status = IFM_AVALID; 227 mii->mii_media_active = IFM_ETHER; 228 229 PHY_READ(sc, MII_BMSR, &bmsr); 230 PHY_READ(sc, MII_BMSR, &bmsr); 231 if (bmsr & BMSR_LINK) 232 mii->mii_media_status |= IFM_ACTIVE; 233 234 PHY_READ(sc, MII_BMCR, &bmcr); 235 if (bmcr & BMCR_ISO) { 236 mii->mii_media_active |= IFM_NONE; 237 mii->mii_media_status = 0; 238 return; 239 } 240 241 if (bmcr & BMCR_LOOP) 242 mii->mii_media_active |= IFM_LOOP; 243 244 if (bmcr & BMCR_AUTOEN) { 245 if ((bmsr & BMSR_ACOMP) == 0) { 246 /* Erg, still trying, I guess... */ 247 mii->mii_media_active |= IFM_NONE; 248 return; 249 } 250 251 PHY_READ(sc, MII_INPHY_SCR, &scr); 252 if (scr & SCR_S100) 253 mii->mii_media_active |= IFM_100_TX; 254 else if ((bmsr & BMSR_100T4) && (scr & SCR_T4)) 255 mii->mii_media_active |= IFM_100_T4; 256 else 257 mii->mii_media_active |= IFM_10_T; 258 259 if (scr & SCR_FDX) 260 mii->mii_media_active |= IFM_FDX; 261 else 262 mii->mii_media_active |= IFM_HDX; 263 264 if (mii->mii_media_active & IFM_FDX) 265 mii->mii_media_active |= mii_phy_flowstatus(sc); 266 } else 267 mii->mii_media_active = ife->ifm_media; 268 } 269
Indexes created Tue Sep 23 21:09:50 GMT 2025