1 /* $OpenBSD: xmphy.c,v 1.18 2008/09/17 07:19:19 brad 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/socket.h> 48 #include <sys/errno.h> 49 50 #include <net/if.h> 51 #include <net/if_media.h> 52 53 #include <dev/mii/mii.h> 54 #include <dev/mii/miivar.h> 55 #include <dev/mii/miidevs.h> 56 57 #include <dev/mii/xmphyreg.h> 58 59 int xmphy_probe(struct device *, void *, void *); 60 void xmphy_attach(struct device *, struct device *, void *); 61 62 struct cfattach xmphy_ca = { 63 sizeof(struct mii_softc), xmphy_probe, xmphy_attach, mii_phy_detach, 64 mii_phy_activate 65 }; 66 67 struct cfdriver xmphy_cd = { 68 NULL, "xmphy", DV_DULL 69 }; 70 71 int xmphy_service(struct mii_softc *, struct mii_data *, int); 72 void xmphy_status(struct mii_softc *); 73 74 int xmphy_mii_phy_auto(struct mii_softc *); 75 76 const struct mii_phy_funcs xmphy_funcs = { 77 xmphy_service, xmphy_status, mii_phy_reset, 78 }; 79 80 static const struct mii_phydesc xmphys[] = { 81 { MII_OUI_xxXAQTI, MII_MODEL_XAQTI_XMACII, 82 MII_STR_XAQTI_XMACII }, 83 84 { MII_OUI_JATO, MII_MODEL_JATO_BASEX, 85 MII_STR_JATO_BASEX }, 86 87 { 0, 0, 88 NULL }, 89 }; 90 91 int xmphy_probe(struct device *parent, void *match, void *aux) 92 { 93 struct mii_attach_args *ma = aux; 94 95 if (mii_phy_match(ma, xmphys) != NULL) 96 return (10); 97 98 return (0); 99 } 100 101 void 102 xmphy_attach(struct device *parent, struct device *self, void *aux) 103 { 104 struct mii_softc *sc = (struct mii_softc *)self; 105 struct mii_attach_args *ma = aux; 106 struct mii_data *mii = ma->mii_data; 107 const struct mii_phydesc *mpd; 108 109 mpd = mii_phy_match(ma, xmphys); 110 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 111 112 sc->mii_inst = mii->mii_instance; 113 sc->mii_phy = ma->mii_phyno; 114 sc->mii_funcs = &xmphy_funcs; 115 sc->mii_pdata = mii; 116 sc->mii_flags = ma->mii_flags; 117 sc->mii_anegticks = MII_ANEGTICKS; 118 119 sc->mii_flags |= MIIF_NOISOLATE; 120 121 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 122 123 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 124 BMCR_ISO); 125 126 PHY_RESET(sc); 127 128 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 129 XMPHY_BMCR_FDX); 130 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 131 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 132 133 #undef ADD 134 } 135 136 int 137 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 138 { 139 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 140 int reg; 141 142 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 143 return (ENXIO); 144 145 switch (cmd) { 146 case MII_POLLSTAT: 147 /* 148 * If we're not polling our PHY instance, just return. 149 */ 150 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 151 return (0); 152 break; 153 154 case MII_MEDIACHG: 155 /* 156 * If the media indicates a different PHY instance, 157 * isolate ourselves. 158 */ 159 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 160 reg = PHY_READ(sc, MII_BMCR); 161 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 162 return (0); 163 } 164 165 /* 166 * If the interface is not up, don't do anything. 167 */ 168 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 169 break; 170 171 switch (IFM_SUBTYPE(ife->ifm_media)) { 172 case IFM_AUTO: 173 (void) xmphy_mii_phy_auto(sc); 174 break; 175 case IFM_1000_SX: 176 PHY_RESET(sc); 177 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 178 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 179 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 180 } else { 181 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 182 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 183 } 184 break; 185 default: 186 return (EINVAL); 187 } 188 break; 189 190 case MII_TICK: 191 /* 192 * If we're not currently selected, just return. 193 */ 194 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 195 return (0); 196 197 /* 198 * Is the interface even up? 199 */ 200 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 201 return (0); 202 203 /* 204 * Only used for autonegotiation. 205 */ 206 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 207 break; 208 209 /* 210 * Check to see if we have link. If we do, we don't 211 * need to restart the autonegotiation process. Read 212 * the BMSR twice in case it's latched. 213 */ 214 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 215 if (reg & BMSR_LINK) 216 break; 217 218 /* 219 * Only retry autonegotiation every mii_anegticks seconds. 220 */ 221 if (++sc->mii_ticks <= sc->mii_anegticks) 222 break; 223 224 sc->mii_ticks = 0; 225 PHY_RESET(sc); 226 227 xmphy_mii_phy_auto(sc); 228 break; 229 } 230 231 /* Update the media status. */ 232 mii_phy_status(sc); 233 234 /* Callback if something changed. */ 235 mii_phy_update(sc, cmd); 236 return (0); 237 } 238 239 void 240 xmphy_status(struct mii_softc *sc) 241 { 242 struct mii_data *mii = sc->mii_pdata; 243 int bmsr, bmcr, anlpar; 244 245 mii->mii_media_status = IFM_AVALID; 246 mii->mii_media_active = IFM_ETHER; 247 248 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 249 PHY_READ(sc, XMPHY_MII_BMSR); 250 if (bmsr & XMPHY_BMSR_LINK) 251 mii->mii_media_status |= IFM_ACTIVE; 252 253 /* Do dummy read of extended status register. */ 254 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 255 256 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 257 258 if (bmcr & XMPHY_BMCR_LOOP) 259 mii->mii_media_active |= IFM_LOOP; 260 261 262 if (bmcr & XMPHY_BMCR_AUTOEN) { 263 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 264 if (bmsr & XMPHY_BMSR_LINK) { 265 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 266 return; 267 } 268 /* Erg, still trying, I guess... */ 269 mii->mii_media_active |= IFM_NONE; 270 return; 271 } 272 273 mii->mii_media_active |= IFM_1000_SX; 274 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 275 PHY_READ(sc, XMPHY_MII_ANLPAR); 276 if (anlpar & XMPHY_ANLPAR_FDX) 277 mii->mii_media_active |= IFM_FDX; 278 else 279 mii->mii_media_active |= IFM_HDX; 280 return; 281 } 282 283 mii->mii_media_active |= IFM_1000_SX; 284 if (bmcr & XMPHY_BMCR_FDX) 285 mii->mii_media_active |= IFM_FDX; 286 else 287 mii->mii_media_active |= IFM_HDX; 288 289 return; 290 } 291 292 293 int 294 xmphy_mii_phy_auto(struct mii_softc *sc) 295 { 296 int anar = 0; 297 298 anar = PHY_READ(sc, XMPHY_MII_ANAR); 299 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 300 PHY_WRITE(sc, XMPHY_MII_ANAR, anar); 301 DELAY(1000); 302 PHY_WRITE(sc, XMPHY_MII_BMCR, 303 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 304 305 return (EJUSTRETURN); 306 } 307