1 /* 2 * Copyright (c) 2000 3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 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 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 * $FreeBSD: src/sys/dev/mii/xmphy.c,v 1.1.2.5 2002/11/08 21:53:49 semenu Exp $ 33 * $DragonFly: src/sys/dev/netif/mii_layer/xmphy.c,v 1.10 2006/12/22 23:26:20 swildner Exp $ 34 */ 35 36 /* 37 * driver for the XaQti XMAC II's internal PHY. This is sort of 38 * like a 10/100 PHY, except the only thing we're really autoselecting 39 * here is full/half duplex. Speed is always 1000mbps. 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/socket.h> 46 #include <sys/bus.h> 47 48 #include <machine/clock.h> 49 50 #include <net/if.h> 51 #include <net/if_media.h> 52 53 #include "mii.h" 54 #include "miivar.h" 55 #include "miidevs.h" 56 57 #include "xmphyreg.h" 58 59 #include "miibus_if.h" 60 61 static int xmphy_probe (device_t); 62 static int xmphy_attach (device_t); 63 64 static device_method_t xmphy_methods[] = { 65 /* device interface */ 66 DEVMETHOD(device_probe, xmphy_probe), 67 DEVMETHOD(device_attach, xmphy_attach), 68 DEVMETHOD(device_detach, ukphy_detach), 69 DEVMETHOD(device_shutdown, bus_generic_shutdown), 70 { 0, 0 } 71 }; 72 73 static const struct mii_phydesc xmphys[] = { 74 MII_PHYDESC(xxXAQTI, XMACII), 75 MII_PHYDESC(JATO, BASEX), 76 MII_PHYDESC_NULL 77 }; 78 79 static devclass_t xmphy_devclass; 80 81 static driver_t xmphy_driver = { 82 "xmphy", 83 xmphy_methods, 84 sizeof(struct mii_softc) 85 }; 86 87 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0); 88 89 static int xmphy_service(struct mii_softc *, struct mii_data *, int); 90 static void xmphy_status(struct mii_softc *); 91 92 static int xmphy_mii_phy_auto(struct mii_softc *, int); 93 94 static int 95 xmphy_probe(device_t dev) 96 { 97 struct mii_attach_args *ma = device_get_ivars(dev); 98 const struct mii_phydesc *mpd; 99 100 mpd = mii_phy_match(ma, xmphys); 101 if (mpd != NULL) { 102 device_set_desc(dev, mpd->mpd_name); 103 return (0); 104 } 105 return (ENXIO); 106 } 107 108 static int 109 xmphy_attach(device_t dev) 110 { 111 struct mii_softc *sc; 112 struct mii_attach_args *ma; 113 struct mii_data *mii; 114 const char *sep = ""; 115 116 sc = device_get_softc(dev); 117 ma = device_get_ivars(dev); 118 mii_softc_init(sc, ma); 119 sc->mii_dev = device_get_parent(dev); 120 mii = device_get_softc(sc->mii_dev); 121 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 122 123 sc->mii_inst = mii->mii_instance; 124 sc->mii_service = xmphy_service; 125 sc->mii_reset = mii_phy_reset; 126 sc->mii_pdata = mii; 127 128 sc->mii_flags |= MIIF_NOISOLATE; 129 mii->mii_instance++; 130 131 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 132 #define PRINT(s) kprintf("%s%s", sep, s); sep = ", " 133 134 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 135 BMCR_ISO); 136 #if 0 137 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 138 BMCR_LOOP|BMCR_S100); 139 #endif 140 141 mii_phy_reset(sc); 142 143 device_printf(dev, " "); 144 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 145 XMPHY_BMCR_FDX); 146 PRINT("1000baseSX"); 147 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 148 PRINT("1000baseSX-FDX"); 149 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 150 PRINT("auto"); 151 152 kprintf("\n"); 153 #undef ADD 154 #undef PRINT 155 156 MIIBUS_MEDIAINIT(sc->mii_dev); 157 return(0); 158 } 159 160 int 161 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 162 { 163 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 164 int reg; 165 166 switch (cmd) { 167 case MII_POLLSTAT: 168 /* 169 * If we're not polling our PHY instance, just return. 170 */ 171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 172 return (0); 173 break; 174 175 case MII_MEDIACHG: 176 /* 177 * If the media indicates a different PHY instance, 178 * isolate ourselves. 179 */ 180 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 181 reg = PHY_READ(sc, MII_BMCR); 182 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 183 return (0); 184 } 185 186 /* 187 * If the interface is not up, don't do anything. 188 */ 189 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 190 break; 191 192 switch (IFM_SUBTYPE(ife->ifm_media)) { 193 case IFM_AUTO: 194 #ifdef foo 195 /* 196 * If we're already in auto mode, just return. 197 */ 198 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 199 return (0); 200 #endif 201 xmphy_mii_phy_auto(sc, 1); 202 break; 203 case IFM_1000_SX: 204 mii_phy_reset(sc); 205 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 206 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 207 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 208 } else { 209 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 210 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 211 } 212 break; 213 case IFM_100_T4: 214 case IFM_100_TX: 215 case IFM_10_T: 216 default: 217 return (EINVAL); 218 } 219 break; 220 221 case MII_TICK: 222 /* 223 * If we're not currently selected, just return. 224 */ 225 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 226 return (0); 227 228 /* 229 * Is the interface even up? 230 */ 231 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 232 return (0); 233 234 /* 235 * Only used for autonegotiation. 236 */ 237 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 238 break; 239 240 /* 241 * Check to see if we have link. If we do, we don't 242 * need to restart the autonegotiation process. Read 243 * the BMSR twice in case it's latched. 244 */ 245 reg = PHY_READ(sc, XMPHY_MII_BMSR) | 246 PHY_READ(sc, XMPHY_MII_BMSR); 247 if (reg & XMPHY_BMSR_LINK) 248 break; 249 250 /* 251 * Only retry autonegotiation every mii_anegticks seconds. 252 */ 253 if (++sc->mii_ticks <= sc->mii_anegticks) 254 return (0); 255 256 sc->mii_ticks = 0; 257 258 mii_phy_reset(sc); 259 if (xmphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 260 return(0); 261 break; 262 } 263 264 /* Update the media status. */ 265 xmphy_status(sc); 266 267 /* Callback if something changed. */ 268 mii_phy_update(sc, cmd); 269 return (0); 270 } 271 272 void 273 xmphy_status(struct mii_softc *sc) 274 { 275 struct mii_data *mii = sc->mii_pdata; 276 int bmsr, bmcr, anlpar; 277 278 mii->mii_media_status = IFM_AVALID; 279 mii->mii_media_active = IFM_ETHER; 280 281 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 282 PHY_READ(sc, XMPHY_MII_BMSR); 283 if (bmsr & XMPHY_BMSR_LINK) 284 mii->mii_media_status |= IFM_ACTIVE; 285 286 /* Do dummy read of extended status register. */ 287 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 288 289 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 290 291 if (bmcr & XMPHY_BMCR_LOOP) 292 mii->mii_media_active |= IFM_LOOP; 293 294 if (bmcr & XMPHY_BMCR_AUTOEN) { 295 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 296 if (bmsr & XMPHY_BMSR_LINK) { 297 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 298 return; 299 } 300 /* Erg, still trying, I guess... */ 301 mii->mii_media_active |= IFM_NONE; 302 return; 303 } 304 305 mii->mii_media_active |= IFM_1000_SX; 306 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 307 PHY_READ(sc, XMPHY_MII_ANLPAR); 308 if (anlpar & XMPHY_ANLPAR_FDX) 309 mii->mii_media_active |= IFM_FDX; 310 else 311 mii->mii_media_active |= IFM_HDX; 312 return; 313 } 314 315 mii->mii_media_active |= IFM_1000_SX; 316 if (bmcr & XMPHY_BMCR_FDX) 317 mii->mii_media_active |= IFM_FDX; 318 else 319 mii->mii_media_active |= IFM_HDX; 320 } 321 322 static int 323 xmphy_mii_phy_auto(struct mii_softc *sc, int waitfor) 324 { 325 int bmsr, anar = 0, i; 326 327 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) { 328 anar = PHY_READ(sc, XMPHY_MII_ANAR); 329 anar |= XMPHY_ANAR_FDX | XMPHY_ANAR_HDX; 330 PHY_WRITE(sc, XMPHY_MII_ANAR, anar); 331 DELAY(1000); 332 PHY_WRITE(sc, XMPHY_MII_BMCR, 333 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 334 } 335 336 if (waitfor) { 337 /* Wait 500ms for it to complete. */ 338 for (i = 0; i < 500; i++) { 339 bmsr = PHY_READ(sc, XMPHY_MII_BMSR); 340 if (bmsr & XMPHY_BMSR_ACOMP) 341 return (0); 342 DELAY(1000); 343 } 344 345 /* 346 * Don't need to worry about clearing MIIF_DOINGAUTO. 347 * If that's set, a timeout is pending, and it will 348 * clear the flag. 349 */ 350 return (EIO); 351 } 352 353 /* 354 * Just let it finish asynchronously. This is for the benefit of 355 * the tick handler driving autonegotiation. Don't want 500ms 356 * delays all the time while the system is running! 357 */ 358 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) { 359 sc->mii_flags |= MIIF_DOINGAUTO; 360 callout_reset(&sc->mii_auto_ch, hz >> 1, 361 mii_phy_auto_timeout, sc); 362 } 363 return (EJUSTRETURN); 364 } 365