ihphy.c revision 1.1.2.1
1 /* $NetBSD: ihphy.c,v 1.1.2.1 2011/06/06 09:08:06 jruoho 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 1.1.2.1 2011/06/06 09:08:06 jruoho 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 }, 101 102 { 0, 0, 103 NULL }, 104 }; 105 106 static int 107 ihphymatch(device_t parent, cfdata_t match, void *aux) 108 { 109 struct mii_attach_args *ma = aux; 110 111 if (mii_phy_match(ma, ihphys) != NULL) 112 return 10; 113 114 return 0; 115 } 116 117 static void 118 ihphyattach(device_t parent, device_t self, void *aux) 119 { 120 struct mii_softc *sc = device_private(self); 121 struct mii_attach_args *ma = aux; 122 struct mii_data *mii = ma->mii_data; 123 const struct mii_phydesc *mpd; 124 int reg; 125 126 mpd = mii_phy_match(ma, ihphys); 127 aprint_naive(": Media interface\n"); 128 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 129 130 sc->mii_dev = self; 131 sc->mii_inst = mii->mii_instance; 132 sc->mii_phy = ma->mii_phyno; 133 sc->mii_funcs = &ihphy_funcs; 134 sc->mii_pdata = mii; 135 sc->mii_flags = ma->mii_flags; 136 sc->mii_anegticks = MII_ANEGTICKS; 137 138 PHY_RESET(sc); 139 140 sc->mii_capabilities = 141 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 142 if (sc->mii_capabilities & BMSR_EXTSTAT) 143 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 144 aprint_normal_dev(self, ""); 145 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 146 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 147 aprint_error("no media present"); 148 else 149 mii_phy_add_media(sc); 150 aprint_normal("\n"); 151 152 /* 153 * Link setup (as done by Intel's Linux driver for the 82577). 154 */ 155 reg = PHY_READ(sc, IHPHY_MII_CFG); 156 reg |= IHPHY_CFG_TX_CRS; 157 reg |= IHPHY_CFG_DOWN_SHIFT; 158 PHY_WRITE(sc, IHPHY_MII_CFG, reg); 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 int reg; 166 167 switch (cmd) { 168 case MII_POLLSTAT: 169 /* 170 * If we're not polling our PHY instance, just return. 171 */ 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 reg = PHY_READ(sc, MII_BMCR); 183 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 184 return 0; 185 } 186 187 /* 188 * If the interface is not up, don't do anything. 189 */ 190 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 191 break; 192 193 /* 194 * If media is deselected, disable link (standby). 195 */ 196 reg = PHY_READ(sc, IHPHY_MII_ECR); 197 if (IFM_SUBTYPE(ife->ifm_media) == IFM_NONE) 198 reg &= ~IHPHY_ECR_LNK_EN; 199 else 200 reg |= IHPHY_ECR_LNK_EN; 201 PHY_WRITE(sc, IHPHY_MII_ECR, reg); 202 203 /* 204 * XXX Adjust MDI/MDIX configuration? Other settings? 205 */ 206 207 mii_phy_setmedia(sc); 208 break; 209 210 case MII_TICK: 211 /* 212 * If we're not currently selected, just return. 213 */ 214 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 215 return 0; 216 217 /* 218 * Only used for autonegotiation. 219 */ 220 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 221 return 0; 222 223 if (mii_phy_tick(sc) == EJUSTRETURN) 224 return 0; 225 break; 226 227 case MII_DOWN: 228 mii_phy_down(sc); 229 PHY_WRITE(sc, MII_BMCR, BMCR_PDOWN); 230 return 0; 231 } 232 233 /* Update the media status. */ 234 mii_phy_status(sc); 235 236 /* Callback if something changed. */ 237 mii_phy_update(sc, cmd); 238 return 0; 239 } 240 241 static void 242 ihphy_status(struct mii_softc *sc) 243 { 244 struct mii_data *mii = sc->mii_pdata; 245 int esr, bmcr, gtsr; 246 247 mii->mii_media_status = IFM_AVALID; 248 mii->mii_media_active = IFM_ETHER; 249 250 esr = PHY_READ(sc, IHPHY_MII_ESR); 251 252 if (esr & IHPHY_ESR_LINK) 253 mii->mii_media_status |= IFM_ACTIVE; 254 255 bmcr = PHY_READ(sc, MII_BMCR); 256 if (bmcr & (BMCR_ISO | BMCR_PDOWN)) { 257 mii->mii_media_active |= IFM_NONE; 258 mii->mii_media_status = 0; 259 return; 260 } 261 262 if (bmcr & BMCR_LOOP) 263 mii->mii_media_active |= IFM_LOOP; 264 265 if (bmcr & BMCR_AUTOEN) { 266 if ((esr & IHPHY_ESR_ANEG_STAT) == 0) { 267 /* Erg, still trying, I guess... */ 268 mii->mii_media_active |= IFM_NONE; 269 return; 270 } 271 } 272 273 switch (esr & IHPHY_ESR_SPEED) { 274 case IHPHY_SPEED_1000: 275 mii->mii_media_active |= IFM_1000_T; 276 gtsr = PHY_READ(sc, MII_100T2SR); 277 if (gtsr & GTSR_MS_RES) 278 mii->mii_media_active |= IFM_ETH_MASTER; 279 break; 280 281 case IHPHY_SPEED_100: 282 /* 100BASE-T2 and 100BASE-T4 are not supported. */ 283 mii->mii_media_active |= IFM_100_TX; 284 break; 285 286 case IHPHY_SPEED_10: 287 mii->mii_media_active |= IFM_10_T; 288 break; 289 290 default: 291 mii->mii_media_active |= IFM_NONE; 292 mii->mii_media_status = 0; 293 return; 294 } 295 296 if (esr & IHPHY_ESR_DUPLEX) 297 mii->mii_media_active |= 298 IFM_FDX | mii_phy_flowstatus(sc); 299 } 300 301 static void 302 ihphy_reset(struct mii_softc *sc) 303 { 304 int reg, i; 305 306 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_ISO); 307 308 /* 309 * Regarding reset, the data sheet specifies (page 55): 310 * 311 * "After PHY reset, a delay of 10 ms is required before 312 * any register access using MDIO." 313 */ 314 delay(10000); 315 316 /* Wait another 100ms for it to complete. */ 317 for (i = 0; i < 100; i++) { 318 reg = PHY_READ(sc, MII_BMCR); 319 if ((reg & BMCR_RESET) == 0) 320 break; 321 delay(1000); 322 } 323 324 if (sc->mii_inst != 0) 325 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 326 } 327
Indexes created Wed Oct 15 16:09:53 GMT 2025