iophy.c revision 1.40
1 /* $NetBSD: iophy.c,v 1.40 2019/02/24 17:22:21 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 /* 58 * Intel 82553 PHY driver 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: iophy.c,v 1.40 2019/02/24 17:22:21 christos Exp $"); 63 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/device.h> 68 #include <sys/socket.h> 69 70 #include <net/if.h> 71 #include <net/if_media.h> 72 73 #include <dev/mii/mii.h> 74 #include <dev/mii/miivar.h> 75 #include <dev/mii/miidevs.h> 76 77 #include <dev/mii/iophyreg.h> 78 79 static int iophymatch(device_t, cfdata_t, void *); 80 static void iophyattach(device_t, device_t, void *); 81 82 CFATTACH_DECL_NEW(iophy, sizeof(struct mii_softc), 83 iophymatch, iophyattach, mii_phy_detach, mii_phy_activate); 84 85 static int iophy_service(struct mii_softc *, struct mii_data *, int); 86 static void iophy_status(struct mii_softc *); 87 88 static const struct mii_phy_funcs iophy_funcs = { 89 iophy_service, iophy_status, mii_phy_reset, 90 }; 91 92 static const struct mii_phydesc iophys[] = { 93 MII_PHY_DESC(xxINTEL, I82553), 94 MII_PHY_DESC(yyINTEL, I82553), 95 MII_PHY_END, 96 }; 97 98 static int 99 iophymatch(device_t parent, cfdata_t match, void *aux) 100 { 101 struct mii_attach_args *ma = aux; 102 103 if (mii_phy_match(ma, iophys) != NULL) 104 return (10); 105 106 return (0); 107 } 108 109 static void 110 iophyattach(device_t parent, device_t self, void *aux) 111 { 112 struct mii_softc *sc = device_private(self); 113 struct mii_attach_args *ma = aux; 114 struct mii_data *mii = ma->mii_data; 115 const struct mii_phydesc *mpd; 116 117 mpd = mii_phy_match(ma, iophys); 118 aprint_naive(": Media interface\n"); 119 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 120 121 sc->mii_dev = self; 122 sc->mii_inst = mii->mii_instance; 123 sc->mii_phy = ma->mii_phyno; 124 sc->mii_funcs = &iophy_funcs; 125 sc->mii_pdata = mii; 126 sc->mii_flags = ma->mii_flags; 127 sc->mii_anegticks = MII_ANEGTICKS; 128 129 PHY_RESET(sc); 130 131 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 132 sc->mii_capabilities &= ma->mii_capmask; 133 aprint_normal_dev(self, ""); 134 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 135 aprint_error("no media present"); 136 else 137 mii_phy_add_media(sc); 138 aprint_normal("\n"); 139 } 140 141 static int 142 iophy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 143 { 144 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 145 uint16_t reg; 146 147 switch (cmd) { 148 case MII_POLLSTAT: 149 /* 150 * If we're not polling our PHY instance, just return. 151 */ 152 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 153 return (0); 154 break; 155 156 case MII_MEDIACHG: 157 /* 158 * If the media indicates a different PHY instance, 159 * isolate ourselves. 160 */ 161 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 162 PHY_READ(sc, MII_BMCR, ®); 163 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 164 return (0); 165 } 166 167 /* 168 * If the interface is not up, don't do anything. 169 */ 170 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 171 break; 172 173 mii_phy_setmedia(sc); 174 break; 175 176 case MII_TICK: 177 /* 178 * If we're not currently selected, just return. 179 */ 180 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 181 return (0); 182 183 if (mii_phy_tick(sc) == EJUSTRETURN) 184 return (0); 185 break; 186 187 case MII_DOWN: 188 mii_phy_down(sc); 189 return (0); 190 } 191 192 /* Update the media status. */ 193 mii_phy_status(sc); 194 195 /* Callback if something changed. */ 196 mii_phy_update(sc, cmd); 197 return (0); 198 } 199 200 static void 201 iophy_status(struct mii_softc *sc) 202 { 203 struct mii_data *mii = sc->mii_pdata; 204 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 205 uint16_t bmsr, bmcr, ext0; 206 207 mii->mii_media_status = IFM_AVALID; 208 mii->mii_media_active = IFM_ETHER; 209 210 PHY_READ(sc, MII_BMSR, &bmsr); 211 if (bmsr & BMSR_LINK) 212 mii->mii_media_status |= IFM_ACTIVE; 213 214 PHY_READ(sc, MII_BMCR, &bmcr); 215 if (bmcr & BMCR_ISO) { 216 mii->mii_media_active |= IFM_NONE; 217 mii->mii_media_status = 0; 218 return; 219 } 220 221 if (bmcr & BMCR_LOOP) 222 mii->mii_media_active |= IFM_LOOP; 223 224 if (bmcr & BMCR_AUTOEN) { 225 if ((bmsr & BMSR_ACOMP) == 0) { 226 /* Erg, still trying, I guess... */ 227 mii->mii_media_active |= IFM_NONE; 228 return; 229 } 230 PHY_READ(sc, MII_IOPHY_EXT0, &ext0); 231 232 if (ext0 & EXT0_SPEED) { 233 if ((bmsr & BMSR_100TXFDX) || (bmsr & BMSR_100TXHDX)) { 234 mii->mii_media_active |= IFM_100_TX; 235 } else if (bmsr & BMSR_100T4) { 236 mii->mii_media_active |= IFM_100_T4; 237 } 238 } else 239 mii->mii_media_active |= IFM_10_T; 240 241 if (ext0 & EXT0_DUPLEX) 242 mii->mii_media_active |= IFM_FDX; 243 else 244 mii->mii_media_active |= IFM_HDX; 245 } else 246 mii->mii_media_active = ife->ifm_media; 247 } 248
Indexes created Fri Sep 26 08:10:20 GMT 2025