nsgphy.c revision 119418
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: head/sys/dev/mii/nsgphy.c 119418 2003-08-24 17:55:58Z obrien $"); 42 43/* 44 * Driver for the National Semiconductor DP83891 and DP83861 45 * 10/100/1000 PHYs. 46 * Datasheet available at: http://www.national.com/ds/DP/DP83861.pdf 47 * 48 * The DP83891 is the older NatSemi gigE PHY which isn't being sold 49 * anymore. The DP83861 is its replacement, which is an 'enhanced' 50 * firmware driven component. The major difference between the 51 * two is that the 83891 can't generate interrupts, while the 52 * 83861 can. (I think it wasn't originally designed to do this, but 53 * it can now thanks to firmware updates.) The 83861 also allows 54 * access to its internal RAM via indirect register access. 55 */ 56 57#include <sys/cdefs.h> 58__FBSDID("$FreeBSD: head/sys/dev/mii/nsgphy.c 119418 2003-08-24 17:55:58Z obrien $"); 59 60#include <sys/param.h> 61#include <sys/systm.h> 62#include <sys/kernel.h> 63#include <sys/socket.h> 64#include <sys/bus.h> 65 66#include <machine/clock.h> 67 68#include <net/if.h> 69#include <net/if_media.h> 70 71#include <dev/mii/mii.h> 72#include <dev/mii/miivar.h> 73#include "miidevs.h" 74 75#include <dev/mii/nsgphyreg.h> 76 77#include "miibus_if.h" 78 79static int nsgphy_probe(device_t); 80static int nsgphy_attach(device_t); 81 82static device_method_t nsgphy_methods[] = { 83 /* device interface */ 84 DEVMETHOD(device_probe, nsgphy_probe), 85 DEVMETHOD(device_attach, nsgphy_attach), 86 DEVMETHOD(device_detach, mii_phy_detach), 87 DEVMETHOD(device_shutdown, bus_generic_shutdown), 88 { 0, 0 } 89}; 90 91static devclass_t nsgphy_devclass; 92 93static driver_t nsgphy_driver = { 94 "nsgphy", 95 nsgphy_methods, 96 sizeof(struct mii_softc) 97}; 98 99 100DRIVER_MODULE(nsgphy, miibus, nsgphy_driver, nsgphy_devclass, 0, 0); 101 102static int nsgphy_service(struct mii_softc *, struct mii_data *,int); 103static void nsgphy_status(struct mii_softc *); 104 105const struct mii_phydesc gphyters[] = { 106 { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83861, 107 MII_STR_NATSEMI_DP83861 }, 108 109 { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83891, 110 MII_STR_NATSEMI_DP83891 }, 111 112 { 0, 0, 113 NULL }, 114}; 115 116static int 117nsgphy_probe(device_t dev) 118{ 119 struct mii_attach_args *ma; 120 const struct mii_phydesc *mpd; 121 122 ma = device_get_ivars(dev); 123 mpd = mii_phy_match(ma, gphyters); 124 if (mpd != NULL) { 125 device_set_desc(dev, mpd->mpd_name); 126 return(0); 127 } 128 129 return(ENXIO); 130} 131 132static int 133nsgphy_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 if (bootverbose) 142 device_printf(dev, "<rev. %d>\n", MII_REV(ma->mii_id2)); 143 device_printf(dev, " "); 144 sc->mii_dev = device_get_parent(dev); 145 mii = device_get_softc(sc->mii_dev); 146 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 147 148 sc->mii_inst = mii->mii_instance; 149 sc->mii_phy = ma->mii_phyno; 150 sc->mii_service = nsgphy_service; 151 sc->mii_pdata = mii; 152 sc->mii_anegticks = 5; 153 154 mii->mii_instance++; 155 156 sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) | 157 (BMSR_10TFDX|BMSR_10THDX)) & ma->mii_capmask; 158 if (sc->mii_capabilities & BMSR_EXTSTAT) 159 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 160 161 mii_phy_add_media(sc); 162 printf("\n"); 163 164 MIIBUS_MEDIAINIT(sc->mii_dev); 165 return(0); 166} 167 168static int 169nsgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 170{ 171 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 172 int reg; 173 174 switch (cmd) { 175 case MII_POLLSTAT: 176 /* 177 * If we're not polling our PHY instance, just return. 178 */ 179 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 180 return (0); 181 break; 182 183 case MII_MEDIACHG: 184 /* 185 * If the media indicates a different PHY instance, 186 * isolate ourselves. 187 */ 188 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 189 reg = PHY_READ(sc, MII_BMCR); 190 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 191 return (0); 192 } 193 194 /* 195 * If the interface is not up, don't do anything. 196 */ 197 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 198 break; 199 200 mii_phy_setmedia(sc); 201 break; 202 203 case MII_TICK: 204 /* 205 * If we're not currently selected, just return. 206 */ 207 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 208 return (0); 209 210 if (mii_phy_tick(sc) == EJUSTRETURN) 211 return (0); 212 break; 213 } 214 215 /* Update the media status. */ 216 nsgphy_status(sc); 217 218 /* Callback if something changed. */ 219 mii_phy_update(sc, cmd); 220 return (0); 221} 222 223static void 224nsgphy_status(struct mii_softc *sc) 225{ 226 struct mii_data *mii = sc->mii_pdata; 227 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 228 int bmsr, bmcr, physup, gtsr; 229 230 mii->mii_media_status = IFM_AVALID; 231 mii->mii_media_active = IFM_ETHER; 232 233 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 234 235 physup = PHY_READ(sc, NSGPHY_MII_PHYSUP); 236 237 if (physup & PHY_SUP_LINK) 238 mii->mii_media_status |= IFM_ACTIVE; 239 240 bmcr = PHY_READ(sc, MII_BMCR); 241 if (bmcr & BMCR_ISO) { 242 mii->mii_media_active |= IFM_NONE; 243 mii->mii_media_status = 0; 244 return; 245 } 246 247 if (bmcr & BMCR_LOOP) 248 mii->mii_media_active |= IFM_LOOP; 249 250 if (bmcr & BMCR_AUTOEN) { 251 /* 252 * The media status bits are only valid if autonegotiation 253 * has completed (or it's disabled). 254 */ 255 if ((bmsr & BMSR_ACOMP) == 0) { 256 /* Erg, still trying, I guess... */ 257 mii->mii_media_active |= IFM_NONE; 258 return; 259 } 260 261 switch (physup & (PHY_SUP_SPEED1|PHY_SUP_SPEED0)) { 262 case PHY_SUP_SPEED1: 263 mii->mii_media_active |= IFM_1000_T; 264 gtsr = PHY_READ(sc, MII_100T2SR); 265 if (gtsr & GTSR_MS_RES) 266 mii->mii_media_active |= IFM_ETH_MASTER; 267 break; 268 269 case PHY_SUP_SPEED0: 270 mii->mii_media_active |= IFM_100_TX; 271 break; 272 273 case 0: 274 mii->mii_media_active |= IFM_10_T; 275 break; 276 277 default: 278 mii->mii_media_active |= IFM_NONE; 279 mii->mii_media_status = 0; 280 } 281 if (physup & PHY_SUP_DUPLEX) 282 mii->mii_media_active |= IFM_FDX; 283 } else 284 mii->mii_media_active = ife->ifm_media; 285} 286