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(NATSEMI, DP83861), 104 MII_PHY_DESC(NATSEMI, DP83865), 105 MII_PHY_DESC(NATSEMI, DP83891), 106 MII_PHY_END 107 }; 108 109 static int 110 nsgphy_probe(device_t dev) 111 { 112 113 return (mii_phy_dev_probe(dev, nsgphys, BUS_PROBE_DEFAULT)); 114 } 115 116 static int 117 nsgphy_attach(device_t dev) 118 { 119 struct mii_softc *sc; 120 struct mii_attach_args *ma; 121 struct mii_data *mii; 122 123 sc = device_get_softc(dev); 124 ma = device_get_ivars(dev); 125 if (bootverbose) 126 device_printf(dev, "<rev. %d>\n", MII_REV(ma->mii_id2)); 127 device_printf(dev, " "); 128 sc->mii_dev = device_get_parent(dev); 129 mii = ma->mii_data; 130 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 131 132 sc->mii_flags = miibus_get_flags(dev); 133 sc->mii_inst = mii->mii_instance++; 134 sc->mii_phy = ma->mii_phyno; 135 sc->mii_service = nsgphy_service; 136 sc->mii_pdata = mii; 137 138 sc->mii_flags |= MIIF_NOMANPAUSE; 139 140 mii_phy_reset(sc); 141 142 /* 143 * NB: the PHY has the 10BASE-T BMSR bits hard-wired to 0, 144 * even though it supports 10BASE-T. 145 */ 146 sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) | 147 BMSR_10TFDX | BMSR_10THDX) & ma->mii_capmask; 148 /* 149 * Note that as documented manual 1000BASE-T modes of DP83865 only 150 * work together with other National Semiconductor PHYs. 151 */ 152 if (sc->mii_capabilities & BMSR_EXTSTAT) 153 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 154 155 mii_phy_add_media(sc); 156 printf("\n"); 157 158 MIIBUS_MEDIAINIT(sc->mii_dev); 159 return (0); 160 } 161 162 static int 163 nsgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 164 { 165 166 switch (cmd) { 167 case MII_POLLSTAT: 168 break; 169 170 case MII_MEDIACHG: 171 /* 172 * If the interface is not up, don't do anything. 173 */ 174 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 175 break; 176 177 mii_phy_setmedia(sc); 178 break; 179 180 case MII_TICK: 181 if (mii_phy_tick(sc) == EJUSTRETURN) 182 return (0); 183 break; 184 } 185 186 /* Update the media status. */ 187 nsgphy_status(sc); 188 189 /* Callback if something changed. */ 190 mii_phy_update(sc, cmd); 191 return (0); 192 } 193 194 static void 195 nsgphy_status(struct mii_softc *sc) 196 { 197 struct mii_data *mii = sc->mii_pdata; 198 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 199 int bmsr, bmcr, physup, gtsr; 200 201 mii->mii_media_status = IFM_AVALID; 202 mii->mii_media_active = IFM_ETHER; 203 204 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 205 206 physup = PHY_READ(sc, NSGPHY_MII_PHYSUP); 207 208 if (physup & PHY_SUP_LINK) 209 mii->mii_media_status |= IFM_ACTIVE; 210 211 bmcr = PHY_READ(sc, MII_BMCR); 212 if (bmcr & BMCR_ISO) { 213 mii->mii_media_active |= IFM_NONE; 214 mii->mii_media_status = 0; 215 return; 216 } 217 218 if (bmcr & BMCR_LOOP) 219 mii->mii_media_active |= IFM_LOOP; 220 221 if (bmcr & BMCR_AUTOEN) { 222 /* 223 * The media status bits are only valid if autonegotiation 224 * has completed (or it's disabled). 225 */ 226 if ((bmsr & BMSR_ACOMP) == 0) { 227 /* Erg, still trying, I guess... */ 228 mii->mii_media_active |= IFM_NONE; 229 return; 230 } 231 232 switch (physup & (PHY_SUP_SPEED1 | PHY_SUP_SPEED0)) { 233 case PHY_SUP_SPEED1: 234 mii->mii_media_active |= IFM_1000_T; 235 gtsr = PHY_READ(sc, MII_100T2SR); 236 if (gtsr & GTSR_MS_RES) 237 mii->mii_media_active |= IFM_ETH_MASTER; 238 break; 239 240 case PHY_SUP_SPEED0: 241 mii->mii_media_active |= IFM_100_TX; 242 break; 243 244 case 0: 245 mii->mii_media_active |= IFM_10_T; 246 break; 247 248 default: 249 mii->mii_media_active |= IFM_NONE; 250 mii->mii_media_status = 0; 251 return; 252 } 253 254 if (physup & PHY_SUP_DUPLEX) 255 mii->mii_media_active |= 256 IFM_FDX | mii_phy_flowstatus(sc); 257 else 258 mii->mii_media_active |= IFM_HDX; 259 } else 260 mii->mii_media_active = ife->ifm_media; 261 } 262