1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2009 M. Warner Losh <imp@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice unmodified, this list of conditions, and the following 11 * 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 #include <sys/cdefs.h> 29 /* 30 * driver for internal phy in the AX88x9x chips. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/module.h> 37 #include <sys/socket.h> 38 #include <sys/bus.h> 39 40 #include <net/if.h> 41 #include <net/if_media.h> 42 43 #include <dev/mii/mii.h> 44 #include <dev/mii/miivar.h> 45 #include "miidevs.h" 46 47 #include "miibus_if.h" 48 49 static int axphy_probe(device_t dev); 50 static int axphy_attach(device_t dev); 51 52 static device_method_t axphy_methods[] = { 53 /* device interface */ 54 DEVMETHOD(device_probe, axphy_probe), 55 DEVMETHOD(device_attach, axphy_attach), 56 DEVMETHOD(device_detach, mii_phy_detach), 57 DEVMETHOD(device_shutdown, bus_generic_shutdown), 58 DEVMETHOD_END 59 }; 60 61 static driver_t axphy_driver = { 62 "axphy", 63 axphy_methods, 64 sizeof(struct mii_softc) 65 }; 66 67 DRIVER_MODULE(axphy, miibus, axphy_driver, 0, 0); 68 69 static int axphy_service(struct mii_softc *, struct mii_data *, int); 70 static void axphy_status(struct mii_softc *); 71 72 static const struct mii_phydesc axphys[] = { 73 MII_PHY_DESC(xxASIX, AX88X9X), 74 MII_PHY_END 75 }; 76 77 static const struct mii_phy_funcs axphy_funcs = { 78 axphy_service, 79 axphy_status, 80 mii_phy_reset 81 }; 82 83 static int 84 axphy_probe(device_t dev) 85 { 86 87 return (mii_phy_dev_probe(dev, axphys, BUS_PROBE_DEFAULT)); 88 } 89 90 static int 91 axphy_attach(device_t dev) 92 { 93 struct mii_softc *sc; 94 95 sc = device_get_softc(dev); 96 97 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 98 &axphy_funcs, 1); 99 mii_phy_setmedia(sc); 100 101 return (0); 102 } 103 104 static int 105 axphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 106 { 107 108 switch (cmd) { 109 case MII_POLLSTAT: 110 break; 111 112 case MII_MEDIACHG: 113 mii_phy_setmedia(sc); 114 break; 115 116 case MII_TICK: 117 if (mii_phy_tick(sc) == EJUSTRETURN) 118 return (0); 119 break; 120 } 121 122 /* Update the media status. */ 123 PHY_STATUS(sc); 124 125 /* Callback if something changed. */ 126 mii_phy_update(sc, cmd); 127 return (0); 128 } 129 130 static void 131 axphy_status(struct mii_softc *sc) 132 { 133 struct mii_data *mii = sc->mii_pdata; 134 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 135 int bmsr, bmcr; 136 137 mii->mii_media_status = IFM_AVALID; 138 mii->mii_media_active = IFM_ETHER; 139 140 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 141 if (bmsr & BMSR_LINK) 142 mii->mii_media_status |= IFM_ACTIVE; 143 144 bmcr = PHY_READ(sc, MII_BMCR); 145 if (bmcr & BMCR_ISO) { 146 mii->mii_media_active |= IFM_NONE; 147 mii->mii_media_status = 0; 148 return; 149 } 150 151 if (bmcr & BMCR_LOOP) 152 mii->mii_media_active |= IFM_LOOP; 153 154 if (bmcr & BMCR_AUTOEN) { 155 if ((bmsr & BMSR_ACOMP) == 0) { 156 mii->mii_media_active |= IFM_NONE; 157 return; 158 } 159 160 #if 0 161 scr = PHY_READ(sc, MII_AXPHY_SCR); 162 if (scr & SCR_S100) 163 mii->mii_media_active |= IFM_100_TX; 164 else 165 mii->mii_media_active |= IFM_10_T; 166 if (scr & SCR_FDX) 167 mii->mii_media_active |= 168 IFM_FDX | mii_phy_flowstatus(sc); 169 else 170 mii->mii_media_active |= IFM_HDX; 171 #endif 172 } else 173 mii->mii_media_active = ife->ifm_media; 174 } 175