1 /* $OpenBSD: xmphy.c,v 1.22 2015/03/14 03:38:48 jsg 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/device.h> 46 #include <sys/socket.h> 47 #include <sys/errno.h> 48 49 #include <net/if.h> 50 #include <net/if_var.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 }; 65 66 struct cfdriver xmphy_cd = { 67 NULL, "xmphy", DV_DULL 68 }; 69 70 int xmphy_service(struct mii_softc *, struct mii_data *, int); 71 void xmphy_status(struct mii_softc *); 72 73 int xmphy_mii_phy_auto(struct mii_softc *); 74 75 const struct mii_phy_funcs xmphy_funcs = { 76 xmphy_service, xmphy_status, mii_phy_reset, 77 }; 78 79 static const struct mii_phydesc xmphys[] = { 80 { MII_OUI_xxXAQTI, MII_MODEL_XAQTI_XMACII, 81 MII_STR_XAQTI_XMACII }, 82 83 { MII_OUI_JATO, MII_MODEL_JATO_BASEX, 84 MII_STR_JATO_BASEX }, 85 86 { 0, 0, 87 NULL }, 88 }; 89 90 int xmphy_probe(struct device *parent, void *match, void *aux) 91 { 92 struct mii_attach_args *ma = aux; 93 94 if (mii_phy_match(ma, xmphys) != NULL) 95 return (10); 96 97 return (0); 98 } 99 100 void 101 xmphy_attach(struct device *parent, struct device *self, void *aux) 102 { 103 struct mii_softc *sc = (struct mii_softc *)self; 104 struct mii_attach_args *ma = aux; 105 struct mii_data *mii = ma->mii_data; 106 const struct mii_phydesc *mpd; 107 108 mpd = mii_phy_match(ma, xmphys); 109 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 110 111 sc->mii_inst = mii->mii_instance; 112 sc->mii_phy = ma->mii_phyno; 113 sc->mii_funcs = &xmphy_funcs; 114 sc->mii_pdata = mii; 115 sc->mii_flags = ma->mii_flags; 116 sc->mii_anegticks = MII_ANEGTICKS; 117 118 sc->mii_flags |= MIIF_NOISOLATE; 119 120 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 121 122 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 123 BMCR_ISO); 124 125 PHY_RESET(sc); 126 127 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 128 XMPHY_BMCR_FDX); 129 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 130 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 131 132 #undef ADD 133 } 134 135 int 136 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 137 { 138 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 139 int reg; 140 141 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 142 return (ENXIO); 143 144 switch (cmd) { 145 case MII_POLLSTAT: 146 /* 147 * If we're not polling our PHY instance, just return. 148 */ 149 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 150 return (0); 151 break; 152 153 case MII_MEDIACHG: 154 /* 155 * If the media indicates a different PHY instance, 156 * isolate ourselves. 157 */ 158 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 159 reg = PHY_READ(sc, MII_BMCR); 160 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 161 return (0); 162 } 163 164 /* 165 * If the interface is not up, don't do anything. 166 */ 167 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 168 break; 169 170 switch (IFM_SUBTYPE(ife->ifm_media)) { 171 case IFM_AUTO: 172 (void) xmphy_mii_phy_auto(sc); 173 break; 174 case IFM_1000_SX: 175 PHY_RESET(sc); 176 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 177 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 178 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 179 } else { 180 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 181 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 182 } 183 break; 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 * Is the interface even up? 198 */ 199 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 200 return (0); 201 202 /* 203 * Only used for autonegotiation. 204 */ 205 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 206 break; 207 208 /* 209 * Check to see if we have link. If we do, we don't 210 * need to restart the autonegotiation process. Read 211 * the BMSR twice in case it's latched. 212 */ 213 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 214 if (reg & BMSR_LINK) { 215 sc->mii_ticks = 0; 216 break; 217 } 218 219 /* 220 * Only retry autonegotiation every mii_anegticks seconds. 221 */ 222 if (++sc->mii_ticks <= sc->mii_anegticks) 223 break; 224 225 sc->mii_ticks = 0; 226 PHY_RESET(sc); 227 228 xmphy_mii_phy_auto(sc); 229 break; 230 } 231 232 /* Update the media status. */ 233 mii_phy_status(sc); 234 235 /* Callback if something changed. */ 236 mii_phy_update(sc, cmd); 237 return (0); 238 } 239 240 void 241 xmphy_status(struct mii_softc *sc) 242 { 243 struct mii_data *mii = sc->mii_pdata; 244 int bmsr, bmcr, anlpar; 245 246 mii->mii_media_status = IFM_AVALID; 247 mii->mii_media_active = IFM_ETHER; 248 249 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 250 PHY_READ(sc, XMPHY_MII_BMSR); 251 if (bmsr & XMPHY_BMSR_LINK) 252 mii->mii_media_status |= IFM_ACTIVE; 253 254 /* Do dummy read of extended status register. */ 255 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 256 257 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 258 259 if (bmcr & XMPHY_BMCR_LOOP) 260 mii->mii_media_active |= IFM_LOOP; 261 262 263 if (bmcr & XMPHY_BMCR_AUTOEN) { 264 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 265 if (bmsr & XMPHY_BMSR_LINK) { 266 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 267 return; 268 } 269 /* Erg, still trying, I guess... */ 270 mii->mii_media_active |= IFM_NONE; 271 return; 272 } 273 274 mii->mii_media_active |= IFM_1000_SX; 275 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 276 PHY_READ(sc, XMPHY_MII_ANLPAR); 277 if (anlpar & XMPHY_ANLPAR_FDX) 278 mii->mii_media_active |= IFM_FDX; 279 else 280 mii->mii_media_active |= IFM_HDX; 281 return; 282 } 283 284 mii->mii_media_active |= IFM_1000_SX; 285 if (bmcr & XMPHY_BMCR_FDX) 286 mii->mii_media_active |= IFM_FDX; 287 else 288 mii->mii_media_active |= IFM_HDX; 289 290 return; 291 } 292 293 294 int 295 xmphy_mii_phy_auto(struct mii_softc *sc) 296 { 297 int anar = 0; 298 299 anar = PHY_READ(sc, XMPHY_MII_ANAR); 300 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 301 PHY_WRITE(sc, XMPHY_MII_ANAR, anar); 302 DELAY(1000); 303 PHY_WRITE(sc, XMPHY_MII_BMCR, 304 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 305 306 return (EJUSTRETURN); 307 } 308