nsphyter.c revision 1.34
1 /* $NetBSD: nsphyter.c,v 1.34 2009/04/02 00:09:33 dyoung 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 * 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 National Semiconductor's DP83843 `PHYTER' ethernet 10/100 PHY 64 * Data Sheet available from www.national.com 65 * 66 * We also support the DP83815 MacPHYER internal PHY since, for our 67 * purposes, they are compatible. 68 */ 69 70 #include <sys/cdefs.h> 71 __KERNEL_RCSID(0, "$NetBSD: nsphyter.c,v 1.34 2009/04/02 00:09:33 dyoung Exp $"); 72 73 #include <sys/param.h> 74 #include <sys/systm.h> 75 #include <sys/kernel.h> 76 #include <sys/device.h> 77 #include <sys/socket.h> 78 #include <sys/errno.h> 79 80 #include <net/if.h> 81 #include <net/if_media.h> 82 83 #include <dev/mii/mii.h> 84 #include <dev/mii/miivar.h> 85 #include <dev/mii/miidevs.h> 86 87 #include <dev/mii/nsphyterreg.h> 88 89 static int nsphytermatch(device_t, cfdata_t, void *); 90 static void nsphyterattach(device_t, device_t, void *); 91 92 CFATTACH_DECL3_NEW(nsphyter, sizeof(struct mii_softc), 93 nsphytermatch, nsphyterattach, mii_phy_detach, mii_phy_activate, NULL, 94 NULL, DVF_DETACH_SHUTDOWN); 95 96 static int nsphyter_service(struct mii_softc *, struct mii_data *, int); 97 static void nsphyter_status(struct mii_softc *); 98 static void nsphyter_reset(struct mii_softc *); 99 100 static const struct mii_phy_funcs nsphyter_funcs = { 101 nsphyter_service, nsphyter_status, nsphyter_reset, 102 }; 103 104 static const struct mii_phydesc nsphyters[] = { 105 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83843, 106 MII_STR_xxNATSEMI_DP83843 }, 107 108 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83847, 109 MII_STR_xxNATSEMI_DP83847 }, 110 111 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83815, 112 MII_STR_xxNATSEMI_DP83815 }, 113 114 { 0, 0, 115 NULL }, 116 }; 117 118 static int 119 nsphytermatch(device_t parent, cfdata_t match, void *aux) 120 { 121 struct mii_attach_args *ma = aux; 122 123 if (mii_phy_match(ma, nsphyters) != NULL) 124 return (10); 125 126 return (0); 127 } 128 129 static void 130 nsphyterattach(device_t parent, device_t self, void *aux) 131 { 132 struct mii_softc *sc = device_private(self); 133 struct mii_attach_args *ma = aux; 134 struct mii_data *mii = ma->mii_data; 135 const struct mii_phydesc *mpd; 136 137 mpd = mii_phy_match(ma, nsphyters); 138 aprint_naive(": Media interface\n"); 139 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 140 141 sc->mii_dev = self; 142 sc->mii_inst = mii->mii_instance; 143 sc->mii_phy = ma->mii_phyno; 144 sc->mii_funcs = &nsphyter_funcs; 145 sc->mii_pdata = mii; 146 sc->mii_flags = ma->mii_flags; 147 sc->mii_anegticks = MII_ANEGTICKS; 148 149 PHY_RESET(sc); 150 151 sc->mii_capabilities = 152 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 153 aprint_normal_dev(self, ""); 154 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 155 aprint_error("no media present"); 156 else 157 mii_phy_add_media(sc); 158 aprint_normal("\n"); 159 } 160 161 static int 162 nsphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 163 { 164 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 165 int reg; 166 167 switch (cmd) { 168 case MII_POLLSTAT: 169 /* 170 * If we're not polling our PHY instance, just return. 171 */ 172 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 173 return (0); 174 break; 175 176 case MII_MEDIACHG: 177 /* 178 * If the media indicates a different PHY instance, 179 * isolate ourselves. 180 */ 181 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 182 reg = PHY_READ(sc, MII_BMCR); 183 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 184 return (0); 185 } 186 187 /* 188 * If the interface is not up, don't do anything. 189 */ 190 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 191 break; 192 193 mii_phy_setmedia(sc); 194 break; 195 196 case MII_TICK: 197 /* 198 * If we're not currently selected, just return. 199 */ 200 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 201 return (0); 202 203 if (mii_phy_tick(sc) == EJUSTRETURN) 204 return (0); 205 break; 206 207 case MII_DOWN: 208 mii_phy_down(sc); 209 return (0); 210 } 211 212 /* Update the media status. */ 213 mii_phy_status(sc); 214 215 /* Callback if something changed. */ 216 mii_phy_update(sc, cmd); 217 return (0); 218 } 219 220 static void 221 nsphyter_status(struct mii_softc *sc) 222 { 223 struct mii_data *mii = sc->mii_pdata; 224 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 225 int bmsr, bmcr, physts; 226 227 mii->mii_media_status = IFM_AVALID; 228 mii->mii_media_active = IFM_ETHER; 229 230 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 231 physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS); 232 233 if (physts & PHYSTS_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 /* 248 * The media status bits are only valid of autonegotiation 249 * has completed (or it's disabled). 250 */ 251 if ((bmsr & BMSR_ACOMP) == 0) { 252 /* Erg, still trying, I guess... */ 253 mii->mii_media_active |= IFM_NONE; 254 return; 255 } 256 257 if (physts & PHYSTS_SPEED10) 258 mii->mii_media_active |= IFM_10_T; 259 else 260 mii->mii_media_active |= IFM_100_TX; 261 if (physts & PHYSTS_DUPLEX) 262 mii->mii_media_active |= 263 IFM_FDX | mii_phy_flowstatus(sc); 264 } else 265 mii->mii_media_active = ife->ifm_media; 266 } 267 268 void 269 nsphyter_reset(struct mii_softc *sc) 270 { 271 int reg, i; 272 273 if (sc->mii_flags & MIIF_NOISOLATE) 274 reg = BMCR_RESET; 275 else 276 reg = BMCR_RESET | BMCR_ISO; 277 PHY_WRITE(sc, MII_BMCR, reg); 278 279 /* 280 * It is best to allow a little time for the reset to settle 281 * in before we start polling the BMCR again. Notably, the 282 * DP83840A manual states that there should be a 500us delay 283 * between asserting software reset and attempting MII serial 284 * operations. Also, a DP83815 can get into a bad state on 285 * cable removal and reinsertion if we do not delay here. 286 */ 287 delay(500); 288 289 /* Wait another 100ms for it to complete. */ 290 for (i = 0; i < 100; i++) { 291 reg = PHY_READ(sc, MII_BMCR); 292 if ((reg & BMCR_RESET) == 0) 293 break; 294 delay(1000); 295 } 296 297 if (sc->mii_inst != 0 && ((sc->mii_flags & MIIF_NOISOLATE) == 0)) 298 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 299 } 300
Indexes created Tue Sep 30 20:09:53 GMT 2025