1 /* $NetBSD: inphy.c,v 1.48 2008/05/04 17:06:09 xtraeme 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 1.48 2008/05/04 17:06:09 xtraeme 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 if (!pmf_device_register(self, NULL, mii_phy_resume)) 162 aprint_error_dev(self, "couldn't establish power handler\n"); 163 } 164 165 static int 166 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 167 { 168 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 169 int reg; 170 171 switch (cmd) { 172 case MII_POLLSTAT: 173 /* 174 * If we're not polling our PHY instance, just return. 175 */ 176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 177 return (0); 178 break; 179 180 case MII_MEDIACHG: 181 /* 182 * If the media indicates a different PHY instance, 183 * isolate ourselves. 184 */ 185 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 186 reg = PHY_READ(sc, MII_BMCR); 187 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 188 return (0); 189 } 190 191 /* 192 * If the interface is not up, don't do anything. 193 */ 194 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 195 break; 196 197 mii_phy_setmedia(sc); 198 break; 199 200 case MII_TICK: 201 /* 202 * If we're not currently selected, just return. 203 */ 204 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 205 return (0); 206 207 if (mii_phy_tick(sc) == EJUSTRETURN) 208 return (0); 209 break; 210 211 case MII_DOWN: 212 mii_phy_down(sc); 213 return (0); 214 } 215 216 /* Update the media status. */ 217 mii_phy_status(sc); 218 219 /* Callback if something changed. */ 220 mii_phy_update(sc, cmd); 221 return (0); 222 } 223 224 static void 225 inphy_status(struct mii_softc *sc) 226 { 227 struct mii_data *mii = sc->mii_pdata; 228 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 229 int bmsr, bmcr, scr; 230 231 mii->mii_media_status = IFM_AVALID; 232 mii->mii_media_active = IFM_ETHER; 233 234 bmsr = PHY_READ(sc, MII_BMSR) | 235 PHY_READ(sc, MII_BMSR); 236 if (bmsr & BMSR_LINK) 237 mii->mii_media_status |= IFM_ACTIVE; 238 239 bmcr = PHY_READ(sc, MII_BMCR); 240 if (bmcr & BMCR_ISO) { 241 mii->mii_media_active |= IFM_NONE; 242 mii->mii_media_status = 0; 243 return; 244 } 245 246 if (bmcr & BMCR_LOOP) 247 mii->mii_media_active |= IFM_LOOP; 248 249 if (bmcr & BMCR_AUTOEN) { 250 if ((bmsr & BMSR_ACOMP) == 0) { 251 /* Erg, still trying, I guess... */ 252 mii->mii_media_active |= IFM_NONE; 253 return; 254 } 255 scr = PHY_READ(sc, MII_INPHY_SCR); 256 if ((bmsr & BMSR_100T4) && (scr & SCR_T4)) 257 mii->mii_media_active |= IFM_100_T4; 258 else if (scr & SCR_S100) 259 mii->mii_media_active |= IFM_100_TX; 260 else 261 mii->mii_media_active |= IFM_10_T; 262 if (scr & SCR_FDX) 263 mii->mii_media_active |= IFM_FDX; 264 } else 265 mii->mii_media_active = ife->ifm_media; 266 } 267