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 DP83861, DP83865 and DP83891 45 * 10/100/1000 PHYs. 46 * Datasheet available at: http://www.national.com/ds/DP/DP83861.pdf 47 * and at: http://www.national.com/ds/DP/DP83865.pdf 48 * 49 * The DP83891 is the older NS GigE PHY which isn't being sold 50 * anymore. The DP83861 is its replacement, which is an 'enhanced' 51 * firmware driven component. The major difference between the 52 * two is that the DP83891 can't generate interrupts, while the 53 * 83861 can (probably it wasn't originally designed to do this, but 54 * it can now thanks to firmware updates). The DP83861 also allows 55 * access to its internal RAM via indirect register access. The 56 * DP83865 is an ultra low power version of the DP83861 and DP83891. 57 */ 58 59 #include <sys/param.h> 60 #include <sys/systm.h> 61 #include <sys/kernel.h> 62 #include <sys/module.h> 63 #include <sys/socket.h> 64 #include <sys/bus.h> 65 66 #include <net/if.h> 67 #include <net/if_media.h> 68 69 #include <dev/mii/mii.h> 70 #include <dev/mii/miivar.h> 71 #include "miidevs.h" 72 73 #include <dev/mii/nsgphyreg.h> 74 75 #include "miibus_if.h" 76 77 static int nsgphy_probe(device_t); 78 static int nsgphy_attach(device_t); 79 80 static device_method_t nsgphy_methods[] = { 81 /* device interface */ 82 DEVMETHOD(device_probe, nsgphy_probe), 83 DEVMETHOD(device_attach, nsgphy_attach), 84 DEVMETHOD(device_detach, mii_phy_detach), 85 DEVMETHOD(device_shutdown, bus_generic_shutdown), 86 { 0, 0 } 87 }; 88 89 static devclass_t nsgphy_devclass; 90 91 static driver_t nsgphy_driver = { 92 "nsgphy", 93 nsgphy_methods, 94 sizeof(struct mii_softc) 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 static const struct mii_phydesc nsgphys[] = { 103 MII_PHY_DESC(xxNATSEMI, DP83861), 104 MII_PHY_DESC(xxNATSEMI, DP83865), 105 MII_PHY_DESC(xxNATSEMI, DP83891), 106 MII_PHY_END 107 }; 108 109 static const struct mii_phy_funcs nsgphy_funcs = { 110 nsgphy_service, 111 nsgphy_status, 112 mii_phy_reset 113 }; 114 115 static int 116 nsgphy_probe(device_t dev) 117 { 118 119 return (mii_phy_dev_probe(dev, nsgphys, BUS_PROBE_DEFAULT)); 120 } 121 122 static int 123 nsgphy_attach(device_t dev) 124 { 125 struct mii_softc *sc; 126 127 sc = device_get_softc(dev); 128 129 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &nsgphy_funcs, 0); 130 131 PHY_RESET(sc); 132 133 /* 134 * NB: the PHY has the 10BASE-T BMSR bits hard-wired to 0, 135 * even though it supports 10BASE-T. 136 */ 137 sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) | 138 BMSR_10TFDX | BMSR_10THDX) & sc->mii_capmask; 139 /* 140 * Note that as documented manual 1000BASE-T modes of DP83865 only 141 * work together with other National Semiconductor PHYs. 142 */ 143 if (sc->mii_capabilities & BMSR_EXTSTAT) 144 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 145 146 mii_phy_add_media(sc); 147 printf("\n"); 148 149 MIIBUS_MEDIAINIT(sc->mii_dev); 150 return (0); 151 } 152 153 static int 154 nsgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 155 { 156 157 switch (cmd) { 158 case MII_POLLSTAT: 159 break; 160 161 case MII_MEDIACHG: 162 /* 163 * If the interface is not up, don't do anything. 164 */ 165 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 166 break; 167 168 mii_phy_setmedia(sc); 169 break; 170 171 case MII_TICK: 172 if (mii_phy_tick(sc) == EJUSTRETURN) 173 return (0); 174 break; 175 } 176 177 /* Update the media status. */ 178 PHY_STATUS(sc); 179 180 /* Callback if something changed. */ 181 mii_phy_update(sc, cmd); 182 return (0); 183 } 184 185 static void 186 nsgphy_status(struct mii_softc *sc) 187 { 188 struct mii_data *mii = sc->mii_pdata; 189 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 190 int bmsr, bmcr, physup, gtsr; 191 192 mii->mii_media_status = IFM_AVALID; 193 mii->mii_media_active = IFM_ETHER; 194 195 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 196 197 physup = PHY_READ(sc, NSGPHY_MII_PHYSUP); 198 199 if (physup & PHY_SUP_LINK) 200 mii->mii_media_status |= IFM_ACTIVE; 201 202 bmcr = PHY_READ(sc, MII_BMCR); 203 if (bmcr & BMCR_ISO) { 204 mii->mii_media_active |= IFM_NONE; 205 mii->mii_media_status = 0; 206 return; 207 } 208 209 if (bmcr & BMCR_LOOP) 210 mii->mii_media_active |= IFM_LOOP; 211 212 if (bmcr & BMCR_AUTOEN) { 213 /* 214 * The media status bits are only valid if autonegotiation 215 * has completed (or it's disabled). 216 */ 217 if ((bmsr & BMSR_ACOMP) == 0) { 218 /* Erg, still trying, I guess... */ 219 mii->mii_media_active |= IFM_NONE; 220 return; 221 } 222 223 switch (physup & (PHY_SUP_SPEED1 | PHY_SUP_SPEED0)) { 224 case PHY_SUP_SPEED1: 225 mii->mii_media_active |= IFM_1000_T; 226 gtsr = PHY_READ(sc, MII_100T2SR); 227 if (gtsr & GTSR_MS_RES) 228 mii->mii_media_active |= IFM_ETH_MASTER; 229 break; 230 231 case PHY_SUP_SPEED0: 232 mii->mii_media_active |= IFM_100_TX; 233 break; 234 235 case 0: 236 mii->mii_media_active |= IFM_10_T; 237 break; 238 239 default: 240 mii->mii_media_active |= IFM_NONE; 241 mii->mii_media_status = 0; 242 return; 243 } 244 245 if (physup & PHY_SUP_DUPLEX) 246 mii->mii_media_active |= 247 IFM_FDX | mii_phy_flowstatus(sc); 248 else 249 mii->mii_media_active |= IFM_HDX; 250 } else 251 mii->mii_media_active = ife->ifm_media; 252 } 253