| 1 | /* $NetBSD: ihphy.c,v 1.10 2016/11/02 07:01:54 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 1.10 2016/11/02 07:01:54 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_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); |
| 136 | sc->mii_mpd_model = MII_MODEL(ma->mii_id2); |
| 137 | sc->mii_mpd_rev = MII_REV(ma->mii_id2); |
| 138 | sc->mii_funcs = &ihphy_funcs; |
| 139 | sc->mii_pdata = mii; |
| 140 | sc->mii_flags = ma->mii_flags; |
| 141 | sc->mii_anegticks = MII_ANEGTICKS; |
| 142 | |
| 143 | PHY_RESET(sc); |
| 144 | |
| 145 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
| 146 | if (sc->mii_capabilities & BMSR_EXTSTAT) |
| 147 | sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); |
| 148 | aprint_normal_dev(self, "" ); |
| 149 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && |
| 150 | (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) |
| 151 | aprint_error("no media present" ); |
| 152 | else |
| 153 | mii_phy_add_media(sc); |
| 154 | aprint_normal("\n" ); |
| 155 | |
| 156 | /* |
| 157 | * Link setup (as done by Intel's Linux driver for the 82577). |
| 158 | */ |
| 159 | reg = PHY_READ(sc, IHPHY_MII_CFG); |
| 160 | reg |= IHPHY_CFG_TX_CRS; |
| 161 | reg |= IHPHY_CFG_DOWN_SHIFT; |
| 162 | PHY_WRITE(sc, IHPHY_MII_CFG, reg); |
| 163 | } |
| 164 | |
| 165 | static int |
| 166 | ihphy_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 | /* |
| 198 | * If media is deselected, disable link (standby). |
| 199 | */ |
| 200 | reg = PHY_READ(sc, IHPHY_MII_ECR); |
| 201 | if (IFM_SUBTYPE(ife->ifm_media) == IFM_NONE) |
| 202 | reg &= ~IHPHY_ECR_LNK_EN; |
| 203 | else |
| 204 | reg |= IHPHY_ECR_LNK_EN; |
| 205 | PHY_WRITE(sc, IHPHY_MII_ECR, reg); |
| 206 | |
| 207 | /* |
| 208 | * XXX Adjust MDI/MDIX configuration? Other settings? |
| 209 | */ |
| 210 | |
| 211 | mii_phy_setmedia(sc); |
| 212 | break; |
| 213 | |
| 214 | case MII_TICK: |
| 215 | /* |
| 216 | * If we're not currently selected, just return. |
| 217 | */ |
| 218 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
| 219 | return 0; |
| 220 | |
| 221 | if (mii_phy_tick(sc) == EJUSTRETURN) |
| 222 | return 0; |
| 223 | break; |
| 224 | |
| 225 | case MII_DOWN: |
| 226 | mii_phy_down(sc); |
| 227 | PHY_WRITE(sc, MII_BMCR, BMCR_PDOWN); |
| 228 | return 0; |
| 229 | } |
| 230 | |
| 231 | /* Update the media status. */ |
| 232 | mii_phy_status(sc); |
| 233 | |
| 234 | /* Callback if something changed. */ |
| 235 | mii_phy_update(sc, cmd); |
| 236 | return 0; |
| 237 | } |
| 238 | |
| 239 | static void |
| 240 | ihphy_status(struct mii_softc *sc) |
| 241 | { |
| 242 | struct mii_data *mii = sc->mii_pdata; |
| 243 | int esr, bmcr, gtsr; |
| 244 | |
| 245 | mii->mii_media_status = IFM_AVALID; |
| 246 | mii->mii_media_active = IFM_ETHER; |
| 247 | |
| 248 | esr = PHY_READ(sc, IHPHY_MII_ESR); |
| 249 | |
| 250 | if (esr & IHPHY_ESR_LINK) |
| 251 | mii->mii_media_status |= IFM_ACTIVE; |
| 252 | |
| 253 | bmcr = PHY_READ(sc, MII_BMCR); |
| 254 | if (bmcr & (BMCR_ISO | BMCR_PDOWN)) { |
| 255 | mii->mii_media_active |= IFM_NONE; |
| 256 | mii->mii_media_status = 0; |
| 257 | return; |
| 258 | } |
| 259 | |
| 260 | if (bmcr & BMCR_LOOP) |
| 261 | mii->mii_media_active |= IFM_LOOP; |
| 262 | |
| 263 | if (bmcr & BMCR_AUTOEN) { |
| 264 | if ((esr & IHPHY_ESR_ANEG_STAT) == 0) { |
| 265 | /* Erg, still trying, I guess... */ |
| 266 | mii->mii_media_active |= IFM_NONE; |
| 267 | return; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | switch (esr & IHPHY_ESR_SPEED) { |
| 272 | case IHPHY_SPEED_1000: |
| 273 | mii->mii_media_active |= IFM_1000_T; |
| 274 | gtsr = PHY_READ(sc, MII_100T2SR); |
| 275 | if (gtsr & GTSR_MS_RES) |
| 276 | mii->mii_media_active |= IFM_ETH_MASTER; |
| 277 | break; |
| 278 | |
| 279 | case IHPHY_SPEED_100: |
| 280 | /* 100BASE-T2 and 100BASE-T4 are not supported. */ |
| 281 | mii->mii_media_active |= IFM_100_TX; |
| 282 | break; |
| 283 | |
| 284 | case IHPHY_SPEED_10: |
| 285 | mii->mii_media_active |= IFM_10_T; |
| 286 | break; |
| 287 | |
| 288 | default: |
| 289 | mii->mii_media_active |= IFM_NONE; |
| 290 | mii->mii_media_status = 0; |
| 291 | return; |
| 292 | } |
| 293 | |
| 294 | if (esr & IHPHY_ESR_DUPLEX) |
| 295 | mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc); |
| 296 | else |
| 297 | mii->mii_media_active |= IFM_HDX; |
| 298 | } |
| 299 | |
| 300 | static void |
| 301 | ihphy_reset(struct mii_softc *sc) |
| 302 | { |
| 303 | int reg, i; |
| 304 | |
| 305 | PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_ISO); |
| 306 | |
| 307 | /* |
| 308 | * Regarding reset, the data sheet specifies (page 55): |
| 309 | * |
| 310 | * "After PHY reset, a delay of 10 ms is required before |
| 311 | * any register access using MDIO." |
| 312 | */ |
| 313 | delay(10000); |
| 314 | |
| 315 | /* Wait another 100ms for it to complete. */ |
| 316 | for (i = 0; i < 100; i++) { |
| 317 | reg = PHY_READ(sc, MII_BMCR); |
| 318 | if ((reg & BMCR_RESET) == 0) |
| 319 | break; |
| 320 | delay(1000); |
| 321 | } |
| 322 | |
| 323 | if (sc->mii_inst != 0) |
| 324 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
| 325 | } |
| 326 | |