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 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 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/cdefs.h> 43 __FBSDID("$FreeBSD$"); 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/socket.h> 49 #include <sys/bus.h> 50 51 #include <net/if.h> 52 #include <net/if_media.h> 53 54 #include <dev/mii/mii.h> 55 #include <dev/mii/miivar.h> 56 #include "miidevs.h" 57 58 #include <dev/mii/xmphyreg.h> 59 60 #include "miibus_if.h" 61 62 static int xmphy_probe(device_t); 63 static int xmphy_attach(device_t); 64 65 static device_method_t xmphy_methods[] = { 66 /* device interface */ 67 DEVMETHOD(device_probe, xmphy_probe), 68 DEVMETHOD(device_attach, xmphy_attach), 69 DEVMETHOD(device_detach, mii_phy_detach), 70 DEVMETHOD(device_shutdown, bus_generic_shutdown), 71 { 0, 0 } 72 }; 73 74 static devclass_t xmphy_devclass; 75 76 static driver_t xmphy_driver = { 77 "xmphy", 78 xmphy_methods, 79 sizeof(struct mii_softc) 80 }; 81 82 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0); 83 84 static int xmphy_service(struct mii_softc *, struct mii_data *, int); 85 static void xmphy_status(struct mii_softc *); 86 static int xmphy_mii_phy_auto(struct mii_softc *); 87 88 static int 89 xmphy_probe(dev) 90 device_t dev; 91 { 92 struct mii_attach_args *ma; 93 94 ma = device_get_ivars(dev); 95 96 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxXAQTI && 97 MII_MODEL(ma->mii_id2) == MII_MODEL_XAQTI_XMACII) { 98 device_set_desc(dev, MII_STR_XAQTI_XMACII); 99 return(0); 100 } 101 102 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_JATO && 103 MII_MODEL(ma->mii_id2) == MII_MODEL_JATO_BASEX) { 104 device_set_desc(dev, MII_STR_JATO_BASEX); 105 return(0); 106 } 107 108 return(ENXIO); 109 } 110 111 static int 112 xmphy_attach(dev) 113 device_t dev; 114 { 115 struct mii_softc *sc; 116 struct mii_attach_args *ma; 117 struct mii_data *mii; 118 const char *sep = ""; 119 120 sc = device_get_softc(dev); 121 ma = device_get_ivars(dev); 122 sc->mii_dev = device_get_parent(dev); 123 mii = device_get_softc(sc->mii_dev); 124 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 125 126 sc->mii_inst = mii->mii_instance; 127 sc->mii_phy = ma->mii_phyno; 128 sc->mii_service = xmphy_service; 129 sc->mii_pdata = mii; 130 131 sc->mii_flags |= MIIF_NOISOLATE; 132 mii->mii_instance++; 133 134 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 135 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 136 137 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 138 BMCR_ISO); 139 #if 0 140 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 141 BMCR_LOOP|BMCR_S100); 142 #endif 143 144 mii_phy_reset(sc); 145 146 device_printf(dev, " "); 147 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 148 XMPHY_BMCR_FDX); 149 PRINT("1000baseSX"); 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 151 PRINT("1000baseSX-FDX"); 152 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 153 PRINT("auto"); 154 155 printf("\n"); 156 #undef ADD 157 #undef PRINT 158 159 MIIBUS_MEDIAINIT(sc->mii_dev); 160 return(0); 161 } 162 163 static int 164 xmphy_service(sc, mii, cmd) 165 struct mii_softc *sc; 166 struct mii_data *mii; 167 int cmd; 168 { 169 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 170 int reg; 171 172 switch (cmd) { 173 case MII_POLLSTAT: 174 /* 175 * If we're not polling our PHY instance, just return. 176 */ 177 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 178 return (0); 179 break; 180 181 case MII_MEDIACHG: 182 /* 183 * If the media indicates a different PHY instance, 184 * isolate ourselves. 185 */ 186 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 187 reg = PHY_READ(sc, MII_BMCR); 188 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 189 return (0); 190 } 191 192 /* 193 * If the interface is not up, don't do anything. 194 */ 195 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 196 break; 197 198 switch (IFM_SUBTYPE(ife->ifm_media)) { 199 case IFM_AUTO: 200 #ifdef foo 201 /* 202 * If we're already in auto mode, just return. 203 */ 204 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 205 return (0); 206 #endif 207 (void) xmphy_mii_phy_auto(sc); 208 break; 209 case IFM_1000_SX: 210 mii_phy_reset(sc); 211 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 212 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 213 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 214 } else { 215 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 216 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 217 } 218 break; 219 case IFM_100_T4: 220 case IFM_100_TX: 221 case IFM_10_T: 222 default: 223 return (EINVAL); 224 } 225 break; 226 227 case MII_TICK: 228 /* 229 * If we're not currently selected, just return. 230 */ 231 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 232 return (0); 233 234 /* 235 * Is the interface even up? 236 */ 237 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 238 return (0); 239 240 /* 241 * Only used for autonegotiation. 242 */ 243 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 244 break; 245 246 /* 247 * Check to see if we have link. If we do, we don't 248 * need to restart the autonegotiation process. Read 249 * the BMSR twice in case it's latched. 250 */ 251 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 252 if (reg & BMSR_LINK) 253 break; 254 255 /* 256 * Only retry autonegotiation every 5 seconds. 257 */ 258 if (++sc->mii_ticks != 5) 259 return (0); 260 261 sc->mii_ticks = 0; 262 263 mii_phy_reset(sc); 264 xmphy_mii_phy_auto(sc); 265 return(0); 266 } 267 268 /* Update the media status. */ 269 xmphy_status(sc); 270 271 /* Callback if something changed. */ 272 mii_phy_update(sc, cmd); 273 return (0); 274 } 275 276 static void 277 xmphy_status(sc) 278 struct mii_softc *sc; 279 { 280 struct mii_data *mii = sc->mii_pdata; 281 int bmsr, bmcr, anlpar; 282 283 mii->mii_media_status = IFM_AVALID; 284 mii->mii_media_active = IFM_ETHER; 285 286 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 287 PHY_READ(sc, XMPHY_MII_BMSR); 288 if (bmsr & XMPHY_BMSR_LINK) 289 mii->mii_media_status |= IFM_ACTIVE; 290 291 /* Do dummy read of extended status register. */ 292 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 293 294 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 295 296 if (bmcr & XMPHY_BMCR_LOOP) 297 mii->mii_media_active |= IFM_LOOP; 298 299 300 if (bmcr & XMPHY_BMCR_AUTOEN) { 301 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 302 if (bmsr & XMPHY_BMSR_LINK) { 303 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 304 return; 305 } 306 /* Erg, still trying, I guess... */ 307 mii->mii_media_active |= IFM_NONE; 308 return; 309 } 310 311 mii->mii_media_active |= IFM_1000_SX; 312 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 313 PHY_READ(sc, XMPHY_MII_ANLPAR); 314 if (anlpar & XMPHY_ANLPAR_FDX) 315 mii->mii_media_active |= IFM_FDX; 316 else 317 mii->mii_media_active |= IFM_HDX; 318 return; 319 } 320 321 mii->mii_media_active |= IFM_1000_SX; 322 if (bmcr & XMPHY_BMCR_FDX) 323 mii->mii_media_active |= IFM_FDX; 324 else 325 mii->mii_media_active |= IFM_HDX; 326 327 return; 328 } 329 330 331 static int 332 xmphy_mii_phy_auto(mii) 333 struct mii_softc *mii; 334 { 335 int anar = 0; 336 337 anar = PHY_READ(mii, XMPHY_MII_ANAR); 338 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 339 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 340 DELAY(1000); 341 PHY_WRITE(mii, XMPHY_MII_BMCR, 342 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 343 344 return (EJUSTRETURN); 345 } 346