sqphy.c revision 1.30
1 /* $NetBSD: sqphy.c,v 1.30 2002/09/28 10:27:21 scw 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 1.30 2002/09/28 10:27:21 scw 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 int sqphymatch(struct device *, struct cfdata *, void *); 94 void sqphyattach(struct device *, struct device *, void *); 95 96 const struct cfattach sqphy_ca = { 97 sizeof(struct mii_softc), sqphymatch, sqphyattach, mii_phy_detach, 98 mii_phy_activate 99 }; 100 101 int sqphy_service(struct mii_softc *, struct mii_data *, int); 102 void sqphy_status(struct mii_softc *); 103 void sqphy_84220_reset(struct mii_softc *); 104 105 const struct mii_phy_funcs sqphy_funcs = { 106 sqphy_service, sqphy_status, mii_phy_reset, 107 }; 108 109 const struct mii_phy_funcs sqphy_84220_funcs = { 110 sqphy_service, sqphy_status, sqphy_84220_reset, 111 }; 112 113 const struct mii_phydesc sqphys[] = { 114 { MII_OUI_SEEQ, MII_MODEL_SEEQ_80220, 115 MII_STR_SEEQ_80220 }, 116 117 { MII_OUI_SEEQ, MII_MODEL_SEEQ_80225, 118 MII_STR_SEEQ_80225 }, 119 120 { MII_OUI_SEEQ, MII_MODEL_SEEQ_84220, 121 MII_STR_SEEQ_84220 }, 122 123 { 0, 0, 124 NULL }, 125 }; 126 127 int 128 sqphymatch(struct device *parent, struct cfdata *match, void *aux) 129 { 130 struct mii_attach_args *ma = aux; 131 132 if (mii_phy_match(ma, sqphys) != NULL) 133 return (10); 134 135 return (0); 136 } 137 138 void 139 sqphyattach(struct device *parent, struct device *self, void *aux) 140 { 141 struct mii_softc *sc = (struct mii_softc *)self; 142 struct mii_attach_args *ma = aux; 143 struct mii_data *mii = ma->mii_data; 144 const struct mii_phydesc *mpd; 145 146 mpd = mii_phy_match(ma, sqphys); 147 printf(": %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 printf("%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 printf("%s: ", sc->mii_dev.dv_xname); 171 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 172 printf("no media present"); 173 else 174 mii_phy_add_media(sc); 175 printf("\n"); 176 } 177 178 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 ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 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 printf("sqphy: isolating\n"); 203 reg = PHY_READ(sc, MII_BMCR); 204 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 205 return (0); 206 } 207 208 /* 209 * If the interface is not up, don't do anything. 210 */ 211 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 212 break; 213 214 mii_phy_setmedia(sc); 215 break; 216 217 case MII_TICK: 218 /* 219 * If we're not currently selected, just return. 220 */ 221 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 222 return (0); 223 224 if (mii_phy_tick(sc) == EJUSTRETURN) 225 return (0); 226 break; 227 228 case MII_DOWN: 229 mii_phy_down(sc); 230 return (0); 231 } 232 233 /* Update the media status. */ 234 mii_phy_status(sc); 235 236 /* Callback if something changed. */ 237 mii_phy_update(sc, cmd); 238 return (0); 239 } 240 241 void 242 sqphy_status(struct mii_softc *sc) 243 { 244 struct mii_data *mii = sc->mii_pdata; 245 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 246 int bmsr, bmcr, status; 247 248 mii->mii_media_status = IFM_AVALID; 249 mii->mii_media_active = IFM_ETHER; 250 251 bmsr = PHY_READ(sc, MII_BMSR) | 252 PHY_READ(sc, MII_BMSR); 253 if (bmsr & BMSR_LINK) 254 mii->mii_media_status |= IFM_ACTIVE; 255 256 bmcr = PHY_READ(sc, MII_BMCR); 257 if (bmcr & BMCR_ISO) { 258 mii->mii_media_active |= IFM_NONE; 259 mii->mii_media_status = 0; 260 return; 261 } 262 263 if (bmcr & BMCR_LOOP) 264 mii->mii_media_active |= IFM_LOOP; 265 266 if (bmcr & BMCR_AUTOEN) { 267 if ((bmsr & BMSR_ACOMP) == 0) { 268 /* Erg, still trying, I guess... */ 269 mii->mii_media_active |= IFM_NONE; 270 return; 271 } 272 /* 273 * Note: don't get fancy here -- the 80225 only 274 * supports the SPD_DET and DPLX_DET bits in 275 * the STATUS register. 276 */ 277 status = PHY_READ(sc, MII_SQPHY_STATUS); 278 if (status & STATUS_SPD_DET) 279 mii->mii_media_active |= IFM_100_TX; 280 else 281 mii->mii_media_active |= IFM_10_T; 282 if (status & STATUS_DPLX_DET) 283 mii->mii_media_active |= IFM_FDX; 284 } else 285 mii->mii_media_active = ife->ifm_media; 286 } 287 288 void 289 sqphy_84220_reset(struct mii_softc *sc) 290 { 291 int reg; 292 293 mii_phy_reset(sc); 294 295 /* 296 * This PHY sometimes insists on coming out of reset isolated, 297 * even when the MDA[0-3] pins are pulled high (to indicate 298 * PHY address 0), contrary to the device's datasheet. 299 * 300 * Morever, simply clearing BMCR_ISO here isn't enough; the 301 * change won't stick until about 30mS *after* the PHY has 302 * been reset. 303 * 304 * This sucks. 305 */ 306 while ((sc->mii_inst == 0 || (sc->mii_flags & MIIF_NOISOLATE)) && 307 ((reg = PHY_READ(sc, MII_BMCR)) & BMCR_ISO) != 0) { 308 309 delay(35000); 310 PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO); 311 delay(35000); 312 } 313 } 314
Indexes created Thu Sep 25 08:09:54 GMT 2025