ihphy.c revision 1.17
1 /* $NetBSD: ihphy.c,v 1.17 2020/03/15 23:04:50 thorpej 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 1.17 2020/03/15 23:04:50 thorpej 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_PHY_DESC(INTEL, I82577), 98 MII_PHY_DESC(INTEL, I82579), 99 MII_PHY_DESC(INTEL, I217), 100 MII_PHY_DESC(INTEL, I82580), 101 MII_PHY_DESC(INTEL, I350), 102 MII_PHY_END, 103 }; 104 105 static int 106 ihphymatch(device_t parent, cfdata_t match, void *aux) 107 { 108 struct mii_attach_args *ma = aux; 109 110 if (mii_phy_match(ma, ihphys) != NULL) 111 return 10; 112 113 return 0; 114 } 115 116 static void 117 ihphyattach(device_t parent, device_t self, void *aux) 118 { 119 struct mii_softc *sc = device_private(self); 120 struct mii_attach_args *ma = aux; 121 struct mii_data *mii = ma->mii_data; 122 const struct mii_phydesc *mpd; 123 uint16_t reg; 124 125 mpd = mii_phy_match(ma, ihphys); 126 aprint_naive(": Media interface\n"); 127 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 128 129 sc->mii_dev = self; 130 sc->mii_inst = mii->mii_instance; 131 sc->mii_phy = ma->mii_phyno; 132 sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 133 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 134 sc->mii_mpd_rev = MII_REV(ma->mii_id2); 135 sc->mii_funcs = &ihphy_funcs; 136 sc->mii_pdata = mii; 137 sc->mii_flags = ma->mii_flags; 138 139 mii_lock(mii); 140 141 PHY_RESET(sc); 142 143 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 144 sc->mii_capabilities &= ma->mii_capmask; 145 if (sc->mii_capabilities & BMSR_EXTSTAT) 146 PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities); 147 148 mii_unlock(mii); 149 150 mii_phy_add_media(sc); 151 152 mii_lock(mii); 153 /* Link setup (as done by Intel's Linux driver for the 82577). */ 154 PHY_READ(sc, IHPHY_MII_CFG, ®); 155 reg |= IHPHY_CFG_TX_CRS; 156 reg |= IHPHY_CFG_DOWN_SHIFT; 157 PHY_WRITE(sc, IHPHY_MII_CFG, reg); 158 mii_unlock(mii); 159 } 160 161 static int 162 ihphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 163 { 164 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 165 uint16_t reg; 166 167 KASSERT(mii_locked(mii)); 168 169 switch (cmd) { 170 case MII_POLLSTAT: 171 /* If we're not polling our PHY instance, just return. */ 172 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 173 return 0; 174 break; 175 176 case MII_MEDIACHG: 177 /* 178 * If the media indicates a different PHY instance, 179 * isolate ourselves. 180 */ 181 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 182 PHY_READ(sc, MII_BMCR, ®); 183 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 184 return 0; 185 } 186 187 /* If the interface is not up, don't do anything. */ 188 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 189 break; 190 191 /* If media is deselected, disable link (standby). */ 192 PHY_READ(sc, IHPHY_MII_ECR, ®); 193 if (IFM_SUBTYPE(ife->ifm_media) == IFM_NONE) 194 reg &= ~IHPHY_ECR_LNK_EN; 195 else 196 reg |= IHPHY_ECR_LNK_EN; 197 PHY_WRITE(sc, IHPHY_MII_ECR, reg); 198 199 /* XXX Adjust MDI/MDIX configuration? Other settings? */ 200 201 mii_phy_setmedia(sc); 202 break; 203 204 case MII_TICK: 205 /* If we're not currently selected, just return. */ 206 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 207 return 0; 208 209 if (mii_phy_tick(sc) == EJUSTRETURN) 210 return 0; 211 break; 212 213 case MII_DOWN: 214 mii_phy_down(sc); 215 PHY_WRITE(sc, MII_BMCR, BMCR_PDOWN); 216 return 0; 217 } 218 219 /* Update the media status. */ 220 mii_phy_status(sc); 221 222 /* Callback if something changed. */ 223 mii_phy_update(sc, cmd); 224 return 0; 225 } 226 227 static void 228 ihphy_status(struct mii_softc *sc) 229 { 230 struct mii_data *mii = sc->mii_pdata; 231 uint16_t esr, bmcr, gtsr; 232 233 KASSERT(mii_locked(mii)); 234 235 mii->mii_media_status = IFM_AVALID; 236 mii->mii_media_active = IFM_ETHER; 237 238 PHY_READ(sc, IHPHY_MII_ESR, &esr); 239 240 if (esr & IHPHY_ESR_LINK) 241 mii->mii_media_status |= IFM_ACTIVE; 242 243 PHY_READ(sc, MII_BMCR, &bmcr); 244 if (bmcr & (BMCR_ISO | BMCR_PDOWN)) { 245 mii->mii_media_active |= IFM_NONE; 246 mii->mii_media_status = 0; 247 return; 248 } 249 250 if (bmcr & BMCR_LOOP) 251 mii->mii_media_active |= IFM_LOOP; 252 253 if (bmcr & BMCR_AUTOEN) { 254 if ((esr & IHPHY_ESR_ANEG_STAT) == 0) { 255 /* Erg, still trying, I guess... */ 256 mii->mii_media_active |= IFM_NONE; 257 return; 258 } 259 } 260 261 switch (esr & IHPHY_ESR_SPEED) { 262 case IHPHY_SPEED_1000: 263 mii->mii_media_active |= IFM_1000_T; 264 PHY_READ(sc, MII_100T2SR, >sr); 265 if (gtsr & GTSR_MS_RES) 266 mii->mii_media_active |= IFM_ETH_MASTER; 267 break; 268 269 case IHPHY_SPEED_100: 270 /* 100BASE-T2 and 100BASE-T4 are not supported. */ 271 mii->mii_media_active |= IFM_100_TX; 272 break; 273 274 case IHPHY_SPEED_10: 275 mii->mii_media_active |= IFM_10_T; 276 break; 277 278 default: 279 mii->mii_media_active |= IFM_NONE; 280 mii->mii_media_status = 0; 281 return; 282 } 283 284 if (esr & IHPHY_ESR_DUPLEX) 285 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc); 286 else 287 mii->mii_media_active |= IFM_HDX; 288 } 289 290 static void 291 ihphy_reset(struct mii_softc *sc) 292 { 293 int i; 294 uint16_t reg; 295 296 KASSERT(mii_locked(sc->mii_pdata)); 297 298 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_ISO); 299 300 /* Wait another 100ms for it to complete. */ 301 for (i = 0; i < 100; i++) { 302 PHY_READ(sc, MII_BMCR, ®); 303 if ((reg & BMCR_RESET) == 0) 304 break; 305 delay(1000); 306 } 307 308 if (sc->mii_inst != 0) 309 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 310 } 311
Indexes created Tue Sep 30 20:09:53 GMT 2025