iophy.c revision 1.22
1 /* $NetBSD: iophy.c,v 1.22 2004/08/23 06:16:06 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Manuel Bouyer. 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 /* 70 * Intel 82553 PHY driver 71 */ 72 73 #include <sys/cdefs.h> 74 __KERNEL_RCSID(0, "$NetBSD: iophy.c,v 1.22 2004/08/23 06:16:06 thorpej Exp $"); 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/kernel.h> 79 #include <sys/device.h> 80 #include <sys/socket.h> 81 82 #include <net/if.h> 83 #include <net/if_media.h> 84 85 #include <dev/mii/mii.h> 86 #include <dev/mii/miivar.h> 87 #include <dev/mii/miidevs.h> 88 89 #include <dev/mii/iophyreg.h> 90 91 static int iophymatch(struct device *, struct cfdata *, void *); 92 static void iophyattach(struct device *, struct device *, void *); 93 94 CFATTACH_DECL(iophy, sizeof(struct mii_softc), 95 iophymatch, iophyattach, mii_phy_detach, mii_phy_activate); 96 97 static int iophy_service(struct mii_softc *, struct mii_data *, int); 98 static void iophy_status(struct mii_softc *); 99 100 static const struct mii_phy_funcs iophy_funcs = { 101 iophy_service, iophy_status, mii_phy_reset, 102 }; 103 104 static const struct mii_phydesc iophys[] = { 105 { MII_OUI_xxINTEL, MII_MODEL_xxINTEL_I82553, 106 MII_STR_xxINTEL_I82553 }, 107 108 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82553, 109 MII_STR_yyINTEL_I82553 }, 110 111 { 0, 0, 112 NULL }, 113 }; 114 115 static int 116 iophymatch(struct device *parent, struct cfdata *match, void *aux) 117 { 118 struct mii_attach_args *ma = aux; 119 120 if (mii_phy_match(ma, iophys) != NULL) 121 return (10); 122 123 return (0); 124 } 125 126 static void 127 iophyattach(struct device *parent, struct device *self, void *aux) 128 { 129 struct mii_softc *sc = (struct mii_softc *)self; 130 struct mii_attach_args *ma = aux; 131 struct mii_data *mii = ma->mii_data; 132 const struct mii_phydesc *mpd; 133 134 mpd = mii_phy_match(ma, iophys); 135 aprint_naive(": Media interface\n"); 136 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 137 138 sc->mii_inst = mii->mii_instance; 139 sc->mii_phy = ma->mii_phyno; 140 sc->mii_funcs = &iophy_funcs; 141 sc->mii_pdata = mii; 142 sc->mii_flags = ma->mii_flags; 143 sc->mii_anegticks = 5; 144 145 PHY_RESET(sc); 146 147 sc->mii_capabilities = 148 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 149 aprint_normal("%s: ", sc->mii_dev.dv_xname); 150 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 151 aprint_error("no media present"); 152 else 153 mii_phy_add_media(sc); 154 aprint_normal("\n"); 155 } 156 157 static int 158 iophy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 159 { 160 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 161 int reg; 162 163 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 164 return (ENXIO); 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 reg = 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 iophy_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 int bmsr, bmcr, ext0; 225 226 mii->mii_media_status = IFM_AVALID; 227 mii->mii_media_active = IFM_ETHER; 228 229 bmsr = PHY_READ(sc, MII_BMSR) | 230 PHY_READ(sc, MII_BMSR); 231 if (bmsr & BMSR_LINK) 232 mii->mii_media_status |= IFM_ACTIVE; 233 234 bmcr = PHY_READ(sc, MII_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 ext0 = PHY_READ(sc, MII_IOPHY_EXT0); 251 252 if (ext0 & EXT0_SPEED) 253 if (bmsr & BMSR_100T4) { 254 mii->mii_media_active |= IFM_100_T4; 255 return; 256 } else { 257 mii->mii_media_active |= IFM_100_TX; 258 } 259 else 260 mii->mii_media_active |= IFM_10_T; 261 262 if (ext0 & EXT0_DUPLEX) 263 mii->mii_media_active |= IFM_FDX; 264 } else 265 mii->mii_media_active = ife->ifm_media; 266 } 267
Indexes created Fri Sep 26 08:10:20 GMT 2025