ihphy.c revision 1.9
1 /* $NetBSD: ihphy.c,v 1.9 2016/07/07 06:55:41 msaitoh Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 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, and by Frank van der Linden. 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 Intel's 82577 (Hanksville) Ethernet 10/100/1000 PHY 59 * Data Sheet: http://download.intel.com/design/network/datashts/319439.pdf 60 */ 61 62 #include <sys/cdefs.h> 63 __KERNEL_RCSID(0, "$NetBSD: ihphy.c,v 1.9 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/ihphyreg.h> 80 81 static int ihphymatch(device_t, cfdata_t, void *); 82 static void ihphyattach(device_t, device_t, void *); 83 84 CFATTACH_DECL3_NEW(ihphy, sizeof(struct mii_softc), 85 ihphymatch, ihphyattach, mii_phy_detach, mii_phy_activate, NULL, NULL, 86 DVF_DETACH_SHUTDOWN); 87 88 static int ihphy_service(struct mii_softc *, struct mii_data *, int); 89 static void ihphy_status(struct mii_softc *); 90 static void ihphy_reset(struct mii_softc *); 91 92 static const struct mii_phy_funcs ihphy_funcs = { 93 ihphy_service, ihphy_status, ihphy_reset, 94 }; 95 96 static const struct mii_phydesc ihphys[] = { 97 { MII_OUI_INTEL, MII_MODEL_INTEL_I82577, 98 MII_STR_INTEL_I82577 }, 99 { MII_OUI_INTEL, MII_MODEL_INTEL_I82579, 100 MII_STR_INTEL_I82579 }, 101 { MII_OUI_INTEL, MII_MODEL_INTEL_I217, 102 MII_STR_INTEL_I217 }, 103 104 { 0, 0, 105 NULL }, 106 }; 107 108 static int 109 ihphymatch(device_t parent, cfdata_t match, void *aux) 110 { 111 struct mii_attach_args *ma = aux; 112 113 if (mii_phy_match(ma, ihphys) != NULL) 114 return 10; 115 116 return 0; 117 } 118 119 static void 120 ihphyattach(device_t parent, device_t self, void *aux) 121 { 122 struct mii_softc *sc = device_private(self); 123 struct mii_attach_args *ma = aux; 124 struct mii_data *mii = ma->mii_data; 125 const struct mii_phydesc *mpd; 126 int reg; 127 128 mpd = mii_phy_match(ma, ihphys); 129 aprint_naive(": Media interface\n"); 130 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 131 132 sc->mii_dev = self; 133 sc->mii_inst = mii->mii_instance; 134 sc->mii_phy = ma->mii_phyno; 135 sc->mii_funcs = &ihphy_funcs; 136 sc->mii_pdata = mii; 137 sc->mii_flags = ma->mii_flags; 138 sc->mii_anegticks = MII_ANEGTICKS; 139 140 PHY_RESET(sc); 141 142 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 143 if (sc->mii_capabilities & BMSR_EXTSTAT) 144 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 145 aprint_normal_dev(self, ""); 146 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 147 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 148 aprint_error("no media present"); 149 else 150 mii_phy_add_media(sc); 151 aprint_normal("\n"); 152 153 /* 154 * Link setup (as done by Intel's Linux driver for the 82577). 155 */ 156 reg = PHY_READ(sc, IHPHY_MII_CFG); 157 reg |= IHPHY_CFG_TX_CRS; 158 reg |= IHPHY_CFG_DOWN_SHIFT; 159 PHY_WRITE(sc, IHPHY_MII_CFG, reg); 160 } 161 162 static int 163 ihphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 164 { 165 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 166 int reg; 167 168 switch (cmd) { 169 case MII_POLLSTAT: 170 /* 171 * If we're not polling our PHY instance, just return. 172 */ 173 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 174 return 0; 175 break; 176 177 case MII_MEDIACHG: 178 /* 179 * If the media indicates a different PHY instance, 180 * isolate ourselves. 181 */ 182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 183 reg = PHY_READ(sc, MII_BMCR); 184 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 185 return 0; 186 } 187 188 /* 189 * If the interface is not up, don't do anything. 190 */ 191 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 192 break; 193 194 /* 195 * If media is deselected, disable link (standby). 196 */ 197 reg = PHY_READ(sc, IHPHY_MII_ECR); 198 if (IFM_SUBTYPE(ife->ifm_media) == IFM_NONE) 199 reg &= ~IHPHY_ECR_LNK_EN; 200 else 201 reg |= IHPHY_ECR_LNK_EN; 202 PHY_WRITE(sc, IHPHY_MII_ECR, reg); 203 204 /* 205 * XXX Adjust MDI/MDIX configuration? Other settings? 206 */ 207 208 mii_phy_setmedia(sc); 209 break; 210 211 case MII_TICK: 212 /* 213 * If we're not currently selected, just return. 214 */ 215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 216 return 0; 217 218 if (mii_phy_tick(sc) == EJUSTRETURN) 219 return 0; 220 break; 221 222 case MII_DOWN: 223 mii_phy_down(sc); 224 PHY_WRITE(sc, MII_BMCR, BMCR_PDOWN); 225 return 0; 226 } 227 228 /* Update the media status. */ 229 mii_phy_status(sc); 230 231 /* Callback if something changed. */ 232 mii_phy_update(sc, cmd); 233 return 0; 234 } 235 236 static void 237 ihphy_status(struct mii_softc *sc) 238 { 239 struct mii_data *mii = sc->mii_pdata; 240 int esr, bmcr, gtsr; 241 242 mii->mii_media_status = IFM_AVALID; 243 mii->mii_media_active = IFM_ETHER; 244 245 esr = PHY_READ(sc, IHPHY_MII_ESR); 246 247 if (esr & IHPHY_ESR_LINK) 248 mii->mii_media_status |= IFM_ACTIVE; 249 250 bmcr = PHY_READ(sc, MII_BMCR); 251 if (bmcr & (BMCR_ISO | BMCR_PDOWN)) { 252 mii->mii_media_active |= IFM_NONE; 253 mii->mii_media_status = 0; 254 return; 255 } 256 257 if (bmcr & BMCR_LOOP) 258 mii->mii_media_active |= IFM_LOOP; 259 260 if (bmcr & BMCR_AUTOEN) { 261 if ((esr & IHPHY_ESR_ANEG_STAT) == 0) { 262 /* Erg, still trying, I guess... */ 263 mii->mii_media_active |= IFM_NONE; 264 return; 265 } 266 } 267 268 switch (esr & IHPHY_ESR_SPEED) { 269 case IHPHY_SPEED_1000: 270 mii->mii_media_active |= IFM_1000_T; 271 gtsr = PHY_READ(sc, MII_100T2SR); 272 if (gtsr & GTSR_MS_RES) 273 mii->mii_media_active |= IFM_ETH_MASTER; 274 break; 275 276 case IHPHY_SPEED_100: 277 /* 100BASE-T2 and 100BASE-T4 are not supported. */ 278 mii->mii_media_active |= IFM_100_TX; 279 break; 280 281 case IHPHY_SPEED_10: 282 mii->mii_media_active |= IFM_10_T; 283 break; 284 285 default: 286 mii->mii_media_active |= IFM_NONE; 287 mii->mii_media_status = 0; 288 return; 289 } 290 291 if (esr & IHPHY_ESR_DUPLEX) 292 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc); 293 else 294 mii->mii_media_active |= IFM_HDX; 295 } 296 297 static void 298 ihphy_reset(struct mii_softc *sc) 299 { 300 int reg, i; 301 302 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_ISO); 303 304 /* 305 * Regarding reset, the data sheet specifies (page 55): 306 * 307 * "After PHY reset, a delay of 10 ms is required before 308 * any register access using MDIO." 309 */ 310 delay(10000); 311 312 /* Wait another 100ms for it to complete. */ 313 for (i = 0; i < 100; i++) { 314 reg = PHY_READ(sc, MII_BMCR); 315 if ((reg & BMCR_RESET) == 0) 316 break; 317 delay(1000); 318 } 319 320 if (sc->mii_inst != 0) 321 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 322 } 323
Indexes created Tue Sep 30 11:09:46 GMT 2025