sqphy.c revision 1.51
1 /* $NetBSD: sqphy.c,v 1.51 2016/07/07 06:55:41 msaitoh 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 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 /* 58 * driver for Seeq 80220/80221, 80223, and 80225 10/100 ethernet PHYs 59 * datasheet from www.seeq.com 60 */ 61 62 #include <sys/cdefs.h> 63 __KERNEL_RCSID(0, "$NetBSD: sqphy.c,v 1.51 2016/07/07 06:55:41 msaitoh Exp $"); 64 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/kernel.h> 68 #include <sys/device.h> 69 #include <sys/socket.h> 70 #include <sys/errno.h> 71 72 #include <net/if.h> 73 #include <net/if_media.h> 74 75 #include <dev/mii/mii.h> 76 #include <dev/mii/miivar.h> 77 #include <dev/mii/miidevs.h> 78 79 #include <dev/mii/sqphyreg.h> 80 81 static int sqphymatch(device_t, cfdata_t, void *); 82 static void sqphyattach(device_t, device_t, void *); 83 84 CFATTACH_DECL_NEW(sqphy, sizeof(struct mii_softc), 85 sqphymatch, sqphyattach, mii_phy_detach, mii_phy_activate); 86 87 static int sqphy_service(struct mii_softc *, struct mii_data *, int); 88 static void sqphy_status(struct mii_softc *); 89 static void sqphy_84220_reset(struct mii_softc *); 90 91 static const struct mii_phy_funcs sqphy_funcs = { 92 sqphy_service, sqphy_status, mii_phy_reset, 93 }; 94 95 static const struct mii_phy_funcs sqphy_84220_funcs = { 96 sqphy_service, sqphy_status, sqphy_84220_reset, 97 }; 98 99 static const struct mii_phydesc sqphys[] = { 100 { MII_OUI_SEEQ, MII_MODEL_SEEQ_80220, 101 MII_STR_SEEQ_80220 }, 102 103 { MII_OUI_SEEQ, MII_MODEL_SEEQ_80225, 104 MII_STR_SEEQ_80225 }, 105 106 { MII_OUI_SEEQ, MII_MODEL_SEEQ_84220, 107 MII_STR_SEEQ_84220 }, 108 109 { 0, 0, 110 NULL }, 111 }; 112 113 static int 114 sqphymatch(device_t parent, cfdata_t match, void *aux) 115 { 116 struct mii_attach_args *ma = aux; 117 118 if (mii_phy_match(ma, sqphys) != NULL) 119 return (10); 120 121 return (0); 122 } 123 124 static void 125 sqphyattach(device_t parent, device_t self, void *aux) 126 { 127 struct mii_softc *sc = device_private(self); 128 struct mii_attach_args *ma = aux; 129 struct mii_data *mii = ma->mii_data; 130 const struct mii_phydesc *mpd; 131 132 mpd = mii_phy_match(ma, sqphys); 133 aprint_naive(": Media interface\n"); 134 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 135 136 sc->mii_dev = self; 137 sc->mii_inst = mii->mii_instance; 138 sc->mii_phy = ma->mii_phyno; 139 sc->mii_pdata = mii; 140 sc->mii_flags = ma->mii_flags; 141 sc->mii_anegticks = MII_ANEGTICKS; 142 143 switch (MII_MODEL(ma->mii_id2)) { 144 case MII_MODEL_SEEQ_84220: 145 sc->mii_funcs = &sqphy_84220_funcs; 146 aprint_normal_dev(self, 147 "using Seeq 84220 isolate/reset hack\n"); 148 break; 149 150 default: 151 sc->mii_funcs = &sqphy_funcs; 152 } 153 154 PHY_RESET(sc); 155 156 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 157 aprint_normal_dev(self, ""); 158 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 159 aprint_error("no media present"); 160 else 161 mii_phy_add_media(sc); 162 aprint_normal("\n"); 163 } 164 165 static int 166 sqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 167 { 168 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 169 int reg; 170 171 switch (cmd) { 172 case MII_POLLSTAT: 173 /* 174 * If we're not polling our PHY instance, just return. 175 */ 176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 177 return (0); 178 break; 179 180 case MII_MEDIACHG: 181 /* 182 * If the media indicates a different PHY instance, 183 * isolate ourselves. 184 */ 185 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 186 reg = PHY_READ(sc, MII_BMCR); 187 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 188 return (0); 189 } 190 191 /* 192 * If the interface is not up, don't do anything. 193 */ 194 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 195 break; 196 197 mii_phy_setmedia(sc); 198 break; 199 200 case MII_TICK: 201 /* 202 * If we're not currently selected, just return. 203 */ 204 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 205 return (0); 206 207 if (mii_phy_tick(sc) == EJUSTRETURN) 208 return (0); 209 break; 210 211 case MII_DOWN: 212 mii_phy_down(sc); 213 return (0); 214 } 215 216 /* Update the media status. */ 217 mii_phy_status(sc); 218 219 /* Callback if something changed. */ 220 mii_phy_update(sc, cmd); 221 return (0); 222 } 223 224 static void 225 sqphy_status(struct mii_softc *sc) 226 { 227 struct mii_data *mii = sc->mii_pdata; 228 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 229 int bmsr, bmcr, status; 230 231 mii->mii_media_status = IFM_AVALID; 232 mii->mii_media_active = IFM_ETHER; 233 234 bmsr = PHY_READ(sc, MII_BMSR) | 235 PHY_READ(sc, MII_BMSR); 236 if (bmsr & BMSR_LINK) 237 mii->mii_media_status |= IFM_ACTIVE; 238 239 bmcr = PHY_READ(sc, MII_BMCR); 240 if (bmcr & BMCR_ISO) { 241 mii->mii_media_active |= IFM_NONE; 242 mii->mii_media_status = 0; 243 return; 244 } 245 246 if (bmcr & BMCR_LOOP) 247 mii->mii_media_active |= IFM_LOOP; 248 249 if (bmcr & BMCR_AUTOEN) { 250 if ((bmsr & BMSR_ACOMP) == 0) { 251 /* Erg, still trying, I guess... */ 252 mii->mii_media_active |= IFM_NONE; 253 return; 254 } 255 /* 256 * Note: don't get fancy here -- the 80225 only 257 * supports the SPD_DET and DPLX_DET bits in 258 * the STATUS register. 259 */ 260 status = PHY_READ(sc, MII_SQPHY_STATUS); 261 if (status & STATUS_SPD_DET) 262 mii->mii_media_active |= IFM_100_TX; 263 else 264 mii->mii_media_active |= IFM_10_T; 265 if (status & STATUS_DPLX_DET) 266 mii->mii_media_active |= IFM_FDX; 267 else 268 mii->mii_media_active |= IFM_HDX; 269 } else 270 mii->mii_media_active = ife->ifm_media; 271 } 272 273 static void 274 sqphy_84220_reset(struct mii_softc *sc) 275 { 276 int reg; 277 278 mii_phy_reset(sc); 279 280 /* 281 * This PHY sometimes insists on coming out of reset isolated, 282 * even when the MDA[0-3] pins are pulled high (to indicate 283 * PHY address 0), contrary to the device's datasheet. 284 * 285 * Morever, simply clearing BMCR_ISO here isn't enough; the 286 * change won't stick until about 30mS *after* the PHY has 287 * been reset. 288 * 289 * This sucks. 290 */ 291 while ((sc->mii_inst == 0 || (sc->mii_flags & MIIF_NOISOLATE)) && 292 ((reg = PHY_READ(sc, MII_BMCR)) & BMCR_ISO) != 0) { 293 294 delay(35000); 295 PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO); 296 delay(35000); 297 } 298 } 299
Indexes created Wed Sep 24 02:09:48 GMT 2025