1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 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 35 #include <sys/cdefs.h> 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 driver_t xmphy_driver = { 73 "xmphy", 74 xmphy_methods, 75 sizeof(struct mii_softc) 76 }; 77 78 DRIVER_MODULE(xmphy, miibus, xmphy_driver, 0, 0); 79 80 static int xmphy_service(struct mii_softc *, struct mii_data *, int); 81 static void xmphy_status(struct mii_softc *); 82 static int xmphy_mii_phy_auto(struct mii_softc *); 83 84 static const struct mii_phydesc xmphys[] = { 85 MII_PHY_DESC(xxJATO, BASEX), 86 MII_PHY_DESC(xxXAQTI, XMACII), 87 MII_PHY_END 88 }; 89 90 static const struct mii_phy_funcs xmphy_funcs = { 91 xmphy_service, 92 xmphy_status, 93 mii_phy_reset 94 }; 95 96 static int 97 xmphy_probe(device_t dev) 98 { 99 100 return (mii_phy_dev_probe(dev, xmphys, BUS_PROBE_DEFAULT)); 101 } 102 103 static int 104 xmphy_attach(device_t dev) 105 { 106 struct mii_softc *sc; 107 const char *sep = ""; 108 109 sc = device_get_softc(dev); 110 111 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 112 &xmphy_funcs, 0); 113 sc->mii_anegticks = MII_ANEGTICKS; 114 115 PHY_RESET(sc); 116 117 #define ADD(m) ifmedia_add(&sc->mii_pdata->mii_media, (m), 0, NULL) 118 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 119 120 device_printf(dev, " "); 121 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst)); 122 PRINT("1000baseSX"); 123 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst)); 124 PRINT("1000baseSX-FDX"); 125 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst)); 126 PRINT("auto"); 127 128 printf("\n"); 129 130 #undef ADD 131 #undef PRINT 132 133 MIIBUS_MEDIAINIT(sc->mii_dev); 134 return (0); 135 } 136 137 static int 138 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 139 { 140 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 141 int reg; 142 143 switch (cmd) { 144 case MII_POLLSTAT: 145 break; 146 147 case MII_MEDIACHG: 148 switch (IFM_SUBTYPE(ife->ifm_media)) { 149 case IFM_AUTO: 150 #ifdef foo 151 /* 152 * If we're already in auto mode, just return. 153 */ 154 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 155 return (0); 156 #endif 157 (void)xmphy_mii_phy_auto(sc); 158 break; 159 case IFM_1000_SX: 160 PHY_RESET(sc); 161 if ((ife->ifm_media & IFM_FDX) != 0) { 162 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 163 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 164 } else { 165 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 166 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 167 } 168 break; 169 default: 170 return (EINVAL); 171 } 172 break; 173 174 case MII_TICK: 175 /* 176 * Only used for autonegotiation. 177 */ 178 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 179 break; 180 181 /* 182 * Check to see if we have link. If we do, we don't 183 * need to restart the autonegotiation process. Read 184 * the BMSR twice in case it's latched. 185 */ 186 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 187 if (reg & BMSR_LINK) 188 break; 189 190 /* Only retry autonegotiation every mii_anegticks seconds. */ 191 if (sc->mii_ticks <= sc->mii_anegticks) 192 break; 193 194 sc->mii_ticks = 0; 195 196 PHY_RESET(sc); 197 xmphy_mii_phy_auto(sc); 198 return (0); 199 } 200 201 /* Update the media status. */ 202 xmphy_status(sc); 203 204 /* Callback if something changed. */ 205 mii_phy_update(sc, cmd); 206 return (0); 207 } 208 209 static void 210 xmphy_status(struct mii_softc *sc) 211 { 212 struct mii_data *mii = sc->mii_pdata; 213 int bmsr, bmcr, anlpar; 214 215 mii->mii_media_status = IFM_AVALID; 216 mii->mii_media_active = IFM_ETHER; 217 218 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 219 PHY_READ(sc, XMPHY_MII_BMSR); 220 if (bmsr & XMPHY_BMSR_LINK) 221 mii->mii_media_status |= IFM_ACTIVE; 222 223 /* Do dummy read of extended status register. */ 224 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 225 226 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 227 228 if (bmcr & XMPHY_BMCR_LOOP) 229 mii->mii_media_active |= IFM_LOOP; 230 231 if (bmcr & XMPHY_BMCR_AUTOEN) { 232 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 233 if (bmsr & XMPHY_BMSR_LINK) { 234 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 235 return; 236 } 237 /* Erg, still trying, I guess... */ 238 mii->mii_media_active |= IFM_NONE; 239 return; 240 } 241 242 mii->mii_media_active |= IFM_1000_SX; 243 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 244 PHY_READ(sc, XMPHY_MII_ANLPAR); 245 if (anlpar & XMPHY_ANLPAR_FDX) 246 mii->mii_media_active |= IFM_FDX; 247 else 248 mii->mii_media_active |= IFM_HDX; 249 return; 250 } 251 252 mii->mii_media_active |= IFM_1000_SX; 253 if (bmcr & XMPHY_BMCR_FDX) 254 mii->mii_media_active |= IFM_FDX; 255 else 256 mii->mii_media_active |= IFM_HDX; 257 } 258 259 static int 260 xmphy_mii_phy_auto(struct mii_softc *mii) 261 { 262 int anar = 0; 263 264 anar = PHY_READ(mii, XMPHY_MII_ANAR); 265 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 266 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 267 DELAY(1000); 268 PHY_WRITE(mii, XMPHY_MII_BMCR, 269 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 270 271 return (EJUSTRETURN); 272 } 273