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 const struct mii_phydesc xmphys[] = { 87 { MII_OUI_xxXAQTI, MII_MODEL_XAQTI_XMACII, MII_STR_XAQTI_XMACII }, 88 MII_PHY_DESC(JATO, BASEX), 89 MII_PHY_END 90 }; 91 92 static int 93 xmphy_probe(device_t dev) 94 { 95 96 return (mii_phy_dev_probe(dev, xmphys, BUS_PROBE_DEFAULT)); 97 } 98 99 static int 100 xmphy_attach(device_t dev) 101 { 102 struct mii_softc *sc; 103 struct mii_attach_args *ma; 104 struct mii_data *mii; 105 const char *sep = ""; 106 107 sc = device_get_softc(dev); 108 ma = device_get_ivars(dev); 109 sc->mii_dev = device_get_parent(dev); 110 mii = ma->mii_data; 111 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 112 113 sc->mii_flags = miibus_get_flags(dev); 114 sc->mii_inst = mii->mii_instance++; 115 sc->mii_phy = ma->mii_phyno; 116 sc->mii_service = xmphy_service; 117 sc->mii_pdata = mii; 118 119 sc->mii_flags |= MIIF_NOISOLATE; 120 sc->mii_anegticks = MII_ANEGTICKS; 121 122 mii_phy_reset(sc); 123 124 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 125 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 126 127 device_printf(dev, " "); 128 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 129 XMPHY_BMCR_FDX); 130 PRINT("1000baseSX"); 131 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 132 PRINT("1000baseSX-FDX"); 133 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 134 PRINT("auto"); 135 136 printf("\n"); 137 #undef ADD 138 #undef PRINT 139 140 MIIBUS_MEDIAINIT(sc->mii_dev); 141 return (0); 142 } 143 144 static int 145 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 146 { 147 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 148 int reg; 149 150 switch (cmd) { 151 case MII_POLLSTAT: 152 break; 153 154 case MII_MEDIACHG: 155 /* 156 * If the interface is not up, don't do anything. 157 */ 158 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 159 break; 160 161 switch (IFM_SUBTYPE(ife->ifm_media)) { 162 case IFM_AUTO: 163 #ifdef foo 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 #endif 170 (void)xmphy_mii_phy_auto(sc); 171 break; 172 case IFM_1000_SX: 173 mii_phy_reset(sc); 174 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 175 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 176 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 177 } else { 178 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 179 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 180 } 181 break; 182 default: 183 return (EINVAL); 184 } 185 break; 186 187 case MII_TICK: 188 /* 189 * Is the interface even up? 190 */ 191 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 192 return (0); 193 194 /* 195 * Only used for autonegotiation. 196 */ 197 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 198 break; 199 200 /* 201 * Check to see if we have link. If we do, we don't 202 * need to restart the autonegotiation process. Read 203 * the BMSR twice in case it's latched. 204 */ 205 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 206 if (reg & BMSR_LINK) 207 break; 208 209 /* Only retry autonegotiation every mii_anegticks seconds. */ 210 if (sc->mii_ticks <= sc->mii_anegticks) 211 break; 212 213 sc->mii_ticks = 0; 214 215 mii_phy_reset(sc); 216 xmphy_mii_phy_auto(sc); 217 return (0); 218 } 219 220 /* Update the media status. */ 221 xmphy_status(sc); 222 223 /* Callback if something changed. */ 224 mii_phy_update(sc, cmd); 225 return (0); 226 } 227 228 static void 229 xmphy_status(struct mii_softc *sc) 230 { 231 struct mii_data *mii = sc->mii_pdata; 232 int bmsr, bmcr, anlpar; 233 234 mii->mii_media_status = IFM_AVALID; 235 mii->mii_media_active = IFM_ETHER; 236 237 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 238 PHY_READ(sc, XMPHY_MII_BMSR); 239 if (bmsr & XMPHY_BMSR_LINK) 240 mii->mii_media_status |= IFM_ACTIVE; 241 242 /* Do dummy read of extended status register. */ 243 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 244 245 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 246 247 if (bmcr & XMPHY_BMCR_LOOP) 248 mii->mii_media_active |= IFM_LOOP; 249 250 251 if (bmcr & XMPHY_BMCR_AUTOEN) { 252 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 253 if (bmsr & XMPHY_BMSR_LINK) { 254 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 255 return; 256 } 257 /* Erg, still trying, I guess... */ 258 mii->mii_media_active |= IFM_NONE; 259 return; 260 } 261 262 mii->mii_media_active |= IFM_1000_SX; 263 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 264 PHY_READ(sc, XMPHY_MII_ANLPAR); 265 if (anlpar & XMPHY_ANLPAR_FDX) 266 mii->mii_media_active |= IFM_FDX; 267 else 268 mii->mii_media_active |= IFM_HDX; 269 return; 270 } 271 272 mii->mii_media_active |= IFM_1000_SX; 273 if (bmcr & XMPHY_BMCR_FDX) 274 mii->mii_media_active |= IFM_FDX; 275 else 276 mii->mii_media_active |= IFM_HDX; 277 } 278 279 static int 280 xmphy_mii_phy_auto(struct mii_softc *mii) 281 { 282 int anar = 0; 283 284 anar = PHY_READ(mii, XMPHY_MII_ANAR); 285 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 286 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 287 DELAY(1000); 288 PHY_WRITE(mii, XMPHY_MII_BMCR, 289 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 290 291 return (EJUSTRETURN); 292 } 293