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