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 __FBSDID("$FreeBSD$"); 37 38 /* 39 * driver for the XaQti XMAC II's internal PHY. This is sort of 40 * like a 10/100 PHY, except the only thing we're really autoselecting 41 * here is full/half duplex. Speed is always 1000mbps. 42 */ 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/module.h> 48 #include <sys/socket.h> 49 #include <sys/bus.h> 50 51 #include <net/if.h> 52 #include <net/if_media.h> 53 54 #include <dev/mii/mii.h> 55 #include <dev/mii/miivar.h> 56 #include "miidevs.h" 57 58 #include <dev/mii/xmphyreg.h> 59 60 #include "miibus_if.h" 61 62 static int xmphy_probe(device_t); 63 static int xmphy_attach(device_t); 64 65 static device_method_t xmphy_methods[] = { 66 /* device interface */ 67 DEVMETHOD(device_probe, xmphy_probe), 68 DEVMETHOD(device_attach, xmphy_attach), 69 DEVMETHOD(device_detach, mii_phy_detach), 70 DEVMETHOD(device_shutdown, bus_generic_shutdown), 71 DEVMETHOD_END 72 }; 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, 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) ifmedia_add(&sc->mii_pdata->mii_media, (m), 0, 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 PRINT("1000baseSX"); 125 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst)); 126 PRINT("1000baseSX-FDX"); 127 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst)); 128 PRINT("auto"); 129 130 printf("\n"); 131 132 #undef ADD 133 #undef PRINT 134 135 MIIBUS_MEDIAINIT(sc->mii_dev); 136 return (0); 137 } 138 139 static int 140 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 141 { 142 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 143 int reg; 144 145 switch (cmd) { 146 case MII_POLLSTAT: 147 break; 148 149 case MII_MEDIACHG: 150 switch (IFM_SUBTYPE(ife->ifm_media)) { 151 case IFM_AUTO: 152 #ifdef foo 153 /* 154 * If we're already in auto mode, just return. 155 */ 156 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 157 return (0); 158 #endif 159 (void)xmphy_mii_phy_auto(sc); 160 break; 161 case IFM_1000_SX: 162 PHY_RESET(sc); 163 if ((ife->ifm_media & IFM_FDX) != 0) { 164 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 165 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 166 } else { 167 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 168 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 169 } 170 break; 171 default: 172 return (EINVAL); 173 } 174 break; 175 176 case MII_TICK: 177 /* 178 * Only used for autonegotiation. 179 */ 180 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 181 break; 182 183 /* 184 * Check to see if we have link. If we do, we don't 185 * need to restart the autonegotiation process. Read 186 * the BMSR twice in case it's latched. 187 */ 188 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 189 if (reg & BMSR_LINK) 190 break; 191 192 /* Only retry autonegotiation every mii_anegticks seconds. */ 193 if (sc->mii_ticks <= sc->mii_anegticks) 194 break; 195 196 sc->mii_ticks = 0; 197 198 PHY_RESET(sc); 199 xmphy_mii_phy_auto(sc); 200 return (0); 201 } 202 203 /* Update the media status. */ 204 xmphy_status(sc); 205 206 /* Callback if something changed. */ 207 mii_phy_update(sc, cmd); 208 return (0); 209 } 210 211 static void 212 xmphy_status(struct mii_softc *sc) 213 { 214 struct mii_data *mii = sc->mii_pdata; 215 int bmsr, bmcr, anlpar; 216 217 mii->mii_media_status = IFM_AVALID; 218 mii->mii_media_active = IFM_ETHER; 219 220 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 221 PHY_READ(sc, XMPHY_MII_BMSR); 222 if (bmsr & XMPHY_BMSR_LINK) 223 mii->mii_media_status |= IFM_ACTIVE; 224 225 /* Do dummy read of extended status register. */ 226 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 227 228 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 229 230 if (bmcr & XMPHY_BMCR_LOOP) 231 mii->mii_media_active |= IFM_LOOP; 232 233 if (bmcr & XMPHY_BMCR_AUTOEN) { 234 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 235 if (bmsr & XMPHY_BMSR_LINK) { 236 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 237 return; 238 } 239 /* Erg, still trying, I guess... */ 240 mii->mii_media_active |= IFM_NONE; 241 return; 242 } 243 244 mii->mii_media_active |= IFM_1000_SX; 245 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 246 PHY_READ(sc, XMPHY_MII_ANLPAR); 247 if (anlpar & XMPHY_ANLPAR_FDX) 248 mii->mii_media_active |= IFM_FDX; 249 else 250 mii->mii_media_active |= IFM_HDX; 251 return; 252 } 253 254 mii->mii_media_active |= IFM_1000_SX; 255 if (bmcr & XMPHY_BMCR_FDX) 256 mii->mii_media_active |= IFM_FDX; 257 else 258 mii->mii_media_active |= IFM_HDX; 259 } 260 261 static int 262 xmphy_mii_phy_auto(struct mii_softc *mii) 263 { 264 int anar = 0; 265 266 anar = PHY_READ(mii, XMPHY_MII_ANAR); 267 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 268 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 269 DELAY(1000); 270 PHY_WRITE(mii, XMPHY_MII_BMCR, 271 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 272 273 return (EJUSTRETURN); 274 } 275