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