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 /* 35 * driver for Intel 82553 and 82555 PHYs 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/module.h> 42 #include <sys/socket.h> 43 #include <sys/bus.h> 44 45 #include <net/if.h> 46 #include <net/if_var.h> 47 #include <net/if_media.h> 48 49 #include <dev/mii/mii.h> 50 #include <dev/mii/miivar.h> 51 #include "miidevs.h" 52 53 #include <dev/fxp/inphyreg.h> 54 55 #include "miibus_if.h" 56 57 static int inphy_probe(device_t dev); 58 static int inphy_attach(device_t dev); 59 60 static device_method_t inphy_methods[] = { 61 /* device interface */ 62 DEVMETHOD(device_probe, inphy_probe), 63 DEVMETHOD(device_attach, inphy_attach), 64 DEVMETHOD(device_detach, mii_phy_detach), 65 DEVMETHOD(device_shutdown, bus_generic_shutdown), 66 { 0, 0 } 67 }; 68 69 static driver_t inphy_driver = { 70 "inphy", 71 inphy_methods, 72 sizeof(struct mii_softc) 73 }; 74 75 DRIVER_MODULE(inphy, miibus, inphy_driver, 0, 0); 76 77 static int inphy_service(struct mii_softc *, struct mii_data *, int); 78 static void inphy_status(struct mii_softc *); 79 static void inphy_reset(struct mii_softc *); 80 81 static const struct mii_phydesc inphys[] = { 82 MII_PHY_DESC(xxINTEL, I82553), 83 MII_PHY_DESC(yyINTEL, I82553), 84 MII_PHY_DESC(yyINTEL, I82555), 85 MII_PHY_DESC(yyINTEL, I82562EM), 86 MII_PHY_DESC(yyINTEL, I82562ET), 87 MII_PHY_END 88 }; 89 90 static const struct mii_phy_funcs inphy_funcs = { 91 inphy_service, 92 inphy_status, 93 inphy_reset 94 }; 95 96 static int 97 inphy_probe(device_t dev) 98 { 99 100 return (mii_phy_dev_probe(dev, inphys, BUS_PROBE_DEFAULT)); 101 } 102 103 static int 104 inphy_attach(device_t dev) 105 { 106 107 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &inphy_funcs, 1); 108 return (0); 109 } 110 111 static int 112 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 113 { 114 115 switch (cmd) { 116 case MII_POLLSTAT: 117 break; 118 119 case MII_MEDIACHG: 120 /* 121 * If the interface is not up, don't do anything. 122 */ 123 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0) 124 break; 125 126 mii_phy_setmedia(sc); 127 break; 128 129 case MII_TICK: 130 if (mii_phy_tick(sc) == EJUSTRETURN) 131 return (0); 132 break; 133 } 134 135 /* Update the media status. */ 136 PHY_STATUS(sc); 137 138 /* Callback if something changed. */ 139 mii_phy_update(sc, cmd); 140 return (0); 141 } 142 143 static void 144 inphy_status(struct mii_softc *sc) 145 { 146 struct mii_data *mii = sc->mii_pdata; 147 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 148 int bmsr, bmcr, scr; 149 150 mii->mii_media_status = IFM_AVALID; 151 mii->mii_media_active = IFM_ETHER; 152 153 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 154 if (bmsr & BMSR_LINK) 155 mii->mii_media_status |= IFM_ACTIVE; 156 157 bmcr = PHY_READ(sc, MII_BMCR); 158 if (bmcr & BMCR_ISO) { 159 mii->mii_media_active |= IFM_NONE; 160 mii->mii_media_status = 0; 161 return; 162 } 163 164 if (bmcr & BMCR_LOOP) 165 mii->mii_media_active |= IFM_LOOP; 166 167 if (bmcr & BMCR_AUTOEN) { 168 if ((bmsr & BMSR_ACOMP) == 0) { 169 mii->mii_media_active |= IFM_NONE; 170 return; 171 } 172 173 scr = PHY_READ(sc, MII_INPHY_SCR); 174 if (scr & SCR_S100) 175 mii->mii_media_active |= IFM_100_TX; 176 else 177 mii->mii_media_active |= IFM_10_T; 178 if (scr & SCR_FDX) 179 mii->mii_media_active |= 180 IFM_FDX | mii_phy_flowstatus(sc); 181 else 182 mii->mii_media_active |= IFM_HDX; 183 } else 184 mii->mii_media_active = ife->ifm_media; 185 } 186 187 static void 188 inphy_reset(struct mii_softc *sc) 189 { 190 191 mii_phy_reset(sc); 192 193 /* Ensure Bay flow control is disabled. */ 194 PHY_WRITE(sc, MII_INPHY_SCR, 195 PHY_READ(sc, MII_INPHY_SCR) & ~SCR_FLOWCTL); 196 } 197