1 /* $NetBSD: nsphyter.c,v 1.24 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 DP83843 `PHYTER' ethernet 10/100 PHY 71 * Data Sheet available from www.national.com 72 * 73 * We also support the DP83815 MacPHYER internal PHY since, for our 74 * purposes, they are compatible. 75 */ 76 77 #include <sys/cdefs.h> 78 __KERNEL_RCSID(0, "$NetBSD: nsphyter.c,v 1.24 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/nsphyterreg.h> 95 96 static int nsphytermatch(struct device *, struct cfdata *, void *); 97 static void nsphyterattach(struct device *, struct device *, void *); 98 99 CFATTACH_DECL(nsphyter, sizeof(struct mii_softc), 100 nsphytermatch, nsphyterattach, mii_phy_detach, mii_phy_activate); 101 102 static int nsphyter_service(struct mii_softc *, struct mii_data *, int); 103 static void nsphyter_status(struct mii_softc *); 104 105 static const struct mii_phy_funcs nsphyter_funcs = { 106 nsphyter_service, nsphyter_status, mii_phy_reset, 107 }; 108 109 static const struct mii_phydesc nsphyters[] = { 110 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83843, 111 MII_STR_xxNATSEMI_DP83843 }, 112 113 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83847, 114 MII_STR_xxNATSEMI_DP83847 }, 115 116 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83815, 117 MII_STR_xxNATSEMI_DP83815 }, 118 119 { 0, 0, 120 NULL }, 121 }; 122 123 static int 124 nsphytermatch(struct device *parent __unused, struct cfdata *match __unused, 125 void *aux) 126 { 127 struct mii_attach_args *ma = aux; 128 129 if (mii_phy_match(ma, nsphyters) != NULL) 130 return (10); 131 132 return (0); 133 } 134 135 static void 136 nsphyterattach(struct device *parent __unused, struct device *self, void *aux) 137 { 138 struct mii_softc *sc = (struct mii_softc *)self; 139 struct mii_attach_args *ma = aux; 140 struct mii_data *mii = ma->mii_data; 141 const struct mii_phydesc *mpd; 142 143 mpd = mii_phy_match(ma, nsphyters); 144 aprint_naive(": Media interface\n"); 145 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 146 147 sc->mii_inst = mii->mii_instance; 148 sc->mii_phy = ma->mii_phyno; 149 sc->mii_funcs = &nsphyter_funcs; 150 sc->mii_pdata = mii; 151 sc->mii_flags = ma->mii_flags; 152 sc->mii_anegticks = 5; 153 154 PHY_RESET(sc); 155 156 sc->mii_capabilities = 157 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 158 aprint_normal("%s: ", sc->mii_dev.dv_xname); 159 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 160 aprint_error("no media present"); 161 else 162 mii_phy_add_media(sc); 163 aprint_normal("\n"); 164 } 165 166 static int 167 nsphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 168 { 169 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 170 int reg; 171 172 switch (cmd) { 173 case MII_POLLSTAT: 174 /* 175 * If we're not polling our PHY instance, just return. 176 */ 177 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 178 return (0); 179 break; 180 181 case MII_MEDIACHG: 182 /* 183 * If the media indicates a different PHY instance, 184 * isolate ourselves. 185 */ 186 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 187 reg = PHY_READ(sc, MII_BMCR); 188 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 189 return (0); 190 } 191 192 /* 193 * If the interface is not up, don't do anything. 194 */ 195 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 196 break; 197 198 mii_phy_setmedia(sc); 199 break; 200 201 case MII_TICK: 202 /* 203 * If we're not currently selected, just return. 204 */ 205 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 206 return (0); 207 208 if (mii_phy_tick(sc) == EJUSTRETURN) 209 return (0); 210 break; 211 212 case MII_DOWN: 213 mii_phy_down(sc); 214 return (0); 215 } 216 217 /* Update the media status. */ 218 mii_phy_status(sc); 219 220 /* Callback if something changed. */ 221 mii_phy_update(sc, cmd); 222 return (0); 223 } 224 225 static void 226 nsphyter_status(struct mii_softc *sc) 227 { 228 struct mii_data *mii = sc->mii_pdata; 229 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 230 int bmsr, bmcr, physts; 231 232 mii->mii_media_status = IFM_AVALID; 233 mii->mii_media_active = IFM_ETHER; 234 235 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 236 physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS); 237 238 if (physts & PHYSTS_LINK) 239 mii->mii_media_status |= IFM_ACTIVE; 240 241 bmcr = PHY_READ(sc, MII_BMCR); 242 if (bmcr & BMCR_ISO) { 243 mii->mii_media_active |= IFM_NONE; 244 mii->mii_media_status = 0; 245 return; 246 } 247 248 if (bmcr & BMCR_LOOP) 249 mii->mii_media_active |= IFM_LOOP; 250 251 if (bmcr & BMCR_AUTOEN) { 252 /* 253 * The media status bits are only valid of autonegotiation 254 * has completed (or it's disabled). 255 */ 256 if ((bmsr & BMSR_ACOMP) == 0) { 257 /* Erg, still trying, I guess... */ 258 mii->mii_media_active |= IFM_NONE; 259 return; 260 } 261 262 if (physts & PHYSTS_SPEED10) 263 mii->mii_media_active |= IFM_10_T; 264 else 265 mii->mii_media_active |= IFM_100_TX; 266 if (physts & PHYSTS_DUPLEX) 267 mii->mii_media_active |= 268 IFM_FDX | mii_phy_flowstatus(sc); 269 } else 270 mii->mii_media_active = ife->ifm_media; 271 } 272