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 DEVMETHOD_END 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_PHY_DESC(xxJATO, BASEX), 88 MII_PHY_DESC(xxXAQTI, XMACII), 89 MII_PHY_END 90 }; 91 92 static const struct mii_phy_funcs xmphy_funcs = { 93 xmphy_service, 94 xmphy_status, 95 mii_phy_reset 96 }; 97 98 static int 99 xmphy_probe(device_t dev) 100 { 101 102 return (mii_phy_dev_probe(dev, xmphys, BUS_PROBE_DEFAULT)); 103 } 104 105 static int 106 xmphy_attach(device_t dev) 107 { 108 struct mii_softc *sc; 109 const char *sep = ""; 110 111 sc = device_get_softc(dev); 112 113 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 114 &xmphy_funcs, 0); 115 sc->mii_anegticks = MII_ANEGTICKS; 116 117 PHY_RESET(sc); 118 119 #define ADD(m, c) ifmedia_add(&sc->mii_pdata->mii_media, (m), (c), NULL) 120 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 121 122 device_printf(dev, " "); 123 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 124 XMPHY_BMCR_FDX); 125 PRINT("1000baseSX"); 126 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 127 PRINT("1000baseSX-FDX"); 128 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 129 PRINT("auto"); 130 131 printf("\n"); 132 133 #undef ADD 134 #undef PRINT 135 136 MIIBUS_MEDIAINIT(sc->mii_dev); 137 return (0); 138 } 139 140 static int 141 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 142 { 143 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 144 int reg; 145 146 switch (cmd) { 147 case MII_POLLSTAT: 148 break; 149 150 case MII_MEDIACHG: 151 switch (IFM_SUBTYPE(ife->ifm_media)) { 152 case IFM_AUTO: 153 #ifdef foo 154 /* 155 * If we're already in auto mode, just return. 156 */ 157 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 158 return (0); 159 #endif 160 (void)xmphy_mii_phy_auto(sc); 161 break; 162 case IFM_1000_SX: 163 PHY_RESET(sc); 164 if ((ife->ifm_media & IFM_FDX) != 0) { 165 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 166 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 167 } else { 168 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 169 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 170 } 171 break; 172 default: 173 return (EINVAL); 174 } 175 break; 176 177 case MII_TICK: 178 /* 179 * Only used for autonegotiation. 180 */ 181 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 182 break; 183 184 /* 185 * Check to see if we have link. If we do, we don't 186 * need to restart the autonegotiation process. Read 187 * the BMSR twice in case it's latched. 188 */ 189 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 190 if (reg & BMSR_LINK) 191 break; 192 193 /* Only retry autonegotiation every mii_anegticks seconds. */ 194 if (sc->mii_ticks <= sc->mii_anegticks) 195 break; 196 197 sc->mii_ticks = 0; 198 199 PHY_RESET(sc); 200 xmphy_mii_phy_auto(sc); 201 return (0); 202 } 203 204 /* Update the media status. */ 205 xmphy_status(sc); 206 207 /* Callback if something changed. */ 208 mii_phy_update(sc, cmd); 209 return (0); 210 } 211 212 static void 213 xmphy_status(struct mii_softc *sc) 214 { 215 struct mii_data *mii = sc->mii_pdata; 216 int bmsr, bmcr, anlpar; 217 218 mii->mii_media_status = IFM_AVALID; 219 mii->mii_media_active = IFM_ETHER; 220 221 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 222 PHY_READ(sc, XMPHY_MII_BMSR); 223 if (bmsr & XMPHY_BMSR_LINK) 224 mii->mii_media_status |= IFM_ACTIVE; 225 226 /* Do dummy read of extended status register. */ 227 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 228 229 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 230 231 if (bmcr & XMPHY_BMCR_LOOP) 232 mii->mii_media_active |= IFM_LOOP; 233 234 if (bmcr & XMPHY_BMCR_AUTOEN) { 235 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 236 if (bmsr & XMPHY_BMSR_LINK) { 237 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 238 return; 239 } 240 /* Erg, still trying, I guess... */ 241 mii->mii_media_active |= IFM_NONE; 242 return; 243 } 244 245 mii->mii_media_active |= IFM_1000_SX; 246 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 247 PHY_READ(sc, XMPHY_MII_ANLPAR); 248 if (anlpar & XMPHY_ANLPAR_FDX) 249 mii->mii_media_active |= IFM_FDX; 250 else 251 mii->mii_media_active |= IFM_HDX; 252 return; 253 } 254 255 mii->mii_media_active |= IFM_1000_SX; 256 if (bmcr & XMPHY_BMCR_FDX) 257 mii->mii_media_active |= IFM_FDX; 258 else 259 mii->mii_media_active |= IFM_HDX; 260 } 261 262 static int 263 xmphy_mii_phy_auto(struct mii_softc *mii) 264 { 265 int anar = 0; 266 267 anar = PHY_READ(mii, XMPHY_MII_ANAR); 268 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 269 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 270 DELAY(1000); 271 PHY_WRITE(mii, XMPHY_MII_BMCR, 272 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 273 274 return (EJUSTRETURN); 275 } 276