acphy.c revision 164827
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 164827 2006-12-02 15:32:34Z 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 MII_PHY_END 123}; 124 125static int 126acphy_probe(device_t dev) 127{ 128 129 return (mii_phy_dev_probe(dev, acphys, BUS_PROBE_DEFAULT)); 130} 131 132static int 133acphy_attach(device_t dev) 134{ 135 struct mii_softc *sc; 136 struct mii_attach_args *ma; 137 struct mii_data *mii; 138 139 sc = device_get_softc(dev); 140 ma = device_get_ivars(dev); 141 sc->mii_dev = device_get_parent(dev); 142 mii = device_get_softc(sc->mii_dev); 143 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 144 145 sc->mii_inst = mii->mii_instance; 146 sc->mii_phy = ma->mii_phyno; 147 sc->mii_service = acphy_service; 148 sc->mii_pdata = mii; 149 sc->mii_flags |= MIIF_NOISOLATE; 150 151 acphy_reset(sc); 152 153 mii->mii_instance++; 154 155 sc->mii_capabilities = 156 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 157 device_printf(dev, " "); 158 mii_add_media(sc); 159 printf("\n"); 160 161 MIIBUS_MEDIAINIT(sc->mii_dev); 162 return (0); 163} 164 165static int 166acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 167{ 168 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 169 int reg; 170 171 /* 172 * If we're not selected, then do nothing, just isolate and power 173 * down, if changing media. 174 */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 176 if (cmd == MII_MEDIACHG) { 177 reg = PHY_READ(sc, MII_BMCR); 178 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO | BMCR_PDOWN); 179 } 180 181 return (0); 182 } 183 184 switch (cmd) { 185 case MII_POLLSTAT: 186 break; 187 188 case MII_MEDIACHG: 189 /* 190 * If the interface is not up, don't do anything. 191 */ 192 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 193 break; 194 195 /* Wake & deisolate up if necessary */ 196 reg = PHY_READ(sc, MII_BMCR); 197 if (reg & (BMCR_ISO | BMCR_PDOWN)) 198 PHY_WRITE(sc, MII_BMCR, reg & ~(BMCR_ISO | BMCR_PDOWN)); 199 200 switch (IFM_SUBTYPE(ife->ifm_media)) { 201 case IFM_AUTO: 202 /* 203 * If we're already in auto mode, just return. 204 */ 205 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 206 return (0); 207 208 (void) mii_phy_auto(sc); 209 break; 210 211 default: 212 /* 213 * BMCR data is stored in the ifmedia entry. 214 */ 215 PHY_WRITE(sc, MII_ANAR, 216 mii_anar(ife->ifm_media)); 217 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 218 } 219 break; 220 221 case MII_TICK: 222 /* 223 * Is the interface even up? 224 */ 225 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 226 return (0); 227 228 /* 229 * Only used for autonegotiation. 230 */ 231 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 232 break; 233 234 /* 235 * This PHY's autonegotiation doesn't need to be kicked. 236 */ 237 break; 238 } 239 240 /* Update the media status. */ 241 acphy_status(sc); 242 243 /* Callback if something changed. */ 244 mii_phy_update(sc, cmd); 245 return (0); 246} 247 248static void 249acphy_status(struct mii_softc *sc) 250{ 251 struct mii_data *mii = sc->mii_pdata; 252 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 253 int bmsr, bmcr, diag; 254 255 mii->mii_media_status = IFM_AVALID; 256 mii->mii_media_active = IFM_ETHER; 257 258 bmsr = PHY_READ(sc, MII_BMSR) | 259 PHY_READ(sc, MII_BMSR); 260 if (bmsr & BMSR_LINK) 261 mii->mii_media_status |= IFM_ACTIVE; 262 263 bmcr = PHY_READ(sc, MII_BMCR); 264 if (bmcr & BMCR_ISO) { 265 mii->mii_media_active |= IFM_NONE; 266 mii->mii_media_status = 0; 267 return; 268 } 269 270 if (bmcr & BMCR_LOOP) 271 mii->mii_media_active |= IFM_LOOP; 272 273 if (bmcr & BMCR_AUTOEN) { 274 if ((bmsr & BMSR_ACOMP) == 0) { 275 /* Erg, still trying, I guess... */ 276 mii->mii_media_active |= IFM_NONE; 277 return; 278 } 279 diag = PHY_READ(sc, MII_ACPHY_DIAG); 280 if (diag & AC_DIAG_SPEED) 281 mii->mii_media_active |= IFM_100_TX; 282 else 283 mii->mii_media_active |= IFM_10_T; 284 285 if (diag & AC_DIAG_DUPLEX) 286 mii->mii_media_active |= IFM_FDX; 287 } else 288 mii->mii_media_active = ife->ifm_media; 289} 290 291static void 292acphy_reset(struct mii_softc *sc) 293{ 294 295 mii_phy_reset(sc); 296 PHY_WRITE(sc, MII_ACPHY_INT, 0); 297} 298