ihphy.c revision 1.12
1 /* $NetBSD: ihphy.c,v 1.12 2019/02/19 07:49:58 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 1.12 2019/02/19 07:49:58 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 { MII_OUI_INTEL, MII_MODEL_INTEL_I82580, 104 MII_STR_INTEL_I82580}, 105 { MII_OUI_INTEL, MII_MODEL_INTEL_I350, 106 MII_STR_INTEL_I350}, 107 108 { 0, 0, 109 NULL }, 110 }; 111 112 static int 113 ihphymatch(device_t parent, cfdata_t match, void *aux) 114 { 115 struct mii_attach_args *ma = aux; 116 117 if (mii_phy_match(ma, ihphys) != NULL) 118 return 10; 119 120 return 0; 121 } 122 123 static void 124 ihphyattach(device_t parent, device_t self, void *aux) 125 { 126 struct mii_softc *sc = device_private(self); 127 struct mii_attach_args *ma = aux; 128 struct mii_data *mii = ma->mii_data; 129 const struct mii_phydesc *mpd; 130 uint16_t reg; 131 132 mpd = mii_phy_match(ma, ihphys); 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_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 140 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 141 sc->mii_mpd_rev = MII_REV(ma->mii_id2); 142 sc->mii_funcs = &ihphy_funcs; 143 sc->mii_pdata = mii; 144 sc->mii_flags = ma->mii_flags; 145 sc->mii_anegticks = MII_ANEGTICKS; 146 147 PHY_RESET(sc); 148 149 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 150 sc->mii_capabilities &= ma->mii_capmask; 151 if (sc->mii_capabilities & BMSR_EXTSTAT) 152 PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities); 153 aprint_normal_dev(self, ""); 154 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 155 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 156 aprint_error("no media present"); 157 else 158 mii_phy_add_media(sc); 159 aprint_normal("\n"); 160 161 /* 162 * Link setup (as done by Intel's Linux driver for the 82577). 163 */ 164 PHY_READ(sc, IHPHY_MII_CFG, ®); 165 reg |= IHPHY_CFG_TX_CRS; 166 reg |= IHPHY_CFG_DOWN_SHIFT; 167 PHY_WRITE(sc, IHPHY_MII_CFG, reg); 168 } 169 170 static int 171 ihphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 172 { 173 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 174 uint16_t reg; 175 176 switch (cmd) { 177 case MII_POLLSTAT: 178 /* 179 * If we're not polling our PHY instance, just return. 180 */ 181 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 182 return 0; 183 break; 184 185 case MII_MEDIACHG: 186 /* 187 * If the media indicates a different PHY instance, 188 * isolate ourselves. 189 */ 190 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 191 PHY_READ(sc, MII_BMCR, ®); 192 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 193 return 0; 194 } 195 196 /* 197 * If the interface is not up, don't do anything. 198 */ 199 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 200 break; 201 202 /* 203 * If media is deselected, disable link (standby). 204 */ 205 PHY_READ(sc, IHPHY_MII_ECR, ®); 206 if (IFM_SUBTYPE(ife->ifm_media) == IFM_NONE) 207 reg &= ~IHPHY_ECR_LNK_EN; 208 else 209 reg |= IHPHY_ECR_LNK_EN; 210 PHY_WRITE(sc, IHPHY_MII_ECR, reg); 211 212 /* 213 * XXX Adjust MDI/MDIX configuration? Other settings? 214 */ 215 216 mii_phy_setmedia(sc); 217 break; 218 219 case MII_TICK: 220 /* 221 * If we're not currently selected, just return. 222 */ 223 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 224 return 0; 225 226 if (mii_phy_tick(sc) == EJUSTRETURN) 227 return 0; 228 break; 229 230 case MII_DOWN: 231 mii_phy_down(sc); 232 PHY_WRITE(sc, MII_BMCR, BMCR_PDOWN); 233 return 0; 234 } 235 236 /* Update the media status. */ 237 mii_phy_status(sc); 238 239 /* Callback if something changed. */ 240 mii_phy_update(sc, cmd); 241 return 0; 242 } 243 244 static void 245 ihphy_status(struct mii_softc *sc) 246 { 247 struct mii_data *mii = sc->mii_pdata; 248 uint16_t esr, bmcr, gtsr; 249 250 mii->mii_media_status = IFM_AVALID; 251 mii->mii_media_active = IFM_ETHER; 252 253 PHY_READ(sc, IHPHY_MII_ESR, &esr); 254 255 if (esr & IHPHY_ESR_LINK) 256 mii->mii_media_status |= IFM_ACTIVE; 257 258 PHY_READ(sc, MII_BMCR, &bmcr); 259 if (bmcr & (BMCR_ISO | BMCR_PDOWN)) { 260 mii->mii_media_active |= IFM_NONE; 261 mii->mii_media_status = 0; 262 return; 263 } 264 265 if (bmcr & BMCR_LOOP) 266 mii->mii_media_active |= IFM_LOOP; 267 268 if (bmcr & BMCR_AUTOEN) { 269 if ((esr & IHPHY_ESR_ANEG_STAT) == 0) { 270 /* Erg, still trying, I guess... */ 271 mii->mii_media_active |= IFM_NONE; 272 return; 273 } 274 } 275 276 switch (esr & IHPHY_ESR_SPEED) { 277 case IHPHY_SPEED_1000: 278 mii->mii_media_active |= IFM_1000_T; 279 PHY_READ(sc, MII_100T2SR, >sr); 280 if (gtsr & GTSR_MS_RES) 281 mii->mii_media_active |= IFM_ETH_MASTER; 282 break; 283 284 case IHPHY_SPEED_100: 285 /* 100BASE-T2 and 100BASE-T4 are not supported. */ 286 mii->mii_media_active |= IFM_100_TX; 287 break; 288 289 case IHPHY_SPEED_10: 290 mii->mii_media_active |= IFM_10_T; 291 break; 292 293 default: 294 mii->mii_media_active |= IFM_NONE; 295 mii->mii_media_status = 0; 296 return; 297 } 298 299 if (esr & IHPHY_ESR_DUPLEX) 300 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc); 301 else 302 mii->mii_media_active |= IFM_HDX; 303 } 304 305 static void 306 ihphy_reset(struct mii_softc *sc) 307 { 308 int i; 309 uint16_t reg; 310 311 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_ISO); 312 313 /* 314 * Regarding reset, the data sheet specifies (page 55): 315 * 316 * "After PHY reset, a delay of 10 ms is required before 317 * any register access using MDIO." 318 */ 319 delay(10000); 320 321 /* Wait another 100ms for it to complete. */ 322 for (i = 0; i < 100; i++) { 323 PHY_READ(sc, MII_BMCR, ®); 324 if ((reg & BMCR_RESET) == 0) 325 break; 326 delay(1000); 327 } 328 329 if (sc->mii_inst != 0) 330 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 331 } 332
Indexes created Thu Oct 16 14:10:15 GMT 2025