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 * $FreeBSD$ 33 */ 34 35 /* 36 * driver for the XaQti XMAC II's internal PHY. This is sort of 37 * like a 10/100 PHY, except the only thing we're really autoselecting 38 * here is full/half duplex. Speed is always 1000mbps. 39 */ 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/malloc.h> 45 #include <sys/socket.h> 46 #include <sys/bus.h> 47 48 49 #include <net/if.h> 50 #include <net/if_media.h> 51 52 #include <dev/mii/mii.h> 53 #include <dev/mii/miivar.h> 54 #include <dev/mii/miidevs.h> 55 56 #include <dev/mii/xmphyreg.h> 57 58 #include "miibus_if.h" 59 60 #if !defined(lint) 61 static const char rcsid[] = 62 "$FreeBSD$"; 63 #endif 64 65 static int xmphy_probe(device_t); 66 static int xmphy_attach(device_t); 67 68 static device_method_t xmphy_methods[] = { 69 /* device interface */ 70 DEVMETHOD(device_probe, xmphy_probe), 71 DEVMETHOD(device_attach, xmphy_attach), 72 DEVMETHOD(device_detach, mii_phy_detach), 73 DEVMETHOD(device_shutdown, bus_generic_shutdown), 74 { 0, 0 } 75 }; 76 77 static devclass_t xmphy_devclass; 78 79 static driver_t xmphy_driver = { 80 "xmphy", 81 xmphy_methods, 82 sizeof(struct mii_softc) 83 }; 84 85 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0); 86 87 static int xmphy_service(struct mii_softc *, struct mii_data *, int); 88 static void xmphy_status(struct mii_softc *); 89 static int xmphy_mii_phy_auto(struct mii_softc *); 90 91 static int 92 xmphy_probe(dev) 93 device_t dev; 94 { 95 struct mii_attach_args *ma; 96 97 ma = device_get_ivars(dev); 98 99 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxXAQTI && 100 MII_MODEL(ma->mii_id2) == MII_MODEL_XAQTI_XMACII) { 101 device_set_desc(dev, MII_STR_XAQTI_XMACII); 102 return(0); 103 } 104 105 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_JATO && 106 MII_MODEL(ma->mii_id2) == MII_MODEL_JATO_BASEX) { 107 device_set_desc(dev, MII_STR_JATO_BASEX); 108 return(0); 109 } 110 111 return(ENXIO); 112 } 113 114 static int 115 xmphy_attach(dev) 116 device_t dev; 117 { 118 struct mii_softc *sc; 119 struct mii_attach_args *ma; 120 struct mii_data *mii; 121 const char *sep = ""; 122 123 sc = device_get_softc(dev); 124 ma = device_get_ivars(dev); 125 sc->mii_dev = device_get_parent(dev); 126 mii = device_get_softc(sc->mii_dev); 127 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 128 129 sc->mii_inst = mii->mii_instance; 130 sc->mii_phy = ma->mii_phyno; 131 sc->mii_service = xmphy_service; 132 sc->mii_pdata = mii; 133 134 sc->mii_flags |= MIIF_NOISOLATE; 135 mii->mii_instance++; 136 137 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 138 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 139 140 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 141 BMCR_ISO); 142 #if 0 143 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 144 BMCR_LOOP|BMCR_S100); 145 #endif 146 147 mii_phy_reset(sc); 148 149 device_printf(dev, " "); 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 151 XMPHY_BMCR_FDX); 152 PRINT("1000baseSX"); 153 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 154 PRINT("1000baseSX-FDX"); 155 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 156 PRINT("auto"); 157 158 printf("\n"); 159 #undef ADD 160 #undef PRINT 161 162 MIIBUS_MEDIAINIT(sc->mii_dev); 163 return(0); 164 } 165 166 static int 167 xmphy_service(sc, mii, cmd) 168 struct mii_softc *sc; 169 struct mii_data *mii; 170 int cmd; 171 { 172 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 173 int reg; 174 175 switch (cmd) { 176 case MII_POLLSTAT: 177 /* 178 * If we're not polling our PHY instance, just return. 179 */ 180 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 181 return (0); 182 break; 183 184 case MII_MEDIACHG: 185 /* 186 * If the media indicates a different PHY instance, 187 * isolate ourselves. 188 */ 189 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 190 reg = PHY_READ(sc, MII_BMCR); 191 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 192 return (0); 193 } 194 195 /* 196 * If the interface is not up, don't do anything. 197 */ 198 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 199 break; 200 201 switch (IFM_SUBTYPE(ife->ifm_media)) { 202 case IFM_AUTO: 203 #ifdef foo 204 /* 205 * If we're already in auto mode, just return. 206 */ 207 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 208 return (0); 209 #endif 210 (void) xmphy_mii_phy_auto(sc); 211 break; 212 case IFM_1000_SX: 213 mii_phy_reset(sc); 214 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 215 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 216 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 217 } else { 218 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 219 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 220 } 221 break; 222 case IFM_100_T4: 223 case IFM_100_TX: 224 case IFM_10_T: 225 default: 226 return (EINVAL); 227 } 228 break; 229 230 case MII_TICK: 231 /* 232 * If we're not currently selected, just return. 233 */ 234 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 235 return (0); 236 237 /* 238 * Is the interface even up? 239 */ 240 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 241 return (0); 242 243 /* 244 * Only used for autonegotiation. 245 */ 246 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 247 break; 248 249 /* 250 * Check to see if we have link. If we do, we don't 251 * need to restart the autonegotiation process. Read 252 * the BMSR twice in case it's latched. 253 */ 254 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 255 if (reg & BMSR_LINK) 256 break; 257 258 /* 259 * Only retry autonegotiation every 5 seconds. 260 */ 261 if (++sc->mii_ticks != 5) 262 return (0); 263 264 sc->mii_ticks = 0; 265 266 mii_phy_reset(sc); 267 xmphy_mii_phy_auto(sc); 268 return(0); 269 } 270 271 /* Update the media status. */ 272 xmphy_status(sc); 273 274 /* Callback if something changed. */ 275 mii_phy_update(sc, cmd); 276 return (0); 277 } 278 279 static void 280 xmphy_status(sc) 281 struct mii_softc *sc; 282 { 283 struct mii_data *mii = sc->mii_pdata; 284 int bmsr, bmcr, anlpar; 285 286 mii->mii_media_status = IFM_AVALID; 287 mii->mii_media_active = IFM_ETHER; 288 289 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 290 PHY_READ(sc, XMPHY_MII_BMSR); 291 if (bmsr & XMPHY_BMSR_LINK) 292 mii->mii_media_status |= IFM_ACTIVE; 293 294 /* Do dummy read of extended status register. */ 295 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 296 297 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 298 299 if (bmcr & XMPHY_BMCR_LOOP) 300 mii->mii_media_active |= IFM_LOOP; 301 302 303 if (bmcr & XMPHY_BMCR_AUTOEN) { 304 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 305 if (bmsr & XMPHY_BMSR_LINK) { 306 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 307 return; 308 } 309 /* Erg, still trying, I guess... */ 310 mii->mii_media_active |= IFM_NONE; 311 return; 312 } 313 314 mii->mii_media_active |= IFM_1000_SX; 315 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 316 PHY_READ(sc, XMPHY_MII_ANLPAR); 317 if (anlpar & XMPHY_ANLPAR_FDX) 318 mii->mii_media_active |= IFM_FDX; 319 else 320 mii->mii_media_active |= IFM_HDX; 321 return; 322 } 323 324 mii->mii_media_active |= IFM_1000_SX; 325 if (bmcr & XMPHY_BMCR_FDX) 326 mii->mii_media_active |= IFM_FDX; 327 else 328 mii->mii_media_active |= IFM_HDX; 329 330 return; 331 } 332 333 334 static int 335 xmphy_mii_phy_auto(mii) 336 struct mii_softc *mii; 337 { 338 int anar = 0; 339 340 anar = PHY_READ(mii, XMPHY_MII_ANAR); 341 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 342 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 343 DELAY(1000); 344 PHY_WRITE(mii, XMPHY_MII_BMCR, 345 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 346 347 return (EJUSTRETURN); 348 } 349