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 #include <net/if.h> 65 #include <net/if_media.h> 66 67 #include <dev/mii/mii.h> 68 #include <dev/mii/miivar.h> 69 #include "miidevs.h" 70 71 #include <dev/mii/nsgphyreg.h> 72 73 #include "miibus_if.h" 74 75 static int nsgphy_probe(device_t); 76 static int nsgphy_attach(device_t); 77 78 static device_method_t nsgphy_methods[] = { 79 /* device interface */ 80 DEVMETHOD(device_probe, nsgphy_probe), 81 DEVMETHOD(device_attach, nsgphy_attach), 82 DEVMETHOD(device_detach, mii_phy_detach), 83 DEVMETHOD(device_shutdown, bus_generic_shutdown), 84 { 0, 0 } 85 }; 86 87 static devclass_t nsgphy_devclass; 88 89 static driver_t nsgphy_driver = { 90 "nsgphy", 91 nsgphy_methods, 92 sizeof(struct mii_softc) 93 }; 94 95 DRIVER_MODULE(nsgphy, miibus, nsgphy_driver, nsgphy_devclass, 0, 0); 96 97 static int nsgphy_service(struct mii_softc *, struct mii_data *,int); 98 static void nsgphy_status(struct mii_softc *); 99 100 static const struct mii_phydesc nsgphys[] = { 101 MII_PHY_DESC(NATSEMI, DP83861), 102 MII_PHY_DESC(NATSEMI, DP83891), 103 MII_PHY_END 104 }; 105 106 static int 107 nsgphy_probe(device_t dev) 108 { 109 110 return (mii_phy_dev_probe(dev, nsgphys, BUS_PROBE_DEFAULT)); 111 } 112 113 static int 114 nsgphy_attach(device_t dev) 115 { 116 struct mii_softc *sc; 117 struct mii_attach_args *ma; 118 struct mii_data *mii; 119 120 sc = device_get_softc(dev); 121 ma = device_get_ivars(dev); 122 if (bootverbose) 123 device_printf(dev, "<rev. %d>\n", MII_REV(ma->mii_id2)); 124 device_printf(dev, " "); 125 sc->mii_dev = device_get_parent(dev); 126 mii = device_get_softc(sc->mii_dev); 127 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 128 129 sc->mii_inst = mii->mii_instance; 130 sc->mii_phy = ma->mii_phyno; 131 sc->mii_service = nsgphy_service; 132 sc->mii_pdata = mii; 133 134 mii->mii_instance++; 135 136 sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) | 137 (BMSR_10TFDX|BMSR_10THDX)) & ma->mii_capmask; 138 if (sc->mii_capabilities & BMSR_EXTSTAT) 139 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 140 141 mii_phy_add_media(sc); 142 printf("\n"); 143 144 MIIBUS_MEDIAINIT(sc->mii_dev); 145 return (0); 146 } 147 148 static int 149 nsgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 150 { 151 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 152 int reg; 153 154 switch (cmd) { 155 case MII_POLLSTAT: 156 /* 157 * If we're not polling our PHY instance, just return. 158 */ 159 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 160 return (0); 161 break; 162 163 case MII_MEDIACHG: 164 /* 165 * If the media indicates a different PHY instance, 166 * isolate ourselves. 167 */ 168 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 169 reg = PHY_READ(sc, MII_BMCR); 170 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 171 return (0); 172 } 173 174 /* 175 * If the interface is not up, don't do anything. 176 */ 177 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 178 break; 179 180 mii_phy_setmedia(sc); 181 break; 182 183 case MII_TICK: 184 /* 185 * If we're not currently selected, just return. 186 */ 187 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 188 return (0); 189 190 if (mii_phy_tick(sc) == EJUSTRETURN) 191 return (0); 192 break; 193 } 194 195 /* Update the media status. */ 196 nsgphy_status(sc); 197 198 /* Callback if something changed. */ 199 mii_phy_update(sc, cmd); 200 return (0); 201 } 202 203 static void 204 nsgphy_status(struct mii_softc *sc) 205 { 206 struct mii_data *mii = sc->mii_pdata; 207 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 208 int bmsr, bmcr, physup, gtsr; 209 210 mii->mii_media_status = IFM_AVALID; 211 mii->mii_media_active = IFM_ETHER; 212 213 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 214 215 physup = PHY_READ(sc, NSGPHY_MII_PHYSUP); 216 217 if (physup & PHY_SUP_LINK) 218 mii->mii_media_status |= IFM_ACTIVE; 219 220 bmcr = PHY_READ(sc, MII_BMCR); 221 if (bmcr & BMCR_ISO) { 222 mii->mii_media_active |= IFM_NONE; 223 mii->mii_media_status = 0; 224 return; 225 } 226 227 if (bmcr & BMCR_LOOP) 228 mii->mii_media_active |= IFM_LOOP; 229 230 if (bmcr & BMCR_AUTOEN) { 231 /* 232 * The media status bits are only valid if autonegotiation 233 * has completed (or it's disabled). 234 */ 235 if ((bmsr & BMSR_ACOMP) == 0) { 236 /* Erg, still trying, I guess... */ 237 mii->mii_media_active |= IFM_NONE; 238 return; 239 } 240 241 switch (physup & (PHY_SUP_SPEED1|PHY_SUP_SPEED0)) { 242 case PHY_SUP_SPEED1: 243 mii->mii_media_active |= IFM_1000_T; 244 gtsr = PHY_READ(sc, MII_100T2SR); 245 if (gtsr & GTSR_MS_RES) 246 mii->mii_media_active |= IFM_ETH_MASTER; 247 break; 248 249 case PHY_SUP_SPEED0: 250 mii->mii_media_active |= IFM_100_TX; 251 break; 252 253 case 0: 254 mii->mii_media_active |= IFM_10_T; 255 break; 256 257 default: 258 mii->mii_media_active |= IFM_NONE; 259 mii->mii_media_status = 0; 260 } 261 if (physup & PHY_SUP_DUPLEX) 262 mii->mii_media_active |= IFM_FDX; 263 } else 264 mii->mii_media_active = ife->ifm_media; 265 } 266