nsgphy.c revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2001 Wind River Systems 5 * Copyright (c) 2001 6 * Bill Paul <wpaul@bsdi.com>. All rights reserved. 7 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to The NetBSD Foundation 11 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 12 * NASA Ames Research Center. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by Bill Paul. 25 * 4. Neither the name of the author nor the names of any co-contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 33 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 34 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 35 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 36 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 37 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 39 * THE POSSIBILITY OF SUCH DAMAGE. 40 */ 41 42#include <sys/cdefs.h> 43__FBSDID("$FreeBSD: stable/11/sys/dev/mii/nsgphy.c 330897 2018-03-14 03:19:51Z eadler $"); 44 45/* 46 * Driver for the National Semiconductor DP83861, DP83865 and DP83891 47 * 10/100/1000 PHYs. 48 * Datasheet available at: http://www.national.com/ds/DP/DP83861.pdf 49 * and at: http://www.national.com/ds/DP/DP83865.pdf 50 * 51 * The DP83891 is the older NS GigE PHY which isn't being sold 52 * anymore. The DP83861 is its replacement, which is an 'enhanced' 53 * firmware driven component. The major difference between the 54 * two is that the DP83891 can't generate interrupts, while the 55 * 83861 can (probably it wasn't originally designed to do this, but 56 * it can now thanks to firmware updates). The DP83861 also allows 57 * access to its internal RAM via indirect register access. The 58 * DP83865 is an ultra low power version of the DP83861 and DP83891. 59 */ 60 61#include <sys/param.h> 62#include <sys/systm.h> 63#include <sys/kernel.h> 64#include <sys/module.h> 65#include <sys/socket.h> 66#include <sys/bus.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 DEVMETHOD_END 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 99DRIVER_MODULE(nsgphy, miibus, nsgphy_driver, nsgphy_devclass, 0, 0); 100 101static int nsgphy_service(struct mii_softc *, struct mii_data *,int); 102static void nsgphy_status(struct mii_softc *); 103 104static const struct mii_phydesc nsgphys[] = { 105 MII_PHY_DESC(xxNATSEMI, DP83861), 106 MII_PHY_DESC(xxNATSEMI, DP83865), 107 MII_PHY_DESC(xxNATSEMI, DP83891), 108 MII_PHY_END 109}; 110 111static const struct mii_phy_funcs nsgphy_funcs = { 112 nsgphy_service, 113 nsgphy_status, 114 mii_phy_reset 115}; 116 117static int 118nsgphy_probe(device_t dev) 119{ 120 121 return (mii_phy_dev_probe(dev, nsgphys, BUS_PROBE_DEFAULT)); 122} 123 124static int 125nsgphy_attach(device_t dev) 126{ 127 struct mii_softc *sc; 128 129 sc = device_get_softc(dev); 130 131 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &nsgphy_funcs, 0); 132 133 PHY_RESET(sc); 134 135 /* 136 * NB: the PHY has the 10BASE-T BMSR bits hard-wired to 0, 137 * even though it supports 10BASE-T. 138 */ 139 sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) | 140 BMSR_10TFDX | BMSR_10THDX) & sc->mii_capmask; 141 /* 142 * Note that as documented manual 1000BASE-T modes of DP83865 only 143 * work together with other National Semiconductor PHYs. 144 */ 145 if (sc->mii_capabilities & BMSR_EXTSTAT) 146 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 147 148 mii_phy_add_media(sc); 149 printf("\n"); 150 151 MIIBUS_MEDIAINIT(sc->mii_dev); 152 return (0); 153} 154 155static int 156nsgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 157{ 158 159 switch (cmd) { 160 case MII_POLLSTAT: 161 break; 162 163 case MII_MEDIACHG: 164 mii_phy_setmedia(sc); 165 break; 166 167 case MII_TICK: 168 if (mii_phy_tick(sc) == EJUSTRETURN) 169 return (0); 170 break; 171 } 172 173 /* Update the media status. */ 174 PHY_STATUS(sc); 175 176 /* Callback if something changed. */ 177 mii_phy_update(sc, cmd); 178 return (0); 179} 180 181static void 182nsgphy_status(struct mii_softc *sc) 183{ 184 struct mii_data *mii = sc->mii_pdata; 185 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 186 int bmsr, bmcr, physup, gtsr; 187 188 mii->mii_media_status = IFM_AVALID; 189 mii->mii_media_active = IFM_ETHER; 190 191 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 192 193 physup = PHY_READ(sc, NSGPHY_MII_PHYSUP); 194 195 if (physup & PHY_SUP_LINK) 196 mii->mii_media_status |= IFM_ACTIVE; 197 198 bmcr = PHY_READ(sc, MII_BMCR); 199 if (bmcr & BMCR_ISO) { 200 mii->mii_media_active |= IFM_NONE; 201 mii->mii_media_status = 0; 202 return; 203 } 204 205 if (bmcr & BMCR_LOOP) 206 mii->mii_media_active |= IFM_LOOP; 207 208 if (bmcr & BMCR_AUTOEN) { 209 /* 210 * The media status bits are only valid if autonegotiation 211 * has completed (or it's disabled). 212 */ 213 if ((bmsr & BMSR_ACOMP) == 0) { 214 /* Erg, still trying, I guess... */ 215 mii->mii_media_active |= IFM_NONE; 216 return; 217 } 218 219 switch (physup & (PHY_SUP_SPEED1 | PHY_SUP_SPEED0)) { 220 case PHY_SUP_SPEED1: 221 mii->mii_media_active |= IFM_1000_T; 222 gtsr = PHY_READ(sc, MII_100T2SR); 223 if (gtsr & GTSR_MS_RES) 224 mii->mii_media_active |= IFM_ETH_MASTER; 225 break; 226 227 case PHY_SUP_SPEED0: 228 mii->mii_media_active |= IFM_100_TX; 229 break; 230 231 case 0: 232 mii->mii_media_active |= IFM_10_T; 233 break; 234 235 default: 236 mii->mii_media_active |= IFM_NONE; 237 mii->mii_media_status = 0; 238 return; 239 } 240 241 if (physup & PHY_SUP_DUPLEX) 242 mii->mii_media_active |= 243 IFM_FDX | mii_phy_flowstatus(sc); 244 else 245 mii->mii_media_active |= IFM_HDX; 246 } else 247 mii->mii_media_active = ife->ifm_media; 248} 249