sqphy.c revision 1.41
1 /* $NetBSD: sqphy.c,v 1.41 2006/11/16 01:33:06 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 Seeq 80220/80221, 80223, and 80225 10/100 ethernet PHYs 71 * datasheet from www.seeq.com 72 */ 73 74 #include <sys/cdefs.h> 75 __KERNEL_RCSID(0, "$NetBSD: sqphy.c,v 1.41 2006/11/16 01:33:06 christos Exp $"); 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/device.h> 81 #include <sys/socket.h> 82 #include <sys/errno.h> 83 84 #include <net/if.h> 85 #include <net/if_media.h> 86 87 #include <dev/mii/mii.h> 88 #include <dev/mii/miivar.h> 89 #include <dev/mii/miidevs.h> 90 91 #include <dev/mii/sqphyreg.h> 92 93 static int sqphymatch(struct device *, struct cfdata *, void *); 94 static void sqphyattach(struct device *, struct device *, void *); 95 96 CFATTACH_DECL(sqphy, sizeof(struct mii_softc), 97 sqphymatch, sqphyattach, mii_phy_detach, mii_phy_activate); 98 99 static int sqphy_service(struct mii_softc *, struct mii_data *, int); 100 static void sqphy_status(struct mii_softc *); 101 static void sqphy_84220_reset(struct mii_softc *); 102 103 static const struct mii_phy_funcs sqphy_funcs = { 104 sqphy_service, sqphy_status, mii_phy_reset, 105 }; 106 107 static const struct mii_phy_funcs sqphy_84220_funcs = { 108 sqphy_service, sqphy_status, sqphy_84220_reset, 109 }; 110 111 static const struct mii_phydesc sqphys[] = { 112 { MII_OUI_SEEQ, MII_MODEL_SEEQ_80220, 113 MII_STR_SEEQ_80220 }, 114 115 { MII_OUI_SEEQ, MII_MODEL_SEEQ_80225, 116 MII_STR_SEEQ_80225 }, 117 118 { MII_OUI_SEEQ, MII_MODEL_SEEQ_84220, 119 MII_STR_SEEQ_84220 }, 120 121 { 0, 0, 122 NULL }, 123 }; 124 125 static int 126 sqphymatch(struct device *parent, struct cfdata *match, 127 void *aux) 128 { 129 struct mii_attach_args *ma = aux; 130 131 if (mii_phy_match(ma, sqphys) != NULL) 132 return (10); 133 134 return (0); 135 } 136 137 static void 138 sqphyattach(struct device *parent, struct device *self, void *aux) 139 { 140 struct mii_softc *sc = device_private(self); 141 struct mii_attach_args *ma = aux; 142 struct mii_data *mii = ma->mii_data; 143 const struct mii_phydesc *mpd; 144 145 mpd = mii_phy_match(ma, sqphys); 146 aprint_naive(": Media interface\n"); 147 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 148 149 sc->mii_inst = mii->mii_instance; 150 sc->mii_phy = ma->mii_phyno; 151 sc->mii_pdata = mii; 152 sc->mii_flags = ma->mii_flags; 153 sc->mii_anegticks = 5; 154 155 switch (MII_MODEL(ma->mii_id2)) { 156 case MII_MODEL_SEEQ_84220: 157 sc->mii_funcs = &sqphy_84220_funcs; 158 aprint_normal("%s: using Seeq 84220 isolate/reset hack\n", 159 sc->mii_dev.dv_xname); 160 break; 161 162 default: 163 sc->mii_funcs = &sqphy_funcs; 164 } 165 166 PHY_RESET(sc); 167 168 sc->mii_capabilities = 169 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 170 aprint_normal("%s: ", sc->mii_dev.dv_xname); 171 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 172 aprint_error("no media present"); 173 else 174 mii_phy_add_media(sc); 175 aprint_normal("\n"); 176 } 177 178 static int 179 sqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 180 { 181 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 182 int reg; 183 184 if (!device_is_active(&sc->mii_dev)) 185 return (ENXIO); 186 187 switch (cmd) { 188 case MII_POLLSTAT: 189 /* 190 * If we're not polling our PHY instance, just return. 191 */ 192 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 193 return (0); 194 break; 195 196 case MII_MEDIACHG: 197 /* 198 * If the media indicates a different PHY instance, 199 * isolate ourselves. 200 */ 201 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 202 reg = PHY_READ(sc, MII_BMCR); 203 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 204 return (0); 205 } 206 207 /* 208 * If the interface is not up, don't do anything. 209 */ 210 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 211 break; 212 213 mii_phy_setmedia(sc); 214 break; 215 216 case MII_TICK: 217 /* 218 * If we're not currently selected, just return. 219 */ 220 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 221 return (0); 222 223 if (mii_phy_tick(sc) == EJUSTRETURN) 224 return (0); 225 break; 226 227 case MII_DOWN: 228 mii_phy_down(sc); 229 return (0); 230 } 231 232 /* Update the media status. */ 233 mii_phy_status(sc); 234 235 /* Callback if something changed. */ 236 mii_phy_update(sc, cmd); 237 return (0); 238 } 239 240 static void 241 sqphy_status(struct mii_softc *sc) 242 { 243 struct mii_data *mii = sc->mii_pdata; 244 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 245 int bmsr, bmcr, status; 246 247 mii->mii_media_status = IFM_AVALID; 248 mii->mii_media_active = IFM_ETHER; 249 250 bmsr = PHY_READ(sc, MII_BMSR) | 251 PHY_READ(sc, MII_BMSR); 252 if (bmsr & BMSR_LINK) 253 mii->mii_media_status |= IFM_ACTIVE; 254 255 bmcr = PHY_READ(sc, MII_BMCR); 256 if (bmcr & BMCR_ISO) { 257 mii->mii_media_active |= IFM_NONE; 258 mii->mii_media_status = 0; 259 return; 260 } 261 262 if (bmcr & BMCR_LOOP) 263 mii->mii_media_active |= IFM_LOOP; 264 265 if (bmcr & BMCR_AUTOEN) { 266 if ((bmsr & BMSR_ACOMP) == 0) { 267 /* Erg, still trying, I guess... */ 268 mii->mii_media_active |= IFM_NONE; 269 return; 270 } 271 /* 272 * Note: don't get fancy here -- the 80225 only 273 * supports the SPD_DET and DPLX_DET bits in 274 * the STATUS register. 275 */ 276 status = PHY_READ(sc, MII_SQPHY_STATUS); 277 if (status & STATUS_SPD_DET) 278 mii->mii_media_active |= IFM_100_TX; 279 else 280 mii->mii_media_active |= IFM_10_T; 281 if (status & STATUS_DPLX_DET) 282 mii->mii_media_active |= IFM_FDX; 283 } else 284 mii->mii_media_active = ife->ifm_media; 285 } 286 287 static void 288 sqphy_84220_reset(struct mii_softc *sc) 289 { 290 int reg; 291 292 mii_phy_reset(sc); 293 294 /* 295 * This PHY sometimes insists on coming out of reset isolated, 296 * even when the MDA[0-3] pins are pulled high (to indicate 297 * PHY address 0), contrary to the device's datasheet. 298 * 299 * Morever, simply clearing BMCR_ISO here isn't enough; the 300 * change won't stick until about 30mS *after* the PHY has 301 * been reset. 302 * 303 * This sucks. 304 */ 305 while ((sc->mii_inst == 0 || (sc->mii_flags & MIIF_NOISOLATE)) && 306 ((reg = PHY_READ(sc, MII_BMCR)) & BMCR_ISO) != 0) { 307 308 delay(35000); 309 PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO); 310 delay(35000); 311 } 312 } 313
Indexes created Fri Sep 26 08:10:20 GMT 2025