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 devclass_t xmphy_devclass; 75 76 static driver_t xmphy_driver = { 77 "xmphy", 78 xmphy_methods, 79 sizeof(struct mii_softc) 80 }; 81 82 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0); 83 84 static int xmphy_service(struct mii_softc *, struct mii_data *, int); 85 static void xmphy_status(struct mii_softc *); 86 static int xmphy_mii_phy_auto(struct mii_softc *); 87 88 static const struct mii_phydesc xmphys[] = { 89 MII_PHY_DESC(xxJATO, BASEX), 90 MII_PHY_DESC(xxXAQTI, XMACII), 91 MII_PHY_END 92 }; 93 94 static const struct mii_phy_funcs xmphy_funcs = { 95 xmphy_service, 96 xmphy_status, 97 mii_phy_reset 98 }; 99 100 static int 101 xmphy_probe(device_t dev) 102 { 103 104 return (mii_phy_dev_probe(dev, xmphys, BUS_PROBE_DEFAULT)); 105 } 106 107 static int 108 xmphy_attach(device_t dev) 109 { 110 struct mii_softc *sc; 111 const char *sep = ""; 112 113 sc = device_get_softc(dev); 114 115 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 116 &xmphy_funcs, 0); 117 sc->mii_anegticks = MII_ANEGTICKS; 118 119 PHY_RESET(sc); 120 121 #define ADD(m) ifmedia_add(&sc->mii_pdata->mii_media, (m), 0, NULL) 122 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 123 124 device_printf(dev, " "); 125 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst)); 126 PRINT("1000baseSX"); 127 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst)); 128 PRINT("1000baseSX-FDX"); 129 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst)); 130 PRINT("auto"); 131 132 printf("\n"); 133 134 #undef ADD 135 #undef PRINT 136 137 MIIBUS_MEDIAINIT(sc->mii_dev); 138 return (0); 139 } 140 141 static int 142 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 143 { 144 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 145 int reg; 146 147 switch (cmd) { 148 case MII_POLLSTAT: 149 break; 150 151 case MII_MEDIACHG: 152 switch (IFM_SUBTYPE(ife->ifm_media)) { 153 case IFM_AUTO: 154 #ifdef foo 155 /* 156 * If we're already in auto mode, just return. 157 */ 158 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 159 return (0); 160 #endif 161 (void)xmphy_mii_phy_auto(sc); 162 break; 163 case IFM_1000_SX: 164 PHY_RESET(sc); 165 if ((ife->ifm_media & IFM_FDX) != 0) { 166 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 167 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 168 } else { 169 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 170 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 171 } 172 break; 173 default: 174 return (EINVAL); 175 } 176 break; 177 178 case MII_TICK: 179 /* 180 * Only used for autonegotiation. 181 */ 182 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 183 break; 184 185 /* 186 * Check to see if we have link. If we do, we don't 187 * need to restart the autonegotiation process. Read 188 * the BMSR twice in case it's latched. 189 */ 190 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 191 if (reg & BMSR_LINK) 192 break; 193 194 /* Only retry autonegotiation every mii_anegticks seconds. */ 195 if (sc->mii_ticks <= sc->mii_anegticks) 196 break; 197 198 sc->mii_ticks = 0; 199 200 PHY_RESET(sc); 201 xmphy_mii_phy_auto(sc); 202 return (0); 203 } 204 205 /* Update the media status. */ 206 xmphy_status(sc); 207 208 /* Callback if something changed. */ 209 mii_phy_update(sc, cmd); 210 return (0); 211 } 212 213 static void 214 xmphy_status(struct mii_softc *sc) 215 { 216 struct mii_data *mii = sc->mii_pdata; 217 int bmsr, bmcr, anlpar; 218 219 mii->mii_media_status = IFM_AVALID; 220 mii->mii_media_active = IFM_ETHER; 221 222 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 223 PHY_READ(sc, XMPHY_MII_BMSR); 224 if (bmsr & XMPHY_BMSR_LINK) 225 mii->mii_media_status |= IFM_ACTIVE; 226 227 /* Do dummy read of extended status register. */ 228 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 229 230 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 231 232 if (bmcr & XMPHY_BMCR_LOOP) 233 mii->mii_media_active |= IFM_LOOP; 234 235 if (bmcr & XMPHY_BMCR_AUTOEN) { 236 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 237 if (bmsr & XMPHY_BMSR_LINK) { 238 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 239 return; 240 } 241 /* Erg, still trying, I guess... */ 242 mii->mii_media_active |= IFM_NONE; 243 return; 244 } 245 246 mii->mii_media_active |= IFM_1000_SX; 247 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 248 PHY_READ(sc, XMPHY_MII_ANLPAR); 249 if (anlpar & XMPHY_ANLPAR_FDX) 250 mii->mii_media_active |= IFM_FDX; 251 else 252 mii->mii_media_active |= IFM_HDX; 253 return; 254 } 255 256 mii->mii_media_active |= IFM_1000_SX; 257 if (bmcr & XMPHY_BMCR_FDX) 258 mii->mii_media_active |= IFM_FDX; 259 else 260 mii->mii_media_active |= IFM_HDX; 261 } 262 263 static int 264 xmphy_mii_phy_auto(struct mii_softc *mii) 265 { 266 int anar = 0; 267 268 anar = PHY_READ(mii, XMPHY_MII_ANAR); 269 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 270 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 271 DELAY(1000); 272 PHY_WRITE(mii, XMPHY_MII_BMCR, 273 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 274 275 return (EJUSTRETURN); 276 } 277