1 /* $NetBSD: gphyter.c,v 1.17 2006/10/12 01:31:25 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000, 2001 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 * driver for National Semiconductor's DP83891 and DP83861 `Gig PHYTER' 71 * ethernet 10/100/1000 PHYs. The DP83891 is an older, non-firmware- 72 * driven version of the DP83861. 73 * 74 * Data Sheet available from www.national.com 75 */ 76 77 #include <sys/cdefs.h> 78 __KERNEL_RCSID(0, "$NetBSD: gphyter.c,v 1.17 2006/10/12 01:31:25 christos Exp $"); 79 80 #include <sys/param.h> 81 #include <sys/systm.h> 82 #include <sys/kernel.h> 83 #include <sys/device.h> 84 #include <sys/socket.h> 85 #include <sys/errno.h> 86 87 #include <net/if.h> 88 #include <net/if_media.h> 89 90 #include <dev/mii/mii.h> 91 #include <dev/mii/miivar.h> 92 #include <dev/mii/miidevs.h> 93 94 #include <dev/mii/gphyterreg.h> 95 96 static int gphytermatch(struct device *, struct cfdata *, void *); 97 static void gphyterattach(struct device *, struct device *, void *); 98 99 CFATTACH_DECL(gphyter, sizeof(struct mii_softc), 100 gphytermatch, gphyterattach, mii_phy_detach, mii_phy_activate); 101 102 static int gphyter_service(struct mii_softc *, struct mii_data *, int); 103 static void gphyter_status(struct mii_softc *); 104 105 static const struct mii_phy_funcs gphyter_funcs = { 106 gphyter_service, gphyter_status, mii_phy_reset, 107 }; 108 109 static const struct mii_phydesc gphyters[] = { 110 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83861, 111 MII_STR_xxNATSEMI_DP83861 }, 112 113 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83891, 114 MII_STR_xxNATSEMI_DP83891 }, 115 116 { 0, 0, 117 NULL }, 118 }; 119 120 static int 121 gphytermatch(struct device *parent __unused, struct cfdata *match __unused, 122 void *aux) 123 { 124 struct mii_attach_args *ma = aux; 125 126 if (mii_phy_match(ma, gphyters) != NULL) 127 return (10); 128 129 return (0); 130 } 131 132 static void 133 gphyterattach(struct device *parent __unused, struct device *self, void *aux) 134 { 135 struct mii_softc *sc = (struct mii_softc *)self; 136 struct mii_attach_args *ma = aux; 137 struct mii_data *mii = ma->mii_data; 138 const struct mii_phydesc *mpd; 139 int anar, strap; 140 141 mpd = mii_phy_match(ma, gphyters); 142 aprint_naive(": Media interface\n"); 143 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 144 145 sc->mii_inst = mii->mii_instance; 146 sc->mii_phy = ma->mii_phyno; 147 sc->mii_funcs = &gphyter_funcs; 148 sc->mii_pdata = mii; 149 sc->mii_flags = ma->mii_flags; 150 sc->mii_anegticks = 5; 151 152 PHY_RESET(sc); 153 154 sc->mii_capabilities = 155 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 156 if (sc->mii_capabilities & BMSR_EXTSTAT) 157 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 158 159 /* 160 * The Gig PHYTER seems to have the 10baseT BMSR bits 161 * hard-wired to 0, even though the device supports 162 * 10baseT. What we do instead is read the post-reset 163 * ANAR, who's 10baseT-related bits are set by strapping 164 * pin 180, and fake the BMSR bits. 165 */ 166 anar = PHY_READ(sc, MII_ANAR); 167 if (anar & ANAR_10) 168 sc->mii_capabilities |= (BMSR_10THDX & ma->mii_capmask); 169 if (anar & ANAR_10_FD) 170 sc->mii_capabilities |= (BMSR_10TFDX & ma->mii_capmask); 171 172 aprint_normal("%s: ", sc->mii_dev.dv_xname); 173 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 174 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 175 aprint_error("no media present"); 176 else 177 mii_phy_add_media(sc); 178 aprint_normal("\n"); 179 180 strap = PHY_READ(sc, MII_GPHYTER_STRAP); 181 aprint_normal("%s: strapped to %s mode", sc->mii_dev.dv_xname, 182 (strap & STRAP_MS_VAL) ? "master" : "slave"); 183 if (strap & STRAP_NC_MODE) 184 aprint_normal(", pre-C5 BCM5400 compat enabled"); 185 aprint_normal("\n"); 186 } 187 188 static int 189 gphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 190 { 191 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 192 int reg; 193 194 switch (cmd) { 195 case MII_POLLSTAT: 196 /* 197 * If we're not polling our PHY instance, just return. 198 */ 199 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 200 return (0); 201 break; 202 203 case MII_MEDIACHG: 204 /* 205 * If the media indicates a different PHY instance, 206 * isolate ourselves. 207 */ 208 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 209 reg = PHY_READ(sc, MII_BMCR); 210 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 211 return (0); 212 } 213 214 /* 215 * If the interface is not up, don't do anything. 216 */ 217 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 218 break; 219 220 mii_phy_setmedia(sc); 221 break; 222 223 case MII_TICK: 224 /* 225 * If we're not currently selected, just return. 226 */ 227 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 228 return (0); 229 230 if (mii_phy_tick(sc) == EJUSTRETURN) 231 return (0); 232 break; 233 234 case MII_DOWN: 235 mii_phy_down(sc); 236 return (0); 237 } 238 239 /* Update the media status. */ 240 mii_phy_status(sc); 241 242 /* Callback if something changed. */ 243 mii_phy_update(sc, cmd); 244 return (0); 245 } 246 247 static void 248 gphyter_status(struct mii_softc *sc) 249 { 250 struct mii_data *mii = sc->mii_pdata; 251 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 252 int bmsr, bmcr, physup, gtsr; 253 254 mii->mii_media_status = IFM_AVALID; 255 mii->mii_media_active = IFM_ETHER; 256 257 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 258 259 physup = PHY_READ(sc, MII_GPHYTER_PHY_SUP); 260 261 if (physup & PHY_SUP_LINK) 262 mii->mii_media_status |= IFM_ACTIVE; 263 264 bmcr = PHY_READ(sc, MII_BMCR); 265 if (bmcr & BMCR_ISO) { 266 mii->mii_media_active |= IFM_NONE; 267 mii->mii_media_status = 0; 268 return; 269 } 270 271 if (bmcr & BMCR_LOOP) 272 mii->mii_media_active |= IFM_LOOP; 273 274 if (bmcr & BMCR_AUTOEN) { 275 /* 276 * The media status bits are only valid of autonegotiation 277 * has completed (or it's disabled). 278 */ 279 if ((bmsr & BMSR_ACOMP) == 0) { 280 /* Erg, still trying, I guess... */ 281 mii->mii_media_active |= IFM_NONE; 282 return; 283 } 284 285 switch (physup & (PHY_SUP_SPEED1|PHY_SUP_SPEED0)) { 286 case PHY_SUP_SPEED1: 287 mii->mii_media_active |= IFM_1000_T; 288 gtsr = PHY_READ(sc, MII_100T2SR); 289 if (gtsr & GTSR_MS_RES) 290 mii->mii_media_active |= IFM_ETH_MASTER; 291 break; 292 293 case PHY_SUP_SPEED0: 294 mii->mii_media_active |= IFM_100_TX; 295 break; 296 297 case 0: 298 mii->mii_media_active |= IFM_10_T; 299 break; 300 301 default: 302 mii->mii_media_active |= IFM_NONE; 303 mii->mii_media_status = 0; 304 } 305 if (physup & PHY_SUP_DUPLEX) 306 mii->mii_media_active |= 307 IFM_FDX | mii_phy_flowstatus(sc); 308 } else 309 mii->mii_media_active = ife->ifm_media; 310 } 311