1 /* $OpenBSD: xmphy.c,v 1.2 2000/08/29 19:00:36 jason Exp $ */ 2 3 /* 4 * Copyright (c) 2000 5 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Bill Paul. 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * $FreeBSD: src/sys/dev/mii/xmphy.c,v 1.1 2000/04/22 01:58:18 wpaul Exp $ 35 */ 36 37 /* 38 * driver for the XaQti XMAC II's internal PHY. This is sort of 39 * like a 10/100 PHY, except the only thing we're really autoselecting 40 * here is full/half duplex. Speed is always 1000mbps. 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/device.h> 47 #include <sys/malloc.h> 48 #include <sys/socket.h> 49 #include <sys/errno.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 <dev/mii/miidevs.h> 57 58 #include <dev/mii/xmphyreg.h> 59 60 int xmphy_probe __P((struct device *, void *, void *)); 61 void xmphy_attach __P((struct device *, struct device *, void *)); 62 63 struct cfattach xmphy_ca = { 64 sizeof(struct mii_softc), xmphy_probe, xmphy_attach, mii_phy_detach, 65 mii_phy_activate 66 }; 67 68 struct cfdriver xmphy_cd = { 69 NULL, "xmphy", DV_DULL 70 }; 71 72 int xmphy_service __P((struct mii_softc *, struct mii_data *, int)); 73 void xmphy_status __P((struct mii_softc *)); 74 75 int xmphy_mii_phy_auto __P((struct mii_softc *, int)); 76 extern void mii_phy_auto_timeout __P((void *)); 77 78 int xmphy_probe(parent, match, aux) 79 struct device *parent; 80 void *match, *aux; 81 { 82 struct mii_attach_args *ma = aux; 83 84 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxXAQTI && 85 MII_MODEL(ma->mii_id2) == MII_MODEL_XAQTI_XMACII) 86 return(10); 87 88 return(0); 89 } 90 91 void 92 xmphy_attach(parent, self, aux) 93 struct device *parent, *self; 94 void *aux; 95 { 96 struct mii_softc *sc = (struct mii_softc *)self; 97 struct mii_attach_args *ma = aux; 98 struct mii_data *mii = ma->mii_data; 99 100 printf(": %s, rev. %d\n", MII_STR_XAQTI_XMACII, MII_REV(ma->mii_id2)); 101 102 sc->mii_inst = mii->mii_instance; 103 sc->mii_phy = ma->mii_phyno; 104 sc->mii_service = xmphy_service; 105 sc->mii_status = xmphy_status; 106 sc->mii_pdata = mii; 107 sc->mii_flags |= MIIF_NOISOLATE | mii->mii_flags; 108 109 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 110 111 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 112 BMCR_ISO); 113 114 mii_phy_reset(sc); 115 116 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 117 XMPHY_BMCR_FDX); 118 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 119 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 120 121 #undef ADD 122 } 123 124 int 125 xmphy_service(sc, mii, cmd) 126 struct mii_softc *sc; 127 struct mii_data *mii; 128 int cmd; 129 { 130 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 131 int reg; 132 133 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 134 return (ENXIO); 135 136 switch (cmd) { 137 case MII_POLLSTAT: 138 /* 139 * If we're not polling our PHY instance, just return. 140 */ 141 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 142 return (0); 143 break; 144 145 case MII_MEDIACHG: 146 /* 147 * If the media indicates a different PHY instance, 148 * isolate ourselves. 149 */ 150 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 151 reg = PHY_READ(sc, MII_BMCR); 152 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 153 return (0); 154 } 155 156 /* 157 * If the interface is not up, don't do anything. 158 */ 159 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 160 break; 161 162 switch (IFM_SUBTYPE(ife->ifm_media)) { 163 case IFM_AUTO: 164 /* 165 * If we're already in auto mode, just return. 166 */ 167 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 168 return (0); 169 (void) xmphy_mii_phy_auto(sc, 1); 170 break; 171 case IFM_1000_SX: 172 mii_phy_reset(sc); 173 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 174 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 175 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 176 } else { 177 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 178 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 179 } 180 break; 181 case IFM_100_T4: 182 case IFM_100_TX: 183 case IFM_10_T: 184 default: 185 return (EINVAL); 186 } 187 break; 188 189 case MII_TICK: 190 /* 191 * If we're not currently selected, just return. 192 */ 193 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 194 return (0); 195 196 /* 197 * Only used for autonegotiation. 198 */ 199 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 200 return (0); 201 202 /* 203 * Is the interface even up? 204 */ 205 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 206 return (0); 207 208 /* 209 * Only retry autonegotiation every 5 seconds. 210 */ 211 if (++sc->mii_ticks != 5) 212 return (0); 213 214 sc->mii_ticks = 0; 215 216 /* 217 * Check to see if we have link. If we do, we don't 218 * need to restart the autonegotiation process. Read 219 * the BMSR twice in case it's latched. 220 */ 221 reg = PHY_READ(sc, XMPHY_MII_BMSR) | 222 PHY_READ(sc, XMPHY_MII_BMSR); 223 if (reg & XMPHY_BMSR_LINK) 224 break; 225 226 mii_phy_reset(sc); 227 if (xmphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 228 return(0); 229 break; 230 } 231 232 /* Update the media status. */ 233 xmphy_status(sc); 234 235 /* Callback if something changed. */ 236 mii_phy_update(sc, cmd); 237 return (0); 238 } 239 240 void 241 xmphy_status(sc) 242 struct mii_softc *sc; 243 { 244 struct mii_data *mii = sc->mii_pdata; 245 int bmsr, bmcr, anlpar; 246 247 mii->mii_media_status = IFM_AVALID; 248 mii->mii_media_active = IFM_ETHER; 249 250 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 251 PHY_READ(sc, XMPHY_MII_BMSR); 252 if (bmsr & XMPHY_BMSR_LINK) 253 mii->mii_media_status |= IFM_ACTIVE; 254 255 /* Do dummy read of extended status register. */ 256 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 257 258 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 259 260 if (bmcr & XMPHY_BMCR_LOOP) 261 mii->mii_media_active |= IFM_LOOP; 262 263 264 if (bmcr & XMPHY_BMCR_AUTOEN) { 265 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 266 if (bmsr & XMPHY_BMSR_LINK) { 267 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 268 return; 269 } 270 /* Erg, still trying, I guess... */ 271 mii->mii_media_active |= IFM_NONE; 272 return; 273 } 274 275 mii->mii_media_active |= IFM_1000_SX; 276 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 277 PHY_READ(sc, XMPHY_MII_ANLPAR); 278 if (anlpar & XMPHY_ANLPAR_FDX) 279 mii->mii_media_active |= IFM_FDX; 280 else 281 mii->mii_media_active |= IFM_HDX; 282 return; 283 } 284 285 mii->mii_media_active |= IFM_1000_SX; 286 if (bmcr & XMPHY_BMCR_FDX) 287 mii->mii_media_active |= IFM_FDX; 288 else 289 mii->mii_media_active |= IFM_HDX; 290 291 return; 292 } 293 294 295 int 296 xmphy_mii_phy_auto(mii, waitfor) 297 struct mii_softc *mii; 298 int waitfor; 299 { 300 int bmsr, i; 301 302 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 303 PHY_WRITE(mii, XMPHY_MII_ANAR, 304 XMPHY_ANAR_FDX|XMPHY_ANAR_HDX); 305 PHY_WRITE(mii, XMPHY_MII_BMCR, 306 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 307 } 308 309 if (waitfor) { 310 /* Wait 500ms for it to complete. */ 311 for (i = 0; i < 500; i++) { 312 if ((bmsr = PHY_READ(mii, XMPHY_MII_BMSR)) & 313 XMPHY_BMSR_ACOMP) 314 return (0); 315 DELAY(1000); 316 #if 0 317 if ((bmsr & BMSR_ACOMP) == 0) 318 printf("%s: autonegotiation failed to complete\n", 319 mii->mii_dev.dv_xname); 320 #endif 321 } 322 323 /* 324 * Don't need to worry about clearing MIIF_DOINGAUTO. 325 * If that's set, a timeout is pending, and it will 326 * clear the flag. 327 */ 328 return (EIO); 329 } 330 331 /* 332 * Just let it finish asynchronously. This is for the benefit of 333 * the tick handler driving autonegotiation. Don't want 500ms 334 * delays all the time while the system is running! 335 */ 336 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 337 mii->mii_flags |= MIIF_DOINGAUTO; 338 timeout(mii_phy_auto_timeout, mii, hz >> 1); 339 } 340 return (EJUSTRETURN); 341 } 342