1 /*- 2 * Copyright (c) 2001 Wind River Systems 3 * Copyright (c) 2001 4 * Bill Paul <wpaul@bsdi.com>. All rights reserved. 5 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by Bill Paul. 23 * 4. Neither the name of the author nor the names of any co-contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 37 * THE POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #include <sys/cdefs.h> 41 __FBSDID("$FreeBSD$"); 42 43 /* 44 * Driver for the National Semiconductor DP83891 and DP83861 45 * 10/100/1000 PHYs. 46 * Datasheet available at: http://www.national.com/ds/DP/DP83861.pdf 47 * 48 * The DP83891 is the older NatSemi gigE PHY which isn't being sold 49 * anymore. The DP83861 is its replacement, which is an 'enhanced' 50 * firmware driven component. The major difference between the 51 * two is that the 83891 can't generate interrupts, while the 52 * 83861 can. (I think it wasn't originally designed to do this, but 53 * it can now thanks to firmware updates.) The 83861 also allows 54 * access to its internal RAM via indirect register access. 55 */ 56 57 #include <sys/param.h> 58 #include <sys/systm.h> 59 #include <sys/kernel.h> 60 #include <sys/module.h> 61 #include <sys/socket.h> 62 #include <sys/bus.h> 63 64 65 #include <net/if.h> 66 #include <net/if_media.h> 67 68 #include <dev/mii/mii.h> 69 #include <dev/mii/miivar.h> 70 #include "miidevs.h" 71 72 #include <dev/mii/nsgphyreg.h> 73 74 #include "miibus_if.h" 75 76 static int nsgphy_probe(device_t); 77 static int nsgphy_attach(device_t); 78 79 static device_method_t nsgphy_methods[] = { 80 /* device interface */ 81 DEVMETHOD(device_probe, nsgphy_probe), 82 DEVMETHOD(device_attach, nsgphy_attach), 83 DEVMETHOD(device_detach, mii_phy_detach), 84 DEVMETHOD(device_shutdown, bus_generic_shutdown), 85 { 0, 0 } 86 }; 87 88 static devclass_t nsgphy_devclass; 89 90 static driver_t nsgphy_driver = { 91 "nsgphy", 92 nsgphy_methods, 93 sizeof(struct mii_softc) 94 }; 95 96 97 DRIVER_MODULE(nsgphy, miibus, nsgphy_driver, nsgphy_devclass, 0, 0); 98 99 static int nsgphy_service(struct mii_softc *, struct mii_data *,int); 100 static void nsgphy_status(struct mii_softc *); 101 102 const struct mii_phydesc gphyters[] = { 103 MII_PHY_DESC(NATSEMI, DP83861), 104 MII_PHY_DESC(NATSEMI, DP83891), 105 MII_PHY_END 106 }; 107 108 static int 109 nsgphy_probe(device_t dev) 110 { 111 struct mii_attach_args *ma; 112 const struct mii_phydesc *mpd; 113 114 ma = device_get_ivars(dev); 115 mpd = mii_phy_match(ma, gphyters); 116 if (mpd != NULL) { 117 device_set_desc(dev, mpd->mpd_name); 118 return(BUS_PROBE_DEFAULT); 119 } 120 121 return(ENXIO); 122 } 123 124 static int 125 nsgphy_attach(device_t dev) 126 { 127 struct mii_softc *sc; 128 struct mii_attach_args *ma; 129 struct mii_data *mii; 130 131 sc = device_get_softc(dev); 132 ma = device_get_ivars(dev); 133 if (bootverbose) 134 device_printf(dev, "<rev. %d>\n", MII_REV(ma->mii_id2)); 135 device_printf(dev, " "); 136 sc->mii_dev = device_get_parent(dev); 137 mii = device_get_softc(sc->mii_dev); 138 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 139 140 sc->mii_inst = mii->mii_instance; 141 sc->mii_phy = ma->mii_phyno; 142 sc->mii_service = nsgphy_service; 143 sc->mii_pdata = mii; 144 sc->mii_anegticks = 5; 145 146 mii->mii_instance++; 147 148 sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) | 149 (BMSR_10TFDX|BMSR_10THDX)) & ma->mii_capmask; 150 if (sc->mii_capabilities & BMSR_EXTSTAT) 151 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 152 153 mii_phy_add_media(sc); 154 printf("\n"); 155 156 MIIBUS_MEDIAINIT(sc->mii_dev); 157 return(0); 158 } 159 160 static int 161 nsgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 162 { 163 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 164 int reg; 165 166 switch (cmd) { 167 case MII_POLLSTAT: 168 /* 169 * If we're not polling our PHY instance, just return. 170 */ 171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 172 return (0); 173 break; 174 175 case MII_MEDIACHG: 176 /* 177 * If the media indicates a different PHY instance, 178 * isolate ourselves. 179 */ 180 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 181 reg = PHY_READ(sc, MII_BMCR); 182 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 183 return (0); 184 } 185 186 /* 187 * If the interface is not up, don't do anything. 188 */ 189 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 190 break; 191 192 mii_phy_setmedia(sc); 193 break; 194 195 case MII_TICK: 196 /* 197 * If we're not currently selected, just return. 198 */ 199 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 200 return (0); 201 202 if (mii_phy_tick(sc) == EJUSTRETURN) 203 return (0); 204 break; 205 } 206 207 /* Update the media status. */ 208 nsgphy_status(sc); 209 210 /* Callback if something changed. */ 211 mii_phy_update(sc, cmd); 212 return (0); 213 } 214 215 static void 216 nsgphy_status(struct mii_softc *sc) 217 { 218 struct mii_data *mii = sc->mii_pdata; 219 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 220 int bmsr, bmcr, physup, gtsr; 221 222 mii->mii_media_status = IFM_AVALID; 223 mii->mii_media_active = IFM_ETHER; 224 225 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 226 227 physup = PHY_READ(sc, NSGPHY_MII_PHYSUP); 228 229 if (physup & PHY_SUP_LINK) 230 mii->mii_media_status |= IFM_ACTIVE; 231 232 bmcr = PHY_READ(sc, MII_BMCR); 233 if (bmcr & BMCR_ISO) { 234 mii->mii_media_active |= IFM_NONE; 235 mii->mii_media_status = 0; 236 return; 237 } 238 239 if (bmcr & BMCR_LOOP) 240 mii->mii_media_active |= IFM_LOOP; 241 242 if (bmcr & BMCR_AUTOEN) { 243 /* 244 * The media status bits are only valid if autonegotiation 245 * has completed (or it's disabled). 246 */ 247 if ((bmsr & BMSR_ACOMP) == 0) { 248 /* Erg, still trying, I guess... */ 249 mii->mii_media_active |= IFM_NONE; 250 return; 251 } 252 253 switch (physup & (PHY_SUP_SPEED1|PHY_SUP_SPEED0)) { 254 case PHY_SUP_SPEED1: 255 mii->mii_media_active |= IFM_1000_T; 256 gtsr = PHY_READ(sc, MII_100T2SR); 257 if (gtsr & GTSR_MS_RES) 258 mii->mii_media_active |= IFM_ETH_MASTER; 259 break; 260 261 case PHY_SUP_SPEED0: 262 mii->mii_media_active |= IFM_100_TX; 263 break; 264 265 case 0: 266 mii->mii_media_active |= IFM_10_T; 267 break; 268 269 default: 270 mii->mii_media_active |= IFM_NONE; 271 mii->mii_media_status = 0; 272 } 273 if (physup & PHY_SUP_DUPLEX) 274 mii->mii_media_active |= IFM_FDX; 275 } else 276 mii->mii_media_active = ife->ifm_media; 277 } 278