ikphy.c revision 1.18
1 /* $NetBSD: ikphy.c,v 1.18 2019/11/27 10:19:20 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 1.18 2019/11/27 10:19:20 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_PHY_DESC(xxMARVELL, I82563), 96 MII_PHY_END, 97 }; 98 99 static int 100 ikphymatch(device_t parent, cfdata_t match, void *aux) 101 { 102 struct mii_attach_args *ma = aux; 103 104 if (mii_phy_match(ma, ikphys) != NULL) 105 return 10; 106 107 return 0; 108 } 109 110 static void 111 ikphyattach(device_t parent, device_t self, void *aux) 112 { 113 struct mii_softc *sc = device_private(self); 114 struct mii_attach_args *ma = aux; 115 struct mii_data *mii = ma->mii_data; 116 const struct mii_phydesc *mpd; 117 118 mpd = mii_phy_match(ma, ikphys); 119 aprint_naive(": Media interface\n"); 120 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 121 122 sc->mii_dev = self; 123 sc->mii_inst = mii->mii_instance; 124 sc->mii_phy = ma->mii_phyno; 125 sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 126 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 127 sc->mii_mpd_rev = MII_REV(ma->mii_id2); 128 sc->mii_funcs = &ikphy_funcs; 129 sc->mii_pdata = mii; 130 sc->mii_flags = ma->mii_flags; 131 132 PHY_RESET(sc); 133 134 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 135 sc->mii_capabilities &= ma->mii_capmask; 136 if (sc->mii_capabilities & BMSR_EXTSTAT) 137 PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities); 138 139 mii_phy_add_media(sc); 140 } 141 142 static int 143 ikphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 144 { 145 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 146 uint16_t reg; 147 148 switch (cmd) { 149 case MII_POLLSTAT: 150 /* If we're not polling our PHY instance, just return. */ 151 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 152 return 0; 153 break; 154 155 case MII_MEDIACHG: 156 /* 157 * If the media indicates a different PHY instance, 158 * isolate ourselves. 159 */ 160 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 161 PHY_READ(sc, MII_BMCR, ®); 162 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 163 return 0; 164 } 165 166 /* If the interface is not up, don't do anything. */ 167 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 168 break; 169 170 ikphy_setmedia(sc); 171 break; 172 173 case MII_TICK: 174 /* If we're not currently selected, just return. */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 176 return 0; 177 178 if (mii_phy_tick(sc) == EJUSTRETURN) 179 return 0; 180 break; 181 182 case MII_DOWN: 183 mii_phy_down(sc); 184 return 0; 185 } 186 187 /* Update the media status. */ 188 mii_phy_status(sc); 189 190 /* Callback if something changed. */ 191 mii_phy_update(sc, cmd); 192 return 0; 193 } 194 195 static void 196 ikphy_setmedia(struct mii_softc *sc) 197 { 198 uint16_t phy_data; 199 struct mii_data *mii = sc->mii_pdata; 200 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 201 202 /* Enable CRS on TX for half-duplex operation. */ 203 PHY_READ(sc, GG82563_PHY_MAC_SPEC_CTRL, &phy_data); 204 phy_data |= GG82563_MSCR_ASSERT_CRS_ON_TX; 205 /* Use 25MHz for both link down and 1000BASE-T for Tx clock */ 206 phy_data |= GG82563_MSCR_TX_CLK_1000MBPS_25MHZ; 207 PHY_WRITE(sc, GG82563_PHY_MAC_SPEC_CTRL, phy_data); 208 209 /* Set mdi/mid-x options */ 210 PHY_READ(sc, GG82563_PHY_SPEC_CTRL, &phy_data); 211 phy_data &= ~GG82563_PSCR_CROSSOVER_MODE_MASK; 212 if (IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO) 213 phy_data |= GG82563_PSCR_CROSSOVER_MODE_AUTO; 214 else 215 phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDI; 216 /* Set polarity correction */ 217 phy_data &= ~GG82563_PSCR_POLARITY_REVERSAL_DISABLE; 218 PHY_WRITE(sc, GG82563_PHY_SPEC_CTRL, phy_data); 219 220 /* SW Reset the PHY so all changes take effect */ 221 PHY_RESET(sc); 222 223 /* For the i80003 */ 224 PHY_READ(sc, GG82563_PHY_SPEC_CTRL_2, &phy_data); 225 phy_data &= ~GG82563_PSCR2_REVERSE_AUTO_NEG; 226 PHY_WRITE(sc, GG82563_PHY_SPEC_CTRL_2, phy_data); 227 228 /* Enable Electrical Idle on the PHY */ 229 PHY_READ(sc, GG82563_PHY_PWR_MGMT_CTRL, &phy_data); 230 phy_data |= GG82563_PMCR_ENABLE_ELECTRICAL_IDLE; 231 PHY_WRITE(sc, GG82563_PHY_PWR_MGMT_CTRL, phy_data); 232 233 PHY_READ(sc, GG82563_PHY_KMRN_MODE_CTRL, &phy_data); 234 phy_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER; 235 PHY_WRITE(sc, GG82563_PHY_KMRN_MODE_CTRL, phy_data); 236 237 /* 238 * Workaround: Disable padding in Kumeran interface in the MAC 239 * and in the PHY to avoid CRC errors. 240 */ 241 PHY_READ(sc, GG82563_PHY_INBAND_CTRL, &phy_data); 242 phy_data |= GG82563_ICR_DIS_PADDING; 243 PHY_WRITE(sc, GG82563_PHY_INBAND_CTRL, phy_data); 244 245 mii_phy_setmedia(sc); 246 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 247 /* 248 * When not in auto mode, we need to restart nego 249 * anyway, or a switch from a fixed mode to another 250 * fixed mode may not be seen by the switch. 251 */ 252 PHY_READ(sc, MII_BMCR, &phy_data); 253 PHY_WRITE(sc, MII_BMCR, phy_data | BMCR_STARTNEG); 254 } 255 PHY_READ(sc, GG82563_PHY_MAC_SPEC_CTRL, &phy_data); 256 phy_data &= ~GG82563_MSCR_TX_CLK_MASK; 257 switch (IFM_SUBTYPE(ife->ifm_media)) { 258 case IFM_10_T: 259 phy_data |= GG82563_MSCR_TX_CLK_10MBPS_2_5MHZ; 260 break; 261 case IFM_100_TX: 262 phy_data |= GG82563_MSCR_TX_CLK_100MBPS_25MHZ; 263 break; 264 case IFM_1000_T: 265 phy_data |= GG82563_MSCR_TX_CLK_1000MBPS_25MHZ; 266 break; 267 } 268 phy_data |= GG82563_MSCR_ASSERT_CRS_ON_TX; 269 PHY_WRITE(sc, GG82563_PHY_MAC_SPEC_CTRL, phy_data); 270 } 271 272 static void 273 ikphy_status(struct mii_softc *sc) 274 { 275 struct mii_data *mii = sc->mii_pdata; 276 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 277 uint16_t pssr, bmcr, gtsr, kmrn; 278 279 mii->mii_media_status = IFM_AVALID; 280 mii->mii_media_active = IFM_ETHER; 281 282 PHY_READ(sc, GG82563_PHY_SPEC_STATUS, &pssr); 283 284 if (pssr & GG82563_PSSR_LINK) 285 mii->mii_media_status |= IFM_ACTIVE; 286 287 PHY_READ(sc, MII_BMCR, &bmcr); 288 if (bmcr & BMCR_ISO) { 289 mii->mii_media_active |= IFM_NONE; 290 mii->mii_media_status = 0; 291 return; 292 } 293 294 if (bmcr & BMCR_LOOP) 295 mii->mii_media_active |= IFM_LOOP; 296 297 if (bmcr & BMCR_AUTOEN) { 298 /* 299 * The media status bits are only valid if autonegotiation 300 * has completed (or it's disabled). 301 */ 302 if ((pssr & GG82563_PSSR_SPEED_DUPLEX_RESOLVED) == 0) { 303 /* Erg, still trying, I guess... */ 304 mii->mii_media_active |= IFM_NONE; 305 return; 306 } 307 308 switch (pssr & GG82563_PSSR_SPEED_MASK) { 309 case GG82563_PSSR_SPEED_1000MBPS: 310 mii->mii_media_active |= IFM_1000_T; 311 PHY_READ(sc, MII_100T2SR, >sr); 312 if (gtsr & GTSR_MS_RES) 313 mii->mii_media_active |= IFM_ETH_MASTER; 314 break; 315 316 case GG82563_PSSR_SPEED_100MBPS: 317 mii->mii_media_active |= IFM_100_TX; 318 break; 319 320 case GG82563_PSSR_SPEED_10MBPS: 321 mii->mii_media_active |= IFM_10_T; 322 break; 323 324 default: 325 mii->mii_media_active |= IFM_NONE; 326 mii->mii_media_status = 0; 327 return; 328 } 329 330 if (pssr & GG82563_PSSR_DUPLEX) 331 mii->mii_media_active |= 332 IFM_FDX | mii_phy_flowstatus(sc); 333 else 334 mii->mii_media_active |= IFM_HDX; 335 } else 336 mii->mii_media_active = ife->ifm_media; 337 PHY_READ(sc, GG82563_PHY_KMRN_MODE_CTRL, &kmrn); 338 if (mii->mii_media_active & IFM_FDX) 339 kmrn &= ~GG82563_KMCR_PASS_FALSE_CARRIER; 340 else 341 kmrn |= GG82563_KMCR_PASS_FALSE_CARRIER; 342 PHY_WRITE(sc, GG82563_PHY_KMRN_MODE_CTRL, kmrn); 343 } 344
Indexes created Tue Sep 30 20:09:53 GMT 2025