nsphyter.c revision 1.31
1 /* $NetBSD: nsphyter.c,v 1.31 2008/05/04 17:06:10 xtraeme 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 1.31 2008/05/04 17:06:10 xtraeme 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_DECL_NEW(nsphyter, sizeof(struct mii_softc), 93 nsphytermatch, nsphyterattach, mii_phy_detach, mii_phy_activate); 94 95 static int nsphyter_service(struct mii_softc *, struct mii_data *, int); 96 static void nsphyter_status(struct mii_softc *); 97 static void nsphyter_reset(struct mii_softc *); 98 99 static const struct mii_phy_funcs nsphyter_funcs = { 100 nsphyter_service, nsphyter_status, nsphyter_reset, 101 }; 102 103 static const struct mii_phydesc nsphyters[] = { 104 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83843, 105 MII_STR_xxNATSEMI_DP83843 }, 106 107 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83847, 108 MII_STR_xxNATSEMI_DP83847 }, 109 110 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83815, 111 MII_STR_xxNATSEMI_DP83815 }, 112 113 { 0, 0, 114 NULL }, 115 }; 116 117 static int 118 nsphytermatch(device_t parent, cfdata_t match, void *aux) 119 { 120 struct mii_attach_args *ma = aux; 121 122 if (mii_phy_match(ma, nsphyters) != NULL) 123 return (10); 124 125 return (0); 126 } 127 128 static void 129 nsphyterattach(device_t parent, device_t self, void *aux) 130 { 131 struct mii_softc *sc = (struct mii_softc *)self; 132 struct mii_attach_args *ma = aux; 133 struct mii_data *mii = ma->mii_data; 134 const struct mii_phydesc *mpd; 135 136 mpd = mii_phy_match(ma, nsphyters); 137 aprint_naive(": Media interface\n"); 138 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 139 140 sc->mii_dev = self; 141 sc->mii_inst = mii->mii_instance; 142 sc->mii_phy = ma->mii_phyno; 143 sc->mii_funcs = &nsphyter_funcs; 144 sc->mii_pdata = mii; 145 sc->mii_flags = ma->mii_flags; 146 sc->mii_anegticks = MII_ANEGTICKS; 147 148 PHY_RESET(sc); 149 150 sc->mii_capabilities = 151 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 152 aprint_normal_dev(self, ""); 153 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 154 aprint_error("no media present"); 155 else 156 mii_phy_add_media(sc); 157 aprint_normal("\n"); 158 159 if (!pmf_device_register(self, NULL, mii_phy_resume)) 160 aprint_error_dev(self, "couldn't establish power handler\n"); 161 } 162 163 static int 164 nsphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 165 { 166 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 167 int reg; 168 169 switch (cmd) { 170 case MII_POLLSTAT: 171 /* 172 * If we're not polling our PHY instance, just return. 173 */ 174 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 175 return (0); 176 break; 177 178 case MII_MEDIACHG: 179 /* 180 * If the media indicates a different PHY instance, 181 * isolate ourselves. 182 */ 183 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 184 reg = PHY_READ(sc, MII_BMCR); 185 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 186 return (0); 187 } 188 189 /* 190 * If the interface is not up, don't do anything. 191 */ 192 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 193 break; 194 195 mii_phy_setmedia(sc); 196 break; 197 198 case MII_TICK: 199 /* 200 * If we're not currently selected, just return. 201 */ 202 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 203 return (0); 204 205 if (mii_phy_tick(sc) == EJUSTRETURN) 206 return (0); 207 break; 208 209 case MII_DOWN: 210 mii_phy_down(sc); 211 return (0); 212 } 213 214 /* Update the media status. */ 215 mii_phy_status(sc); 216 217 /* Callback if something changed. */ 218 mii_phy_update(sc, cmd); 219 return (0); 220 } 221 222 static void 223 nsphyter_status(struct mii_softc *sc) 224 { 225 struct mii_data *mii = sc->mii_pdata; 226 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 227 int bmsr, bmcr, physts; 228 229 mii->mii_media_status = IFM_AVALID; 230 mii->mii_media_active = IFM_ETHER; 231 232 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 233 physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS); 234 235 if (physts & PHYSTS_LINK) 236 mii->mii_media_status |= IFM_ACTIVE; 237 238 bmcr = PHY_READ(sc, MII_BMCR); 239 if (bmcr & BMCR_ISO) { 240 mii->mii_media_active |= IFM_NONE; 241 mii->mii_media_status = 0; 242 return; 243 } 244 245 if (bmcr & BMCR_LOOP) 246 mii->mii_media_active |= IFM_LOOP; 247 248 if (bmcr & BMCR_AUTOEN) { 249 /* 250 * The media status bits are only valid of autonegotiation 251 * has completed (or it's disabled). 252 */ 253 if ((bmsr & BMSR_ACOMP) == 0) { 254 /* Erg, still trying, I guess... */ 255 mii->mii_media_active |= IFM_NONE; 256 return; 257 } 258 259 if (physts & PHYSTS_SPEED10) 260 mii->mii_media_active |= IFM_10_T; 261 else 262 mii->mii_media_active |= IFM_100_TX; 263 if (physts & PHYSTS_DUPLEX) 264 mii->mii_media_active |= 265 IFM_FDX | mii_phy_flowstatus(sc); 266 } else 267 mii->mii_media_active = ife->ifm_media; 268 } 269 270 void 271 nsphyter_reset(struct mii_softc *sc) 272 { 273 int reg, i; 274 275 if (sc->mii_flags & MIIF_NOISOLATE) 276 reg = BMCR_RESET; 277 else 278 reg = BMCR_RESET | BMCR_ISO; 279 PHY_WRITE(sc, MII_BMCR, reg); 280 281 /* 282 * It is best to allow a little time for the reset to settle 283 * in before we start polling the BMCR again. Notably, the 284 * DP83840A manual states that there should be a 500us delay 285 * between asserting software reset and attempting MII serial 286 * operations. Also, a DP83815 can get into a bad state on 287 * cable removal and reinsertion if we do not delay here. 288 */ 289 delay(500); 290 291 /* Wait another 100ms for it to complete. */ 292 for (i = 0; i < 100; i++) { 293 reg = PHY_READ(sc, MII_BMCR); 294 if ((reg & BMCR_RESET) == 0) 295 break; 296 delay(1000); 297 } 298 299 if (sc->mii_inst != 0 && ((sc->mii_flags & MIIF_NOISOLATE) == 0)) 300 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 301 } 302
Indexes created Tue Sep 30 20:09:53 GMT 2025