inphy.c revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2001 Jonathan Lemon 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the author nor the names of any co-contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: stable/11/sys/dev/fxp/inphy.c 330897 2018-03-14 03:19:51Z eadler $"); 35 36/* 37 * driver for Intel 82553 and 82555 PHYs 38 */ 39 40#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/kernel.h> 43#include <sys/module.h> 44#include <sys/socket.h> 45#include <sys/bus.h> 46 47#include <net/if.h> 48#include <net/if_var.h> 49#include <net/if_media.h> 50 51#include <dev/mii/mii.h> 52#include <dev/mii/miivar.h> 53#include "miidevs.h" 54 55#include <dev/fxp/inphyreg.h> 56 57#include "miibus_if.h" 58 59static int inphy_probe(device_t dev); 60static int inphy_attach(device_t dev); 61 62static device_method_t inphy_methods[] = { 63 /* device interface */ 64 DEVMETHOD(device_probe, inphy_probe), 65 DEVMETHOD(device_attach, inphy_attach), 66 DEVMETHOD(device_detach, mii_phy_detach), 67 DEVMETHOD(device_shutdown, bus_generic_shutdown), 68 { 0, 0 } 69}; 70 71static devclass_t inphy_devclass; 72 73static driver_t inphy_driver = { 74 "inphy", 75 inphy_methods, 76 sizeof(struct mii_softc) 77}; 78 79DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, 0, 0); 80 81static int inphy_service(struct mii_softc *, struct mii_data *, int); 82static void inphy_status(struct mii_softc *); 83static void inphy_reset(struct mii_softc *); 84 85static const struct mii_phydesc inphys[] = { 86 MII_PHY_DESC(xxINTEL, I82553), 87 MII_PHY_DESC(yyINTEL, I82553), 88 MII_PHY_DESC(yyINTEL, I82555), 89 MII_PHY_DESC(yyINTEL, I82562EM), 90 MII_PHY_DESC(yyINTEL, I82562ET), 91 MII_PHY_END 92}; 93 94static const struct mii_phy_funcs inphy_funcs = { 95 inphy_service, 96 inphy_status, 97 inphy_reset 98}; 99 100static int 101inphy_probe(device_t dev) 102{ 103 104 return (mii_phy_dev_probe(dev, inphys, BUS_PROBE_DEFAULT)); 105} 106 107static int 108inphy_attach(device_t dev) 109{ 110 111 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &inphy_funcs, 1); 112 return (0); 113} 114 115static int 116inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 117{ 118 119 switch (cmd) { 120 case MII_POLLSTAT: 121 break; 122 123 case MII_MEDIACHG: 124 /* 125 * If the interface is not up, don't do anything. 126 */ 127 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0) 128 break; 129 130 mii_phy_setmedia(sc); 131 break; 132 133 case MII_TICK: 134 if (mii_phy_tick(sc) == EJUSTRETURN) 135 return (0); 136 break; 137 } 138 139 /* Update the media status. */ 140 PHY_STATUS(sc); 141 142 /* Callback if something changed. */ 143 mii_phy_update(sc, cmd); 144 return (0); 145} 146 147static void 148inphy_status(struct mii_softc *sc) 149{ 150 struct mii_data *mii = sc->mii_pdata; 151 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 152 int bmsr, bmcr, scr; 153 154 mii->mii_media_status = IFM_AVALID; 155 mii->mii_media_active = IFM_ETHER; 156 157 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 158 if (bmsr & BMSR_LINK) 159 mii->mii_media_status |= IFM_ACTIVE; 160 161 bmcr = PHY_READ(sc, MII_BMCR); 162 if (bmcr & BMCR_ISO) { 163 mii->mii_media_active |= IFM_NONE; 164 mii->mii_media_status = 0; 165 return; 166 } 167 168 if (bmcr & BMCR_LOOP) 169 mii->mii_media_active |= IFM_LOOP; 170 171 if (bmcr & BMCR_AUTOEN) { 172 if ((bmsr & BMSR_ACOMP) == 0) { 173 mii->mii_media_active |= IFM_NONE; 174 return; 175 } 176 177 scr = PHY_READ(sc, MII_INPHY_SCR); 178 if (scr & SCR_S100) 179 mii->mii_media_active |= IFM_100_TX; 180 else 181 mii->mii_media_active |= IFM_10_T; 182 if (scr & SCR_FDX) 183 mii->mii_media_active |= 184 IFM_FDX | mii_phy_flowstatus(sc); 185 else 186 mii->mii_media_active |= IFM_HDX; 187 } else 188 mii->mii_media_active = ife->ifm_media; 189} 190 191static void 192inphy_reset(struct mii_softc *sc) 193{ 194 195 mii_phy_reset(sc); 196 197 /* Ensure Bay flow control is disabled. */ 198 PHY_WRITE(sc, MII_INPHY_SCR, 199 PHY_READ(sc, MII_INPHY_SCR) & ~SCR_FLOWCTL); 200} 201