inphy.c revision 1.51
1 /* $NetBSD: inphy.c,v 1.51 2009/02/16 08:00:42 cegger 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 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by Manuel Bouyer. 47 * 4. The name of the author may not be used to endorse or promote products 48 * derived from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 54 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 55 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 59 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62 /* 63 * driver for Intel's i82555 ethernet 10/100 PHY 64 * Data Sheet available from www.intel.com 65 */ 66 67 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: inphy.c,v 1.51 2009/02/16 08:00:42 cegger Exp $"); 69 70 #include <sys/param.h> 71 #include <sys/systm.h> 72 #include <sys/kernel.h> 73 #include <sys/device.h> 74 #include <sys/socket.h> 75 #include <sys/errno.h> 76 77 #include <net/if.h> 78 #include <net/if_media.h> 79 80 #include <dev/mii/mii.h> 81 #include <dev/mii/miivar.h> 82 #include <dev/mii/miidevs.h> 83 84 #include <dev/mii/inphyreg.h> 85 86 static int inphymatch(device_t, cfdata_t, void *); 87 static void inphyattach(device_t, device_t, void *); 88 89 CFATTACH_DECL_NEW(inphy, sizeof(struct mii_softc), 90 inphymatch, inphyattach, mii_phy_detach, mii_phy_activate); 91 92 static int inphy_service(struct mii_softc *, struct mii_data *, int); 93 static void inphy_status(struct mii_softc *); 94 95 static const struct mii_phy_funcs inphy_funcs = { 96 inphy_service, inphy_status, mii_phy_reset, 97 }; 98 99 static const struct mii_phydesc inphys[] = { 100 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82555, 101 MII_STR_yyINTEL_I82555 }, 102 103 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562EH, 104 MII_STR_yyINTEL_I82562EH }, 105 106 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562EM, 107 MII_STR_yyINTEL_I82562EM }, 108 109 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562ET, 110 MII_STR_yyINTEL_I82562ET }, 111 112 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562G, 113 MII_STR_yyINTEL_I82562G }, 114 115 { 0, 0, 116 NULL }, 117 }; 118 119 static int 120 inphymatch(device_t parent, cfdata_t match, void *aux) 121 { 122 struct mii_attach_args *ma = aux; 123 124 if (mii_phy_match(ma, inphys) != NULL) 125 return (10); 126 127 return (0); 128 } 129 130 static void 131 inphyattach(device_t parent, device_t self, void *aux) 132 { 133 struct mii_softc *sc = device_private(self); 134 struct mii_attach_args *ma = aux; 135 struct mii_data *mii = ma->mii_data; 136 const struct mii_phydesc *mpd; 137 138 mpd = mii_phy_match(ma, inphys); 139 aprint_naive(": Media interface\n"); 140 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 141 142 sc->mii_dev = self; 143 sc->mii_inst = mii->mii_instance; 144 sc->mii_phy = ma->mii_phyno; 145 sc->mii_funcs = &inphy_funcs; 146 sc->mii_pdata = mii; 147 sc->mii_flags = ma->mii_flags; 148 sc->mii_anegticks = MII_ANEGTICKS; 149 150 PHY_RESET(sc); 151 152 sc->mii_capabilities = 153 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 154 aprint_normal_dev(self, ""); 155 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 156 aprint_error("no media present"); 157 else 158 mii_phy_add_media(sc); 159 aprint_normal("\n"); 160 } 161 162 static int 163 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 164 { 165 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 166 int reg; 167 168 switch (cmd) { 169 case MII_POLLSTAT: 170 /* 171 * If we're not polling our PHY instance, just return. 172 */ 173 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 174 return (0); 175 break; 176 177 case MII_MEDIACHG: 178 /* 179 * If the media indicates a different PHY instance, 180 * isolate ourselves. 181 */ 182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 183 reg = PHY_READ(sc, MII_BMCR); 184 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 185 return (0); 186 } 187 188 /* 189 * If the interface is not up, don't do anything. 190 */ 191 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 192 break; 193 194 mii_phy_setmedia(sc); 195 break; 196 197 case MII_TICK: 198 /* 199 * If we're not currently selected, just return. 200 */ 201 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 202 return (0); 203 204 if (mii_phy_tick(sc) == EJUSTRETURN) 205 return (0); 206 break; 207 208 case MII_DOWN: 209 mii_phy_down(sc); 210 return (0); 211 } 212 213 /* Update the media status. */ 214 mii_phy_status(sc); 215 216 /* Callback if something changed. */ 217 mii_phy_update(sc, cmd); 218 return (0); 219 } 220 221 static void 222 inphy_status(struct mii_softc *sc) 223 { 224 struct mii_data *mii = sc->mii_pdata; 225 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 226 int bmsr, bmcr, scr; 227 228 mii->mii_media_status = IFM_AVALID; 229 mii->mii_media_active = IFM_ETHER; 230 231 bmsr = PHY_READ(sc, MII_BMSR) | 232 PHY_READ(sc, MII_BMSR); 233 if (bmsr & BMSR_LINK) 234 mii->mii_media_status |= IFM_ACTIVE; 235 236 bmcr = PHY_READ(sc, MII_BMCR); 237 if (bmcr & BMCR_ISO) { 238 mii->mii_media_active |= IFM_NONE; 239 mii->mii_media_status = 0; 240 return; 241 } 242 243 if (bmcr & BMCR_LOOP) 244 mii->mii_media_active |= IFM_LOOP; 245 246 if (bmcr & BMCR_AUTOEN) { 247 if ((bmsr & BMSR_ACOMP) == 0) { 248 /* Erg, still trying, I guess... */ 249 mii->mii_media_active |= IFM_NONE; 250 return; 251 } 252 253 scr = PHY_READ(sc, MII_INPHY_SCR); 254 if (scr & SCR_S100) 255 mii->mii_media_active |= IFM_100_TX; 256 else if ((bmsr & BMSR_100T4) && (scr & SCR_T4)) 257 mii->mii_media_active |= IFM_100_T4; 258 else 259 mii->mii_media_active |= IFM_10_T; 260 if (scr & SCR_FDX) 261 mii->mii_media_active |= IFM_FDX; 262 263 if (mii->mii_media_active & IFM_FDX) 264 mii->mii_media_active |= mii_phy_flowstatus(sc); 265 } else 266 mii->mii_media_active = ife->ifm_media; 267 } 268
Indexes created Tue Sep 23 13:09:54 GMT 2025