sqphy.c revision 1.44.6.1
1 /* $NetBSD: sqphy.c,v 1.44.6.1 2008/06/02 13:23:35 mjf 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 Seeq 80220/80221, 80223, and 80225 10/100 ethernet PHYs 64 * datasheet from www.seeq.com 65 */ 66 67 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: sqphy.c,v 1.44.6.1 2008/06/02 13:23:35 mjf Exp $"); 69 70 #include <sys/param.h> 71 #include <sys/systm.h> 72 #include <sys/kernel.h> 73 #include <sys/device.h> 74 #include <sys/socket.h> 75 #include <sys/errno.h> 76 77 #include <net/if.h> 78 #include <net/if_media.h> 79 80 #include <dev/mii/mii.h> 81 #include <dev/mii/miivar.h> 82 #include <dev/mii/miidevs.h> 83 84 #include <dev/mii/sqphyreg.h> 85 86 static int sqphymatch(device_t, cfdata_t, void *); 87 static void sqphyattach(device_t, device_t, void *); 88 89 CFATTACH_DECL_NEW(sqphy, sizeof(struct mii_softc), 90 sqphymatch, sqphyattach, mii_phy_detach, mii_phy_activate); 91 92 static int sqphy_service(struct mii_softc *, struct mii_data *, int); 93 static void sqphy_status(struct mii_softc *); 94 static void sqphy_84220_reset(struct mii_softc *); 95 96 static const struct mii_phy_funcs sqphy_funcs = { 97 sqphy_service, sqphy_status, mii_phy_reset, 98 }; 99 100 static const struct mii_phy_funcs sqphy_84220_funcs = { 101 sqphy_service, sqphy_status, sqphy_84220_reset, 102 }; 103 104 static const struct mii_phydesc sqphys[] = { 105 { MII_OUI_SEEQ, MII_MODEL_SEEQ_80220, 106 MII_STR_SEEQ_80220 }, 107 108 { MII_OUI_SEEQ, MII_MODEL_SEEQ_80225, 109 MII_STR_SEEQ_80225 }, 110 111 { MII_OUI_SEEQ, MII_MODEL_SEEQ_84220, 112 MII_STR_SEEQ_84220 }, 113 114 { 0, 0, 115 NULL }, 116 }; 117 118 static int 119 sqphymatch(device_t parent, cfdata_t match, void *aux) 120 { 121 struct mii_attach_args *ma = aux; 122 123 if (mii_phy_match(ma, sqphys) != NULL) 124 return (10); 125 126 return (0); 127 } 128 129 static void 130 sqphyattach(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, sqphys); 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_pdata = mii; 145 sc->mii_flags = ma->mii_flags; 146 sc->mii_anegticks = MII_ANEGTICKS; 147 148 switch (MII_MODEL(ma->mii_id2)) { 149 case MII_MODEL_SEEQ_84220: 150 sc->mii_funcs = &sqphy_84220_funcs; 151 aprint_normal_dev(self, "using Seeq 84220 isolate/reset hack\n"); 152 break; 153 154 default: 155 sc->mii_funcs = &sqphy_funcs; 156 } 157 158 PHY_RESET(sc); 159 160 sc->mii_capabilities = 161 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 162 aprint_normal_dev(self, ""); 163 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 164 aprint_error("no media present"); 165 else 166 mii_phy_add_media(sc); 167 aprint_normal("\n"); 168 169 if (!pmf_device_register(self, NULL, mii_phy_resume)) 170 aprint_error_dev(self, "couldn't establish power handler\n"); 171 } 172 173 static int 174 sqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 175 { 176 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 177 int reg; 178 179 switch (cmd) { 180 case MII_POLLSTAT: 181 /* 182 * If we're not polling our PHY instance, just return. 183 */ 184 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 185 return (0); 186 break; 187 188 case MII_MEDIACHG: 189 /* 190 * If the media indicates a different PHY instance, 191 * isolate ourselves. 192 */ 193 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 194 reg = PHY_READ(sc, MII_BMCR); 195 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 196 return (0); 197 } 198 199 /* 200 * If the interface is not up, don't do anything. 201 */ 202 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 203 break; 204 205 mii_phy_setmedia(sc); 206 break; 207 208 case MII_TICK: 209 /* 210 * If we're not currently selected, just return. 211 */ 212 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 213 return (0); 214 215 if (mii_phy_tick(sc) == EJUSTRETURN) 216 return (0); 217 break; 218 219 case MII_DOWN: 220 mii_phy_down(sc); 221 return (0); 222 } 223 224 /* Update the media status. */ 225 mii_phy_status(sc); 226 227 /* Callback if something changed. */ 228 mii_phy_update(sc, cmd); 229 return (0); 230 } 231 232 static void 233 sqphy_status(struct mii_softc *sc) 234 { 235 struct mii_data *mii = sc->mii_pdata; 236 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 237 int bmsr, bmcr, status; 238 239 mii->mii_media_status = IFM_AVALID; 240 mii->mii_media_active = IFM_ETHER; 241 242 bmsr = PHY_READ(sc, MII_BMSR) | 243 PHY_READ(sc, MII_BMSR); 244 if (bmsr & BMSR_LINK) 245 mii->mii_media_status |= IFM_ACTIVE; 246 247 bmcr = PHY_READ(sc, MII_BMCR); 248 if (bmcr & BMCR_ISO) { 249 mii->mii_media_active |= IFM_NONE; 250 mii->mii_media_status = 0; 251 return; 252 } 253 254 if (bmcr & BMCR_LOOP) 255 mii->mii_media_active |= IFM_LOOP; 256 257 if (bmcr & BMCR_AUTOEN) { 258 if ((bmsr & BMSR_ACOMP) == 0) { 259 /* Erg, still trying, I guess... */ 260 mii->mii_media_active |= IFM_NONE; 261 return; 262 } 263 /* 264 * Note: don't get fancy here -- the 80225 only 265 * supports the SPD_DET and DPLX_DET bits in 266 * the STATUS register. 267 */ 268 status = PHY_READ(sc, MII_SQPHY_STATUS); 269 if (status & STATUS_SPD_DET) 270 mii->mii_media_active |= IFM_100_TX; 271 else 272 mii->mii_media_active |= IFM_10_T; 273 if (status & STATUS_DPLX_DET) 274 mii->mii_media_active |= IFM_FDX; 275 } else 276 mii->mii_media_active = ife->ifm_media; 277 } 278 279 static void 280 sqphy_84220_reset(struct mii_softc *sc) 281 { 282 int reg; 283 284 mii_phy_reset(sc); 285 286 /* 287 * This PHY sometimes insists on coming out of reset isolated, 288 * even when the MDA[0-3] pins are pulled high (to indicate 289 * PHY address 0), contrary to the device's datasheet. 290 * 291 * Morever, simply clearing BMCR_ISO here isn't enough; the 292 * change won't stick until about 30mS *after* the PHY has 293 * been reset. 294 * 295 * This sucks. 296 */ 297 while ((sc->mii_inst == 0 || (sc->mii_flags & MIIF_NOISOLATE)) && 298 ((reg = PHY_READ(sc, MII_BMCR)) & BMCR_ISO) != 0) { 299 300 delay(35000); 301 PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO); 302 delay(35000); 303 } 304 } 305
Indexes created Wed Oct 15 16:09:53 GMT 2025