iophy.c revision 1.37
1 /* $NetBSD: iophy.c,v 1.37 2014/06/16 16:48:16 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 * Intel 82553 PHY driver 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: iophy.c,v 1.37 2014/06/16 16:48:16 msaitoh Exp $"); 63 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/device.h> 68 #include <sys/socket.h> 69 70 #include <net/if.h> 71 #include <net/if_media.h> 72 73 #include <dev/mii/mii.h> 74 #include <dev/mii/miivar.h> 75 #include <dev/mii/miidevs.h> 76 77 #include <dev/mii/iophyreg.h> 78 79 static int iophymatch(device_t, cfdata_t, void *); 80 static void iophyattach(device_t, device_t, void *); 81 82 CFATTACH_DECL_NEW(iophy, sizeof(struct mii_softc), 83 iophymatch, iophyattach, mii_phy_detach, mii_phy_activate); 84 85 static int iophy_service(struct mii_softc *, struct mii_data *, int); 86 static void iophy_status(struct mii_softc *); 87 88 static const struct mii_phy_funcs iophy_funcs = { 89 iophy_service, iophy_status, mii_phy_reset, 90 }; 91 92 static const struct mii_phydesc iophys[] = { 93 { MII_OUI_xxINTEL, MII_MODEL_xxINTEL_I82553, 94 MII_STR_xxINTEL_I82553 }, 95 96 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82553, 97 MII_STR_yyINTEL_I82553 }, 98 99 { 0, 0, 100 NULL }, 101 }; 102 103 static int 104 iophymatch(device_t parent, cfdata_t match, void *aux) 105 { 106 struct mii_attach_args *ma = aux; 107 108 if (mii_phy_match(ma, iophys) != NULL) 109 return (10); 110 111 return (0); 112 } 113 114 static void 115 iophyattach(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, iophys); 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_funcs = &iophy_funcs; 130 sc->mii_pdata = mii; 131 sc->mii_flags = ma->mii_flags; 132 sc->mii_anegticks = MII_ANEGTICKS; 133 134 PHY_RESET(sc); 135 136 sc->mii_capabilities = 137 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 138 aprint_normal_dev(self, ""); 139 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 140 aprint_error("no media present"); 141 else 142 mii_phy_add_media(sc); 143 aprint_normal("\n"); 144 } 145 146 static int 147 iophy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 148 { 149 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 150 int reg; 151 152 switch (cmd) { 153 case MII_POLLSTAT: 154 /* 155 * If we're not polling our PHY instance, just return. 156 */ 157 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 158 return (0); 159 break; 160 161 case MII_MEDIACHG: 162 /* 163 * If the media indicates a different PHY instance, 164 * isolate ourselves. 165 */ 166 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 167 reg = PHY_READ(sc, MII_BMCR); 168 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 169 return (0); 170 } 171 172 /* 173 * If the interface is not up, don't do anything. 174 */ 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 /* 183 * If we're not currently selected, just return. 184 */ 185 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 186 return (0); 187 188 if (mii_phy_tick(sc) == EJUSTRETURN) 189 return (0); 190 break; 191 192 case MII_DOWN: 193 mii_phy_down(sc); 194 return (0); 195 } 196 197 /* Update the media status. */ 198 mii_phy_status(sc); 199 200 /* Callback if something changed. */ 201 mii_phy_update(sc, cmd); 202 return (0); 203 } 204 205 static void 206 iophy_status(struct mii_softc *sc) 207 { 208 struct mii_data *mii = sc->mii_pdata; 209 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 210 int bmsr, bmcr, ext0; 211 212 mii->mii_media_status = IFM_AVALID; 213 mii->mii_media_active = IFM_ETHER; 214 215 bmsr = PHY_READ(sc, MII_BMSR) | 216 PHY_READ(sc, MII_BMSR); 217 if (bmsr & BMSR_LINK) 218 mii->mii_media_status |= IFM_ACTIVE; 219 220 bmcr = PHY_READ(sc, MII_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 ext0 = PHY_READ(sc, MII_IOPHY_EXT0); 237 238 if (ext0 & EXT0_SPEED) { 239 if ((bmsr & BMSR_100TXFDX) || (bmsr & BMSR_100TXHDX)) { 240 mii->mii_media_active |= IFM_100_TX; 241 } else if (bmsr & BMSR_100T4) { 242 mii->mii_media_active |= IFM_100_T4; 243 } 244 } else 245 mii->mii_media_active |= IFM_10_T; 246 247 if (ext0 & EXT0_DUPLEX) 248 mii->mii_media_active |= IFM_FDX; 249 else 250 mii->mii_media_active |= IFM_HDX; 251 } else 252 mii->mii_media_active = ife->ifm_media; 253 } 254
Indexes created Wed Sep 24 05:09:52 GMT 2025