1 /* $NetBSD: iophy.c,v 1.43 2020/03/15 23:04:50 thorpej 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 1.43 2020/03/15 23:04:50 thorpej 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; 127 128 mii_lock(mii); 129 130 PHY_RESET(sc); 131 132 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 133 sc->mii_capabilities &= ma->mii_capmask; 134 135 mii_unlock(mii); 136 137 mii_phy_add_media(sc); 138 } 139 140 static int 141 iophy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 142 { 143 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 144 uint16_t reg; 145 146 KASSERT(mii_locked(mii)); 147 148 switch (cmd) { 149 case MII_POLLSTAT: 150 /* If we're not polling our PHY instance, just return. */ 151 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 152 return 0; 153 break; 154 155 case MII_MEDIACHG: 156 /* 157 * If the media indicates a different PHY instance, 158 * isolate ourselves. 159 */ 160 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 161 PHY_READ(sc, MII_BMCR, ®); 162 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 163 return 0; 164 } 165 166 /* If the interface is not up, don't do anything. */ 167 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 168 break; 169 170 mii_phy_setmedia(sc); 171 break; 172 173 case MII_TICK: 174 /* If we're not currently selected, just return. */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 176 return 0; 177 178 if (mii_phy_tick(sc) == EJUSTRETURN) 179 return 0; 180 break; 181 182 case MII_DOWN: 183 mii_phy_down(sc); 184 return 0; 185 } 186 187 /* Update the media status. */ 188 mii_phy_status(sc); 189 190 /* Callback if something changed. */ 191 mii_phy_update(sc, cmd); 192 return 0; 193 } 194 195 static void 196 iophy_status(struct mii_softc *sc) 197 { 198 struct mii_data *mii = sc->mii_pdata; 199 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 200 uint16_t bmsr, bmcr, ext0; 201 202 KASSERT(mii_locked(mii)); 203 204 mii->mii_media_status = IFM_AVALID; 205 mii->mii_media_active = IFM_ETHER; 206 207 PHY_READ(sc, MII_BMSR, &bmsr); 208 if (bmsr & BMSR_LINK) 209 mii->mii_media_status |= IFM_ACTIVE; 210 211 PHY_READ(sc, MII_BMCR, &bmcr); 212 if (bmcr & BMCR_ISO) { 213 mii->mii_media_active |= IFM_NONE; 214 mii->mii_media_status = 0; 215 return; 216 } 217 218 if (bmcr & BMCR_LOOP) 219 mii->mii_media_active |= IFM_LOOP; 220 221 if (bmcr & BMCR_AUTOEN) { 222 if ((bmsr & BMSR_ACOMP) == 0) { 223 /* Erg, still trying, I guess... */ 224 mii->mii_media_active |= IFM_NONE; 225 return; 226 } 227 PHY_READ(sc, MII_IOPHY_EXT0, &ext0); 228 229 if (ext0 & EXT0_SPEED) { 230 if ((bmsr & BMSR_100TXFDX) || (bmsr & BMSR_100TXHDX)) 231 mii->mii_media_active |= IFM_100_TX; 232 else if (bmsr & BMSR_100T4) 233 mii->mii_media_active |= IFM_100_T4; 234 } else 235 mii->mii_media_active |= IFM_10_T; 236 237 if (ext0 & EXT0_DUPLEX) 238 mii->mii_media_active |= IFM_FDX; 239 else 240 mii->mii_media_active |= IFM_HDX; 241 } else 242 mii->mii_media_active = ife->ifm_media; 243 } 244
Indexes created Sat Sep 20 22:09:52 GMT 2025