acphy.c revision 164834
1/*- 2 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 7 * NASA Ames Research Center. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. Neither the name of The NetBSD Foundation nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/*- 39 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by Manuel Bouyer. 52 * 4. The name of the author may not be used to endorse or promote products 53 * derived from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 56 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 57 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 58 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 59 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 60 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 64 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67#include <sys/cdefs.h> 68__FBSDID("$FreeBSD: head/sys/dev/mii/acphy.c 164834 2006-12-02 21:19:54Z marius $"); 69 70/* 71 * Driver for Altima AC101 10/100 PHY 72 */ 73 74#include <sys/param.h> 75#include <sys/systm.h> 76#include <sys/kernel.h> 77#include <sys/socket.h> 78#include <sys/errno.h> 79#include <sys/module.h> 80#include <sys/bus.h> 81 82#include <net/if.h> 83#include <net/if_media.h> 84 85#include <dev/mii/mii.h> 86#include <dev/mii/miivar.h> 87#include "miidevs.h" 88 89#include <dev/mii/acphyreg.h> 90 91#include "miibus_if.h" 92 93static int acphy_probe(device_t); 94static int acphy_attach(device_t); 95 96static device_method_t acphy_methods[] = { 97 /* device interface */ 98 DEVMETHOD(device_probe, acphy_probe), 99 DEVMETHOD(device_attach, acphy_attach), 100 DEVMETHOD(device_detach, mii_phy_detach), 101 DEVMETHOD(device_shutdown, bus_generic_shutdown), 102 { 0, 0 } 103}; 104 105static devclass_t acphy_devclass; 106 107static driver_t acphy_driver = { 108 "acphy", 109 acphy_methods, 110 sizeof(struct mii_softc) 111}; 112 113DRIVER_MODULE(acphy, miibus, acphy_driver, acphy_devclass, 0, 0); 114 115static int acphy_service(struct mii_softc *, struct mii_data *, int); 116static void acphy_reset(struct mii_softc *); 117static void acphy_status(struct mii_softc *); 118 119static const struct mii_phydesc acphys[] = { 120 MII_PHY_DESC(xxALTIMA, AC101), 121 MII_PHY_DESC(xxALTIMA, AC101L), 122 /* XXX This is reported to work, but it's not from any data sheet. */ 123 MII_PHY_DESC(xxALTIMA, ACXXX), 124 MII_PHY_END 125}; 126 127static int 128acphy_probe(device_t dev) 129{ 130 131 return (mii_phy_dev_probe(dev, acphys, BUS_PROBE_DEFAULT)); 132} 133 134static int 135acphy_attach(device_t dev) 136{ 137 struct mii_softc *sc; 138 struct mii_attach_args *ma; 139 struct mii_data *mii; 140 141 sc = device_get_softc(dev); 142 ma = device_get_ivars(dev); 143 sc->mii_dev = device_get_parent(dev); 144 mii = device_get_softc(sc->mii_dev); 145 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 146 147 sc->mii_inst = mii->mii_instance; 148 sc->mii_phy = ma->mii_phyno; 149 sc->mii_service = acphy_service; 150 sc->mii_pdata = mii; 151 152 mii->mii_instance++; 153 154 acphy_reset(sc); 155 156 sc->mii_capabilities = 157 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 158 device_printf(dev, " "); 159 mii_phy_add_media(sc); 160 printf("\n"); 161 162 MIIBUS_MEDIAINIT(sc->mii_dev); 163 return (0); 164} 165 166static int 167acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 168{ 169 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 170 int reg; 171 172 /* 173 * If we're not selected, then do nothing, just isolate and power 174 * down, if changing media. 175 */ 176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 177 if (cmd == MII_MEDIACHG) { 178 reg = PHY_READ(sc, MII_BMCR); 179 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO | BMCR_PDOWN); 180 } 181 182 return (0); 183 } 184 185 switch (cmd) { 186 case MII_POLLSTAT: 187 break; 188 189 case MII_MEDIACHG: 190 /* 191 * If the interface is not up, don't do anything. 192 */ 193 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 194 break; 195 196 /* Wake & deisolate up if necessary */ 197 reg = PHY_READ(sc, MII_BMCR); 198 if (reg & (BMCR_ISO | BMCR_PDOWN)) 199 PHY_WRITE(sc, MII_BMCR, reg & ~(BMCR_ISO | BMCR_PDOWN)); 200 201 mii_phy_setmedia(sc); 202 break; 203 204 case MII_TICK: 205 /* 206 * Is the interface even up? 207 */ 208 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 209 return (0); 210 211 /* 212 * This PHY's autonegotiation doesn't need to be kicked. 213 */ 214 break; 215 } 216 217 /* Update the media status. */ 218 acphy_status(sc); 219 220 /* Callback if something changed. */ 221 mii_phy_update(sc, cmd); 222 return (0); 223} 224 225static void 226acphy_status(struct mii_softc *sc) 227{ 228 struct mii_data *mii = sc->mii_pdata; 229 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 230 int bmsr, bmcr, diag; 231 232 mii->mii_media_status = IFM_AVALID; 233 mii->mii_media_active = IFM_ETHER; 234 235 bmsr = PHY_READ(sc, MII_BMSR) | 236 PHY_READ(sc, MII_BMSR); 237 if (bmsr & BMSR_LINK) 238 mii->mii_media_status |= IFM_ACTIVE; 239 240 bmcr = PHY_READ(sc, MII_BMCR); 241 if (bmcr & BMCR_ISO) { 242 mii->mii_media_active |= IFM_NONE; 243 mii->mii_media_status = 0; 244 return; 245 } 246 247 if (bmcr & BMCR_LOOP) 248 mii->mii_media_active |= IFM_LOOP; 249 250 if (bmcr & BMCR_AUTOEN) { 251 if ((bmsr & BMSR_ACOMP) == 0) { 252 /* Erg, still trying, I guess... */ 253 mii->mii_media_active |= IFM_NONE; 254 return; 255 } 256 diag = PHY_READ(sc, MII_ACPHY_DIAG); 257 if (diag & AC_DIAG_SPEED) 258 mii->mii_media_active |= IFM_100_TX; 259 else 260 mii->mii_media_active |= IFM_10_T; 261 262 if (diag & AC_DIAG_DUPLEX) 263 mii->mii_media_active |= IFM_FDX; 264 } else 265 mii->mii_media_active = ife->ifm_media; 266} 267 268static void 269acphy_reset(struct mii_softc *sc) 270{ 271 272 mii_phy_reset(sc); 273 PHY_WRITE(sc, MII_ACPHY_INT, 0); 274} 275