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