| 1 | /* $NetBSD: ikphy.c,v 1.12 2016/11/02 07:01:54 msaitoh Exp $ */ |
| 2 | |
| 3 | /******************************************************************************* |
| 4 | Copyright (c) 2001-2005, Intel Corporation |
| 5 | All rights reserved. |
| 6 | |
| 7 | Redistribution and use in source and binary forms, with or without |
| 8 | modification, are permitted provided that the following conditions are met: |
| 9 | |
| 10 | 1. Redistributions of source code must retain the above copyright notice, |
| 11 | this list of conditions and the following disclaimer. |
| 12 | |
| 13 | 2. Redistributions in binary form must reproduce the above copyright |
| 14 | notice, this list of conditions and the following disclaimer in the |
| 15 | documentation and/or other materials provided with the distribution. |
| 16 | |
| 17 | 3. Neither the name of the Intel Corporation nor the names of its |
| 18 | contributors may be used to endorse or promote products derived from |
| 19 | this software without specific prior written permission. |
| 20 | |
| 21 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 22 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 25 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 26 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 27 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 28 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 29 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 30 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 31 | POSSIBILITY OF SUCH DAMAGE. |
| 32 | *******************************************************************************/ |
| 33 | /* |
| 34 | * Copyright (c) 2006 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 i82563 ethernet 10/100/1000 PHY |
| 59 | */ |
| 60 | |
| 61 | #include <sys/cdefs.h> |
| 62 | __KERNEL_RCSID(0, "$NetBSD: ikphy.c,v 1.12 2016/11/02 07:01:54 msaitoh Exp $" ); |
| 63 | |
| 64 | #include <sys/param.h> |
| 65 | #include <sys/systm.h> |
| 66 | #include <sys/kernel.h> |
| 67 | #include <sys/device.h> |
| 68 | #include <sys/socket.h> |
| 69 | #include <sys/errno.h> |
| 70 | |
| 71 | #include <net/if.h> |
| 72 | #include <net/if_media.h> |
| 73 | |
| 74 | #include <dev/mii/mii.h> |
| 75 | #include <dev/mii/miivar.h> |
| 76 | #include <dev/mii/miidevs.h> |
| 77 | |
| 78 | #include <dev/mii/ikphyreg.h> |
| 79 | |
| 80 | static int ikphymatch(device_t, cfdata_t, void *); |
| 81 | static void ikphyattach(device_t, device_t, void *); |
| 82 | |
| 83 | CFATTACH_DECL_NEW(ikphy, sizeof(struct mii_softc), |
| 84 | ikphymatch, ikphyattach, mii_phy_detach, mii_phy_activate); |
| 85 | |
| 86 | static int ikphy_service(struct mii_softc *, struct mii_data *, int); |
| 87 | static void ikphy_status(struct mii_softc *); |
| 88 | static void ikphy_setmedia(struct mii_softc *); |
| 89 | |
| 90 | static const struct mii_phy_funcs ikphy_funcs = { |
| 91 | ikphy_service, ikphy_status, mii_phy_reset, |
| 92 | }; |
| 93 | |
| 94 | static const struct mii_phydesc ikphys[] = { |
| 95 | { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_I82563, |
| 96 | MII_STR_xxMARVELL_I82563 }, |
| 97 | |
| 98 | { 0, 0, |
| 99 | NULL }, |
| 100 | }; |
| 101 | |
| 102 | static int |
| 103 | ikphymatch(device_t parent, cfdata_t match, void *aux) |
| 104 | { |
| 105 | struct mii_attach_args *ma = aux; |
| 106 | |
| 107 | if (mii_phy_match(ma, ikphys) != NULL) |
| 108 | return (10); |
| 109 | |
| 110 | return (0); |
| 111 | } |
| 112 | |
| 113 | static void |
| 114 | ikphyattach(device_t parent, device_t self, void *aux) |
| 115 | { |
| 116 | struct mii_softc *sc = device_private(self); |
| 117 | struct mii_attach_args *ma = aux; |
| 118 | struct mii_data *mii = ma->mii_data; |
| 119 | const struct mii_phydesc *mpd; |
| 120 | |
| 121 | mpd = mii_phy_match(ma, ikphys); |
| 122 | aprint_naive(": Media interface\n" ); |
| 123 | aprint_normal(": %s, rev. %d\n" , mpd->mpd_name, MII_REV(ma->mii_id2)); |
| 124 | |
| 125 | sc->mii_dev = self; |
| 126 | sc->mii_inst = mii->mii_instance; |
| 127 | sc->mii_phy = ma->mii_phyno; |
| 128 | sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); |
| 129 | sc->mii_mpd_model = MII_MODEL(ma->mii_id2); |
| 130 | sc->mii_mpd_rev = MII_REV(ma->mii_id2); |
| 131 | sc->mii_funcs = &ikphy_funcs; |
| 132 | sc->mii_pdata = mii; |
| 133 | sc->mii_flags = ma->mii_flags; |
| 134 | sc->mii_anegticks = MII_ANEGTICKS; |
| 135 | |
| 136 | PHY_RESET(sc); |
| 137 | |
| 138 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
| 139 | if (sc->mii_capabilities & BMSR_EXTSTAT) |
| 140 | sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); |
| 141 | aprint_normal_dev(self, "" ); |
| 142 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && |
| 143 | (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) |
| 144 | aprint_error("no media present" ); |
| 145 | else |
| 146 | mii_phy_add_media(sc); |
| 147 | aprint_normal("\n" ); |
| 148 | } |
| 149 | |
| 150 | static int |
| 151 | ikphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
| 152 | { |
| 153 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
| 154 | int reg; |
| 155 | |
| 156 | switch (cmd) { |
| 157 | case MII_POLLSTAT: |
| 158 | /* |
| 159 | * If we're not polling our PHY instance, just return. |
| 160 | */ |
| 161 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
| 162 | return (0); |
| 163 | break; |
| 164 | |
| 165 | case MII_MEDIACHG: |
| 166 | /* |
| 167 | * If the media indicates a different PHY instance, |
| 168 | * isolate ourselves. |
| 169 | */ |
| 170 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
| 171 | reg = PHY_READ(sc, MII_BMCR); |
| 172 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
| 173 | return (0); |
| 174 | } |
| 175 | |
| 176 | /* |
| 177 | * If the interface is not up, don't do anything. |
| 178 | */ |
| 179 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
| 180 | break; |
| 181 | |
| 182 | ikphy_setmedia(sc); |
| 183 | break; |
| 184 | |
| 185 | case MII_TICK: |
| 186 | /* |
| 187 | * If we're not currently selected, just return. |
| 188 | */ |
| 189 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
| 190 | return (0); |
| 191 | |
| 192 | if (mii_phy_tick(sc) == EJUSTRETURN) |
| 193 | return (0); |
| 194 | break; |
| 195 | |
| 196 | case MII_DOWN: |
| 197 | mii_phy_down(sc); |
| 198 | return (0); |
| 199 | } |
| 200 | |
| 201 | /* Update the media status. */ |
| 202 | mii_phy_status(sc); |
| 203 | |
| 204 | /* Callback if something changed. */ |
| 205 | mii_phy_update(sc, cmd); |
| 206 | return (0); |
| 207 | } |
| 208 | |
| 209 | static void |
| 210 | ikphy_setmedia(struct mii_softc *sc) |
| 211 | { |
| 212 | uint16_t phy_data; |
| 213 | struct mii_data *mii = sc->mii_pdata; |
| 214 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
| 215 | |
| 216 | /* Enable CRS on TX for half-duplex operation. */ |
| 217 | phy_data = PHY_READ(sc, GG82563_PHY_MAC_SPEC_CTRL); |
| 218 | phy_data |= GG82563_MSCR_ASSERT_CRS_ON_TX; |
| 219 | /* Use 25MHz for both link down and 1000BASE-T for Tx clock */ |
| 220 | phy_data |= GG82563_MSCR_TX_CLK_1000MBPS_25MHZ; |
| 221 | PHY_WRITE(sc, GG82563_PHY_MAC_SPEC_CTRL, phy_data); |
| 222 | |
| 223 | /* set mdi/mid-x options */ |
| 224 | phy_data = PHY_READ(sc, GG82563_PHY_SPEC_CTRL); |
| 225 | phy_data &= ~GG82563_PSCR_CROSSOVER_MODE_MASK; |
| 226 | if (IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO) |
| 227 | phy_data |= GG82563_PSCR_CROSSOVER_MODE_AUTO; |
| 228 | else |
| 229 | phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDI; |
| 230 | /* set polarity correction */ |
| 231 | phy_data &= ~GG82563_PSCR_POLARITY_REVERSAL_DISABLE; |
| 232 | PHY_WRITE(sc, GG82563_PHY_SPEC_CTRL, phy_data); |
| 233 | |
| 234 | /* SW Reset the PHY so all changes take effect */ |
| 235 | PHY_RESET(sc); |
| 236 | |
| 237 | /* for the i80003 */ |
| 238 | phy_data = PHY_READ(sc, GG82563_PHY_SPEC_CTRL_2); |
| 239 | phy_data &= ~GG82563_PSCR2_REVERSE_AUTO_NEG; |
| 240 | PHY_WRITE(sc, GG82563_PHY_SPEC_CTRL_2, phy_data); |
| 241 | |
| 242 | /* Enable Electrical Idle on the PHY */ |
| 243 | phy_data = PHY_READ(sc, GG82563_PHY_PWR_MGMT_CTRL); |
| 244 | phy_data |= GG82563_PMCR_ENABLE_ELECTRICAL_IDLE; |
| 245 | PHY_WRITE(sc, GG82563_PHY_PWR_MGMT_CTRL, phy_data); |
| 246 | |
| 247 | phy_data = PHY_READ(sc, GG82563_PHY_KMRN_MODE_CTRL); |
| 248 | phy_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER; |
| 249 | PHY_WRITE(sc, GG82563_PHY_KMRN_MODE_CTRL, phy_data); |
| 250 | |
| 251 | /* |
| 252 | * Workaround: Disable padding in Kumeran interface in the MAC |
| 253 | * and in the PHY to avoid CRC errors. |
| 254 | */ |
| 255 | phy_data = PHY_READ(sc, GG82563_PHY_INBAND_CTRL); |
| 256 | phy_data |= GG82563_ICR_DIS_PADDING; |
| 257 | PHY_WRITE(sc, GG82563_PHY_INBAND_CTRL, phy_data); |
| 258 | |
| 259 | mii_phy_setmedia(sc); |
| 260 | if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { |
| 261 | /* |
| 262 | * when not in auto mode, we need to restart nego |
| 263 | * anyway, or a switch from a fixed mode to another |
| 264 | * fixed mode may not be seen by the switch. |
| 265 | */ |
| 266 | PHY_WRITE(sc, MII_BMCR, |
| 267 | PHY_READ(sc, MII_BMCR) | BMCR_STARTNEG); |
| 268 | } |
| 269 | phy_data = PHY_READ(sc, GG82563_PHY_MAC_SPEC_CTRL); |
| 270 | phy_data &= ~GG82563_MSCR_TX_CLK_MASK; |
| 271 | switch(IFM_SUBTYPE(ife->ifm_media)) { |
| 272 | case IFM_10_T: |
| 273 | phy_data |= GG82563_MSCR_TX_CLK_10MBPS_2_5MHZ; |
| 274 | break; |
| 275 | case IFM_100_TX: |
| 276 | phy_data |= GG82563_MSCR_TX_CLK_100MBPS_25MHZ; |
| 277 | break; |
| 278 | case IFM_1000_T: |
| 279 | phy_data |= GG82563_MSCR_TX_CLK_1000MBPS_25MHZ; |
| 280 | break; |
| 281 | } |
| 282 | phy_data |= GG82563_MSCR_ASSERT_CRS_ON_TX; |
| 283 | PHY_WRITE(sc, GG82563_PHY_MAC_SPEC_CTRL, phy_data); |
| 284 | } |
| 285 | |
| 286 | static void |
| 287 | ikphy_status(struct mii_softc *sc) |
| 288 | { |
| 289 | struct mii_data *mii = sc->mii_pdata; |
| 290 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
| 291 | int pssr, bmcr, gtsr, kmrn; |
| 292 | |
| 293 | mii->mii_media_status = IFM_AVALID; |
| 294 | mii->mii_media_active = IFM_ETHER; |
| 295 | |
| 296 | pssr = PHY_READ(sc, GG82563_PHY_SPEC_STATUS); |
| 297 | |
| 298 | if (pssr & GG82563_PSSR_LINK) |
| 299 | mii->mii_media_status |= IFM_ACTIVE; |
| 300 | |
| 301 | bmcr = PHY_READ(sc, MII_BMCR); |
| 302 | if (bmcr & BMCR_ISO) { |
| 303 | mii->mii_media_active |= IFM_NONE; |
| 304 | mii->mii_media_status = 0; |
| 305 | return; |
| 306 | } |
| 307 | |
| 308 | if (bmcr & BMCR_LOOP) |
| 309 | mii->mii_media_active |= IFM_LOOP; |
| 310 | |
| 311 | if (bmcr & BMCR_AUTOEN) { |
| 312 | /* |
| 313 | * The media status bits are only valid of autonegotiation |
| 314 | * has completed (or it's disabled). |
| 315 | */ |
| 316 | if ((pssr & GG82563_PSSR_SPEED_DUPLEX_RESOLVED) == 0) { |
| 317 | /* Erg, still trying, I guess... */ |
| 318 | mii->mii_media_active |= IFM_NONE; |
| 319 | return; |
| 320 | } |
| 321 | |
| 322 | switch (pssr & GG82563_PSSR_SPEED_MASK) { |
| 323 | case GG82563_PSSR_SPEED_1000MBPS: |
| 324 | mii->mii_media_active |= IFM_1000_T; |
| 325 | gtsr = PHY_READ(sc, MII_100T2SR); |
| 326 | if (gtsr & GTSR_MS_RES) |
| 327 | mii->mii_media_active |= IFM_ETH_MASTER; |
| 328 | break; |
| 329 | |
| 330 | case GG82563_PSSR_SPEED_100MBPS: |
| 331 | mii->mii_media_active |= IFM_100_TX; |
| 332 | break; |
| 333 | |
| 334 | case GG82563_PSSR_SPEED_10MBPS: |
| 335 | mii->mii_media_active |= IFM_10_T; |
| 336 | break; |
| 337 | |
| 338 | default: |
| 339 | mii->mii_media_active |= IFM_NONE; |
| 340 | mii->mii_media_status = 0; |
| 341 | return; |
| 342 | } |
| 343 | |
| 344 | if (pssr & GG82563_PSSR_DUPLEX) |
| 345 | mii->mii_media_active |= |
| 346 | IFM_FDX | mii_phy_flowstatus(sc); |
| 347 | else |
| 348 | mii->mii_media_active |= IFM_HDX; |
| 349 | } else |
| 350 | mii->mii_media_active = ife->ifm_media; |
| 351 | kmrn = PHY_READ(sc, GG82563_PHY_KMRN_MODE_CTRL); |
| 352 | if (mii->mii_media_active & IFM_FDX) |
| 353 | kmrn &= ~GG82563_KMCR_PASS_FALSE_CARRIER; |
| 354 | else |
| 355 | kmrn |= GG82563_KMCR_PASS_FALSE_CARRIER; |
| 356 | PHY_WRITE(sc, GG82563_PHY_KMRN_MODE_CTRL, kmrn); |
| 357 | } |
| 358 | |